CN220586109U - Double-speed hub motor capable of being locked and unlocked by hooping - Google Patents

Abstract

The utility model relates to a tightening and unlocking double-speed hub motor, which comprises a gear ring clutch and a gear clutch, wherein one clutch is a wedge type clutch, the wedge type clutch comprises a first inner ring, a first outer ring, a plurality of wedges, a retainer, an elastic component and a tightening ring, the tightening ring is arranged between the first inner ring and the first outer ring and is hooped in a second groove at the outer sides of the wedges, and the inner diameter of the tightening ring can be adjusted to a first inner diameter and a second inner diameter; when the rotor of the motor actively rotates, the end cover rotates at a low speed or at a high speed along the anticlockwise direction; when the motor rotates reversely, the end cover rotates clockwise, the tightening ring of the wedge clutch adjusts the radius to be smaller, one of the gear ring clutch and the gear clutch is in an unlocking state, the other is in a locking state, and the rotor of the motor rotates passively. The electric vehicle adopting the double-speed hub motor can realize reversing.

Description

Double-speed hub motor capable of being locked and unlocked by hooping

Technical Field

The utility model relates to the technical field of double-speed hub motors, in particular to a tightening and unlocking double-speed hub motor.

Background

The clutch is a common component in mechanical transmission, such as the clutch is used in a double-speed hub motor, the clutch is a common component in mechanical transmission, the clutch has a locking state and an unlocking state, when the clutch is in the locking state, the inner ring and the outer ring can mutually transmit, when the clutch is in the unlocking state, the inner ring and the outer ring respectively rotate, the inner ring is connected with the inner side transmission component, the outer ring is connected with the outer side transmission component, when the clutch is locked, the inner side transmission component and the outer side transmission component can mutually transmit, and when the clutch is explained, the inner side transmission component and the outer side transmission component cannot transmit. The double-speed hub motor can output two rotating speeds by adopting a clutch.

Referring to fig. 1, as shown in the illustration, a wedge clutch in the prior art comprises an inner ring 11, an outer ring 12, a plurality of wedges 13, a retainer 14 and an elastic member 15, wherein the outer ring 12 is coaxially sleeved on the outer side of the inner ring 11 and forms an annular space 16 therebetween, the plurality of wedges 13, the retainer 14 and the elastic member 15 are all arranged in the annular space 16, the plurality of wedges 13 are sequentially arranged along the circumferential direction of the annular space 16 and can unlock and lock the outer ring 12, the retainer 14 holds the plurality of wedges 13 on the outer side of the set position of the inner ring 11, and the elastic member 15 is elastically pressed in a first groove 131 on the outer side of the plurality of wedges 13. When the clutch is in a locking state, the outer ring 12 actively rotates clockwise or the inner ring 11 actively rotates anticlockwise, the elastic component 15 keeps the wedge 13 in a locking state, and the inner ring and the outer ring are mutually locked to realize the combination of the inner part and the outer part; when the clutch is in an unlocking state, the outer ring 12 actively rotates in a counterclockwise direction or the inner ring 11 actively rotates in a clockwise direction, the outer ring 12 pushes the wedge 13 to swing counterclockwise from a locking posture to an unlocking posture, and the inner ring and the outer ring are mutually locked to realize the separation of an inner part and an outer part of the clutch.

Referring to fig. 2, shown in the drawings, a prior art two-speed in-wheel motor, comprising:

a carrier assembly including a main shaft 21, a housing 22, a planetary carrier 23, and an end cap 24, wherein the housing 22 is rotatably installed at an outer side of the main shaft 21, the planetary carrier 23 is fixedly installed at the main shaft 21, the planetary carrier 23 is provided at an inner side of the housing 22, the end cap 24 is rotatably connected to the main shaft 21, and the end cap 24 is fixedly connected to one end of the housing 22;

a transmission unit provided inside the housing 22, the transmission unit including a motor 31, a sun gear 32, a planetary gear 33, an output ring gear 34, a ring gear clutch 35, an output gear 36, and a gear clutch 37, the motor 31 being fixedly mounted on the main shaft 21, the sun gear 32 being drivingly connected to a rotor of the motor 31, the planetary gear 33 being rotatably mounted on the carrier 23, the planetary gear 33 being drivingly engaged with the sun gear 32, the output ring gear 34 being connected to the end cover 24 via the ring gear clutch 35, the output ring gear 34 being rotatably connected to the main shaft 21 outside the planetary gear 33, the output gear 36 being rotatably connected to the end cover 24 via the gear clutch 37, the output gear 36 being in engagement with the planetary gear 33, each of the ring gear clutch 35 and the gear clutch 37 having a locked state and an unlocked state, the output ring gear 34 being in a state when the ring gear clutch 35 is in a locked state, the output ring gear 34 being in a state when the output ring gear 34 is in a state of being unlocked from the end cover 24, and the output gear 37 being in a state of being unlocked when the output clutch 35 is in a state of being unlocked from the end cover 24 when the output clutch 37 is in a state of being unlocked from the gear clutch 24;

When the rotor of the motor 31 actively rotates in the clockwise direction, the output ring gear 34 rotates in the counterclockwise direction, the ring gear clutch 35 is in a locked state, the output gear 36 rotates in the clockwise direction, the gear clutch 37 is in an unlocked state, and the end cover 24 rotates in the counterclockwise direction at a low speed;

when the rotor of the motor 31 actively rotates in the counterclockwise direction, the output ring gear 34 rotates in the clockwise direction, the ring gear clutch 35 is in an unlocked state, the output gear 36 rotates in the counterclockwise direction, the gear clutch 37 is in a locked state, and the end cover 24 rotates in the counterclockwise direction at a high speed;

when the end cap 24 is actively rotated in the clockwise direction, the ring gear clutch 35 and the gear clutch 37 are both in a locked state.

When the end cover 24 actively rotates in the clockwise direction, the output gear ring and the output gear rotate around the same rotation direction because the gear ring clutch and the gear clutch are both in a locked state, and the output gear ring and the output gear drive the planetary gears 33 to rotate in different directions, so that the planetary gears 33 cannot rotate and cannot reverse. Therefore, the electric vehicle adopting the double-speed hub motor in the prior art can be locked when backing, and cannot be backed.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is how to realize reversing of the electric vehicle adopting the double-speed hub motor.

In order to solve the technical problems, the utility model provides a dual-speed hub motor for tightening and unlocking, which comprises:

the support assembly comprises a main shaft, a shell, a planet gear carrier and an end cover, wherein the shell is rotatably arranged on the outer side of the main shaft, the planet gear carrier is fixedly arranged on the main shaft, the planet gear carrier is arranged on the inner side of the shell, the end cover is rotatably connected to the main shaft, and the end cover is fixedly connected to one end of the shell;

the transmission assembly is arranged on the inner side of the shell and comprises a motor, a sun gear, a planetary gear, an output gear ring, a gear ring clutch, an output gear and a gear clutch, wherein the motor is fixedly arranged on the main shaft, the sun gear is in transmission connection with a rotor of the motor, the planetary gear is rotatably arranged on the planetary gear carrier, the planetary gear is in meshed transmission with the sun gear, the output gear ring is meshed on the outer side of the planetary gear, the output gear is rotatably connected with the main shaft, and the output gear is meshed with the planetary gear;

When the rotor of the motor actively rotates in a clockwise direction, the output gear ring rotates in a counterclockwise direction, the gear ring clutch is in a locking state, the output gear rotates in the clockwise direction, the gear clutch is in an unlocking state, and the end cover rotates along with the output gear ring in a counterclockwise direction at a low speed;

when the rotor of the motor actively rotates in the anticlockwise direction, the output gear ring rotates in the clockwise direction, the gear ring clutch is in an unlocking state, the output gear rotates in the anticlockwise direction, the gear clutch is in a locking state, and the end cover rotates along with the output gear at a high speed in the anticlockwise direction;

one of the gear ring clutch and the gear clutch is a wedge clutch, and the other is a linkage clutch;

the wedge type clutch comprises a first connecting ring, a first linkage ring, a plurality of wedges, a retainer, an elastic component and a tightening ring, wherein the first connecting ring and the first linkage ring are coaxially sleeved to form an annular space therebetween, the wedges, the retainer and the elastic component are all arranged in the annular space, the wedges are sequentially arranged along the circumferential direction of the annular space and can unlock and lock the first connecting ring and the first linkage ring, the retainer and the first linkage ring are relatively fixed, the retainer separates different wedges and keeps the wedges in the annular space, the elastic component is elastically compressed in a first groove outside the wedges and is used for keeping the wedges in a locking posture, the tightening ring is arranged in the annular space and is hooped in a second groove outside the wedges, one end of the tightening ring and the first ring are relatively fixed, and the inner diameter of the tightening ring can be adjusted between a first inner diameter and a second inner diameter, and the inner diameter of the tightening ring is larger than the first inner diameter;

The linkage clutch comprises a second connecting ring and a second linkage ring, wherein the second connecting ring and the second linkage ring are coaxially sleeved and can be mutually unlocked and locked;

the first connecting ring, the first linkage ring, the second linkage ring and the second connecting ring are coaxially sleeved in sequence, the innermost connecting ring is connected with the output gear, and the outermost connecting ring is connected with the output gear ring;

the end cover is connected with the first linkage ring, the other end of the tightening ring is connected with the second linkage ring through a transmission part, and the transmission part and the first linkage ring can rotate relatively for a set angle and are mutually transmitted;

when the rotor of the motor actively rotates and the wedge block clutch is in a locking state, the linkage clutch is in an unlocking state, the first linkage ring rotates in the anticlockwise direction and synchronously pushes the second linkage ring to rotate in the same direction, the inner diameter of the tightening ring is kept at a first inner diameter, and the first connecting ring and the wedge block are mutually propped to enable the wedge block to be kept in a locking state;

when the rotor of the motor actively rotates and the wedge type clutch is in an unlocking state, the linkage clutch is in a locking state, the second linkage ring rotates in a counterclockwise direction for a set angle and then pushes the first linkage ring to rotate in the same direction, the movable end of the tightening ring moves along with the transmission part to adjust the inner diameter of the tightening ring to be a second inner diameter, and the first connection ring and the wedge slip to push the wedge to reversely swing from a locking state to an unlocking state;

When the end cover actively rotates clockwise, the first linkage ring rotates clockwise along with the end cover and drives the second linkage ring to reversely rotate for a set angle, the movable end of the tightening ring moves along with the transmission part to adjust the inner diameter of the tightening ring to be a second inner diameter, the tightening ring drives the wedge block to reversely swing from a locking state to an unlocking state, the wedge block clutch is in an unlocking state, and the linkage clutch is in a locking state.

In one embodiment of the present utility model, a starting end of the tightening ring in the counterclockwise direction is relatively fixed to the first linkage ring, and a finishing end of the tightening ring in the counterclockwise direction is connected to the transmission member.

In one embodiment of the present utility model, when the ring gear clutch is the sprag clutch, the gear clutch is the linked clutch, and the reverse direction is clockwise; when the gear ring clutch is the linkage clutch, the gear clutch is the wedge clutch, and the reverse direction is the anticlockwise direction.

In one embodiment of the utility model, the first linkage ring is provided with a transmission hole extending along the radial direction, one end of the transmission hole is communicated with the annular space, the other end of the transmission hole is opposite to the second linkage ring, the transmission part is a transmission rod penetrating through the transmission hole, and the transmission rod and the transmission hole can rotate relatively by a set angle.

In one embodiment of the present utility model, the second groove has a forward groove end facing the forward direction and a reverse groove end facing the reverse direction, the distance between the tightening ring and the forward groove end is L1 when the wedge clutch is in the locked state, and the distance between the tightening ring and the forward groove end is L2 when the wedge clutch is in the first unlocked state and the second unlocked state, and L2 is smaller than L1.

In one embodiment of the present utility model, the cinch ring is in contact with the forward slot end when the wedge clutch is in the second unlocked state.

In one embodiment of the utility model, the hooping ring is a steel wire extending in the circumferential direction of the annular space.

In one embodiment of the utility model, the elastic member is an extension spring extending in an axial direction of the annular space and connected end to end.

In one embodiment of the utility model, one of the elastic members is provided between two of the tightening rings, or one of the tightening rings is provided between two of the elastic members.

In one embodiment of the utility model, the cage is of unitary construction.

Compared with the prior art, the technical scheme of the utility model has the following advantages: according to the tightening and unlocking double-speed hub motor, through the arrangement of the gear ring clutch and the gear clutch, two rotational speeds are output, and through the arrangement of one clutch as the wedge clutch with the tightening ring, the wedge clutch with the tightening ring can be unlocked when the vehicle is reversed, so that the electric vehicle adopting the double-speed hub motor is reversed.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic illustration of a wedge clutch of the prior art;

FIG. 2 is a schematic diagram of a two-speed in-wheel motor of the prior art;

FIG. 3 is a schematic illustration of a two-speed in-wheel motor of the present disclosure;

FIG. 4 is a schematic diagram of the meshing of the planetary gear, the output ring gear, and the output gear when the motor of the present disclosure is rotated clockwise;

FIG. 5 is a schematic illustration of a ring gear clutch according to one embodiment of the present disclosure;

FIG. 6 is a schematic illustration of the connection of a ring gear clutch and a gear clutch of a two-speed in-wheel motor according to one embodiment of the present utility model;

FIG. 7 is a schematic illustration of a gear clutch according to a second embodiment of the present disclosure;

fig. 8 is a schematic connection diagram of a ring gear clutch and a gear clutch of a two-speed in-wheel motor according to a second embodiment of the present utility model.

Description of the specification reference numerals: 11. an inner ring; 12. an outer ring; 13. wedge blocks; 131. a first groove; 14. a retainer; 15. an elastic member; 16. an annular space;

21. A main shaft; 22. a housing; 23. a planetary carrier; 24. an end cap; 31. a motor; 32. a sun gear; 33. a planetary gear; 34. an output gear ring; 35. a ring gear clutch; 36. an output gear; 37. a gear clutch;

41. a main shaft; 42. a housing; 43. a planetary carrier; 44. an end cap; 51. a motor; 52. a sun gear; 53. a planetary gear; 54. an output gear ring; 55. a ring gear clutch; 56. an output gear; 57. a gear clutch;

61. a first link ring; 62. a first connection ring; 63. wedge blocks; 631. a second groove; 632. a groove end A; 633. a groove end B; 64. a retainer; 65. hooping the ring; 66. an annular space; 67. a transmission hole; 671. a hole end A; 672. a hole end B; 68. a transmission member; 69. a second connection ring; 610. a second link;

71. a first connection ring; 72. a first link ring; 73. wedge blocks; 731. a second groove; 732. a groove end C; 733. a groove end D; 74. a retainer; 75. hooping the ring; 76. an annular space; 77. a transmission hole; 771. a hole end C; 772. a hole end D; 78. a transmission member; 79. a second link; 710. and a second connecting ring.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Example 1

Referring to fig. 3-6, as shown in the legend therein, a two-speed, hugging and unlocking, in-wheel motor comprises:

a carrier assembly including a main shaft 41, a housing 42, a planetary carrier 43, and an end cap 44, wherein the housing 42 is rotatably installed at an outer side of the main shaft 41, the planetary carrier 43 is fixedly installed at the main shaft 41, the planetary carrier 43 is provided at an inner side of the housing 42, the end cap 44 is rotatably connected to the main shaft 41, and the end cap 44 is fixedly connected to one end of the housing 42;

a transmission unit provided inside the housing 42, the transmission unit including a motor 51, a sun gear 52, a planetary gear 53, an output ring gear 54, a ring gear clutch 55, an output gear 56, and a gear clutch 57, the motor 51 being fixedly mounted on the main shaft 41, the sun gear 52 being drivingly connected to a rotor of the motor 51, the planetary gear 53 being rotatably mounted on the planetary carrier 43, the planetary gear 53 being in meshing engagement with the sun gear 52, the output ring gear 54 being connected to an outer ring of the ring gear clutch 55, the output ring gear 54 being meshed outside the planetary gear 53, the output gear 56 being rotatably connected to the main shaft 41, the output gear 56 is connected to an inner ring of the gear clutch 57, the output gear 56 is engaged with the planetary gear 53, the ring gear clutch 55 and the gear clutch 57 each have a locked state and an unlocked state, when the ring gear clutch 55 is in the locked state, the output ring gear 54 and the end cover 44 are driven to each other, when the ring gear clutch 55 is in the unlocked state, the output ring gear 54 and the end cover 44 are not driven to each other, when the gear clutch 57 is in the locked state, the output gear 56 and the end cover 44 are driven to each other, and when the gear clutch 57 is in the unlocked state, the output gear 56 and the end cover 44 are not driven to each other;

Wherein, the gear ring clutch 55 is sleeved outside the gear clutch 57;

the ring gear clutch 55 is a wedge clutch, the wedge clutch includes a first coupling ring 61, a first coupling ring 62, a plurality of wedges 63, a retainer 64, an elastic member (not shown) and a band-tightening ring 65, the first coupling ring 62 is coaxially sleeved outside the first coupling ring 61 and forms an annular space 66 therebetween, the plurality of wedges 63, the retainer 64 and the elastic member are all disposed in the annular space 66, the plurality of wedges 63 are sequentially disposed in a circumferential direction of the annular space 66 and are capable of unlocking and locking the first coupling ring 61 and the first coupling ring 62, the retainer 64 is relatively fixed to the first coupling ring 61, the retainer 64 holds the plurality of wedges 63 outside a set position of the first coupling ring 61, the elastic member is elastically pressed in a first groove (not shown) outside the plurality of wedges 63 and is used for holding the wedges 63 in a locked state, the band-tightening ring 66 is disposed in the annular space 66 and is capable of being connected to a second inner diameter of the first coupling ring 631 in a circumferential direction of the annular space 66, and the second coupling ring-tightening ring is capable of being adjusted in a counterclockwise direction of the second inner diameter of the annular space 65;

When the wedge clutch is in a locked state, the first connecting ring 62 actively rotates in a counterclockwise direction or the first coupling ring actively rotates in a clockwise direction, the inner diameter of the tightening ring 65 is a first inner diameter, the first connecting ring 62 and the wedge 63 are abutted against each other so that the wedge 63 is maintained in a locked state, and the first coupling ring 61 and the first connecting ring 62 are mutually locked;

when the wedge clutch is in the first unlocked state, the first connecting ring 62 actively rotates in a clockwise direction or the first coupling ring 61 actively rotates in a counterclockwise direction, the first connecting ring 62 and the wedge 63 mutually slip to push the wedge 63 to swing from a locking posture to an unlocking posture in a clockwise direction, and the first coupling ring 61 and the first connecting ring 62 mutually unlock;

when the wedge clutch is in the second unlocked state, the first connecting ring 62 actively rotates in a counterclockwise direction or the first coupling ring 61 actively rotates in a clockwise direction, the tightening ring 65 is adjusted to a second inner diameter, the tightening ring 65 drives the plurality of wedges 63 to swing from a locking posture to an unlocking posture in a clockwise direction, and the first coupling ring 61 and the first coupling ring 62 are mutually unlocked.

The gear clutch 57 is a coupling clutch, and includes a second coupling ring 69 and a second coupling ring 610 that can be unlocked and locked to each other;

the first connecting ring 62 is connected to the output ring gear 54, and the second connecting ring 69 is connected to the output gear 56;

the end cover 44 is connected with the first linkage ring 61, the end point of the tightening ring 65 along the anticlockwise direction is connected with the second linkage ring 610 through a transmission part 68, and the transmission part 68 and the first linkage ring 61 can rotate for a set angle and mutually transmit;

when the rotor of the motor 51 actively rotates in the clockwise direction, the output ring gear 54 rotates in the counterclockwise direction, the first coupling ring 62 rotates in the counterclockwise direction, the ring gear clutch 55 is in a locked state, the output gear 56 rotates in the clockwise direction, the second coupling ring 69 rotates in the clockwise direction, the gear clutch 57 is in an unlocked state, the first coupling ring 61 rotates in the counterclockwise direction and synchronously pushes the second coupling ring 610 to rotate in the counterclockwise direction, the grip ring 65 is maintained at the first inner diameter, and the end cover 44 rotates at a low speed in the counterclockwise direction along with the output ring gear 54;

when the rotor of the motor 51 actively rotates in the counterclockwise direction, the output ring gear 54 rotates in the clockwise direction, the first connecting ring 62 pushes the wedge 63 to swing from the locked state to the unlocked state in the clockwise direction, the ring gear clutch 55 is in the unlocked state, the output gear 56 rotates in the counterclockwise direction, the second connecting ring 69 rotates in the counterclockwise direction, the gear clutch 57 is in the locked state, the second connecting ring 610 rotates in the counterclockwise direction by a set angle and pushes the first connecting ring 61 to rotate in the counterclockwise direction, the movable end of the tightening ring 65 moves along with the transmission member 68 to adjust the inner diameter of the tightening ring to the second inner diameter, and the end cover 44 rotates along with the output gear 56 in the counterclockwise direction at a high speed;

When the end cover 44 actively rotates clockwise, the first coupling ring 61 rotates clockwise along with the end cover 44 and drives the second coupling ring 610 to rotate counterclockwise by a set angle, the movable end of the tightening ring 65 moves along with the transmission member 68 to adjust the inner diameter of the tightening ring 65 to the second inner diameter, the tightening ring drives the wedge 63 to swing clockwise from the locking position to the unlocking position, the ring gear clutch is in the unlocking state, the gear clutch is in the locking position, and the rotor of the motor rotates clockwise.

The first connecting ring actively rotates to drive the first connecting ring of the clutch to rotate by the rotary power equipment, when the clutch is locked, the first connecting ring drives the first linkage ring to rotate, and when the clutch is unlocked, the first connecting ring rotates and the first linkage ring does not rotate; the first linkage ring actively rotates to enable the rotation power equipment to drive the first linkage ring of the clutch to rotate, when the clutch is locked, the first linkage ring drives the first connecting ring to rotate, and when the clutch is unlocked, the first linkage ring rotates, and the first connecting ring does not rotate.

The structure and the working principle of the first linkage ring, the first connecting ring, the wedge block, the retainer and the elastic component are all in the prior art, and are not described herein. In the technical scheme, the first groove and the second groove are through grooves, two groove ends of the through grooves are open, and the elastic component and the tightening ring are not easy to separate from the wedge block. The clamping ring is equivalent to an elastic C-shaped ring, the inner hole inner diameter of the clamping ring can be increased and decreased by adjusting the distance between the two free ends of the clamping ring, when the inner hole inner diameter of the clamping ring is increased (adjusted to the first inner diameter), namely, the inner hole inner diameter of the clamping ring is larger, the contact area of the clamping ring and the wedge block is smaller, the clamping ring does not apply external force to the wedge block, the wedge block is kept in a locking state under the action of the pressing force of the elastic component, or the wedge block is pushed by the first connecting ring to overcome the pressing force of the elastic component and is switched to an unlocking state, when the inner hole inner diameter of the clamping ring is adjusted to the second inner diameter, namely, the inner hole inner diameter of the clamping ring is smaller, the contact area of the clamping ring and the wedge block is larger, the external force of the clamping ring is received, the wedge block is switched to the unlocking state in order to adapt to the inner diameter of the clamping ring, and the adjustment of the posture of the wedge block is realized in a tightening mode.

When reversing, the end cover rotates clockwise, the gear ring clutch rotates clockwise along with the end cover in a locking state, the output gear ring rotates clockwise under the drive of the gear ring clutch, the planet wheel rotates clockwise under the drive of the output gear ring, the output gear rotates anticlockwise under the drive of the planet wheel, the gear clutch rotates anticlockwise along with the output gear in a locking state, after the gear clutch rotates for a set angle along with the output gear, the movable end of the tightening ring moves along with the transmission part to unlock the gear ring clutch, at the moment, only the gear clutch is in a locking state and rotates along with the end cover, and the rotor of the motor rotates clockwise. The gear ring clutch and the gear clutch are used for linkage unlocking, so that the structure design is ingenious and simple.

In this embodiment, the first coupling ring 61 is provided with a transmission hole 67 extending in a radial direction, one end of the transmission hole 67 is communicated with the annular space 66, the other end of the transmission hole 67 faces the second coupling ring 610, the transmission member 68 is a transmission rod passing through the transmission hole 67, one end of the transmission rod is connected with a terminal end of the tightening ring 65 in a counterclockwise direction, the other end of the transmission rod is connected and fixed with the second coupling ring 610, and the transmission rod and the transmission hole can rotate relatively by a set angle;

The transmission hole 67 has a hole end a671 facing clockwise and a hole end B672 facing counterclockwise, and the tightening ring 65 has a first inner diameter, the transmission rod is in contact with the hole end a671, and the tightening ring 65 has a second inner diameter when the transmission rod is in contact with the hole end B672.

The transmission hole 67 is an arc-shaped through hole penetrating in the radial direction of the first coupling ring 61 and extending in the circumferential direction of the first coupling ring 61, and the transmission rod moves in the arc length direction of the transmission hole. Through setting up drive hole and transfer line, can realize the synchronous linkage and the delay linkage of first movable ring and second movable ring to realize normal double-speed output and the unblock of backing a car. Preferably, the elastic component is arranged to enable the transmission rod to be abutted against the hole end A671 of the transmission hole under the action of elastic restoring force of the elastic component. The elastic member is, for example, a compression spring provided in the transmission hole and located between the transmission rod and the hole end B672 of the transmission hole.

In this embodiment, the second groove 631 has a counterclockwise groove end a632 and a clockwise groove end B633, and when the ring gear clutch is in the locked state, a distance between the band 65 and the groove end a632 is L1, when the ring gear clutch is in the first unlocked state, a groove bottom of the second groove 631 is separated from the band 65, and when the ring gear clutch is in the second unlocked state, a distance between the band 65 and the groove end a632 is L2, and L2 is smaller than L1. The bottom surface of the second groove is a plane, when the wedge clutch is in a locking state, the contact area between the bottom surface of the second groove and the tightening ring is smaller, the included angle between the bottom surface of the second groove and the tightening ring is larger, and when the wedge clutch is in a second unlocking state, the contact area between the bottom surface of the second groove and the tightening ring is larger, and the included angle between the bottom surface of the second groove and the tightening ring is smaller.

In the present embodiment, the band 65 may or may not be in contact with the groove end B633 when the ring gear clutch 55 is in the locked state, and the band 65 may be in contact with the groove end a632 when the ring gear clutch 55 is in the second unlocked state. Specifically, when the wedge clutch is in the locked state, the tightening ring is only in contact with the groove end B, and when the wedge clutch is in the second unlocked state, the tightening ring is in contact with the groove end a, the groove end B, and even the entire groove bottom surface of the second groove.

In this embodiment, the tightening ring 65 is a steel wire extending in the circumferential direction of the annular space 66. Specifically, the steel wire is a spring steel wire, and the spring steel wire can deform and reset, so that the deformation driving wedge block can swing to an unlocking posture, and the reset does not influence the wedge block to keep a locking posture.

In this embodiment, the elastic member is an extension spring extending in the circumferential direction of the annular space 66 and connected end to end. The tension spring has reliable elastic force and can be connected into a circular ring shape, so that the wedge block can be reliably kept in a locking posture.

In this embodiment, one of the elastic members is disposed between the two tightening rings 65, or one of the tightening rings 65 is disposed between the two elastic members. With this arrangement, the force experienced by the wedge is relatively uniform.

In this embodiment, the holder 64 is integrally formed. The retainer in this embodiment is an annular unitary body. In other embodiments, the retainer is not annular, for example, two ends of the retainer are respectively fixed with the first linkage ring.

Example two

Referring to fig. 7 and 8, the rest is the same as embodiment one, except as follows: the gear clutch 57 is the wedge clutch, the wedge clutch includes a first coupling ring 71, a first coupling ring 72, a plurality of wedges 73, a retainer 74, an elastic member (not shown) and a tightening ring 75, the first coupling ring 72 is coaxially sleeved outside the first coupling ring 71 and forms an annular space 76 therebetween, the plurality of wedges 73, the retainer 74 and the elastic member are all disposed in the annular space 76, the plurality of wedges 73 are sequentially disposed in a circumferential direction of the annular space 76 and can unlock and lock the first coupling ring 71 and the first coupling ring 72, the retainer 74 is relatively fixed to the first coupling ring 72, the retainer 74 holds the plurality of wedges 73 inside a set position of the first coupling ring 72, the elastic member is elastically pressed inside a first groove (not shown) outside the plurality of wedges 73 and holds the wedges 73 in a locked position, the wedges 73 are relatively fixed to the first tightening ring 731 along the circumferential direction of the annular space 76 and the first tightening ring 75 is relatively fixed to the second tightening ring 75 along the circumferential direction of the annular space;

When the wedge clutch is in a locked state, the first link ring 72 actively rotates clockwise or the first link ring 71 actively rotates counterclockwise, the tightening ring 75 is adjusted to a first inner diameter, the first link ring 71 pushes the wedge 73 to be maintained in a locked state, and the first link ring 71 and the first link ring 72 are locked with each other;

when the wedge clutch is in the first unlocked state, the first coupling ring 72 actively rotates in a counterclockwise direction or the first connecting ring 71 actively rotates in a clockwise direction, the first connecting ring 71 pushes the wedge 73 to swing from a locking posture in the counterclockwise direction to an unlocking posture, and the first connecting ring 71 and the first coupling ring 72 are mutually unlocked;

when the wedge clutch is in the second unlocking state, the first link ring 72 actively rotates clockwise or the first connecting ring 71 actively rotates counterclockwise, the tightening ring 75 is adjusted to the second inner diameter, the tightening ring 75 drives the wedges 73 to swing from the locking posture to the unlocking posture in the counterclockwise direction, and the first connecting ring 71 and the first link ring 72 are mutually unlocked;

The ring gear clutch 55 is a linkage clutch, and includes a second link ring 79 and a second connecting ring 710 that can be mutually unlocked and locked;

the first connecting ring 71 is connected to the output gear 56, and the second connecting ring 710 is connected to the output ring gear 54;

the end cover is connected with the first linkage ring 72, the end point end of the tightening ring 75 along the anticlockwise direction is connected with the second linkage ring 79 through a transmission part 78, and the first linkage ring 72 and the transmission part 78 can rotate relatively for a set angle and mutually transmit;

when the rotor of the motor 51 actively rotates in a clockwise direction, the output ring gear 54 rotates in a counterclockwise direction, the second link 710 rotates in a counterclockwise direction, the ring gear clutch 55 is in a locked state, the output gear 56 rotates in a clockwise direction, the first link 71 rotates in a clockwise direction, the wedge 73 swings counterclockwise from a locked state to an unlocked state, the gear clutch 57 is in an unlocked state, the second link 79 rotates in a counterclockwise direction by a set angle to push the first link 72 to rotate in a counterclockwise direction, the movable end of the tightening ring 75 moves with the transmission member 78 to adjust the inner diameter of the tightening ring 75 to a second inner diameter, and the end cap 44 rotates with the output ring gear 54 in a counterclockwise direction at a low speed;

When the rotor of the motor 51 actively rotates in a counterclockwise direction, the output ring gear 54 rotates in a clockwise direction, the second link 710 rotates in a clockwise direction, the ring gear clutch 55 is in an unlocked state, the output gear 56 rotates in a counterclockwise direction, the first link 71 pushes the wedge to be maintained in a locked state, the gear clutch 57 is in a locked state, the first link 72 rotates in a counterclockwise direction and simultaneously pushes the second link 79 to rotate in a counterclockwise direction, and the end cover 44 rotates at a high speed in a counterclockwise direction along with the output gear 56;

when the end cover 44 actively rotates clockwise, the first link ring 72 rotates clockwise along with the end cover 44 and drives the second link ring 79 to rotate counterclockwise by a set angle through the output gear ring, the planetary gear and the output gear, the movable end of the tightening ring 75 moves along with the transmission member 78 to adjust the inner diameter of the tightening ring 75 to the second inner diameter, the tightening ring 75 drives the wedge 73 to swing counterclockwise from the locking position to the unlocking position, the gear clutch 57 is in the unlocking position, the gear ring clutch 55 is in the locking position, and the rotor of the motor rotates counterclockwise.

When reversing, the end cover rotates clockwise, the gear clutch rotates clockwise along with the end cover in a locking state, the output gear rotates clockwise under the drive of the gear clutch, the planet wheel rotates anticlockwise under the drive of the output gear, the output gear ring rotates anticlockwise under the drive of the planet wheel, the gear ring clutch rotates anticlockwise along with the output gear ring in a locking state, after the gear ring clutch rotates a set angle along with the output gear ring, the movable end of the tightening ring moves along with the transmission part to unlock the gear clutch, at the moment, only the gear ring clutch is in a locking state and rotates along with the end cover, and the rotor of the motor rotates anticlockwise. The gear ring clutch and the gear clutch are used for linkage unlocking, so that the structure design is ingenious and simple.

In this embodiment, the second groove 731 has a groove end C732 directed clockwise and a groove end D733 directed counterclockwise, and when the wedge clutch is in the locked state, a distance between the tightening ring 75 and the groove end C732 is L3, and when the wedge clutch is in the first unlocked state, a groove bottom surface of the second groove 731 is separated from the tightening ring, and when the wedge clutch is in the second unlocked state, a distance between the tightening ring 75 and the groove end C732 is L4, and L3 is greater than L4.

The band 75 may or may not contact the groove end D733 when the wedge clutch is in the locked state, and the band 75 may contact the groove end C732 when the wedge clutch is in the second unlocked state.

In this embodiment, the first coupling ring 72 is provided with a transmission hole 77 extending in a radial direction, one end of the transmission hole 77 is communicated with the annular space 76, the other end of the transmission hole 77 faces the outer side surface of the second coupling ring 79, the transmission member 78 is a transmission rod passing through the transmission hole 77, one end of the transmission rod is connected with a final end of the tightening ring 75 in a counterclockwise direction, and the other end of the transmission rod is fixedly connected with the outer side surface of the second coupling ring 79;

the transmission hole 77 has a hole end C771 facing clockwise and a hole end D772 facing counterclockwise, and the tightening ring 75 has a first inner diameter, the transmission rod is in contact with the hole end C771, and the tightening ring 75 has a second inner diameter when the transmission rod is in contact with the hole end D772. Preferably, the elastic component is arranged to enable the transmission rod to be abutted against the hole end C771 of the transmission hole under the action of elastic restoring force of the elastic component. The elastic member is, for example, a compression spring provided in the transmission hole and located between the transmission rod and the hole end D772 of the transmission hole.

The transmission hole 77 is an arc-shaped through hole penetrating in the radial direction of the first coupling ring 72 and extending in the circumferential direction of the first coupling ring 72, and the transmission rod moves in the arc length direction of the transmission hole. Through setting up drive hole and transfer line, can realize first movable ring and the synchronous linkage of second movable ring and delay linkage to realize normal double-speed output and the unblock of backing a car.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (10)

1. A two-speed hub motor for tightening and unlocking comprising:

the support assembly comprises a main shaft, a shell, a planet gear carrier and an end cover, wherein the shell is rotatably arranged on the outer side of the main shaft, the planet gear carrier is fixedly arranged on the main shaft, the planet gear carrier is arranged on the inner side of the shell, the end cover is rotatably connected to the main shaft, and the end cover is fixedly connected to one end of the shell;

The transmission assembly is arranged on the inner side of the shell and comprises a motor, a sun gear, a planetary gear, an output gear ring, a gear ring clutch, an output gear and a gear clutch, wherein the motor is fixedly arranged on the main shaft, the sun gear is in transmission connection with a rotor of the motor, the planetary gear is rotatably arranged on the planetary gear carrier, the planetary gear is in meshed transmission with the sun gear, the output gear ring is meshed on the outer side of the planetary gear, the output gear is rotatably connected with the main shaft, and the output gear is meshed with the planetary gear;

when the rotor of the motor actively rotates in a clockwise direction, the output gear ring rotates in a counterclockwise direction, the gear ring clutch is in a locking state, the output gear rotates in the clockwise direction, the gear clutch is in an unlocking state, and the end cover rotates along with the output gear ring in a counterclockwise direction at a low speed;

when the rotor of the motor actively rotates in the anticlockwise direction, the output gear ring rotates in the clockwise direction, the gear ring clutch is in an unlocking state, the output gear rotates in the anticlockwise direction, the gear clutch is in a locking state, and the end cover rotates along with the output gear at a high speed in the anticlockwise direction;

The clutch is characterized in that one of the gear ring clutch and the gear clutch is a wedge clutch, and the other is a linkage clutch;

the wedge type clutch comprises a first connecting ring, a first linkage ring, a plurality of wedges, a retainer, an elastic component and a tightening ring, wherein the first connecting ring and the first linkage ring are coaxially sleeved to form an annular space therebetween, the wedges, the retainer and the elastic component are all arranged in the annular space, the wedges are sequentially arranged along the circumferential direction of the annular space and can unlock and lock the first connecting ring and the first linkage ring, the retainer and the first linkage ring are relatively fixed, the retainer separates different wedges and keeps the wedges in the annular space, the elastic component is elastically compressed in a first groove outside the wedges and is used for keeping the wedges in a locking posture, the tightening ring is arranged in the annular space and is hooped in a second groove outside the wedges, one end of the tightening ring and the first ring are relatively fixed, and the inner diameter of the tightening ring can be adjusted between a first inner diameter and a second inner diameter, and the inner diameter of the tightening ring is larger than the first inner diameter;

The linkage clutch comprises a second connecting ring and a second linkage ring, wherein the second connecting ring and the second linkage ring are coaxially sleeved and can be mutually unlocked and locked;

the first connecting ring, the first linkage ring, the second linkage ring and the second connecting ring are coaxially sleeved in sequence, the innermost connecting ring is connected with the output gear, and the outermost connecting ring is connected with the output gear ring;

the end cover is connected with the first linkage ring, the other end of the tightening ring is connected with the second linkage ring through a transmission part, and the transmission part and the first linkage ring can rotate relatively for a set angle and are mutually transmitted;

when the rotor of the motor actively rotates and the wedge block clutch is in a locking state, the linkage clutch is in an unlocking state, the first linkage ring rotates in the anticlockwise direction and synchronously pushes the second linkage ring to rotate in the same direction, the inner diameter of the tightening ring is kept at a first inner diameter, and the first connecting ring and the wedge block are mutually propped to enable the wedge block to be kept in a locking state;

when the rotor of the motor actively rotates and the wedge type clutch is in an unlocking state, the linkage clutch is in a locking state, the second linkage ring rotates in a counterclockwise direction for a set angle and then pushes the first linkage ring to rotate in the same direction, the movable end of the tightening ring moves along with the transmission part to adjust the inner diameter of the tightening ring to be a second inner diameter, and the first connection ring and the wedge slip to push the wedge to reversely swing from a locking state to an unlocking state;

When the end cover actively rotates clockwise, the first linkage ring rotates clockwise along with the end cover and drives the second linkage ring to reversely rotate for a set angle, the movable end of the tightening ring moves along with the transmission part to adjust the inner diameter of the tightening ring to be a second inner diameter, the tightening ring drives the wedge block to reversely swing from a locking state to an unlocking state, the wedge block clutch is in an unlocking state, and the linkage clutch is in a locking state.

2. The grip unlocked two speed in-wheel motor of claim 1, wherein a beginning end of the grip ring in a counterclockwise direction is relatively fixed to the first linkage ring, and a terminating end of the grip ring in a counterclockwise direction is connected to the transmission member.

3. The grip unlocked two speed in-wheel motor of claim 1 wherein when said ring gear clutch is said wedge clutch, said gear clutch is said linked clutch and reverse is clockwise; when the gear ring clutch is the linkage clutch, the gear clutch is the wedge clutch, and the reverse direction is the anticlockwise direction.

4. The tightening and unlocking two-speed hub motor according to claim 1, wherein the first linkage ring is provided with a transmission hole extending along the radial direction, one end of the transmission hole is communicated with the annular space, the other end of the transmission hole is opposite to the second linkage ring, the transmission part is a transmission rod penetrating through the transmission hole, and the transmission rod and the transmission hole can rotate by a set angle relatively.

5. The grip unlocked two speed in-wheel motor of claim 1 wherein the second groove has a forward groove end facing forward and a reverse groove end facing reverse, the distance between the grip ring and the forward groove end being L1 when the wedge clutch is in the locked condition, the distance between the grip ring and the forward groove end being L2 when the wedge clutch is in the first unlocked condition and the second unlocked condition, L2 being less than L1.

6. The grip unlocked two speed in-wheel motor of claim 5 wherein said grip ring contacts said forward slot end when said wedge clutch is in a second unlocked state.

7. The grip unlocked two speed hub motor of claim 1 wherein said grip ring is a steel wire extending circumferentially of said annular space.

8. The grip unlocked two speed in-wheel motor of claim 1 wherein the resilient member is an extension spring extending axially of the annular space and connected end to end.

9. The grip unlocked two speed in-wheel motor of claim 1, wherein one of said elastic members is disposed between two of said grip rings or one of said grip rings is disposed between two of said elastic members.

10. The grip unlocked two speed in-wheel motor of claim 1 wherein the cage is of unitary construction.