Locking apparatus, powertrain, power transmission system, and vehicle

Patent metadata

Field	Value
Publication number	US-2019338834-A1
Application number	US-201716475005-A
Country	US
Kind code	A1
Filing date	Dec 21, 2017
Priority date	Dec 30, 2016
Publication date	Nov 7, 2019
Grant date	—

Abstract

A locking apparatus, a powertrain, a power transmission system, and a vehicle, the locking system (200) comprising: a first flange (201a) and a second flange (201b); and first and second flange locking structures (Q1, Q2), the first and second flange locking structures (Q1, Q2) both being used for selectively locking the first flange (201a) and the second flange (201b) in order to make the second flange (201b) rotate synchronously with the first flange (201a), or in order to make the first flange (201a) rotate synchronously with the second flange (201b); the first and second flange locking structures (Q1, Q2) both comprise: a synchronising ring (202), the synchronising ring (202) being constantly connected to the corresponding flange in order to rotate synchronously with the corresponding flange, and the synchronising ring (202) being able to slide relative to the corresponding flange; and a drive assembly (203), the drive assembly (203) being capable of selectively pushing the synchronising ring to slide along the axial direction of the corresponding flange from an unlocked position to a locked position; when a synchronising ring (202) is positioned in the locked position, the two synchronising rings are connected, such that the other flange rotates synchronously with the flange corresponding to said synchronising ring. The present locking apparatus can implement a bidirectional locking function, and has a simple structure.

First claim

1 . A locking device, comprising:
a first flange, the first flange being adapted to be fixed on a first shaft; a second flange, the second flange being adapted to be fixed on a second shaft; a first flange locking structure, the first flange locking structure being configured to selectively lock the first flange and the second flange to be adapted to rotate the second flange synchronously with the first flange; and a second flange locking structure, the second flange locking structure being configured to selectively lock the second flange and the first flange to be adapted to rotate the first flange synchronously with the second flange, wherein the first flange locking structure and the second flange locking structure each comprise:
a synchronizing ring, the synchronizing ring being normally connected to the corresponding flange to be adapted to rotate synchronously with the corresponding flange, and the synchronizing ring being slidable relative to the corresponding flange; and
a driving component, the driving component selectively pushing the synchronizing ring to slide from an unlocked position to a locked position in an axial direction of the corresponding flange,
wherein when the synchronizing ring is in the locked position, the two synchronizing rings are connected to be adapted to rotate the other flange synchronously with the flange corresponding to the synchronizing ring, and when the synchronizing ring is in the unlocked position, the two synchronizing rings are separated.

2 . The locking device according to claim 1 , wherein the driving component comprises:
an electromagnet, the electromagnet being adapted to be fixed on a housing; an ejector pin, one end of the ejector pin being slidably connected to the corresponding flange; and a driving member, the driving member having a driving profile, and the other end of the ejector pin being matched with the driving profile, wherein the electromagnet is selectively energized, and when the electromagnet is energized, the driving member is fixed to drive the ejector pin to move in the axial direction of the corresponding flange through the driving profile, and to push the corresponding synchronizing ring to move from a position where the two synchronizing rings are separated to a position where the two synchronizing rings are connected.

3 . The locking device according to claim 2 , wherein the ejector pin and the driving profile are both multiple and in one-to-one correspondence, and the ejector pins are spaced apart in a circumferential direction of the corresponding flange.

4 . The locking device according to claim 2 , wherein the driving profile is a V-shaped profile, and in the axial direction of the corresponding flange, the opening of the V-shaped profile increases from one end away from the other flange to one end near the other flange.

5 . The locking device according to claim 4 , wherein in the axial direction of the corresponding flange, a side wall of the V-shaped profile extends along a straight line or an arc from one end away from the other flange to one end near the other flange.

6 . The locking device according to claim 2 , wherein the first flange locking structure and the second flange locking structure each further comprise a bushing, the bushing being sleeved over and fixed on the corresponding flange, and in the axial direction of the corresponding flange, the electromagnet being sandwiched between the bushing and the corresponding housing.

7 . The locking device according to claim 1 , wherein the first flange locking structure and the second flange locking structure each further comprise: a stop piece and an elastic return member, the elastic return member being connected to the stop piece, the stop piece being connected to the corresponding flange, in the axial direction of the corresponding flange, the elastic return member being located between the corresponding synchronizing ring and the stop piece, and during the movement of the corresponding synchronizing ring from the unlocked position to the locked position, the elastic return member is compressed.

8 . The locking device according to claim 7 , wherein the elastic return member is a wave spring.

9 . The locking device according to claim 2 , wherein the first flange and the second flange each comprise:
a fixing sleeve, the fixing sleeve being sleeved over and fixed on the corresponding shaft, and both the electromagnet and the driving member being sleeved over the fixing sleeve; a mounting sleeve, the mounting sleeve having a through hole extending through the mounting sleeve in the axial direction of the corresponding flange, and the ejector pin being slidably disposed in the through hole; and a guiding sleeve, the guiding sleeve being provided with a guiding groove, and the ejector pin being slidably disposed in the guiding groove.

10 . The locking device according to claim 9 , wherein in the axial direction of the corresponding flange, the fixing sleeve, the mounting sleeve and the guiding sleeve are connected sequentially and the distance to the other flange is decreased.

11 . The locking device according to claim 9 , wherein the guiding groove of the first flange is disposed on an inner circumferential surface of the guiding sleeve, and the guiding groove of the second flange is disposed on an outer circumferential surface of the guiding sleeve.

12 . The locking device according to claim 9 , wherein an outer circumferential surface of the synchronizing ring of the first flange locking structure is provided with an outer ring gear portion, and the inner circumferential surface of the guiding sleeve of the first flange locking structure is provided with an inner tooth groove matched with teeth of the outer ring gear portion; and
an inner circumferential surface of the synchronizing ring of the second flange locking structure is provided with an inner ring gear portion, and the outer circumferential surface of the guiding sleeve of the second flange locking structure is provided with an outer tooth groove matched with teeth of the inner ring gear portion.

13 . The locking device according to claim 2 , wherein an inner circumferential surface of the synchronizing ring of the first flange locking structure is provided with an inner ring gear portion, and the outer circumferential surface of the synchronizing ring of the second flange locking structure is provided with an outer tooth groove adapted to be matched with teeth of the inner ring gear portion.

14 . A power assembly, comprising:
a first power component and a second power component, the first power component being configured to drive a wheel on the left side, the second power component being configured to drive a wheel on the right side, the first power component and the second power component each comprising a motor and a transmission, and the transmission being adapted to be connected between the motor and the wheel on the corresponding side; and a locking device, comprising:
a first flange, the first flange being adapted to be fixed on a first shaft;
a second flange, the second flange being adapted to be fixed on a second shaft;
a first flange locking structure, the first flange locking structure being configured to selectively lock the first flange and the second flange to be adapted to rotate the second flange synchronously with the first flange; and
a second flange locking structure, the second flange locking structure being configured to selectively lock the second flange and the first flange to be adapted to rotate the first flange synchronously with the second flange,
wherein the first flange locking structure a

Assignees

• Byd Co Ltd

Inventors

• Zhu Yanyan
• Hua Yu
• Liu Jing
• Chai Lingdao
• Zhang Jintao

Classifications

• B60K17/34

  for driving both front and rear wheels, e.g. four wheel drive vehicles · CPC title

• B60K17/04

  characterised by arrangement, location or kind of gearing · CPC title

• F16H1/22 Primary

  with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts · CPC title

• F16D27/118

  with interengaging jaws or gear teeth · CPC title

• B60K17/08 Primary

  of mechanical type · CPC title