Differential mechanism and vehicle

Abstract

The utility model discloses a differential mechanism and a vehicle, the differential mechanism comprises a differential mechanism shell, a half axle gear is arranged in the differential mechanism shell, the differential mechanism shell is in transmission connection with a transmission shaft, and a first combination gear is arranged on the differential mechanism shell; the first output shaft is in transmission connection with the half axle gear, and second combination teeth are arranged on the first output shaft; the second output shaft is in transmission connection with the half shaft, and third combination teeth are arranged on the second output shaft; the gear sleeve is meshed with the third combination teeth; or the gear sleeve is meshed with the second combination tooth and the third combination tooth; or the gear sleeve is meshed with the first combination tooth, the second combination tooth and the third combination tooth. Wherein the gear sleeve is meshed with the first combination tooth, the second combination tooth and the third combination tooth, so that integration of three functions of differential, releasing and locking can be realized; the first output shaft and the second output shaft are disconnected under the high-speed working condition, and energy loss is reduced; and the differential shell and the second output shaft are meshed under the cross-country working condition, and the escape capacity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of differentials, in particular to a differential and a vehicle. Background Art

[0002] With the continuous development of new energy vehicles, major car companies have also deployed more new energy products in the light off-road and off-road markets. Among these types of vehicles, hybrid models mostly use P4 rear axles to achieve four-wheel drive, and pure electric models use front and rear axle motors to achieve four-wheel drive.

[0003] In the related art, a differential lock can be installed in the differential of a vehicle. However, when the auxiliary drive axle does not participate in driving or the vehicle is coasting under high-speed conditions, the wheel-end power is transmitted to the reducer, causing oil churning losses and reducing the vehicle's cruising range. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a differential, which can realize the integration of the three functions of differential, disengagement and locking by meshing the gear sleeve with the first combination tooth, the second combination tooth and the third combination tooth.

[0005] The utility model also provides a vehicle.

[0006] The differential according to the first embodiment of the utility model includes: a differential case, wherein a half-axle gear is arranged in the differential case, the differential case is drivingly connected to the transmission shaft, and a first coupling tooth is arranged on the differential case; a first output shaft, wherein the first output shaft is drivingly connected to the half-axle gear, and a second coupling tooth is arranged on the first output shaft; a second output shaft, wherein the second output shaft is drivingly connected to the half-axle gear, and a third coupling tooth is arranged on the second output shaft; a gear sleeve, wherein the gear sleeve is meshed with the third coupling tooth; or the gear sleeve is meshed with the second coupling tooth and the third coupling tooth; or the gear sleeve is meshed with the first coupling tooth, the second coupling tooth and the third coupling tooth.

[0007] According to the differential of the embodiment of the utility model, the three functions of differential, disengagement and locking can be integrated by meshing the gear sleeve with the first combining teeth, the second combining teeth and the third combining teeth; the first output shaft and the second output shaft are disconnected under high-speed conditions to reduce energy loss; the differential case and the second output shaft are meshed under off-road conditions to improve the ability to get out of trouble.

[0008] According to some embodiments of the present utility model, the first output shaft includes: a first part, which is drivingly connected to the half-shaft gear; a second part, which is connected to the first part, and the second part extends radially outward along the first output shaft and is clamped between the differential case and the second output shaft, and the second coupling teeth are arranged on the outer periphery of the second part.

[0009] According to some embodiments of the utility model, a first meshing portion is provided on the outer periphery of one end of the first portion away from the second portion, a through hole is provided on the axis of the half-shaft gear, a second meshing portion is provided on the inner periphery of the through hole, and the first meshing portion and the second meshing portion mesh with each other.

[0010] According to some embodiments of the present utility model, the differential further includes: a first bearing, wherein the first bearing is sandwiched between the differential housing and the second part.

[0011] According to some embodiments of the utility model, the first output shaft also includes: a third part, the third part is connected to the side of the second part away from the first part; the second output shaft includes: a fourth part and a fifth part, the fourth part and the fifth part are connected to each other, the outer periphery of the fourth part is provided with the third combining tooth, and the fifth part is drivingly connected to the half-shaft; a second bearing is provided between the third part and the fourth part.

[0012] According to some embodiments of the utility model, the differential housing is provided with two axial holes arranged opposite to each other, the axial direction of the axial holes is consistent with the axial direction of the first output shaft, and the first output shaft passes through the axial holes to be drivingly connected with the half-shaft gears.

[0013] According to some embodiments of the present utility model, the differential further includes: a third bearing, wherein the third bearing is sandwiched between the first output shaft and the shaft hole.

[0014] According to some embodiments of the utility model, a first bevel gear is disposed on the differential housing, a second bevel gear is disposed on the transmission shaft, and the first bevel gear and the second bevel gear are meshed with each other.

[0015] According to some embodiments of the present utility model, a cavity is formed in the differential housing, and the planetary gear and the side gear are arranged in the cavity, and the side gear and the planetary gear are meshed.

[0016] A vehicle according to an embodiment of the second aspect of the utility model includes: the differential.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1is a schematic structural diagram of a differential according to an embodiment of the utility model;

[0020] Figure 2 is a schematic diagram of a disengagement mode of a differential according to an embodiment of the utility model;

[0021] Figure 3 is a schematic diagram of a differential mode of a differential according to an embodiment of the utility model;

[0022] Figure 4 Schematic diagram of the locking mode of the differential according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100. Differential;

[0025] 10. differential case; 11. side shaft gear; 12. planetary gear; 13. first coupling gear;

[0026] 20, first output shaft; 21, first portion; 22, second portion; 221, second coupling tooth; 23, third portion;

[0027] 30. second output shaft; 31. fourth portion; 311. third coupling tooth; 32. fifth portion;

[0028] 40. Gear sleeve; 41. First bearing; 42. Second bearing; 43. Third bearing. DETAILED DESCRIPTION

[0029] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0030] Reference below Figure 1-Figure 4 A differential 100 according to an embodiment of the present invention is described, and a vehicle including the differential 100 is also provided.

[0031] The differential 100 includes: a differential case 10, the differential case 10 and the transmission shaft are connected in driving manner, a first bevel gear is provided on the differential case 10, a second bevel gear is provided on the transmission shaft, and the first bevel gear and the second bevel gear are meshed. The first bevel gear and the second bevel gear are meshed, so that the transmission shaft and the differential case 10 are connected in driving manner, and the transmission shaft transmits the power of the engine or the power of the motor to the differential 100, and the differential 100 transmits the power to the wheel end to drive the wheel to rotate.

[0032] A cavity is formed in the differential case 10, and a planetary gear 12 and a side gear 11 are arranged in the cavity, and the side gear 11 and the planetary gear 12 are meshed. The axial direction of the side gear 11 and the planetary gear 12 is perpendicular to the direction of the first bevel gear, and the planetary gear 12 rotates with the first bevel gear. The side gear 11 meshes with the planetary gear 12, and the side gear 11 can rotate under the rotation of the planetary gear 12. The power of the engine or the power of the motor is transmitted from the transmission shaft to the differential case 10, and then transmitted to the side gear 11 through the planetary gear 12, and finally transmitted to the wheel end.

[0033] The differential 100 also includes: a first output shaft 20 and a second output shaft 30. The first output shaft 20 is drivingly connected to the half-shaft gear 11 so that the power of the engine or the power of the motor is transmitted from the half-shaft gear 11 to the first output shaft 20. The first output shaft 20 can be drivingly connected to the second output shaft 30, and the power of the engine or the power of the motor can be transmitted to the second output shaft 30; the second output shaft 30 is drivingly connected to the half-shaft, and can be transmitted to the wheel end through the half-shaft to drive the wheel to rotate.

[0034] The differential housing 10 is provided with a first combining tooth 13 ; the first output shaft 20 is provided with a second combining tooth 221 ; the second output shaft 30 is provided with a third combining tooth 311 , and the first combining tooth 13 , the second combining tooth 221 and the third combining tooth 311 are adjacently arranged.

[0035] The differential 100 also includes: a gear sleeve 40, which can be engaged with the first combining tooth 13 or the second combining tooth 221 or the third combining tooth 311, so that the second output shaft 30 can be connected to the first output shaft 20 or the differential case 10 in driving connection, thereby realizing the differential mode, disengagement mode or locking mode of the differential 100.

[0036] Differential mode

[0037] like Figure 3 As shown, when the wheels corresponding to the differential case 10 participate in the driving, the gear sleeve 40 meshes with the second combining teeth 221 and the third combining teeth 311, so that the second output shaft 30 and the first output shaft 20 are transmission-connected, and the power of the engine or the motor is transmitted to the differential case 10, and then transmitted to the half-shaft gear 11 in the differential case 10, and the half-shaft gear 11 transmits the power to the first output shaft 20, and then transmits it to the second output shaft 30 through the gear sleeve 40, and the second output shaft 30 transmits it to the half-shaft, and then to the wheels, driving the vehicle to move.

[0038] Disengagement mode:

[0039] like Figure 2As shown, when the vehicle is in front-wheel drive mode or rear-wheel drive mode, the rear wheels or the front wheels do not participate in the driving, so the gear sleeve 40 corresponding to the wheel not participating in the driving is meshed with the third combining tooth 311, so that the second output shaft 30 is not connected to the first output shaft 20 or the differential case 10, and the power of the engine or the motor cannot be transmitted to the second output shaft 30; since the second output shaft 30 and the first output shaft 20 are disconnected, the power from the wheel cannot be transmitted to the differential case 10 via the first output shaft 20, thereby reducing the oil stirring energy loss and improving the vehicle's cruising range.

[0040] Locking mode:

[0041] like Figure 4 As shown, when the vehicle is in an off-road condition and needs to escape, the gear sleeve 40 can mesh with the first combined tooth 13, the second combined tooth 221 and the third combined tooth 311, and then the first output shaft 20, the second output shaft 30 and the differential case 10 are connected, and the first output shaft 20, the second output shaft 30 and the differential case 10 are connected as a whole, and the power is transmitted from the power transmission device to the differential 100, and directly transmitted to the second output shaft 30 through the differential case 10, and then transmitted to the half shaft driven by the whole vehicle, and then transmitted to the wheel. When one of the two wheels on the front or rear side involved in the drive slips, the power can still be transmitted to the other wheel, thereby improving the vehicle's escape performance.

[0042] Thus, the gear sleeve 40 is meshed with the first combined tooth 13, the second combined tooth 221 and the third combined tooth 311, so that the integration of the three functions of differential, disengagement and locking can be realized; the first output shaft 20 and the second output shaft 30 are disconnected under high-speed conditions to reduce energy loss and improve the vehicle's cruising range; the differential housing 10 and the second output shaft 30 are meshed under off-road conditions to improve the ability to escape from difficulties. The differential 100 of the utility model has a simple structure, occupies a small space, is easy to arrange, and reduces costs.

[0043] Further, the differential case 10 is provided with two shaft holes arranged opposite to each other, the axial direction of the shaft holes is consistent with the axial direction of the first output shaft 20, and the first output shaft 20 passes through the shaft holes and is connected to the side gear 11 in a transmission manner. Specifically, since the differential 100 is connected to the two side gears in a transmission manner, the two side gears correspond to the two wheels on the left and right sides of the vehicle respectively. Then there are two side gears 11, the two side gears 11 are arranged opposite to each other, and there are two first output shafts 20 and two second output shafts 30. Shaft holes are provided on both sides of the differential case 10, and the shaft holes are arranged along the axial direction of the first output shaft 20. The two first output shafts 20 pass through the two shaft holes and are connected to the two side gears 11 in a transmission manner, so that the power can be transmitted from the side gear 11 to the first output shaft 20, and can be transmitted to the second output shaft 30 through the gear sleeve 40, and finally transmitted to the wheel end.

[0044] like Figure 2 As shown, the differential 100 further includes: a third bearing 43, which is sandwiched between the first output shaft 20 and the shaft hole. In other words, there can be two third bearings 43. The third bearing 43 is supported between the first output shaft 20 and the shaft hole. When in the differential mode, the third bearing 43 can enable the first output shaft 20 to rotate relative to the shaft hole.

[0045] Further, the first output shaft 20 includes: a first portion 21 and a second portion 22, the first portion 21 is transmission-connected with the side gear 11; the second portion 22 is connected with the first portion 21, the second portion 22 extends outwardly along the radial direction of the first output shaft 20 and is sandwiched between the differential case 10 and the second output shaft 30, and the outer periphery of the second portion 22 is provided with a second coupling tooth 221. Specifically, the first portion 21 and the second portion 22 are connected, the first portion 21 is transmission-connected with the side gear 11, so that the power can be transmitted from the side gear 11 to the first output shaft 20, and finally to the second output shaft 30, and further to the wheels; the second portion 22 is located on the side of the first portion 21 away from the side gear 11, the second portion 22 extends outwardly along the radial direction of the first output shaft 20, so that the second portion 22 extends between the differential case 10 and the second output shaft 30, and the outer periphery of the second portion 22 is provided with a second coupling tooth 221, and the second coupling tooth 221 is provided between the first coupling tooth 13 and the third coupling tooth 311.

[0046] like Figure 1-Figure 4 As shown, the first combining tooth 13, the second combining tooth 221 and the third combining tooth 311 are arranged adjacent to each other, so that the gear sleeve 40 can engage with the third combining tooth 311 alone to realize the disengagement mode; the gear sleeve 40 can engage with the second combining tooth 221 and the third combining tooth 311 to realize the differential mode; the gear sleeve 40 can also engage with the first combining tooth 13, the second combining tooth 221 and the third combining tooth 311 to realize the locking mode.

[0047] In some embodiments, a first meshing portion is disposed on the outer periphery of one end of the first portion 21 away from the second portion 22, a through hole is disposed on the axis of the side gear 11, and a second meshing portion is disposed on the inner periphery of the through hole, and the first meshing portion and the second meshing portion mesh with each other.

[0048] according to Figure 2 As shown, the first output shaft 20 also includes: a third portion 23, the third portion 23 is connected to the side of the second portion 22 away from the first portion 21, specifically, the second portion 22 is connected between the first portion 21 and the second portion 22, the first portion 21, the second portion 22 and the third portion 23 are arranged in sequence along the axial direction of the first output shaft 20, and the third portion 23 is located on the side of the second portion 22 away from the first portion 21.

[0049] like Figure 2As shown, the second output shaft 30 includes: a fourth portion 31 and a fifth portion 32, the fourth portion 31 and the fifth portion 32 are connected to each other, the outer periphery of the fourth portion 31 is provided with a third coupling tooth 311, and the fifth portion 32 is drivingly connected to the half shaft. Specifically, the outer periphery of the fourth portion 31 is provided with a third coupling tooth 311, the third portion 23 extends into the fourth portion 31, the fifth portion 32 is connected to the side of the fourth portion 31 away from the differential housing 10, and the second output shaft 30 is drivingly connected to the half shaft through the fifth portion 32, so that the power of the engine or the motor is transmitted from the second output shaft 30 to the half shaft and finally to the wheel; or the power of the wheel is transmitted to the differential housing 10 through the second output shaft 30 to recover the power at the wheel end.

[0050] according to Figure 2 As shown, the differential 100 further includes: a first bearing 41, the first bearing 41 is sandwiched between the differential housing 10 and the second part 22, and a second bearing 42 is disposed between the third part 23 and the fourth part 31. Specifically, the first bearing 41 may be a thrust bearing, and the second bearing 42 may be a deep groove ball bearing. The first bearing 41 and the second bearing 42 are respectively located on both sides of the axial direction of the second part 22, and the first output shaft 20 is limited by the first bearing 41 and the second bearing 42 with the differential housing 10 and the output shaft to prevent the first output shaft 20 from axial movement.

[0051] The vehicle according to the second embodiment of the utility model includes: a differential 100. The vehicle can realize the integration of three functions: differential, disengagement, and locking; disconnect the first output shaft 20 and the second output shaft 30 under high-speed conditions to reduce energy loss and improve the vehicle's cruising range; and engage the differential housing 10 and the second output shaft 30 under off-road conditions to improve the ability to escape from difficulties.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A differential, It is characterized in that include: A differential housing (10), wherein a half-axle gear (11) is disposed in the differential housing (10), the differential housing (10) is drivingly connected to a transmission shaft, and a first coupling tooth (13) is disposed on the differential housing (10); A first output shaft (20), the first output shaft (20) being drivingly connected to the side gear (11), and a second coupling tooth (221) being provided on the first output shaft (20); A second output shaft (30), the second output shaft (30) being drivingly connected to the half shaft, and a third coupling tooth (311) being provided on the second output shaft (30); A tooth sleeve (40), wherein the tooth sleeve (40) can be meshed with the third combining tooth (311); or, the tooth sleeve (40) is meshed with the second combining tooth (221) and the third combining tooth (311); or, the tooth sleeve (40) is meshed with the first combining tooth (13), the second combining tooth (221) and the third combining tooth (311).

2. The differential according to claim 1, It is characterized in that The first output shaft (20) comprises: A first part (21), the first part (21) is drivingly connected to the side gear (11); A second part (22), the second part (22) is connected to the first part (21), the second part (22) extends outwardly in the radial direction of the first output shaft (20) and is sandwiched between the differential case (10) and the second output shaft (30), and the second engaging teeth (221) are arranged on the outer periphery of the second part (22).

3. The differential according to claim 2, It is characterized in that A first meshing portion is provided on the outer periphery of one end of the first portion (21) away from the second portion (22), a through hole is provided on the axis of the half-shaft gear (11), a second meshing portion is provided on the inner periphery of the through hole, and the first meshing portion and the second meshing portion mesh with each other.

4. The differential according to claim 2, It is characterized in that Also includes: A first bearing (41), wherein the first bearing (41) is interposed between the differential case (10) and the second portion (22).

5. The differential according to claim 2, It is characterized in that The first output shaft (20) further comprises: a third portion (23), the third portion (23) being connected to a side of the second portion (22) facing away from the first portion (21); The second output shaft (30) comprises: a fourth portion (31) and a fifth portion (32), the fourth portion (31) and the fifth portion (32) being connected to each other, the outer periphery of the fourth portion (31) being provided with the third combining tooth (311), and the fifth portion (32) being drivingly connected to the half shaft; A second bearing (42) is provided between the third portion (23) and the fourth portion (31).

6. The differential according to claim 1, It is characterized in that The differential housing (10) is provided with two axial holes arranged opposite to each other, the axial direction of the axial holes is consistent with the axial direction of the first output shaft (20), and the first output shaft (20) passes through the axial holes and is drivingly connected to the half-shaft gear (11).

7. The differential according to claim 6, It is characterized in that Also includes: A third bearing (43), wherein the third bearing (43) is sandwiched between the first output shaft (20) and the shaft hole.

8. The differential according to claim 1, It is characterized in that The differential housing (10) is provided with a first bevel gear, the transmission shaft is provided with a second bevel gear, and the first bevel gear and the second bevel gear are meshed.

9. The differential according to claim 1, It is characterized in that A cavity is formed in the differential housing (10), a planetary gear (12) and the side gear (11) are arranged in the cavity, and the side gear (11) and the planetary gear (12) are meshed with each other.

10. A vehicle, It is characterized in that include: The differential (100) as claimed in claims 1 to 9.

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