Disconnected differential mechanism and automobile

Abstract

The utility model relates to the technical field of differential mechanisms, in particular to a disconnected differential mechanism and an automobile. The utility model provides a disconnected differential mechanism. The disconnected differential mechanism comprises an upper differential shell, a lower differential shell, a half axle gear, a planetary gear, a tooth embedding disc and a driving mechanism. The jaw disc is arranged at one end of the lower differential shell, first jaw teeth are arranged at the end, facing the lower differential shell, of the jaw disc, and second jaw teeth capable of being meshed with the first jaw teeth are arranged at the end, facing the jaw disc, of the lower differential shell. The driving mechanism is used for driving the tooth embedding disc to move towards the lower differential shell so that the first tooth embedding teeth can be meshed with the second tooth embedding teeth, when the first tooth embedding teeth are meshed with the second tooth embedding teeth, the tooth embedding disc is in transmission connection with the upper differential shell, and the driving mechanism is further used for driving the tooth embedding disc to move away from the lower differential shell so that the first tooth embedding teeth can be separated from the second tooth embedding teeth. And when the first jaw teeth are separated from the second jaw teeth, the transmission connection between the jaw disc and the lower differential shell is disconnected. The overall structure is simple, and manufacturing and assembling are convenient.

Description

Technical Field

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

[0002] With the popularity of new energy vehicles in the market, in order to reduce the energy loss caused by the auxiliary drive motor, it is imperative to disconnect the transmission system from the motor when not needed. At present, most of the methods used in the market are to disconnect from the differential, and the disconnection position is mainly placed on the planetary gear shaft inside the differential housing and the differential housing. This design adds a mechanism to control the disconnection of the planetary shaft and the differential housing inside the differential housing, resulting in a much larger volume of the entire assembly than the original traditional differential design, and the production is more complicated, the parts are difficult to assemble, and the production cost is very high. Utility Model Content

[0003] The utility model aims to provide a disconnect differential and a car to solve the technical problems that the existing disconnect differential is much larger than the original traditional differential design, is more complicated to manufacture, has difficult parts assembly and is very costly to manufacture.

[0004] The utility model provides a disconnect type differential, comprising: a differential housing, a half shaft gear, a planetary gear, a toothed plate and a driving mechanism;

[0005] The differential housing has a mounting cavity, the side shaft gear and the planetary gear are both arranged in the mounting cavity, and the side shaft gear is meshed with the planetary gear;

[0006] The differential housing comprises an upper differential housing and a lower differential housing, wherein the upper differential housing is sleeved on the lower differential housing and can rotate in a relative circumferential direction, and the half-shaft gear is drivingly connected to the lower differential housing;

[0007] The tooth plate is arranged at one end of the lower differential housing, and the end of the tooth plate facing the lower differential housing is provided with a first tooth tooth, and the end of the lower differential housing facing the tooth plate is provided with a second tooth tooth that can mesh with the first tooth tooth;

[0008] The driving mechanism is used to drive the tooth plate to move toward the lower differential housing so that the first tooth cog is engaged with the second tooth cog, and when the first tooth cog is engaged with the second tooth cog, the tooth plate is transmission connected to the upper differential housing. The driving mechanism is also used to drive the tooth plate to move away from the lower differential housing so that the first tooth cog is separated from the second tooth cog, and when the first tooth cog is separated from the second tooth cog, the transmission connection between the tooth plate and the lower differential housing is disconnected.

[0009] As a further technical solution, the driving mechanism includes a first driving device and a second driving device;

[0010] The first driving device is used to drive the toothed plate to move toward the lower differential housing;

[0011] The second driving device is used to drive the tooth plate to move away from the lower differential housing.

[0012] As a further technical solution, the first driving device includes an electromagnetic coil assembly and a push ring assembly, the push ring assembly is arranged on the lower differential housing, and the electromagnetic coil assembly and the push ring assembly are both arranged on a side of the toothed disk away from the lower differential housing;

[0013] The electromagnetic coil assembly is used to drive the push ring assembly to push the toothed disk to move toward the lower differential housing.

[0014] As a further technical solution, the push ring assembly includes an inner ring and an outer ring, the inner ring is sleeved on the lower differential housing, the outer ring is sleeved on the inner ring, and the outer ring is made of magnetic material, and the inner ring is made of non-magnetic material;

[0015] The electromagnetic coil assembly is used to drive the outer ring to move axially, and the outer ring drives the inner ring through the axial movement to push the toothed disk to move toward the lower differential housing.

[0016] As a further technical solution, the second driving device includes a return spring, which is arranged between the toothed disk and the lower differential housing, and the return spring provides a force for the toothed disk to move away from the lower differential housing.

[0017] As a further technical solution, the second driving device further includes a support plate, and the support plate is arranged between the tooth plate and the lower differential housing;

[0018] One end of the return spring abuts against the support plate, and the other end abuts against the toothed disk.

[0019] As a further technical solution, it also includes an adjusting gasket for adjusting the position of the half-shaft gear, and the adjusting gasket is integrally formed with the support plate.

[0020] As a further technical solution, it also includes a straight shaft and a locking pin, and the half-shaft gear is provided with a pair;

[0021] The planetary gear, one of the half-shaft gears, the straight shaft and the locking pin are all arranged in the lower differential housing, and the planetary gear is installed on the straight shaft, and the locking pin is installed on the straight shaft.

[0022] As a further technical solution, a plane needle roller bearing is arranged between the upper differential housing and the lower differential housing.

[0023] The utility model provides a car, comprising the disconnecting differential.

[0024] Compared with the prior art, the disconnect differential and the vehicle provided by the utility model have the following technical advantages:

[0025] The disconnect differential provided by the utility model comprises: a differential housing, a half-shaft gear, a planetary gear, a tooth plate and a driving mechanism; the differential housing is provided with a mounting cavity, the half-shaft gear and the planetary gear are both arranged in the mounting cavity, and the half-shaft gear meshes with the planetary gear; the differential housing comprises an upper differential housing and a lower differential housing, the upper differential housing is sleeved on the lower differential housing and can rotate in a relative circumferential direction, and the half-shaft gear is drivingly connected with the lower differential housing; the tooth plate is arranged at one end of the lower differential housing, and a first tooth plate is arranged at the end of the tooth plate facing the lower differential housing The toothed gear is a gear having a first tooth and a second toothed gear that can mesh with the first toothed gear. The drive mechanism is used to drive the toothed gear to move toward the lower differential housing so that the first toothed gear is meshed with the second toothed gear. When the first toothed gear is meshed with the second toothed gear, the toothed gear is connected to the upper differential housing by transmission. The drive mechanism is also used to drive the toothed gear to move away from the lower differential housing so that the first toothed gear is separated from the second toothed gear. When the first toothed gear is separated from the second toothed gear, the transmission connection between the toothed gear and the lower differential housing is disconnected.

[0026] The tooth plate is driven to move by the driving mechanism, so that the first tooth gear and the second tooth gear can be engaged and disengaged, thereby connecting or disconnecting the tooth plate and the lower differential case. The tooth plate is used as an intermediate torque transmission structure to achieve torque connection or disconnection between the upper differential case and the lower differential case, thereby achieving differential power disconnection. At the same time, the tooth plate directly cooperates with the lower differential case and the upper differential case to achieve torque connection or disconnection. The overall structure is simple, easy to manufacture and easy to assemble.

[0027] The automobile provided by the utility model includes the above-mentioned disconnecting differential, and the technical advantages and effects achieved by it include the technical advantages and effects achieved by the above-mentioned disconnecting differential, which will not be elaborated in detail here.

[0028] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1A cross-sectional view of a disconnect differential provided by an embodiment of the utility model;

[0031] Figure 2 An exploded view of a disconnect differential provided in an embodiment of the utility model.

[0032] Icons: 1- half-shaft gear; 2- planetary gear; 3- toothed plate; 4- upper differential housing; 5- lower differential housing; 6- electromagnetic coil assembly; 7- push ring assembly; 8- inner ring; 9- outer ring; 10- return spring; 11- support plate; 12- straight shaft; 13- locking pin; 14- plane needle roller bearing. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0037] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0038] Specific structure such as Figure 1 and Figure 2 shown.

[0039] The present embodiment provides a disconnecting differential, comprising: a differential housing, a half-axle gear 1, a planetary gear 2, a tooth plate 3 and a driving mechanism; the differential housing has a mounting cavity, the half-axle gear 1 and the planetary gear 2 are both arranged in the mounting cavity, and the half-axle gear 1 is meshed with the planetary gear 2; the differential housing comprises an upper differential housing 4 and a lower differential housing 5, the upper differential housing 4 is sleeved on the lower differential housing 5 and can rotate in a relative circumferential direction, and the half-axle gear 1 is transmission-connected with the lower differential housing 5; the tooth plate 3 is arranged at one end of the lower differential housing 5, and the tooth plate 3 is arranged toward one end of the lower differential housing 5. A first tooth cog is provided, and a second tooth cog that can mesh with the first tooth cog is provided at one end of the lower differential housing 5 facing the tooth cog plate 3; the driving mechanism is used to drive the tooth cog plate 3 to move toward the lower differential housing 5 so that the first tooth cog is meshed with the second tooth cog, and when the first tooth cog is meshed with the second tooth cog, the tooth cog plate 3 is transmission-connected with the upper differential housing 4, and the driving mechanism is also used to drive the tooth cog plate 3 to move away from the lower differential housing 5 so that the first tooth cog is separated from the second tooth cog, and when the first tooth cog is separated from the second tooth cog, the transmission connection between the tooth cog plate 3 and the lower differential housing 5 is disconnected.

[0040] In this embodiment, the tooth plate 3 is driven to move by the driving mechanism, so that the first tooth cog and the second tooth cog can engage and disengage, thereby connecting or disconnecting the tooth plate 3 and the lower differential case 5 in transmission, and the tooth plate 3 is used as an intermediate torque transmission structure to achieve torque connection or disconnection between the upper differential case 4 and the lower differential case 5, thereby achieving differential power disconnection. At the same time, the tooth plate 3 directly cooperates with the lower differential case 5 and the upper differential case 4 to achieve torque connection or disconnection. The overall structure is simple, easy to manufacture and easy to assemble.

[0041] In this embodiment, the upper differential housing 4 is formed by half of the differential housing and the gear ring, and the structure is simple and stable. At the same time, the gear ring cooperates with the tooth plate 3 to realize the transmission connection between the tooth plate 3 and the upper differential housing 4. During installation, the tooth plate 3 is installed from the inside of the upper differential housing 4, passing through the upper differential housing 4, and the tooth plate 3 can slide axially through the upper differential housing 4, and in the circumferential direction, it can transmit torque and speed with the upper differential housing 4. In addition, the disconnect differential is also provided with a plane needle bearing 14, which is arranged between the upper differential housing 4 and the lower differential housing 5.

[0042] In the optional technical solution of this embodiment, the driving mechanism includes a first driving device and a second driving device; the first driving device is used to drive the toothed disc 3 to move toward the lower differential housing 5; the second driving device is used to drive the toothed disc 3 to move away from the lower differential housing 5.

[0043] In this embodiment, the first driving device is used to drive the toothed disc 3 to move toward the lower differential housing 5, and the second driving device is used to drive the toothed disc 3 to move away from the lower differential housing 5, thereby improving the driving stability.

[0044] However, the present embodiment is not limited thereto, and the driving mechanism may also be a separate driving device, which drives the toothed disc 3 to move in two axial directions.

[0045] In the optional technical solution of this embodiment, the first driving device includes an electromagnetic coil assembly 6 and a push ring assembly 7, the push ring assembly 7 is arranged on the lower differential shell 5, and the electromagnetic coil assembly 6 and the push ring assembly 7 are both arranged on the side of the toothed disk 3 away from the lower differential shell 5; the electromagnetic coil assembly 6 is used to drive the push ring assembly 7 to push the toothed disk 3 to move toward the lower differential shell 5.

[0046] In this embodiment, the electromagnetic coil assembly 6 is fixed to the outside to provide a magnetic field. The push ring assembly 7 generates an electromagnetic force under the action of the magnetic field, thereby pushing the toothed disk 3 to move axially toward the lower differential housing 5. The drive is stable and convenient, and it occupies little space.

[0047] Specifically, the push ring assembly 7 includes an inner ring 8 and an outer ring 9. The inner ring 8 is sleeved on the lower differential housing 5, and the outer ring 9 is sleeved on the inner ring 8. The outer ring 9 is made of magnetic material, and the inner ring 8 is made of non-magnetic material. The electromagnetic coil assembly 6 is used to drive the outer ring 9 to move axially. The outer ring 9 drives the inner ring 8 through axial movement to push the toothed disk 3 toward the lower differential housing 5.

[0048] In this embodiment, the outer ring 9 is sleeved on the inner ring 8, and the outer ring 9 is made of magnetic material, and generates electromagnetic force under the action of the magnetic field, so that it can move axially toward the lower differential housing 5. The inner ring 8 is sleeved on the lower differential housing 5, and the inner ring 8 can move axially and rotate circumferentially. The inner ring 8 is made of non-magnetic material, which isolates the magnetic field and can transmit the electromagnetic force generated by the outer ring 9. Under the action of the outer ring 9, it moves axially toward the lower differential housing 5, thereby pushing the toothed disc 3 to move toward the lower differential housing 5.

[0049] In the optional technical solution of this embodiment, the second driving device includes a return spring 10, which is arranged between the tooth plate 3 and the lower differential housing 5, and the return spring 10 provides a force for the tooth plate 3 to move away from the lower differential housing 5. When the electromagnetic force does not exist, the return spring 10 pushes the tooth plate 3 away from the lower differential housing 5. The structure is simple, the installation is convenient, and the driving effect is good.

[0050] Preferably, the return spring 10 is a compression spring, which always provides a force for the toothed disc 3 to move away from the lower differential housing 5 in the axial direction.

[0051] In the optional technical solution of this embodiment, the second driving device further includes a support plate 11, which is arranged between the toothed disc 3 and the lower differential housing 5; one end of the return spring 10 abuts against the support plate 11, and the other end abuts against the toothed disc 3. The arrangement of the support plate 11 enables the return spring 10 to have a better and more stable return function, while preventing the return spring 10 from directly abutting against the lower differential housing 5.

[0052] The optional technical solution of this embodiment further includes an adjusting gasket for adjusting the position of the half-shaft gear 1 , and the adjusting gasket is integrally formed with the support plate 11 .

[0053] In this embodiment, the adjusting gasket and the supporting plate 11 are integrally formed, which is convenient to manufacture and has a stable structure. It has two functions of adjusting the position of the half-shaft gear 1 and supporting the return spring 10, which reduces the occupied space and the number of parts.

[0054] The optional technical solution of this embodiment also includes a straight shaft 12 and a locking pin 13, and a pair of side shaft gears 1 are provided; the planetary gear 2, one side shaft gear 1, the straight shaft 12 and the locking pin 13 are all arranged in the lower differential housing 5, and the planetary gear 2 is installed on the straight shaft 12, and the locking pin 13 is installed on the straight shaft 12. The overall structure is simple and easy to assemble, and the function is stable.

[0055] In an optional technical solution of this embodiment, a stopper structure is provided between the upper differential housing 4 and the lower differential housing 5 , and the upper differential housing 4 and the lower differential housing 5 are positioned by the stopper structure and the relative end faces.

[0056] In this embodiment, the upper differential shell 4 is sleeved on the lower differential shell 5, and is positioned by the stop structure and the relative end faces between the upper differential shell 4 and the lower differential shell 5. The assembly is convenient and the structure is simple. At the same time, the structure is stable and the upper differential shell 4 and the lower differential shell 5 can rotate circumferentially.

[0057] In this embodiment, after the upper differential housing 4, the lower differential housing 5, the planetary gears 2, the side gears 1, the straight shaft 12 and the locking pin 13 are all assembled, the speed is input from the side gears 1 on both sides to form a differential function.

[0058] The present embodiment provides a car, including the above-mentioned disconnecting differential. Therefore, the technical advantages and effects achieved by the car include the technical advantages and effects achieved by the above-mentioned disconnecting differential, which will not be repeated here.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A disconnect differential, characterized in that: include: A differential housing, axle gears (1), planetary gears (2), a toothed plate (3) and a driving mechanism; The differential housing has a mounting cavity, the side shaft gear (1) and the planetary gear (2) are both arranged in the mounting cavity, and the side shaft gear (1) is meshed with the planetary gear (2); The differential housing comprises an upper differential housing (4) and a lower differential housing (5); the upper differential housing (4) is sleeved on the lower differential housing (5) and can rotate in a relative circumferential direction; the half-shaft gear (1) is drivingly connected to the lower differential housing (5); The toothed disc (3) is arranged at one end of the lower differential housing (5), and the end of the toothed disc (3) facing the lower differential housing (5) is provided with a first toothed tooth, and the end of the lower differential housing (5) facing the toothed disc (3) is provided with a second toothed tooth capable of meshing with the first toothed tooth; The driving mechanism is used to drive the toothed disc (3) to move toward the lower differential housing (5) so that the first toothed teeth mesh with the second toothed teeth, and when the first toothed teeth mesh with the second toothed teeth, the toothed disc (3) is transmission-connected with the upper differential housing (4); the driving mechanism is also used to drive the toothed disc (3) to move away from the lower differential housing (5) so that the first toothed teeth separate from the second toothed teeth, and when the first toothed teeth separate from the second toothed teeth, the transmission connection between the toothed disc (3) and the lower differential housing (5) is disconnected.

2. The disconnect differential according to claim 1, characterized in that: The driving mechanism comprises a first driving device and a second driving device; The first driving device is used to drive the toothed plate (3) to move toward the lower differential housing (5); The second driving device is used to drive the toothed disc (3) to move away from the lower differential housing (5).

3. The disconnect differential according to claim 2, characterized in that: The first driving device comprises an electromagnetic coil assembly (6) and a push ring assembly (7), wherein the push ring assembly (7) is arranged on the lower differential housing (5), and the electromagnetic coil assembly (6) and the push ring assembly (7) are both arranged on a side of the toothed disc (3) away from the lower differential housing (5); The electromagnetic coil assembly (6) is used to drive the push ring assembly (7) to push the toothed disc (3) to move toward the lower differential housing (5).

4. The disconnect differential according to claim 3, characterized in that: The push ring assembly (7) comprises an inner ring (8) and an outer ring (9), wherein the inner ring (8) is sleeved on the lower differential housing (5), and the outer ring (9) is sleeved on the inner ring (8), and the outer ring (9) is made of a magnetic material, and the inner ring (8) is made of a non-magnetic material; The electromagnetic coil assembly (6) is used to drive the outer ring (9) to move axially, and the outer ring (9) drives the inner ring (8) through the axial movement to push the toothed disc (3) to move toward the lower differential housing (5).

5. The disconnect differential according to claim 2, characterized in that: The second driving device comprises a return spring (10), wherein the return spring (10) is arranged between the toothed disc (3) and the lower differential housing (5), and the return spring (10) provides a force for the toothed disc (3) to move away from the lower differential housing (5).

6. The disconnect differential according to claim 5, characterized in that: The second driving device further comprises a support plate (11), wherein the support plate (11) is arranged between the toothed plate (3) and the lower differential housing (5); One end of the return spring (10) abuts against the support plate (11), and the other end abuts against the toothed disc (3).

7. The disconnect differential according to claim 6, characterized in that: It also includes an adjustment gasket for adjusting the position of the half-shaft gear (1), and the adjustment gasket is integrally formed with the support plate (11).

8. The disconnect differential according to any one of claims 1 to 7, characterized in that: It also includes a straight shaft (12) and a locking pin (13), and the half-shaft gear (1) is provided with a pair; The planetary gear (2), one of the half-shaft gears (1), the straight shaft (12) and the locking pin (13) are all arranged in the lower differential housing (5), and the planetary gear (2) is mounted on the straight shaft (12), and the locking pin (13) is mounted on the straight shaft (12).

9. The disconnect differential according to any one of claims 1 to 7, characterized in that: A plane needle roller bearing (14) is provided between the upper differential housing (4) and the lower differential housing (5).

10. An automobile, characterized in that: A disconnect differential comprising the disconnect differential as described in any one of claims 1 to 9.

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