Dog tooth clutch assembly and gearbox

Abstract

The utility model relates to the technical field of vehicles, and provides a dog-tooth clutch assembly and a gearbox, and the dog-tooth clutch assembly comprises a first separation part, a second separation part and a generator shell. A first tooth group is arranged on the first surface of the first separating part; an annular groove is formed in the first shell face of the generator shell, and an inner spline is arranged on the inner circumferential wall of the annular groove. The second separating part comprises a second surface, a second tooth group is arranged on the second surface, an external spline is arranged on the outer peripheral surface of the second separating part, the external spline can move in the extending direction of the internal spline, and the external spline comprises a first position and a second position; when the outer spline is located at the first position, the second separation piece is located at the separation position, and the first tooth set is separated from the second tooth set. When the outer spline is located at the second position, the second separating piece is located at the matching position, and the first tooth set is meshed with the second tooth set. According to the dog tooth clutch assembly provided by the embodiment, when a vehicle is in a forward gear and a reverse gear, the generator can provide assistance.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a dog clutch component and a gearbox. Background Art

[0002] With the rapid development of the automobile industry, new energy vehicles have emerged, and there are more and more structural forms of automobiles. The structure of the gearbox has also been continuously improved and adjusted, and the Dedicated Hybrid Transmission (DHT) came into being.

[0003] In the actual use of the vehicle, in order to prevent the engine shaft from reversing, a one-way clutch is generally provided to prevent the engine shaft from reversing. However, after the one-way clutch is provided, the engine can only be locked in one direction of rotation. Therefore, the generator can only provide assistance in the reverse gear and cannot provide assistance in the forward gear. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a dog clutch assembly and a gearbox.

[0005] In a first aspect, the present application provides a dog clutch assembly, which may include: a first separating member of a circular ring structure, which is sleeved on the circumferential outer side of an engine shaft and connected to the engine shaft, the first separating member including a first surface facing the generator, the first surface being provided with a first tooth group, the first tooth group being arranged around the circumferential outer side of the engine shaft; a generator housing, the generator housing including a first outer shell surface opposite to the first surface, the first outer shell surface being provided with an annular groove, the annular groove being arranged around the circumferential outer side of the engine shaft, the inner circumferential wall of the annular groove being provided with an inner spline; a second separating member of a circular ring structure, which is sleeved on the circumferential outer side of an engine shaft and connected to the engine shaft, the first separating member including a first surface facing the generator, the first surface being provided with a first tooth group, the first tooth group being arranged around the circumferential outer side of the engine shaft, the inner circumferential wall of the annular groove being provided with an inner spline; A separation piece, the second separation piece includes a second surface opposite to the first surface, the second surface is provided with a second tooth group, the outer peripheral surface of the second separation piece is provided with an external spline, the external spline is keyed to the internal spline, and the external spline can move along the extension direction of the internal spline, and the external spline includes a first position and a second position; wherein, when the external spline is in the first position, the second separation piece is in the separation position, the external spline is keyed to the internal spline, and the first tooth group is separated from the second tooth group; when the external spline is in the second position, the second separation piece is in the mating position, the external spline is keyed to the internal spline, and the first tooth group is meshed with the second tooth group.

[0006] In this way, on the one hand, by adjusting the second separation member to the matching position, the engine can be locked so that the engine cannot rotate. Thus, when the vehicle is in the forward gear, the second separation member is adjusted to the matching position, the engine shaft is locked, and the generator can provide power assistance to the vehicle; when the vehicle is in the reverse gear, the second separation member is adjusted to the matching position, the engine shaft is locked, and the generator can provide power assistance to the vehicle.

[0007] On the other hand, when the on-board computer predicts that the engine shaft has the possibility of reverse rotation based on the rotation state of the ring gear and the sun gear, the second separation member is adjusted to the matching position to stop the engine shaft from rotating, thereby avoiding the engine from reversing and ensuring the normal use of the engine. When the on-board computer predicts that the engine shaft has no possibility of reverse rotation based on the rotation state of the ring gear and the sun gear, the second separation member is adjusted to the separation position, and the engine shaft can provide power for the vehicle.

[0008] In some embodiments of the present application, the bottom wall of the annular groove is provided with an oil inlet, and the oil inlet is connected to the oil circuit.

[0009] In some embodiments of the present application, the dog clutch assembly further includes: a sealing ring, which is located on a side of the second separating member facing away from the first separating member and connected to the second separating member, and is sealingly connected to the peripheral wall of the annular groove.

[0010] In some embodiments of the present application, the second separation member includes a guide portion, which extends into the annular groove and cooperates with the annular groove, and the sealing ring is located between the bottom wall of the annular groove and the guide portion.

[0011] In some embodiments of the present application, the outer circumferential surface of the guide portion is provided with a first annular groove, and the first annular groove extends along the circumference of the second separating member; and / or, the inner circumferential surface of the guide portion is provided with a second annular groove, and the second annular groove extends along the circumference of the second separating member.

[0012] In some embodiments of the present application, the dog clutch assembly also includes: an auxiliary separation member, the auxiliary separation member includes a fixed end and a free end, the fixed end is connected to the generator housing, and the free end is provided with a folded edge folded away from the engine shaft, and the folded edge is located between the first separation member and the second separation member; an elastic member, one end of the elastic member abuts against the folded edge, and the other end abuts against the second separation member.

[0013] In some embodiments of the present application, the second separating member includes a meshing portion of a circular ring structure and an abutting portion of a circular ring structure, the meshing portion is located on the circumferential outside of the abutting portion and is connected to the abutting portion, the second tooth group and the external spline are arranged in the meshing portion, and the abutting portion abuts against the elastic member.

[0014] In some embodiments of the present application, the first separating member includes a connected functional portion and a connecting portion, the functional portion is a circular ring structure, the functional portion is sleeved on the circumferential outer side of the engine shaft, the first tooth group is arranged on the functional portion, and the connecting portion is located on the side of the functional portion away from the second separating member and is connected to the engine shaft.

[0015] In some embodiments of the present application, the internal splines extend to the first outer shell surface.

[0016] In the second aspect, the present application also provides a gearbox, including: planetary gears, including: a sun gear, a planetary gear, a planetary carrier and a ring gear, the sun gear is connected to the generator, the planetary carrier is connected to the engine shaft, and the ring gear is connected to the drive motor shaft; the dog clutch assembly described in any of the above schemes, the first clutch member of the dog clutch assembly is connected to the planetary carrier.

[0017] Among them, the technical effects brought about by any design scheme in the second aspect can refer to the technical effects brought about by different design methods in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A partial schematic diagram of a gearbox provided for some embodiments of the present application;

[0021] Figure 2 for Figure 1 An enlarged view of A shown in FIG.

[0022] Figure 3 for Figure 1 A schematic diagram of a first separation member shown in ;

[0023] Figure 4 for Figure 3 A cross-sectional view of a first separation member shown in ;

[0024] Figure 5 for Figure 1 A schematic diagram of the first separation member shown in ;

[0025] Figure 6 for Figure 6 A cross-sectional view of the first separation member shown in ;

[0026] Figure 7 for Figure 1 A schematic diagram of the auxiliary separation member shown in ;

[0027] Figure 8 for Figure 7 A cross-sectional view of the auxiliary separation member shown in FIG.

[0028] Reference numerals:

[0029] 100. Gearbox;

[0030] 110, first separation member; 111, functional portion; 1111, first tooth; 112, connection portion;

[0031] 120, second separation member; 121, meshing portion; 1211, second tooth; 1212, external spline; 122, abutment portion; 123, guide portion; 1231, first annular groove; 1232, second annular groove;

[0032] 130, generator housing; 1301, first housing surface; 131, annular groove; 1311, oil inlet; 132, internal spline;

[0033] 140, sealing ring;

[0034] 150, auxiliary separation piece; 151, folding edge;

[0035] 160, elastic member;

[0036] 101, sun gear; 102, planetary gear; 103, planet carrier; 104, ring gear; 105, generator; 106, drive motor shaft;

[0037] 200. Engine shaft. DETAILED DESCRIPTION

[0038] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0040] The car gearbox is a transmission device used to coordinate the engine speed and the actual driving speed of the wheels, so as to bring out the best performance of the engine. The gearbox can produce different speed ratios between the engine and the wheels during the driving process of the car, so as to achieve the transmission of speeds in different gears.

[0041] The gearbox is an important transmission component in traditional automobiles. It generally includes components such as the clutch, planetary gears, torque converter, input shaft, output shaft, housing, and various standard parts such as bearings, gaskets, and retaining springs. It transmits or cuts off power through the internal clutch and planetary gears working together.

[0042] With the rapid development of the automobile industry, new energy vehicles have emerged, and there are more and more structural forms of automobiles. The structure of the gearbox has also been continuously improved and adjusted, and the Dedicated Hybrid Transmission (DHT) came into being.

[0043] In some embodiments of this application, please refer to Figure 1 , a gearbox 100 is provided, which may include a generator 105, a drive motor and planetary gears, wherein the planetary gears may include a sun gear 101, planetary gears 102, a planet carrier 103 and a ring gear 104, the sun gear 101 is transmission-connected to the engine shaft 200, the planet carrier 103 is transmission-connected to the engine shaft 200, the ring gear 104 is transmission-connected to the drive motor shaft 106, and the transmission between the engine, the generator 105 and the drive motor is realized through the planetary gears.

[0044] Specifically, the rotation of the engine can drive the generator 105 to rotate, so that the generator 105 generates electricity, and the generator 105 can supply power to the drive motor. The rotation of the drive motor can be coupled with the rotation of the engine to provide assistance for the movement of the vehicle.

[0045] Among them, when the rotation state (direction and speed) between any two of the sun gear 101, the planetary carrier 103 and the ring gear 104 is determined, the rotation state of the third one is determined accordingly. For example, when the rotation state of the drive motor and the generator 105 is determined, that is, the rotation state of the ring gear 104 and the sun gear 101 is determined, the rotation state of the planetary carrier 103 is determined, that is, the rotation state of the engine shaft 200 is determined.

[0046] Therefore, in the actual use of the vehicle, in order to prevent the engine shaft from reversing, a one-way clutch is generally provided to prevent the engine shaft from reversing. However, after the one-way clutch is provided, the engine can only be locked in one rotation direction. Therefore, the generator can only provide assistance in the reverse gear and cannot provide assistance in the forward gear.

[0047] To solve the above technical problems, please refer to Figure 1 and Figure 2 The present application provides a dog clutch assembly. For the convenience of the following description, a rectangular coordinate system is established, with the axial direction of the engine shaft 200 as the X-axis and the radial direction of the engine shaft 200 as the Y-axis. The dog clutch assembly may include: a first separation member 110, a second separation member 120 and a generator housing 130.

[0048] Among them, see Figure 3 and Figure 4The first separating member 110 is formed into a circular ring structure, which is sleeved on the circumferential outer side of the engine shaft 200 and fixedly connected to the engine shaft 200 through the planet carrier 103. The first separating member 110 includes a first surface facing the generator 105, and the first surface is provided with a first tooth group, and the first tooth group is arranged around the circumferential outer side of the engine shaft 200, wherein the first tooth group includes a plurality of first teeth 1111, and the plurality of first teeth 1111 are arranged at intervals on the axial outer side of the engine shaft 200.

[0049] Specifically, the first separation member 110 may include a functional portion 111 and a connecting portion 112, the functional portion 111 is formed into a circular ring structure, the functional portion 111 is sleeved on the circumferential outer side of the engine shaft 200, the first tooth group is provided on the functional portion 111, and the connecting portion 112 is located on a side of the functional portion 111 away from the generator 105 (for example Figure 4 ), and is connected to the planet carrier 103 to achieve the connection between the first separation member 110 and the engine shaft 200.

[0050] The connection portion 112 is formed as an arc-shaped plate, and the connection portion 112 is connected to the outer peripheral surface of the planet carrier 103 . Specifically, the connection portion 112 is welded to the planet carrier 103 .

[0051] Furthermore, the number of connecting parts 112 can be multiple, and the multiple connecting parts 112 are arranged at intervals in the circumferential direction of the planetary carrier 103. Specifically, the number of connecting parts 112 is four, and the four connecting parts 112 are evenly spaced in the circumferential direction of the planetary carrier 103 to ensure the stability of the connection between the first separation part 110 and the planetary carrier 103, and further ensure the stability of the connection between the first separation part 110 and the engine shaft 200.

[0052] Please continue Figure 5 and Figure 6 , and refer to Figure 2 The generator housing 130 may include a first housing surface 1301 opposite to the first surface, the first housing surface 1301 is provided with an annular groove 131, the annular groove 131 is arranged around the circumferential outer side of the engine shaft 200, the inner circumferential wall of the annular groove 131 is provided with an internal spline 132, the second separation piece 120 is formed as a circular ring structure, and the annular groove 131 cooperates with the second separation piece 120.

[0053] The second separating member 120 may include a second surface opposite to the first surface, the second surface is provided with a second tooth group, the outer peripheral surface of the second separating member 120 is provided with an external spline 1212, the external spline 1212 is keyed to the internal spline 132, and the external spline 1212 can extend along the extension direction of the internal spline 132 (for example Figure 2, that is, in the extension direction of the inner spline 132, the length of the inner spline 132 is greater than the length of the outer spline 1212, and the outer spline 1212 includes a first position and a second position.

[0054] When the outer spline 1212 is in the first position, the second separation member 120 is in the separation position, the outer spline 1212 is bonded with the inner spline 132, and the first tooth group is separated from the second tooth group; at this time, the engine shaft 200 rotates normally.

[0055] When the external spline 1212 is in the second position, the second separating piece 120 is in the mating position, the external spline 1212 is keyed to the internal spline 132, and the first tooth group is meshed with the second tooth group, that is, the first separating piece 110 and the second separating piece 120 form a rigid body, the first separating piece 110 and the generator housing 130 form a rigid body, the second separating piece 120 and the engine shaft 200 form a rigid body, that is, the engine shaft 200 and the generator housing 130 form a rigid body, that is, the engine shaft 200 is limited to stop rotating.

[0056] In this way, on the one hand, by adjusting the second separation member 120 to the matching position, the engine can be locked so that the engine cannot rotate. Thus, when the vehicle is in the forward gear, the second separation member 120 is adjusted to the matching position, the engine is locked, and the generator can provide power for the vehicle; when the vehicle is in the reverse gear, the second separation member 120 is adjusted to the matching position, the engine is locked, and the generator can provide power for the vehicle.

[0057] On the other hand, when the driving computer predicts that the engine shaft 200 has the possibility of reverse rotation according to the rotation state of the ring gear 104 and the sun gear 101, the second separation member 120 is adjusted to the matching position, so that the engine shaft 200 stops rotating, thereby avoiding the reverse rotation of the engine shaft 200 and ensuring the normal use of the engine. When the driving computer predicts that the engine shaft 200 has no possibility of reverse rotation according to the rotation state of the ring gear 104 and the sun gear 101, the second separation member 120 is adjusted to the separation position, and the engine shaft 200 can provide power for the vehicle.

[0058] In some embodiments of this application, please continue to refer to Figure 1 The bottom wall of the annular groove 131 is provided with an oil inlet 1311, and the oil inlet 1311 is connected to the oil circuit. The second separator 120 cooperates with the annular groove 131, and part of the second separator 120 extends into the annular groove 131. By introducing hydraulic oil into the annular groove 131, the hydraulic oil pushes the second separator 120 to move in the X direction, and drives the second separator 120 from the separation position to the matching position.

[0059] It can be understood that the oil circuit is connected to the oil pump, and an electronic valve is provided between the oil pump and the oil inlet 1311 , and whether hydraulic oil is introduced into the annular groove 131 is controlled by the electronic valve.

[0060] In some embodiments of this application, please continue to refer to Figure 2 The dog clutch assembly may further include a sealing ring 140, which is located on a side of the second separating member 120 away from the first separating member 110 (eg Figure 2 The second separator 120 shown in the figure is on the negative side of the X-axis), and is connected to the second separator 120, and the sealing ring 140 is sealed and connected to the peripheral wall of the annular groove 131. Therefore, by providing the sealing ring 140, leakage of hydraulic oil in the annular groove 131 is avoided, and the stability of the overall operation of the equipment is ensured.

[0061] In some embodiments of this application, please continue to refer to Figure 5 and Figure 6 , and refer to Figure 2 The second separation member 120 may include a guide portion 123, which extends into the annular groove 131 and cooperates with the annular groove 131. The sealing ring 140 is located between the bottom wall of the annular groove 131 and the guide portion 123. In this way, by providing the guide portion 123 extending into the annular groove 131, the stability of the second separation member 120 moving between the separation position and the cooperation position can be further guaranteed.

[0062] The guide portion 123 is formed as a circular ring structure and cooperates with the annular groove 131 .

[0063] Furthermore, the outer circumferential surface of the guide portion 123 may be provided with a first annular groove 1231, which extends along the circumference of the second separating member 120, and the inner circumferential surface of the guide portion 123 may also be provided with a second annular groove 1232, which extends along the circumference of the second separating member 120. In this way, by providing the first annular groove 1231 and the second annular groove 1232, the interference between the second separating member 120 and the annular groove 131 can be reduced, thereby improving the smoothness and stability of the movement of the second separating member 120 relative to the annular groove 131.

[0064] In some embodiments of this application, please refer to Figure 7 and Figure 8 , and refer to Figure 2The dog clutch assembly may further include an auxiliary release member 150 and an elastic member 160. The auxiliary release member 150 is formed in a circular ring shape and is sleeved on the circumferential outer side of the engine shaft 200. In the axial direction of the auxiliary release member 150, the auxiliary release member 150 may include a fixed end and a free end. The fixed end is connected to the generator housing 130, and the free end is provided with a folded edge 151 folded away from the engine shaft 200. The folded edge 151 is located between the first release member 110 and the second release member 120. One end of the elastic member 160 abuts against the folded edge 151, and the other end abuts against the second release member 120. The elastic member 160 always applies a force to the second release member 120 away from the first release member 110.

[0065] In this way, when the second separation member 120 needs to return to the separation position from the mating position, the oil pump no longer injects hydraulic oil into the annular groove 131. Under the push of the elastic member 160, the second separation member 120 moves toward the bottom wall of the annular groove 131 and returns to the separation position from the mating position.

[0066] Therefore, by injecting hydraulic oil into the annular groove 131 and cooperating with the elastic member 160 , the movement of the second separation member 120 between the separation position and the matching position is achieved, and it is only necessary to control whether hydraulic oil is injected into the annular groove 131 .

[0067] Furthermore, the second separating member 120 may include a meshing portion 121 of a circular ring structure and an abutting portion 122 of a circular ring structure, wherein the meshing portion 121 is located on the circumferential outer side of the abutting portion 122 and is connected to the abutting portion 122, the second tooth group and the external spline 1212 are arranged in the meshing portion 121, and the abutting portion 122 is used to abut against the elastic member 160.

[0068] In some embodiments of the application, please continue to refer to Figure 1 and Figure 2 The inner spline 132 extends to the first outer shell surface 1301. In this way, when the second separation component 120 is assembled with the generator housing 130, the second separation component 120 can be directly assembled from the opening of the annular groove 131, which is easy to operate.

[0069] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are 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 device or element referred to 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.

[0070] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0071] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, 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 a limitation on the embodiments of the present utility model.

[0072] In the description of the embodiments of the present utility model, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0073] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dog clutch assembly, characterized in that: include: A first separating member of an annular structure is sleeved on the circumferential outer side of the engine shaft and connected to the engine shaft, wherein the first separating member comprises a first surface facing the generator, the first surface is provided with a first tooth group, and the first tooth group is arranged around the circumferential outer side of the engine shaft; A generator housing, the generator housing comprising a first housing surface opposite to the first surface, the first housing surface being provided with an annular groove, the annular groove being arranged around the circumferential outer side of the engine shaft, the inner circumferential wall of the annular groove being provided with an internal spline; A second separating member of a circular ring structure, the second separating member comprising a second surface opposite to the first surface, the second surface being provided with a second tooth set, an outer peripheral surface of the second separating member being provided with an external spline, the external spline being keyed to the internal spline, and the external spline being movable along an extension direction of the internal spline, and the external spline comprising a first position and a second position; Wherein, when the external spline is in the first position, the second separation member is in the separation position, the external spline is keyed with the internal spline, and the first tooth group is separated from the second tooth group; When the external spline is in the second position, the second separation member is in the mating position, the external spline is keyed to the internal spline, and the first tooth set is meshed with the second tooth set.

2. The dog clutch assembly according to claim 1, characterized in that: The bottom wall of the annular groove is provided with an oil inlet, and the oil inlet is communicated with the oil circuit.

3. The dog clutch assembly according to claim 2, characterized in that: Also includes: A sealing ring is located on a side of the second separating member that is away from the first separating member and is connected to the second separating member. The sealing ring is sealed to a peripheral wall of the annular groove.

4. The dog clutch assembly according to claim 3, characterized in that: The second separation member includes a guide portion, the guide portion extends into the annular groove and cooperates with the annular groove, and the sealing ring is located between the bottom wall of the annular groove and the guide portion.

5. The dog clutch assembly according to claim 4, characterized in that: The outer peripheral surface of the guide portion is provided with a first annular groove, and the first annular groove extends along the circumference of the second separation member; And / or, the inner circumferential surface of the guide portion is provided with a second annular groove, and the second annular groove extends along the circumferential direction of the second separating member.

6. The dog clutch assembly according to claim 1, characterized in that: Also includes: an auxiliary separator, the auxiliary separator comprising a fixed end and a free end, the fixed end being connected to the generator housing, the free end being provided with a folded edge folded away from the engine shaft, the folded edge being located between the first separator and the second separator; An elastic member, one end of which abuts against the folded edge, and the other end of which abuts against the second separating member.

7. The dog clutch assembly according to claim 6, characterized in that: The second separation member includes a meshing portion of a circular ring structure and an abutting portion of a circular ring structure, the meshing portion is located on the circumferential outside of the abutting portion and is connected to the abutting portion, the second tooth group and the external spline are arranged on the meshing portion, and the abutting portion abuts against the elastic member.

8. The dog clutch assembly according to claim 1, characterized in that: The first separating member includes a connected functional portion and a connecting portion, wherein the functional portion is a circular ring structure, and the functional portion is sleeved on the circumferential outer side of the engine shaft, the first tooth group is arranged on the functional portion, and the connecting portion is located on the side of the functional portion away from the second separating member and is connected to the engine shaft.

9. The dog clutch assembly according to claim 1, characterized in that: The internal splines extend to the first outer shell surface.

10. A gearbox, characterized in that: include: The planetary gear comprises: a sun gear, a planetary gear, a planetary carrier and a ring gear, wherein the sun gear is drivingly connected to the generator, the planetary carrier is drivingly connected to the engine shaft, and the ring gear is drivingly connected to the drive motor shaft; The dog clutch assembly according to any one of claims 1 to 9, wherein the first clutch member of the dog clutch assembly is connected to the planet carrier.

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