A disengaging mechanism and a vehicle

Abstract

The present disclosure discloses a disengaging mechanism and a vehicle. The disengaging mechanism includes a power device, a first rotating body, a second rotating body, and a reset buffer device; the power device is configured to provide power for the first rotating body to move axially towards the second rotating body, so that the first rotating body and the second rotating body are connected and rotate together; the reset buffer device includes an elastic member, the elastic member includes a first buffer portion and a second buffer portion extending axially, and the first buffer portion and the second buffer portion provide a buffer force and a reset force when the elastic member abuts against the first rotating body; the axial length of the first buffer portion is greater than the axial length of the second buffer portion. The disengaging mechanism operates smoothly, has a small impact force, and greatly reduces noise.

Description

Technical Field

[0001] This application relates to, but is not limited to, automotive transmission technology, and particularly to a disengaging mechanism and a vehicle. Background Art

[0002] A pure electric four-wheel drive vehicle is provided with front and rear electric drive systems. However, it is not always necessary for both electric drive systems to operate during vehicle driving. Under normal circumstances, one electric drive can meet the requirements, and two electric drive systems are used only under conditions where high torque is required, such as starting, climbing, overtaking, etc. To improve efficiency, a disengaging mechanism is added to one of the electric drive systems to ensure that the other motor is disengaged when one motor is driving, reducing the mechanical resistance and drag resistance losses of the electric drive system.

[0003] The disengaging mechanism needs to quickly achieve the disengaging and engaging functions, and strong impact forces will be generated during the disengaging and engaging processes, resulting in noise, which reduces the user experience. Summary of the Invention

[0004] Embodiments of this application provide a disengaging mechanism and a vehicle, where the disengaging and engaging processes are stable, with small impact forces and significantly reduced noise.

[0005] Embodiments of this application provide a disengaging mechanism, which includes a power device, a first rotating body, a second rotating body, and a reset buffer device;

[0006] The power device is configured to provide power for the first rotating body to move axially towards the second rotating body, so that the first rotating body and the second rotating body are connected and rotate together;

[0007] The reset buffer device includes an elastic member, and the elastic member includes a first buffer portion and a second buffer portion extending axially. The first buffer portion and the second buffer portion provide a buffer force and a reset force when the elastic member abuts against the first rotating body;

[0008] The axial length of the first buffer portion is greater than the axial length of the second buffer portion.

[0009] Further, the disengaging mechanism further includes a central shaft, the first rotating body is slidably sleeved on the central shaft, and the elastic member is fixed on the central shaft.

[0010] Further, the first buffer portion and the second buffer portion are provided in multiple numbers in the circumferential direction of the elastic member.

[0011] Further, the first buffer portion and the second buffer portion are alternately arranged in the circumferential direction of the elastic member.

[0012] Further, the elastic member includes an annular main body, the first buffer portion, and the second buffer portion;

[0013] The first buffer portion and the second buffer portion are disposed on the inner ring of the annular body and extend radially inward along the annular body, and the first buffer portion and the second buffer portion extend toward the second rotating body along the axial direction of the annular body;

[0014] The first buffer portion is abutted and fixed on the central shaft, and the annular body is arranged to abut against the first rotating body.

[0015] Furthermore, the disengaging mechanism further includes a limiting member, an installation groove is formed on the central shaft, and the limiting member is installed in the installation groove;

[0016] The first buffer portion abuts against the limiting member, and the second buffer portion abuts against the limiting member after being squeezed.

[0017] Furthermore, the axial length of the first buffer portion is set such that when the first rotating body and the second rotating body are separated, the first buffer portion abuts against the first rotating body; and / or, the axial length of the second buffer portion is set such that when the first rotating body and the second rotating body are separated, there is a gap between the second buffer portion and the first rotating body, and when the first rotating body and the second rotating body are connected, the second buffer portion abuts against the first rotating body.

[0018] Furthermore, the elastic member includes an annular body, the first buffer portion and the second buffer portion;

[0019] The first buffer portion and the second buffer portion are disposed on the outer ring of the annular body and extend radially outward along the annular body, and the first buffer portion and the second buffer portion extend toward the first rotating body along the axial direction of the annular body;

[0020] The annular body is abutted and fixed on the central shaft, and the first buffer portion and the second buffer portion are arranged to abut against the first rotating body.

[0021] Furthermore, the power device includes an electromagnetic component, a magnetic slider and a piston;

[0022] The electromagnetic component is configured to drive the magnetic slider to move axially through a magnetic field, and the piston is fixed to the magnetic slider and moves axially with the magnetic slider to push the first rotating body to move axially toward the second rotating body.

[0023] Furthermore, a first engaging tooth is provided on the end surface of the first rotating body facing the second rotating body, and a second engaging tooth is provided on the end surface of the second rotating body facing the first rotating body;

[0024] The first engaging tooth engages with the second engaging tooth so that the first rotating body and the second rotating body are connected and rotate together.

[0025] An embodiment of the present application further provides a vehicle, which includes the aforementioned disengaging mechanism.

[0026] Compared with some technologies, the present application has the following beneficial effects:

[0027] In the disengaging mechanism provided by the embodiment of the present application, the first buffer portion and the second buffer portion of the elastic member successively buffer the first rotating body, which not only ensures that the first rotating body can be combined with the second rotating body relatively quickly without causing excessive resistance to the combination process, but also ensures that there will be no large impact force between the first rotating body and the second rotating body. The disengaging mechanism provided by the embodiment of the present application has a relatively simple structure. The above effects can be achieved only by making structural improvements to the elastic member, without the need to additionally provide a complex shock absorption device, thus ensuring the working reliability of the disengaging mechanism.

[0028] The vehicle provided by the embodiment of the present application has the aforementioned disengaging mechanism, and the vehicle can flexibly switch between two-wheel drive and four-wheel drive, which not only improves the power performance of the vehicle but also ensures the economy of the vehicle. When the disengaging mechanism disengages or combines, the switching is stable and the noise is small, improving the satisfaction of users.

[0029] Other features and advantages of the present application will be described in the subsequent specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solutions of the present application, and do not constitute a limitation to the technical solutions of the present application.

[0031] Figure 1 It is a schematic structural diagram of the disengaging mechanism provided by Embodiment 1 of the present invention;

[0032] Figure 2 For Figure 1 An enlarged view of the structure at the reset buffer device in

[0033] Figure 3 It is a schematic structural diagram of the reset buffer device provided by Embodiment 1 of the present invention Figure 1 (front view);

[0034] Figure 4 It is a schematic structural diagram of the reset buffer device provided by Embodiment 1 of the present invention Figure 2 (side view);

[0035] Figure 5 It is a schematic structural diagram (front view) of another reset buffer device provided by Embodiment 2 of the present invention.

[0036] Illustration:

[0037] 1 - First rotating body, 11 - First engaging tooth, 2 - Second rotating body, 21 - Second engaging tooth, 3 - Power device, 31 - Coil assembly, 32 - Static armature, 33 - Moving armature, 34 - Piston, 4 - Reset buffer device, 41 - First buffer part, 42 - Second buffer part, 43 - Ring-shaped main body, 5 - Central axis, 51 - Limiting part, 61 - Spacer, 62 - Magnetic isolation sleeve. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the present application clearer and more understandable, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily.

[0039] The disengaging mechanism needs to quickly achieve the disengaging and engaging functions. Generally, the power device in the disengaging mechanism is electromagnetic. Due to the non-linear characteristics of the magnetic attraction force, obvious impact force will be generated at the moment of engagement, resulting in obvious knocking noise, which is likely to cause complaints from users and reduce the user's satisfaction. The existing reset device (such as: disc spring) in the disengaging mechanism cannot meet the buffering requirements of the above noise. Ordinary disc springs cannot effectively reduce the above noise, and the noise phenomenon is still serious.

[0040] In addition, the structure of the disengaging mechanism itself is relatively compact and is directly assembled on the housing, making it difficult to perform sound insulation and vibration isolation treatments, resulting in difficulty in solving the above noise problem.

[0041] Embodiment 1

[0042] The embodiment of the present application provides a disengaging mechanism, such as Figures 1 to 4As shown in the figure, the disengaging mechanism includes a power device 3, a first rotating body 1, a second rotating body 2, and a reset buffer device 4; the power device 3 is configured to provide power for the first rotating body 1 to move axially towards the second rotating body 2, so that the first rotating body 1 and the second rotating body 2 are connected and rotate together; the reset buffer device 4 includes an elastic member, and the elastic member includes a first buffer portion 41 and a second buffer portion 42 extending axially. The first buffer portion 41 and the second buffer portion 42 provide a buffer force and a reset force when the elastic member abuts against the first rotating body 1; the axial length of the first buffer portion 41 is greater than the axial length of the second buffer portion 42. The reset buffer device 4 can be a disc spring with an improved structure. The reset buffer device 4 can also be a nested spring composed of two spring portions with different or the same stiffness. One ends of the two springs are aligned and connected together, and the other ends are misaligned; the following implementation manners are included: the axial length of the spring with a smaller stiffness is greater than the axial length of the spring with a larger stiffness, the spring with a smaller stiffness is the first buffer portion, and the spring with a larger stiffness is the second buffer portion; or the two springs have the same stiffness, and the axial length of the spring with a smaller diameter is greater than the axial length of the spring with a larger diameter, the spring with a smaller diameter is the first buffer portion, and the spring with a larger diameter is the second buffer portion; or the two springs have the same stiffness, and the axial length of the spring with a larger diameter is greater than the axial length of the spring with a smaller diameter, the spring with a larger diameter is the first buffer portion, and the spring with a smaller diameter is the second buffer portion.

[0043] When two electric drive systems are required for the vehicle, the disengaging mechanism disengages, and the first rotating body 1 and the second rotating body 2 are separated. When two electric drive systems are required for the vehicle, the disengaging mechanism combines, and the first rotating body 1 and the second rotating body 2 are connected and rotate together.

[0044] The power device 3 provides a driving force to push the first rotating body 1 to move axially towards the second rotating body 2, so that the first rotating body 1 and the second rotating body 2 are connected. During the combination process of the first rotating body 1 and the second rotating body 2, the reset buffer device 4 plays a certain buffering role to avoid... The driving force of the power device 3 is removed, and the reset buffer device 4 provides a reset thrust to separate the first rotating body 1 from the second rotating body 2, and the disengaging mechanism disengages.

[0045] The elastic member includes a first buffer portion 41 and a second buffer portion 42 arranged axially, and the axial length of the first buffer portion 41 is greater than the axial length of the second buffer portion 42. On the basis of satisfying the aforementioned axial length relationship, the specific values of the axial lengths of the first buffer portion 41 and the second buffer portion 42 can be adjusted according to the actual situation to adapt to the disengaging mechanism under different working conditions and scenarios.

[0046] During the combination process of the first rotating body 1 and the second rotating body 2:

[0047] The first buffer portion 41 first functions as a buffer. That is, when the first rotating body 1 and the second rotating body 2 are not yet connected, only the first buffer portion 41 functions as a buffer, and the second buffer portion 42 does not yet function (the second buffer portion 42 remains in a free state and is not abutted and compressed). During the process from the first rotating body 1 and the second rotating body 2 starting to contact to being completely combined, the first buffer portion 41 and the second buffer portion 42 jointly function as a buffer. At this time, the first rotating body 1 and the second rotating body 2 start to contact, and they can rotate synchronously but are not yet completely combined. At this time, the second buffer portion 42 also starts to function as a buffer. In other words, during this process, the first rotating body 1 is jointly hindered and buffered by the first buffer portion 41 and the second buffer portion 42, effectively reducing the speed of the first rotating body 1, and further reducing the impact force generated when the first rotating body 1 and the second rotating body 2 are completely combined, and reducing the noise generated during combination.

[0048] During the process of the first rotating body 1 and the second rotating body 2 separating:

[0049] When the first rotating body 1 and the second rotating body 2 are in the process from being completely combined to not yet being completely separated, the first buffer portion 41 and the second buffer portion 42 jointly provide a restoring force to quickly separate the first rotating body 1 from the second rotating body 2. During the process when the first rotating body 1 and the second rotating body 2 have been completely separated and the first rotating body 1 continues to move away from the second rotating body 2, only the first buffer portion 41 provides a restoring force, and the restoring force provided by the first buffer portion 41 significantly decreases, avoiding a large impact force generated after the first rotating body 1 is reset and avoiding causing a large noise.

[0050] In an exemplary embodiment, as Figure 1 and Figure 2 shown, the disengaging mechanism further includes a central shaft 5. The first rotating body 1 is slidably sleeved on the central shaft 5, and the elastic member is fixed on the central shaft 5.

[0051] The first rotating body 1 is sleeved on the central shaft 5 and axially slides along the central shaft 5 to approach or move away from the second rotating body 2. The elastic member is fixed on the central shaft 5 and abuts against the first rotating body 1 to buffer and reset the first rotating body 1.

[0052] In an exemplary embodiment, as Figure 3 shown, the first buffer portion 41 and the second buffer portion 42 are provided in a plurality in the circumferential direction of the elastic member.

[0053] The first buffer portion 41 and the second buffer portion 42 are uniformly arranged in the circumferential direction and are both in a plurality, ensuring that the first rotating body 1 is uniformly stressed, sliding smoothly and smoothly, and avoiding jamming during the moving process.

[0054] In an exemplary embodiment, as Figure 3As shown, the first buffer portion 41 and the second buffer portion 42 are alternately arranged in the circumferential direction of the elastic member.

[0055] The first buffer portion 41 and the second buffer portion 42 are alternately arranged in the circumferential direction. In other words, one second buffer portion 42 is arranged between two adjacent first buffer portions 41, and one first buffer portion 41 is arranged between two adjacent second buffer portions 42. The alternate arrangement of the first buffer portion 41 and the second buffer portion 42 prevents the first rotating body 1 from skewing when the force acting on it changes.

[0056] In an exemplary embodiment, as Figure 3 and Figure 4 shown, the elastic member includes an annular main body 43, a first buffer portion 41, and a second buffer portion 42; the first buffer portion 41 and the second buffer portion 42 are arranged on the inner ring of the annular main body 43 and extend radially inward along the annular main body 43, and the first buffer portion 41 and the second buffer portion 42 extend axially toward the second rotating body 2 along the annular main body 43; the first buffer portion 41 is fixedly abutted on the central shaft 5, and the annular main body 43 is arranged to abut against the first rotating body 1.

[0057] The annular main body 43 is sleeved on the central shaft 5, enabling the elastic member to move axially along the central shaft 5. The first buffer portion 41 and the second buffer portion 42 can be in the form of claw pieces extending radially inward. The first buffer portion 41 and the second buffer portion 42 not only extend axially toward the second rotating body 2 but also extend radially inward. In other words, the first buffer portion 41 and the second buffer portion 42 are inclined.

[0058] The annular main body 43 axially abuts against the first rotating body 1, and the first buffer portion 41 is axially fixedly abutted on the central shaft 5. As the first rotating body 1 moves toward the second rotating body 2, the second buffer portion 42 also abuts and is fixed on the central shaft 5. The first rotating body 1 abuts against the annular main body 43, and the force on the first rotating body 1 is uniform and the sliding is smooth.

[0059] In an exemplary embodiment, as Figure 2 shown, the disengaging mechanism further includes a limiting member 51. An installation groove is formed on the central shaft 5, and the limiting member 51 is installed in the installation groove; the first buffer portion 41 abuts at the limiting member 51, and the second buffer portion 42 abuts at the limiting member 51 after being squeezed.

[0060] The limiting member 51 is installed on the central shaft 5, and the first buffer portion 41 and the second buffer portion 42 are fixedly abutted against the limiting member 51, so that the elastic member is fixedly abutted on the central shaft 5.

[0061] The limiting member 51 can be an annular snap ring.

[0062] In an exemplary embodiment, the axial length of the first buffer portion 41 is set such that when the first rotating body 1 and the second rotating body 2 are separated, the first buffer portion 41 abuts against the first rotating body 1; and / or, the axial length of the second buffer portion 42 is set such that when the first rotating body 1 and the second rotating body 2 are separated, there is a gap between the second buffer portion 42 and the first rotating body 1, and when the first rotating body 1 and the second rotating body 2 are connected, the second buffer portion 42 abuts against the first rotating body 1.

[0063] The axial length of the first buffer portion 41 is greater than the axial length of the second buffer portion 42.

[0064] When the first rotating body 1 and the second rotating body 2 have not yet come into contact and there is still a certain distance between them, the first buffer portion 41 abuts against the first rotating body 1 to provide a buffering force or a restoring force, and at this time, the second buffer portion 42 has not yet come into contact with the first rotating body 1.

[0065] In practical applications, when the first rotating body 1 is fully reset, that is, when the first rotating body 1 and the second rotating body 2 are farthest apart, the elastic member still abuts against the first rotating body 1 to ensure that the first rotating body 1 does not shake axially in the reset state. The pre-compression amount threshold of the elastic member is between 1 - 3 mm, and at this time, the elastic force of the elastic member is about 40 N.

[0066] The connection between the first rotating body 1 and the second rotating body 2 includes two states: just starting to contact (or not yet fully separated) and being fully combined.

[0067] When the first rotating body 1 and the second rotating body 2 start to contact (or not yet fully separated), the second buffer portion 42 starts to contact the first rotating body 1, and the second buffer portion 42 provides a buffering force or a restoring force.

[0068] The first buffer portion 41 alone provides a relatively small buffering force and restoring force; when the second buffer portion 42 comes into play, the first buffer portion 41 and the second buffer portion 42 jointly provide a relatively large buffering force and restoring force.

[0069] In an exemplary embodiment, the power device 3 includes an electromagnetic assembly, a magnetic slider, and a piston 34; the electromagnetic assembly is configured to drive the magnetic slider to move axially through a magnetic field, and the piston 34 is fixed to the magnetic slider and moves axially with the magnetic slider to push the first rotating body 1 to move axially towards the second rotating body 2.

[0070] As Figure 2As shown in the figure, the electromagnetic assembly includes a static armature 32 and a coil assembly 31. The magnetic slider can be a moving armature 33. After the coil assembly 31 is energized, the static armature 32 generates a magnetic field, which generates a magnetic attraction force with the moving armature 33. The magnetic attraction force causes the moving armature 33 and the piston 34 to axially move to the right and fit with the static armature 32. At the same time, it pushes the first rotating body 1 to axially move to the right and squeezes the elastic member until the first rotating body 1 and the second rotating body 2 are completely combined.

[0071] A gasket 61 is also sleeved on the first rotating body 1. The piston 34 abuts against the first rotating body 1 through the gasket 61 to prevent the piston 34 from being excessively worn and adhered, which may affect separation.

[0072] In specific operations, when the disengagement mechanism receives a combination instruction, the coil assembly 31 is energized, and the piston 34 is subjected to a magnetic attraction force and starts to compress the reset buffer device 4. During the compression process, the reset buffer device 4 generates a non-linear disc spring force (elastic force). As the distance between the moving armature 33 and the static armature 32 becomes smaller and smaller, the magnetic attraction force becomes larger and larger, and at the same time, the disc spring force also becomes larger and larger to offset the excess magnetic attraction force during the combination process. During the combination process, the first buffer portion 41 and the second buffer portion 42 of the reset buffer device 4 are sequentially compressed. When the second buffer portion 42 starts to be compressed, the generated disc spring force will increase sharply to quickly reduce the speed of the first rotating body 1 and avoid a violent impact between the first rotating body 1 and the second rotating body 2. And since this stage is already in the combination process and the first rotating body 1 and the second rotating body 2 can already rotate synchronously, therefore, the second buffer portion 42 will not affect the combination speed and efficiency of the disengagement mechanism.

[0073] Actual tests have shown that the reset buffer device 4 provided with the second buffer portion 42 can reduce the impact force when the first rotating body 1 and the second rotating body 2 are combined by more than 45%, and the noise reduction effect is obvious.

[0074] When the disengagement mechanism receives a disengagement instruction, the first rotating body 1 needs to quickly disengage and separate from the second rotating body 2. At this time, the coil assembly 31 is powered off and the magnetic attraction force disappears. Only the rebound force of the reset buffer device 4 remains in the disengagement mechanism. Since the reset buffer device 4 has the first buffer portion 41 and the second buffer portion 42, the disc spring force at this time is relatively large, which can help the first rotating body 1 and the second rotating body 2 quickly disengage to reach the state required by the vehicle. At the same time, as the second buffer portion 42 rebounds to the free state, the rebound force of the reset buffer device 4 rapidly becomes smaller. After the disengagement is completed, the rebound force becomes smaller to the pre-compressed state (reset state), and the second buffer portion 42 will not generate an excessive reverse impact force during the disengagement process. The reset buffer device 4 in the embodiment of the present application is more reliable, stable and effective in function compared with the traditional single-stage disc spring.

[0075] An annular magnetic isolation sleeve 62 can be arranged on the inner ring of the piston 34 to prevent the magnetic suction force generated by the electromagnetic assembly from affecting other components.

[0076] In an exemplary embodiment, as Figure 2 shown, a first engaging tooth 11 is provided on the end face of the first rotating body 1 facing the second rotating body 2, and a second engaging tooth 21 is provided on the end face of the second rotating body 2 facing the first rotating body 1; the first engaging tooth 11 meshes with the second engaging tooth 21 so that the first rotating body 1 and the second rotating body 2 are connected and rotate together.

[0077] The connection between the first rotating body 1 and the second rotating body 2 includes two states: just starting to contact (or not completely separated) and completely combined, that is, it includes two states of "the first engaging tooth 11 and the second engaging tooth 21 start to contact (the first engaging tooth 11 and the second engaging tooth 21 are not completely separated)" and "the first engaging tooth 11 and the second engaging tooth 21 are completely meshed".

[0078] When the first engaging tooth 11 is connected (meshed) with the second engaging tooth 21, the first rotating body 1 and the second rotating body 2 are connected and rotate together.

[0079] The disengagement mechanism provided by the embodiment of the present application has a small modification amount to the original structure, can well meet the narrow space layout requirements of the disengagement mechanism, and utilizes the non-linear stiffness characteristics of the spring / elastic member, which can not only meet the response speed of the disengagement mechanism, but also reduce the knocking sound of the disengagement mechanism.

[0080] The embodiment of the present application also provides a vehicle, and the vehicle includes the aforementioned disengagement mechanism.

[0081] The vehicle provided by the embodiment of the present application has the aforementioned disengagement mechanism. The vehicle can flexibly switch between two-wheel drive and four-wheel drive, which not only improves the power performance of the vehicle, but also ensures the economy of the vehicle. When the disengagement mechanism disengages or combines, the switching is stable and the noise is small, improving the satisfaction of users.

[0082] Embodiment Two

[0083] The disengagement mechanism provided by the embodiment of the present application has the same main structure as that in Embodiment One, and the differences between the two are mainly described here. The main difference between the disengagement mechanism provided by the embodiment of the present application and Embodiment One lies in: the structure of the elastic member.

[0084] In an exemplary embodiment, as Figure 5As shown, the elastic member includes an annular main body 43, a first buffer portion 41 and a second buffer portion 42; the first buffer portion 41 and the second buffer portion 42 are arranged on the outer ring of the annular main body 43 and extend radially outward along the annular main body 43, and the first buffer portion 41 and the second buffer portion 42 extend toward the first rotating body 1 along the axial direction of the annular main body 43; the annular main body 43 is abutted and fixed on the central shaft 5, and the first buffer portion 41 and the second buffer portion 42 are arranged to abut against the first rotating body 1.

[0085] The annular main body 43 is sleeved on the central shaft 5 to enable the elastic member to move axially along the central shaft 5. The first buffer portion 41 and the second buffer portion 42 can be in the form of claw pieces extending radially outward. The first buffer portion 41 and the second buffer portion 42 not only extend axially toward the second rotating body 2 but also extend radially inward. In other words, the first buffer portion 41 and the second buffer portion 42 are inclined.

[0086] The first buffer portion 41 abuts against the first rotating body 1 axially, and the annular main body 43 abuts and is fixed on the central shaft 5 axially. As the first rotating body 1 moves toward the second rotating body 2, the second buffer portion 42 also abuts against the first rotating body 1. The annular main body 43 is abutted and fixed to the central shaft 5, and the elastic member is fixed reliably.

[0087] In the description of the present application, it should be noted that the orientation or positional relationship indicated by "upper", "lower", "one end", "one side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0088] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "assembly", "installation" should be understood in a broad sense. For example, the term "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0089] The embodiments described in the present application are exemplary rather than restrictive, and it is obvious to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope of the embodiments described in the present application. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically restricted, any feature or element of any embodiment can be combined with any other feature or element in any other embodiment, or can replace any other feature or element in any other embodiment.

[0090] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form unique technical solutions defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other technical solutions to form another unique technical solution defined by the claims. Accordingly, it should be understood that any feature shown and / or discussed in this application may be implemented alone or in any suitable combination. Therefore, the embodiments are not subject to other limitations except those made in accordance with the appended claims and their equivalents. In addition, various modifications and changes may be made within the scope of the appended claims.

Claims

1. A disengaging mechanism, characterized in that, It includes a power device, a first rotating body, a second rotating body and a reset buffer device; The power device is configured to provide power for the first rotating body to move axially towards the second rotating body, so that the first rotating body and the second rotating body are connected and rotate together; The reset buffer device includes an elastic member, and the elastic member includes a first buffer portion and a second buffer portion extending axially. The first buffer portion and the second buffer portion provide a buffer force and a reset force when the elastic member abuts against the first rotating body; The axial length of the first buffer portion is greater than the axial length of the second buffer portion; The axial length of the first buffer portion is set such that when the first rotating body and the second rotating body are separated, the first buffer portion abuts against the first rotating body; The axial length of the second buffer portion is set such that when the first rotating body and the second rotating body are separated, there is a gap between the second buffer portion and the first rotating body, and when the first rotating body and the second rotating body are connected, the second buffer portion abuts against the first rotating body.

2. The disengaging mechanism according to claim 1, characterized in that, It further includes a central shaft. The first rotating body is slidably sleeved on the central shaft, and the elastic member is fixed on the central shaft.

3. The disengaging mechanism according to claim 2, characterized in that, The first buffer portion and the second buffer portion are arranged in a plurality in the circumferential direction of the elastic member.

4. The disengaging mechanism according to claim 3, characterized in that, The first buffer portion and the second buffer portion are alternately arranged in the circumferential direction of the elastic member.

5. The disengaging mechanism according to claim 2, characterized in that, The elastic member includes an annular main body, the first buffer portion and the second buffer portion; The first buffer portion and the second buffer portion are arranged on the inner ring of the annular main body and extend radially inward along the annular main body, and the first buffer portion and the second buffer portion extend axially along the annular main body towards the second rotating body; The first buffer portion abuts and is fixed on the central shaft, and the annular main body is arranged to abut against the first rotating body.

6. The disengaging mechanism according to claim 5, characterized in that, It further includes a limiting member. An installation groove is formed on the central shaft, and the limiting member is installed in the installation groove; The first buffer portion abuts at the limiting member, and the second buffer portion abuts at the limiting member after being squeezed.

7. The disengaging mechanism according to claim 2, characterized in that, The elastic member includes an annular main body, the first buffer portion and the second buffer portion; The first buffer portion and the second buffer portion are arranged on the outer ring of the annular main body and extend radially outward along the annular main body, and the first buffer portion and the second buffer portion extend axially along the annular main body towards the first rotating body; The annular main body abuts and is fixed on the central shaft, and the first buffer portion and the second buffer portion are arranged to abut against the first rotating body.

8. The disengaging mechanism according to any one of claims 1 to 7, characterized in that, The power device includes an electromagnetic component, a magnetic slider and a piston; The electromagnetic component is configured to drive the magnetic slider to move axially through a magnetic field. The piston is fixed to the magnetic slider and axially moves with the magnetic slider to push the first rotating body to move axially towards the second rotating body.

9. The disengaging mechanism according to any one of claims 1 to 7, characterized in that, On the end face of the first rotating body facing the second rotating body, there are first engaging teeth, and on the end face of the second rotating body facing the first rotating body, there are second engaging teeth; The first engaging tooth engages with the second engaging tooth so that the first rotating body and the second rotating body are connected and rotate together.

10. A vehicle, characterized in that, Comprising a disengaging mechanism according to any one of claims 1 to 9.

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