Disconnection module, power transmission system of vehicle and vehicle

Abstract

The invention relates to a disconnect module (10) for engaging or disengaging a first component (20) rotatable about a first shaft (30) with or from the first shaft, comprising: a clutch (2) rotationally fixedly mounted on the first shaft; the driving piece (1) is arranged between the first component and the clutch piece in the axial direction and fixedly connected to the first component, and the clutch piece can reciprocate in the axial direction so as to be connected with and disengaged from the driving piece; the reset assembly is used for applying pressure to the separation direction of the clutch part in which the clutch part is separated from the driving part; the actuator comprises an acting end capable of reciprocating in the axial direction; and the pressing assembly is constructed to connect the acting end with the clutch piece, so that under the pressure of the reset assembly, one-time reciprocating motion of the acting end brings the clutch piece into the joint state from the disengagement state and keeps the joint state until the next-time reciprocating motion of the acting end brings the clutch piece into the disengagement state from the joint state. The invention also relates to a powertrain of a vehicle, comprising such a disconnect module, and also to a vehicle comprising such a powertrain.

Description

Technical Field

[0001] The invention relates to a disconnect module for engaging or disengaging a first component rotatable about a first shaft with the first shaft. The invention also relates to a power transmission system of a vehicle, comprising the disconnect module. The invention further relates to a vehicle, comprising the power transmission system. Background Art

[0002] The trend towards designing and manufacturing fuel-efficient, low-emission vehicles has increased significantly, a trend that is inevitable due to environmental concerns and the increase in fuel costs. At the forefront of this trend is the development of electric vehicles, such as pure electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, extended-range electric vehicles, fuel cell vehicles, etc.

[0003] Four-wheel drive electric vehicles are equipped with motors at the front and rear, which are usually divided into main drive motors and auxiliary drive motors. In some cases, the auxiliary drive motor can be in a non-working state. For example, the auxiliary drive motor is used only during acceleration or special working conditions, or when the driver needs to obtain some high-performance modes. However, when the auxiliary drive motor stops running, the wheels will still drive the auxiliary drive differential to operate, and the differential will drive all the transmission mechanisms and motors connected to it to rotate together, thereby generating drag losses. In order to improve efficiency, a disconnect module is added to the powertrain system of electric vehicles to reduce drag losses.

[0004] Conventional disconnect modules usually adopt a monostable mode, that is, in order to achieve the auxiliary drive motor in the working state, the actuator of the disconnect module needs to remain powered to keep the disconnect module in the engaged state. Therefore, the engaged state is an unstable state. Once the actuator is powered off, the disconnect module cannot maintain the engaged state. This means that the electric vehicle must continue to power the actuator while the auxiliary drive motor is in the working state. This energy consumption is a waste. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects or shortcomings of the above-mentioned prior art and provide a disconnect module that can provide two stable states, namely a stable engaged state and a stable disengaged state, without consuming additional energy to maintain any state.

[0006] According to one aspect of the present invention, a disconnection module is provided for engaging or disengaging a first component rotatable about a first axis with the first axis, wherein the disconnection module comprises:

[0007] a clutch member, rotatably fixedly mounted on the first shaft;

[0008] a driving member, axially arranged between the first component and the clutch member, and fixedly connected to the first component, wherein the clutch member can reciprocate axially to engage and disengage with the driving member, in an engaged state, the first shaft rotates together with the first component, and in a disengaged state, the first shaft rotates independently of the first component,

[0009] The reset assembly is used to apply pressure to the clutch member in a disengagement direction from the driving member.

[0010] The actuator comprises an acting end capable of axial reciprocating motion,

[0011] The pressing assembly is constructed to connect the action end with the clutch member, so that under the pressure of the reset assembly, one reciprocating movement of the action end can bring the clutch member from a disengaged state to an engaged state and maintain the engaged state until the next reciprocating movement of the action end brings the clutch member from the engaged state to a disengaged state.

[0012] The present invention separates a traditional clutch into two components, namely a driving member and a clutch member, wherein the driving member is fixedly connected to the first component, a reset assembly is arranged on the side of the clutch member facing the driving member, and an actuator is arranged on the side of the clutch member away from the driving member, and the reset assembly and the actuator cooperate on both sides of the clutch member to provide the clutch member with a force to approach or move away from the driving member, and at the same time, a pressing assembly is arranged between the clutch member and the actuator, so that the clutch member can be in a stable engaged state and a stable disengaged state, that is, it is not necessary to continuously energize the actuator to maintain any of the two states, thereby greatly reducing energy consumption and realizing a bistable disconnection module.

[0013] In an exemplary embodiment, the pressing assembly includes:

[0014] A pressure plate is axially abutted against the clutch member and is provided with N first protrusions,

[0015] The driven plate is used to receive the force from the action end and is provided with 2N second protrusions,

[0016] The guide member has a first supporting section for radially supporting the driven plate, wherein 2N slide grooves extending in the axial direction are arranged in the first supporting section, wherein the slide grooves are arranged to guide the second protrusion to slide in the axial direction, and include a first slide groove and a second slide groove having a radial depth smaller than that of the first slide groove, wherein the first slide grooves are alternately arranged with the second slide grooves in the circumferential direction,

[0017] Wherein, in a disengaged state, the first protrusion can enter the first sliding groove to slide in the axial direction, and in an engaged state, the first protrusion can be stopped on the outer side of the second sliding groove.

[0018] In an exemplary embodiment, the first protrusions respectively have first inclined surfaces inclined in the same direction relative to the radial plane, and the second protrusions respectively have abutment ends for abutting against the first inclined surfaces, wherein, in each reciprocating movement of the acting end, when the first protrusion is pushed to the outside of the slide groove by the second protrusion, the first protrusion can drive the pressure plate to rotate a certain angle relative to the driven plate each time under the action force of the acting end and the pressure of the reset assembly, wherein the guide member is also provided with an end inclined surface cooperating with the first inclined surface of the pressure plate, so that the first protrusion of the pressure plate can move toward the disengagement direction at each rotation, thereby alternately entering the first slide groove and being stopped on the outside of the second slide groove.

[0019] In an exemplary embodiment, the guide member is provided with a barrier portion between the first slide groove and the second slide groove, and the end slope includes a second slope assigned to the barrier portion and a third slope assigned to the second slide groove, wherein the third slope is adjacent to the second slope and transitions smoothly.

[0020] In an exemplary embodiment, the barrier portion includes a first barrier portion located upstream of the second slide slot along the rotation direction of the pressure plate and a second barrier portion located downstream of the second slide slot, and the second barrier portion protrudes axially from a third inclined surface of the second slide slot.

[0021] In an exemplary embodiment, the driven plate and / or the pressure plate are provided with a snap mechanism for preventing the driven plate from being separated from the pressure plate in the axial direction.

[0022] In an exemplary embodiment, the snap mechanism includes a plurality of snap claws protruding from one of the driven plate and the pressure plate and capable of snapping onto an edge of the other of the driven plate and the pressure plate.

[0023] In an exemplary embodiment, an oblique groove extending obliquely to the axial direction is provided on the edge for installing the claw and preventing the claw from being disengaged in the axial direction.

[0024] In an exemplary embodiment, the guide member is sleeved on the first shaft, and the driven plate and the pressure plate are respectively sleeved on the guide member.

[0025] In an exemplary embodiment, the barrier portion is a protrusion.

[0026] In an exemplary embodiment, the guide element further comprises a second bearing section for supporting the clutch element in a rotationally fixed manner, the second bearing section being spaced apart from the first bearing section in the axial direction.

[0027] In an exemplary embodiment, the guide member further has a third bearing section adjacent to the second bearing section, and the disconnection module includes a clamping ring provided on the third bearing section, which is arranged on a side of the drive member close to the first component and has an axial gap with the drive member.

[0028] In an exemplary embodiment, the reset assembly comprises:

[0029] A spring acting in the axial direction;

[0030] The end bearing is used to support the spring in the axial direction so that the spring can keep acting in the axial direction even when the clutch is in the disengaged state.

[0031] In an exemplary embodiment, the reset assembly further comprises:

[0032] A first supporting washer, used for abutting against an end of the spring facing away from the clutch member;

[0033] A second supporting washer is used to abut against one end of the spring facing the clutch member,

[0034] The end bearing is axially supported between the second bearing washer and the clutch element or axially supported between the first bearing washer and the drive element or the first component.

[0035] In an exemplary embodiment, the second supporting washer is provided with a protrusion punched from one side, and the protrusion is used to support one end of the spring.

[0036] In an exemplary embodiment, the end bearing comprises a first support ring fixedly connected to the second support washer and a second support ring fixedly connected to the clutch element.

[0037] In an exemplary embodiment, the first component is an idler gear in a reducer, and the driving member is fixedly connected to an end surface of the idler gear.

[0038] According to another aspect of the present invention, a power transmission system for a vehicle is provided, comprising: a motor having a drive shaft; a reducer having at least one transmission shaft; and a disconnect module according to the above description, wherein the first shaft comprises the drive shaft or the at least one transmission shaft.

[0039] According to another aspect of the present invention, a vehicle is provided, comprising the power transmission system as described above.

[0040] These and other features, aspects and advantages of the present application will become better understood with reference to the following description.The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are incorporated in and constitute a part of the specification. The accompanying drawings, together with the general description above, the detailed description of the exemplary embodiments and methods given below, serve to explain the principles of the invention. Objects and advantages of the invention will become apparent when studying the following specification in light of the accompanying drawings, in which like elements are given the same or similar reference numerals, and in which:

[0042] Figure 1A An exemplary embodiment of a disconnect module according to the present invention is schematically shown;

[0043] Figure 1B Schematically shows Figure 1A A partial cross-sectional view of a disconnected module;

[0044] Figure 2 Schematically shows Figure 1A A three-dimensional diagram of the driving member and the clutch member in FIG.

[0045] Figure 3A Schematically shows Figure 1A A guide member of a pressing assembly in the embodiment of the present invention;

[0046] Figure 3B Schematically shows Figure 1A A pressing plate of a pressing assembly in the embodiment of the present invention;

[0047] Figure 3C Schematically shows Figure 1A A driven plate of a pressing assembly in the embodiment of the present invention;

[0048] Figure 3D Schematically shows Figure 3B The pressure plate and Figure 3C The assembly diagram of the driven plate in FIG.

[0049] Figure 4A Schematically shows Figure 1B An assembly diagram of the reset component in FIG.

[0050] Figure 4B Schematically shows Figure 3A End bearings in

[0051] Figure 5A The schematic diagram shows the positional relationship of the pressing assembly when the disconnect module according to the present invention is in a disengaged state;

[0052] Figure 5B The schematic diagram shows the positional relationship of the pressing assembly when the disconnect module according to the present invention switches from a disengaged state to an engaged state;

[0053] Figure 5CThe schematic diagram shows the positional relationship of the pressing assembly when the disconnect module according to the present invention is in an engaged state.

[0054] In the figure:

[0055] The first component 20 of the disconnect module 10 has an opening 21a on the end surface 21

[0056] First axis 30

[0057] Driving member 1 driving pin 1a first engaging portion 1b

[0058] Second engagement portion 2b of clutch member 2

[0059] Reset component 3

[0060] Spring 31 First support washer 32 Second support washer 33 Protrusion 33a

[0061] End bearing 34 cylindrical roller 34a first support ring 34b second support ring 34c pressing assembly 4

[0062] Pressing plate 41 First protrusion 41a Oblique groove 41b First inclined surface A1

[0063] The second protrusion 42a of the driven plate 42 and the claw 42b abut the end B

[0064] Guide member 43 first slide groove 43a second slide groove 43b first barrier portion 43c′

[0065] Second barrier portion 43c″ Second inclined surface A2 Third inclined surface A3

[0066] First support section 43d Second support section 43e Third support section 43f

[0067] Actuator 5 action end 5a collar 6 DETAILED DESCRIPTION

[0068] Reference will now be made in detail to exemplary embodiments and methods of the present invention as shown in the accompanying drawings, in which like reference numerals designate like or corresponding parts. It should be noted, however, that the invention in its broader aspects is not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described in connection with the exemplary embodiments and methods.

[0069] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, words such as "one", "the", "said" and the like do not necessarily indicate a quantity limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate the relative orientation relationship when the device is used or the orientation relationship shown in the drawings. When the absolute position of the described object changes, the relative position relationship may also change accordingly. Unless otherwise explicitly described, the terms "connected, connected" and the like refer to the relationship in which the structures are fixed or attached to each other directly or indirectly through an intermediate structure.

[0070] Reference is now made to the drawings, wherein like numerals refer to like elements throughout.

[0071] Figure 1A An exemplary embodiment of a disconnect module 10 according to the present invention is schematically shown; Figure 1B Schematically shows Figure 1A A partial sectional view of a disconnection module 10. Here, the disconnection module 10 is in an engaged state.

[0072] Combination Figure 1A and 1B The disconnection module 10 of the present invention can be generally understood, wherein the disconnection module 10 includes:

[0073] The clutch member 2 is rotatably fixedly mounted on the first shaft 30;

[0074] A driving member 1 is axially arranged between the first component 20 and the clutch member 2 and fixedly connected to the first component 20, wherein the clutch member 2 can reciprocate axially to engage and disengage with the driving member 1, and in an engaged state, the first shaft 30 rotates together with the first component 20, and in a disengaged state, the first shaft 30 is independent of the first component 20;

[0075] A reset assembly 3, used for applying pressure to the clutch member 2 in a disengagement direction from the driving member 1;

[0076] The actuator 5 comprises an action end 5a capable of axial reciprocating motion;

[0077] The pressing assembly 4 is constructed to connect the action end 5a with the clutch 2, so that under the pressure of the reset assembly 3, one reciprocating movement of the action end 5a can bring the clutch 2 from a disengaged state to an engaged state and maintain the engaged state until the next reciprocating movement of the action end 5a brings the clutch 2 from the engaged state to a disengaged state.

[0078] The present invention separates a traditional clutch into two components, namely a driving member 1 and a clutch member 2, wherein the driving member 1 is fixedly connected to a first component 20, a reset assembly 3 is arranged on a side of the clutch member 2 facing the driving member 1, and an actuator 5 is arranged on a side of the clutch member 2 away from the driving member 1, and the reset assembly 3 and the actuator 5 cooperate on both sides of the clutch member to provide the clutch member 2 with a force to approach or move away from the driving member 1, and at the same time, a pressing assembly 3 is arranged between the clutch member and the actuator 5, so that the clutch member can be in a stable engaged state and a stable disengaged state, that is, it is not necessary to continuously energize the actuator to maintain any of the two states, thereby greatly reducing energy consumption and realizing a bistable disconnection module.

[0079] It should be noted that the "rotationally fixed" described herein means that two components are connected so that they can rotate together, and their mutual movement in the rotation direction (e.g., circumferential direction) is restricted so that they can rotate together. "Rotationally fixed" does not restrict displacement along the rotation axis, so the two rotationally fixed components can have relative displacement along the rotation axis. If the displacement along the rotation axis is also fixed, then the two components can be considered to be completely fixedly connected.

[0080] It should be noted here that, in the disengaged state, the first shaft 30 is independent of the first component 20, which means that the movement state of the first shaft 30 at this time is independent of the movement state of the first component 20, that is, the first shaft 30 and the first component 20 can rotate independently of each other, but it does not mean that there is no connection relationship between them.

[0081] In this exemplary embodiment, the clutch member 2 and the first shaft 30 are rotationally fixed via a spline connection, while the drive member 1 and the first member 20 are fixedly connected.

[0082] Figure 2 Shows Figure 1AA three-dimensional diagram of the driving member 1 and the clutch member 2 in FIG. In order to illustrate the fixed connection method of the driving member 1, a first component 20 is also shown. The first component 20 is an idler gear in the reducer here, and has an end face 21 facing the driving member 1. The driving member 1 is provided with a plurality of transmission pins 1a uniformly distributed along the circumferential direction on the side facing the first component 20, and the end face of the first component 20 facing the driving member 1 is provided with a plurality of openings 21a uniformly distributed along the circumferential direction, and the transmission pins 1a can mesh with the openings 21a to fix the driving member 1 to the first component 20. Other connection methods can also be used within the scope of the present invention to achieve fixed connection between the driving member 1 and the clutch member 2.

[0083] from Figure 2 It can be seen that the driving member 1 has a first engaging portion 1b, and the clutch member 2 has a second engaging portion 2b, and the first engaging portion can mesh with the second engaging portion. In this exemplary embodiment, the first engaging portion 1b and the second engaging portion 2b are both configured as face teeth.

[0084] See again Figure 1B In this exemplary embodiment, the pressing assembly 4 includes a guide member 43, a pressure plate 41 and a driven plate 42, wherein the pressure plate 41 and the driven plate 42 are both annular and concentrically mounted on the guide member 43, and the guide member 43 is sleeved on the first shaft 30. The pressure plate 41 abuts against the clutch member 2 on the left side, and the driven plate 42 is used to receive the force from the action end 5a of the actuator 5 on the right side and transmit the force to the pressure plate 41.

[0085] Figures 3A-3C The schematic diagrams show Figure 1A The guide member 43, the pressing plate 41 and the driven plate 42 of the pressing assembly 4. Figure 3D The assembly diagram of the pressure plate 41 and the driven plate 42 is schematically shown.

[0086] from Figure 3A As can be seen from the left figure in , the guide member 43 has a first support section 43d for radially supporting the driven plate 42, a second support section 43e for rotationally fixedly supporting the clutch member 2, and a third support section 43f adjacent to the second support section 43e, wherein the second support section 43e is axially spaced from the first support section 43d, thereby allowing the pressure plate 41 to move axially and rotate. With this arrangement, the guide member 43 provides support for both the driven plate 42 and the clutch member 2, and simple assembly can be achieved by providing an integral guide member 43.

[0087] It should be noted that the guide member 43 may not include the second supporting section 43e and the third supporting section 43f, so that the support of the driven plate 42 is achieved by a separate component, which can also achieve the purpose of the present invention.

[0088] The third supporting section 43f may be provided with a collar 6 (such as Figure 1B As shown in FIG. 1 , the collar 6 is arranged on the side of the drive member 1 close to the first component 20 and has an axial gap with the drive member 1. This prevents the drive member 1 and the guide member 43 from being axially disengaged during delivery, so that the disconnection module can be provided as an integral component, and during the operation of the disconnection module 10, the collar 6 will not hinder the rotation of the drive member 1.

[0089] Figure 3A The partial area marked by the dotted frame in the left figure is shown enlarged in the right figure, and the enlarged figure shows that the first supporting section 43d is provided with a plurality of axially extending barrier portions 43c', 43c" and slide grooves 43a, 43b located between the barrier portions. The slide grooves include a first slide groove 43a and a second slide groove 43b with a smaller radial depth than the first slide groove, and the first slide grooves 43a are alternately arranged with the second slide grooves 43b along the circumferential direction. In the exemplary embodiment, the first slide groove 43a is set to have the same angular width as the second slide groove 43b, and can also be set to have a different angular width from the second slide groove 43b, both of which can achieve the purpose of the present invention.

[0090] The guide member 43 is also provided with an end inclined surface, including a second inclined surface A2 assigned to the barrier portion 43c', 43c" and a third inclined surface A3 assigned to the second slide groove 43b, wherein the third inclined surface A3 is adjacent to the second inclined surface A2 and has a smooth transition.

[0091] from Figure 3B It can be seen that the pressure plate 41 is provided with N (here N=9) first protrusions 41a on the radial inner side, the first protrusions 41a are evenly distributed along the circumferential direction, and each has a first inclined surface A1 inclined in the same direction relative to the radial plane, and the slope of the first inclined surface A1 is the same as the slope of the second inclined surface A2 of the barrier portion 43c', 43c". In addition, these first protrusions 41a have the same angular width as the slide grooves 43a, 43b. The portion marked with a dotted line frame in the left view is enlarged in the right view. The first inclined surface A1 is more clearly shown in the enlarged view.

[0092] from Figure 3C It can be seen that the driven plate 42 is provided with 2N second protrusions 42a on the radial inner side, and these second protrusions 42a are evenly distributed along the circumferential direction and have the same angular width as the slide grooves 43a and 43b. The second protrusions 42a are respectively provided with abutment ends B for abutting against the first inclined surface A1. The portion marked with a dotted line frame in the left view is enlarged in the right view. It can be seen in the enlarged view that the abutment end B is set to a pointed end, so as to form a line contact with the first inclined surface A1 to reduce the friction with the first inclined surface A1. However, the abutment end B can also be designed into other shapes, which can also achieve the purpose of the present invention.

[0093] Figure 3A The total number of the chutes 43a and 43b is 2N, which is equal to Figure 3C The number of the second protrusions 42a shown in FIG. 4 is the same. The slide grooves 43a, 43b are configured to guide the second protrusions 42a to slide axially. In the disengaged state, the first protrusion 41a can enter the first slide groove 43a to slide axially, and in the engaged state, the first protrusion 41a can be stopped on the outside of the second slide groove 43b.

[0094] In each reciprocating movement of the action end 5a, when the first protrusion 41a is pushed to the outside of the slide grooves 43a and 43 by the second protrusion 42a, the first protrusion 41a can drive the pressure plate 41 to rotate a certain angle relative to the driven plate 42 under the action force of the action end 5a and the pressure of the reset assembly 3. Depending on whether the angular widths of the first slide groove 43a and the second slide groove 43b are the same, the angles can be the same or different. When the angular widths of the first slide groove 43a and the second slide groove 43b are the same, the rotation angle of the pressure plate is the same in the two switching processes from the engaged state to the disengaged state and from the disengaged state to the engaged state, and each time it rotates 360 / 2N degrees. When the angular widths of the first slide groove 43a and the second slide groove 43b are different, the rotation angles of the pressure plate are different in the two switching processes.

[0095] Here, the end bevels A2 and A3 of the guide member 43 cooperate with the first bevel A1 of the pressure plate so that the first protrusion 41a of the pressure plate can move in the disengagement direction during each rotation, thereby alternately entering the first slide groove 43a and being stopped on the outside of the second slide groove 43b.

[0096] The barrier portions 43c' and 43c" of the guide member 43 include a first barrier portion 43c' located upstream of the second slide groove 43b along the rotation direction of the pressure plate 41 and a second barrier portion 43c", located downstream of the second slide groove 43b, wherein the second barrier portion 43c" protrudes axially from the third inclined surface A3 of the second slide groove 43b. As a result, the first protrusion of the pressure plate can be stopped on the outer side of the second slide groove 43b when rotating from the first barrier portion 43c' toward the second barrier portion 43c".

[0097] In this exemplary embodiment, the driven plate 42 is provided with a buckle mechanism to prevent the driven plate 42 from being axially separated from the pressure plate 41. In other exemplary embodiments, the buckle mechanism may also be provided on the pressure plate 41, and the purpose of the present invention may also be achieved.

[0098] from Figure 3CIt can be seen that the snap mechanism includes a plurality of claws 42b protruding from the driven plate 42 and capable of snapping onto the edge of the pressure plate 41. An oblique groove 41b extending obliquely to the axial direction is provided on the edge of the pressure plate 41 for installing the claws 42b and preventing the claws from disengaging along the axial direction.

[0099] from Figure 3D It can be seen that the first inclined surface A1 (see Figure 3B ) and the abutment end B of the second protrusion 42a of the driven plate 42 (see Figure 3C ) are abutted together. It can also be seen that the claw 42b is clamped on the edge of the pressure plate 41 to prevent the driven plate 42 from separating from the pressure plate 41 in the axial direction. The claw 42b can be rotated obliquely into the inclined groove 41b and clamped outside the inclined groove during installation. Due to the design of the inclined groove, the claw 42b can be prevented from being disengaged in the axial direction during use.

[0100] In another exemplary embodiment, as an alternative to the inclined groove 41b, a circumferential ridge may be provided on the edge of the pressure plate 41, so that the claw 42b can be installed on the circumferential ridge through radial elastic deformation, but is not easy to disengage axially after installation, which can also achieve the purpose of the present invention.

[0101] In this exemplary embodiment, for example, Figure 1B and Figures 3A-3D It can be seen that the guide member 43 is sleeved on the first shaft 30, the driven plate 42 and the pressure plate 41 are respectively sleeved on the guide member 43, and the barrier portions 43c' and 43c" are protrusions, to be more precise, protrusions protruding radially outward. Correspondingly, the first protrusion 41a of the pressure plate 41 and the second protrusion 42a of the driven plate 42 are both protrusions protruding radially inward.

[0102] In another exemplary embodiment, the guide member may also be sleeved on the driven plate. In this case, 2N slide grooves may be provided in the circumferential wall of the guide member, wherein the deeper first slide groove may pass through the circumferential wall of the guide member so as to be visible from the outside of the guide member, while the shallower second slide groove is not visible from the outside of the guide member. Accordingly, the first protrusion of the pressure plate and the second protrusion of the driven plate should both be protrusions protruding radially outward.

[0103] Figure 4A Schematically shows Figure 1B , in which the reset assembly 3 includes: a spring 31 acting in the axial direction; a first supporting washer 32 for abutting against the end of the spring facing away from the clutch 2; a second supporting washer 33 for abutting against the end of the spring facing the clutch 2; and an end bearing 34 for supporting the spring in the axial direction so that the spring can maintain the axial action even when the clutch is disengaged.

[0104] Here, the spring 31 is configured as a plurality of spiral springs. In other exemplary embodiments, for example, a disc spring may be used instead of a plurality of spiral springs, and the first support washer 32 and the second support washer 33 may be omitted.

[0105] exist Figure 4A In the embodiment, the end bearing 34 is axially supported between the second support washer 33 and the clutch member 2. The first support washer 32 is axially supported on the driving member 1.

[0106] In other exemplary embodiments, it is also conceivable that the first bearing disk 32 is axially supported on the first component 20. In other exemplary embodiments, the end bearing 34 can also be axially supported between the first bearing disk 32 and the drive element 1 or the first component 20.

[0107] from Figure 4A It can also be seen that the second support washer 33 is provided with a protrusion 33a punched from one side, which is used to support one end of the spring 31. The first support washer 32 also has the same design. In this way, the support of both ends of the spring 31 is achieved at low cost and effectively.

[0108] Figure 4B Schematically shows Figure 4A The end bearing 34 in the embodiment of the present invention. As can be seen from the left figure, the end bearing 34 includes a first support ring 34b fixedly connected to the second support pad 33 and a second support ring 34c fixedly connected to the clutch member 2. The first support ring 34b is removed in the right figure, showing a plurality of cylindrical rollers 34a distributed along the circumferential direction.

[0109] Figures 5A-5C The positional relationship of the pressing assembly 4 when the disconnection module 10 according to the present invention is in a disengaged state, when switching from the disengaged state to the engaged state, and in the engaged state is schematically shown. For clarity, only the positions of the first protrusion 41a of the pressing plate 41 and the second protrusion 42a of the driven plate 42 on the guide member 43 are shown. Here, the first protrusion 41a marked with a dotted line frame is used as an example to illustrate the working process of the pressing assembly 4.

[0110] exist Figure 5A In the disengaged state shown, the first protrusion 41a of the pressure plate 41 and the second protrusion 42a of the driven plate 42 are both inserted into the deeper first slide groove 43a (see the left figure). At this time, the actuator 5 is powered off, and the active end 5a (not visible here) is retracted, so it does not abut on the driven plate 42. The driven plate 42 is prevented from being separated from the pressure plate 41 by the claw 42b being snapped on the edge of the pressure plate 41 (see the right figure). At this time, the driving member 1 and the clutch member 2 are disengaged. Therefore, the disconnection module 10 is in a stable disengaged state without consuming additional energy.

[0111] When the disconnect module 10 needs to switch from the disengaged state to the engaged state, see Figure 5B , the actuator 5 is energized, and the action end 5a is pushed to the left, causing the second protrusion 42a of the driven plate 42 to push the first protrusion 41a of the pressure plate 41 to move to the left. When the second protrusion 42a pushes the first protrusion 41a out of the first slide groove 43a, the first protrusion 41a is no longer constrained by the first slide groove 43a, and the pressure plate 41 can rotate upward relative to the driven plate 42, and the first inclined surface A1 of the first protrusion 41a overlaps the inclined surface A2 of the first barrier portion 43c' above the first slide groove 43a. At this time, the first protrusion 41a rotates upward and slides to the right under the pressure of the reset assembly 3.

[0112] During this period, the actuator 5 is powered off and the active end 5a retracts to the right. Since the pressure plate 41 and the driven plate 42 are connected together by a snap mechanism, the rightward sliding of the first protrusion 41a is transmitted to the second protrusion 42a. The first protrusion 41a slides through the inclined surface A2 of the first barrier portion 43c' and continues to slide onto the third inclined surface A3 assigned to the second slide groove 43b. Figure 5C As shown, since the second blocking portion 43c" downstream of the second slide groove 43b protrudes axially from the third inclined surface A3 of the second slide groove 43b, the first protrusion 41a is stopped on the outer side of the second slide groove 43b. At this time, the driving member 1 and the clutch member 2 are engaged. Therefore, the disconnection module 10 is in a stable engagement state without consuming additional energy.

[0113] Therefore, in one reciprocating motion of the active end 5a, the first protrusion 41a marked Figure 5A The first slide groove 43a (stable disengagement state) moves to Figure 5C The pressure plate 41 is rotated relative to the driven plate 42 by an angle of 360° / 2N.

[0114] Accordingly, in the next reciprocating movement of the active end 5a, the marked first protrusion 41a will move from Figure 5C The pressure plate 41 moves from the outer side of the second slide groove 43b (stable engagement state) to the first slide groove 43a downstream of the second blocking portion 43c" (i.e. above the plane of the figure) (stable disengagement state), and the pressure plate 41 also rotates 360° / 2N relative to the driven plate 42.

[0115] It can be seen that the disconnect module 10 of the present invention can provide two stable states without consuming additional energy to maintain the current state, thereby reducing energy consumption.

[0116] The power transmission system provided by the present invention comprises: a motor (not shown) having a drive shaft; a reducer (not shown) having at least one transmission shaft; a disconnect module 10, wherein the first shaft 30 shown comprises the drive shaft and the at least one transmission shaft. The first component 20 is a gear supported on the first shaft. The actuator 5 can be fixed on the housing of the reducer.

[0117] It should be understood that the power transmission system refers to a device that is driven by electricity. For example, the motor, as a driving mechanism, can convert input electrical energy into rotational mechanical energy, and the reducer is mechanically connected to the motor to adjust the torque and speed generated by the motor and further transmit it to the wheels of the vehicle.

[0118] At least one transmission shaft of the speed reducer may include a speed reducer input shaft and an intermediate shaft arranged in parallel to each other. The speed reducer input shaft may be provided with an input gear, which may be integrally formed on the speed reducer input shaft and coaxially arranged with the speed reducer input shaft. The intermediate shaft may be provided with an intermediate first gear and an intermediate second gear. The intermediate first gear is in driving engagement with the input gear. The intermediate second gear may be in driving engagement with a driven gear connected to the differential. Thus, a two-stage helical gear parallel shaft speed reducer arrangement is achieved from the speed reducer input shaft to the differential.

[0119] The operation mode of the disconnect module 10 of the present invention in the power transmission system is as follows: one reciprocating movement of the acting end 5a brings the disconnect module 10 into a stable engaged state. In the engaged state, the driving force / torque from the motor can be transmitted to the differential and the wheels connected thereto via the first shaft 30, until the next reciprocating movement of the acting end 5a switches the disconnect module 10 from the engaged state to a stable disengaged state. In the disengaged state, the driving force / torque transmission is disconnected, and even if the wheel still drives the auxiliary drive differential to operate, the rotation of the wheel drives as few transmission mechanisms as possible, thereby reducing drag losses.

[0120] The vehicle provided by the present invention includes a power transmission system as described above. The vehicle may be an electrified vehicle, such as a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or a range extended electric vehicle (REEV). The vehicle may also be a hydrogen energy vehicle. It should be understood that the vehicle of the present invention also has the advantages described above with respect to the disconnect module and the power transmission system.

[0121] Although exemplary embodiments have been described in the foregoing description, it should be noted that a large number of variants are possible. It should also be noted that the exemplary embodiments are merely examples and should not be considered as limiting the scope of protection, applicability and device configuration according to the exemplary embodiments in any way. Rather, the overview and description of the embodiments provide a person skilled in the art with guidance for implementing at least one exemplary embodiment, wherein various modifications can be made in terms of the function and layout of the components, as long as they do not deviate from the scope of protection determined by the claims and equivalent feature combinations.

Claims

1. A disconnect module (10) for engaging or disengaging a first component (20) rotatable about a first axis (30) with the first axis (30), wherein: The disconnection module (10) comprises: A clutch member (2) is rotationally fixedly mounted on the first shaft (30); A driving member (1) is axially arranged between a first component (20) and a clutch member (2) and fixedly connected to the first component (20), wherein the clutch member (2) is capable of axially reciprocating movement to engage with and disengage from the driving member (1), wherein in an engaged state, the first shaft (30) rotates together with the first component (20), and in a disengaged state, the first shaft (30) is independent of the first component (20), The reset assembly (3) is used to apply pressure to the clutch member (2) in a disengagement direction from the driving member (1). The actuator (5) comprises an action end (5a) capable of axial reciprocating motion, The pressing assembly (4) is configured to connect the action end (5a) to the clutch member (2), so that under the pressure of the reset assembly (3), a reciprocating movement of the action end (5a) can bring the clutch member (2) from a disengaged state to an engaged state and maintain the engaged state until the next reciprocating movement of the action end (5a) brings the clutch member (2) from the engaged state to a disengaged state.

2. The disconnection module (10) according to claim 1, wherein: The pressing component (4) comprises: A pressure plate (41) abuts against the clutch member (2) along the axial direction and is provided with N first protrusions (41a). A driven plate (42) is used to receive the force from the action end (5a) and is provided with 2N second protrusions (42a), The guide member (43) has a first supporting section (43d) for radially supporting the driven plate (42), wherein 2N slide grooves (43a, 43b) extending in the axial direction are arranged in the first supporting section, wherein the slide grooves are arranged to guide the second protrusion (42a) to slide in the axial direction, and include a first slide groove (43a) and a second slide groove (43b) having a radial depth smaller than that of the first slide groove, wherein the first slide grooves are alternately arranged with the second slide grooves in the circumferential direction, Wherein, in the disengaged state, the first protrusion (41a) can enter the first slide groove (43a) to slide in the axial direction, and in the engaged state, the first protrusion (41a) can be stopped on the outside of the second slide groove (43b).

3. The disconnection module (10) according to claim 2, wherein: The first protrusions (41a) respectively have first inclined surfaces (A1) inclined in the same direction relative to the radial plane, and the second protrusions (42a) respectively have abutting ends (B) for abutting against the first inclined surfaces, wherein, in each reciprocating movement of the action end, when the first protrusion (41a) is pushed to the outside of the slide groove by the second protrusion (42a), the first protrusion (41a) can drive the pressure plate (41) to rotate relative to the driven plate (42) by a certain angle each time under the action force of the action end (5a) and the pressure of the reset assembly (3), The guide member (43) is further provided with end inclined surfaces (A2, A3) cooperating with the first inclined surface (A1) of the pressure plate, so that the first protrusion (41a) of the pressure plate (41) can move toward the disengagement direction each time it rotates, thereby alternately entering the first slide groove (43a) and being stopped on the outside of the second slide groove (43b).

4. The disconnection module (10) according to claim 3, wherein: The guide member (43) is provided with a barrier portion (43c', 43c") located between the first slide groove (43a) and the second slide groove (43b), and the end inclined surface includes a second inclined surface (A2) assigned to the barrier portion and a third inclined surface (A3) assigned to the second slide groove (43b), wherein the third inclined surface is adjacent to the second inclined surface and has a smooth transition.

5. The disconnect module (10) according to claim 4, wherein: The barrier portion comprises a first barrier portion (43c') located upstream of the second slide groove (43b) along the rotation direction of the pressure plate (41) and a second barrier portion (43c") located downstream of the second slide groove (43b), wherein the second barrier portion protrudes axially from a third inclined surface (A3) of the second slide groove (43b).

6. The disconnect module (10) according to claim 2, wherein: The driven plate (42) and / or the pressure plate (41) are provided with a snap mechanism for preventing the driven plate (42) from being separated from the pressure plate (41) along the axial direction.

7. The disconnect module (10) according to claim 6, wherein: The snap mechanism comprises a plurality of snap claws (42b) protruding from one of the driven plate (42) and the pressure plate (41) and capable of snapping onto the edge of the other of the driven plate (42) and the pressure plate (41).

8. The disconnect module (10) according to claim 7, wherein: The edge is provided with an inclined groove (41b) extending obliquely to the axial direction, which is used to install the clamping claw (42b) and prevent the clamping claw from being disengaged in the axial direction.

9. The disconnect module (10) according to any one of claims 2 to 8, wherein: The guide member (43) is sleeved on the first shaft (30), and the driven plate (42) and the pressure plate (41) are respectively sleeved on the guide member.

10. The disconnect module (10) according to claim 9, wherein: The barrier portions (43c', 43c") are protrusions.

11. The disconnect module (10) according to any one of claims 2 to 8, wherein: The guide element (43) further comprises a second bearing section (43e) for supporting the clutch element (2) in a rotationally fixed manner, the second bearing section being spaced apart from the first bearing section (43d) in the axial direction.

12. The disconnect module (10) according to claim 11, wherein The guide member (2) also has a third supporting section (43f) adjacent to the second supporting section (43e), and the disconnection module (10) includes a clamping ring (6) arranged on the third supporting section, and the clamping ring is arranged on the side of the drive member (1) close to the first component (20) and leaves an axial gap with the drive member (1).

13. The disconnect module (10) according to claim 1, wherein: The reset component (3) comprises: A spring (31) acting in the axial direction; The end face bearing (34) is used to support the spring (31) in the axial direction, so that the spring can maintain the axial action even when the clutch member (2) is in the disengaged state.

14. The disconnect module (10) according to claim 13, wherein The reset component (3) further comprises: A first supporting gasket (32) for abutting against an end of the spring (31) facing away from the clutch member (2); A second supporting washer (33) is used to abut against one end of the spring (31) facing the clutch member (2). The end face bearing (34) is axially supported between the second bearing washer (33) and the clutch member (2) or axially supported between the first bearing washer (32) and the drive member (1) or the first member (20).

15. The disconnect module (10) according to claim 14, wherein The second supporting washer (33) is provided with a protrusion (33a) punched from one side, and the protrusion is used to support one end of the spring (31).

16. The disconnect module (10) according to claim 14, wherein The end face bearing (34) comprises a first supporting ring (34b) fixedly connected to the second supporting gasket (33) and a second supporting ring (34c) fixedly connected to the clutch member (2).

17. The disconnect module (10) according to claim 1, wherein The first component (20) is an idler gear in a reducer, and the driving member (1) is fixedly connected to the end surface of the idler gear.

18. A power transmission system for a vehicle, comprising: a motor having a drive shaft; A speed reducer having at least one transmission shaft; as well as The disconnect module (10) according to any one of claims 1 to 17, wherein the first shaft (30) comprises the drive shaft or the at least one transmission shaft.

19. A vehicle comprising the power transmission system according to claim 18.

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