Disconnection mechanism, power transmission system of vehicle and vehicle

Abstract

The present invention relates to a disconnect mechanism (10) for engaging or disengaging a movable part and a fixed part arranged on a first shaft extending in a first direction, in which the disconnect mechanism comprises: a shift fork (12) connected to the movable part and configured to be linearly reciprocally movable in the first direction to engage or disengage the movable part from the fixed part; an actuator (13) comprising an output end rotating about an axis of rotation of the actuator at a distance from the axis of rotation of the actuator; and the driving rod (14) is provided with a first end rotationally connected to the output end and a second end rotationally connected to the shifting fork, so that the output end can drive the shifting fork to do linear reciprocating motion when rotating. The invention also relates to a powertrain of a vehicle comprising said disconnect mechanism and to a vehicle comprising said powertrain. Compared with a traditional scheme, the disconnecting mechanism has the advantages that more space is saved, the cost is lower, and the operation response is faster.

Description

Technical Field

[0001] The invention relates to a disconnect mechanism, a power transmission system of a vehicle and a vehicle. 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 may 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 mechanism is added to the powertrain system of electric vehicles to reduce drag losses.

[0004] Traditional disconnect mechanisms usually use a ball screw. When the motor rotates, the rotational motion is converted into linear motion through the ball screw, thereby driving the shift fork and pushing the movable parts of the clutch to achieve the functions of engagement and disconnection. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a disconnection mechanism which has lower cost and higher efficiency than the prior art.

[0006] The above technical problems are solved by the following technical solutions.

[0007] In one exemplary aspect, the present invention provides a disconnection mechanism for engaging or disengaging a movable component and a fixed component arranged on a first axis extending along a first direction, wherein the disconnection mechanism comprises:

[0008] a shift fork connected to the movable member and configured to be capable of linear reciprocating motion in a first direction to engage or disengage the movable member with the fixed member;

[0009] an actuator comprising an output end that rotates about a rotation axis at a distance relative to the rotation axis of the actuator; and

[0010] The driving rod has a first end rotatably connected to the output end and a second end rotatably connected to the shift fork, so that the output end can drive the shift fork to perform linear reciprocating motion when rotating.

[0011] The present invention is based on the following concept: by providing an eccentric actuator output end, that is, the output end is not located on the rotation axis of the actuator, but is arranged to rotate around the rotation axis in a manner of a distance relative to the rotation axis, and by providing a connecting rod or a driving rod connecting the eccentric actuator output end to the shift fork, the linear reciprocating motion of the shift fork along the axial direction can be simply and cost-effectively achieved through the rotational movement of the actuator output end.

[0012] It should be noted that, according to the disconnecting mechanism of the present invention, the axial direction of the actuator output end is set to a second direction perpendicular to the first direction, and the output end is staggered with the fork in a third direction orthogonal to the first and second directions, so that a drive rod can be installed between the actuator output end and the fork.

[0013] Compared with the traditional solution, the disconnection mechanism of the present invention saves more space, has lower cost and has faster operation response. Since the disconnection mechanism of the present invention is arranged on the side of the first axis as a whole, the axial length of the power transmission system along the first direction will not be increased, which makes the power transmission system occupy less space in the first direction compared with the traditional solution of using a ball screw to push the shift fork, and improves the design freedom. In addition, the drive rod used in the present invention is a machined part, which is lower in cost than the ball screw. At the same time, the actuator motor in the present invention only needs to rotate a very small angle to achieve the linear movement of the shift fork, so the disconnection mechanism of the present invention has a fast operation response.

[0014] In an exemplary embodiment, the output end includes an output shaft, and the first end of the driving rod includes an opening sleeved on the output shaft.

[0015] In an exemplary embodiment, the disconnect mechanism includes a fork rod extending along a first direction, and the fork is supported on a fixed structure by the fork rod.

[0016] In an exemplary embodiment, the shift fork comprises a sleeve portion sleeved on the shift fork rod, and a drive rod mounting portion extending outwardly from the sleeve portion, wherein the drive rod mounting portion is rotatably connected to the second end of the drive rod.

[0017] In an exemplary embodiment, the drive rod mounting portion includes at least one arm, and the at least one arm is rotatably connected to the second end of the drive rod through a mounting member. In an exemplary embodiment, the drive rod mounting portion includes two arms to accommodate the second end of the drive rod between the two arms. In an exemplary embodiment, the mounting member is a pin.

[0018] In an exemplary embodiment, the second end of the drive rod is provided with a ball joint, and the drive rod mounting portion includes a groove for receiving the ball joint.

[0019] In an exemplary embodiment, the shift fork is fixedly connected to the shift fork rod via a sleeve portion, and the shift fork rod is slidably supported on the fixed structure along a first direction.

[0020] In an exemplary embodiment, the shift fork is slidably supported on the shift fork rod along a first direction via a sleeve portion, and the shift fork rod is fixedly connected to the fixing structure.

[0021] In an exemplary embodiment, a bushing is provided between the sleeve portion of the shift fork and the shift fork rod.

[0022] In an exemplary embodiment, the disconnect mechanism is disposed in a housing, and the fixing structure is a part of the housing or a component fixed together with the housing.

[0023] In an exemplary embodiment, the disconnect mechanism further includes a first position sensor for determining whether the output end is rotated to a certain position and / or a second position sensor for determining whether the shift fork is moved to a certain position, wherein the first position sensor is disposed inside the actuator.

[0024] According to another aspect of the present invention, a power transmission system for a vehicle is provided, comprising: a reducer having at least one transmission shaft, the at least one transmission shaft receiving torque from a driving mechanism; a tooth clutch comprising a movable component and a fixed component arranged on a first shaft, the first shaft being at least one transmission shaft; and the aforementioned disconnect mechanism, the disconnect mechanism receiving or disconnecting the torque transmission between the driving mechanism and the reducer by engaging or disengaging the movable component and the fixed component.

[0025] According to another aspect of the present invention, a vehicle is provided, comprising the power transmission system.

[0026] 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

[0027] 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:

[0028] Figure 1 A partial cross-sectional view of an exemplary embodiment of a power transmission system for a vehicle according to the present invention is shown.

[0029] Figure 2 Shows Figure 1 A cross-sectional view of some components.

[0030] Figure 3A Shows Figure 2 A three-dimensional schematic diagram of some components.

[0031] Figure 3B An exploded view of the components associated with the clutch is shown.

[0032] Figure 4A A schematic perspective view of a disconnection mechanism according to the present invention is shown.

[0033] Figure 4B Another schematic perspective view of the disconnection mechanism according to the present invention is shown.

[0034] Figure 5A A three-dimensional schematic diagram showing the assembly relationship between the disconnect mechanism of the present invention and various components of the power transmission system.

[0035] Figure 5B Another stereoscopic schematic diagram shows the assembly relationship between the disconnect mechanism of the present invention and various components of the power transmission system.

[0036] Fig. 6A Another application scenario of the disconnection mechanism according to the present invention is schematically shown.

[0037] Figure 6B Another application scenario of the disconnection mechanism according to the present invention is schematically shown.

[0038] Fig. 7A The connection relationship between the drive rod and the actuator and the shift fork is schematically shown.

[0039] Figure 7B Schematically shows Fig. 7A The starting position and ending position of the driving rod in the working state.

[0040] In the figure:

[0041] Drivetrain 100

[0042] Disconnection mechanism 10 Shift fork lever 11 Shift fork 12 Sleeve portion 12a

[0043] Drive rod mounting portion 12b Pin 12c Shift fork arm 12d Actuator 13 Output end 13a

[0044] Drive rod 14 First end 14a Second end 14b Bushing 15

[0045] Motor 20

[0046] Speed ​​reducer 30 Input gear 31 Intermediate first gear 32 Intermediate second gear 33

[0047] Input shaft 34 Intermediate shaft 35 Needle bearing 35a Driven gear 36

[0048] Clutch 40 Engagement teeth 41 Gear sleeve 42 Gear hub 43

[0049] Differential 50 Housing 60

[0050] First direction x Second direction y Third direction z Rotation axis A DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] Reference is now made to the drawings, wherein like numerals refer to like elements throughout.

[0054] Figure 1A partial cross-sectional view of an exemplary embodiment of a power transmission system 100 for a vehicle according to the present invention is shown. The power transmission system 100 comprises: a reducer 30 having at least one transmission shaft, such as a reducer input shaft 34 and an intermediate shaft 35; a clutch 40 comprising a movable component and a fixed component arranged on a first shaft, wherein the first shaft comprises the at least one transmission shaft, the fixed component is, for example, an engaging tooth 41, and the movable component is, for example, a gear sleeve 42; and a disconnect mechanism 10 (see FIG. 4 ) for engaging or disengaging the movable component and the fixed component.

[0055] 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.

[0056] In the illustrated embodiment, the motor 20 is a synchronous motor with permanent magnets. The motor 20 includes a drive shaft (not shown) that is driven by electricity generated by the electromagnetic effect of the rotor and stator in the motor 20. The motor may also be an asynchronous motor. The embodiments of the present disclosure are not limited by the specific type of the motor.

[0057] The reducer 30 is connected to the motor 20. The reducer 30 can convert the high speed and low torque of the motor into a low speed and high torque. The reducer 30 can have an input shaft 34, and the reducer input shaft can be connected to the motor drive shaft and coaxially arranged to receive the torque from the motor. For example, the reducer input shaft can be rotationally fixed to the motor drive shaft. It should be understood that the motor drive shaft and the reducer input shaft can be two different shafts that are rotationally connected by a connecting element (for example, by a spline connection), or can be set to the same shaft, which is not limited here.

[0058] The reducer 30 may also include a multi-stage reduction gear connected to the motor 20 and the differential 50 and having different speeds, thereby increasing the torque by reducing speed, including, for example, an input gear 31 driven by a motor drive shaft or a reducer input shaft. The reducer 30 may also include, for example, an intermediate shaft 35, which may be connected to the input gear 31 and another driven gear 36 connected to the differential 50, thereby distributing the reduced driving force by the differential 50 among different wheels.

[0059] The input gear 31 may be integrally formed on the reducer input shaft 34 and coaxially arranged with the reducer input shaft 34. For example, the input gear 31 may be integrally forged with the reducer input shaft 34 and the tooth surface may be machined.

[0060] The first intermediate gear 32 and the second intermediate gear 33 are sequentially arranged on the intermediate shaft 35. The intermediate shaft 35 is arranged in parallel with the reducer input shaft 34. The intermediate shaft 35 can be a hollow shaft. The first intermediate gear 32 is in driving engagement with the input gear 31. The second intermediate gear 33 can be in driving engagement with the driven gear 36 connected to the differential 50.

[0061] Thus, a two-stage helical gear parallel shaft reducer arrangement is exemplarily realized from the reducer input shaft 34 to the differential 50. The first stage reduction gear includes an input gear 31 connected to the reducer input shaft 34 and an intermediate first gear 32 connected to the intermediate shaft 35. The second stage reduction gear includes an intermediate second gear 33 connected to the intermediate shaft 35 and a driven gear 36 connected to the differential 50.

[0062] Figure 2 Shows Figure 1 sectional view of a portion of the components, in which the clutch 40 is clearly shown. Figure 3A Shows Figure 2 A three-dimensional schematic diagram of some components. Figure 3B An exploded view of the components associated with the clutch is shown.

[0063] The clutch 40 may be arranged on the speed reducer input shaft 34 or the intermediate shaft 35 to provide intermittent transmission of driving force or torque between the motor 20 and the differential 50. In this exemplary embodiment, as shown in FIG. Figure 2 As shown, the clutch 40 is arranged on the intermediate shaft 35 .

[0064] The clutch 40 includes a movable part and a fixed part. In this context, the movable part refers to a part that is movable in the axial direction of the intermediate shaft 35, and the fixed part refers to a part that is immovable in the axial direction of the intermediate shaft 35. That is, the "movable" and "fixed" parts are referred to in the axial direction. The fixed part itself is arranged to be rotatable around the intermediate shaft 35.

[0065] In the exemplary embodiment, the clutch 40 is designed as a tooth clutch. Figure 3A -B, the fixed component is a coupling tooth 41, which is fixed on the first intermediate gear 32. The first intermediate gear 32 and the intermediate shaft 35 are connected by Figure 2 The movable part is a gear sleeve 42, which is sleeved on a gear hub 43, and the gear hub 43 is fixed on the intermediate shaft 35 by spline fitting, for example. Figure 3BIt can be seen that the gear sleeve 42 is provided with an internal spline, and the gear hub 43 is provided with an external spline that matches the internal spline, so that the gear sleeve 42 can move axially relative to the gear hub 43 under the axial driving force of the shift fork 12, so that the internal spline of the gear sleeve 42 is partially engaged with the engaging teeth 41 fixed on the intermediate first gear 32 while maintaining the state of matching with the external spline of the gear hub 43. In this engaged state, the driving force / torque of the intermediate first gear 32 from the motor 20 can be transmitted to the intermediate second gear 33 via the intermediate shaft 35, and then transmitted to the differential 50 and the wheels connected thereto. Conversely, when the gear sleeve 42 is disengaged from the engaging teeth 41, the driving force / torque transmission is disconnected, and even if the wheels still drive the auxiliary drive differential to operate, the rotation of the wheels drives as few transmission mechanisms as possible, thereby reducing drag losses.

[0066] Figure 4A A schematic perspective view of a disconnect mechanism 10 according to the present invention is shown. Figure 4B Another schematic perspective view of the disconnection mechanism 10 according to the present invention is shown.

[0067] The disconnect mechanism 10 is used to engage or disengage a movable component and a fixed component arranged on a first shaft. The movable component and the fixed component are, for example, a gear sleeve 42 and an engagement tooth 41, respectively, but can also be components of other types of clutches. The first shaft is, for example, a reducer input shaft 34 or an intermediate shaft 35 and extends along a first direction x.

[0068] The disconnect mechanism 10 includes a shift fork 12 connected to Figure 2 The gear sleeve 42 in the fork 12 is configured to be able to perform linear reciprocating motion along the first direction x so that the gear sleeve 42 engages or disengages with the engaging teeth 41; the actuator 13 includes an output end 13a, which rotates around the rotation axis A at a distance relative to the rotation axis A of the actuator 13, wherein the rotation axis A is Figure 4B and a drive rod 14 having a first end 14a rotatably connected to the output end 13a and a second end 14b rotatably connected to the fork 12, so that the output end 13a can drive the fork 12 to perform linear reciprocating motion when rotating.

[0069] exist Figure 4A and Figure 4B In the exemplary embodiment shown, the output end 13a includes an output shaft, and the first end 14a of the drive rod 14 includes an opening sleeved on the output shaft. This makes it possible to simply and conveniently achieve a rotational connection between the output end and the drive rod. In addition, the axial direction of the output shaft is set to a second direction y perpendicular to the first direction x, and the output shaft is staggered with the fork rod 11 extending along the first direction x in a third direction z orthogonal to x and y, and thus the drive rod 14 can be installed between the output shaft and the fork 12.

[0070] In some exemplary embodiments, other designs of the output end 13a and the first end 14a may also be envisioned. For example, the first end 14a may be configured as a ball joint, and the output end 13a may be configured as a support for accommodating the ball joint.

[0071] Here, the disconnect mechanism 10 comprises a fork lever 11 extending in a first direction, and the fork 12 is supported on a fixed structure via the fork lever 11. Thus, it is possible to simply and effectively ensure that the fork 12 performs a linear reciprocating motion in the first direction x.

[0072] In this context, the fixed structure refers to a structure fixed along the axial and tangential directions of the first axis, and in particular, refers to a structure fixed along the axial, radial and tangential directions of the first axis. In an exemplary embodiment, the disconnect mechanism is disposed in a housing 60, and the fixed structure is a part of the housing 60 or a component fixed to the housing 60. The housing 60 may be a housing of the reducer 30 or a housing of the motor 20, or a housing shared by the reducer 30 and the motor 20.

[0073] It is also conceivable within the scope of the present invention that the shift fork 12 itself has a section for supporting on a fixed structure, or that the shift fork rod 11 can be formed integrally with the shift fork 12 .

[0074] exist Figure 4A and Figure 4B In the exemplary embodiment shown, the shift fork 12 has a sleeve portion 12 a sleeved on the shift fork rod 11 and a drive rod mounting portion 12 b extending outward from the sleeve portion 12 a .

[0075] In the present exemplary embodiment, the drive rod mounting portion 12b includes two arms to accommodate the second end 14b of the drive rod between the two arms, and the two arms are rotationally connected to the second end 14b of the drive rod through a pin 12c. In addition, the shift fork 12 has two shift fork arms 12d, which can radially clamp on the outer ring of the gear sleeve 42 of the clutch 40 so that the gear sleeve 42 can perform linear reciprocating motion along the first direction x.

[0076] In this exemplary embodiment, the shift fork 12 is slidably supported on the shift fork rod 11 through the sleeve portion 12a along the first direction x, and the shift fork rod 11 is fixedly connected to the fixed structure. Here, a bushing 15 for reducing sliding friction is provided between the sleeve portion 12a of the shift fork 12 and the shift fork rod 11. This design method can simply, conveniently and at a low cost realize the sliding support of the shift fork on the shift fork rod, so that the shift fork can perform linear reciprocating motion along the first direction x.

[0077] In some exemplary embodiments, the shift fork 12 may be fixedly connected to the shift fork rod 11 via a sleeve portion 12 a , and the shift fork rod 11 may be slidably supported on the fixed structure along a first direction.

[0078] In some exemplary embodiments, the second end 14b of the drive rod may also be provided with a ball joint, and the drive rod mounting portion 12b may be provided with a groove for receiving the ball joint. In this design, the ball joint may be installed in the groove by a shrink fit.

[0079] In an exemplary embodiment, the disconnect mechanism 10 further includes a first position sensor for determining whether the output end is rotated to a certain position and / or a second position sensor for determining whether the shift fork is moved to a certain position, wherein the first position sensor is disposed inside the actuator 13 .

[0080] The shape of the driving rod 14 can be adapted to the relative position between the driving rod mounting portion 12b of the shift fork 12 and the output end 13a. The driving rod 14 shown here has a middle bending portion, so that the first end and the second end of the driving rod are located on different planes. As a result, the first end 14a of the driving rod 14 is appropriately close to the connection point with the output shaft of the actuator 13, thereby making the cantilever smaller and more conducive to supporting the driving rod 14. Depending on the specific application conditions, the driving rod 14 can also have a straight shape.

[0081] Figure 5A The schematic three-dimensional diagram shows the assembly relationship between the disconnect mechanism 10 of the present invention and the components of the power transmission system 100 . Figure 5B Another perspective schematic diagram shows the assembly relationship between the disconnect mechanism 10 of the present invention and the components of the power transmission system 100 .

[0082] Depend on Figure 5A and Figure 5B It can be seen that the fork arm 12d of the fork 12 is radially clamped on the outer ring of the gear sleeve 42 of the gear clutch, and the fork rod 11 is fixedly connected to the housing 60 (see Figure 1 The entire actuator 13 is arranged on one side of the intermediate shaft 35 of the reducer 30, rather than being arranged axially, thereby reducing the axial length of the power transmission system 100 along the first direction x compared to the traditional ball screw solution that needs to be arranged axially, thereby saving space and improving design freedom.

[0083] Figure 1 5 shows that the disconnect mechanism 10 of the present invention is installed on the left side of the first intermediate gear 32 and is used to disconnect the first intermediate gear 32, specifically, to disconnect the first intermediate gear 32 through the tooth clutch 40. It should also be pointed out that the disconnect mechanism 10 of the present invention may also have other application scenarios.

[0084] Fig. 6A Another application of the disconnect mechanism 10 according to the present invention is schematically shown, wherein the tooth clutch 40 (including the engaging teeth 41 and the gear sleeve 42) is installed on the intermediate shaft 35 to the right of the first intermediate gear 32, between the first intermediate gear 32 and the second intermediate gear 33, for disconnecting the first intermediate gear 32. Therefore, the disconnect mechanism 10 can be used between the first intermediate gear 32 and the second intermediate gear 33. Figure 1 The opposite side shown in FIG. 5 is disconnected from the intermediate first gear 32 by the tooth clutch 40 .

[0085] Figure 6B Another application scenario of the disconnect mechanism 10 according to the present invention is schematically shown, wherein a tooth clutch 40 (including engaging teeth 41 and a gear sleeve 42) is installed on the right side of the middle second gear 33 on the intermediate shaft 35, for disconnecting the middle second gear 33. Therefore, the disconnect mechanism 10 can disconnect the middle second gear 33 through the tooth clutch 40.

[0086] Fig. 7A The connection relationship between the drive rod 14 and the actuator 13 and the fork 12 is schematically shown. For the sake of clarity, the drive rod mounting portion 12b of the fork rod 11 and the fork 12 are omitted. Figure 7B Schematically shows Fig. 7A The starting position and ending position of the driving rod in the working state.

[0087] like Fig. 7A As shown, the first end 14a of the driving rod 14 is rotatably connected to the output end 13a, and the second end 14b is rotatably connected to the shift fork 12 through the pin 12c. By setting the first end 14a and the second end 14b of the driving rod 14 to be rotatably connected, the output end 13a can drive the shift fork to perform linear reciprocating motion when rotating. Figure 7B When the first end 14a of the driving rod 14 rotates counterclockwise from the first starting position SP1 to the first ending position EP1 around the rotation axis A, the second end 14b of the driving rod 14 moves rightward from the second starting position SP2 to the second ending position EP2, wherein the second starting position SP2 corresponds to a state in which the gear sleeve 42 is disengaged from the engaging teeth 41, and the second ending position EP2 corresponds to a state in which the gear sleeve 42 is engaged with the engaging teeth 41.

[0088] It can be seen that the operation mode of the actuator motor in the present invention is also different from the prior art. For a traditional ball screw, the actuator motor rotates continuously, and the ball screw converts multiple turns of rotation into the axial linear motion of the fork, but according to the solution of the present invention, the actuator motor only needs to rotate a small angle to achieve the linear motion of the fork. Therefore, the present invention not only reduces the axial length of the entire power transmission system and saves space, but also has a fast operating response and high working efficiency.

[0089] In addition, the disconnect mechanism of the present invention also has cost advantages, because the drive rod is a machined part, which is less expensive than a ball screw. The purpose of the present invention can be achieved by only setting the drive rod to have the size and position accuracy that matches the output shaft and the pin.

[0090] 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 mechanism (10) for engaging or disengaging a movable component and a fixed component arranged on a first axis extending along a first direction (x), wherein: The disconnection mechanism (10) comprises: a shift fork (12) connected to the movable component and configured to be capable of linear reciprocating motion along a first direction (x) so as to engage or disengage the movable component with the fixed component; an actuator (13) comprising an output end (13a) which rotates about the rotation axis (A) at a distance relative to the rotation axis of the actuator; and The driving rod (14) has a first end (14a) rotatably connected to the output end (13a) and a second end (14b) rotatably connected to the shift fork (12), so that the output end can drive the shift fork to perform linear reciprocating motion when rotating.

2. The disconnect mechanism (10) according to claim 1, wherein the output end (13a) comprises an output shaft, and the first end (14a) of the drive rod (14) comprises an opening sleeved on the output shaft.

3. The disconnect mechanism (10) according to claim 1, comprising a fork rod (11) extending along a first direction, and the fork (12) is supported on a fixed structure through the fork rod (11).

4. According to the disconnect mechanism (10) of claim 3, the fork (12) has a sleeve portion (12a) sleeved on the fork rod (11), and a drive rod mounting portion (12b) extending outward from the sleeve portion (12a), and the drive rod mounting portion is rotationally connected to the second end (14b) of the drive rod.

5. The disconnect mechanism (10) according to claim 4, wherein the drive rod mounting portion (12b) comprises at least one arm, and the at least one arm is rotatably connected to the second end (14b) of the drive rod via a mounting member.

6. The disconnect mechanism (10) according to claim 5, wherein the drive rod mounting portion (12b) comprises two arms to receive the second end (14b) of the drive rod between the two arms.

7. The disconnect mechanism (10) according to claim 5, wherein the mounting member is a pin (12c).

8. The disconnect mechanism (10) according to claim 4, wherein the second end (14b) of the drive rod is provided with a ball joint, and the drive rod mounting portion (12b) comprises a groove for receiving the ball joint.

9. The disconnect mechanism (10) according to any one of claims 4 to 8, wherein the shift fork (12) is fixedly connected to the shift fork rod (11) via a sleeve portion (12a), and the shift fork rod is slidably supported on the fixed structure along a first direction.

10. The disconnect mechanism (10) according to any one of claims 4 to 8, wherein the shift fork (12) is slidably supported on the shift fork rod (11) along a first direction via a sleeve portion (12a), and the shift fork rod is fixedly connected to the fixed structure.

11. The disconnect mechanism (10) according to claim 10, wherein a bushing (15) is provided between the sleeve portion (12a) of the shift fork (12) and the shift fork rod (11).

12. The disconnect mechanism (10) according to claim 3, wherein the disconnect mechanism is arranged in a housing, and the fixing structure is a part of the housing or a component fixed to the housing.

13. The disconnect mechanism (10) according to claim 1 further comprises a first position sensor for determining whether the output end is rotated into position and / or a second position sensor for determining whether the shift fork is moved into position, wherein the first position sensor is disposed inside the actuator (13).

14. A power transmission system (100) for a vehicle, comprising: A speed reducer (30) having at least one transmission shaft, wherein the at least one transmission shaft receives torque from a driving mechanism; A tooth clutch (40) comprises a movable component and a fixed component arranged on a first shaft, the first shaft being at least one transmission shaft; and According to the disconnection mechanism (10) according to any one of claims 1 to 13, the disconnection mechanism receives or disconnects the torque transmission between the driving mechanism and the reducer (30) by engaging or disengaging the movable component and the fixed component.

15. A vehicle comprising the powertrain system according to claim 14.

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