An electronic disconnect device

Abstract

The application discloses an electronic disconnecting device, and relates to the technical field of automobile transmission, which comprises a shell assembly, a driving assembly, a transmission assembly, a shift fork assembly and a driving shaft assembly. The driving shaft assembly is installed in the shell assembly, and the shift fork assembly is also installed on the shell assembly and connected with the driving shaft assembly. The driving assembly is connected with the shift fork assembly through the transmission assembly, the driving shift fork body moves along the axial direction of the driving shaft assembly, and the disconnecting or combination of the driving shaft assembly is realized. The transmission assembly is composed of a rotation-rotation conversion assembly and a rotation-straight line conversion assembly, wherein the rotation-rotation conversion assembly comprises a worm wheel and a worm, the driving assembly is connected with the worm to drive the rotation of the worm, and the worm wheel is engaged with the worm and rotationally installed on the shell assembly. The rotation-straight line conversion assembly is connected with the worm wheel and the shift fork assembly, and converts the rotation movement of the worm wheel into the straight line movement of the shift fork assembly. Through the improvement of the transmission assembly, the problems of limited motor arrangement direction, large inertial force and complex structure are solved.

Description

Technical Field

[0001] This application relates to the field of automotive transmission technology, and more particularly to an electronic disconnection device. Background Technology

[0002] With increasing global awareness of environmental protection and the advancement of sustainable development strategies, new energy vehicles, especially electric vehicles, have become an important direction for the development of the automotive industry. Electric vehicles, with their advantages such as low emissions and low noise, are gradually becoming a market favorite. The core power system of an electric vehicle typically includes key components such as an electric motor, a reducer, and an inverter. To meet different driving needs, four-wheel drive electric vehicles are equipped with independent power drive systems on both the front and rear axles, generally including a main drive motor power system and an auxiliary drive motor power system.

[0003] In practical applications, when the vehicle does not require power from the main drive motor, an electronic disconnect device is typically used to disconnect the motor drive shaft from the wheel-end half-shaft in order to reduce the back-dragging torque loss of the motor and reducer and improve energy efficiency. This design can effectively increase the driving range of electric vehicles.

[0004] Existing electronic disconnection devices mainly include sliding sleeve disconnection devices, clutch disconnection devices, and dog tooth disconnection devices. However, each of them still has shortcomings in the transmission structure design between the drive motor and the shift fork. For example, the power disconnection system and vehicle disclosed in patent publication number CN118528764A drive the eccentric shift finger to rotate eccentrically through the motor, thereby driving the shift fork to move axially. This transmission method not only has the problems of limited motor arrangement direction and large inertial force, but also lacks self-locking capability, which requires the addition of an external self-locking mechanism, increasing the structural complexity and thus affecting the energy efficiency and driving comfort of electric vehicles.

[0005] Therefore, it is urgent to propose a new design solution to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of this, the purpose of this application is to provide an electronic disconnection device that can solve the problems of limited motor arrangement direction, large inertial force, and complex structure due to the need for an external self-locking mechanism in the prior art, so as to improve the energy efficiency and driving comfort of electric vehicles.

[0007] To achieve the above-mentioned technical objectives, this application provides an electronic disconnection device, including a housing assembly, a drive assembly, a transmission assembly, a shift fork assembly, and a drive shaft assembly;

[0008] The drive shaft assembly is mounted on the housing assembly;

[0009] The shift fork assembly is mounted on the housing assembly and connected to the drive shaft assembly;

[0010] The drive assembly is connected to the shift fork assembly via the transmission assembly, and is used to drive the shift fork body of the shift fork assembly to move along the axial direction of the drive shaft assembly, so as to drive the drive shaft assembly to disconnect or engage.

[0011] The transmission assembly includes a rotary-rotation conversion assembly and a rotary-linear conversion assembly;

[0012] The rotary-rotation conversion assembly includes a worm gear and a worm.

[0013] The drive assembly is connected to the worm gear and is used to drive the worm gear to rotate;

[0014] The worm gear is rotatably mounted on the housing assembly and meshes with the worm.

[0015] The rotary-to-linear conversion assembly is connected between the worm gear and the shift fork assembly, and is used to convert the rotational motion of the worm gear into the linear motion of the shift fork assembly.

[0016] Furthermore, the rotary-linear conversion assembly includes a connecting cylinder and a connecting column;

[0017] The connecting cylinder is coaxially connected to one side of the worm gear and is provided with a first helical groove;

[0018] The connecting post is connected to the shift fork assembly and can extend movably into the connecting cylinder;

[0019] The connecting post is provided with a first pusher that engages with the first spiral groove and slides along the spiral.

[0020] Furthermore, the connecting post is also provided with a second pusher, which is symmetrically distributed with the center of the first pusher;

[0021] The connecting cylinder is also provided with a second spiral groove for the second pusher to be inserted.

[0022] Furthermore, the first pusher is fitted with a first radial bearing;

[0023] The inner ring of the first radial bearing is axially fixed to the first push pin, while its outer ring mates with the first helical groove.

[0024] The second push-up assembly is fitted with a second radial bearing (a).

[0025] The inner ring of the second radial bearing is axially fixed to the second pusher, while its outer ring mates with the second helical groove.

[0026] Furthermore, the drive assembly includes an actuator motor and a motor controller;

[0027] The motor controller is connected to the actuator motor and is used to control the actuator motor to perform rotational motion based on control signals;

[0028] The rotor shaft of the actuator motor is connected to the worm gear;

[0029] The worm gear is fitted with a first b radial bearing and a second b radial bearing at both ends;

[0030] The inner ring of the first radial bearing b is connected to the worm gear, while its outer ring is connected to the housing assembly.

[0031] The inner ring of the second radial bearing b is connected to the worm gear, while its outer ring is connected to the housing assembly.

[0032] Furthermore, the shift fork assembly includes a shift fork body and a shift fork shaft;

[0033] The shift fork shaft is arranged parallel to the drive shaft assembly and is fixedly connected to the housing assembly;

[0034] The shift fork body is mounted on the shift fork shaft and slides along the axial direction of the shift fork shaft.

[0035] The shift fork body is connected to the rotary-linear conversion assembly;

[0036] The shift fork body is provided with a first a linear bearing and a second a linear bearing installed at both ends;

[0037] The shift fork body has a first a groove on the side of the first a linear bearing away from the second a linear bearing, and a first a retaining spring for fixing the axial position of the first a linear bearing is installed therein.

[0038] The shift fork body has a second a slot on the side of the second a linear bearing away from the first a linear bearing, which is fitted with a second a retaining spring for fixing the axial position of the second a linear bearing.

[0039] The outer rings of the first linear bearing a and the second linear bearing a are connected to the shift fork body, while their respective inner rings are connected to the shift fork shaft.

[0040] Furthermore, it also includes a sliding sleeve assembly;

[0041] The shift fork assembly is connected to the drive shaft assembly via the sliding sleeve assembly, and is used to control the drive shaft assembly to disconnect or engage by driving the sliding sleeve body of the sliding sleeve assembly to move.

[0042] Furthermore, the drive shaft assembly includes a motor drive shaft and a wheel-end half-shaft;

[0043] A first radial bearing is installed on the wheel end half shaft;

[0044] The outer ring of the first c-radial bearing is fixed to the housing assembly, while its inner ring is fixed to the bearing mating surface of the wheel end half shaft.

[0045] A second radial bearing is mounted on the motor drive shaft;

[0046] The outer ring of the second c-radial bearing is fixed to the housing assembly, while its inner ring is fixed to the bearing mating surface of the motor drive shaft.

[0047] The motor drive shaft and the wheel end half shaft are further radially fixed and axially limited by a third c radial bearing;

[0048] The inner ring of the third c radial bearing is fixed to the drive shaft, while its outer ring is fixed to the wheel end half shaft.

[0049] The sliding sleeve assembly includes a sliding sleeve body, a first b retaining ring, and a second b retaining ring;

[0050] One end of the sliding sleeve body moves axially on the wheel end half shaft via a spline, while the other end moves axially on the motor drive shaft via a spline.

[0051] The first b retaining ring is fitted into the first b retaining groove on the wheel end half shaft to restrict the axial movement of one end of the sliding sleeve body;

[0052] The second b retaining ring is fitted into the second b retaining groove on the motor drive shaft to restrict the axial movement of the other end of the sliding sleeve body.

[0053] Furthermore, the drive shaft assembly also includes a first oil seal, a second oil seal, and a bushing body;

[0054] The outer ring of the first oil seal is fixed to the bearing hole of the housing assembly, while its inner ring is fixed to the oil seal mating surface of the wheel end half shaft.

[0055] The outer ring of the second oil seal is fixed to the bearing hole of the housing assembly, while its inner ring is fixed to the oil seal mating surface of the motor drive shaft.

[0056] The bushing body is connected to the wheel end half shaft and is axially limited by the bushing groove of the housing assembly.

[0057] Furthermore, the housing assembly includes a housing, a cover plate, and an oil pipe joint;

[0058] One end of the housing is detachably connected to the cover plate;

[0059] The other end of the housing is detachably connected to the drive assembly;

[0060] One end of the oil pipe connector is interference-fitted with the connector hole on the housing, and the other end is connected to the lubricant output end.

[0061] As can be seen from the above technical solutions, the electronic disconnection device designed in this application has the following beneficial effects:

[0062] 1. The transmission component design includes a rotary-rotation conversion component, which is a worm gear and worm shaft design. It has a simple structure and self-locking characteristics, making it safer and more reliable to use. At the same time, the drive component can be arbitrarily arranged and adjusted in the circumferential direction of the worm gear according to the usage conditions, which increases the overall compatibility of the device. Therefore, it can be applied to the disconnection and engagement control of drive shaft components of various transmission components such as gearboxes and transfer cases.

[0063] 2. The transmission assembly is also designed to include a rotary-linear conversion assembly, which works in conjunction with the rotary-rotary conversion assembly to convert the rotary motion of the worm gear into the linear motion of the shift fork assembly. This conversion mechanism design reduces the inertial force generated during motion conversion, thereby improving response speed and motion accuracy.

[0064] In summary, the electronic disconnection device designed in this application solves the problems of limited motor arrangement direction, large inertial force, and complex structure caused by the need for an external self-locking mechanism due to the design limitations of the transmission components in the prior art, thereby improving the energy efficiency and driving comfort of electric vehicles. Attached Figure Description

[0065] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0066] Figure 1 This is a schematic diagram of the structure of an electronic disconnection device provided in this application;

[0067] Figure 2 This is a cross-sectional view of the electronic disconnection device provided in this application from one direction.

[0068] Figure 3 This is a cross-sectional view of an electronic disconnection device provided in this application from another direction.

[0069] Figure 4 This is an exploded structural diagram of the drive assembly of an electronic disconnection device provided in this application;

[0070] Figure 5 This is an exploded structural diagram of the fork assembly of an electronic disconnecting device provided in this application;

[0071] Figure 6 This is an exploded structural diagram of the sliding sleeve assembly of an electronic disconnecting device provided in this application;

[0072] Figure 7 This is an exploded structural diagram of the drive shaft assembly of an electronic disconnection device provided in this application;

[0073] Figure 8 This is an exploded structural diagram of the housing assembly of an electronic disconnection device provided in this application;

[0074] In the diagram: 1. Drive assembly; 101. Actuating motor; 102. Motor controller; 2. Shift fork assembly; 201. Shift fork body; 2011. First a-slot; 2012. Second a-slot; 2013. First push-pull; 2014. Second push-pull; 202. Shift fork shaft; 203. First a-circlip; 204. Second a-circlip; 205. First a-linear bearing; 206. Second a-linear bearing; 207. First a-radial bearing; 208. Second a-radial bearing; 3. Sliding sleeve assembly; 301. First b-circlip; 302. Second b-circlip; 303. Sliding sleeve body; 4. Drive shaft assembly; 401. 4011, Second b slot; 402, Wheel end half shaft; 4021, First b slot; 403, First c radial bearing; 404, Second c radial bearing; 405, First oil seal; 406, Second oil seal; 407, Third c radial bearing; 408, Bushing; 5, Housing assembly; 501, Housing; 502, Cover plate; 503, Oil pipe joint; 6, Transmission assembly; 103, Connecting cylinder; 1031, First helical groove; 1032, Second helical groove; 104, Second b radial bearing; 105, First b radial bearing; 106, Worm; 107, Worm wheel; 108, Connecting column. Detailed Implementation

[0075] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0076] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0078] This application discloses an electronic disconnection device.

[0079] Please see Figure 1 One embodiment of an electronic disconnection device provided in this application includes:

[0080] The housing assembly 5, the drive assembly 1, the transmission assembly 6, the shift fork assembly 2, and the drive shaft assembly 4.

[0081] The drive shaft assembly 4 is mounted on the housing assembly 5; the shift fork assembly 2 is mounted on the housing assembly 5 and connected to the drive shaft assembly 4.

[0082] The drive assembly 1 is connected to the shift fork assembly 2 via the transmission assembly 6, and is used to drive the shift fork body 201 of the shift fork assembly 2 to move along the axial direction of the drive shaft assembly 4, so as to drive the drive shaft assembly 4 to disconnect or engage.

[0083] The transmission assembly 6 includes a rotary-rotation conversion assembly and a rotary-linear conversion assembly.

[0084] The rotary-rotation conversion assembly includes a worm gear 107 and a worm 106; the drive assembly 1 is connected to the worm 106 and is used to drive the worm 106 to rotate; the worm gear 107 is rotatably mounted on the housing assembly 5 (the worm gear is fixedly connected to the housing assembly 5 in the axial direction, so that it can only rotate and cannot move axially) and meshes with the worm 106.

[0085] The rotary-to-linear conversion assembly is connected between the worm gear 107 and the shift fork assembly 2, and is used to convert the rotary motion of the worm gear 107 into the linear motion of the shift fork assembly 2.

[0086] The electronic disconnection device designed in this application has the following beneficial effects:

[0087] 1. The transmission component 6 is designed to include a rotary-rotation conversion component, which is a design of worm gear 107 and worm 106. It has a simple structure and self-locking characteristics, making it safer and more reliable to use. At the same time, the drive component 1 can be arbitrarily arranged and adjusted in the circumferential direction of the worm gear 107 according to the usage conditions, which increases the overall compatibility of the device. Therefore, it can be applied to the disconnection and engagement control of drive shaft components 4 of various transmission components such as gearboxes and transfer cases.

[0088] 2. The transmission component 6 is also designed to include a rotary-linear conversion component, which works in conjunction with the rotary-rotary conversion component to convert the rotary motion of the worm gear 107 into the linear motion of the shift fork component 2. This conversion mechanism design makes the inertial force generated during the motion conversion process smaller, thereby improving the response speed and motion accuracy.

[0089] In summary, the electronic disconnection device designed in this application, through the design improvement of the transmission component 6, solves the problems in the prior art caused by the limitation of the motor arrangement direction, the large inertial force, and the need for an external self-locking mechanism, which makes the structure complex, thus improving the energy efficiency and driving comfort of electric vehicles.

[0090] The above is Embodiment 1 of an electronic disconnection device provided in this application. The following is Embodiment 2 of an electronic disconnection device provided in this application. Please refer to the following for details. Figures 1 to 8 .

[0091] Based on the solution of Embodiment 1 above:

[0092] Furthermore, such as Figures 2 to 5 As shown, the rotary-to-linear conversion assembly design includes a connecting cylinder 103 and a connecting column 108.

[0093] The connecting cylinder 103 is coaxially and integrally connected to one side of the worm gear 107, and is provided with a first spiral groove 1031.

[0094] The connecting post 108 is integrally connected to the shift fork assembly 2 and can extend into the connecting cylinder 103; the connecting post 108 is provided with a first pusher 2013 that engages with the first spiral groove 1031 and slides along the spiral.

[0095] When the worm gear 107 rotates, it drives the connecting cylinder 103 connected to it to rotate. The rotation of the connecting cylinder 103 causes the first spiral groove 1031 to move. Since the first pusher 2013 is stuck in the first spiral groove 1031, under the guidance of the spiral groove, the first pusher 2013 moves along the spiral path, thereby pushing the connecting column 108 to make linear motion in the connecting cylinder 103, realizing the conversion from rotational motion to linear motion.

[0096] This design structure is relatively simple. Through the cooperation of the connecting cylinder 103 and the connecting column 108 based on spiral grooves and pushers, the conversion between rotational and linear motion is cleverly achieved, reducing cost and manufacturing difficulty. At the same time, based on the cooperation of the mechanical structure, this component has high operational stability and can maintain relatively precise motion conversion during long-term use, demonstrating strong reliability.

[0097] Besides the spiral groove and push-pull fit, it can also be a threaded fit (the principle of which can be referred to as electric telescopic rod), but its reliability is not as good as the spiral groove and push-pull fit. Those skilled in the art can make changes to the design according to actual needs without restriction.

[0098] Furthermore, such as Figure 5 As shown, the connecting column 108 is also provided with a second pusher 2014, which is symmetrically distributed with the first pusher 2013; the connecting cylinder 103 is also provided with a second spiral groove 1032 for the second pusher 2014 to be inserted into.

[0099] By setting the second pusher 2014 and the corresponding second spiral groove 1032, dual support can be achieved between the connecting column 108 and the connecting cylinder 103, enhancing the stability and load-bearing capacity of the structure. At the same time, the second pusher 2014 and the first pusher 2013 are centrally symmetrically distributed, which helps to balance the load, reduce single-point stress, and improve the overall durability and reliability of the structure.

[0100] Furthermore, such as Figure 5 As shown, a first a radial bearing 207 is mounted on the first pusher 2013; the inner ring of the first a radial bearing 207 is axially fixed to the first pusher 2013, while its outer ring is engaged with the first helical groove 1031.

[0101] The second pusher 2014 is fitted with a second a radial bearing 208; the inner ring of the second a radial bearing 208 is axially fixed to the second pusher 2014, while its outer ring is engaged with the second helical groove 1032.

[0102] Both the first a radial bearing 207 and the second a radial bearing 208 share the radial load between components, reduce component wear and wobbling caused by radial force, ensure the stability of the transmission process of the first pusher 2013 and the second pusher 2014 in their respective helical grooves, and reduce the risk of failure caused by direct friction and non-ideal fit between components.

[0103] Both the first radial bearing 207 and the second radial bearing 208 can be deep groove ball bearings, and there are no specific restrictions.

[0104] Furthermore, such as Figure 2 as well as Figure 3 As shown, the design of drive component 1 includes an actuator motor 101 and a motor controller 102.

[0105] The motor controller 102 is fixed on the actuator 101 and communicates with the actuator 101, and is used to control the actuator 101 to rotate based on the control signal.

[0106] The rotor shaft of the actuator 101 is connected to the worm gear 106.

[0107] The worm gear 106 has a first b radial bearing 105 and a second b radial bearing 104 fitted at both ends. The inner ring of the first b radial bearing 105 is connected to the worm gear 106, while its outer ring is connected to the housing assembly 5. The inner ring of the second b radial bearing 104 is connected to the worm gear 106, while its outer ring is connected to the housing assembly 5. Taking the end of the worm gear 106 closer to the actuator 101 where the first b radial bearing 105 is fitted, the end farther from the actuator 101 where the second b radial bearing 104 is fitted. The first b radial bearing 105 can be a deep groove ball bearing, while the second b radial bearing 104 can be a needle roller bearing. Those skilled in the art can modify the design according to actual needs without limitation.

[0108] Furthermore, such as Figure 8 As shown, the housing assembly 5 includes a housing 501, a cover plate 502, and an oil pipe connector 503.

[0109] One end of the housing 501 can be detachably connected and installed to the cover plate 502 via hex bolts and locating pins;

[0110] The other end of the housing 501 is detachably connected to the drive assembly 1, specifically by assembly and fixation to the motor controller 102 using hexagonal bolts.

[0111] One end of the oil pipe connector 503 is interference-fitted with the connector hole on the housing 501, and the other end is connected to the lubricant output end (such as connecting to the gearbox lubricant hole).

[0112] Furthermore, such as Figure 5 As shown, the structural design of the shift fork assembly 2 includes a shift fork body 201 and a shift fork shaft 202.

[0113] The shift fork shaft 202 is arranged parallel to the drive shaft assembly 4 and fixedly connected to the housing assembly 5. Specifically, one end of the shift fork shaft 202 is connected to the shaft hole of the housing 501 of the housing assembly 5, and the other end is connected to the shaft hole of the cover plate 502 of the housing assembly 5.

[0114] The shift fork body 201 is mounted on the shift fork shaft 202 and slides along the axial direction of the shift fork shaft 202; the shift fork body 201 is connected to the rotary-linear conversion assembly.

[0115] The shift fork shaft 202 and the shift fork body 201 are fixed together by a transition fit between the first linear bearing 205 and the second linear bearing 206. Specifically:

[0116] The shift fork body 201 has a first a linear bearing 205 and a second a linear bearing 206 mounted at both ends. A first a retaining groove 2011 is provided on the side of the first a linear bearing 205 away from the second a linear bearing 206, which holds a first a retaining spring 203 for fixing the axial position of the first a linear bearing 205. A second a retaining groove 2012 is provided on the side of the second a linear bearing 206 away from the first a linear bearing 205, which holds a second a retaining spring 204 for fixing the axial position of the second a linear bearing 206. The outer rings of the first a linear bearing 205 and the second a linear bearing 206 are connected to the shift fork body 201, while their respective inner rings are connected to the shift fork shaft 202. By using linear bearings to reduce friction and wear, the stability and durability of the shift fork assembly 2 can be improved.

[0117] Furthermore, compared with clutch-type and dog-tooth-type disconnect devices, the sliding sleeve disconnect device has advantages such as simplified structure, convenient operation and low maintenance cost. Therefore, the preferred disconnection and engagement method adopted in this application is the sliding sleeve disconnection and engagement method. Taking this as an example, the design also includes a sliding sleeve assembly 3; the shift fork assembly 2 is connected to the drive shaft assembly 4 through the sliding sleeve assembly 3, and is used to control the disconnection or engagement of the drive shaft assembly 4 by moving the sliding sleeve body 303 of the driving sliding sleeve assembly 3.

[0118] Furthermore, such as Figure 7 As shown, based on the sliding sleeve type engagement and disengagement design, the drive shaft assembly 4 includes a motor drive shaft 401 and a wheel end half shaft 402.

[0119] A first c-radial bearing 403 is installed on the wheel end half-shaft 402; the outer ring of the first c-radial bearing 403 is fixed to the housing 501 of the housing assembly 5, while its inner ring is fixed to the bearing mating surface of the wheel end half-shaft 402. A second c-radial bearing 404 is installed on the motor drive shaft 401; the outer ring of the second c-radial bearing 404 is fixed to the cover plate 502 of the housing assembly 5, while its inner ring is fixed to the bearing mating surface of the motor drive shaft 401. The motor drive shaft 401 and the wheel end half-shaft 402 are also radially fixed and axially limited by a third c-radial bearing 407; the inner ring of the third c-radial bearing 407 is fixed to the drive shaft, while its outer ring is fixed to the wheel end half-shaft 402.

[0120] The axial / radial fixing and limiting of the motor drive shaft 401 and the wheel end half shaft 402 are achieved by the first c-radial bearing 403, the second c-radial bearing 404, and the third c-radial bearing 407. The first c-radial bearing 403, the second c-radial bearing 404, and the third c-radial bearing 407 can be deep groove ball bearings, and there are no specific restrictions.

[0121] like Figure 6 As shown, the design of the sliding sleeve assembly 3 includes a sliding sleeve body 303, a first b retaining ring 301, and a second b retaining ring 302.

[0122] One end of the sliding sleeve body 303 moves axially on the wheel end half shaft 402 via a spline, while the other end moves axially on the motor drive shaft 401 via a spline; the first b retaining ring 301 is fitted into the first b retaining groove 4021 on the wheel end half shaft 402 to restrict the axial movement of one end of the sliding sleeve body 303; the second b retaining ring 302 is fitted into the second b retaining groove 4011 on the motor drive shaft 401 to restrict the axial movement of the other end of the sliding sleeve body 303.

[0123] The shift fork body 201 is axially fixedly connected to the sliding sleeve body 303 (while the bushing 408 body can rotate freely relative to the shift fork body 201). When the sliding sleeve body 303 is driven to move to mesh with the wheel end half shaft 402 and the motor drive shaft 401 at the same time, the motor drive shaft 401 and the wheel end half shaft 402 are powered through the sliding sleeve body 303, and the power of the motor drive shaft 401 can be transmitted to the wheel end half shaft 402 through the sliding sleeve body 303; conversely, when the sliding sleeve body 303 moves to the point where the wheel end half shaft 402 and the motor drive shaft 401 are not meshed, the power is disconnected.

[0124] Furthermore, such as Figure 2 as well as Figure 7 As shown, the design of the drive shaft assembly 4 also includes a first oil seal 405, a second oil seal 406, and a bushing 408 body.

[0125] The outer ring of the first oil seal 405 is fixed in conjunction with the bearing hole of the housing 501 of the housing assembly 5, while its inner ring is fixed in conjunction with the oil seal mating surface of the wheel end half shaft 402; the outer ring of the second oil seal 406 is fixed in conjunction with the bearing hole of the cover plate 502 of the housing assembly 5, while its inner ring is fixed in conjunction with the oil seal mating surface of the motor drive shaft 401; the body of the bushing 408 is connected to the wheel end half shaft 402 and is axially limited by the bushing 408 groove of the housing 501 of the housing assembly 5.

[0126] The above provides a detailed description of an electronic disconnection device provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An electronic disconnection device, characterized in that It includes a housing assembly (5), a drive assembly (1), a transmission assembly (6), a shift fork assembly (2), and a drive shaft assembly (4); The drive shaft assembly (4) is mounted on the housing assembly (5); The shift fork assembly (2) is mounted on the housing assembly (5) and connected to the drive shaft assembly (4); The drive assembly (1) is connected to the shift fork assembly (2) through the transmission assembly (6) and is used to drive the shift fork body (201) of the shift fork assembly (2) to move along the axial direction of the drive shaft assembly (4) so ​​as to drive the drive shaft assembly (4) to disconnect or engage. The transmission assembly (6) includes a rotary-rotation conversion assembly and a rotary-linear conversion assembly; The rotary-rotation conversion assembly includes a worm gear (107) and a worm (106). The drive assembly (1) is connected to the worm gear (106) and is used to drive the worm gear (106) to rotate; The worm gear (107) is rotatably mounted on the housing assembly (5) and meshes with the worm (106); The rotary-linear conversion assembly is connected between the worm gear (107) and the shift fork assembly (2) to convert the rotational motion of the worm gear (107) into the linear motion of the shift fork assembly (2).

2. An electronic disconnect device according to claim 1, wherein, The rotary-linear conversion assembly includes a connecting cylinder (103) and a connecting column (108); The connecting cylinder (103) is coaxially connected to one side of the worm gear (107) and is provided with a first spiral groove (1031). The connecting post (108) is connected to the fork assembly (2) and can extend movably into the connecting cylinder (103). The connecting post (108) is provided with a first pusher (2013) that engages with the first spiral groove (1031) and slides along the spiral.

3. An electronic disconnect device according to claim 2, wherein, The connecting column (108) is also provided with a second pusher (2014), which is symmetrically distributed with the first pusher (2013) at the center; The connecting cylinder (103) is also provided with a second spiral groove (1032) for the second pusher (2014) to be inserted into.

4. An electronic disconnect device according to claim 3, wherein, The first pusher (2013) is fitted with a first a radial bearing (207); The inner ring of the first radial bearing (207) is axially fixed to the first pusher (2013), while its outer ring is engaged with the first helical groove (1031); The second promotion (2014) is fitted with a second a radial bearing (208); The inner ring of the second radial bearing (208) is axially fixed to the second pusher (2014), while its outer ring is engaged with the second helical groove (1032).

5. An electronic disconnect device according to claim 1, wherein, The drive assembly (1) includes an actuator motor (101) and a motor controller (102). The motor controller (102) is connected to the actuator (101) and is used to control the actuator (101) to perform rotational motion based on control signals; The rotor shaft of the actuator (101) is connected to the worm (106); The worm (106) is fitted with a first b radial bearing (105) and a second b radial bearing (104) at both ends. The inner ring of the first radial bearing (105) is connected to the worm (106), while its outer ring is connected to the housing assembly (5). The inner ring of the second b radial bearing (104) is connected to the worm (106), while its outer ring is connected to the housing assembly (5).

6. An electronic disconnect device according to claim 5, wherein, The shift fork assembly (2) includes a shift fork body (201) and a shift fork shaft (202); The shift fork shaft (202) is arranged parallel to the drive shaft assembly (4) and is fixedly connected to the housing assembly (5); The shift fork body (201) is mounted on the shift fork shaft (202) and slides in cooperation with the shift fork shaft (202) along the axial direction of the shift fork shaft (202); The shift fork body (201) is connected to the rotary-linear conversion assembly; The shift fork body (201) is provided with a first a linear bearing (205) and a second a linear bearing (206) installed at both ends. The shift fork body (201) has a first a retaining groove (2011) on the side of the first a linear bearing (205) away from the second a linear bearing (206), which is fitted with a first a retaining spring (203) for fixing the axial position of the first a linear bearing (205). The shift fork body (201) has a second a retaining groove (2012) on the side of the second a linear bearing (206) away from the first a linear bearing (205), which is fitted with a second a retaining spring (204) for fixing the axial position of the second a linear bearing (206). The outer rings of the first linear bearing (205) and the second linear bearing (206) are connected to the fork body (201), while their respective inner rings are connected to the fork shaft (202).

7. An electronic disconnect device according to claim 1, wherein, It also includes the sliding sleeve assembly (3); The shift fork assembly (2) is connected to the drive shaft assembly (4) via the sliding sleeve assembly (3) and is used to control the drive shaft assembly (4) to disconnect or engage by driving the sliding sleeve body (303) of the sliding sleeve assembly (3) to move.

8. An electronic disconnect device according to claim 7, wherein, The drive shaft assembly (4) includes a motor drive shaft (401) and a wheel end half shaft (402). A first c-radial bearing (403) is installed on the wheel end half shaft (402). The outer ring of the first c radial bearing (403) is fixed to the housing assembly (5), while its inner ring is fixed to the bearing mating surface of the wheel end half shaft (402); A second radial bearing (404) is mounted on the motor drive shaft (401). The outer ring of the second c radial bearing (404) is fixed to the housing assembly (5), while its inner ring is fixed to the bearing mating surface of the motor drive shaft (401). The motor drive shaft (401) and the wheel end half shaft (402) are further radially fixed and axially limited by a third c radial bearing (407); The inner ring of the third c radial bearing (407) is fixed to the drive shaft, while its outer ring is fixed to the wheel end half shaft (402). The sliding sleeve assembly (3) includes a sliding sleeve body (303), a first b retaining ring (301), and a second b retaining ring (302). One end of the sliding sleeve body (303) moves axially on the wheel end half shaft (402) via a spline, while the other end moves axially on the motor drive shaft (401) via a spline. The first b retaining ring (301) is fitted into the first b retaining groove (4021) on the wheel end half shaft (402) to restrict the axial movement of one end of the sliding sleeve body (303); The second b retaining ring (302) is fitted into the second b retaining groove (4011) on the motor drive shaft (401) to restrict the axial movement of the other end of the sliding sleeve body (303).

9. An electronic disconnect device according to claim 8, wherein, The drive shaft assembly (4) also includes a first oil seal (405), a second oil seal (406), and a bushing (408) body; The outer ring of the first oil seal (405) is fixed to the bearing hole of the housing assembly (5), while its inner ring is fixed to the oil seal mating surface of the wheel end half shaft (402). The outer ring of the second oil seal (406) is fixed to the bearing hole of the housing assembly (5), while its inner ring is fixed to the oil seal mating surface of the motor drive shaft (401). The bushing (408) body is connected to the wheel end half shaft (402) and is axially limited by the bushing (408) groove of the housing assembly (5).

10. An electronic disconnect device according to claim 1, wherein, The housing assembly (5) includes a housing (501), a cover plate (502), and an oil pipe joint (503); One end of the housing (501) is detachably connected to the cover plate (502); The other end of the housing (501) is detachably connected to the drive assembly (1); One end of the oil pipe connector (503) is interference-fitted with the connector hole on the housing (501), and the other end is connected to the lubricant output end.

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