Synchronization assembly, transmission device, driving system and vehicle

Abstract

The invention relates to a synchronization assembly, a transmission device, a driving system and a vehicle, the synchronization assembly is used for being arranged on a transmission shaft and selectively jointed with a transmission gear which is hollowly sleeved on the transmission shaft, the synchronization assembly comprises a joint part which is used for being sleeved on the transmission shaft and is provided with a joint component capable of axially moving, and the joint component comprises a first magnet; and a coil unit disposed on a side of the joint portion in an axial direction, the coil unit including an electromagnetic coil designed to drive the first magnet in the axial direction after energization. According to the technical scheme, the synchronous assembly is driven by electromagnetism, gear shifting response is rapid, power transmission is stable, operation is convenient and reliable, the synchronous assembly is directly arranged on the transmission shaft, occupied space is small, the weight is low, a high-pressure oil way can be omitted, and the overall power density of the gear shifting structure is optimized.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle drive technology, and in particular to a synchronization component, a transmission device, a drive system and a vehicle. Background Art

[0002] The multi-gear shifting of the transmission in the vehicle drive system is usually achieved through the interaction between the shifting gear sets and synchronizers.

[0003] In the related art, synchronizers combined with shift gear sets can be divided into hydraulic type, shift motor type, mechanical manual type, etc. according to the different sources of their execution force. Among them, the hydraulic module layout of the hydraulic type will increase the risk of leakage, and its air tightness and shift speed are relatively weak. Although the shift motor type does not need to arrange a high-pressure oil circuit to avoid the risk of high-pressure sealing, the layout of the shift motor and the shift hub occupies too much assembly space, which is not conducive to improving power density. The mechanical manual type requires frequent manual shifting of gears, and has poor automaticity and auxiliary functions, which can easily cause driver fatigue. Summary of the invention

[0004] The purpose of the present disclosure is to provide a synchronization assembly, a transmission device, a drive system and a vehicle to at least partially solve the problems existing in the above-mentioned related technologies.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a synchronization component, which is used to be arranged on a transmission shaft and selectively engaged with a transmission gear that is loosely sleeved on the transmission shaft. The synchronization component includes: a coupling portion, which is used to be sleeved on the transmission shaft and has a coupling component that can move axially, and the coupling component includes a first magnet; and a coil unit, which is arranged on the axial side of the coupling portion, and the coil unit includes an electromagnetic coil, and the electromagnetic coil is designed to drive the first magnet axially after power is supplied.

[0006] Optionally, the coil unit further includes a second magnet, and the second magnet is designed to generate an axial force with the first magnet.

[0007] Optionally, there are two coil units, which are disposed on both sides of the joint portion, and the magnetic pole directions of the second magnets of the two coil units are the same.

[0008] Optionally, the electromagnetic coil and the second magnet are respectively annular in shape, the electromagnetic coil and the second magnet are coaxially arranged, and the electromagnetic coil is sleeved on the outside of the second magnet.

[0009] Optionally, the coil unit further comprises a coil support, and the coil support is used to be sleeved on the outer side of the transmission shaft at intervals. Wherein, an annular groove is formed on one side of the coil support facing the joint portion, and the second magnet and the electromagnetic coil are respectively arranged in the annular groove.

[0010] Optionally, the coil unit further comprises a pressing plate, which is detachably connected to the coil support and is used to confine the second magnet and the electromagnetic coil in the annular groove.

[0011] Optionally, there are two coil units, which are disposed on both sides of the joint, and the synchronization component includes a connecting beam connecting the coil supports of the two coil units.

[0012] Optionally, the engagement portion comprises a hub wheel, the hub wheel is used to be sleeved on the transmission shaft and is axially limited, a key tooth is formed on the outer periphery of the hub wheel, and the engagement member comprises an engagement sleeve, the engagement sleeve is sleeved on the outer side of the hub wheel and cooperates with the key tooth through a tooth groove, Wherein, the first magnet is fixed on the outer periphery of the coupling sleeve.

[0013] Optionally, the transmission gear has an axially protruding toothed ring, a first engaging tooth is formed on the outer periphery of the toothed ring, and the tooth groove is designed to match the first engaging tooth. Wherein, at least one of the first engaging tooth and the tooth groove has a guiding inclined surface for facilitating matching with the other.

[0014] Optionally, the engagement member further comprises a synchronizing ring located between the gear ring and the hub wheel, and the end faces of the synchronizing ring and the gear ring that are close to each other are conical surfaces, so that the two can be frictionally locked. The outer periphery of the synchronizer ring is formed with second engaging teeth, the tooth groove is designed to match with the second engaging teeth, and at least one of the second engaging teeth and the tooth groove has a guiding inclined surface for facilitating matching with the other.

[0015] Optionally, a first groove is formed on the outer periphery of the hub wheel, a second groove corresponding to the position of the first groove is formed on the inner periphery of the coupling sleeve, and the coupling portion further includes a limit block, which is connected to the first groove via an elastic member, and the elastic member is used to push the limit block radially outward.

[0016] Optionally, the position of the limit block near the axial end is a limit bevel, so that when the coupling sleeve moves axially to engage with the transmission gear, the limit block pops out of the first groove and the limit bevel abuts against the axial end of the coupling sleeve.

[0017] Optionally, the engaging portion further includes a pin, the pin is radially inserted into the first groove, and the elastic member is a spring sleeved on the pin.

[0018] Optionally, a slot is radially arranged on the outer circumference of the coupling sleeve, and the first magnet is embedded in the slot.

[0019] Optionally, the engaging member further comprises a magnet bracket, wherein the magnet bracket comprises two mounting plates respectively inserted into the slots, and the two mounting plates clamp the first magnet from both axial sides.

[0020] Optionally, the mounting plate includes two assembled semi-annular structures.

[0021] Optionally, there are a plurality of first magnets, which are arranged around the outer circumference of the coupling sleeve, and a separator is provided on the magnet bracket for separating the plurality of first magnets.

[0022] Optionally, the coupling member further comprises a magnetic isolation ring arranged on the magnet bracket, the magnetic isolation ring is an annular structure, and the magnetic isolation ring is sleeved on the outer side of the first magnet.

[0023] A second aspect of the present disclosure provides a transmission device, comprising: a transmission shaft, including an input shaft and an output shaft; a transmission gear, including a driving gear arranged on the input shaft and a driven gear arranged on the output shaft; and a synchronization assembly provided according to the first aspect of the present disclosure, wherein the synchronization assembly is arranged on the input shaft or the output shaft.

[0024] Optionally, the driving gear includes a first driving gear and a second driving gear, and the driven gear includes a first driven gear meshing with the first driving gear and a second driven gear meshing with the second driving gear. Wherein, when the synchronization component is installed on the input shaft, the synchronization component is arranged between the first driving gear and the second driving gear, and the synchronization component includes two coil units, which are arranged on both sides of the joint; when the synchronization component is installed on the output shaft, the synchronization component is arranged between the first driven gear and the second driven gear, and the synchronization component includes two coil units, which are arranged on both sides of the joint.

[0025] A third aspect of the present disclosure provides a drive system, comprising the transmission device provided by the second aspect of the present disclosure.

[0026] A fourth aspect of the present disclosure provides a vehicle, comprising the drive system provided by the third aspect of the present disclosure.

[0027] Through the above technical solution, the joint part of the synchronization component has a magnet, and the axial side of the joint part is provided with a coil unit. The electromagnetic coil in the coil unit can drive the joint part to move along the axial direction of the transmission shaft after power is turned on, so that the synchronization component as a whole can selectively engage with the transmission gear sleeved on the transmission shaft, and the gear is engaged after engagement, so as to realize the gear switching. Among them, the synchronization component adopts electromagnetic drive, with rapid gear shift response, smooth power transmission, convenient and reliable operation, and the synchronization component is directly arranged on the transmission shaft, which occupies a small space and is light in weight. The high-pressure oil circuit can be omitted, and the overall power density of the shifting structure is optimized.

[0028] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a schematic structural diagram of a transmission device according to an exemplary embodiment.

[0030] Figure 2 is an exploded view of a synchronization component according to an exemplary embodiment.

[0031] Figure 3 is a schematic structural diagram of a coil unit according to an exemplary embodiment.

[0032] Figure 4 is a schematic structural diagram of a coil unit according to an exemplary embodiment.

[0033] Figure 5 is a schematic structural diagram of a joint portion according to an exemplary embodiment.

[0034] Figure 6 It is a schematic structural diagram of a coupling sleeve according to an exemplary embodiment.

[0035] Figure 7 is a schematic structural diagram of a joining component according to an exemplary embodiment.

[0036] Figure 8 It is a schematic structural diagram of a transmission gear according to an exemplary embodiment.

[0037] Fig. 9 is a schematic structural diagram of a synchronization ring according to an exemplary embodiment.

[0038] Fig.10 It is a schematic structural diagram of a limit block according to an exemplary embodiment.

[0039] Fig.11 is a schematic structural diagram of a magnet bracket according to an exemplary embodiment.

[0040] Fig.12 is a schematic structural diagram of a first magnet according to an exemplary embodiment.

[0041] Fig.13 It is a schematic structural diagram of a magnetic isolation ring according to an exemplary embodiment.

[0042] Description of Reference Numerals 1-transmission shaft, 11-input shaft, 12-output shaft, 2-transmission gear, 21-driving gear, 211-first driving gear, 212-second driving gear, 22-driven gear, 221-first driven gear, 222-second driven gear, 23-tooth ring, 231-first engaging tooth, 2311 / 31132-guide ramp, 2312 / 31133-conical surface, 3-synchronizing assembly, 31-engaging portion, 311-engaging member, 3111-first magnet, 3112-engaging sleeve, 31121-tooth groove, 3113-synchronizing ring, 31131-second engaging tooth, 3114-magnet bracket, 31141-mounting sheet, 3 1142-partitioning piece, 31143-positioning hole, 3115-magnetic isolation ring, 31151-through hole, 31152-limiting pin, 3116-second groove, 312-hub wheel, 3121-key tooth, 3122-first groove, 31221-jack, 313-limiting block, 3131-limiting inclined plane, 3132-upper bottom surface, 3133-lower bottom surface, 314-elastic member, 315-pin, 32-coil unit, 321-electromagnetic coil, 322-second magnet, 323-coil bracket, 3231-annular groove, 3232-support foot, 3233-connecting bolt, 324-pressure plate, 33-connecting beam, 4-circlip, 5-end cover. DETAILED DESCRIPTION

[0043] The specific embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0044] In the present disclosure, unless otherwise stated, directional words such as "inside" and "outside" refer to the inside and outside of the relevant parts relative to their own contours when actually used, and "axial" is defined according to the extension direction of the transmission shaft 1 and various components arranged on the transmission shaft 1 along the transmission shaft 1. Figure 2In addition, the attributives "first", "second", etc. used in the present disclosure are to distinguish one element from another element, and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0045] A first aspect of an embodiment of the present disclosure provides a synchronization component, referring to Figures 1 to 13 The synchronous assembly 3 is used to be arranged on the transmission shaft 1 and selectively engaged with the transmission gear 2 that is loosely sleeved on the transmission shaft 1. The synchronous assembly 3 includes a joint 31 and a coil unit 32. The joint 31 can be used to be sleeved on the transmission shaft 1, and can have a joint member 311 that can move axially, and the joint member 311 can include a first magnet 3111. The coil unit 32 can be arranged on the axial side of the joint 31, and the coil unit 32 can include an electromagnetic coil 321, which can be designed to drive the first magnet 3111 in the axial direction after power is turned on.

[0046] It should be noted here that the "empty sleeve" connection between the transmission gear 2 and the transmission shaft 1 means that the transmission gear 2 can be connected to the transmission shaft 1 in a circumferentially rotatable manner, and the "empty sleeve" connection method can be achieved by setting a bearing in the tooth hole of the transmission gear 2 and sleeved on the transmission shaft 1. The "sleeve connection" between the joint 31 and the transmission shaft 1 can be a "fixed sleeve connection" or can be called a "torsion-resistant sleeve connection", which means that the joint 31 and the transmission shaft 1 have a circumferentially locked connection and can move synchronously, wherein the "sleeve connection" connection method can be achieved by setting a spline or other connecting structure between the two, or the two of the empty sleeves can be circumferentially locked by an external structure. In the embodiments of the present disclosure, the above-mentioned specific connection methods of "empty sleeve" and "sleeve connection" are only for illustration, and relevant technical personnel in the field can also use other connection structures with the same or similar functions to achieve them, which will not be repeated here, and the "empty sleeve" or "sleeve connection" that appears in the subsequent description in this article can also be understood as having the same connection method as above.

[0047] In the above embodiment, the joint part 31 of the synchronization component 3 has a joint member, which can move in the axial direction of the transmission shaft 1. The coil unit 32 of the synchronization component 3 is arranged on the axial side of the joint part 31, and the axial movement of the joint member 311 on the transmission shaft 1 can be controlled. Among them, a first magnet 3111 can be provided in the joint part 31, and the first magnet 3111 can be a permanent magnet material. The coil unit 32 can be provided with an electromagnetic coil 321, and the current flowing through the electromagnetic coil 321 can be controlled. The magnitude and direction of the current generated between it and the first magnet 3111 generates an attractive force or a repulsive force, thereby driving the joint member 311 to move axially. When the joint member 311 is engaged with the transmission gear 2, the transmission gear 2 that is sleeved on the transmission shaft 1 can transfer power to the transmission shaft 1 through the joint part 31 that is sleeved with the transmission shaft 1, and then the transmission shaft 1 outputs the power to realize the transmission and switching of power. In the application scenario where the synchronization component 3 needs to perform gear shifting, the synchronization component 3 can realize the switching of gears through the above-mentioned electromagnetic drive method, and the operation is convenient and stable.

[0048] Through the above technical solution, the engaging member 311 of the engaging part 31 in the synchronous assembly 3 has a magnet, and the axial side of the engaging part 31 is provided with a coil unit 32. The electromagnetic coil 321 in the coil unit 32 can drive the engaging member 311 to move along the axial direction of the transmission shaft 1 after being energized, so that the synchronous assembly 3 as a whole can selectively engage with the transmission gear 2 that is loosely sleeved on the transmission shaft 1 to achieve the shifting of the gears. Among them, the synchronous assembly 3 adopts electromagnetic drive, with rapid gear shift response, stable power transmission, convenient and reliable operation, and the synchronous assembly 3 is directly arranged on the transmission shaft, which occupies a small space and is light in weight. The high-pressure oil circuit can be omitted, and the overall power density of the shifting structure is optimized.

[0049] In some embodiments, reference Figures 2 to 4, the coil unit 32 may also include a second magnet 322, and the second magnet 322 may be designed to generate an axial force with the first magnet 3111. In this embodiment, the second magnet 322 may also be a permanent magnet material, for example, conventional magnetic materials such as ferrite and neodymium magnets may be selected, and the second magnet 322 may have an axial force with the first magnet 3111. Wherein, when the coil unit 32 is arranged on the side of the joint 31 facing the transmission gear 2, the axial force may be an attractive force, so that after the joint 31 is engaged with the transmission gear 2 and the electromagnetic coil 321 is powered off, the second magnet 322 can always provide a certain adsorption effect on the first magnet 3111, to ensure the stable engagement between the joint 31 and the transmission gear 2, to prevent the two from moving away, and to improve the safety of the synchronization assembly 3. Similarly, when the coil unit 32 is arranged on the side of the joint part 31 away from the transmission gear 2, the axial force can also be a repulsive force, so as to provide a repulsive force to push the joint part 31 toward the transmission gear 2 when the joint part 31 is engaged with the transmission gear 2, and to ensure the stable engagement between the joint part 31 and the transmission gear 2. At the same time, when the joint part 31 is disengaged from the engagement state with the transmission gear 2, the driving force of the electromagnetic coil 321 after being energized should drive the joint part 31 to move to a sufficiently far distance, so as to avoid the force between the first magnet 3111 and the second magnet 322 affecting the stability of the position of the joint part 31 after the electromagnetic coil 321 is powered off again. There are many ways to make the joint part 31 remain stable in the neutral state after being disengaged from the transmission gear 2, for example, it can be achieved by using the limiting guide function of the limit block 313 described below.

[0050] It should be noted that the above two configurations are both for applications where the coil unit 32 is a single unit, and only the case where the joint 31 is driven in one direction is considered.

[0051] For example, refer to Figures 2 to 4 , the number of coil units 32 can be two, and the two coil units 32 can be respectively arranged on both sides of the joint 31, and the magnetic pole directions of the second magnets 322 of the two coil units 32 can be the same. In this embodiment, the coil units 32 are respectively arranged on both sides of the joint 31, and the joint 31 can be driven respectively on both sides of the axial direction. By setting the magnetic pole directions of the second magnets 322 of the two coil units 32 to be the same, after the electromagnetic coil 321 is powered off, the driving forces of the two second magnets 322 on both sides of the joint 31 act on the first magnet 3111 in opposite directions. When the two opposite driving forces are of the same magnitude, the first magnet 3111 can be easily controlled to be in an axially centered equilibrium position to ensure the stability of the joint 31 when it is in the middle position.

[0052] In other embodiments, reference Figures 2 to 4The number of the transmission gears 2 can be two, and they can be arranged on both sides of the joint 31, wherein the end of the second magnet 322 facing the first magnet 3111 can provide attraction to the first magnet 3111. In this embodiment, the second magnet 322 and the first magnet 3111 are mutually attractive, and the two second magnets 322 located on both sides of the first magnet 3111 can simultaneously provide attraction to the first magnet 3111 in the middle position. When the joint 31 is engaged with the transmission gear 2 on either side, the coil unit 32 on that side can provide a constant adsorption effect to the joint 31 after the electromagnetic coil 321 is powered off, so as to prevent the joint 31 from being separated from the transmission gear 2 during the synchronous movement, thereby ensuring the engagement stability between the joint 31 and the transmission gear 2.

[0053] For example, refer to Figures 2 to 4 , the electromagnetic coil 321 and the second magnet 322 can be annular respectively, the electromagnetic coil 321 and the second magnet 322 can be coaxially arranged, and the electromagnetic coil 321 can be sleeved on the outside of the second magnet 322. In this embodiment, the electromagnetic coil 321 and the second magnet 322 are coaxially arranged annular structures, the inner diameter of the electromagnetic coil 321 is at least not less than the outer diameter of the second magnet 322, the electromagnetic coil 321 can be sleeved on the outside of the second magnet 322, and the two do not overlap in the axial direction, which can avoid the magnetic force influence of the electromagnetic coil 321 and the second magnet 322 in the axial direction. At the same time, the second magnet 322 can be hidden in the inner ring of the electromagnetic coil 321, which can reduce the space occupied in the axial direction, reduce the length of the coil unit 32, and realize the lightweight design of the synchronization component 3.

[0054] For example, refer to Figures 2 to 4 The coil unit 32 may also include a coil support 323, which may be used to be sleeved on the outside of the transmission shaft 1 at intervals, wherein the coil support 323 may be provided with an annular groove 3231 on one side facing the joint 31, and the second magnet 322 and the electromagnetic coil 321 may be respectively arranged in the annular groove 3231, and the annular groove 3231 may be used to stably assemble the second magnet 322 and the electromagnetic coil 321 to prevent them from shaking or falling off. At the same time, the joint 31 may be arranged in the interval of the coil support 323, and the coil support 323 may provide positioning installation of the coil unit 32 on both sides of the joint 31.

[0055] For example, refer to Figures 2 to 4 The coil unit 32 may further include a pressing plate 324, which may be detachably connected to the coil support 323, and is used to restrict the second magnet 322 and the electromagnetic coil 321 in the annular groove 3231. In this embodiment, the pressing plate 324 may be connected to the coil support 323 by snapping, or may be bolted to the coil support 323 by bolts, for example. Figure 3 and Figure 4In the figure, the coil support 323 may be provided with a support foot 3232 opposite to the pressure plate 324, and the support foot 3232 may be provided with a bolt hole for fixing the pressure plate 324 and the coil support 323 through the two opposite support feet 3232 after the pressure plate 324 restricts the second magnet 322 and the electromagnetic coil 321 in the annular groove 3231.

[0056] In other embodiments, reference Figure 4 The coil bracket 323 may also be provided with a support leg 3232 perpendicular to the end face of the coil bracket 323, so as to fix the coil bracket 323 with the external equipment structure through the support leg 3232. When the electromagnetic coil 321 is electrically connected to the power supply facility using a lead wire, the support leg 3232 may also be used to fix or guide the lead wire, thereby improving the stability and safety of the coil unit 32 and making the spatial layout compact and reasonable.

[0057] For example, refer to Figures 2 to 4 The number of coil units 32 can be two, and the two coil units 32 can be respectively arranged on both sides of the joint 31. The synchronization component 3 can include a connecting beam 33 connecting the coil supports 323 of the two coil units 32, which is used to stably connect the two coil units 32 on both sides of the joint 31 in the axial direction, thereby improving the overall stability of the synchronization component 3.

[0058] In other embodiments, reference Figure 3 and Figure 4 The connecting beam 33 can be constructed as a concave structure, and the connecting beam has two radially protruding walls, and the two protruding walls can be respectively provided with mounting holes opposite to each other. The connecting beam 33 can respectively bolt the mounting holes to the supporting feet of the coil bracket 323 on both sides of the joint 31 through connecting bolts, so that the connecting beam 33 can fix the coil bracket 323 on both sides of the joint 31.

[0059] In some embodiments, reference Figure 2 , Figure 5 and Figure 6 The coupling portion 31 may include a hub wheel 312, which can be used to be sleeved on the transmission shaft 1 and be axially limited. The outer periphery of the hub wheel 312 may be formed with key teeth 3121. At the same time, the coupling member 311 may include a coupling sleeve 3112, which can be sleeved on the outer side of the hub wheel 312 and cooperate with the key teeth 3121 through the tooth groove 31121, wherein the first magnet 3111 can be fixed on the outer periphery of the coupling sleeve 3112.

[0060] In the above embodiment, the transmission shaft 1 is sleeved with a hub wheel 312, which is axially limited on the transmission shaft 1. The hub wheel 312 can rotate synchronously with the transmission shaft 1 in the circumferential direction but cannot move relative to the transmission shaft 1 in the axial direction. The engagement sleeve 3112 in the engagement member 311 can be sleeved on the outer side of the hub wheel 312. The engagement sleeve 3112 can be matched with the key teeth 3121 of the hub wheel 312 through the tooth grooves 31121, and the two can rotate synchronously in the circumferential direction. At the same time, the outer periphery of the engagement sleeve 3112 is fixed with a first magnet 3111. Since the hub wheel 312 is limited in the axial direction, the engagement sleeve 3112 can move along the axial direction of the hub wheel 312 under the driving action between the first magnet 3111 and the coil unit 32.

[0061] In the present application, the transmission gear 2, the hub wheel 312 and other components which are sleeved on the transmission shaft 1 and do not produce relative displacement with the transmission shaft 1 along the axial direction can be limited by the axial limiter, for example, referring to Figure 1 The axial end side of the transmission gear 2 may be provided with a retaining spring groove, in which the retaining spring 4 may be disposed, thereby generating an axial limit to the transmission gear 2. Similarly, the axial limit method for the hub wheel 312 and other components may be the same or similar to the limit method of the retaining spring 4 described above.

[0062] In other embodiments, the hub wheel 312 can be connected to the transmission shaft 1 via a spline. The outer circumferential surface of the transmission shaft 1 can be provided with an external spline, and the inner circumferential surface of the hub wheel 312 can be provided with an internal spline. After the two are key-connected, the hub wheel 312 can form a socket connection with the transmission shaft 1, and at this time, the hub wheel 312 can rotate synchronously with the transmission shaft 1 in the circumferential direction.

[0063] For example, refer to Figure 7 and Figure 8 The transmission gear 2 may have an axially protruding tooth ring 23, the outer periphery of the tooth ring 23 may be formed with a first engaging tooth 231, and the tooth groove 31121 may be designed to be a shape that can be adapted to the first engaging tooth 231, wherein at least one of the first engaging tooth 231 and the tooth groove 31121 may have a guiding inclined surface that facilitates adaptation to the other.

[0064] In the above embodiment, a gear ring 23 may be axially protruded on one side of the transmission gear 2 facing the coupling portion 31, and a first coupling tooth 231 which can be adapted to the shape of the tooth groove 31121 of the coupling sleeve 3112 is formed on the outer periphery of the gear ring 23. When the coupling sleeve 3112 is driven by the coil unit 32 and moves axially, it can move until the first coupling tooth 231 is docked with the tooth groove 31121. At this time, the coupling sleeve 3112 can form synchronous rotation with the transmission gear 2, thereby realizing the switching of gears. In order to facilitate the docking between the gear ring 23 of the transmission gear 2 and the engagement sleeve 3112, a guide slope 2311 may be formed on the side of the first engagement tooth 231 facing the engagement portion 31. The guide slope 2311 may be formed by the transmission gear 2 gradually shrinking in the direction of the engagement portion 31, so that when the engagement sleeve 3112 engages with the first engagement tooth 231, it may first contact the guide slope 2311. After the rotation speeds of the two are synchronized, the continuous axial movement of the engagement sleeve 3112 may allow the first engagement tooth 231 to be inserted into the tooth groove 31121 under the guidance of the guide slope 2311, so that the engagement sleeve 3112 and the transmission gear 2 are docked. In other embodiments, the guide slope may also be provided at the edge of the tooth groove 31121. When the engagement sleeve 3112 moves axially toward the transmission gear 2, the guide slope on the tooth groove 31121 may guide the engagement sleeve 3112 to dock with the first engagement tooth 231, and the above-mentioned beneficial effect of facilitating the synchronous docking between the engagement sleeve 3112 and the transmission gear 2 may also be achieved.

[0065] For example, refer to Figure 7 and Fig. 9 The engaging member 311 may further include a synchronizer ring 3113 located between the gear ring 23 and the hub wheel 312, and the end surfaces of the synchronizer ring 3113 and the gear ring 23 that are close to each other may be a conical surface 31133 that is axially recessed toward the inside of the synchronizer ring 3113 and a conical surface 2312 that is axially protruding toward one side of the gear ring 23, so that the synchronizer ring 3113 and the gear ring 23 can be frictionally locked. The outer periphery of the synchronizer ring 3113 may be formed with a second engaging tooth 31131, and the tooth groove 31121 may be designed to match the second engaging tooth 31131, and at least one of the second engaging tooth 31131 and the tooth groove 31121 may have a guiding inclined surface that is convenient for matching with the other.

[0066] In the above embodiment, a synchronizer ring 3113 may be further provided between the hub wheel 312 and the gear ring 23 of the transmission gear 2, which is used to engage with the engaging portion 31 before the engaging sleeve 3112 engages with the transmission gear 2, and utilizes the rotational friction between the conical surface 2312 and the conical surface 31133 to lock with each other, so that the rotation speeds of the synchronizer ring 3113 and the gear ring 23 tend to be synchronized, thereby preventing the engagement sleeve 3112 from directly docking with the gear ring 23 and causing excessive speed difference between the two, thereby preventing the occurrence of tooth hitting, and preventing the tooth groove 31121 of the engagement sleeve 3112 and the first engagement tooth 231 of the gear ring 23 from being damaged by tooth hitting collision. The speed synchronization between the synchronizer ring 3113 and the transmission gear 2 can increase the service life of the engagement member 311, and there will be no obvious tooth hitting feeling during the gear shifting and docking process, and the gear shifting action is smooth and smooth, thereby improving the user experience.

[0067] At the same time, the outer periphery of the synchronizer ring 3113 is provided with a second engaging tooth 31131, and a gradually tapering guiding slope 31132 may also be provided on the side of the second engaging tooth 31131 facing the engaging portion 31. The guiding slope 31132 has a similar function to the guiding slope 2311, which makes it easier for the synchronizer ring 3113 to dock with the engaging sleeve 3112, and is beneficial to the docking action of the two. Similarly, the guiding slope may also be provided on the edge of the tooth groove 31121 of the engaging sleeve 3112 facing the transmission gear 2, which may also make the docking action between the engaging sleeve 3112 and the synchronizer ring 3113 smooth and convenient, which will not be described in detail here.

[0068] For example, refer to Figure 5 , Figure 6 and Fig.10 The outer circumference of the hub wheel 312 may be provided with a first groove 3122, the inner circumference of the coupling sleeve 3112 may be provided with a second groove 3116 corresponding to the position of the first groove 3122, and the coupling portion 31 may further include a stopper 313, which may be connected to the first groove 3122 via an elastic member 314, and the elastic member 314 may be used to push the stopper 313 radially outward. In this embodiment, a stopper 313 may be provided between the first groove 3122 of the hub wheel 312 and the second groove 3116 of the coupling sleeve 3112, and the stopper 313 may be moved radially in the first groove 3122 via the elastic member 314. Among them, the limit block 313 can be pushed to the inner periphery of the coupling sleeve 3112 by the elastic member 314, and when the limit block 313 is at least partially inserted into the second groove 3116, the hub wheel 312 and the coupling sleeve 3112 can be stably engaged, and the limit block 313 can form an axial limit between the coupling sleeve 3112 and the hub wheel 312 to prevent the two from disengaging after engagement.

[0069] For example, refer to Figure 5 , Figure 6 and Fig.10The position of the limit block 313 near the axial end can be a limit bevel 3131, so that when the coupling sleeve 3112 moves axially to engage with the transmission gear 2, the limit block 313 can pop out of the first groove 3122 and the limit bevel 3131 can abut against the axial end of the coupling sleeve 3112.

[0070] In the above embodiment, the stopper 313 may have an upper bottom surface 3132, a lower bottom surface 3133, and a stopper inclined surface 3131 with a certain inclination angle located between the upper bottom surface 3132 and the lower bottom surface 3133. The lower bottom surface 3133 is adapted to the groove surface shape of the first groove 3122, and when the coupling sleeve 3112 moves axially relative to the hub wheel 312, the upper bottom surface 3132 of the stopper 313 may slide on the inner circumferential surface of the coupling sleeve 3112. When the coupling sleeve 3112 is located at the neutral balance position, the limit block 313 has an initial position. At this time, the upper bottom surface 3132 of the limit block 313 can be inserted into the second groove 3116 and abut against the edge of the second groove 3116 through the limit inclined surfaces 3131 on both sides. The limit block 313 can form a stable snap-fit ​​connection with the second groove 3116, so that the coupling sleeve 3112 can be axially positioned relative to the hub wheel 312 to prevent the coupling sleeve 3112 from shaking or shifting when it is in the neutral position, thereby improving the positioning accuracy of the coupling sleeve 3112 and ensuring the stability of the coupling sleeve 3112 in the neutral position. When the coupling sleeve 3112 moves axially under the drive of the coil unit 32, the limit block 313 deviates from the initial position. At this time, the upper bottom surface 3132 of the limit block 313 can move axially along the inner circumferential surface of the coupling sleeve 3112, and when the coupling sleeve 3112 moves axially to engage with the transmission gear 2, the limit block 313 can use the guiding effect of the limiting slope 3131 to make the coupling sleeve 3112 slide along the inclined surface of the limiting slope 3131 until the limit block 313 pops out of the first groove 3122. The limit block 313 can provide a certain axial supporting force for the coupling sleeve 3112 by pressing the limiting slope 3131 against the axial end of the coupling sleeve 3112, and push the coupling sleeve 3112 toward the engaged transmission gear 2 side, thereby preventing the coupling sleeve 3112 from disengaging from the transmission gear 2 after engagement.

[0071] For example, refer to Fig.10The joint portion 31 may further include a pin 315, which may be inserted into the first groove 3122 in the radial direction, and the elastic member 314 may be a spring sleeved on the pin 315. In this embodiment, the lower bottom surface of the limit block 313 is connected to the first groove 3122 via the pin 315, and a spring may be sleeved on the outer circumference of the pin 315, in which case the spring is the elastic member 314, and the limit block 313 may generate a radial movement under the guidance of the pin 315 through the change of the radial elastic force of the elastic member 314. When the limit block 313 is squeezed by the inner circumference of the coupling sleeve 3112, the limit block 313 can be radially compressed toward the first groove 3122. When the squeezing force of the inner circumference of the coupling sleeve 3112 on the limit block 313 is reduced, the limit block 313 can extend in the reverse direction with a moving stroke, and the elastic member 314 always maintains the elastic force to pop the limit block 313 out of the first groove 3122, so as to achieve the effect of constant contact between the limit block 313 and the inner circumference of the coupling sleeve 3112.

[0072] In other embodiments, reference Figure 5 The number of the first groove 3122 and the number of the second groove 3116 can be multiple, and the multiple first grooves 3122 can be evenly arranged on the outer circumferential surface of the hub wheel 312, and the multiple second grooves 3116 can be evenly arranged on the inner circumferential surface of the coupling sleeve 3112, so that the two can obtain uniform limiting effect in the circumferential direction, ensuring that the force between the relative circumferential surfaces of the coupling sleeve 3112 and the hub wheel 312 is uniform, thereby improving the stability of the two when they move relative to each other.

[0073] For example, refer to Figure 5 and Figure 6 The outer periphery of the coupling sleeve 3112 may be provided with slots in the radial direction, and the first magnet 3111 may be embedded in the slots and form a fixed connection with the coupling sleeve 3112 after being embedded in the slots, so as to avoid relative separation between the first magnet 3111 and the coupling sleeve 3112 during rotational movement.

[0074] For example, refer to Figure 2 , Figure 5 and Fig.11, the engaging member 311 may further include a magnet bracket 3114, and the magnet bracket 3114 may include two mounting pieces 31141 respectively inserted into the slots, and the two mounting pieces 31141 may clamp the first magnet 3111 from both sides of the axial direction. In this embodiment, the inner diameter of the magnet bracket 3114 is set smaller than the outer diameter of the engaging sleeve 3112. To facilitate the installation of the magnet bracket 3114, by setting the magnet bracket 3114 as a splicing structure of two mounting pieces 31141, the mounting pieces 31141 may be spliced ​​to form the magnet bracket 3114 after being inserted into the slot, and the magnet bracket 3114 may clamp the first magnet 3111 from both sides of the axial direction, so as to fix the first magnet 3111. At the same time, the magnet bracket 3114 can be fixed to the coupling sleeve 3112 by bolting the mounting plate 31141 to the end surface of the coupling sleeve 3112, thereby fixing the coupling sleeve 3112, the magnet bracket 3114 and the first magnet 3111 as a whole, thereby improving the overall structural strength and movement stability of the coupling component 311.

[0075] For example, refer to Fig.11 The mounting piece 31141 may include two assembled semi-circular structures, so as to facilitate insertion into the slot from the upper semicircular direction and the lower semicircular direction of the coupling sleeve 3112 respectively, and the mounting piece 31141 may be assembled into a complete magnet bracket 3114 structure after being inserted into the slot, so as to facilitate the positioning and installation of the magnet bracket 3114 relative to the slot of the coupling sleeve 3112.

[0076] For example, refer to Figure 2 , Figure 5 , Figure 6 and Fig.12 The number of the first magnets 3111 can be set to be multiple, and the multiple first magnets 3111 can be arranged around the outer circumference of the coupling sleeve 3112. A separator 31142 can be provided on the magnet bracket 3114 to separate the multiple first magnets 3111. In this embodiment, the plurality of separators 31142 provided on the magnet support 3114 can separate the connection gaps between the plurality of first magnets 3111, and can relatively separate the plurality of first magnets 3111 in their respective separation chambers. Since each transmission component will generate metal debris during long-term use, the metal debris will cause wear to the first magnet 3111, affecting the service life and magnetism of the first magnet 3111, and excessive intrusion of lubricating oil used to lubricate each transmission component into the first magnet 3111 will also cause the positioning of the first magnet 3111 to become loose. By setting the first magnet 3111 as a plurality of parts of an overall ring shape and by the separation effect of the separator 31142 on the magnet support 3114, the loss of the first magnet 3111 as a whole during long-term use of the device can be reduced, and the service life of the first magnet 3111 can be improved. At the same time, the plurality of first magnets 3111 are conveniently positioned and installed under the separation effect of the separator 31142, and the overall structural stability of the coupling sleeve 3112 can be improved.

[0077] For example, refer to Figure 2 , Figure 5 and Fig.13 , the coupling member 311 may also include a magnetic isolation ring 3115 disposed on the magnet bracket 3114. The magnetic isolation ring 3115 may be an annular structure, and the magnetic isolation ring 3115 may be sleeved on the outside of the first magnet 3111. In this embodiment, the outside of the first magnet 3111 may be sleeved with an annular magnetic isolation ring 3115 structure. The magnetic isolation ring 3115 may be made of common non-magnetic metal materials, such as copper, aluminum, etc., which can be used to prevent the adsorption of metal debris generated by wear on the transmission gear 2 or other transmission structures inside the device, thereby ensuring the control accuracy of the gear shift. At the same time, the inner diameter of the magnetic isolation ring 3115 may be set to be slightly larger than the outer diameter of the first magnet 3111 and the magnet bracket 3114 after assembly, which is convenient for the installation of the magnetic isolation ring 3115 and can also prevent the first magnet 3111 from being loosened and causing radial displacement, and continuously colliding with the magnetic isolation ring 3115 to produce noise.

[0078] In other embodiments, reference Figure 5 and Fig.13 The magnetic isolation ring 3115 may be provided with a through hole 31151 which is opposite to the positioning hole 31143 on the magnet bracket 3114, for allowing the limiting pin 31152 to pass through to fix the magnet brackets 3114 on both sides, so that the magnetic isolation ring 3115 can form a whole with the magnet brackets 3114 on both sides, thereby improving the overall structural strength and movement stability of the coupling component 311.

[0079] In summary, taking the application scenario where both sides of the joint portion 31 have coil units 32 as an example, the synchronization assembly provided by the present disclosure can achieve gear switching in the following manner: In the initial state, the joint part 31 is in a neutral state in the middle position. At this time, the limit block 313 is engaged with the second groove 3116. The second magnets 322 of the coil units 32 on both sides of the joint part 31 have the same distance relative to the first magnet 3111 in the joint part 31. The forces exerted by the two second magnets 322 on the first magnet 3111 are the same in magnitude and opposite in direction. The joint part 31 can maintain balance in the neutral state under the action of the magnetic force and the limiting action of the limit block 313.

[0080] When it is necessary to switch gears, the electromagnetic coils 321 of the coil units 32 on both sides are energized at the same time and generate forces in the same direction, pushing the joint portion 31 to move axially toward one side. At this time, the limit block 313 is compressed and slides relative to the inner circumferential surface of the joint sleeve 3112. The joint sleeve 3112 is pushed to first engage with the synchronizer ring 3113 on this side, and continues to squeeze toward the transmission gear 2 on this side after engagement. The conical surface 31133 of the synchronizer ring 3113 and the conical surface 2312 of the gear ring 23 tend to synchronize their rotation speeds due to friction locking. , driving the coupling sleeve 3112 to engage smoothly with the gear ring 23. At this time, the coupling sleeve 3112 can engage with the transmission gear 2 on one side. The limit block 313 pops out of the first groove 3122 and presses against the axial end of the coupling sleeve 3112 through the limit inclined surface 3131, providing an axial supporting force for the coupling sleeve 3112. After the electromagnetic coil 321 is powered off, the coupling sleeve 3112 can be stably engaged with the transmission gear 2 on this side through the supporting force of the limit block 313 and the adsorption force of the second magnet 322 relative to the first magnet 3111.

[0081] When reverse gear switching is required, the electromagnetic coils 321 on both sides can be energized again, and the coupling part 31 can be driven to move in the opposite direction by controlling the current size and direction. The power can be cut off when the coupling part 31 returns to neutral or another opposite gear, thereby realizing a convenient gear switching function.

[0082] The second aspect of the embodiment of the present disclosure provides a transmission device, including a transmission shaft 1, a transmission gear 2, and a synchronization assembly 3 provided by the first aspect of the embodiment of the present disclosure. The transmission shaft 1 may include an input shaft 11 and an output shaft 12, the transmission gear 2 may include a driving gear 21 arranged on the input shaft 11 and a driven gear 22 arranged on the output shaft 12, and the synchronization assembly 3 may be arranged on the input shaft 11 or the output shaft 12. When the synchronization assembly 3 is arranged on the input shaft 11, the driving gear 21 is connected to the input shaft 11 in an empty sleeve, and when the synchronization assembly 3 is arranged on the output shaft 12, the driven gear 22 is connected to the input shaft 11 in an empty sleeve.

[0083] In some embodiments, reference Figure 1, the driving gear 21 may include a first driving gear 211 and a second driving gear 212, and the driven gear 22 may include a first driven gear 221 meshed with the first driving gear 211 and a second driven gear 222 meshed with the second driving gear 212, wherein, in the case where the synchronization assembly 3 is installed on the input shaft 11, the synchronization assembly 3 may be arranged between the first driving gear 211 and the second driving gear 212, and the synchronization assembly 3 may include two coil units 32, which may be separately arranged on both sides of the joint 31. In the case where the synchronization assembly 3 is installed on the output shaft 12, the synchronization assembly 3 may be arranged between the first driven gear 221 and the second driven gear 222, and the synchronization assembly 3 may include two coil units 32, which may be separately arranged on both sides of the joint 31.

[0084] The third aspect of the embodiment of the present disclosure provides a drive system, which may include the transmission device provided by the second aspect of the embodiment of the present disclosure, and has all its beneficial technical effects, which will not be elaborated here.

[0085] The fourth aspect of the embodiment of the present disclosure provides a vehicle, which may include the drive system provided by the third aspect of the embodiment of the present disclosure, and has all its beneficial technical effects, which will not be elaborated here.

[0086] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0087] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0088] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A synchronization assembly, used to be arranged on a transmission shaft and selectively engaged with a transmission gear sleeved on the transmission shaft, characterized in that: The synchronization component includes: a coupling portion, which is used for sleeve engagement with the transmission shaft and has a coupling member capable of axial movement, wherein the coupling member includes a first magnet; and The coil unit is arranged on the axial side of the joint portion, and the coil unit includes an electromagnetic coil. The electromagnetic coil is designed to drive the first magnet in the axial direction after being energized.

2. The synchronization component according to claim 1, characterized in that The coil unit further includes a second magnet, and the second magnet is designed to generate an axial force with the first magnet.

3. The synchronization component according to claim 2, characterized in that: The number of the coil units is two, and the coil units are disposed on both sides of the joint portion. The magnetic pole directions of the second magnets of the two coil units are the same.

4. The synchronization component according to claim 2, characterized in that: The electromagnetic coil and the second magnet are respectively annular in shape, the electromagnetic coil and the second magnet are coaxially arranged, and the electromagnetic coil is sleeved on the outside of the second magnet.

5. The synchronization component according to claim 4, characterized in that: The coil unit further includes a coil support, and the coil support is used to be sleeved on the outside of the transmission shaft at intervals. Wherein, an annular groove is formed on one side of the coil support facing the joint portion, and the second magnet and the electromagnetic coil are respectively arranged in the annular groove.

6. The synchronization component according to claim 5, characterized in that: The coil unit further includes a pressing plate detachably connected to the coil support and used for confining the second magnet and the electromagnetic coil in the annular groove.

7. The synchronization component according to claim 5, characterized in that: The number of the coil units is two and they are disposed on both sides of the joint, and the synchronization component comprises a connecting beam connecting the coil supports of the two coil units.

8. The synchronization component according to claim 1, characterized in that: The engaging portion includes a hub wheel, the hub wheel is used to be sleeved on the transmission shaft and is axially limited, and the outer periphery of the hub wheel is formed with key teeth. The engagement member comprises an engagement sleeve, which is sleeved on the outer side of the hub wheel and cooperates with the key teeth through tooth grooves. Wherein, the first magnet is fixed on the outer periphery of the coupling sleeve.

9. The synchronization component according to claim 8, characterized in that: The transmission gear has an axially protruding tooth ring, the outer periphery of which is formed with first engaging teeth, and the tooth groove is designed to match the first engaging teeth. Wherein, at least one of the first engaging tooth and the tooth groove has a guiding inclined surface for facilitating matching with the other.

10. The synchronization component according to claim 9, characterized in that The engagement member further comprises a synchronizing ring located between the gear ring and the hub wheel, and the end faces of the synchronizing ring and the gear ring that are close to each other are conical surfaces so that the two can be frictionally locked. The outer periphery of the synchronizer ring is formed with second engaging teeth, the tooth groove is designed to match with the second engaging teeth, and at least one of the second engaging teeth and the tooth groove has a guiding inclined surface for facilitating matching with the other.

11. The synchronization component according to claim 8, characterized in that: The outer circumference of the hub wheel is provided with a first groove, the inner circumference of the coupling sleeve is provided with a second groove corresponding to the position of the first groove, and the coupling portion also includes a limit block, which is connected to the first groove through an elastic member, and the elastic member is used to push the limit block radially outward.

12. The synchronization component according to claim 11, characterized in that The position of the limit block near the axial end is a limit bevel, so that when the coupling sleeve moves axially to engage with the transmission gear, the limit block pops out of the first groove and the limit bevel abuts against the axial end of the coupling sleeve.

13. The synchronization component according to claim 11, characterized in that: The engaging portion further comprises a pin, and the pin is inserted into the first groove along the radial direction, and the elastic member is a spring sleeved on the pin.

14. The synchronization component according to claim 8, characterized in that A slot is radially arranged on the outer circumference of the coupling sleeve, and the first magnet is embedded in the slot.

15. The synchronization component according to claim 14, characterized in that The engaging member further comprises a magnet bracket, and the magnet bracket comprises two mounting plates respectively inserted into the slots, and the two mounting plates clamp the first magnet from both sides of the axial direction.

16. The synchronization component according to claim 15, characterized in that The mounting plate comprises two joined semi-annular structures.

17. The synchronization component according to claim 15, characterized in that: There are multiple first magnets, which are arranged around the outer circumference of the coupling sleeve. A separator is arranged on the magnet bracket to separate the multiple first magnets.

18. The synchronization component according to claim 15, characterized in that: The joining component further comprises a magnetic isolation ring arranged on the magnet support, the magnetic isolation ring is an annular structure, and the magnetic isolation ring is sleeved on the outer side of the first magnet.

19. A transmission device, characterized in that: include: Transmission shaft, including input shaft and output shaft; A transmission gear, comprising a driving gear arranged on the input shaft and a driven gear arranged on the output shaft; as well as The synchronization component according to any one of claims 1 to 18, wherein the synchronization component is arranged on the input shaft or the output shaft.

20. The transmission device according to claim 19, characterized in that The driving gear includes a first driving gear and a second driving gear, and the driven gear includes a first driven gear meshed with the first driving gear and a second driven gear meshed with the second driving gear. Wherein, when the synchronization component is installed on the input shaft, the synchronization component is arranged between the first driving gear and the second driving gear, and the synchronization component includes two coil units, which are arranged on both sides of the joint; In the case where the synchronization assembly is installed on the output shaft, the synchronization assembly is disposed between the first driven gear and the second driven gear, and the synchronization assembly includes two coil units, which are disposed on both sides of the joint.

21. A drive system, characterized in that: Comprising the transmission device as claimed in claim 19 or 20.

22. A vehicle, characterized in that: Comprising the drive system of claim 21.

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