Horizontal Drive Assembly

Abstract

The present invention discloses a transverse drive assembly, which includes a power source, a transmission mechanism, and a reduction mechanism, the transmission mechanism includes a first shaft and a second shaft arranged in parallel, the first shaft is connected to the power source, the first shaft is provided with a first gear and a third gear, the second shaft is provided with a second gear and a fourth gear, the first gear is in mesh with the second gear, the third gear is in mesh with the fourth gear, the first gear is rotationally connected to the first shaft or the second gear is rotationally connected to the second shaft via a clutch, the third gear is in mesh with the first shaft or the fourth gear is rotationally connected to the second shaft via a clutch, the reduction mechanism is mounted on the second shaft and is connected to a differential. The transverse drive assembly has the advantages of a small envelope, light weight, low cost, and high efficiency.

Description

[Technical field]

[0001] The present invention relates to the technical field of new energy automobiles, and in particular to a transverse drive assembly. [Background technology]

[0002] With the rapid development of new energy, the application of new energy power systems to large vehicles is gradually realized, and large vehicles need to respond to different situations, so new energy power systems not only need to meet the requirements for large torque output, but also need to meet the requirements for high vehicle speed. In order to meet the above needs, the currently popular mode is to use a large torque motor and a single-stage reducer in the power system, which can meet the needs of large torque output and high vehicle speed, but this mode is expensive and the size of the large torque motor is large, which results in low power density of the power system.

[0003] In addition, the power system of existing pure electric heavy-duty vehicles is often arranged vertically. However, this arrangement occupies a large space under the vehicle, restricts the arrangement space of the battery pack, affects the battery capacity of the entire vehicle, and shortens the vehicle's driving time. When the power system adopts a horizontal arrangement, in order to output at a high gear ratio according to the overall load or climbing requirements of the vehicle, i.e. to meet the low-speed gear ratio i≧17, the prior art adopts a parallel shaft type two-stage transmission (i.e. three parallel shafts) or three-stage transmission (i.e. four parallel shafts), but it has disadvantages such as many gear bearings, a large assembly envelope, low efficiency, and high cost. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE DISCLOSURE In response to the above problems, the present invention discloses a transverse drive assembly to eliminate or at least partially address the above problems. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention employs the following technical solutions.

[0006] The present invention provides a transverse drive assembly, the transverse drive assembly including a power source, a transmission mechanism, and a reduction mechanism; the speed change mechanism includes a first shaft and a second shaft provided in parallel, the first shaft is power-transmittingly connected to the power source, a first gear and a third gear are provided on the first shaft, a second gear and a fourth gear are provided on the second shaft, the first gear meshes with the second gear, the third gear meshes with the fourth gear, the first gear and the first shaft or the second gear and the second shaft are rotationally connected via a clutch, and the third gear and the first shaft or the fourth gear and the second shaft are power-transmittingly connected via a clutch, The reduction mechanism is mounted on the second shaft and is power-transmittingly connected to a differential.

[0007] Furthermore, the second shaft is a hollow shaft, and is mounted on an output half shaft on one side of the differential.

[0008] The reduction mechanism further includes a sun gear, a planet carrier, a ring gear, and a planet gear, The sun gear is externally mounted on the second shaft, the ring gear is loosely fitted coaxially on the outside of the sun gear, the planetary gear is provided between the ring gear and the sun gear and meshes with the ring gear and the sun gear, respectively, the planetary gear is connected to the planetary carrier via a planetary shaft, and the planetary carrier is connected to a differential housing.

[0009] Furthermore, the planetary carrier and the housing of the differential are connected by screws / bolts or fixedly connected by welding, or The planetary carrier and the differential housing have an integrated structure.

[0010] Furthermore, the second gear and the fourth gear are both loosely fitted on the second shaft, and a first clutch cooperating with the second gear and the fourth gear is mounted on the second shaft.

[0011] Furthermore, the first clutch is provided between the second gear and the fourth gear, and the first clutch includes a first elastic member, a second elastic member, a first gear plate, a second gear plate, a first coil, a first armature disk, and a second armature disk; The first gear plate and the second gear plate are both mounted on the second shaft, and the first gear plate and the second gear plate are axially movable relative to the second shaft and rotate synchronously. The second gear has a first end surface tooth that cooperates with the first gear plate, and the fourth gear has a second end surface tooth that cooperates with the second gear plate. The first armature disk and the second armature disk are transmission-connected to the first gear plate and the second gear plate, respectively. One end of the first elastic member is connected to the second shaft, and the other end of the first elastic member is connected to the first gear plate. The second elastic member has one end connected to the second shaft and the other end connected to the second armature disk, and a biasing force is applied to the second elastic member so that the second gear plate is in a position to engage with the first end surface teeth. The second elastic member has one end connected to the second shaft and the other end connected to the second armature disk, and a biasing force is applied to the second elastic member so that the second gear plate is in a position to engage with the second end surface teeth. The first coil is provided between the first armature disk and the second armature disk, and can be adsorbed and connected to the first armature disk and the second armature disk, respectively.

[0012] The first coil further includes a first partial coil and a second partial coil arranged in parallel in the axial direction, A magnetic shielding member is provided on both the end of the first partial coil close to the second armature disk and the end of the second partial coil close to the first armature disk, so that the first partial coil is capable of attracting only the first armature disk after current is passed through it, and the second partial coil is capable of attracting only the second armature disk after current is passed through it.

[0013] Furthermore, the second shaft is provided with a first shoulder, and both the first elastic member and the second elastic member are connected to the second shaft via the first shoulder.

[0014] Furthermore, the first gear is loosely fitted to the first shaft, the fourth gear is loosely fitted to the second shaft, a second clutch is provided between the first gear and the first shaft, and a third clutch is provided between the fourth gear and the second shaft.

[0015] Further, the second clutch includes a third elastic member, a third gear plate, a third coil, and a third armature disc, the third gear plate is mounted on the first shaft, the third gear plate is axially movable relative to the first shaft and rotates synchronously with the first shaft, the first gear is provided with third end teeth cooperating with the third gear plate, the third armature disk is power-transmittingly connected to the third gear plate, one end of the third elastic member is connected to the first shaft and the other end is connected to the third armature disk, a biasing force is applied to the third elastic member so that the third gear plate is in a position separated from the third end teeth, and the third coil is provided between the first gear and the third armature disk, the third clutch includes a fourth elastic member, a fourth gear plate, a fourth coil, and a fourth armature disc; The fourth gear plate is mounted on the second shaft, the fourth gear plate is axially movable relative to the second shaft and rotates synchronously with the second shaft, the fourth gear is provided with fourth end surface teeth cooperating with the fourth gear plate, the fourth armature disk is dynamically connected to the fourth gear plate, one end of the fourth elastic member is connected to the second shaft and the other end is connected to the fourth armature disk, a biasing force is applied to the fourth elastic member so that the fourth gear plate is in a position separated from the fourth end surface teeth, and the fourth coil is provided between the fourth gear and the fourth armature disk. Effect of the Invention

[0016] The advantages and beneficial effects of the present invention are as follows:

[0017] In the horizontal drive assembly of the present invention, by providing a first shaft and a second shaft arranged in parallel, it is possible to realize switching between high and low speed stages, and by further providing a reduction mechanism between the second shaft and the differential, it is possible to realize a power output with a high transmission speed ratio. The horizontal drive assembly has the advantages of a small envelope, light weight, low cost, and high efficiency. [Brief description of the drawings]

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings, like reference numerals refer to like parts throughout.

[0019] [Figure 1] FIG. 1 is a structural schematic diagram of a horizontal driving assembly according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a structural schematic diagram of a horizontal driving assembly according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] In order to make the objectives, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the described embodiments are only some embodiments of the present invention, and are not all embodiments. All other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention are within the protection scope of the present invention.

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, technical solutions according to various embodiments of the present invention will be described in detail with reference to the accompanying drawings. Example 1

[0022] This embodiment provides a horizontal driving assembly, which includes a power source 1, a transmission mechanism 2, and a reduction mechanism 3, as shown in Figure 1. The power source 1 can be an electric motor or an engine.

[0023] Specifically, the speed change mechanism 2 includes a first shaft 4 and a second shaft 5 arranged in parallel, the first shaft 4 is connected to the power source 1, and the second gear 8 and the fourth gear 9 are both loosely fitted to the second shaft 5, that is, the second gear 8 is loosely fitted and attached to the second shaft 5 via a first bearing 17, and the fourth gear 9 is loosely fitted and attached to the second shaft 5 via a second bearing 18. Although loosely fitted and attached, neither the second gear 8 nor the fourth gear 9 moves in the axial direction. Needle bearings may be selected and used as the first bearing 17 and the second bearing 18. A first clutch capable of cooperating with the second gear 8 and the fourth gear 9 is mounted on the exterior of the second shaft 5, and the second gear 8 and the fourth gear 9 can be connected to the second shaft 5 by controlling the first clutch.

[0024] Specifically, the first gear 6 and the third gear 7 may be fixed to the first shaft 4 by interference fit connection, spline connection, flat key connection or the like, and the first gear 6 meshes with the second gear 8, and the third gear 7 meshes with the fourth gear 9. In addition, the transmission ratio between the first gear 6 and the second gear 8 is different from the transmission ratio between the third gear 7 and the fourth gear 9, and two types of gear ratio outputs are realized; that is, by controlling the first clutch, the transmission between the first shaft 4 and the second shaft 5 is realized by the meshing of the first gear 6 and the second gear 8 or the meshing of the third gear 7 and the fourth gear 9, and four types of gears (low speed, high speed, neutral speed, parking speed) can be switched, and different situations can be accommodated.

[0025] In this embodiment, the second gear and the fourth gear are installed to form a transmission connection with the second shaft through the first clutch, that is, the first clutch controls the transmission connection relationship between the second gear and the second shaft, and the fourth gear and the second shaft are simultaneously cut off by the first clutch, so that the load on the second shaft is completely unloaded, and the second shaft is operated in an unloaded state, and the power loss of the rotation of the second shaft can be effectively reduced.

[0026] 1, the reduction gear 3 is mounted on the exterior of the end of the second shaft 5 close to the fourth gear 9 and is connected to a differential 10, and power is transmitted to an output half shaft 11 via the differential 10, which in turn rotates the wheels, thereby realizing power output. Of course, in other embodiments, the reduction gear may be mounted on the exterior of the end of the second shaft close to the second gear and connected to the differential.

[0027] In the horizontal drive assembly of this embodiment, by controlling the transmission ratio of the gears in the reduction mechanism and coordinating with the transmission of two types of speed change ratios between the first shaft and the second shaft, the horizontal drive assembly can achieve a high transmission ratio output. The horizontal drive assembly only adopts a two-stage transmission structure and can achieve a high transmission ratio and large torque output without using a large torque power source, and has the advantages of a simpler overall structure, a smaller envelope, light weight, low cost and high efficiency.

[0028] In this embodiment, the rotor shaft of the power source and the first shaft adopt an integrated design, thus reducing the impact of the rotor shaft on the transmission mechanism. In another embodiment of the present invention, the rotor shaft of the power source may be connected to the first shaft through a coupling.

[0029] In addition, in this embodiment, the power source is connected to the end of the first shaft that is closer to the third gear, so that the installation distance between the first shaft and the second shaft is determined according to the dimensions of the power source and the differential, and the horizontal length of the horizontal drive assembly can be reduced. Of course, in other embodiments, the power source may be connected to the end of the first shaft that is closer to the first gear, and in this case, the installation distance between the first shaft and the second shaft is not affected by the dimensions of the power source and the differential, and the vertical length of the horizontal drive assembly can be reduced. Therefore, the positional relationship between the power source and the transmission mechanism can be adjusted according to the installation space of the horizontal drive assembly, and the needs of different vehicle models can be further met.

[0030] 1, the second shaft 5 is a hollow shaft, and is coaxially mounted on one output half shaft 11 of the differential 10, so that the second shaft 5 can rotate relative to the output half shaft 11 while remaining relatively fixed in the axial direction. The design in which the second shaft 5 is loosely fitted on one output half shaft of the differential 10 can fully utilize the original spatial volume of the differential 10 and reduce the vertical volume when the transverse drive assembly and the differential 10 cooperate with each other.

[0031] In this embodiment, as shown in FIG. 1, the reduction mechanism 3 includes a sun gear 12, a planetary carrier 13, a ring gear 14, and a planetary gear 15.

[0032] Specifically, the sun gear 12 is mounted on the second shaft 5, the ring gear 14 is loosely fitted coaxially on the outside of the sun gear 12, the ring gear 14 is fixedly connected to the housing of the transmission mechanism 2, the planetary gear 15 is provided between the ring gear 14 and the sun gear 12, and is engaged with the ring gear 14 and the sun gear 12, the planetary gear 15 is transmission-connected to the planetary carrier 13 via the planetary shaft 39, and the planetary carrier 13 is connected to the differential housing 16. The power on the second shaft 5 is transmitted to the differential housing 16 through the sun gear 12, the planetary gear 15, the planetary shaft 39, and the planetary carrier 13 in sequence, and the transmission ratio between the planetary gear 15 and the sun gear 12 is controlled so that the transverse drive assembly can output a large torque. Among them, the number of planetary gears is more than one, preferably three or four.

[0033] In addition, the planetary carrier and the differential housing adopt an integrated structure and are manufactured and molded integrally, thus making it easier to assemble the transverse drive assembly, and the connection structure between the planetary carrier and the differential housing is simpler and firmer. Of course, in other embodiments, the planetary carrier and the differential housing may adopt separate structures and be processed and manufactured separately, and then fixedly connected by screw / bolt connection or welding, and the separate planetary carrier and the differential housing are easier to process and manufacture.

[0034] 1, in this embodiment, the first clutch is mounted on the second shaft 5 between the second gear 8 and the fourth gear 9, and includes a first elastic member 19, a second elastic member 20, a first gear plate 21, a second gear plate 22, a first coil 23, a first armature disk 24, and a second armature disk 25. Among them, the first elastic member 19 and the second elastic member 20 may be a spring, an elastic piece, or a spring pack.

[0035] Specifically, the first gear plate 21 and the second gear plate 22 are both mounted on the second shaft 5, and are adapted to be movable in the axial direction relative to the second shaft 5 and rotate synchronously. For example, the first gear plate 21 and the second gear plate 22 may be connected to the second shaft 5 via a spline, and thus the first gear plate 21 and the second gear plate 22 can only move in the axial direction on the second shaft 5 and cannot rotate relative to each other.

[0036] The second gear 8 is provided with first end surface teeth that cooperate with the first gear plate 21, and the fourth gear 9 is provided with second end surface teeth that cooperate with the second gear plate 22, and the first armature disc 24 and the second armature disc 25 are operatively connected to the first gear plate 21 and the second gear plate 22, respectively.

[0037] One end of the first elastic member 19 is connected to the second shaft 5, and the other end is connected to the first armature disk 24, and a biasing force is applied to the first elastic member 19 so that the first gear plate 21 is in a position to engage with the first end surface teeth. One end of the second elastic member 20 is connected to the second shaft 5, and the other end is connected to the second armature disk 25, and a biasing force is applied to the second elastic member 20 so that the second gear plate 22 is in a position to engage with the second end surface teeth.

[0038] The first coil 23 is disposed between the first armature disc 24 and the second armature disc 25, and the first coil 23 is attracted to the first armature disc 24 and the second armature disc 25 after being energized. Among them, the first armature disc 24 is fixedly connected to the first gear plate 21, and the second armature disc 25 is fixedly connected to the second gear plate 22. Of course, in other embodiments, the first armature disk and the second armature disk may be transmission-connected to the first gear plate and the second gear plate through bearings, respectively, and the first elastic member abuts against the second shaft and the first armature disk, respectively, and the second elastic member abuts against the second shaft and the second armature disk, respectively. In this case, the first armature disk and the first gear plate can rotate independently, and the second armature disk and the second gear plate are transmission-connected and can rotate independently. In this way, the first armature disk and the second armature disk do not need to rotate following the second shaft, and the rotation load on the second shaft is reduced, and the kinetic energy loss is further reduced.

[0039] As shown in FIG. 1, the second shaft is provided with a first shoulder 26 , and both the first elastic member 19 and the second elastic member 20 are connected to the second shaft 5 via the first shoulder 26 .

[0040] Furthermore, the first coil may be connected to a housing of the transmission mechanism, so that the first coil is fixed relative to the housing, and the first coil includes a first partial coil and a second partial coil arranged in parallel in the axial direction, among which the first partial coils and the second partial coils are multiple and arranged alternately and uniformly, so that the adhesive force generated by the first coil against the first armature disc and the second armature disc becomes more uniform.

[0041] In addition, a magnetic shielding member is provided on both the end of the first partial coil close to the second armature disk and the end of the second partial coil close to the first armature disk, so that the first partial coil is capable of attracting only the first armature disk after current is applied, and the second partial coil is capable of attracting only the second armature disk after current is applied.

[0042] When the first partial coil is energized, the first coil attracts the first armature disk, moving the first armature disk in a direction away from the second gear against the elastic force of the first elastic member, and moving the first gear plate in the axial direction, separating the first gear plate from the first end surface teeth. At this time, no power is transmitted between the second gear and the second shaft.

[0043] When the second partial coil is energized, the second coil attracts the second armature disk, moving the second armature disk in a direction away from the fourth gear against the elastic force of the second elastic member, and moving the second gear plate in the axial direction, separating the second gear plate from the second end surface teeth. At this time, no power is transmitted between the fourth gear and the second shaft.

[0044] When both the first coil and the second coil are energized, the first gear plate and the first end surface teeth are separated, and the second gear plate and the second end surface teeth are separated, and at this time, no power is transmitted between the second gear and the second shaft, and between the fourth gear and the second shaft.

[0045] In this embodiment, the first partial coil and the second partial coil are arranged in parallel in the axial direction, and one clutch can realize control over whether or not two gear plates (i.e., the first gear plate and the second gear plate) engage with the end surface teeth, and the structure of the first clutch can be made more compact and the axial length can be made shorter.

[0046] Furthermore, the first armature disk is provided with a permanent magnet corresponding to the first partial coil, and the second armature disk is provided with a permanent magnet corresponding to the second partial coil. In this way, after the first partial coil and the second partial coil are energized to attract the first armature disk and the second armature disk, respectively, the first armature disk can be positioned to attract the first partial coil and the second armature disk can be positioned to attract the second partial coil without continuing to be energized, further reducing electrical energy loss in the coils.

[0047] Of course, a position regulating mechanism may be provided in the first clutch, and after the first partial coil is energized to attract the first armature disc and the second partial coil is energized to attract the second armature disc, the position regulating mechanism realizes position regulation of the first armature disc and the second armature disc, holds the first armature disc in a position where it is attracted to the first partial coil, and holds the second armature disc in a position where it is attracted to the second partial coil.In this way, the first partial coil and the second partial coil can be kept in a position where they are attracted to the first coil, without continuing to be energized, and the current loss of the coils is reduced.

[0048] The working principle of the horizontal drive assembly in this embodiment is as follows.

[0049] When the first clutch is not operating, due to the action of the elastic forces of the first elastic member and the second elastic member, the first gear plate is in a position to engage with the first end surface teeth, and the second gear plate is in a position to engage with the second end surface teeth, so that the first shaft and the second shaft cannot rotate, and the gear is in the parking gear.

[0050] When the first clutch is activated and only the first partial coil is energized, the first gear plate is in a position separated from the first end surface teeth, and the second gear plate is in a position engaged with the second end surface teeth, and the power source transmits power to the second shaft via the first shaft, the third gear, and the fourth gear in sequence. At this time, the gear is in a low gear position, and a large torque output can be achieved.

[0051] When the first clutch is operated and only the second partial coil is energized, the second gear plate is in a position where it is separated from the second end surface teeth, and the first gear plate is in a position where it is engaged with the first end surface teeth, and the power source transmits power to the second shaft via the first shaft, the first gear, and the second gear in sequence, at this time being in a high-speed stage, a high rotational speed output can be achieved.

[0052] When the first clutch is operated and the first partial coil and the second partial coil are both energized, the first gear plate is in a position where it is separated from the first end surface teeth, and the second gear plate is in a position where it is separated from the second end surface teeth, and power transmission cannot be achieved between the first shaft and the second shaft, and at this time it is in the neutral stage.

[0053] As can be seen from the above, the transverse drive assembly can realize transmission with two kinds of speed ratios, and can realize four speed changes through the control of the first clutch, the transmission type is flexible, and the driving needs of the entire vehicle for different road conditions are met. When the vehicle accelerates at start-up and climbs a slope with a heavy load, a transmission with a large speed ratio (i.e., a low speed) can be selected to improve the driving force of the entire vehicle and make up for the deficiency of the driving force of the entire vehicle; when the entire vehicle is in a cruising state, a transmission with a small speed ratio (i.e., a high speed) can be selected to meet the high-speed driving requirements of the entire vehicle, save energy, and improve the cruising range of the vehicle.

[0054] Of course, in other embodiments, the second gear and the fourth gear may respectively realize the transmission connection with the second shaft through two clutches, which is also within the protection scope of the present invention. Example 2

[0055] Unlike the first embodiment, as shown in FIG. 2, the first gear 6 in this embodiment is loosely fitted to the first shaft 4, and the fourth gear 9 is loosely fitted to the second shaft 5, that is, the first gear 6 is loosely fitted to the first shaft 4 through the third bearing 27, and the fourth gear 9 is loosely fitted to the second shaft 5 through the fourth bearing 28. Although they are loosely fitted, neither the first gear 6 nor the fourth gear 9 moves in the axial direction. Needle bearings may be selected as the third bearing 27 and the fourth bearing 28. A second clutch is provided between the first gear 6 and the first shaft 4, and a third clutch is provided between the fourth gear 9 and the second shaft 5. Specifically, the second gear 8 and the third gear 7 may be fixed to the first shaft 4 and the second shaft 5, respectively, by means of interference fit connection, spline connection, flat key connection, or the like. In addition, the power source 1 is connected to the end of the first shaft 4 close to the first gear 6, and thus the distance between the first shaft 4 and the second shaft 5 is not affected by the dimensions of the power source 1 and the differential 10.

[0056] 2, the second clutch includes a third elastic member 29, a third gear plate 30, a third coil 31, and a third armature disk 32. Among them, the third elastic member 29 may be a spring, an elastic piece, or a spring pack.

[0057] Specifically, the third gear plate 30 is mounted on the first shaft 4 so that the third gear plate 30 is axially movable relative to the first shaft 4 and rotates synchronously with the first shaft 4. For example, the third gear plate 30 may be connected to the first shaft 4 via a spline, and thus the third gear plate 30 is only capable of axial movement on the first shaft 4 but is unable to rotate relative thereto. The first gear 6 is provided with a third end surface tooth cooperating with the third gear plate 30, the third armature disk 32 is power-transmittingly connected to the third gear plate 30, one end of the third elastic member 29 is connected to the first shaft 4, and the other end is connected to the third armature disk 32. The third elastic member 29 is applied with a biasing force so that the third gear plate 30 is in a position where it is separated from the third end surface tooth, and the third coil 31 is provided between the first gear 6 and the third armature disk 32. After being energized, the third coil 31 is attracted to the third armature disk 32, and pulls the third gear plate 30 to be coupled with the third end surface tooth against the elastic force of the third elastic member 29, among which the third armature disk 32 is fixedly connected to the third gear plate 30. Of course, in other embodiments, the third armature disc may be transmission-connected to the third gear plate through a bearing, and the third elastic member abuts against the first shaft and the third armature disc respectively, at which time the third armature disc and the third gear plate can rotate independently, thus eliminating the need for the third armature disc to rotate following the first shaft, reducing the rotational load on the first shaft and further reducing the kinetic energy loss.

[0058] As shown in FIG. 2, the first shaft 4 is provided with a third shoulder 33 , and the third elastic member 29 is connected to the first shaft 4 via the third shoulder 33 .

[0059] In this embodiment, as shown in FIG. 2, the third clutch includes a fourth elastic member 34, a fourth gear plate 35, a fourth coil 36, and a fourth armature disc 37.

[0060] Specifically, the fourth gear plate 35 is mounted on the second shaft 5 so that the fourth gear plate 35 is movable in the axial direction relative to the second shaft 5 and rotates synchronously with the second shaft 5. For example, the fourth gear plate 35 may be connected to the second shaft 5 via a spline, and thus the fourth gear plate 35 is only capable of moving in the axial direction on the second shaft 5 but is unable to rotate relative thereto. The fourth gear 9 is provided with a fourth end surface tooth cooperating with the fourth gear plate 35, and the fourth armature disk 37 is power-transmittingly connected to the fourth gear plate 35. One end of the fourth elastic member 34 is connected to the second shaft 5, and the other end is connected to the fourth armature disk 37. A biasing force is applied to the fourth elastic member 34 so that the fourth gear plate 35 is in a position where it is separated from the fourth end surface tooth. A fourth coil 36 is provided between the fourth gear 9 and the fourth armature disk 37. After being energized, the fourth coil 36 is attracted to the fourth armature disk 37, and pulls the fourth gear plate 35 to be coupled with the fourth end surface tooth against the elastic force of the fourth elastic member 34, of which the fourth armature disk 37 is fixedly connected to the fourth gear plate 35. Of course, in other embodiments, the fourth armature disk may be transmission-connected to the fourth gear plate through a bearing, and the fourth elastic member abuts against the second shaft and the fourth armature disk respectively, at which time the fourth armature disk and the fourth gear plate can rotate independently, thus eliminating the need for the fourth armature disk to rotate following the second shaft, reducing the rotational load on the second shaft and further reducing the loss of kinetic energy.

[0061] As shown in FIG. 2, the second shaft 5 is provided with a fourth shoulder , and the fourth elastic member is connected to the second shaft 5 via the fourth shoulder .

[0062] The working principle of the horizontal drive assembly in this embodiment is as follows.

[0063] When neither the second clutch nor the third clutch is energized and in operation, due to the action of the elastic forces of the first elastic member and the second elastic member, the first gear plate is in a position where it is separated from the first end surface teeth, and the second gear plate is in a position where it is separated from the second end surface teeth, so that no power transmission can be achieved between the first shaft and the second shaft, and this is the neutral stage.

[0064] When the second clutch is energized and operating, and the third clutch is not energized and not operating, the first gear plate is in a position where it engages with the first end surface teeth, and the second gear plate is in a position where it is separated from the second end surface teeth, and the power source transmits power to the second shaft via the first shaft, the first gear, and the second gear in sequence. At this time, the high speed stage can be achieved, and a high rotational speed output can be achieved.

[0065] When the second clutch is not energized and not operating, and the third clutch is energized and operating, the first gear plate is in a position where it is separated from the first end surface teeth, and the second gear plate is in a position where it is engaged with the second end surface teeth, and the power source transmits power to the second shaft via the first shaft, the third gear, and the fourth gear in that order. At this time, the gear is in a low gear position, and a large torque output can be achieved.

[0066] When the second clutch and the third clutch are both energized and operating, the first gear plate is in a position to engage with the first end surface teeth, the second gear plate is in a position to engage with the second end surface teeth, the first shaft and the second shaft cannot rotate, and the gear is in the parking gear. Example 3

[0067] Unlike Example 1, in this example, the third gear is loosely fitted to the first shaft, the second gear is loosely fitted to the second shaft, the third gear and the second gear are transmission-connected to the first shaft and the second shaft, respectively, via clutches, and the first gear and the fourth gear are fixed to the first shaft and the second shaft, respectively. Example 4

[0068] Unlike Example 1, the first gear and the second gear in this example are loosely fitted on the first shaft, the first gear and the second gear are power-connected to the first shaft via a clutch, and the second gear and the fourth gear are fixed to the second shaft.

[0069] The above is merely a specific embodiment of the present invention, and under the above teaching of the present invention, those skilled in the art can make other improvements or modifications based on the above examples. Those skilled in the art should understand that the above specific description is for better interpreting the object of the present invention, and the protection scope of the present invention is based on the protection scope of the claims. [Explanation of symbols]

[0070] 1 power source, 2 transmission mechanism, 3 reduction mechanism, 4 first shaft, 5 second shaft, 6 first gear, 7 third gear, 8 second gear, 9 fourth gear, 10 differential, 11 output half shaft, 12 sun gear, 13 planet carrier, 14 ring gear, 15 planet gear, 16 differential housing, 17 first bearing, 18 second bearing, 19 first elastic member, 20 second elastic member, 21 first gear plate, 22 second gear plate, 23 first coil, 24 first armature disk, 25 second armature disk, 26 first shoulder, 27 third bearing, 28 fourth bearing, 29 third elastic member, 30 third gear plate, 31 third coil, 32 third armature disk, 33 third shoulder, 34 fourth elastic member, 35 fourth gear plate, 36 fourth coil, 37 4th armature disc, 38 4th shoulder, 39 planetary shaft.

Claims

1. A transverse drive assembly including a power source, a transmission mechanism, and a reduction mechanism; the speed change mechanism includes a first shaft and a second shaft provided in parallel, the first shaft is connected to the power source, a first gear and a third gear are provided on the first shaft, a second gear and a fourth gear are provided on the second shaft, the first gear meshes with the second gear, the third gear meshes with the fourth gear, the first gear and the first shaft or the second gear and the second shaft are rotationally connected via a clutch, and the third gear and the first shaft or the fourth gear and the second shaft are connected via a clutch, A transverse drive assembly, characterized in that the reduction mechanism is mounted on the second shaft and is transmission-connected to a differential.

2. 2. The transverse drive assembly of claim 1, wherein said second shaft is a hollow shaft, said second shaft being mounted on an output half shaft on one side of said differential.

3. the reduction mechanism includes a sun gear, a planet carrier, a ring gear, and a planet gear; 2. The transverse drive assembly according to claim 1, wherein the sun gear is mounted on the second shaft, the ring gear is coaxially fitted loosely on the outside of the sun gear, the planetary gears are provided between the ring gear and the sun gear and mesh with the ring gear and the sun gear, respectively, the planetary gears are connected to the planetary carrier via planetary shafts, and the planetary carrier is connected to a differential housing.

4. The planetary carrier and the housing of the differential are fixedly connected by screws / bolts or by welding, or 4. The transverse drive assembly of claim 3, wherein said planet carrier and said differential housing are of one piece construction.

5. 5. The horizontal drive assembly according to claim 1, wherein the second gear and the fourth gear are both loosely fitted to the second shaft, and a first clutch that cooperates with the second gear and the fourth gear, respectively, is mounted on the second shaft.

6. the first clutch is provided between the second gear and the fourth gear, and the first clutch includes a first elastic member, a second elastic member, a first gear plate, a second gear plate, a first coil, a first armature disk, and a second armature disk; The first gear plate and the second gear plate are both mounted on the second shaft, and the first gear plate and the second gear plate are axially movable relative to the second shaft and rotate synchronously. The second gear has a first end surface tooth that cooperates with the first gear plate, and the fourth gear has a second end surface tooth that cooperates with the second gear plate. The first armature disk and the second armature disk are respectively connected to the first gear plate and the second gear plate. One end of the first elastic member is connected to the second shaft, and the other end is connected to the first armature disk.

6. The horizontal drive assembly according to claim 5, wherein the first elastic member is biased so that the first gear plate is in a position to engage with the first end surface teeth, the second elastic member has one end connected to the second shaft and the other end connected to the second armature disk, the second elastic member is biased so that the second gear plate is in a position to engage with the second end surface teeth, and the first coil is provided between the first armature disk and the second armature disk and can be adsorbed and connected to the first armature disk and the second armature disk, respectively.

7. the first coil includes a first partial coil and a second partial coil arranged in parallel in an axial direction, 7. The horizontal drive assembly according to claim 6, wherein a magnetic shield member is provided on both an end of the first partial coil close to the second armature disk and an end of the second partial coil close to the first armature disk, and the first partial coil is capable of attracting only the first armature disk after being energized, and the second partial coil is capable of attracting only the second armature disk after being energized.

8. 7. The horizontal drive assembly of claim 6, wherein the second shaft has a first shoulder, and the first elastic member and the second elastic member are both connected to the second shaft via the first shoulder.

9. 5. The transverse drive assembly according to claim 1, wherein the first gear is loosely fitted to the first shaft, the fourth gear is loosely fitted to the second shaft, a second clutch is provided between the first gear and the first shaft, and a third clutch is provided between the fourth gear and the second shaft.

10. the second clutch includes a third elastic member, a third gear plate, a third coil, and a third armature disk; the third gear plate is mounted on the first shaft, the third gear plate is axially movable relative to the first shaft and rotates synchronously with the first shaft, the first gear is provided with third end surface teeth cooperating with the third gear plate, the third armature disk is power-transmittingly connected to the third gear plate, one end of the third elastic member is connected to the first shaft and the other end is connected to the third armature disk, a biasing force is applied to the third elastic member so that the third gear plate is in a position separated from the third end surface teeth, and the third coil is provided between the first gear and the third armature disk, the third clutch includes a fourth elastic member, a fourth gear plate, a fourth coil, and a fourth armature disk; 10. The transverse drive assembly of claim 9, wherein the fourth gear plate is mounted on the second shaft, the fourth gear plate is axially movable relative to the second shaft and rotates synchronously with the second shaft, the fourth gear is provided with fourth end teeth cooperating with the fourth gear plate, the fourth armature disk is transmission-connected to the fourth gear plate, one end of the fourth elastic member is connected to the second shaft and the other end is connected to the fourth armature disk, the fourth elastic member is biased to be in a position where the fourth gear plate is separated from the fourth end teeth, and the fourth coil is provided between the fourth gear and the fourth armature disk.

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