Gearshift device, electric drive axle and vehicle

Abstract

The utility model discloses a gear shifting device, electric drive axle and vehicle belong to vehicle technical field, and this gear shifting device includes: first gear shifting mechanism, second gear shifting mechanism and interlock mechanism, first gear shifting mechanism includes first gear shifting lever and first driver, and first driver is used for driving first gear shifting lever and moves along the first direction to make first gear shifting lever move to first neutral position or first gear -engaging position, and second gear shifting mechanism includes second gear shifting lever and second driver, and second driver is used for driving second gear shifting lever and moves along the first direction to make second gear shifting lever move to second neutral position or second gear -engaging position, and first gear shifting mechanism and second gear shifting mechanism can work independently, when the gear position of transmission is switched, can compress the gear selection time to thereby be favorable to reduce power interruption time, and interlock mechanism can select the lock first gear shifting mechanism, second gear shifting mechanism to avoid gear position conflict, guarantee the reliability of gear shifting device.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a gear shifting device, an electric drive axle, and a vehicle. Background Technology

[0002] When the shifting device switches between low and high gears in the transmission, the shifting time is the sum of the selection time and the shifting time. For example, when the transmission shifts from a low gear to a high gear, the actuator of the shifting device first pushes the low gear shift fork to neutral. Then, the actuator of the shifting device needs to move to the high gear shift fork to drive the high gear shift fork into the high gear. The process of the actuator of the shifting device moving between the high and low gear shift forks is the selection time.

[0003] In related technologies, the gear selection time is relatively long, resulting in a long gear shift time and a long power interruption time for the vehicle, which affects the vehicle's power performance. Utility Model Content

[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a gear shifting device that can reduce gear selection time and avoid gear conflict.

[0005] This utility model also proposes an electric drive bridge with the above-mentioned shifting device.

[0006] This utility model also proposes a vehicle having the above-mentioned electric drive axle.

[0007] A gear shifting device according to an embodiment of the present invention includes: a first gear shifting mechanism, the first gear shifting mechanism including a first gear shift lever and a first driver, the first driver being used to drive the first gear shift lever to move along a first direction, so that the first gear shift lever moves to a first neutral position or a first gear engagement position; and a second gear shifting mechanism, the second gear shifting mechanism being arranged opposite to the first gear shifting mechanism in a second direction, the second gear shifting mechanism including a second gear shift lever and a second driver, the second driver being used to drive the second gear shift lever to move along the first direction, so that the second gear shift lever moves to a first neutral position or a first gear engagement position. The gear shift lever has two positions: neutral and gear engagement. An interlocking mechanism is in place: when the first shift lever moves out of the first neutral position, the interlocking mechanism locks with the second shift lever in the second neutral position; when the first shift lever moves to the first neutral position, the interlocking mechanism releases its locking engagement with the second shift lever; when the second shift lever moves out of the second neutral position, the interlocking mechanism locks with the first shift lever in the first neutral position; when the second shift lever moves to the second neutral position, the interlocking mechanism releases its locking engagement with the first shift lever.

[0008] According to the gear shifting device of the present utility model embodiment, the first gear shifting mechanism and the second gear shifting mechanism can work independently. When switching gears in the transmission, the gear selection time can be compressed, thereby helping to reduce the power interruption time. The interlocking mechanism can selectively lock the first gear shifting mechanism and the second gear shifting mechanism to avoid gear conflict and ensure the reliability of the gear shifting device.

[0009] According to some embodiments of the present invention, the first shift lever has a first interlocking surface, the first interlocking surface has a first flat portion and a first locking groove portion, the second shift lever has a second interlocking surface, the second interlocking surface has a second flat portion and a second locking groove portion, and the interlocking mechanism is constructed as an interlocking pin that moves freely along the second direction; in the second direction, the first interlocking surface and the second interlocking surface are at least partially opposite, the length of the interlocking pin is L, the distance between the first flat portion and the second flat portion is D1, the distance between the first flat portion and the second locking groove portion is D2, the distance between the second flat portion and the first locking groove portion is D3, and the distance between the first locking groove portion and the second locking groove portion is D4, satisfying the relationship: D1 < L = D2 = D3 < D4.

[0010] According to some embodiments of the present invention, the shifting device further includes: a first gear position lock, which selectively locks the first shift lever; and a second gear position lock, which selectively locks the second shift lever.

[0011] According to some embodiments of the present invention, the first shift lever has a plurality of first locking grooves spaced apart along the first direction, and the first gear lock includes a first elastic locking pin. The first elastic locking pin elastically presses against the first shift lever in the second direction, and when the first shift lever is in the first engaged position and the first neutral position, the first elastic locking pin inserts into a corresponding first locking groove to lock the first shift lever in the first direction; the second shift lever has a plurality of second locking grooves spaced apart along the first direction, and the second gear lock includes a second elastic locking pin. The second elastic locking pin elastically presses against the second shift lever in the second direction, and when the second shift lever is in the second engaged position and the second neutral position, the second elastic locking pin inserts into a corresponding second locking groove to lock the second shift lever in the first direction.

[0012] According to some embodiments of the present invention, in the first direction, the locking force of the first elastic locking pin on the first shift lever is less than the driving force of the first driver on the first shift lever, and the locking force of the second elastic locking pin on the second shift lever is less than the driving force of the second driver on the second shift lever.

[0013] According to some embodiments of the present invention, the first driver includes: a first drive motor, a first lead screw, and a first guide rod, wherein the first lead screw and the first guide rod both extend along the first direction, the first drive motor is drivenly connected to the first lead screw, the first shift lever is threadedly engaged with the first lead screw, and the first shift lever is also guidedly engaged with the first guide rod; the second driver includes: a second drive motor, a second lead screw, and a second guide rod, wherein the second lead screw and the second guide rod both extend along the first direction, the second drive motor is drivenly connected to the second lead screw, the second shift lever is threadedly engaged with the second lead screw, and the second shift lever is also guidedly engaged with the first guide rod.

[0014] According to some embodiments of the present invention, there are two first gear shift positions, and in the first direction, the first neutral position is located between the two first gear shift positions. There are also two second gear shift positions, and in the first direction, the second neutral position is located between the two first gear shift positions.

[0015] According to some embodiments of the present invention, the shifting device further includes a housing, wherein the first shifting mechanism, the second shifting mechanism, and the interlocking mechanism are all at least partially installed within the housing.

[0016] According to another embodiment of the present invention, the electric drive bridge includes the above-described shifting device.

[0017] According to the electric drive axle of this utility model embodiment, the first shifting mechanism and the second shifting mechanism of its shifting device can work independently. When switching gears in the transmission, the gear selection time can be compressed, thereby helping to reduce the power interruption time. The interlocking mechanism can selectively lock the first shifting mechanism and the second shifting mechanism to avoid gear conflict and ensure the reliability of the shifting device.

[0018] The vehicle according to another embodiment of the present invention includes the above-described electric drive axle.

[0019] According to the vehicle of the present invention, the first shifting mechanism and the second shifting mechanism of the shifting device can work independently. When switching gears in the transmission, the gear selection time can be compressed, thereby helping to reduce the power interruption time. The interlocking mechanism can selectively lock the first shifting mechanism and the second shifting mechanism to avoid gear conflict and ensure the reliability of the shifting device.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the shifting device structure according to an embodiment of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the shifting device structure according to an embodiment of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the shifting device structure according to an embodiment of the present utility model. Figure 3 ; Figure 4 This is a schematic diagram of a shifting device when the first shift lever is in the first neutral position and the second shift lever is in the second neutral position according to an embodiment of the present utility model. Figure 5 This is a schematic diagram of a shifting device when the first shift lever is located in the first gear engagement position to the left of the first neutral position and the second shift lever is located in the second neutral position, according to an embodiment of the present utility model. Figure 6 This is a schematic diagram of a shifting device when the first shift lever is located in the first gear position to the right of the first neutral position and the second shift lever is located in the second neutral position, according to an embodiment of the present utility model. Figure 7 This is a schematic diagram of a shifting device when the first shift lever is in the first neutral position and the second shift lever is in the second gear position to the left of the second neutral position, according to an embodiment of the present utility model. Figure 8 This is a schematic diagram of a shifting device when the first shift lever is in the first neutral position and the second shift lever is in the second gear position to the right of the second neutral position, according to an embodiment of the present utility model. Figure 9 This is a schematic diagram of the gear shifting device according to another embodiment of the present invention.

[0022] Figure label: First shifting mechanism 1; first shift lever 11; first interlocking surface 111; first flat part 1111; first locking groove part 1112; first locking groove 112; first lever body 11a; first nut 11b; first driver 12; first drive motor 121; first lead screw 122; first guide rod 123; Second shift mechanism 2; second shift lever 21; second interlock surface 211; second flat part 2111; second locking groove part 2112; second locking groove 212; second lever body 21a; second nut 21b; second driver 22; second drive motor 221; second lead screw 222; second guide rod 223; Interlocking mechanism 3; Interlocking pin 31; First protrusion 311; Second protrusion 312; First elastic element 32; Second elastic element 33 First position locking device 4; First elastic locking pin 41; First locking pin body 411; First elastic element 412; First self-locking nut 42; Second position locking device 5; Second elastic locking pin 51; Second locking pin body 511; Second elastic element 512; Second self-locking nut 52; 6. Shell 6; partition wall 61; connecting hole 611; Gear shifting device 10. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The shifting device 10, the electric drive axle, and the vehicle according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Reference Figures 1-4As shown, the gear shifting device 10 according to an embodiment of the present invention includes: a first gear shifting mechanism 1, a second gear shifting mechanism 2, and an interlocking mechanism 3. The first gear shifting mechanism 1 includes a first gear shift lever 11 and a first driver 12. The first driver 12 is used to drive the first gear shift lever 11 to move along a first direction, so that the first gear shift lever 11 moves to a first neutral position or a first gear position. The second gear shifting mechanism 2 is arranged opposite to the first gear shifting mechanism 1 in a second direction. The second gear shifting mechanism 2 includes a second gear shift lever 21 and a second driver 22. The second driver 22 is used to drive the second gear shift lever 21 to move along the first direction, so that the second gear shift lever 21 moves to a second neutral position or a second gear position. When the first shift lever 11 moves out of the first neutral position, the interlocking mechanism 3 locks with the second shift lever 21 in the second neutral position; when the first shift lever 11 moves to the first neutral position, the interlocking mechanism 3 releases its locking engagement with the second shift lever 21; when the second shift lever 21 moves out of the second neutral position, the interlocking mechanism 3 locks with the first shift lever 11 in the first neutral position; when the second shift lever 21 moves to the second neutral position, the interlocking mechanism 3 releases its locking engagement with the first shift lever 11.

[0029] The shifting device 10 can be used in vehicles to drive the vehicle's transmission to switch gears, enabling the vehicle to achieve the optimal gear ratio. The shifting device 10 includes a first shifting mechanism 1, a second shifting mechanism 2, and an interlocking mechanism 3. The first shifting mechanism 1 and the second shifting mechanism 2 can drive different shift forks of the transmission respectively to achieve rapid gear switching and reduce gear switching time. The interlocking mechanism 3 can selectively lock the first shifting mechanism 1 and the second shifting mechanism 2 to avoid gear conflict and ensure the reliability of the shifting device 10.

[0030] Reference Figures 1-3 As shown, the first shifting mechanism 1 includes a first shift lever 11 and a first driver 12. The first shift lever 11 can be connected to the low gear shift fork of the transmission. The first driver 12 is used to drive the first shift lever 11 to move along a first direction, which can be... Figure 2 The transmission operates in the left-right direction. When the first driver 12 drives the first shift lever 11 to the first neutral position, the first shift lever 11 drives the connected low-gear shift fork to move synchronously, placing the low-gear shift fork in neutral. At this time, the transmission is in neutral or a high gear. When the first driver 12 drives the first shift lever 11 to the first gear position, the first shift lever 11 drives the connected low-gear shift fork to engage a low gear.

[0031] Reference Figure 1 and Figure 3As shown, the second shift mechanism 2 includes a second shift lever 21 and a second driver 22. The second shift lever 21 can be connected to the high-gear shift fork of the transmission. The second driver 22 is used to drive the second shift lever 21 to move along a first direction. The first direction can be... Figure 1 The transmission operates in the left-right direction. When the second actuator 22 drives the second shift lever 21 to the second neutral position, the second shift lever 21 drives the connected high-gear shift fork to move synchronously, placing the high-gear shift fork in neutral. At this time, the transmission is in neutral or a low gear. When the second actuator 22 drives the second shift lever 21 to the second gear position, the second shift lever 21 drives the connected high-gear shift fork to engage the transmission in a high gear.

[0032] Reference Figure 1 As shown, the second direction can be perpendicular to the first direction. The second shifting mechanism 2 and the first shifting mechanism 1 are arranged side by side in the second direction to make the shifting device 10 compact, improve the space utilization of the shifting device 10, facilitate the installation of the shifting device 10 on the transmission, and enable the first shift lever 11 and the second shift lever 21 to correspondingly drive the low gear shift fork and the high gear shift fork spaced apart in the second direction. The second direction can be perpendicular to the first direction, that is, the second direction is... Figure 1 The front and back directions in the middle.

[0033] It should be noted that if the transmission is engaged in both low and high gears at the same time, gear conflict will occur, which may damage the transmission. Interlock mechanism 3 can prevent this problem from occurring.

[0034] Reference Figure 5 and Figure 6 As shown, when the first shift lever 11 moves out of the first neutral position, the transmission will be engaged or has already been engaged in a low gear. At this time, the interlock mechanism 3 locks with the second shift lever 21 in the second neutral position, thereby preventing the second shift lever 21 from moving and preventing the transmission from being engaged in a high gear.

[0035] Reference Figure 4 , Figure 7 and Figure 8 As shown, when the first shift lever 11 is moved to the first neutral position, the transmission is not engaged in a low gear. The interlock mechanism 3 releases its locking engagement with the second shift lever 21. At this time, the second shift lever 21 can move freely, and the transmission can be engaged in a high gear.

[0036] Reference Figure 7 and Figure 8 As shown, when the second shift lever 21 moves out of the second neutral position, the transmission will be engaged or has already been engaged in a high gear. At this time, the interlock mechanism 3 locks with the first shift lever 11 in the first neutral position, thereby preventing the first shift lever 11 from moving and preventing the transmission from being engaged in a low gear.

[0037] Reference Figures 4-6 As shown, when the second shift lever 21 is moved to the second neutral position, the transmission is not engaged in a high gear. The interlock mechanism 3 releases its locking engagement with the first shift lever 11. At this time, the first shift lever 11 can move freely, and the transmission can be engaged in a low gear.

[0038] Understandably, when the gear shifting device 10 operates to shift gears from a low gear to a high gear, the first driver 12 first drives the first shift lever 11 from the first engaged position to the first neutral position, and then the second driver 22 drives the second shift lever 21 from the second neutral position to the second engaged position. In the above process, the time from when the first shift lever 11 stops moving to when the second shift lever 21 starts moving is the gear selection time. Since the first driver 12 and the second driver 22 are two independent drivers, the second driver 22 can immediately drive the second shift lever 21 to start moving when the first shift lever 11 stops moving, thereby greatly reducing the gear selection time, improving the efficiency of gear shifting, reducing the power interruption time during gear shifting, and improving the smoothness of vehicle power.

[0039] Similarly, when the shifting device 10 is operating to switch gears from high gear to low gear in the transmission, the first driver 12 can immediately drive the first shifting lever 11 to start moving when the second shift lever 21 stops moving, so as to reduce the gear selection time from high gear to low gear.

[0040] According to the gear shifting device 10 of this utility model embodiment, the first gear shifting mechanism 1 and the second gear shifting mechanism 2 can work independently. When switching gears in the transmission, the gear selection time can be compressed, which helps to reduce the power interruption time. The interlocking mechanism 3 can selectively lock the first gear shifting mechanism 1 and the second gear shifting mechanism 2 to avoid gear conflict and ensure the reliability of the gear shifting device 10.

[0041] In some embodiments of this utility model, reference is made to Figure 4As shown, the first shift lever 11 has a first interlocking surface 111, which has a first flat portion 1111 and a first locking groove portion 1112. The second shift lever 21 has a second interlocking surface 211, which has a second flat portion 2111 and a second locking groove portion 2112. The interlocking mechanism 3 is an interlocking pin 31 that moves freely in a second direction. In the second direction, the first interlocking surface 111 and the second interlocking surface 211 are at least partially opposite each other. The length of the interlocking pin 31 is L. The distance between the first flat portion 1111 and the second flat portion 2111 is D1. The distance between the first flat portion 1111 and the second locking groove portion 2112 is D2. The distance between the second flat portion 2111 and the first locking groove portion 1112 is D3. The distance between the first locking groove portion 1112 and the second locking groove portion 2112 is D4. The following relationship is satisfied: D1 < L = D2 = D3 < D4.

[0042] Specifically, the interlocking pin 31 can remain in a fixed position in the first direction, and can move freely in the second direction. The interlocking pin 31 can lock the first shift lever 11 by inserting into the first locking groove 1112, and can also lock the second shift lever 21 by inserting into the second locking groove 2112.

[0043] Reference Figure 4 As shown, when the first shift lever 11 is in the first neutral position and the second shift lever 21 is in the second neutral position, in the second direction, the first interlocking surface 111 and the second interlocking surface 211 are directly opposite each other, that is, the first flat portion 1111 and the second flat portion 2111 are directly opposite each other, the first locking groove portion 1112 and the second locking groove portion 2112 are directly opposite each other, and the interlocking pin 31 is located between the first locking groove portion 1112 and the second locking groove portion 2112. Since L < D4, the interlocking pin 31 is not locked with the first shift lever 11 and the second shift lever 21.

[0044] Reference Figure 5 and Figure 6 As shown, when the first shift lever 11 moves out of the first neutral position, since L=D2, on the second side, the interlocking pin 31 abuts between the first flat part 1111 and the second locking groove part 2112, and the interlocking pin 31 locks the second shift lever 21 in the second neutral position.

[0045] Reference Figure 7 and Figure 8 As shown, when the second shift lever 21 moves out of the second neutral position, since L=D3, on the second side, the interlocking pin 31 abuts between the second flat part 2111 and the first locking groove part 1112, and the interlocking pin 31 locks the first shift lever 11 in the first neutral position.

[0046] Meanwhile, since D1 < L, that is, the distance between the first flat part 1111 and the second flat part 2111 is less than the length of the interlocking pin 31, the interlocking pin 31 cannot enter between the first flat part 1111 and the second flat part 2111, so as to ensure the reliability of its locking of the first shift lever 11 and the second shift lever 21 and avoid gear conflict.

[0047] In the above embodiment, the interlocking mechanism 3 is an interlocking pin 31 that moves freely in the second direction. By setting the length of the interlocking pin 31, the first shift lever 11 and the second shift lever 21 can automatically achieve an interlocking function. The interlocking mechanism 3 has a simple structure and high reliability.

[0048] In some other embodiments of this utility model (not shown in the figure), the interlocking mechanism 3 includes: a first position sensor and a first electric drive locking pin. The first position sensor is communicatively connected to the first electric drive locking pin. The first position sensor can be used to detect the position of the first shift lever 11 and the second shift lever 21. The first electric drive locking pin can selectively lock the first shift lever 11 and the second shift lever 21 according to their positions.

[0049] In some embodiments of this utility model, reference is made to Figures 3-8 As shown, the shifting device 10 also includes: a first gear position lock 4 and a second gear position lock 5. The first gear position lock 4 selectively locks the first shift lever 11, and the second gear position lock 5 selectively locks the second shift lever 21.

[0050] Specifically, when the first driver 12 drives the first shift lever 11 to move, the first gear position lock 4 can release its lock on the first shift lever 11, allowing the first shift lever 11 to move to the first neutral position or the first gear position. After the first shift lever 11 moves to the first neutral position or the first gear position, the first gear position lock 4 can lock the first shift lever 11 to prevent the position of the first shift lever 11 from shifting and to prevent the transmission from disengaging.

[0051] When the second drive 22 moves the second shift lever 21, the second gear position lock 5 can release its lock on the second shift lever 21, allowing the second shift lever 21 to move to the second neutral position or the second gear position. After the second shift lever 21 moves to the second neutral position or the second gear position, the second gear position lock 5 can lock the second shift lever 21 to prevent the position of the second shift lever 21 from shifting and to prevent the transmission from disengaging.

[0052] In some embodiments of this utility model, reference is made to Figures 4-8As shown, the first shift lever 11 has a plurality of first locking grooves 112 spaced apart along a first direction. The first gear position lock 4 includes a first elastic locking pin 41, which elastically presses against the first shift lever 11 in a second direction. When the first shift lever 11 is in the first gear position and the first neutral position, the first elastic locking pin 41 inserts into a corresponding first locking groove 112 to lock the first shift lever 11 in the first direction. The second shift lever 21 has a plurality of second locking grooves 212 spaced apart along a first direction. The second gear position lock 5 includes a second elastic locking pin 51, which elastically presses against the second shift lever 21 in the second direction. When the second shift lever 21 is in the second gear position and the second neutral position, the second elastic locking pin 51 inserts into a corresponding second locking groove 212 to lock the second shift lever 21 in the first direction.

[0053] Specifically, the first elastic locking pin 41 may include a first locking pin body 411 and a first elastic element 412. The first elastic element 412 can apply an elastic force to the first locking pin body 411 to bring it close to the first shift lever 11. When the first shift lever 11 is in the first gear position, the first locking pin body 411 can be inserted into a corresponding first locking groove 112 under the action of the first elastic element 412, thereby locking the first shift lever 11. When the first shift lever 11 is in the first neutral position, the first locking pin body 411 can be inserted into another corresponding first locking groove 112 under the action of the first elastic element 412, thereby locking the first shift lever 11. When the first shift lever 11 is between the first gear position and the first neutral position, the first elastic element 412 is compressed, and the first locking pin body 411 abuts against the first shift lever 11 outside the first locking groove 112, and the first locking pin body 411 does not lock the first shift lever 11.

[0054] The second elastic locking pin 51 may include a second locking pin body 511 and a second elastic element 512. The second elastic element 512 can apply an elastic force to the second locking pin body 511, bringing it closer to the second shift lever 21. When the second shift lever 21 is in the second gear position, the second locking pin body 511 can be inserted into a corresponding second locking groove 212 under the action of the second elastic element 512, thereby locking the second shift lever 21. When the second shift lever 21 is in the second neutral position, the second locking pin body 511 can be inserted into another corresponding second locking groove 212 under the action of the second elastic element 512, thereby locking the second shift lever 21. When the second shift lever 21 is between the second gear position and the second neutral position, the second elastic element 512 is compressed, and the second locking pin body 511 abuts against the second shift lever 21 outside the second locking groove 212, and the second locking pin body 511 does not lock the second shift lever 21.

[0055] In the above embodiments, both the first elastic locking pin 41 and the second elastic locking pin 51 are mechanical structures, and can realize the functions of automatic unlocking and locking, with the advantages of simple structure and high reliability.

[0056] In some other embodiments of this utility model (not shown in the figure), the first gear lock 4 includes: a second position sensor and a second electric drive lock pin. The second position sensor is communicatively connected to the second electric drive lock pin. The second position sensor can be used to detect the position of the first shift lever 11. The second electric drive lock pin can selectively lock the first shift lever 11 according to the position of the first shift lever 11.

[0057] The second gear lock 5 includes a third position sensor and a third electric drive lock pin. The third position sensor is communicatively connected to the third electric drive lock pin. The third position sensor can be used to detect the position of the second shift lever 21. The third electric drive lock pin can selectively lock the second shift lever 21 according to its position.

[0058] In some embodiments of this utility model, in the first direction, the locking force of the first elastic locking pin 41 on the first shift lever 11 is less than the driving force of the first driver 12 on the first shift lever 11, and the locking force of the second elastic locking pin 51 on the second shift lever 21 is less than the driving force of the second driver 22 on the second shift lever 21.

[0059] Specifically, in the first direction, the locking force of the first elastic locking pin 41 on the first shift lever 11 is less than the driving force of the first driver 12 on the first shift lever 11. That is, when the first driver 12 drives the first shift lever 11 to move, the locking force of the first elastic locking pin 41 on the first shift lever 11 cannot resist the driving force of the first driver 12 on the first shift lever 11, thereby causing the first driver 12 to drive the first shift lever 11 to move. As the first shift lever 11 moves in the first direction, the first elastic locking pin 41 and the first locking groove 112 are misaligned in the second direction to release the locking of the first elastic locking pin 41 on the first shift lever 11 and prevent the first elastic locking pin 41 from affecting the normal shifting movement of the first shift lever 11.

[0060] Similarly, in the first direction, the locking force of the second elastic locking pin 51 on the second shift lever 21 is less than the driving force of the second driver 22 on the second shift lever 21. That is, when the second driver 22 drives the second shift lever 21 to move, the locking force of the second elastic locking pin 51 on the second shift lever 21 cannot resist the driving force of the second driver 22 on the second shift lever 21, thereby causing the second driver 22 to drive the second shift lever 21 to move. As the second shift lever 21 moves in the first direction, the second elastic locking pin 51 and the second locking groove 212 are misaligned in the second direction to release the locking of the second elastic locking pin 51 on the second shift lever 21 and prevent the second elastic locking pin 51 from affecting the normal shifting movement of the second shift lever 21.

[0061] In some embodiments of this utility model, reference is made to Figures 1-4 As shown, the first driver 12 includes a first drive motor 121, a first lead screw 122, and a first guide rod 123. Both the first lead screw 122 and the first guide rod 123 extend along a first direction. The first drive motor 121 is drive-connected to the first lead screw 122. A first shift lever 11 is threadedly engaged with the first lead screw 122 and also guides the first guide rod 123. The second driver 22 includes a second drive motor 221, a second lead screw 222, and a second guide rod 223. Both the second lead screw 222 and the second guide rod 223 extend along a first direction. The second drive motor 221 is drive-connected to the second lead screw 222. A second shift lever 21 is threadedly engaged with the second lead screw 222 and also guides the first guide rod 123.

[0062] Specifically, since the first shift lever 11 is threadedly engaged with the first lead screw 122, and the first shift lever 11 is also guided by the first guide rod 123 in the first direction, when the first drive motor 121 drives the first lead screw 122 to rotate, the first shift lever 11 moves in the first direction under the drive of the first lead screw 122 and the guidance of the first guide rod 123. The left and right movement directions of the first shift lever 11 can be controlled by changing the rotation direction of the first drive motor 121.

[0063] Similarly, since the second shift lever 21 is threadedly engaged with the second lead screw 222 and also guided by the second guide rod 223 in the first direction, when the second drive motor 221 drives the second lead screw 222 to rotate, the second shift lever 21 moves in the first direction under the drive of the second lead screw 222 and the guidance of the second guide rod 223. The left and right movement directions of the second shift lever 21 can be controlled by changing the rotation direction of the second drive motor 221.

[0064] Reference Figure 3As shown, the first shift lever 11 includes a first lever body 11a and a first nut 11b. The first nut 11b can be fixed to the first lever body 11a by welding, bonding, or other methods. The first shift lever 11 can be assembled from the first lever body 11a and the first nut 11b to facilitate the manufacturing and assembly of the first shift lever 11. The first nut 11b is threaded into the first lead screw 122. The first lever body 11a has a first inner hole, which is fitted with the first guide rod 123 with a small clearance, so that the first guide rod 123 guides the first lever body 11a in the first direction. When the first lead screw 122 rotates, the first guide rod 123 can convert the rotational motion of the first lever body 11a into linear motion. The first lever body 11a moves linearly, and its shifting force point can be along the shift axis direction. Therefore, no additional component force is generated, that is, no useless work is generated, the shifting efficiency is high, and the energy consumption is low.

[0065] Reference Figure 3 As shown, the second shift lever 21 includes a second lever body 21a and a second nut 21b. The second nut 21b can be fixed to the second lever body 21a by welding, bonding, or other methods. The second shift lever 21 can be assembled from the second lever body 21a and the second nut 21b to facilitate the manufacturing and assembly of the second shift lever 21. The second nut 21b is threaded into the second lead screw 222. The second lever body 21a has a second inner hole, which is fitted with the second guide rod 223 with a small clearance, so that the second guide rod 223 guides the second lever body 21a in the first direction. When the second lead screw 222 rotates, the second guide rod 223 can convert the rotational motion of the second lever body 21a into linear motion. The second lever body 21a moves linearly, and its shifting force point can be along the shift axis direction. Therefore, no additional component force is generated, that is, no useless work is generated, the shifting efficiency is high, and the energy consumption is low.

[0066] In the above embodiments, the first driver 12 and the second driver 22 are configured as ball screw structures. The lead of the ball screw structure can be selected, so a larger speed ratio can be obtained. That is, by selecting the first drive motor 121 with a smaller torque, a larger shifting force can be output.

[0067] In some other embodiments of the present invention, the first driver 12 and the second driver 22 may be configured as a retractable hydraulic or electric telescopic rod in a first direction to drive the corresponding first shift lever 11 and second shift lever 21 to move in the first direction by telescopic drive.

[0068] In some embodiments of this utility model, reference is made to Figures 4-8As shown, there are two first gear positions, and in the first direction, the first neutral position is located between the two first gear positions. There are also two second gear positions, and in the first direction, the second neutral position is located between the two first gear positions.

[0069] Specifically, in the first direction, the first gear position to the left of the first neutral position corresponds to the first gear of the transmission, and the first gear position to the right of the first neutral position corresponds to the second gear of the transmission. The first and second gears are low gears. The second gear position to the left of the second neutral position corresponds to the third gear of the transmission, and the second gear position to the right of the second neutral position corresponds to the fourth gear of the transmission. The third and fourth gears are high gears. The first neutral position and the second neutral position can both correspond to the neutral position of the transmission. The shifting device 10 can realize the control of four power transmission gears and one neutral position to improve the functionality of the shifting device 10.

[0070] Reference Figure 4 As shown, when the transmission is in neutral, the first shift lever 11 is in the first neutral position and the second shift lever 21 is in the second neutral position.

[0071] Reference Figure 5 As shown, when the transmission shifts from neutral to first gear, the first driver 12 drives the first shift lever 11 to move to the left to the first gear position to the left of the first neutral position. During this process, the first shift lever 11 also pushes the interlock pin 31 to move towards the second shift lever 21, so that the second shift lever 21 is locked by the interlock pin 31. At the same time, when the first shift lever 11 moves to the left to the first gear position to the left of the first neutral position, the first shift lever 11 is locked by the first elastic locking pin 41.

[0072] Reference Figure 6 As shown, when the transmission shifts from first gear to second gear, the first driver 12 drives the first shift lever 11 to move to the right to the second gear position to the right of the first neutral position. During this process, the second shift lever 21 is locked by the interlocking pin 31. At the same time, when the first shift lever 11 moves to the right to the first gear position to the left of the first neutral position, the first shift lever 11 is locked by the first elastic locking pin 41.

[0073] Reference Figure 7As shown, when the transmission shifts from second to third gear, the first driver 12 drives the first shift lever 11 to move to the right to the first neutral position. The interlock pin 31 releases its lock on the first shift lever 11. Then, the second driver 22 drives the second shift lever 21 to move to the left to the second gear position to the left of the second neutral position. During this process, the second shift lever 21 also pushes the interlock pin 31 towards the first shift lever 11, so that the first shift lever 11 is locked by the interlock pin 31. At the same time, when the second shift lever 21 moves to the left to the second gear position to the left of the second neutral position, the second shift lever 21 is locked by the second elastic locking pin 51.

[0074] Reference Figure 8 As shown, when the transmission shifts from third gear to fourth gear, the second drive 22 drives the second shift lever 21 to move to the right to the second engagement position to the right of the second neutral position. During this process, the first shift lever 11 is locked by the interlocking pin 31. At the same time, after the second shift lever 21 moves to the right to the second engagement position to the right of the second neutral position, the second shift lever 21 is locked by the second elastic locking pin 51.

[0075] In some embodiments of this utility model, reference is made to Figures 1-8 As shown, the shifting device 10 also includes a housing 6, in which the first shifting mechanism 1, the second shifting mechanism 2 and the interlocking mechanism 3 are at least partially installed.

[0076] The housing 6 can support and protect the first shift mechanism 1, the second shift mechanism 2 and the interlock mechanism 3, so as to improve the stability and reliability of the shift device 10.

[0077] Specifically, the first drive motor 121, the first lead screw 122, and the first guide rod 123 of the first shift mechanism 1 can all be installed inside the housing 6, the first shift lever 11 passes through the housing 6, and the first drive motor 121 is installed on the outside of the housing 6, so as to facilitate the assembly and maintenance of the first shift mechanism 1.

[0078] The second drive motor 221, the second lead screw 222, and the second guide rod 223 of the second shift mechanism 2 can all be installed inside the housing 6. The second shift lever 21 passes through the housing 6, and the second drive motor 221 is installed on the outside of the housing 6 to facilitate the assembly and maintenance of the second shift mechanism 2.

[0079] Reference Figure 3 As shown, the housing 6 may have a connecting hole 611 extending in the second direction. The interlocking pin 31 of the interlocking mechanism 3 passes through the connecting hole 611 and is guided and engaged with the connecting hole 611 in the second direction. The connecting hole 611 allows the interlocking pin 31 to move freely in the second direction, so as to realize the function of selectively locking the first shift lever 11 and the second shift lever 21 by the interlocking pin 31.

[0080] Reference Figure 3 As shown, the first elastic locking pin 41 of the first gear lock 4 is installed inside the housing 6. The first gear lock 4 also includes a first self-locking nut 42, which is detachably connected to the housing 6. The first elastic locking pin 41 can abut against the first self-locking nut 42 in a second direction. The first elastic locking pin 41 can be installed and maintained by removing the first self-locking nut 42.

[0081] The second elastic locking pin 51 of the second position locking device 5 is installed inside the housing 6. The second position locking device 5 also includes a second self-locking nut 52, which is detachably connected to the housing 6. The second elastic locking pin 51 can abut against the second self-locking nut 52 in the second direction. The second elastic locking pin 51 can be installed and maintained by removing the second self-locking nut 52.

[0082] In some embodiments of this utility model, reference is made to Figure 9 As shown, the housing 6 has a partition wall 61 located between the first shift lever 11 and the second shift lever 21, and the partition wall 61 has a connecting hole 611. The interlocking mechanism 3 includes an interlocking pin 31, a first elastic element 32, and a second elastic element 33. The interlocking pin 31 is movably inserted into the connecting hole 611 along the axial direction. The interlocking pin 31 has a first protrusion 311 and a second protrusion 312. The first protrusion 311 is located on one side of the partition wall 61, and the second protrusion 312 is located on the other side of the partition wall 61. In the axial direction of the connecting hole 611, the first elastic element 32 abuts against the first protrusion 311 and the partition wall 61, and the second elastic element 33 abuts against the second protrusion 312 and the partition wall 61.

[0083] The partition wall 61 is located between the first shift lever 11 and the second shift lever 21. The partition wall 61 separates the first shift lever 11 and the second shift lever 21 within the housing 6. The partition wall 61 also reinforces the housing 6 and supports the interlocking mechanism 3. The interlocking mechanism 3 includes an interlocking pin 31, a first elastic element 32, and a second elastic element 33. Through the action of the first elastic element 32 and the second elastic element 33 on the interlocking pin 31, the interlocking pin 31 is quickly released during gear shifting, thereby further improving shifting efficiency and reducing wear on the interlocking pin 31, the first shift lever 11, and the second shift lever 21, thus extending the service life of the shifting device 10.

[0084] Specifically, when the first shift lever 11 is in the first neutral position and the second shift lever 21 is in the second neutral position, the forces exerted by the first elastic element 32 and the second elastic element 33 on the interlocking pin 31 are equal in magnitude and opposite in direction. The interlocking pin 31 is located in the middle position between the first shift lever 11 and the second shift lever 21, and the locking engagement with the first shift lever 11 and the second shift lever 21 is released.

[0085] When the first shift lever 11 moves out of the first neutral position, the transmission will be engaged or has already been engaged in a low gear. The interlock pin 31 is pushed backward by the first shift lever 11 and locks against the second shift lever 21 in the second neutral position. The first elastic element 32 is compressed by the first protrusion 311. Subsequently, when the first shift lever 11 moves to the first neutral position, the transmission is not engaged in a low gear. Under the elastic restoring force of the first elastic element 32, the interlock pin 31 quickly returns to the intermediate position, thereby quickly releasing the interlock pin 31 from locking the second shift lever 21. The transmission can then quickly engage a high gear and reduce wear between the interlock pin 31 and the second shift lever 21.

[0086] When the second shift lever 21 moves out of the second neutral position, the transmission will be engaged or has already been engaged in a higher gear. The interlock pin 31 is pushed forward by the second shift lever 21 and locks against the first shift lever 11 in the first neutral position. The second elastic element 33 is compressed by the second protrusion 312. Subsequently, when the second shift lever 21 moves to the second neutral position, the transmission is not engaged in a higher gear. Under the restoring force of the second elastic element 33, the interlock pin 31 quickly returns to the middle position, thereby quickly releasing the interlock pin 31 from locking the first shift lever 11. The transmission can then quickly engage a lower gear and reduce wear between the interlock pin 31 and the first shift lever 11.

[0087] In some embodiments, the first elastic element 32 and the second elastic element 33 are both return springs sleeved on the interlocking pin 31.

[0088] In other embodiments, the first elastic element 32 and the second elastic element 33 may also be rubber rings or gas springs.

[0089] In some embodiments, the diameter of the first protrusion 311 and the second protrusion 312 is larger than the inner diameter of the connecting hole 611. The first protrusion 311 and the second protrusion 312 can prevent the interlocking pin 31 from coming out of the connecting hole 611, thereby improving the reliability of the interlocking mechanism 3.

[0090] According to the embodiment of the present invention, the shifting device 10 has a first shifting mechanism 1 and a second shifting mechanism 2 arranged in parallel. The shifting device 10 has a compact structure to save space and facilitate vehicle installation. The shifting device 10 does not require a gear selection mechanism, resulting in shorter and more efficient gear shifting. The interlocking pin 31 of the interlocking mechanism 3 is a mechanical structure and can achieve an interlocking function. The interlocking pin 31 has a simple structure, low cost, and high reliability. The first elastic locking pin 41 of the first gear position lock 4 and the second elastic locking pin 51 of the second gear position lock 5 are also mechanical structures and can achieve a self-locking function. The first elastic locking pin 41 and the second elastic locking pin 51 have simple structures, low cost, and high reliability. The movement trajectories of the first shift lever 11 and the second shift lever 21 are both linear, resulting in high shifting efficiency. Both the first driver 12 and the second driver 22 can be constructed as ball screw structures, allowing for controllable stroke of the first shift lever 11 and the second shift lever 21, resulting in high shifting accuracy.

[0091] According to another embodiment of the present invention, the electric drive bridge includes the shifting device 10 of the above embodiment.

[0092] The electric drive axle includes power components such as a drive motor and a transmission. The drive motor can transmit power to the wheels through the transmission. The shifting device 10 can be installed on the transmission of the electric drive axle to adjust the gears of the transmission.

[0093] According to the electric drive axle of the present utility model embodiment, the first shifting mechanism 1 and the second shifting mechanism 2 of the shifting device 10 can work independently. When switching gears in the transmission, the gear selection time can be compressed, thereby helping to reduce the power interruption time. The interlocking mechanism 3 can selectively lock the first shifting mechanism 1 and the second shifting mechanism 2 to avoid gear conflict and ensure the reliability of the shifting device 10.

[0094] The vehicle according to another embodiment of the present invention includes the electric drive axle of the above embodiment.

[0095] According to the vehicle of the present utility model embodiment, the first shift mechanism 1 and the second shift mechanism 2 of the shift device 10 can work independently. When switching gears in the transmission, the gear selection time can be compressed, thereby helping to reduce the power interruption time. The interlock mechanism 3 can selectively lock the first shift mechanism 1 and the second shift mechanism 2 to avoid gear conflict and ensure the reliability of the shift device 10.

[0096] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0097] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A gear shifting device, characterized in that, include: The first shift mechanism (1) includes a first shift lever (11) and a first driver (12). The first driver (12) is used to drive the first shift lever (11) to move along a first direction so that the first shift lever (11) moves to a first neutral position or a first gear position. The second shift mechanism (2) is arranged opposite to the first shift mechanism (1) in the second direction. The second shift mechanism (2) includes a second shift lever (21) and a second driver (22). The second driver (22) is used to drive the second shift lever (21) to move along the first direction so that the second shift lever (21) moves to the second neutral position or the second gear position. The interlocking mechanism (3) locks with the second shift lever (21) in the second neutral position when the first shift lever (11) moves out of the first neutral position; when the first shift lever (11) moves to the first neutral position, the interlocking mechanism (3) releases the locking engagement with the second shift lever (21); when the second shift lever (21) moves out of the second neutral position, the interlocking mechanism (3) locks with the first shift lever (11) in the first neutral position; when the second shift lever (21) moves to the second neutral position, the interlocking mechanism (3) releases the locking engagement with the first shift lever (11).

2. The gear shifting device according to claim 1, characterized in that, The first shift lever (11) has a first interlocking surface (111), the first interlocking surface (111) has a first flat portion (1111) and a first locking groove portion (1112), the second shift lever (21) has a second interlocking surface (211), the second interlocking surface (211) has a second flat portion (2111) and a second locking groove portion (2112), and the interlocking mechanism (3) is configured as an interlocking pin (31) that moves freely in the second direction; In the second direction, the first interlocking surface (111) and the second interlocking surface (211) are at least partially opposite each other, the length of the interlocking pin (31) is L, the distance between the first flat portion (1111) and the second flat portion (2111) is D1, the distance between the first flat portion (1111) and the second locking groove portion (2112) is D2, the distance between the second flat portion (2111) and the first locking groove portion (1112) is D3, and the distance between the first locking groove portion (1112) and the second locking groove portion (2112) is D4, satisfying the relationship: D1 < L = D2 = D3 < D4.

3. The shifting device according to claim 1, characterized in that, The shifting device also includes: First gear lock (4), which selectively locks the first shift lever (11); Second gear lock (5) selectively locks the second shift lever (21).

4. The shifting device according to claim 3, characterized in that, The first shift lever (11) has a plurality of first locking grooves (112) arranged at intervals along the first direction. The first gear lock (4) includes a first elastic locking pin (41). The first elastic locking pin (41) elastically presses against the first shift lever (11) in the second direction. When the first shift lever (11) is in the first gear position and the first neutral position, the first elastic locking pin (41) inserts into a corresponding first locking groove (112) to lock the first shift lever (11) in the first direction. The second shift lever (21) has a plurality of second locking grooves (212) spaced apart along the first direction. The second gear lock (5) includes a second elastic locking pin (51). The second elastic locking pin (51) elastically presses against the second shift lever (21) in the second direction. When the second shift lever (21) is in the second gear position and the second neutral position, the second elastic locking pin (51) inserts into a corresponding second locking groove (212) to lock the second shift lever (21) in the first direction.

5. The shifting device according to claim 4, characterized in that, In the first direction, the locking force of the first elastic locking pin (41) on the first shift lever (11) is less than the driving force of the first driver (12) on the first shift lever (11), and the locking force of the second elastic locking pin (51) on the second shift lever (21) is less than the driving force of the second driver (22) on the second shift lever (21).

6. The gear shifting device according to claim 1, characterized in that, The first driver (12) includes: a first drive motor (121), a first lead screw (122) and a first guide rod (123). The first lead screw (122) and the first guide rod (123) both extend along the first direction. The first drive motor (121) is connected to the first lead screw (122) in a transmission connection. The first shift lever (11) is threadedly engaged with the first lead screw (122). The first shift lever (11) is also guidedly engaged with the first guide rod (123). The second driver (22) includes: a second drive motor (221), a second lead screw (222), and a second guide rod (223). The second lead screw (222) and the second guide rod (223) both extend along the first direction. The second drive motor (221) is connected to the second lead screw (222) in a transmission connection. The second shift lever (21) is threadedly engaged with the second lead screw (222). The second shift lever (21) is also guidedly engaged with the first guide rod (123).

7. The gear shifting device according to claim 1, characterized in that, There are two first gear positions, and in the first direction, the first neutral position is located between the two first gear positions. There are also two second gear positions, and in the first direction, the second neutral position is located between the two first gear positions.

8. The shifting device according to any one of claims 1-7, characterized in that, The shifting device further includes a housing (6), wherein the first shifting mechanism (1), the second shifting mechanism (2) and the interlocking mechanism (3) are at least partially installed in the housing (6).

9. An electric drive bridge, characterized in that, Includes the shifting device according to any one of claims 1-8.

10. A vehicle, characterized in that, Includes the electric drive bridge according to claim 9.

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