Gear selecting and shifting mechanism, gearbox and vehicle

Abstract

The embodiment of the utility model provides a gear selecting and shifting mechanism, a gearbox and a vehicle. The gear selecting and shifting mechanism comprises a gear selecting executing mechanism, a gear shifting executing mechanism, a driving shaft and a plurality of shifting forks. The shifting forks are arranged on the driving shaft in a sleeving mode at intervals, the driving shaft is provided with a plurality of protruding clamping pieces, and one clamping piece corresponds to one shifting fork; the gear selecting executing mechanism is used for driving the driving shaft to rotate so that one clamping piece can be connected to one shifting fork in a clamped mode. The gear shifting executing mechanism is used for driving the driving shaft to move in the axial direction so that the driving shaft can drive one shifting fork to move in the axial direction of the driving shaft. Therefore, the driving shaft is driven by the gear selecting executing mechanism to rotate, so that the axial movement of the driving shaft can be switched among the movement of driving the shifting forks, the switching of various gear adjustment is realized, the overall structure is simple, the number of parts is small, the cost is reduced, and the miniaturization of products is facilitated.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a gear shifting mechanism, a transmission, and a vehicle. Background Technology

[0002] With the development of technology, people have placed increasingly higher demands on vehicle performance. Among these demands, the gear shifting mechanism, which is the part of the transmission used to adjust gear positions, plays a crucial role.

[0003] In the prior art, gear shifting mechanisms typically include multiple sets of drive fork assemblies. Each drive fork assembly includes a drive motor, a drive shaft, and a shift fork connected in sequence. Thus, multiple drive motors drive their corresponding shift forks via the drive shafts, allowing the shift forks to be positioned in different locations to achieve gear adjustment.

[0004] However, during their research on existing technologies, the inventors discovered that the multiple sets of drive fork assemblies were spaced apart, resulting in a large shift gap. Furthermore, the use of multiple drive motors was costly and not conducive to the miniaturization of the product. Utility Model Content

[0005] In view of the above problems, the present invention is proposed to provide a gear shifting mechanism, transmission and vehicle that overcomes or at least partially solves the above problems.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows:

[0007] This application provides a gear selection and shifting mechanism, which includes a gear selection actuator, a shifting actuator, a drive shaft, and multiple shift forks;

[0008] Multiple shift forks are spaced and sleeved on the drive shaft, and the drive shaft is provided with multiple protruding snap-fit ​​members, one of which is correspondingly disposed to one of the shift forks;

[0009] The gear selection actuator is used to drive the drive shaft to rotate, so that one of the latching members engages with one of the shift forks;

[0010] The shift actuator is used to drive the drive shaft to move axially, so that the drive shaft drives one of the shift forks to move axially along the drive shaft.

[0011] Optionally, the shift fork is provided with a connecting plate near the locking member, and the locking member is locked onto the connecting plate.

[0012] Optionally, the connecting plate has a groove on the side facing the drive shaft, and the snap-fit ​​element snaps into the groove.

[0013] Optionally, a plurality of the snap-fit ​​components are spaced apart on the drive shaft, and the extension directions of each snap-fit ​​component are different.

[0014] Optionally, two adjacent snap-fit ​​members extend along a first direction and a second direction, respectively, and the angle between the first direction and the second direction is any value between 90° and 110°.

[0015] Optionally, the number of the shift forks is two, namely a first shift fork and a second shift fork;

[0016] The number of the snap-fit ​​components is two, namely the first snap-fit ​​component and the second snap-fit ​​component;

[0017] The rotation of the drive shaft causes the first latching member to engage with the first shift fork, or the rotation of the drive shaft causes the second latching member to engage with the second shift fork.

[0018] Optionally, the shifting actuator includes a first driving member, and the drive shaft is provided with a connecting portion. The first driving member is connected to the connecting portion so that the first driving member drives the drive shaft to move axially.

[0019] Optionally, the gear selection actuator includes a second driving member connected to one end of the drive shaft, so that the second driving member drives the drive shaft to rotate.

[0020] This application also proposes a gearbox, which includes a housing and the aforementioned gear selection and shifting mechanism;

[0021] The drive shaft, first shift fork, and second shift fork of the gear shifting mechanism are disposed inside the housing, and the first drive member of the gear shifting mechanism is disposed outside the housing, with a portion of the first drive member extending into the housing so that the first drive member is connected to the drive shaft.

[0022] This application also proposes a vehicle that includes the aforementioned transmission, or the aforementioned gear shifting mechanism.

[0023] In this embodiment, the gear selection / shifting mechanism includes a gear selection actuator, a shifting actuator, a drive shaft, and multiple shift forks. The multiple shift forks are spaced apart and sleeved on the drive shaft. The drive shaft has multiple protruding locking members, one of which corresponds to one shift fork. The gear selection actuator drives the drive shaft to rotate, causing one of the locking members to engage with one of the shift forks. The shifting actuator drives the drive shaft to move axially, causing the drive shaft to move one of the shift forks axially. Thus, by driving the drive shaft to rotate through the gear selection actuator, one locking member on the drive shaft engages with a corresponding shift fork, allowing the axial movement of the drive shaft to switch between the movements performed by the various shift forks. For example, when one of the shift forks needs to be adjusted, the shifting mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork to move axially along the drive shaft, thus achieving one type of shift adjustment. When another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving another type of shift adjustment. Similarly, when yet another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving yet another type of shift adjustment. Thus, the drive shaft can drive multiple shift forks to move independently, achieving switching between various shift adjustments. The overall structure is simple, with fewer parts, reducing the large shifting gaps that would result from using multiple sets of drive shift fork assemblies spaced apart. It also eliminates the need for multiple drive motors to drive multiple shift forks, reducing costs and facilitating product miniaturization. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of a gear shifting mechanism according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the gear shifting mechanism described in the embodiments of this application applied to a gearbox.

[0027] Reference numerals: 10 - drive shaft; 20 - first shift fork; 30 - second shift fork; 11 - first locking member; 12 - second locking member; 21 - connecting plate; 40 - first driving member; 13 - connecting part; 50 - second driving member; 41 - shift shaft. Detailed Implementation

[0028] The embodiments of this utility model will now be described in detail. 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 are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0029] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Reference Figures 1 to 2 The diagram shows a structural schematic of a gear shifting mechanism according to an embodiment of this application. The gear shifting mechanism may specifically include: a gear selection actuator, a gear shifting actuator, a drive shaft 10, and multiple shift forks.

[0033] Multiple shift forks are spaced and sleeved on the drive shaft 10. The drive shaft 10 is provided with multiple protruding snap-fit ​​members, one of which is correspondingly set to one of the shift forks.

[0034] The gear selection actuator is used to drive the drive shaft 10 to rotate, so that one of the latching members is engaged with one of the shift forks;

[0035] The shifting actuator is used to drive the drive shaft 10 to move axially, so that the drive shaft 10 drives one of the shift forks to move axially along the drive shaft 10.

[0036] In this embodiment, the gear selection actuator drives the drive shaft 10 to rotate, causing one of the latching members on the drive shaft 10 to engage with one of the corresponding shift forks. This allows the axial movement of the drive shaft 10 to switch between the movements of the various shift forks. For example, when gear adjustment is needed for one shift fork, the gear selection actuator drives the drive shaft 10 to rotate, causing the corresponding latching member to engage with that shift fork. The drive shaft 10 moves axially, causing the shift fork to move axially along the drive shaft 10, thus achieving one type of gear adjustment. When gear adjustment is needed for another shift fork, the gear selection actuator drives the drive shaft 10 to rotate, causing the corresponding latching member to engage with that shift fork. The drive shaft 10 moves axially, causing the shift fork to move axially along the drive shaft 10, thus achieving another type of gear adjustment. When gear adjustment is needed for yet another shift fork, the gear selection actuator drives the drive shaft 10 to rotate, causing the corresponding latching member to engage with that shift fork. The drive shaft 10 moves axially, causing the shift fork to move axially along the drive shaft 10, thus achieving yet another type of gear adjustment. Thus, the drive shaft 10 can drive multiple shift forks to move, realizing the switching of multiple gear adjustments. The overall structure is simple and has fewer parts, which reduces the large shifting gap caused by using multiple sets of drive shift fork assemblies set at intervals. It eliminates the need to use multiple drive motors to drive multiple shift forks, reducing costs and also facilitating the miniaturization design of the product.

[0037] For example, in the embodiments of this application, the number of shift forks can be two, three, four, or six, etc., which can correspond to four, six, eight, or twelve gear adjustments, etc. The specific number of shift forks set in the embodiments of this application is not limited.

[0038] In this embodiment, for example, the snap-fit ​​component can be a pin. A pin hole is provided on the drive shaft 10 near the shift fork. The pin is inserted into the pin hole to install the snap-fit ​​component, which is simple and convenient. By rotating the drive shaft 10, when the pin aligns with the connection position of the shift fork, the pin snaps into the shift fork. The axial movement of the drive shaft 10 can then drive one of the corresponding shift forks to move axially together with the drive shaft 10. Alternatively, the snap-fit ​​component can also be a protrusion or a hook, etc. The specific type of snap-fit ​​component is not limited in this embodiment.

[0039] Optionally, in this embodiment, a connecting plate 21 is provided near the snap-fit ​​member, and the snap-fit ​​member is snapped into the connecting plate 21. Thus, by snapping the snap-fit ​​member into the connecting plate 21, the drive shaft 10 can move axially, and the snap-fit ​​member can drive the connecting plate 21 to move. The connecting plate 21 then drives the shift fork and the drive shaft 10 to slide together axially along the drive shaft 10, resulting in better reliability and stability.

[0040] For example, in this embodiment, the number of connecting plates 21 can be two, three, four, or six, etc., which can correspond to the number of shift forks. This embodiment does not limit the specific number of connecting plates 21. For example, the connecting plates 21 can extend horizontally, extend vertically, or be tilted, etc., and can be set according to actual needs. This embodiment does not limit the specific arrangement of the connecting plates 21.

[0041] Optionally, in this embodiment, the connecting plate 21 has a groove on the side facing the drive shaft 10, and the snap-fit ​​component snaps into the groove. This groove provides a more stable and reliable snap-fit ​​between the snap-fit ​​component and the connecting plate 21, reducing the risk of the snap-fit ​​component detaching from the connecting plate 21 and improving the stability and reliability of the snap-fit ​​component when connected to the shift fork via the connecting plate 21.

[0042] For example, in this embodiment, the groove is adapted to the snap-fit ​​component. The cross-sectional shape of the groove can be U-shaped, C-shaped, rectangular, square, circular, elliptical, etc., and can be set according to the shape of the snap-fit ​​component. The width of the groove can be equal to or greater than the width of the snap-fit ​​component. In this embodiment, the specific shape and size of the groove and the snap-fit ​​component are not limited.

[0043] Optionally, in this embodiment, multiple latching members are spaced apart on the drive shaft 10, and the extension directions of each latching member are different. This avoids interference between other latching members and their corresponding shift forks when one latching member is latched onto its corresponding shift fork. That is, the extension directions of each latching member have an included angle. When one latching member is latched onto the connecting plate 21 of its corresponding shift fork, the other latching members and their corresponding shift fork connecting plates 21 are misaligned and separated, preventing the drive shaft 10 from affecting the other shift forks when it moves one shift fork.

[0044] In this embodiment, optionally, two adjacent latching members extend along a first direction and a second direction, respectively, with the angle between the first direction and the second direction being any value between 90° and 110°. This effectively and reliably avoids interference between multiple latching members when they are respectively latched onto multiple forks. For example, the angle between the extension directions of two adjacent latching members can be 90°, perpendicular to each other. Alternatively, the angle between the extension directions of two adjacent latching members can be 100°, 110°, 80°, 70°, etc. This embodiment does not limit the specific value of the angle between the first and second directions of the extension of two adjacent latching members.

[0045] Optionally, in this embodiment, taking two shift forks, namely a first shift fork 20 and a second shift fork 30, as an example, the first shift fork 20 and the second shift fork 30 are slidably connected to the drive shaft 10, and the drive shaft 10 can rotate relative to the first shift fork 20 and the second shift fork 30; the drive shaft 10 can be selectively connected to the first shift fork 20 or the second shift fork 30 by rotation; the drive shaft 10 is connected to the first shift fork 20 so that the drive shaft 10 drives the first shift fork 20 to move along the axial direction of the drive shaft 10, or the drive shaft 10 is connected to the second shift fork 30 so that the drive shaft 10 drives the second shift fork 30 to move along the axial direction of the drive shaft 10. Specifically, when the gear selection actuator drives the drive shaft 10 to rotate and selectively connect to the first shift fork 20, the drive shaft 10 moves along the axial direction, and the drive shaft 10 drives the first shift fork 20 to slide together with the drive shaft 10 along the axial direction of the drive shaft 10. When the gear selection actuator drives the drive shaft 10 to rotate and selects the connection to the second shift fork 30, the drive shaft 10 moves axially, and the drive shaft 10 drives the second shift fork 30 to slide together with the drive shaft 10 along the axial direction of the drive shaft 10. This realizes the commonly used scheme of achieving two shifting modes and four gear adjustments through the first shift fork 20 and the second shift fork 30.

[0046] Optionally, in this embodiment, the drive shaft 10 is provided with a protruding first latching member 11 and a second latching member 12. Rotation of the drive shaft 10 causes the first latching member 11 to latch onto the first shift fork 20, or rotation of the drive shaft 10 causes the second latching member 12 to latch onto the second shift fork 30. Thus, the first latching member 11 enables a selectable connection between the drive shaft 10 and the first shift fork 20, and the second latching member 12 enables a selectable connection between the drive shaft 10 and the second shift fork 30.

[0047] In this embodiment, the drive shaft 10 rotates to engage either the first latching member 11 with the first shift fork 20 or the second latching member 12 with the second shift fork 30. This allows the axial movement of the drive shaft 10 to switch between moving the first shift fork 20 or the second shift fork 30. Specifically, when shifting gears via the first shift fork 20, the drive shaft 10 rotates to engage the first latching member 11 with the first shift fork 20. At this time, the second latching member 12 disengages from the second shift fork 30. Thus, the axial movement of the drive shaft 10 can cause the first shift fork 20 and the drive shaft 10 to move together axially, allowing the first shift fork 20 to be in different positions for gear shifting. When shifting gears via the second shift fork 30, the drive shaft 10 rotates to engage the second latching member 12 with the second shift fork 30. At this time, the first latching member 11 disengages from the first shift fork 20, achieving a decoupling design between the drive shaft 10 and the first shift fork 20 and the second shift fork 30. In this way, the axial movement of the drive shaft 10 can drive the second shift fork 30 to move together with the drive shaft 10 along the axial direction, thereby enabling the second shift fork 30 to be in different positions to achieve gear shifting.

[0048] For example, in this embodiment, the first locking member 11 can be a pin. A pin hole is provided on the drive shaft 10 near the first shift fork 20. The first locking member 11 is installed by inserting the pin into the pin hole, which is simple and convenient. By rotating the drive shaft 10, when the pin corresponds to the connection position of the first shift fork 20, the pin is locked into the first shift fork 20. Then, the drive shaft 10 moves axially, which can drive the first shift fork 20 and the drive shaft 10 to move axially together. In addition, the first locking member 11 can also be a protrusion or a hook, etc. The specific type of the first locking member 11 is not limited in this embodiment.

[0049] Similarly, the second locking member 12 can also be a pin. A pin hole is provided on the drive shaft 10 near the second shift fork 30. The pin is inserted into the pin hole to install the second locking member 12, which is simple and convenient. By rotating the drive shaft 10, when the pin corresponds to the connection position of the second shift fork 30, the pin is locked into the second shift fork 30. Then, the drive shaft 10 moves axially, which can drive the second shift fork 30 and the drive shaft 10 to move axially together. In addition, the second locking member 12 can also be a protrusion or a hook, etc. The specific type of the second locking member 12 is not limited in this embodiment.

[0050] In this embodiment, for example, the first shift fork 20 may be provided with a first bearing, which can slide relative to the drive shaft 10. Specifically, the first shift fork 20 can slide relative to the drive shaft 10 along its axial direction, and the drive shaft 10 can rotate relative to the first shift fork 20 in the radial direction, that is, the drive shaft 10 can rotate about its axis. For example, the first bearing can be a needle roller bearing or a ball bearing, which can reduce the sliding friction between the first shift fork 20 and the drive shaft 10, so that the first shift fork 20 and the drive shaft 10 can achieve smoother sliding or rotation.

[0051] Similarly, the second shift fork 30 may be equipped with a second bearing, which can slide relative to the drive shaft 10. Specifically, the second shift fork 30 can slide axially relative to the drive shaft 10, and the drive shaft 10 can rotate radially relative to the second shift fork 30, that is, the drive shaft 10 can rotate about its axis. For example, the second bearing can be a needle roller bearing or a ball bearing, which can reduce the sliding friction between the second shift fork 30 and the drive shaft 10, so that the second shift fork 30 and the drive shaft 10 can achieve smoother sliding or rotation.

[0052] Optionally, in this embodiment, the connecting plate 21 may include a first connecting plate and a second connecting plate. The first connecting plate is provided near the drive shaft 10 for the first shift fork 20, and the second connecting plate is provided near the drive shaft 10 for the second shift fork 30. Rotation of the drive shaft 10 causes the first locking member 11 to engage with the first connecting plate, or rotation of the drive shaft 10 causes the second locking member 12 to engage with the second connecting plate. Thus, by the first locking member 11 engaging with the first connecting plate, the axial movement of the drive shaft 10 can cause the first shift fork 20 and the drive shaft 10 to slide together along the axial direction of the drive shaft 10. By the second locking member 12 engaging with the second connecting plate, the axial movement of the drive shaft 10 can cause the second shift fork 30 and the drive shaft 10 to slide together along the axial direction of the drive shaft 10.

[0053] For example, in the embodiments of this application, the first connecting plate can extend horizontally, extend vertically, or be inclined. The specific arrangement of the first connecting plate is not limited in the embodiments of this application. Similarly, the second connecting plate can extend horizontally, extend vertically, or be inclined. The specific arrangement of the second connecting plate is not limited in the embodiments of this application.

[0054] Optionally, in this embodiment, the first connecting plate has a first groove, and the second connecting plate has a second groove; the first snap-fit ​​member 11 snaps into the first groove, or the second snap-fit ​​member 12 snaps into the second groove. Thus, the first groove provides a more stable and reliable snap-fit ​​effect between the first snap-fit ​​member 11 and the first connecting plate, improving the stability when the first snap-fit ​​member 11 is connected to the first shift fork 20; and the second groove provides a more stable and reliable snap-fit ​​effect between the second snap-fit ​​member 12 and the second connecting plate, improving the stability when the second snap-fit ​​member 12 is connected to the second shift fork 30.

[0055] For example, in this embodiment, the first groove is adapted to the first snap-fit ​​member 11. The cross-sectional shape of the first groove can be U-shaped, C-shaped, rectangular, square, circular, elliptical, etc., and can be set according to the shape of the first snap-fit ​​member 11. The width of the first groove can be equal to or greater than the width of the first snap-fit ​​member 11. In this embodiment, the specific shape and size of the first groove and the first snap-fit ​​member 11 are not limited.

[0056] Similarly, the second groove is adapted to the second latching member 12. The cross-sectional shape of the second groove can also be U-shaped, C-shaped, rectangular, square, circular, elliptical, etc., and can be set according to the shape of the second latching member 12. The width of the second groove can be equal to or greater than the width of the second latching member 12. In this embodiment, the specific shape and size of the second groove and the second latching member 12 are not limited.

[0057] Optionally, in this embodiment, the first latching member 11 and the second latching member 12 are spaced apart on the drive shaft 10, and the extending direction of the first latching member 11 intersects with the extending direction of the second latching member 12. This avoids interference between the first latching member 11 latching onto the first shift fork 20 and the second latching member 12 latching onto the second shift fork 30. That is, the extending directions of the first latching member 11 and the second latching member 12 form an angle. When the first latching member 11 latches onto the first connecting plate of the first shift fork 20, the second latching member 12 is misaligned and separated from the second connecting plate of the second shift fork 30, preventing the drive shaft 10 from affecting the second shift fork 30 when it drives the first shift fork 20 to move. Similarly, when the second latching member 12 latches onto the second connecting plate of the second shift fork 30, the first latching member 11 is misaligned and separated from the first connecting plate of the first shift fork 20, preventing the drive shaft 10 from affecting the first shift fork 20 when it drives the second shift fork 30 to move.

[0058] In this embodiment, optionally, the first latching member 11 extends along a first direction, and the second latching member 12 extends along a second direction. The angle between the first and second directions is any value between 90° and 110°, which effectively and reliably avoids interference between the first latching member 11 latching onto the first shift fork 20 and the second latching member 12 latching onto the second shift fork 30. For example, the angle between the extension direction of the first latching member 11 and the extension direction of the second latching member 12 can be 90°, perpendicular to each other. In addition, the angle between the extension direction of the first latching member 11 and the extension direction of the second latching member 12 can also be 100°, 110°, 80°, 70°, etc. The specific value of the angle between the first and second directions is not limited in this embodiment.

[0059] Optionally, in this embodiment, the shifting actuator includes a first driving member 40, and the drive shaft 10 is provided with a connecting portion 13. The first driving member 40 is connected to the connecting portion 13 so that the first driving member 40 drives the drive shaft 10 to move axially. In this way, by moving the first driving member 40 along the axial direction of the drive shaft 10, the drive shaft 10 is driven to move axially. The first driving member 40 can provide a relatively reliable driving force for the axial movement of the drive shaft 10, thereby driving the first shift fork 20 or the second shift fork 30 to move axially through the drive shaft 10.

[0060] In this embodiment, the first driving member 40 is the power input end, and the ends of the first shift fork 20 and the second shift fork 30 furthest from the drive shaft 10 are the power output ends. The first driving member 40 can directly drive the first shift fork 20 and the second shift fork 30 to move axially through the same drive shaft 10, avoiding the need to drive the first shift fork 20 and the second shift fork 30 to move through different drive shafts 10. This makes the distance between the power input end and the power output end closer, which is beneficial for more precise control of the first shift fork 20 and the second shift fork 30.

[0061] For example, in this embodiment, the connecting part 13 can be a snap-fit ​​ring, and the first driving member 40 snaps onto the snap-fit ​​ring. For instance, there are two snap-fit ​​rings, spaced apart, and the shift shaft 41 of the first driving member 40 snaps onto the two snap-fit ​​rings, thus connecting the first driving member 40 and the drive shaft 10. The structure is simple and assembly is easy. Furthermore, the first driving member 40 can also be welded to the connecting part 13. This embodiment does not limit the specific type of the connecting part 13 or the specific connection method between the first driving member 40 and the drive shaft 10.

[0062] For example, in this embodiment, the first driving component 40 can be a motor. The motor can have a motor shaft, a guide shaft, and a shift shaft 41. The motor shaft is positioned above the guide shaft, and the axial direction of the guide shaft is parallel to the axial direction of the drive shaft 10. The shift shaft 41 is perpendicular to the guide shaft. The first driving component 40 can drive the shift shaft 41 to move along the axial direction of the guide shaft. Alternatively, the first driving component 40 can also be an electric motor or a motor, etc. The specific type of the first driving component 40 is not limited in this embodiment. Typically, a gearbox has a sensor for reading the free clearance value. This embodiment, without changing the distance between the motor shaft and the drive shaft 10, shortens the difference in the free clearance value read by the sensor due to the fit clearance, which is also beneficial for precise control.

[0063] In this embodiment, optionally, the gear selection actuator includes a second driving member 50, which is connected to one end of the drive shaft 10 to drive the drive shaft 10 to rotate. Thus, the second driving member 50 provides a relatively stable and reliable rotational force to the drive shaft 10. The rotation of the second driving member 50 can drive the first locking member 11 and the second locking member 12 to rotate, adjusting the connection relationship between the drive shaft 10 and the first shift fork 20 and the second shift fork 30. Specifically, the first locking member 11 is locked into the first shift fork 20, and the second locking member 12 is disengaged from the second shift fork 30. Alternatively, the second locking member 12 is locked into the second shift fork 30, and the first locking member 11 is disengaged from the first shift fork 20.

[0064] In this embodiment, a first drive unit 40 is used as a shift motor, and a second drive unit 50 is used as a selector motor, eliminating the need for two shift motors. Typically, the shifting force of a shift motor is more than twice that of a selector motor. Therefore, this application changes the two-shift-motor scheme to a combination of one shift motor and one selector motor, reducing power requirements and also helping to lower production costs.

[0065] For example, in this embodiment, the second driving component 50 can be a motor. The motor and the drive shaft 10 can be connected by internal and external splines, so that the motor can provide driving force to rotate the drive shaft 10 and allow the drive shaft 10 to slide relative to the motor along the axial direction. In addition, the second driving component 50 can also be a rotary motor or an electric motor, etc. The specific type of the second driving component 50 is not limited in this embodiment.

[0066] In this embodiment, for example, in the default initial state, the first latching member 11 can latch onto the first shift fork 20. At this time, the second driving member 50 is not working, and the first driving member 40 can drive the first shift fork 20 to move left and right along the axial direction of the drive shaft 10, thereby adjusting the first shift fork 20 to different gear positions. When it is necessary to control the second shift fork 30 for gear adjustment, the second driving member 50 rotates, causing the first latching member 11 to separate from the first shift fork 20, and the second latching member 12 to latch onto the second shift fork 30. Then, the first driving member 40 can drive the second shift fork 30 to move left and right along the axial direction of the drive shaft 10, thereby adjusting the second shift fork 30 to different gear positions.

[0067] In summary, the gear shifting mechanism of this application embodiment may include at least the following advantages:

[0068] In this embodiment, the gear selection / shifting mechanism includes a gear selection actuator, a shifting actuator, a drive shaft, and multiple shift forks. The multiple shift forks are spaced apart and sleeved on the drive shaft. The drive shaft has multiple protruding locking members, one of which corresponds to one shift fork. The gear selection actuator drives the drive shaft to rotate, causing one of the locking members to engage with one of the shift forks. The shifting actuator drives the drive shaft to move axially, causing the drive shaft to move one of the shift forks axially. Thus, by driving the drive shaft to rotate through the gear selection actuator, one locking member on the drive shaft engages with a corresponding shift fork, allowing the axial movement of the drive shaft to switch between the movements performed by the various shift forks. For example, when one of the shift forks needs to be adjusted, the shifting mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork to move axially along the drive shaft, thus achieving one type of shift adjustment. When another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving another type of shift adjustment. Similarly, when yet another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving yet another type of shift adjustment. Thus, the drive shaft can drive multiple shift forks to move independently, achieving switching between various shift adjustments. The overall structure is simple, with fewer parts, reducing the large shifting gaps that would result from using multiple sets of drive shift fork assemblies spaced apart. It also eliminates the need for multiple drive motors to drive multiple shift forks, reducing costs and facilitating product miniaturization.

[0069] This application also proposes a gearbox, which includes a housing and a shifting mechanism. The drive shaft 10, first shift fork 20, and second shift fork 30 of the shifting mechanism are disposed within the housing. A first drive member 40 of the shifting mechanism is disposed outside the housing, with a portion of the first drive member 40 extending into the housing to connect to the drive shaft 10. Furthermore, the second drive member 50 can also be disposed within the housing. Since the first drive member 40 provides shifting force and has a large structural volume, placing most of its structure outside the housing avoids occupying a large space within the housing. Conversely, the second drive member 50 provides shifting force and has a smaller structural volume, allowing it to be disposed within the housing's internal space, improving space utilization and facilitating the optimization of the gearbox's volume structure and overall vehicle layout.

[0070] Specifically, in this embodiment, the first drive member 40 is provided with a shift shaft 41, which extends into the housing and is connected to the connection portion 13 of the drive shaft 10. That is, only the shift shaft 41 of the first drive member 40 needs to extend into the housing to connect the first drive member 40 to the drive shaft 10, while other structures such as the motor shaft and guide rod of the first drive member 40 can be located outside the housing, avoiding the first drive member 40 occupying a large space within the housing. Typically, gearboxes are equipped with sensors to read free clearance values. This embodiment, without changing the distance between the motor shaft and the first drive shaft 10, shortens the difference in free clearance values ​​read by the sensor due to the fit clearance, which is beneficial for precise control.

[0071] In this embodiment, the gearbox includes a first gear assembly and a second gear assembly. A first shift fork 20, with its end away from the drive shaft 10, is slidably connected to the first gear assembly. The first shift fork 20 moves axially along the drive shaft 10, connecting to different positions on the first gear assembly, thereby enabling gear shifting. A second shift fork 30, with its end away from the drive shaft 10, is slidably connected to the second gear assembly. The second shift fork 30 moves axially along the drive shaft 10, connecting to different positions on the second gear assembly, thereby enabling gear shifting.

[0072] In summary, the gearbox described in the embodiments of this application may include at least the following advantages:

[0073] In this embodiment, the gearbox includes a housing and the aforementioned gear selection and shifting mechanism. The drive shaft, first shift fork, and second shift fork of the gear selection and shifting mechanism are disposed within the housing. A first drive member of the gear selection and shifting mechanism is disposed outside the housing, with a portion of the first drive member extending into the housing to connect to the drive shaft. The gear selection and shifting mechanism includes a gear selection actuator, a shifting actuator, a drive shaft, and multiple shift forks. Multiple shift forks are spaced apart and sleeved on the drive shaft. The drive shaft has multiple protruding locking members, one of which corresponds to one shift fork. The gear selection actuator drives the drive shaft to rotate, causing one of the locking members to engage with one of the shift forks. The shifting actuator drives the drive shaft to move axially, causing the drive shaft to move one of the shift forks axially. Thus, by driving the drive shaft to rotate through the gear selection actuator, one locking member on the drive shaft engages with a corresponding shift fork, allowing the axial movement of the drive shaft to switch between movements performed by the various shift forks. For example, when one of the shift forks needs to be adjusted, the shifting mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork to move axially along the drive shaft, thus achieving one type of shift adjustment. When another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving another type of shift adjustment. Similarly, when yet another shift fork needs to be adjusted, the same mechanism drives the drive shaft to rotate, causing the corresponding engaging piece to engage with that shift fork. The drive shaft moves axially, driving the shift fork axially along the drive shaft, thus achieving yet another type of shift adjustment. Thus, the drive shaft can drive multiple shift forks to move independently, achieving switching between various shift adjustments. The overall structure is simple, with fewer parts, reducing the large shifting gaps that would result from using multiple sets of drive shift fork assemblies spaced apart. It also eliminates the need for multiple drive motors to drive multiple shift forks, reducing costs and facilitating product miniaturization.

[0074] This application also provides a vehicle, which includes the aforementioned transmission or the aforementioned gear shifting mechanism.

[0075] For example, in the embodiments of this application, the vehicle may include small cars, medium-sized cars, sedans, trucks, trailers, CDVs (Car Derived Vans), MPVs (multi-Purpose Vehicles), SUVs (Sport Utility Vehicles), etc. The specific type of vehicle is not limited in the embodiments of this application.

[0076] The vehicle described in this application embodiment may include at least the following advantages:

[0077] In this embodiment, the vehicle includes the aforementioned gearbox, or the aforementioned gear selection and shifting mechanism. The gearbox includes a housing and the aforementioned gear selection and shifting mechanism. The drive shaft, first shift fork, and second shift fork of the gear selection and shifting mechanism are disposed within the housing. A first drive member of the gear selection and shifting mechanism is disposed outside the housing, and a portion of the first drive member extends into the housing to connect to the drive shaft. The gear selection and shifting mechanism includes a gear selection actuator, a shifting actuator, a drive shaft, and multiple shift forks. The multiple shift forks are spaced apart and sleeved on the drive shaft. The drive shaft has multiple protruding locking members, one of which corresponds to one shift fork. The gear selection actuator drives the drive shaft to rotate so that one of the locking members engages with one of the shift forks. The shifting actuator drives the drive shaft to move axially so that the drive shaft drives one of the shift forks to move axially along the drive shaft. In this way, the gear selection actuator drives the drive shaft to rotate, causing one of the locking components on the drive shaft to engage with a corresponding shift fork. This allows the axial movement of the drive shaft to switch between the movements of the various shift forks. For example, when gear adjustment is needed for one shift fork, the gear selection actuator drives the drive shaft to rotate, causing the corresponding locking component to engage with that shift fork. The drive shaft moves axially, causing the shift fork to move axially along the drive shaft, thus achieving one type of gear adjustment. When gear adjustment is needed for another shift fork, the gear selection actuator drives the drive shaft to rotate, causing the corresponding locking component to engage with that shift fork. The drive shaft moves axially, causing the shift fork to move axially along the drive shaft, thus achieving another type of gear adjustment. When gear adjustment is needed for yet another shift fork, the gear selection actuator drives the drive shaft to rotate, causing the corresponding locking component to engage with that shift fork. The drive shaft moves axially, causing the shift fork to move axially along the drive shaft, thus achieving yet another type of gear adjustment. Thus, the drive shaft can drive multiple shift forks to move separately, realizing the switching of multiple gear adjustments. The overall structure is simple and has fewer parts, which reduces the large shifting gap caused by using multiple sets of drive shift fork assemblies with separate intervals. It also eliminates the need to use multiple drive motors to drive multiple shift forks, reducing costs and facilitating the miniaturization of the product.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "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.

[0079] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A selection shift mechanism characterized by, The selecting and shifting mechanism comprises a selecting actuator, a shifting actuator, a driving shaft (10) and a plurality of shift forks; The plurality of shift forks are arranged on the driving shaft (10) in a sleeving manner, and the driving shaft (10) is provided with a plurality of protruding clamping members, one of which is arranged corresponding to one of the shift forks; The selecting actuator is used to drive the driving shaft (10) to rotate, so that one of the clamping members is clamped on one of the shift forks; The shifting actuator is used to drive the driving shaft (10) to move along the axial direction, so that the driving shaft (10) drives one of the shift forks to move along the axial direction of the driving shaft (10).

2. The selecting and shifting mechanism according to claim 1, characterized in that The shift fork is provided with a connecting plate (21) close to the clamping member, and the clamping member is clamped on the connecting plate (21).

3. The selecting and shifting mechanism according to claim 2, characterized in that The connecting plate (21) is provided with a groove on the side facing the driving shaft (10), and the clamping member is clamped in the groove.

4. The selecting and shifting mechanism according to claim 1, characterized in that The plurality of clamping members are arranged on the driving shaft (10) in a spaced manner, and the extension directions of the clamping members are different from each other.

5. The selecting and shifting mechanism according to claim 4, characterized in that The extension directions of the adjacent two clamping members are the first direction and the second direction respectively, and the included angle between the first direction and the second direction is any value in the range of 90-110°.

6. The selecting and shifting mechanism according to claim 1, characterized in that The number of the shift forks is two, which are a first shift fork (20) and a second shift fork (30); The number of the clamping members is two, which are a first clamping member (11) and a second clamping member (12); The driving shaft (10) is rotated to clamp the first clamping member (11) on the first shift fork (20), or the driving shaft (10) is rotated to clamp the second clamping member (12) on the second shift fork (30).

7. The selecting and shifting mechanism according to claim 1, characterized in that The shifting actuator comprises a first driving member (40), the driving shaft (10) is provided with a connecting portion (13), and the first driving member (40) is connected to the connecting portion (13) to drive the driving shaft (10) to move along the axial direction.

8. The selecting and shifting mechanism according to claim 1, characterized in that The selecting actuator comprises a second driving member (50), the second driving member (50) is connected to one end of the driving shaft (10) to drive the driving shaft (10) to rotate.

9. A gearbox characterized in that, The gearbox comprises a housing and the selecting and shifting mechanism according to any one of claims 1-8; The driving shaft (10), the first shift fork (20) and the second shift fork (30) of the selecting and shifting mechanism are arranged in the housing, the first driving member (40) of the selecting and shifting mechanism is arranged outside the housing, and part of the first driving member (40) extends into the housing to connect the first driving member (40) to the driving shaft (10).

10. A vehicle characterized by comprising: The vehicle comprises the gearbox according to claim 9, or the selecting and shifting mechanism according to any one of claims 1-8.

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