Speed change device and vehicle having the same

Abstract

The utility model provides a kind of speed changer and vehicle with it, wherein, speed changer includes: motor has motor shaft;First output shaft is coaxially connected with motor shaft;First planetary gear set is rotatably arranged in shell, and the first sun gear of first planetary gear set is connected with first output shaft;First clutch is set on shell, and can be combined or separated with the first ring gear of first planetary gear set;Second sun gear of second planetary gear set is connected with third planetary gear of third planetary gear set, and third planetary gear of third planetary gear set is connected with first planetary gear of first planetary gear set;Differential is set on shell, and transmission cooperation with second planetary gear of second planetary gear;Second output shaft is transmission cooperation with differential;First output shaft, first sun gear, second sun gear and second output shaft are coaxially arranged, and first output shaft and second output shaft are driven by differential.The technical scheme of the application effectively solves the problem that transmission occupies larger space.

Description

Technical Field

[0001] This utility model relates to the field of gearbox technology, and more specifically, to a gearbox device and a vehicle having the same. Background Technology

[0002] The transmission adjusts the engine's output torque and speed to meet the needs of the car under different driving conditions. By changing the gear combination, the transmission enables the vehicle to accelerate, decelerate, reverse, and maintain stable driving.

[0003] In related technologies, two-speed transmissions are based on fixed-shaft shift forks or clutch shifting, and the two-speed transmissions are set with parallel shafts, resulting in a large outer envelope of the two-speed transmission and poor overall vehicle integration. Utility Model Content

[0004] The main objective of this invention is to provide a transmission device and a vehicle having the same, in order to solve the problem of large space occupation of gearboxes in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a transmission device is provided, comprising: a housing; a motor disposed on the housing, the motor having a motor shaft; a first output shaft coaxially connected to the motor shaft; a first planetary gear set rotatably disposed within the housing, the first sun gear of the first planetary gear set being connected to the first output shaft; a first clutch disposed on the housing and capable of engaging or disengaging with the first ring gear of the first planetary gear set; a second planetary gear set and a third planetary gear set, the second sun gear of the second planetary gear set being connected to the third planet gear of the third planetary gear set, and the third planet gear of the third planetary gear set being connected to the first planet gear of the first planetary gear set; a differential gear disposed on the housing and drivingly engaging with the second planet gear of the second planetary gear set; and a second output shaft drivingly engaging with the differential gear; wherein the first output shaft, the first sun gear, the second sun gear, and the second output shaft are coaxially arranged, and both the first output shaft and the second output shaft are driven by the differential gear.

[0006] Furthermore, the first sun gear is rotatably mounted on the first output shaft, and the first planet gear is disposed between the outer circumference of the first sun gear and the inner circumference of the first gear ring, and meshes with both the first sun gear and the first gear ring.

[0007] Furthermore, the second planetary gear set includes a second ring gear disposed on the housing, a second sun gear rotatably disposed on the first output shaft, and a second planet gear disposed between the outer circumference of the second sun gear and the inner circumference of the second ring gear, and meshing with both the second sun gear and the second ring gear.

[0008] Furthermore, the differential includes a differential housing, a first transmission gear, a second transmission gear, a fourth planetary gear, and a third output shaft. The first transmission gear, the second transmission gear, the fourth planetary gear, and the third output shaft are all disposed inside the differential housing. The first transmission gear is disposed on the first output shaft, the second transmission gear is disposed on the second output shaft, and the second planetary gear is fixedly connected to the differential housing.

[0009] Furthermore, the transmission also includes a second clutch, a third planetary gear set including a planet carrier and a third ring gear, a third planet gear meshing with the third ring gear, a second clutch mounted on the housing, a second clutch engaging or disengaging with the third ring gear, and a planet carrier connected to a second sun gear.

[0010] Furthermore, the third planetary row is located between the first and second planetary rows.

[0011] Furthermore, the inner diameter of the third gear ring is smaller than the inner diameter of the second gear ring.

[0012] Furthermore, the third planetary gear is coaxially arranged with the first planetary gear.

[0013] Furthermore, the first clutch has a first engaged state and a first disengaged state. When the first clutch is in the first engaged state, the first clutch engages with the first gear ring. The second clutch has a second engaged state and a second disengaged state. When the second clutch is in the second engaged state, the second clutch engages with the third gear ring.

[0014] According to another aspect of the present invention, a vehicle is provided, including a transmission device, wherein the transmission device is the aforementioned transmission device.

[0015] The transmission device, utilizing the technical solution of this utility model, includes a housing, a motor, a first output shaft, a first planetary gear set, a first clutch, a second planetary gear set, a differential, and a second output shaft. When the motor shaft rotates, the first sun gear can rotate. The rotation of the first sun gear drives the first planetary gear to rotate, which in turn drives the third planetary gear to rotate, which in turn drives the second sun gear to rotate, which in turn drives the second planetary gear to rotate. The rotation of the second planetary gear transmits power to the differential, enabling the differential to drive the first and second output shafts to rotate. The first clutch can engage or disengage with the first ring gear, thereby controlling the first ring gear to rotate relative to the housing or remain stationary relative to the housing. The first output shaft, the first sun gear, the second sun gear, and the second output shaft are coaxially arranged, which reduces the space occupied by the transmission device. Therefore, the technical solution of this application effectively solves the problem of the large space occupied by the gearbox. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of an embodiment of the speed change device according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 A schematic diagram of a transmission device in which the first clutch is in the first open state and the second clutch is in the second engaged state;

[0019] Figure 3 It shows Figure 1 A schematic diagram of a transmission device in which the first clutch is in a first engaged state and the second clutch is in a second disengaged state.

[0020] The above figures include the following reference numerals:

[0021] 10. Housing; 20. Motor; 21. Stator; 22. Rotor; 30. First output shaft; 40. First planetary gear set; 41. First sun gear; 42. First ring gear; 43. First planetary gear; 50. First clutch; 60. Second planetary gear set; 61. Second sun gear; 62. Second planetary gear; 63. Second ring gear; 70. Differential; 71. Differential housing; 72. First transmission gear; 73. Second transmission gear; 74. Fourth planetary gear; 75. Third output shaft; 80. Second output shaft; 90. Third planetary gear set; 91. Third planetary gear; 92. Planet carrier; 93. Third ring gear; 100. Second clutch. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] like Figures 1 to 3 As shown, the transmission device in this embodiment includes: a housing 10, a motor 20, a first output shaft 30, a first planetary gear set 40, a first clutch 50, a second planetary gear set 60, a differential 70, a second output shaft 80, and a third planetary gear set 90. The motor 20 is mounted on the housing 10 and has a motor shaft. The first output shaft 30 is coaxially connected to the motor shaft. The first planetary gear set 40 is rotatably mounted inside the housing 10, and its first sun gear 41 is connected to the first output shaft 30. The first clutch 50 is mounted on the housing 10 and can engage or disengage with the first ring gear 42 of the first planetary gear set 40. The second sun gear 61 of the second planetary gear set 60 is connected to the third planet gear 91 of the third planetary gear set 90, and the third planet gear 91 of the third planetary gear set 90 is connected to the first planet gear 43 of the first planetary gear set 40. The differential 70 is mounted on the housing 10 and is in transmission engagement with the second planet gear 62 of the second planetary gear set 60. The second output shaft 80 is in transmission engagement with the differential 70. The first output shaft 30, the first sun gear 41, the second sun gear 61, and the second output shaft 80 are coaxially arranged, and both the first output shaft 30 and the second output shaft 80 are driven by the differential 70.

[0026] Using the technical solution of this embodiment, the transmission device includes a housing 10, a motor 20, a first output shaft 30, a first planetary gear set 40, a first clutch 50, a second planetary gear set 60, a differential 70, and a second output shaft 80. When the motor shaft rotates, the first sun gear 41 can rotate. The rotation of the first sun gear 41 can drive the first planetary gear 43 to rotate, the rotation of the first planetary gear 43 can drive the third planetary gear 91 to rotate, and then the third planetary gear 91 can drive the second sun gear 61 to rotate. The rotation of the second sun gear 61 can drive the second planetary gear 62 to rotate, and the rotation of the second planetary gear 62 can transmit power to the differential 70, so that the differential 70 can drive the first output shaft 30 and the second output shaft 80 to rotate. The first clutch 50 can engage or disengage with the first ring gear 42, and thus the first clutch 50 can control the first ring gear 42 to rotate relative to the housing 10, or to remain stationary relative to the housing 10. The first output shaft 30, the first sun gear 41, the second sun gear 61, and the second output shaft 80 are coaxially arranged, which can reduce the space occupied by the transmission device. Therefore, the technical solution of this embodiment effectively solves the problem of the large space occupied by the gearbox.

[0027] It should be noted that the transmission device in this embodiment is a coaxial two-speed gearbox. The second planetary gear 62 is coaxially arranged with the first planetary gear 43. The arrangement of the first planetary gear set 40, the second planetary gear set 60, and the third planetary gear set 90 allows for better adjustment of the speed ratio.

[0028] The motor 20 includes a stator 21 and a rotor 22, and the first output shaft 30 is connected to the rotor 22.

[0029] like Figure 1 As shown, in this embodiment, the first sun gear 41 is rotatably mounted on the first output shaft 30, and the first planetary gear 43 is disposed between the outer circumference of the first sun gear 41 and the inner circumference of the first ring gear 42, meshing with both the first sun gear 41 and the first ring gear 42. The rotatable mounting of the first sun gear 41 on the first output shaft 30 facilitates the rotation of the first output shaft 30 relative to the first sun gear 41, thereby preventing the first sun gear 41 from interfering with the rotation of the first output shaft 30. The first sun gear 41 can drive the first planetary gear 43 to rotate relative to the first ring gear 42.

[0030] It should be noted that the outer diameter of the first sun gear 41 is larger than the outer diameter of the second sun gear 61.

[0031] like Figure 1As shown, in this embodiment, the second planetary gear set 60 includes a second ring gear 63, which is disposed on the housing 10. A second sun gear 61 is rotatably disposed on the first output shaft 30. Second planet gears 62 are disposed between the outer circumference of the second sun gear 61 and the inner circumference of the second ring gear 63, and mesh with both the second sun gear 61 and the second ring gear 63. The second sun gear 61 can rotate relative to the first output shaft 30, facilitating the first planet gear 43 to drive the second sun gear 61 to rotate, thereby enabling the second sun gear 61 to drive the second planet gear 62 to rotate relative to the second ring gear 63.

[0032] like Figure 1 As shown, in this embodiment, the differential 70 includes a differential housing 71, a first transmission gear 72, a second transmission gear 73, a fourth planetary gear 74, and a third output shaft 75. The first transmission gear 72, second transmission gear 73, fourth planetary gear 74, and third output shaft 75 are all disposed within the differential housing 71. The first transmission gear 72 is disposed on the first output shaft 30, the second transmission gear 73 is disposed on the second output shaft 80, and the second planetary gear 62 is fixedly connected to the differential housing 71. The second planetary gear 62 can drive the third output shaft 75 to rotate, which in turn drives the fourth planetary gear 74 to rotate. The fourth planetary gear 74 can drive the second transmission gear 73 and the first transmission gear 72 to rotate, which in turn drives the third output shaft 75 to rotate, and the first transmission gear 72 drives the first output shaft 30 to rotate.

[0033] It should be noted that the rotation axis of the fourth planetary gear 74 is perpendicular to the axis of the second output shaft 80.

[0034] like Figure 1 As shown, in this embodiment, the transmission device further includes a second clutch 100, and the third planetary gear set 90 includes a planet carrier 92 and a third ring gear 93. The third planetary gear 91 meshes with the third ring gear 93. The second clutch 100 is mounted on the housing 10, and the second clutch 100 can engage or disengage with the third ring gear 93. The planet carrier 92 is connected to the second sun gear 61. The first planetary gear 43 can drive the third planetary gear 91 to rotate relative to the third ring gear 93. The second clutch 100 can engage or disengage with the third ring gear 93, allowing the third ring gear 93 to rotate relative to the housing 10, or remain stationary relative to the housing 10.

[0035] like Figure 1 As shown, in this embodiment, the third planetary gear set 90 is located between the first planetary gear set 40 and the second planetary gear set 60. This arrangement facilitates the arrangement of the first planetary gear set 40, the second planetary gear set 60, and the third planetary gear set 90, allowing them to occupy less space, and consequently, the housing 10 to occupy less space.

[0036] like Figure 1 As shown, in this embodiment, the inner diameter of the third gear ring 93 is smaller than the inner diameter of the second gear ring 63. This arrangement facilitates the switching of the transmission between different gear positions.

[0037] like Figure 1 As shown, in this embodiment, the third planetary gear 91 is coaxially arranged with the first planetary gear 43. This arrangement reduces the space occupied by the first and third planetary gear sets on the housing 10, thereby reducing the space required for the transmission and making its structure more compact. This reduces the weight of the housing 10, further lowering the weight and cost of the transmission and improving component integration.

[0038] like Figure 2 and Figure 3 As shown, in this embodiment, the first clutch 50 has a first engaged state and a first disengaged state. When the first clutch 50 is in the first engaged state, it engages with the first gear ring 42. The second clutch 100 has a second engaged state and a second disengaged state. When the second clutch 100 is in the second engaged state, it engages with the third gear ring 93. By switching the first clutch 50 between the first engaged state and the first disengaged state, and by switching the second clutch 100 between the second engaged state and the second disengaged state, the transmission device can switch between different transmission gears.

[0039] It should be noted that when the transmission is in first gear, the first clutch 50 is in the first open state, and the second clutch 100 is in the second engaged state. When the transmission is in second gear, the first clutch 50 is in the first engaged state, and the second clutch 100 is in the second open state. That is, by switching the states of the first clutch 50 and the second clutch 100, the two pure electric gears can be switched.

[0040] The speed change device in this embodiment achieves a high degree of component integration, and features a compact structure, fewer parts, high integration, multiple functions, good assembly convenience, low cost, and light weight.

[0041] The vehicle of this embodiment includes a transmission device, which is the transmission device described above. The first output shaft 30, the first sun gear 41, the second sun gear 61, and the second output shaft 80 of the aforementioned transmission device are coaxially arranged, which allows the first planetary gear set 40 and the second planetary gear set 60 to occupy less radial space, thereby allowing the housing 10 to occupy less radial space. The vehicle equipped with the aforementioned transmission device also possesses the advantages described above.

[0042] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0044] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A speed-changing device, characterized in that, include: Shell (10); A motor (20) is mounted on the housing (10), and the motor (20) has a motor shaft; The first output shaft (30) is coaxially connected to the motor shaft; The first planetary gear set (40) is rotatably disposed within the housing (10), and the first sun gear (41) of the first planetary gear set (40) is connected to the first output shaft (30); A first clutch (50) is disposed on the housing (10) and is capable of engaging or disengaging with the first gear ring (42) of the first planetary gear set (40); The second planetary gear (60) and the third planetary gear (90) are connected, wherein the second sun gear (61) of the second planetary gear (60) is connected to the third planetary gear (91) of the third planetary gear (90), and the third planetary gear (91) of the third planetary gear (90) is connected to the first planetary gear (43) of the first planetary gear (40). A differential (70) is mounted on the housing (10) and engages with the second planetary gear (62) of the second planetary gear set (60) in a transmission relationship. The second output shaft (80) is in drive engagement with the differential (70); The first output shaft (30), the first sun gear (41), the second sun gear (61) and the second output shaft (80) are coaxially arranged, and the first output shaft (30) and the second output shaft (80) are both driven by the differential (70).

2. The speed change device according to claim 1, characterized in that, The first sun gear (41) is rotatably mounted on the first output shaft (30), and the first planet gear (43) is disposed between the outer circumference of the first sun gear (41) and the inner circumference of the first gear ring (42), and meshes with both the first sun gear (41) and the first gear ring (42).

3. The speed change device according to claim 1 or 2, characterized in that, The second planetary gear set (60) includes a second ring gear (63) disposed on the housing (10), a second sun gear (61) rotatably disposed on the first output shaft (30), and a second planet gear (62) disposed between the outer circumference of the second sun gear (61) and the inner circumference of the second ring gear (63), and meshing with both the second sun gear (61) and the second ring gear (63).

4. The speed change device according to claim 3, characterized in that, The differential (70) includes a differential housing (71), a first transmission gear (72), a second transmission gear (73), a fourth planetary gear (74), and a third output shaft (75). The first transmission gear (72), the second transmission gear (73), the fourth planetary gear (74), and the third output shaft (75) are all disposed inside the differential housing (71). The first transmission gear (72) is disposed on the first output shaft (30), the second transmission gear (73) is disposed on the second output shaft (80), and the second planetary gear (62) is fixedly connected to the differential housing (71).

5. The speed change device according to claim 3, characterized in that, The transmission device further includes a second clutch (100), the third planetary gear set (90) further includes a planet carrier (92) and a third ring gear (93), the third planetary gear (91) meshes with the third ring gear (93), the second clutch (100) is disposed on the housing (10), the second clutch (100) engages or disengages with the third ring gear (93), and the planet carrier (92) is connected to the second sun gear (61).

6. The speed change device according to claim 5, characterized in that, The third planetary array (90) is located between the first planetary array (40) and the second planetary array (60).

7. The speed change device according to claim 5, characterized in that, The inner diameter of the third gear ring (93) is smaller than the inner diameter of the second gear ring (63).

8. The speed change device according to claim 5, characterized in that, The third planetary gear (91) is coaxially arranged with the first planetary gear (43).

9. The speed change device according to claim 5, characterized in that, The first clutch (50) has a first engaged state and a first disengaged state. When the first clutch (50) is in the first engaged state, the first clutch (50) is engaged with the first gear ring (42). The second clutch (100) has a second engaged state and a second disengaged state. When the second clutch (100) is in the second engaged state, the second clutch (100) is engaged with the third gear ring (93).

10. A vehicle, comprising a transmission device, characterized in that, The speed change device is the speed change device according to any one of claims 1 to 9.

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