Assembly

Abstract

In an assembly having a power transmission mechanism therein, the inter-stage ratio at the time of shifting can be reduced. This assembly is provided with: an input element; an output element; and a gear device in which a first rotation portion, a second rotation portion, a third rotation portion, and a fourth rotation portion are arranged in this order on a velocity diagram. The input element can be connected with the first rotating part and can be connected with the second rotating part, the output element is connected with the third rotating part, and the fourth rotating part can be switched between a rotating state and a non-rotating state. The gear device is provided with a first planetary gear mechanism and a second planetary gear mechanism, the first rotating part is composed of a fourth rotating element, the second rotating part is composed of a first rotating element and a fifth rotating element which are combined, and the third rotating part is composed of a second rotating element and a sixth rotating element which are combined. The fourth rotating part is composed of a third rotating element.

Description

Technical Field

[0001] The present invention relates to a component having a power transmission mechanism therein. Background Art

[0002] Patent Document 1 discloses an automatic transmission assembly for electric vehicles with two forward speeds. In this assembly, by switching the engagement states of two friction clutches, a first speed and a second speed with a speed ratio (=input speed / output speed) lower than the first speed can be achieved.

[0003] Patent Documents 2 to 4 also disclose similar components.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent document 1: German Patent Application Publication No. 102019116360

[0007] Patent document 2: German Patent Application Publication No. 102019119951

[0008] Patent Document 3: Chinese Patent No. 106195194

[0009] Patent Document 4: Chinese Utility Model Specification No. 206000959

[0010] Problems to be solved by the invention

[0011] In an automatic transmission assembly for an electric vehicle with two forward gears, the greater the gear ratio of the first gear, the greater the torque amplification effect caused by deceleration. Therefore, the greater the gear ratio of the first gear, the smaller the maximum torque of the motor can be, and a smaller motor can be selected. In contrast, the smaller the gear ratio of the second gear, the lower the motor speed when achieving a certain vehicle speed, which is beneficial when cruising at high speed.

[0012] However, if the speed ratios of 1st gear and 2nd gear are set separately based on the above-mentioned design concept, the inter-stage ratio (=1st gear speed ratio / 2nd gear speed ratio) when switching between 1st gear and 2nd gear becomes larger, and the speed change shock becomes larger. Summary of the invention

[0013] The present invention has been made in view of such a technical problem, and an object of the present invention is to reduce the step ratio during speed change in a unit having a power transmission mechanism therein.

[0014] According to one aspect of the present invention, there is provided a component comprising:

[0015] Input components;

[0016] Output components;

[0017] The gear device includes a first rotating part, a second rotating part, a third rotating part and a fourth rotating part arranged in sequence on a speed line diagram.

[0018] The input element is connectable with the first rotating part and is connectable with the second rotating part,

[0019] The output element is connected to the third rotating part,

[0020] The fourth rotating part can switch between a rotating state and a non-rotating state,

[0021] The gear device comprises:

[0022] a first planetary gear mechanism including a first rotating element, a second rotating element, and a third rotating element, wherein the second rotating element is disposed between the first rotating element and the third rotating element on a velocity line diagram;

[0023] The second planetary gear mechanism includes a fourth rotation element, a fifth rotation element, and a sixth rotation element, and the fifth rotation element is arranged between the fourth rotation element and the sixth rotation element on the speed line diagram,

[0024] The first rotating part is constituted by the fourth rotating element,

[0025] The second rotating part is composed of the first rotating element and the fifth rotating element.

[0026] The third rotating part is composed of the second rotating element and the sixth rotating element.

[0027] The fourth rotating portion is constituted by the third rotating element.

[0028] Effects of the Invention

[0029] According to the above aspect, three speed stages can be realized by switching the connection destination of the input element (either one or both of the first rotating part and the second rotating part) and the rotation state of the fourth rotating part. Since the inter-stage ratio becomes smaller, an appropriate speed ratio can be set according to the speed range. In addition, the speed ratio is 1 in the third gear, so the power transmission loss caused by the speed difference between the rotating parts can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of components of an embodiment of the present invention.

[0031] Figure 2 It is an engagement table showing the engagement state of each engagement element in each speed stage.

[0032] Figure 3 It is the velocity line graph of the component. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the definitions of terms used in this specification are as follows.

[0034] The term "unit" refers to an entire device having a power transmission mechanism such as a gear mechanism or a differential gear mechanism inside, and includes a motor unit having a motor and a power transmission mechanism, an automatic transmission unit, a speed reducer unit, and the like.

[0035] The "speed ratio" is the value obtained by dividing the input rotation speed of the component by the output rotation speed. The "input rotation" includes not only the rotation input to the component from the power source outside the component, but also the rotation input to the component from the power source inside the component.

[0036] The "step ratio" is the value obtained by dividing the larger speed ratio (for low speed) by the smaller speed ratio (for high speed) of the two speed ratios achieved by the assembly.

[0037] “Axial direction” refers to the axial direction of the rotating shaft of a component constituting an assembly. The component is a motor, a gear mechanism, a differential gear mechanism, etc. “Radial direction” refers to the radial direction starting from the central axis of the rotating shaft.

[0038] The “housing” refers to a housing that houses the motor, inverter, and power transmission mechanism, and is composed of one or more housings. The housing that houses the motor, the inverter, and the power transmission mechanism are formed in one piece, which is called “3 in 1”.

[0039] The term “electric motor” refers to a rotating electrical machine having a motor function, and may have a generator function in addition to the motor function.

[0040] "Element (component) A is connected to element (component) B" means that element A is connected to element B upstream or downstream in a manner that power can be transmitted between element A and element B. The input side of power is upstream, and the output side of power is downstream. It is not limited to the method of connecting element A to element B directly or via other components, and it can also be connected via a clutch or the like.

[0041] “Component A is coupled to component B” means that component A and component B are directly or indirectly connected via other components, so that component A and component B are integrated. In other words, it can also be said that component A and component B rotate as one. In addition, it can also be said that it means a state in which component A and component B are not connected via a brake or a clutch, and component A and component B are always connected.

[0042] “Element A is fixed to element B” includes both a method in which element A is directly fixed to element B and a method in which element A is fixed to element B via element C other than elements A and B. “Element A is fixed” means that element A is fixed to another element and is in a non-rotatable state.

[0043] “Element A and element B overlap when viewed in a specified direction” means that element A and element B are arranged in a specified direction (axial direction, radial direction, gravity direction, etc.), and when viewed from the specified direction, element A and element B at least partially overlap. It is synonymous with “element A and element B overlap in a specified direction”. When element A and element B overlap when viewed in the axial direction, element A is coaxial with element B. When element A and element B are depicted in a specified direction in the figure, it means that element A and element B overlap when viewed in the specified direction.

[0044] In contrast, “elements A and B do not overlap when viewed in a specified direction” means that elements A and B are not arranged in a specified direction (axial direction, radial direction, gravity direction, vehicle travel direction, etc.), and elements A and B do not have overlapping parts when viewed from the specified direction. It is synonymous with “elements A and B do not overlap in a specified direction”. When elements A and B are depicted as not being arranged in a specified direction in a figure, it means that elements A and B do not overlap when viewed in the specified direction.

[0045] “Element A is arranged between element B and element C when viewed in a specified direction” means that when viewed from a specified direction (axial direction, radial direction, gravity direction, etc.), element A is observed to be located between element B and element C. For example, when element B, element A, and element C are arranged in this order along the axial direction, element A can be observed to be between element B and element C when viewed in the radial direction, so it can be said that element A is located between element B and element C. Element A does not necessarily overlap with elements B and C when viewed in the axial direction. When element A is depicted as being between element B and element C in the figure, it means that element A is located between element B and element C when viewed in the specified direction.

[0046] “Element A is arranged on the axially outer side of element B” means that element A is arranged on one axial side or the other axial side of element B. In addition to the case where element A and element B overlap when observed in the axial direction, it also includes the case where element A and element B have different radial positions and element A and element B do not overlap.

[0047] “Element A is arranged radially outside (or inside) element B” means that the radial position of element A is further outside (or inside) than the radial position of element B. In addition to the case where element A and element B overlap when observed radially, it also includes the case where element A and element B have different axial positions and element A and element B do not overlap.

[0048] "Closely arranged" refers to a state in which two elements have an overlapping portion in axial or radial observation and no other element is clamped between the two elements. For example, "two engaging elements are closely arranged" means that no planetary gear mechanism is arranged between the two engaging elements. If no other element is depicted between element A and element B in the figure, it means that element A and element B are closely arranged.

[0049] "One side of the engaging element" and "the other side of the engaging element" refer to two elements contained in the engaging element, which cannot rotate relative to each other when the engaging element is in the engaged state, but can rotate relative to each other when the engaging element is in the released state. "One side of the engaging element" and "the other side of the engaging element" can be a combination of rotating elements or a combination of rotating elements and non-rotating elements. Usually, the former is called a clutch and the latter is called a brake. In addition, "one side of the engaging element" refers to either "one side of the engaging element" or "the other side of the engaging element".

[0050] Other terms are defined as appropriate in the main text of the specification.

[0051] Figure 1 1 is a schematic diagram showing the basic structure of a component 100 according to an embodiment of the present invention. Component 100 is a forward 3-speed automatic transmission component for electric vehicles that changes the speed of the rotation input to input element IN from an electric motor (not shown) as a power source at a speed ratio corresponding to the speed stage, and transmits it from output element OUT to a drive wheel (not shown). Input element IN and output element OUT are respectively composed of gears, rotating shafts, etc. The electric motor can switch between forward and reverse rotation, so the point that component 100 does not have a reverse stage is obviously different from the design concept of a vehicle component using an internal combustion engine as a power source.

[0052] The assembly 100 is a so-called three-in-one assembly that accommodates an input element IN, a gear device 2, first to third engagement elements CL1, CL2, B1, an output element OUT, and a motor and inverter (not shown) in a housing 1. The housing 1 is fixed to the vehicle so as not to rotate.

[0053] One side of the input element IN is connected to the output shaft of the motor, and the input element IN is rotated by the power input from the motor. The rotation speed of the input element IN is the input rotation speed of the assembly 100. The motor is electrically connected to a battery (not shown) outside the assembly 100 via an inverter, and receives power supply from the battery to function as a motor. In addition, the motor can also function as a generator.

[0054] The gear device 2 is configured by arranging the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 close to each other and coupling their rotating elements at two locations.

[0055] The first planetary gear mechanism PG1 is a double pinion planetary gear mechanism, which includes: a first sun gear S1 as a first rotating element, a first ring gear R1 as a second rotating element, a plurality of inner pinions (not shown), a plurality of outer pinions (not shown) meshing with the plurality of inner pinions, and a first planetary gear carrier C1 as a third rotating element that supports the plurality of inner pinions and the plurality of outer pinions and allows them to rotate freely. The first sun gear S1 meshes with the plurality of inner pinions, and the first ring gear R1 meshes with the plurality of outer pinions.

[0056] The second planetary gear mechanism PG2 is a single pinion planetary gear mechanism, which includes: a second sun gear S2 as a fourth rotation element, a plurality of second pinions (not shown), a second planetary gear carrier C2 as a fifth rotation element that supports the plurality of second pinions and allows them to rotate freely, and a second ring gear R2 as a sixth rotation element. The second sun gear S2 meshes with the plurality of second pinions, and the plurality of second pinions mesh with the second ring gear R2.

[0057] In the figure, D and S in parentheses next to the symbols PG1 and PG2 indicate that the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 are a double pinion planetary gear mechanism and a single pinion planetary gear mechanism, respectively.

[0058] The first sun gear S1 is coupled to the second planetary gear carrier C2. The first ring gear R1 is coupled to the second ring gear R2. In this way, by coupling the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 at two locations, the first rotating portion P1 is composed of the second sun gear S2, the second rotating portion P2 is composed of the first sun gear S1 and the second planetary gear carrier C2, the third rotating portion P3 is composed of the first ring gear R1 and the second ring gear R2, and the fourth rotating portion P4 is composed of the first planetary gear carrier C1.

[0059] The rotation speed of the output element OUT is the output rotation speed of the assembly 100 .

[0060] The first engagement element CL1 is a hydraulic or electric clutch. If the two parts of the first engagement element CL1 that are engaged when the first engagement element CL1 is in the engaged state are set as one side and the other side, one side is connected to the input element IN, and the other side is connected to the second rotating part P2 composed of the first sun gear S1 and the second planetary gear carrier C2. Therefore, if the first engagement element CL1 is engaged, the input element IN can be connected to the second rotating part P2 composed of the first sun gear S1 and the second planetary gear carrier C2.

[0061] The second engagement element CL2 is a hydraulic or electric clutch. If the two parts of the second engagement element CL2 that engage when the second engagement element CL2 is in the engaged state are set as one side and the other side, one side is connected to the input element IN, and the other side is connected to the first rotating part P1 formed by the second sun gear S2. Therefore, if the second engagement element CL2 is engaged, the input element IN can be connected to the first rotating part P1 formed by the second sun gear S2.

[0062] One side of the first engagement element CL1 and one side of the second engagement element CL2 are connected to the input element IN and rotate integrally, so they can be shared, that is, they can be configured as an integral component. For example, if the first engagement element CL1 and the second engagement element CL2 are respectively configured by a multi-plate clutch with a plurality of friction plates arranged between a drum and a hub, they can be configured as an integral component by forming the hub of the other side on the outer periphery of one drum. As a result, the number of components of the assembly 100 can be reduced.

[0063] The third engaging element B1 is a hydraulic or electric brake. If the two parts of the third engaging element B1 that are engaged when the third engaging element B1 is in the engaged state are set as one side and the other side, one side is connected to the fourth rotating part P4 formed by the first planetary gear carrier C1, and the other side is fixed to the housing 1. Therefore, if the third engaging element B1 is engaged, the fourth rotating part P4 formed by the first planetary gear carrier C1 can be fixed to the housing 1.

[0064] As the actuators of the first engagement element CL1 and the third engagement element B1, in addition to the actuators that are not easily restricted by the layout (such as the hydraulic actuators that supply the hydraulic pressure from the control valve assembly), the actuators that are easily restricted by the layout (such as the electric actuators that are fixed to the housing 1 etc. by the relationship of the reaction force and need to be connected to the power cable, and the hydraulic actuators that are mounted on the housing 1 etc. and need to be connected to the hydraulic pressure supply assembly through piping, etc.) can also be used. On the other hand, since the second engagement element CL2 is arranged on the inner peripheral side of the first engagement element CL1, it is preferable to use the actuators that are not easily restricted by the layout as the actuators of the second engagement element CL2.

[0065] The third engagement element B1 may also be constituted by a selectable one-way clutch. The selectable one-way clutch is constituted by a pair of ratchet mechanisms whose action states can be switched by an electric actuator and whose restricted rotation directions are different. When only one of the pair of ratchet mechanisms is actuated, it becomes a one-way clutch state, and when both of the pair of ratchet mechanisms are actuated, it becomes a clutch in an engaged state.

[0066] By providing these first to third engagement elements CL1, CL2, and B1, and engaging one of the first engagement element CL1 and the second engagement element CL2 and releasing the other, the input element IN can be selectively connected to the first rotating portion P1 formed by the second sun gear S2 or the second rotating portion P2 formed by the first sun gear S1 and the second planetary gear carrier S2. In addition, by engaging both the first engagement element CL1 and the second engagement element CL2, the input element IN can be connected to the first rotating portion P1 and the second rotating portion P2.

[0067] Furthermore, by changing the engagement state of the third engagement element B1, the fourth rotating portion P4 formed by the first carrier C1 can be switched between a rotating state and a non-rotating state.

[0068] In addition, when viewed in the radial direction, the first to third engaging elements CL1, CL2, and B1 are arranged on the axially outer side of the gear device 2. Since no engaging element is arranged between the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2, the layout freedom of the first to third engaging elements CL1, CL2, and B1 is increased, and the axial dimension of the assembly 100 can be reduced.

[0069] Furthermore, when viewed in the axial direction, the first to third engagement elements CL1, CL2, and B1 can overlap with the gear device 2. When overlapping them, the radial dimension of the assembly 100 can be reduced.

[0070] Figure 2 : is an engagement table showing the relationship between the engagement states of the first to third engagement elements CL1, CL2, and B1 and the speed stages realized in the assembly 100. In the table, a black circle indicates an engaged state, and no circle indicates a released state.

[0071] As shown in the engagement table, the first gear is achieved by engaging the second engagement element CL2 and the third engagement element B1 and releasing the first engagement element CL1. The second gear is achieved by engaging the first engagement element CL1 and the third engagement element B1 and releasing the second engagement element CL2. The third gear is achieved by engaging the first engagement element CL1 and the second engagement element CL2 and releasing the third engagement element B1.

[0072] Any speed change stage is achieved by engaging two elements among the first to third engagement elements CL1, CL2, and B1, and the released engagement element is one. In the case where the released engagement element, such as a multi-plate clutch, generates drag torque by contacting relative rotating parts even in the released state, the fewer the number of released engagement elements when the speed change stage is achieved, the less mechanical loss can be reduced. In the present embodiment, since the released engagement element is one in any speed change stage, even when the first to third engagement elements CL1, CL2, and B1 are used, the mechanical loss can be suppressed and the power consumption rate of the vehicle equipped with the assembly 100 can be improved.

[0073] in addition, Figure 3 : is a velocity diagram of the assembly 100. On the velocity diagram, the first to fourth rotational parts P1 to P4 are arranged in this order, and each rotational part corresponds to the vertical lines l1 to l4.

[0074] Since the first planetary gear mechanism PG1 is a double pinion planetary gear mechanism, the first ring gear R1 is disposed between the first sun gear S1 and the first planetary gear carrier C1. Since the second planetary gear mechanism PG2 is a single pinion planetary gear mechanism, the second planetary gear carrier C2 is disposed between the second sun gear S2 and the second ring gear R2.

[0075] When the first engagement element CL1 is engaged and the second engagement element CL2 is released, the input element IN is connected to the second rotating portion P2, so the vertical line l2 corresponds to the input element IN. Conversely, when the first engagement element CL1 is released and the second engagement element CL2 is engaged, the input element IN is connected to the first rotating portion P1, so the vertical line l1 corresponds to the input element IN.

[0076] The output element OUT is connected to the third rotating portion P3, so the vertical line l3 corresponds to the output element OUT.

[0077] The interval α1 between the vertical line l4 and the vertical line l3 when the interval between the vertical line l2 and the vertical line l4 is set to 1 is a value obtained by dividing the number of teeth of the first sun gear S1 by the number of teeth of the first ring gear R1. In addition, the interval α2 between the vertical line l2 and the vertical line l3 when the interval between the vertical line l1 and the vertical line l2 is set to 1 is a value obtained by dividing the number of teeth of the second sun gear S2 by the number of teeth of the second ring gear R2.

[0078] The speed diagram shows straight lines L1 to L3 corresponding to the respective speed stages. The rotation speeds of the respective rotating parts P1 to P4 in the respective speed stages are indicated by the ordinates of the intersections of the straight lines L1 to L3 corresponding to the respective speed stages and the vertical lines l1 to l4.

[0079] In the first gear, the second engagement element CL2 and the third engagement element B1 are engaged, and the first engagement element CL1 is released. As a result, the rotation speeds of the input element IN and the first rotating portion P1 are equal, and the rotation speed of the fourth rotating portion P4 becomes zero. Therefore, the straight line L1 corresponding to the first gear becomes a straight line passing through the point X3 and the point X2. The rotation speed of the output element OUT becomes the ordinate r1 of the intersection of the straight line L1 and the vertical line l3. Therefore, when the rotation speed of the input element IN is set to rin, the speed ratio in the first gear becomes rin / r1.

[0080] In the 2nd gear, the first engagement element CL1 and the third engagement element B1 are engaged, and the second engagement element CL2 is released. As a result, the rotation speeds of the input element IN and the second rotating part P2 are equal, and the rotation speed of the fourth rotating part P4 becomes zero. Therefore, the straight line L2 corresponding to the 2nd gear becomes a straight line passing through the points X1 and X2 with a greater inclination than the straight line L1. The rotation speed of the output element OUT becomes the ordinate of the intersection of the straight line L2 and the vertical line l3, i.e., r2. Therefore, when the rotation speed of the input element IN is set to rin, the speed ratio in the 2nd gear becomes rin / r2. Since r2 is greater than r1, the speed ratio of the 2nd gear is smaller than the speed ratio of the 1st gear.

[0081] In the third gear, the first engagement element CL1 and the second engagement element CL2 are engaged, and the third engagement element B1 is released. As a result, the rotation speeds of the input element IN, the first to fourth rotating parts P1 to P4, and the output element OUT are equal, so the straight line L3 corresponding to the third gear becomes a straight line passing through the point X3 and the point X1 with a zero inclination. Since the rotation speeds of the input element IN and the output element OUT are equal, the speed ratio in the third gear becomes 1, which is smaller than the speed ratios of the first gear and the second gear.

[0082] Therefore, in the assembly 100, three speed stages can be realized, so that the step ratio becomes smaller than that of the assembly with two forward speeds, and the shock during the speed change can be suppressed to be smaller than that of the assembly with two forward speeds. In addition, since the first to third gears can be used for low speed, medium speed, and high speed, respectively, an appropriate speed ratio can be set according to the speed range.

[0083] In addition, in the third gear, the speed ratio is 1. That is, since all the rotating parts P1 to P4 constituting the gear device 2 rotate at the same speed, the power transmission loss caused by the speed difference between the rotating parts can be reduced. Since the third gear for high-speed cruising is frequently used, a high power consumption rate improvement effect can be obtained by achieving a speed ratio of 1 in the third gear.

[0084] Next, the effects of the embodiment of the present invention will be described.

[0085] (1) Figure 1 In the example shown,

[0086] The assembly 100 comprises:

[0087] Input element IN;

[0088] Output element OUT;

[0089] The gear device 2 has a first rotating part P1, a second rotating part P2, a third rotating part P3 and a fourth rotating part P4 arranged in sequence on the speed line diagram ( Figure 3 ).

[0090] The input element IN can be connected to the first rotating part P1 and can be connected to the second rotating part P2.

[0091] The output element OUT is connected to the third rotating part P3,

[0092] The fourth rotating portion P4 can switch a rotating state and a non-rotating state.

[0093] The gear device 2 has:

[0094] The first planetary gear mechanism PG1 includes a first sun gear S1, a first ring gear R1, and a first planetary gear carrier C1. On the velocity diagram, the first ring gear R1 is disposed as a double pinion gear ( Figure 3 );

[0095] The second planetary gear mechanism PG2 includes a second sun gear S2, a second planetary gear carrier C2, and a second ring gear R2. On the speed line diagram, the second planetary gear carrier C2 is disposed as a single pinion ( Figure 3 ).

[0096] The first rotating part P1 is formed by the second sun gear S2,

[0097] The second rotating part P2 is composed of the first sun gear S1 and the second planetary gear carrier C2.

[0098] The third rotating part P3 is composed of the first ring gear R1 and the second ring gear R2.

[0099] The fourth rotating portion P4 is constituted by the first planetary carrier C1.

[0100] exist Figure 1In the example shown, three speed stages can be realized by switching the connection destination of the input element IN (either one or both of the first rotating part P1 and the second rotating part P2) and the rotation state of the fourth rotating part P4. Since the inter-stage ratio becomes smaller, an appropriate speed ratio can be set according to the speed range. In addition, the speed ratio is 1 in the third gear, so the power transmission loss caused by the rotation speed difference between the rotating parts can be reduced.

[0101] (2) The connection destination of the input element IN and the switching of the rotation state of the fourth rotating portion P4 can be realized by the first to third engaging elements CL1 , CL2 , and B1 .

[0102] exist Figure 1 In the example shown,

[0103] The assembly 100 comprises:

[0104] A first engaging element CL1;

[0105] A second engaging element CL2;

[0106] The third engaging element B1,

[0107] One side of the first engagement element CL1 is connected to the input element IN.

[0108] The other side of the first engaging element CL1 is connected to the second rotating part P2.

[0109] One side of the second engagement element CL2 is connected to the input element IN.

[0110] The other side of the second engaging element CL2 is connected to the first rotating part P1.

[0111] One side of the third engaging element B1 is connected to the fourth rotating part P4.

[0112] The other side of the third engaging element B1 is fixed.

[0113] According to this structure, when viewed in the axial direction, the first to third engagement elements CL1, CL2, and B1 can be overlapped with the gear device 2. When these are overlapped, the radial dimension of the assembly 100 can be reduced.

[0114] (3) Figure 1 In the example shown, the first to third engagement elements CL1, CL2, B1 are respectively arranged axially outside the gear device 2. This increases the degree of freedom in layout of the first to third engagement elements CL1, CL2, B1 and reduces the axial dimension of the assembly 100.

[0115] (4) Figure 1In the example shown, three speed stages are realized by changing two elements engaged among the first to third engagement elements CL1, CL2, and B1 ( Figure 2 Since only one engagement element is released in any speed stage, even when the first to third engagement elements CL1, CL2, and B1 are engagement elements that generate drag torque, mechanical loss can be suppressed and the power consumption rate of the vehicle equipped with the assembly 100 can be improved.

[0116] (5) Figure 1 In the example shown, one side of the first engagement element CL1 and one side of the second engagement element CL2 may be formed of an integral member. This can reduce the number of components of the assembly 100 .

[0117] As mentioned above, although the embodiment of the present invention has been described, the above embodiment is only an application example of the present invention, and the technical scope of the present invention is not limited to the specific structure of the above embodiment.

[0118] Figure 1 The schematic diagram shown is a part of the application example of the present invention, and the schematic diagram of the components to which the present invention is applied is not limited thereto.

[0119] In addition, as the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2, any of a single pinion planetary gear mechanism and a double pinion planetary gear mechanism can be used.

[0120] Explanation of symbols

[0121] 1: Shell

[0122] 2: Gear device

[0123] 100: Components

[0124] CL1: First engagement element

[0125] CL2: Second engagement element

[0126] B1: Third engagement element

[0127] S1: First sun gear

[0128] S2: Second sun gear

[0129] C1: First planetary gear carrier

[0130] C2: Second planetary gear carrier

[0131] R1: First ring gear

[0132] R2: Second ring gear

[0133] P1: First rotating part

[0134] P2: Second rotating part

[0135] P3: The third rotating part

[0136] P4: Fourth rotating part

[0137] IN: Input element

[0138] OUT: Output element

[0139] PG1: First planetary gear mechanism

[0140] PG2: Second planetary gear mechanism

Claims

1. A component having: Input components; Output components; The gear device includes a first rotating part, a second rotating part, a third rotating part and a fourth rotating part arranged in sequence on a speed line diagram. The input element is connectable with the first rotating part and is connectable with the second rotating part, The output element is connected to the third rotating part, The fourth rotating part can switch between a rotating state and a non-rotating state, The gear device comprises: a first planetary gear mechanism including a first rotating element, a second rotating element, and a third rotating element, wherein the second rotating element is disposed between the first rotating element and the third rotating element on a velocity line diagram; The second planetary gear mechanism includes a fourth rotation element, a fifth rotation element, and a sixth rotation element, and the fifth rotation element is arranged between the fourth rotation element and the sixth rotation element on the speed line diagram, The first rotating part is constituted by the fourth rotating element, The second rotating part is composed of the first rotating element and the fifth rotating element. The third rotating part is composed of the second rotating element and the sixth rotating element. The fourth rotating portion is constituted by the third rotating element.

2. The assembly of claim 1, wherein: have: a first engaging element; a second engaging element; The third engaging element, One side of the first engaging element is connected to the input element, The other side of the first engaging element is connected to the second rotating part, One side of the second engaging element is connected to the input element, The other side of the second engaging element is connected to the first rotating part. One side of the third engaging element is connected to the fourth rotating part, The other side of the third engaging element is fixed.

3. The assembly of claim 2, wherein: The first to third engagement elements are respectively arranged on the axially outer side of the gear device.

4. The assembly of claim 2, wherein: Three speed stages are realized by changing the engaged two elements among the first to third engaging elements.

5. The assembly of claim 2, wherein: The one side of the first engaging element and the one side of the second engaging element are formed of an integral component.

Images