Assembly

Abstract

In an assembly having a power transmission mechanism therein, the inter-stage ratio at the time of shifting can be reduced. This module is provided with: an input element; an output element; and a gear device configured by coupling rotation elements of a first planetary gear mechanism and a second planetary gear mechanism together at one point, a second rotation part, which is a rotation element of the coupled rotation elements, is disposed between a first rotation part and a third rotation part, a fifth rotation part is disposed between the second rotation part and a fourth rotation part, the input element is connected to the first rotation part, and the third rotation part is connected to the fourth rotation part. The output element is connected with the fifth rotating part, the third rotating part is fixed, the fourth rotating part can be selectively connected with a fixing element or the first rotating part, and the fifth rotating part can be connected with the first rotating part.

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 design concept, the inter-stage ratio when switching between 1st gear and 2nd gear (=1st gear speed ratio / 2nd gear speed ratio) 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] A gear device is configured by coupling the rotating elements of a first planetary gear mechanism and a second planetary gear mechanism at one place, wherein on a collinear diagram, the second rotating portion as the coupled rotating elements is arranged between the first rotating portion and the third rotating portion, and the fifth rotating portion is arranged between the second rotating portion and the fourth rotating portion,

[0018] The input element is connected to the first rotating part,

[0019] The output element is connected with the fifth rotating part,

[0020] The third rotating part is fixed,

[0021] The fourth rotating part can be selectively connected to the fixed element or the first rotating part,

[0022] The fifth rotating part can be connected to the first rotating part.

[0023] Effects of the Invention

[0024] According to the above method, the rotation speed of the second rotating part is reduced at a certain ratio relative to the rotation speed of the first rotating part. In this state, two speed stages can be achieved by switching the connection target of the fourth rotating part. In addition, by connecting the fifth rotating part to the first rotating part to directly connect the input and output, a speed stage of a speed ratio of 1 can be achieved. That is, three speed stages can be achieved. Since the inter-stage ratio becomes smaller, an appropriate speed ratio can be set according to the speed range. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram showing components of an embodiment of the present invention.

[0026] Figure 2 It is an engagement table showing the engagement state of each engagement element in each speed stage.

[0027] Figure 3 is a colinear diagram of the components.

[0028] Figure 4A This is a schematic diagram of a modified example.

[0029] Figure 4B It is a collinear diagram of a modified example.

[0030] Figure 5A This is a schematic diagram of a modified example.

[0031] Figure 5B It is a collinear diagram of a modified example. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] The “step ratio” is a value obtained by dividing the larger speed ratio (for low speed) by the smaller speed ratio (for high speed) of two speed ratios achieved by the assembly.

[0036] “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.

[0037] 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".

[0038] 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.

[0039] “Element (factor) A is connected to element (factor) 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. Element A is not limited to being connected to element B directly or via other components, and may be connected via a clutch or the like.

[0040] “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.

[0041] “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.

[0042] “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.

[0043] 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.

[0044] “Element A is arranged between element B and element C when observed in a prescribed direction” means that when observed from a prescribed 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, it can be observed that element A is between element B and element C when observed 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 observed 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 observed in the prescribed direction.

[0045] “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.

[0046] “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 in radial observation, it also includes the case where element A and element B have different axial positions and element A and element B do not overlap.

[0047] "Closely arranged" refers to a state in which two elements have an overlapping portion when viewed axially or radially, 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.

[0048] "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".

[0049] Other terms are defined as appropriate in the main text of the specification.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] The gear device 2 is formed by coupling the rotating elements of the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 at one location.

[0054] The first planetary gear mechanism PG1 is a single pinion planetary gear mechanism, which includes: a first sun gear S1 as a first rotating element, a plurality of first pinions (not shown), a first planetary gear carrier C1 as a second rotating element that supports the plurality of first pinions and allows them to rotate freely, and a first ring gear R1 as a third rotating element. The first sun gear S1 meshes with the plurality of first pinions, and the plurality of first pinions mesh with the first ring gear R1.

[0055] 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.

[0056] The first planetary gear carrier C1 is combined with the second ring gear R2. In this way, by combining the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 at one place, the first rotating part P1 is composed of the first sun gear S1, the second rotating part P2 is composed of the first planetary gear carrier C1 and the second ring gear R2, the third rotating part P3 is composed of the first ring gear R1, the fourth rotating part P4 is composed of the second sun gear S2, and the fifth rotating part P5 is composed of the second planetary gear carrier C2.

[0057] The first rotating part P1 is connected to the input element IN. The fifth rotating part P5 is connected to the output element OUT. The third rotating part P3 is fixed to the housing 1 as a fixed element.

[0058] The rotation speed of the output element OUT is the output rotation speed of the assembly 100 .

[0059] 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 an engaged state are set as one side and the other side, one side is connected to the first rotating part P1 formed by the first sun gear S1, and the other side is connected to the fifth rotating part P5 formed by the second planetary gear carrier C2. Therefore, if the first engagement element CL1 is engaged, the fifth rotating part P5 formed by the second planetary gear carrier C2 can be connected to the first rotating part P1 formed by the first sun gear S1.

[0060] 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 engagement state are set as one side and the other side, one side is connected to the first rotating part P1 formed by the first sun gear S1, and the other side is connected to the fourth rotating part P4 formed by the second sun gear S2. Therefore, if the second engagement element CL2 is engaged, the fourth rotating part P4 formed by the second sun gear S2 can be connected to the first rotating part P1 formed by the first sun gear S1.

[0061] In this configuration, the first engaging element CL1 and the second engaging element CL2 are arranged between the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2. Therefore, as the actuator for driving the first engaging element CL1 and the actuator for driving the second engaging element CL2, it is preferred to use a hydraulic actuator with fewer layout constraints that supplies oil pressure from a control valve assembly.

[0062] In addition, one side of the first engaging element CL1 and one side of the second engaging element CL2 are connected to the first rotating part P1 and rotate integrally, so they can be shared, that is, they can be configured as an integral component. For example, if the first engaging element CL1 and the second engaging 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 second sun gear S2, 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 second sun gear S2 can be fixed to the housing 1.

[0064] As the third engagement element B1, either an actuator that is not easily restricted by layout or an actuator that is easily restricted by layout can be adopted.

[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] In this arrangement, the other side of the second engagement element CL2 and the one side of the third engagement element B1 can be made common (integrated as one component), thereby reducing the number of components of the assembly 100 .

[0067] By engaging one of the second engagement element CL2 and the third engagement element B1 and releasing the other, the fourth rotational portion P4 formed by the second sun gear S2 can be selectively connected to the housing 1 as a fixed element or the first rotational portion P1 formed by the first sun gear S1. In addition, by engaging the first engagement element CL1, the fifth rotational portion P5 formed by the second planetary gear carrier C2 can be connected to the first rotational portion P1 formed by the first sun gear S1.

[0068] 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.

[0069] As shown in the engagement table, the first gear is achieved by engaging the third engagement element B1 and releasing the first engagement element CL1 and the second engagement element CL2. The second gear is achieved by engaging the second engagement element CL2 and releasing the first engagement element CL1 and the third engagement element B1. The third gear is achieved by engaging the first engagement element CL1 and releasing the second engagement element CL2 and the third engagement element B1.

[0070] Figure 3 : is a collinear diagram of the assembly 100. In the collinear diagram, the second rotating part P2 is arranged between the first rotating part P1 and the third rotating part P3, and the fifth rotating part P5 is arranged between the second rotating part P2 and the fourth rotating part P4.

[0071] The three vertical lines l1 to l3 of the first planetary gear mechanism PG1 represent, from the left, the first sun gear S1 constituting the first rotating part P1, the first planetary gear carrier C1 constituting the second rotating part P2, and the first ring gear R1 constituting the third rotating part P3. The three vertical lines l4 to l6 of the second planetary gear mechanism PG2 represent, from the right, the second ring gear R2 constituting the second rotating part P2, the second planetary gear carrier C2 constituting the fifth rotating part P5, and the second sun gear S2 constituting the fourth rotating part P4. Figure 3 In order to facilitate understanding, the vertical line l2 corresponding to the first planetary gear carrier C1 and the vertical line l4 corresponding to the second ring gear R2 are described. However, since the first planetary gear carrier C1 and the second ring gear R2 are coupled to each other, the vertical line l2 and the vertical line l4 are actually the same vertical line.

[0072] The first planetary gear mechanism PG1 is a single pinion planetary gear mechanism, and therefore a first carrier C1 is disposed between the first sun gear S1 and the first ring gear R1. The second planetary gear mechanism PG2 is also a single pinion planetary gear mechanism, and therefore a second carrier C2 is disposed between the second sun gear S2 and the second ring gear R2.

[0073] The input element IN is connected to the first rotating part P1 , and thus the vertical line l1 corresponds to the input element IN.

[0074] The output element OUT is connected to the fifth rotating portion P5, and thus the vertical line l5 corresponds to the output element OUT.

[0075] The straight line L0 represents the rotation speed of each rotating part P1 to P3 in the first planetary gear mechanism PG1. The input element IN is connected to the first rotating part P1, and the third rotating part P3 is fixed. Therefore, when the rotation speed of the input element IN is set to rin, the rotation speed of the second rotating part P2 becomes the ordinate of the intersection of the straight line L0 and the vertical line l2, i.e., r1. In this way, in the first planetary gear mechanism PG1, the rotation speed of the second rotating part P2 is reduced at a certain ratio relative to the rotation speed of the first rotating part P1. The intervals between the vertical lines of the first planetary gear mechanism PG1 are determined according to the gear ratio of the first planetary gear mechanism PG1 (the number of teeth of the first sun gear S1 / the number of teeth of the first ring gear R1).

[0076] like Figure 3 As shown by the middle dotted line, the rotation speed of the first planetary gear carrier C1 is equal to the rotation speed of the second ring gear R2. Therefore, when the rotation speed of the input element IN is set to rin, the rotation speed of the first planetary gear carrier C1 and the rotation speed of the second ring gear R2 are both r1.

[0077] Straight lines L1 to L3 represent the rotation speeds of the rotating parts P2, P4, and P5 in the second planetary gear mechanism PG2, corresponding to the gear stages. The rotation speeds of the rotating parts P2, P4, and P5 in each gear stage are represented by the ordinates of the intersections of the straight lines L1 to L3 corresponding to the gear stages and the vertical lines l4 to l6. The intervals between the vertical lines of the second planetary gear mechanism PG2 are determined according to the gear ratio of the second planetary gear mechanism PG2 (the number of teeth of the second sun gear S2 / the number of teeth of the second ring gear R2).

[0078] In the first gear, the third engagement element B1 is engaged, and the first engagement element CL1 and the second engagement element CL2 are released. As a result, the rotation speed of the fourth rotating part P4 becomes zero. Therefore, when the rotation speed of the input element IN is set to rin, the straight line L1 corresponding to the first gear becomes a straight line passing through the point X1 (rotation speed is zero) and the point X4 (rotation speed r1). The rotation speed of the output element OUT becomes the ordinate of the intersection of the straight line L1 and the vertical line l5, that is, r2. Therefore, the speed ratio in the first gear becomes rin / r2.

[0079] In the second gear, the second engagement element CL2 is engaged, and the first engagement element CL1 and the third engagement element B1 are released. Figure 3 As shown by the dotted line, the speeds of the fourth rotating part P4 and the first rotating part P1 are equal. Therefore, when the speed of the input element IN is set to rin, the straight line L2 corresponding to the second gear becomes a straight line passing through the point X2 (speed rin) and the point X4 (speed r1). The speed of the output element OUT becomes the ordinate of the intersection of the straight line L2 and the vertical line l5, i.e., r3. Therefore, the speed ratio in the second gear becomes rin / r3. Since r3 is larger than r2, the speed ratio of the second gear is smaller than the speed ratio of the first gear.

[0080] In the third gear, the first engagement element CL1 is engaged, and the second engagement element CL2 and the third engagement element B1 are released. Figure 3 As shown by the dotted line, the rotation speed of the fifth rotating part P5 is equal to that of the first rotating part P1, so when the rotation speed of the input element IN is rin, the straight line L3 corresponding to the third gear is a straight line passing through the point X3 (rotation speed rin) and the point X4 (rotation speed r1). The rotation speeds of the input element IN and the output element OUT are equal, so the speed ratio in the third gear is 1, which is smaller than the speed ratios of the first gear and the second gear.

[0081] The assembly 100 of this embodiment reduces the speed of the second rotating part P2 relative to the speed of the first rotating part P1 at a certain ratio according to the structure of the first planetary gear mechanism PG1. In this state, two speed stages (1st gear and 2nd gear) can be realized by selectively switching the connection target of the fourth rotating part P4 to the housing 1 or the first rotating part P1. In addition, by connecting the fifth rotating part P5 to the first rotating part P1 to directly connect the input and output, a speed stage (3rd gear) of the speed ratio 1 can be realized.

[0082] Thus, in the assembly 100, three speed stages can be realized, so that the step ratio is 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] Next, modifications of the embodiment of the present invention will be described.

[0084] Figure 4A It is a schematic diagram of a component 100 according to a modified example.

[0085] exist Figure 4A In the modified example, the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 are Figure 1The assembly 100 shown is identical to the single pinion planetary gear mechanism.

[0086] exist Figure 4A In the modified example, the first rotating part P1 is composed of the first sun gear S1 as the first rotating element, the second rotating part P2 is composed of the first planetary gear carrier C1 as the second rotating element and the second sun gear S2 as the sixth rotating element, the third rotating part P3 is composed of the first ring gear as the third rotating element, the fourth rotating part P4 is composed of the second ring gear R2 as the fourth rotating element, and the fifth rotating part P5 is composed of the second planetary gear carrier C2 as the fifth rotating element.

[0087] The first rotating part P1 is connected to the input element IN. The fifth rotating part P5 is connected to the output element OUT. The third rotating part P3 is fixed to the housing 1 as a fixed element.

[0088] Then, one side of the first engaging element CL1 is connected to the first sun gear S1 as the first rotating part P1, the other side of the first engaging element CL1 is connected to the second planetary gear carrier C2 as the fifth rotating part P5, one side of the second engaging element CL2 is connected to the first sun gear S1 as the first rotating part P1, the other side of the second engaging element CL2 is connected to the second ring gear R2 as the fourth rotating part P4, one side of the third engaging element B1 is connected to the second ring gear R2 as the fourth rotating part P4, and the other side of the third engaging element B1 is fixed to the housing 1.

[0089] exist Figure 4A In the modified example, one side of the first engagement element CL1 and one side of the second engagement element CL2 can be made common (integrated into one component), thereby reducing the number of components of the assembly 100 .

[0090] Furthermore, the other side of the second engagement element CL2 and one side of the third engagement element B1 can be made common (integrated as one component), thereby reducing the number of components of the assembly 100 .

[0091] Figure 4A The engagement table of the modified example and Figure 2 shown Figure 1 The same as the schematic diagram.

[0092] Figure 4B yes Figure 4A Collinear diagram of a modified example of .

[0093] The three vertical lines l1 to l3 of the first planetary gear mechanism PG1 represent, from the left, the first sun gear S1 constituting the first rotating portion P1, the first planetary gear carrier C1 constituting the second rotating portion P2, and the first ring gear R1 constituting the third rotating portion P3. The three vertical lines l4 to l6 of the second planetary gear mechanism PG2 represent, from the right, the second sun gear S2 constituting the second rotating portion P2, the second planetary gear carrier C2 constituting the fifth rotating portion P5, and the second ring gear R2 constituting the fourth rotating portion P4.

[0094] Figure 4B In the collinear diagram, the rotating elements constituting the first to fifth rotating parts P1 to P5 are Figure 3 The structure shown is different, but the connection relationship between the first to fifth rotating parts P1 to P5 and the first to third engaging elements CL1, CL2, B1 is the same as Figure 3 Since the connection relationship shown is the same, substantially the same collinear diagram is obtained as a collinear diagram.

[0095] Figure 5A It is a schematic diagram of a component 100 according to a modified example.

[0096] exist Figure 5A In the modified example, the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 are Figure 1 The assembly 100 shown is identical to the single pinion planetary gear mechanism.

[0097] exist Figure 5A In the modified example, the first rotating part P1 is composed of the first ring gear R1 as the first rotating element, the second rotating part P2 is composed of the first planetary gear carrier C1 as the second rotating element and the second sun gear S2 as the sixth rotating element, the third rotating part P3 is composed of the first sun gear S1 as the third rotating element, the fourth rotating part P4 is composed of the second ring gear R2 as the fourth rotating element, and the fifth rotating part P5 is composed of the second planetary gear carrier C2 as the fifth rotating element.

[0098] The first rotating part P1 is connected to the input element IN. The fifth rotating part P5 is connected to the output element OUT. The third rotating part P3 is fixed to the housing 1 as a fixed element.

[0099] Then, one side of the first engaging element CL1 is connected to the first ring gear R1 which is the first rotating part P1, the other side of the first engaging element CL1 is connected to the second planetary gear carrier C2 which is the fifth rotating part P5, one side of the second engaging element CL2 is connected to the first ring gear R1 which is the first rotating part P1, the other side of the second engaging element CL2 is connected to the second ring gear R2 which is the fourth rotating part P4, one side of the third engaging element B1 is connected to the second ring gear R2 which is the fourth rotating part P4, and the other side of the third engaging element B1 is fixed to the housing 1.

[0100] exist Figure 5A In the modified example, one side of the first engagement element CL1 and one side of the second engagement element CL2 can be made common (integrated into one component), thereby reducing the number of components of the assembly 100 .

[0101] Furthermore, the other side of the second engagement element CL2 and one side of the third engagement element B1 can be made common (integrated as one component), thereby reducing the number of components of the assembly 100 .

[0102] 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.

[0103] Figure 5A The engagement table of the modified example and Figure 2 shown Figure 1 The same as the schematic diagram.

[0104] Figure 5B yes Figure 5A Collinear diagram of a modified example of .

[0105] The three vertical lines l1 to l3 of the first planetary gear mechanism PG1 represent, from the left, the first ring gear R1 constituting the first rotating portion P1, the first planetary gear carrier C1 constituting the second rotating portion P2, and the first sun gear S1 constituting the third rotating portion P3. The three vertical lines l4 to l6 of the second planetary gear mechanism PG2 represent, from the right, the second sun gear S2 constituting the second rotating portion P2, the second planetary gear carrier C2 constituting the fifth rotating portion P5, and the second ring gear R2 constituting the fourth rotating portion P4.

[0106] Figure 5B In the collinear diagram, the rotating elements constituting the first to fifth rotating parts P1 to P5 are Figure 3 The structure shown is different, but the connection relationship between the first to fifth rotating parts P1 to P5 and the first to third engaging elements CL1, CL2, B1 is the same as Figure 3Since the connection relationship shown is the same, substantially the same collinear diagram is obtained as a collinear diagram.

[0107] Next, the effects of the embodiment of the present invention will be described.

[0108] (1) In an embodiment of the present invention, Figure 1 , Figure 4A , Figure 5A In the example shown,

[0109] The assembly 100 comprises:

[0110] Input element IN;

[0111] Output element OUT;

[0112] The gear device 2 is formed by connecting the rotating elements of the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 at one place. On the co-linear diagram, the second rotating part P2 as the rotating element connected to each other is arranged between the first rotating part P1 and the third rotating part P3, and the fifth rotating part P5 is arranged between the second rotating part P2 and the fourth rotating part P4 ( Figure 3 , Figure 4B , Figure 5B ).

[0113] The input element IN is connected to the first rotating part P1,

[0114] The output element OUT is connected to the fifth rotating part P5,

[0115] The third rotating part P3 is fixed,

[0116] The fourth rotating part P4 can be selectively connected to the housing 1 or the first rotating part P1.

[0117] The fifth rotating portion P5 can be connected to the first rotating portion P1.

[0118] According to the present embodiment, the rotation speed of the second rotating part P2 is reduced at a certain ratio relative to the rotation speed of the first rotating part P1. In this state, by switching the connection target of the fourth rotating part P4, two speed stages (1st gear, 2nd gear) can be achieved. In addition, by connecting the fifth rotating part P5 to the first rotating part P1 and directly connecting the input and output, a speed stage of a speed ratio of 1 (3rd gear) can be achieved. That is, three speed stages can be achieved. Since the inter-stage ratio becomes smaller, an appropriate speed ratio can be set according to the speed range.

[0119] (2) The gear device 2 can be as follows Figure 1 As shown in the figure. Figure 1 In the example shown,

[0120] The first planetary gear mechanism PG1 is a single pinion planetary gear mechanism including a first sun gear S1, a first planetary gear carrier C1, and a first ring gear R1, wherein the first planetary gear carrier C1 is disposed between the first sun gear S1 and the first ring gear R1 on the collinear diagram ( Figure 3 ).

[0121] The second planetary gear mechanism PG2 is a single pinion planetary gear mechanism including a second sun gear S2, a second planetary gear carrier C2, and a second ring gear R2, and the second planetary gear carrier C2 is arranged between the second sun gear S2 and the second ring gear R2 on the collinear diagram ( Figure 3 ).

[0122] The first rotating part P1 is composed of the first sun gear S1,

[0123] The second rotating part P2 is composed of the first planetary gear carrier C1 and the second ring gear R2.

[0124] The third rotating part P3 is composed of the first ring gear R1,

[0125] The fourth rotating part P4 is formed by the second sun gear S2,

[0126] The fifth rotating portion P5 is constituted by the second planetary gear carrier C2.

[0127] The gear device 2 can also be Figure 4A As shown in the figure. Figure 4A In the example shown,

[0128] The first planetary gear mechanism PG1 is a single pinion planetary gear mechanism including a first sun gear S1, a first planetary gear carrier C1, and a first ring gear R1, wherein the first planetary gear carrier C1 is disposed between the first sun gear S1 and the first ring gear R1 on the collinear diagram ( Figure 4B ).

[0129] The second planetary gear mechanism PG2 is a single pinion planetary gear mechanism including a second ring gear R2, a second planetary gear carrier C2, and a second sun gear S2, and the second planetary gear carrier C2 is arranged between the second ring gear R2 and the second sun gear S2 on the collinear diagram ( Figure 4B ).

[0130] The first rotating part P1 is composed of the first sun gear S1,

[0131] The second rotating part P2 is composed of the first planetary gear carrier C1 and the second sun gear S2.

[0132] The third rotating part P3 is composed of the first ring gear R1,

[0133] The fourth rotating part P4 is formed by the second ring gear R2,

[0134] The fifth rotating portion P5 is constituted by the second planetary gear carrier C2.

[0135] The gear device 2 can also be Figure 5A As shown in the figure. Figure 5A In the example shown,

[0136] The first planetary gear mechanism PG1 is a single pinion planetary gear mechanism including a first ring gear R1, a first planetary gear carrier C1, and a first sun gear S1, wherein the first planetary gear carrier C1 is disposed between the first ring gear R1 and the first sun gear S1 on a collinear diagram ( Figure 5B ).

[0137] The second planetary gear mechanism PG2 is a single pinion planetary gear mechanism including a second ring gear R2, a second planetary gear carrier C2, and a second sun gear S2, and the second planetary gear carrier C2 is arranged between the second ring gear R2 and the second sun gear S2 on the collinear diagram ( Figure 5B ).

[0138] The first rotating part P1 is composed of the first ring gear R1,

[0139] The second rotating part P2 is composed of the first planetary gear carrier C1 and the second sun gear S2.

[0140] The third rotating part P3 is formed by the first sun gear S1,

[0141] The fourth rotating part P4 is formed by the second ring gear R2,

[0142] The fifth rotating portion P5 is constituted by the second planetary gear carrier C2.

[0143] (3) The structure capable of selectively connecting the fourth rotating part P4 to the housing 1 or the first rotating part P1 and the structure capable of connecting the fifth rotating part P5 to the first rotating part P1 can be realized by the first to third engaging elements CL1, CL2, and B1. Figure 1 , Figure 4A , Figure 5A In the example shown,

[0144] The assembly 100 comprises:

[0145] A first engaging element CL1;

[0146] A second engaging element CL2;

[0147] The third engaging element B1.

[0148] One side of the first engaging element CL1 is connected to the first rotating part P1.

[0149] The other side of the first engaging element CL1 is connected to the fifth rotating part P5.

[0150] One side of the second engaging element CL2 is connected to the first rotating part P1.

[0151] The other side of the second engaging element CL2 is connected to the fourth rotating part P4.

[0152] One side of the third engaging element B1 is connected to the fourth rotating part P4.

[0153] The other side of the third engaging element B1 is fixed to the housing 1 .

[0154] (4) Figure 1 , Figure 4A , Figure 5A 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.

[0155] (5) Figure 1 , Figure 4A , Figure 5A In the example shown, the other side of the second engagement element CL2 and the one side of the third engagement element B1 may be formed of an integral member. This can reduce the number of components of the assembly 100.

[0156] 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.

[0157] Figure 1 , 4A 5A 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 to this.

[0158] Furthermore, although the first planetary gear mechanism PG1 and the second planetary gear mechanism PG2 are each configured as a single pinion planetary gear mechanism, they may be configured as a double pinion planetary gear mechanism.

[0159] Explanation of symbols

[0160] 1: Housing (fixed element)

[0161] 2: Gear device

[0162] 100: Components

[0163] CL1: First engagement element

[0164] CL2: Second engagement element

[0165] B1: Third engagement element

[0166] S1: First sun gear (first rotating element, third rotating element)

[0167] C1: First planetary gear carrier (second rotating element)

[0168] R1: First ring gear (first rotating element, third rotating element)

[0169] S2: Second sun gear (fourth rotating element, sixth rotating element)

[0170] C2: Second planetary gear carrier (fifth rotating element)

[0171] R2: Second ring gear (fourth rotating element, sixth rotating element)

[0172] P1: First rotating part

[0173] P2: Second rotating part

[0174] P3: The third rotating part

[0175] P4: Fourth rotating part

[0176] P5: Fifth rotating part

[0177] IN: Input element

[0178] OUT: Output element

[0179] PG1: First planetary gear mechanism

[0180] PG2: Second planetary gear mechanism

Claims

1. A component having: Input components; Output components; A gear device is configured by coupling the rotating elements of a first planetary gear mechanism and a second planetary gear mechanism at one place, wherein on a collinear diagram, the second rotating portion as the coupled rotating elements is arranged between the first rotating portion and the third rotating portion, and the fifth rotating portion is arranged between the second rotating portion and the fourth rotating portion, The input element is connected to the first rotating part, The output element is connected with the fifth rotating part, The third rotating part is fixed, The fourth rotating part can be selectively connected to the fixed element or the first rotating part, The fifth rotating part can be connected to the first rotating part.

2. The assembly of claim 1, wherein: The first planetary gear mechanism is a planetary gear mechanism including a first rotating element, a second rotating element, and a third rotating element, and the second rotating element is arranged between the first rotating element and the third rotating element on a collinear diagram. The second planetary gear mechanism is a planetary gear mechanism including 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 a collinear diagram. The first rotating part is composed of the first rotating element, The second rotating part is composed of the second rotating element and the sixth rotating element. The third rotating part is composed of the third rotating element, The fourth rotating part is composed of the fourth rotating element, The fifth rotating portion is constituted by the fifth rotating element.

3. An assembly as claimed in claim 1 or 2, 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 first rotating part, The other side of the first engaging element is connected to the fifth rotating part. One side of the second engaging element is connected to the first rotating part, The other side of the second engaging element is connected to the fourth 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 to the fixing element.

4. The assembly of claim 3, wherein: The one side of the first engaging element and the one side of the second engaging element are formed of an integral component.

5. The assembly of claim 3, wherein: The other side of the second engaging element and the one side of the third engaging element are formed of an integral component.

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