Drive transmission device for vehicles

Abstract

To provide a drive transmission device for vehicles which can appropriately detect the revolving speed of a rotating element that moves in the axial direction and easily reduce the dimension in the axial direction.SOLUTION: An engaging device comprises: a first engaged part provided at a first member; a second engaged part provided at a second member; an engaging member 33 the state of which changes between a first state in which it moves in an axial direction L and engages with both of the first and the second engaged parts and a second state in which the engagement with at least one of the first and the second engaged parts is released; a connecting member 34 which is allowed to rotate around a reference axis X1 relatively to the engaging member 33 and engaged with the engaging member 33 in the state of relative movement in the axial direction L is restricted; and a drive mechanism 35 that drives the connecting member 34 in the axial direction L and thereby moves the engaging member 33 in the axial direction L via the connecting member 34. A speed sensor 4 for detecting the revolution speed of the engaging member 33 is attached to the connecting member 34 so as to move in the axial direction L together with the connecting member 34.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle drive transmission device including an input member drivingly connected to a drive force source, an output member drivingly connected to a wheel, and a power transmission mechanism that transmits power between the input member and the output member. [Background technology]

[0002] An example of such a vehicle drive transmission device is disclosed in the following Patent Document 1. In the following description of the background art, the reference numerals in Patent Document 1 will be quoted in parentheses.

[0003] The vehicle drive transmission device of Patent Document 1 includes a speed sensor (81) that detects the rotational speed of a cylindrical clutch drum (41) that supports drive plates (45a, 55a) from the radial outside. The speed sensor (81) detects the rotational speed of the clutch drum (41) by detecting a plurality of claws (56b) that are arranged at equal intervals in the circumferential direction and protrude radially outward from the outer circumferential surface of the clutch drum (41). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-30714 Summary of the Invention [Problem to be solved by the invention]

[0005] In the vehicle drive transmission device of Patent Document 1, the speed sensor (81) is fixed to a case (2) that houses a power transmission mechanism including a multi-speed transmission (20) etc. In such a configuration, it is possible to detect the rotational speed of a rotating element whose axial movement is restricted, such as the clutch drum (41), but it is difficult to detect the rotational speed of a rotating element that moves in the axial direction.

[0006] In order to properly detect the rotational speed of a rotating element moving in the axial direction, it is necessary to ensure the axial dimension of the detection object, such as the plurality of claws (56b), according to the axial stroke range of the rotating element so that the detection object faces the speed sensor (81) regardless of the axial position of the rotating element. However, such a configuration is disadvantageous in that the axial dimension of the rotating element increases, leading to an increase in the axial size of the vehicle drive transmission device.

[0007] Therefore, it is desirable to realize a vehicle drive transmission device that can appropriately detect the rotational speed of a rotating element that moves in the axial direction and that can easily keep the axial dimension small. [Means for solving the problem]

[0008] In view of the above, the characteristic configuration of the vehicle drive transmission device is as follows: an input member drivingly connected to a drive power source; an output member drivingly connected to the wheels; a power transmission mechanism that transmits power between the input member and the output member, the power transmission mechanism includes a first member and a second member arranged coaxially with each other, and a meshing engagement device that engages and disengages the first member and the second member, The direction along the reference axis, which is the axis on which the first member and the second member are arranged, is defined as the axial direction, The engagement device is a first engaged portion provided on the first member; a second engaged portion provided on the second member; an engaging member that is rotatable about the reference axis and that changes its state between a first state in which it engages with both the first engaged portion and the second engaged portion and a second state in which it is disengaged from at least one of the first engaged portion and the second engaged portion by moving in the axial direction; a connecting member engaged with the engaging member in a state in which relative rotation about the reference axis with respect to the engaging member is permitted and relative movement in the axial direction is restricted; a drive mechanism that drives the connecting member in the axial direction to move the engaging member in the axial direction via the connecting member, A speed sensor for detecting the rotational speed of the engaging member is attached to the connecting member so as to move in the axial direction together with the connecting member.

[0009] According to this characteristic configuration, the speed sensor that detects the rotational speed of the engaging member is attached to the connecting member that moves axially together with the engaging member, thereby making it possible to appropriately detect the rotational speed of the engaging member as a rotating element that moves axially. If the axial position of the speed sensor were fixed, it would be necessary to ensure the axial dimension of the detection target according to the axial stroke range of the engagement member so that the detection target of the engagement member would face the speed sensor regardless of the axial position of the engagement member. In such a configuration, the axial dimension of the engagement member would be large, leading to an increase in the axial size of the vehicle drivetrain. However, with the present configuration, this is not necessary, making it easier to keep the axial dimension of the vehicle drivetrain small. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a skeleton diagram of a vehicle drive transmission device according to an embodiment of the present invention; [Figure 2] FIG. 1 is a partially enlarged cross-sectional view of a vehicle drive transmission device according to an embodiment, taken along an axial direction; [Figure 3] FIG. 1 is a partial perspective view of a vehicle drive transmission device according to an embodiment; [Figure 4] FIG. 1 is a partial perspective view of a vehicle drive transmission device according to an embodiment; DETAILED DESCRIPTION OF THE INVENTION

[0011] A vehicle drive transmission device 100 according to an embodiment will be described below with reference to the drawings.

[0012] As shown in FIG. 1, the vehicle drive transmission device 100 includes an input member I, an output member O, and a power transmission mechanism PT.

[0013] The input member I is a member that is drivingly connected to a driving force source D. The output member O is a member that is drivingly connected to wheels W.

[0014] Here, in this application, the term "driving connection" refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and includes a state in which the two rotating elements are connected so as to rotate integrally, or a state in which the two rotating elements are connected so as to be able to transmit a driving force via one or more transmission members. Such transmission members include various members that transmit rotation at the same speed or at a variable speed, such as shafts, gear mechanisms, belts, and chains. Note that transmission members may also include engagement devices that selectively transmit rotation and driving force, such as friction engagement devices and meshing engagement devices. However, when the term "driving connection" is used to refer to the rotating elements of a planetary gear mechanism, it refers to a state in which they are connected to each other without any other rotating elements passing through them.

[0015] In this embodiment, the driving force source D is an internal combustion engine EG. The internal combustion engine EG is a prime mover (gasoline engine, diesel engine, etc.) that is driven by the combustion of fuel to extract power.

[0016] Hereinafter, the direction along the first axis X1, which is the rotation axis of the input member I, will be referred to as the "axial direction L." One side of the axial direction L will be referred to as the "first axial side L1," and the other side of the axial direction L will be referred to as the "second axial side L2." Furthermore, the direction perpendicular to the first axis X1 will be referred to as the "radial direction R."

[0017] In this embodiment, the input member I is an input shaft 10 formed to extend along the axial direction L.

[0018] The power transmission mechanism PT is configured to transmit power between an input member I and an output member O. The power transmission mechanism PT includes a first member 1, a second member 2, and an engagement device 3.

[0019] The first member 1 and the second member 2 are arranged coaxially with each other. In this embodiment, the first member 1 and the second member 2 are arranged on a first axis X1. Therefore, in this embodiment, the first axis X1 corresponds to the "reference axis" which is the axis on which the first member 1 and the second member 2 are arranged.

[0020] The engagement device 3 is a meshing type engagement device that engages and disengages the first member 1 and the second member 2. Therefore, when the first member 1 and the second member 2 are engaged, the first member 1 and the second member 2 are connected to each other so that they rotate integrally. On the other hand, when the engagement between the first member 1 and the second member 2 is released, the first member 1 and the second member 2 are allowed to rotate freely relative to each other.

[0021] The engaging device 3 includes a first engaged portion 31 , a second engaged portion 32 , and an engaging member 33 .

[0022] The first engaged portion 31 is provided on the first member 1. In this embodiment, the first engaged portion 31 is a plurality of splines that extend along the axial direction L and are distributed in the circumferential direction around the first axis X1.

[0023] The second engaged portion 32 is provided on the second member 2. In this embodiment, the second engaged portion 32 is a plurality of splines that extend along the axial direction L and are distributed in the circumferential direction around the first axis X1.

[0024] The engaging member 33 is rotatable about the first axis X1. The engaging member 33 is movable in the axial direction L relative to the first engaged portion 31 and the second engaged portion 32. The engaging member 33 changes state between a first state and a second state by moving in the axial direction L. The first state is a state in which the engaging member 33 is engaged with both the first engaged portion 31 and the second engaged portion 32. The second state is a state in which the engaging member 33 is disengaged from at least one of the first engaged portion 31 and the second engaged portion 32.

[0025] The engaging member 33 has engaging portions 331 that engage with the first engaged portion 31 and the second engaged portion 32. In this embodiment, the engaging member 33 is formed in a cylindrical shape with the first axis X1 as its axis. The engaging portions 331 are provided on the inner circumferential surface of the engaging member 33. In this embodiment, the engaging portions 331 are a plurality of splines that extend along the axial direction L and are distributed in the circumferential direction centered on the first axis X1.

[0026] In this embodiment, the engaging member 33 is configured to move in the axial direction L while maintaining a state in which the engaging portion 331 is engaged with the first engaged portion 31. That is, in this embodiment, the second state is a state in which the engaging portion 331 is engaged with the first engaged portion 31, and the engagement between the engaging portion 331 and the second engaged portion 32 is released.

[0027] As shown in FIG. 1, in this embodiment, the vehicle drive transmission device 100 further includes an output differential gear mechanism DF and a case CS.

[0028] The output differential gear mechanism DF is configured to distribute the rotation of the output member O to a pair of wheels W. The output differential gear mechanism DF is disposed on a second axis X2 that is separate from the first axis X1. In this embodiment, the output differential gear mechanism DF includes a differential input gear 20. The differential input gear 20 functions as the output member O.

[0029] The case CS houses the power transmission mechanism PT. In this embodiment, the case CS also houses an input member I, an output member O, an output differential gear mechanism DF, and the like.

[0030] In this embodiment, the power transmission mechanism PT further includes a cylindrical body C, a first gear G1, a second gear G2, a third gear G3, a fourth gear G4, and a distribution differential gear mechanism SP.

[0031] The cylindrical body C is formed in a cylindrical shape with the first axis X1 as its axis. The first gear G1 is disposed on the first axis X1.

[0032] In this embodiment, a first engaged portion 31 is formed on the outer peripheral surface of the cylindrical body C. That is, in this embodiment, the cylindrical body C corresponds to the first member 1. In this embodiment, the first gear G1 is arranged so as to be adjacent to the cylindrical body C on the first axial side L1. A second engaged portion 32 is provided on the first gear G1. Also, in this embodiment, the case CS has a side wall portion S adjacent to the cylindrical body C on the first axial side L1. And the second engaged portion 32 is provided on the side wall portion S. That is, in this embodiment, the first gear G1 and the side wall portion S each correspond to the second member 2.

[0033] Thus, in this embodiment, the second member 2, the first member 1, and the second member 2 are arranged side by side in the axial direction L in the order described above. That is, in this embodiment, the power transmission mechanism PT includes one first member 1 and two second members 2.

[0034] Furthermore, in this embodiment, the second engaged portion 32, the first engaged portion 31, and the second engaged portion 32 are arranged side by side in the axial direction L in the order described above. That is, in this embodiment, the power transmission mechanism PT has a pair of engagement devices 3 arranged side by side in the axial direction L. Note that the pair of engagement devices 3 share the first engaged portion 31 and the engagement member 33. In the following description, of the pair of engagement devices 3, the one arranged on the first axial side L1 will be referred to as the first engagement device 3A, and the one arranged on the second axial side L2 will be referred to as the second engagement device 3B.

[0035] The second gear G2 is disposed on a third axis X3 which is separate from the first axis X1 and the second axis X2. The second gear G2 meshes with the first gear G1.

[0036] The third gear G3 is disposed on the third axis X3. The third gear G3 is connected to the second gear G2 so as to rotate integrally with the second gear G2. The third gear G3 meshes with the differential input gear 20. In this embodiment, the third gear G3 has a smaller diameter than the second gear G2. The third gear G3 is disposed closer to the second axial side L2 than the second gear G2.

[0037] The fourth gear G4 is disposed on a fourth axis X4 that is separate from the first axis X1, the second axis X2, and the third axis X3. The fourth gear G4 meshes with the second gear G2. The fourth gear G4 is drivingly connected to the second rotating electric machine MG2.

[0038] The distribution differential gear mechanism SP includes a first rotating element E1, a second rotating element E2, and a third rotating element E3. The order of rotational speeds of these rotating elements is first rotating element E1, second rotating element E2, and third rotating element E3. Here, the "order of rotational speeds" refers to the order of rotational speeds in the rotational state of each rotating element. The rotational speed of each rotating element changes depending on the state of the differential gear mechanism, but the order of high and low rotational speeds of each rotating element is constant because it is determined by the structure of the differential gear mechanism.

[0039] The first rotating element E1 is drivingly connected to the first rotating electric machine MG1. The second rotating element E2 is drivingly connected to the input member I. The third rotating element E3 is drivingly connected to the output member O via the power transmission mechanism PT.

[0040] In this embodiment, the distribution differential gear mechanism SP is configured as a planetary gear mechanism. The first rotating element E1, the second rotating element E2, and the third rotating element E3 are a sun gear, a carrier, and a ring gear, respectively. In addition, in this embodiment, the second rotating element E2 as a carrier supports a pinion gear that meshes with both the first rotating element E1 as a sun gear and the third rotating element E3 as a ring gear. In other words, in this embodiment, the distribution differential gear mechanism SP is configured as a single-pinion planetary gear mechanism.

[0041] Each of the first rotating electric machine MG1 and the second rotating electric machine MG2 has a function as a motor (electric motor) that receives a supply of electric power to generate power, and a function as a generator that receives a supply of power to generate electric power. The first rotating electric machine MG1 and the second rotating electric machine MG2 are housed in a case CS.

[0042] The first rotating electrical machine MG1 includes a first stator ST1 and a first rotor RT1. The first stator ST1 is fixed to a non-rotating member (here, a case CS). The first rotor RT1 is rotatably supported relative to the first stator ST1. In this embodiment, the first rotor RT1 is coupled to a first rotating element E1 serving as a sun gear so as to rotate integrally with the first rotating element E1.

[0043] The second rotating electrical machine MG2 includes a second stator ST2 and a second rotor RT2. The second stator ST2 is fixed to a non-rotating member (here, a case CS). The second rotor RT2 is rotatably supported relative to the second stator ST2. In this embodiment, the second rotor RT2 is coupled to the fourth gear G4 so as to rotate integrally with the fourth gear G4.

[0044] In this embodiment, when the engaging member 33 of the first engagement device 3A is in the first state, the engaging member 33 of the second engagement device 3B is in the second state. In other words, when the engaging portion 331 of the engaging member 33 is engaged with both the first engaged portion 31 and the second engaged portion 32 of the first engagement device 3A, the engaging portion 331 is disengaged from the second engaged portion 32 of the second engagement device 3B. At this time, the third rotating element E3 and the first gear G1 of the distribution differential gear mechanism SP are coupled to rotate integrally. As a result, the driving force of the internal combustion engine EG is transmitted to the first rotating electric machine MG1 by the distribution differential gear mechanism SP, and is also transmitted to the output member O via the first gear G1, the second gear G2, and the third gear G3. In addition, the driving force of the second rotating electric machine MG2 is transmitted to the output member O via the fourth gear G4, the second gear G2, and the third gear G3.

[0045] On the other hand, when the engaging member 33 of the second engagement device 3B is in the first state, the engaging member 33 of the first engagement device 3A is in the second state. In other words, when the engaging portion 331 of the engaging member 33 is engaged with both the first engaged portion 31 and the second engaged portion 32 of the second engagement device 3B, the engaging portion 331 is disengaged from the second engaged portion 32 of the first engagement device 3A. At this time, power transmission between the third rotating element E3 of the distribution differential gear mechanism SP and the first gear G1 is interrupted, and the third rotating element E3 is fixed to the case CS. As a result, the driving force of the internal combustion engine EG is transmitted to the first rotating electric machine MG1 via the distribution differential gear mechanism SP without being transmitted to the output member O, and the first rotating electric machine MG1 generates electricity using this driving force. Further, the driving force of the second rotating electrical machine MG2 is transmitted to the output member O via the fourth gear G4, the second gear G2, and the third gear G3.

[0046] In this embodiment, the engaging members 33 can be changed to the second state in both the first engaging device 3A and the second engaging device 3B. In other words, the engaging members 33 are configured to be in a state in which the engaging portions 331 are disengaged from both the second engaged portions 32 constituting the first engaging device 3A and the second engaged portions 32 constituting the second engaging device 3B.

[0047] As shown in FIG. 2, the engagement device 3 includes a connection member 34 and a drive mechanism 35.

[0048] The connecting member 34 is engaged with the engaging member 33 in a state in which relative rotation with respect to the engaging member 33 about the first axis X1 is permitted, while relative movement in the axial direction L is restricted. To explain further, the connecting member 34 is configured so that it does not rotate about the first axis X1, but rather the engaging member 33 rotates about the first axis X1. The connecting member 34 is formed to extend along the radial direction R. In this embodiment, a retaining groove 33a recessed inward in the radial direction R is formed on the outer circumferential surface of the engaging member 33 continuously along the circumferential direction centered on the first axis X1. The inner end of the connecting member 34 in the radial direction R is formed in an arc shape that follows the retaining groove 33a and is disposed within the retaining groove 33a.

[0049] The drive mechanism 35 is configured to drive the connection member 34 in the axial direction L, thereby moving the engagement member 33 in the axial direction L via the connection member 34. In this embodiment, the drive mechanism 35 includes a transmission shaft 351, a rack gear 352, and a pinion gear 353.

[0050] The transmission shaft 351 is formed to extend along the axial direction L. The transmission shaft 351 is supported movably in the axial direction L relative to the case CS. The transmission shaft 351 is coupled to the connecting member 34 so as to move integrally therewith. The transmission shaft 351 is disposed on a fifth axis X5, which is separate from the first axis X1 to the fourth axis X4. In this embodiment, the first axis X1, the second axis X2, the third axis X3, the fourth axis X4, and the fifth axis X5 are disposed parallel to one another.

[0051] The rack gear 352 is formed on the transmission shaft 351 along the axial direction L. In this embodiment, the rack gear 352 is disposed on the first axial side L1 of the coupling portion of the transmission shaft 351 with the connecting member 34.

[0052] The pinion gear 353 meshes with the rack gear 352 with its rotation axis perpendicular to the fifth axis X5. The pinion gear 353 is configured to rotate by a driving force from a driving source (not shown) such as an electric motor. As the pinion gear 353 rotates, the transmission shaft 351, on which the rack gear 352 that meshes with the pinion gear 353 is formed, moves in the axial direction L. As a result, the engagement member 33 moves in the axial direction L via the connection member 34 connected to the transmission shaft 351.

[0053] In this embodiment, the engagement device 3 further includes a detent mechanism 36. The detent mechanism 36 is configured to maintain the position of the engagement member 33 in the axial direction L. The detent mechanism 36 includes a detent groove portion 361, a spherical body 362, and a biasing member 363.

[0054] The detent groove 361 is formed to be recessed from the outer circumferential surface of the transmission shaft 351 toward the fifth axis X5. The spherical body 362 is formed to fit into the detent groove 361. The biasing member 363 biases the spherical body 362 toward the fifth axis X5. In this embodiment, the biasing member 363 is a compression coil spring.

[0055] In this embodiment, the detent groove 361 is disposed adjacent to the second axial side L2 of the rack gear 352. In this embodiment, three detent grooves 361 are disposed side by side in the axial direction L so as to correspond to the states of the engagement device 3 as follows.

[0056] When the engaging member 33 in the first engaging device 3A is in the first state and the engaging member 33 in the second engaging device 3B is in the second state, that is, when the engaging portion 331 of the engaging member 33 is engaged with both the first engaged portion 31 and the second engaged portion 32 constituting the first engaging device 3A and the engagement between the engaging portion 331 and the second engaged portion 32 constituting the second engaging device 3B is released, the sphere 362 is fitted into the detent groove portion 361 on the second axial side L2.

[0057] When the engaging member 33 in the first engaging device 3A is in the second state and the engaging member 33 in the second engaging device 3B is in the first state, that is, when the engaging portion 331 of the engaging member 33 is engaged with both the first engaged portion 31 and the second engaged portion 32 that constitutes the second engaging device 3B and the engagement between the engaging portion 331 and the second engaged portion 32 that constitutes the first engaging device 3A is released, the sphere 362 is fitted into the detent groove portion 361 on the first axial side L1 (the state shown in Figure 2).

[0058] When the engaging member 33 in both the first engaging device 3A and the second engaging device 3B is in the second state, that is, when the engaging portion 331 of the engaging member 33 is disengaged from both the second engaged portion 32 constituting the first engaging device 3A and the second engaged portion 32 constituting the second engaging device 3B, the sphere 362 is fitted into the central detent groove portion 361 in the axial direction L.

[0059] The detent grooves 361 are shaped so that the spheres 362 can move relatively between the three detent grooves 361 when the state of the engaging member 33 changes. In this embodiment, the detent grooves 361 are formed in a V-shape when viewed in cross section along the fifth axis X5.

[0060] In the following description, the direction perpendicular to the axial direction L is referred to as the "axial orthogonal direction P." One side of the axial orthogonal direction P is referred to as the "axial orthogonal direction first side P1," and the other side of the axial orthogonal direction P is referred to as the "axial orthogonal direction second side P2." In this embodiment, the axial orthogonal direction P is a direction along the horizontal direction. In addition, in this embodiment, the side of the first axis X1 in the axial orthogonal direction P is the axial orthogonal direction first side P1, and the side opposite to the first axis X1 is the axial orthogonal direction second side P2.

[0061] 3 and 4, the vehicle drive transmission device 100 includes a speed sensor 4. The speed sensor 4 is a sensor that detects the rotational speed of the engaging member 33. In this embodiment, the speed sensor 4 is used to synchronize the rotation of the cylindrical body C, which rotates integrally with the engaging member 33, with the rotation of the first gear G1, and to engage the engaging portion 331, which is engaged with the first engaged portion 31 provided on the cylindrical body C, with the second engaged portion 32 provided on the first gear G1.

[0062] The speed sensor 4 is attached to the connecting member 34 so as to move in the axial direction L together with the connecting member 34. In this embodiment, the speed sensor 4 is fixed to the connecting member 34 from a second side P2 in the direction perpendicular to the axis by a first fastening member F1 such as a bolt.

[0063] In this embodiment, an uneven portion 33b having an uneven shape is formed on the outer peripheral surface of the engaging member 33 along the circumferential direction of the outer peripheral surface (see also FIG. 2). The speed sensor 4 is disposed so as to face the uneven portion 33b from the outside in the radial direction R. Thus, in this embodiment, the uneven portion 33b functions as a detection target for the speed sensor 4.

[0064] In this embodiment, the vehicle drive transmission device 100 further includes a signal line 5, a support member 6, a fixing member 7, a holding member 8, and a position sensor 9.

[0065] The signal line 5 extends from the speed sensor 4. In this embodiment, the signal line 5 extends from the speed sensor 4 to the second side P2 in the direction orthogonal to the axis. In this embodiment, the signal line 5 includes an electric wire 51 and a protective member 52.

[0066] The electric wire 51 is a wiring for connecting the speed sensor 4 and a control device (not shown). In this embodiment, the electric wire 51 includes a conductor and a coating material that covers the conductor. A connector 53 is provided at the end of the electric wire 51 opposite to the speed sensor 4.

[0067] The protective member 52 is a member for protecting the electric wire 51. The protective member 52 is preferably a flexible member. In this embodiment, the protective member 52 is a spiral tube. The protective member 52 is disposed so as to cover a portion of the electric wire 51 between the speed sensor 4 and the connector 53.

[0068] The support member 6 is a member that supports the signal line 5. In this embodiment, the support member 6 includes a gripping portion 61, an attachment portion 62, and a connecting portion 63.

[0069] The gripping portion 61 is formed to grip the signal line 5. In this embodiment, the gripping portion 61 is formed to cover the signal line 5 from the first axial side L1, the second axial side L2, and the second axially orthogonal side P2. The gripping portion 61 grips the protective member 52 so that the end of the protective member 52 on the speed sensor 4 side faces upward. In this embodiment, the gripping portion 61 is disposed on the second axially orthogonal side P2 and below the speed sensor 4.

[0070] The mounting portion 62 is attached to the connecting member 34. In this embodiment, the mounting portion 62 is disposed above the grip portion 61. The mounting portion 62 is fixed to the connecting member 34 from a second side P2 in the direction perpendicular to the axis by a second fastening member F2 such as a bolt.

[0071] The connecting portion 63 is formed to connect the grip portion 61 and the mounting portion 62. In this embodiment, the connecting portion 63 is formed to extend along the vertical direction. The connecting portion 63 is arranged to contact a portion of the electric wire 51 that extends from the protective member 52 toward the speed sensor 4. The portion of the electric wire 51 that is in contact with the connecting portion 63 is fastened to the connecting portion 63 by a first fastening member T1 such as a cable tie, with the portion extending along the vertical direction.

[0072] The fixing member 7 is a member that fixes the signal line 5 to the case CS. The fixing member 7 is disposed at a distance from the speed sensor 4. In other words, the fixing member 7 is disposed at a position closer to the connector 53 than the speed sensor 4. In this embodiment, the fixing member 7 includes a tightening portion 71, a support portion 72, and a first fixing portion 73.

[0073] The fastening portion 71 is configured so that the signal wire 5 is fastened by a second fastening member T2 such as a cable tie. In this embodiment, the fastening portion 71 is formed to extend along the vertical direction. The fastening portion 71 is arranged to contact a portion of the electric wire 51 extending from the protective member 52 toward the connector 53, from the first side P1 in the axially orthogonal direction. The portion of the electric wire 51 that is in contact with the fastening portion 71 extends along the vertical direction, and this portion is fastened to the fastening portion 71 by the second fastening member T2 such as a cable tie.

[0074] The support portion 72 is formed to support the signal line 5. In this embodiment, the support portion 72 extends from the fastening portion 71 toward the second axial side L2 and is formed to cover the signal line 5 from the first axial side P1, the second axial side P2, and the lower side. The support portion 72 supports the protective member 52 so that the end of the protective member 52 on the connector 53 side faces upward.

[0075] The first fixing portion 73 is connected to the case CS. In this embodiment, the first fixing portion 73 is formed to extend from the fastening portion 71 to the first side P1 in the direction perpendicular to the axis. The first fixing portion 73 is fixed to the case CS by a third fastening member F3 such as a bolt.

[0076] In this embodiment, the signal line 5 has a curved portion 5a. The curved portion 5a is a portion of the signal line 5 that is curved between the speed sensor 4 and the fixed member .

[0077] In this embodiment, the fixing member 7 is disposed closer to the first axial side L1 than the support member 6. Here, as described above, the gripping portion 61 of the support member 6 grips the protection member 52 so that the end of the protection member 52 facing the speed sensor 4 faces upward. The support portion 72 of the fixing member 7 supports the protection member 52 so that the end of the protection member 52 facing the connector 53 faces upward. Therefore, in this embodiment, the signal line 5 is supported by the support member 6 and the fixing member 7 so that it is U-shaped when viewed in the axially orthogonal direction P. Therefore, in this embodiment, a curved portion 5a is formed between the gripping portion 61 and the support portion 72.

[0078] The holding member 8 is a member that holds the signal line 5. In this embodiment, the holding member 8 is disposed between the fixed member 7 and the support member 6 in the axial direction L. That is, in this embodiment, the fixed member 7, the holding member 8, and the support member 6 are disposed in the order described above from the first axial side L1 toward the second axial side L2. In addition, the holding member 8 is disposed below the support member 6 and the fixed member 7.

[0079] In this embodiment, the holding member 8 includes a pair of guide walls 81, a connecting wall 82, an opening 83, and a second fixing portion 84.

[0080] The pair of guide walls 81 are arranged to sandwich the curved portion 5a from both sides in a direction perpendicular to the axial direction L. In this embodiment, the pair of guide walls 81 are arranged to sandwich the curved portion 5a from a first side P1 in the direction perpendicular to the axial direction and a second side P2 in the direction perpendicular to the axial direction. Each of the pair of guide walls 81 is formed in a plate shape extending in the axial direction L and the vertical direction.

[0081] The connecting wall 82 is formed so as to connect the pair of guide walls 81 to each other. In this embodiment, the connecting wall 82 is formed in a plate shape extending in the axially orthogonal direction P and the axial direction L. The connecting wall 82 is formed so as to connect the lower ends of the pair of guide walls 81 to each other.

[0082] The opening 83 is formed between the pair of guide walls 81 so as to open on the side opposite to the connecting wall 82. In this embodiment, the opening 83 opens upward. In this embodiment, the space between the pair of guide walls 81, which is above the connecting wall 82, corresponds to the opening 83.

[0083] In this manner, in this embodiment, the holding member 8 is formed so that the cross section perpendicular to the axial direction L is U-shaped.

[0084] The second fixed portion 84 is connected to the case CS. In this embodiment, the second fixed portion 84 is formed to extend from the guide wall 81 on the second side P2 in the direction perpendicular to the axis toward the second side P2 in the direction perpendicular to the axis. The second fixed portion 84 is fixed to the case CS by a fourth fastening member F4 such as a bolt.

[0085] In this embodiment, at least one of the pair of guide walls 81 has a deformation portion 811. In the illustrated example, the guide wall 81 on the first side P1 in the axis-orthogonal direction has the deformation portion 811.

[0086] The deformation portion 811 is configured to be elastically deformable so that the width of the opening 83 changes from a state in which it is smaller than the diameter of the signal line 5 to a state in which it is equal to or larger than the diameter of the signal line 5. Here, the "width of the opening 83" is the shortest distance between the deformation portion 811 and the guide wall 81 that faces the deformation portion 811.

[0087] In this embodiment, the deformation portion 811 is curved so as to protrude toward the second side P2 in the axis-orthogonal direction beyond a portion of the guide wall 81 on the first side P1 in the axis-orthogonal direction where the deformation portion 811 is not formed.

[0088] In this embodiment, when no external force is applied to the deformable portion 811 (in its natural state), the dimension in the axial orthogonal direction P between the end of the deformable portion 811 on the axial orthogonal second side P2 and the guide wall 81 on the axial orthogonal second side P2 is smaller than the diameter of the protection member 52 for the signal line 5. When an external force is applied toward the axial orthogonal first side P1, the deformable portion 811 can be deformed so that the dimension in the axial orthogonal direction P between the end of the deformable portion 811 on the axial orthogonal second side P2 and the guide wall 81 on the axial orthogonal second side P2 becomes equal to or larger than the diameter of the protection member 52 for the signal line 5. In this way, in this embodiment, the dimension in the axial orthogonal direction P between the end of the deformable portion 811 on the axial orthogonal second side P2 and the guide wall 81 on the axial orthogonal second side P2 corresponds to the "width of the opening 83."

[0089] In this embodiment, the holding member 8 further includes lip portions 85 formed so as to curve or bend the end portions on both sides of each of the pair of guide walls 81 in the axial direction L. The lip portion 85 disposed on one of the pair of guide walls 81 and the lip portion 85 disposed on the other of the pair of guide walls 81 are formed so as to be spaced apart from each other.

[0090] In this embodiment, the guide wall 81 on the axially orthogonal first side P1 is provided with a lip portion 85 formed so that an end portion of the guide wall 81 on the axially orthogonal first side L1 is curved or bent toward the axially orthogonal first side P1, and a lip portion 85 formed so that an end portion of the guide wall 81 on the axially orthogonal second side L2 is curved or bent toward the axially orthogonal first side P1. The guide wall 81 on the axially orthogonal second side P2 is provided with a lip portion 85 formed so that an end portion of the guide wall 81 on the axially orthogonal first side L1 is curved or bent toward the axially orthogonal second side P2, and a lip portion 85 formed so that an end portion of the guide wall 81 on the axially orthogonal second side L2 is curved or bent toward the axially orthogonal second side P2.

[0091] As shown in Fig. 3, the position sensor 9 is a sensor that detects the position of the engaging member 33 in the axial direction L. In this embodiment, the position sensor 9 includes a detected portion 91 and a detecting portion (not shown). The detected portion 91 is configured to move in the axial direction L together with the connecting member 34. The detecting portion is fixed to the case CS.

[0092] In this embodiment, the detected portion 91 is supported by a bracket 90. The bracket 90 is attached to the connecting member 34 so as to move in the axial direction L together with the connecting member 34. In this embodiment, the bracket 90 includes a first portion extending from the connecting member 34 toward the second side P2 in the axial direction orthogonal to the connecting member 34, and a second portion extending from an end of the first portion on the second side P2 in the axial direction orthogonal to the connecting member 34 toward the second side L2 in the axial direction. The detected portion 91 is fixed to a surface of the second portion of the bracket 90 facing the second side P2 in the axial direction. In addition, a detection portion of the position sensor 9 is disposed at a position facing the detected portion 91 from the second side L2 in the axial direction.

[0093] In this embodiment, the position sensor 9 is configured as a magnetic sensor that detects, by a detection portion, a change in magnetic flux density that accompanies movement of the detection target portion 91, which is a magnet, in the axial direction L.

[0094] In this embodiment, as the engaging member 33 moves in the axial direction L, the distance in the axial direction L between the portion of the signal line 5 gripped by the gripping portion 61 of the support member 6 and the portion supported by the support portion 72 of the fixed member 7 changes. As a result, the curved portion 5a moves up and down between the pair of guide walls 81 while changing its shape. At this time, the curved portion 5a is restricted in its movement in the axial-orthogonal direction P by the pair of guide walls 81, its downward movement is restricted by the connecting wall 82, and its upward movement is restricted by the deforming portion 811 and the guide wall 81 on the axial-orthogonal direction second side P2.

[0095] It is preferable that the lip portion 85 be disposed in a vertical region corresponding to the up and down movement of the curved portion 5a that accompanies movement of the engaging member 33 in the axial direction L. In this embodiment, the lip portion 85 is disposed between the deforming portion 811 and the connecting wall 82 in the vertical direction.

[0096] Other Embodiments (1) In the above embodiment, the configuration has been described as an example in which the axis-orthogonal direction P, which is orthogonal to the axial direction L, is a direction along the horizontal direction. However, the present invention is not limited to such a configuration, and the axis-orthogonal direction P may be a direction inclined with respect to the horizontal direction.

[0097] (2) In the above embodiment, the driving force source D is an internal combustion engine EG. However, the present invention is not limited to such a configuration, and the driving force source D may be a rotating electric machine.

[0098] (3) In the above embodiment, the first rotating electric machine MG1 and the second rotating electric machine MG2 are housed in the case CS, and the driving forces of the first rotating electric machine MG1 and the second rotating electric machine MG2 are utilized. However, the present invention is not limited to such a configuration, and the driving forces of one or both of the first rotating electric machine MG1 and the second rotating electric machine MG2 may not be utilized.

[0099] (4) In the above embodiment, the power transmission mechanism PT is described as including the first gear G1, the second gear G2, the third gear G3, the fourth gear G4, and the distribution differential gear mechanism SP. However, the power transmission mechanism PT is not limited to such a configuration. For example, the power transmission mechanism PT may be configured to include other gears instead of the first gear G1, the second gear G2, the third gear G3, and the fourth gear G4. Also, the power transmission mechanism PT may not include the distribution differential gear mechanism SP.

[0100] (5) In the above embodiment, the distribution differential gear mechanism SP is configured as a single-pinion planetary gear mechanism, and the first rotating element E1, the second rotating element E2, and the third rotating element E3 are a sun gear, a carrier, and a ring gear, respectively. However, the present invention is not limited to such a configuration. For example, the distribution differential gear mechanism SP may be configured as a double-pinion planetary gear mechanism. In this configuration, it is preferable that the first rotating element E1, the second rotating element E2, and the third rotating element E3 are a sun gear, a ring gear, and a carrier, respectively.

[0101] (6) The configurations disclosed in the above-described embodiments may be combined with configurations disclosed in other embodiments as long as no contradictions arise. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications may be made as appropriate within the scope of the present disclosure.

[0102] [Summary of this embodiment] The above-described vehicle drive transmission device (100) will now be outlined.

[0103] The vehicle drive transmission device (100) includes: an input member (I) drivingly connected to a driving force source (D); an output member (O) drivingly connected to a wheel (W); a power transmission mechanism (PT) for transmitting power between the input member (I) and the output member (O), The power transmission mechanism (PT) comprises a first member (1) and a second member (2) arranged coaxially with each other, and a meshing engagement device (3) that engages and disengages the first member (1) and the second member (2), The direction along the reference axis (X1), which is the axis on which the first member (1) and the second member (2) are arranged, is defined as the axial direction (L), The engagement device (3) is a first engaged portion (31) provided on the first member (1); a second engaged portion (32) provided on the second member (2); an engaging member (33) that is rotatable about the reference axis (X1) and that, by moving in the axial direction (L), changes between a first state in which it engages with both the first engaged portion (31) and the second engaged portion (32) and a second state in which it is disengaged from at least one of the first engaged portion (31) and the second engaged portion (32); a connecting member (34) engaged with the engaging member (33) in a state in which relative rotation about the reference axis (X1) with respect to the engaging member (33) is permitted and relative movement in the axial direction (L) is restricted; a drive mechanism (35) that drives the connecting member (34) in the axial direction (L) to move the engaging member (33) in the axial direction (L) via the connecting member (34), A speed sensor (4) for detecting the rotational speed of the engaging member (33) is attached to the connecting member (34) so ​​as to move together with the connecting member (34) in the axial direction (L).

[0104] According to this configuration, the speed sensor 4, which detects the rotational speed of the engaging member 33, is attached to the connecting member 34, which moves in the axial direction (L) together with the engaging member 33. This makes it possible to appropriately detect the rotational speed of the engaging member 33, which is a rotating element that moves in the axial direction (L). If the axial position (L) of the speed sensor (4) were fixed, it would be necessary to ensure a certain axial (L) dimension of the detection target in accordance with the possible axial (L) stroke range of the engaging member (33) so that the detection target of the engaging member (33) would face the speed sensor (4) regardless of the axial (L) position of the engaging member (33). In such a configuration, the axial (L) dimension of the engaging member (33) would be large, which would lead to an increase in the size of the vehicle drive transmission device (100) in the axial (L) direction. However, with the present configuration, this is not necessary, and it is therefore easy to keep the axial (L) dimension of the vehicle drive transmission device (100) small.

[0105] Here, the vehicle drive transmission device (100) includes: a case (CS) that houses the power transmission mechanism (PT); a signal line (5) extending from the speed sensor (4); a fixing member (7) disposed at a distance from the speed sensor (4) and fixing the signal line (5) to the case (CS); and a holding member (8) for holding the signal line (5), The signal line (5) has a curved portion (5a) that is curved between the speed sensor (4) and the fixed member (7), The holding member (8) preferably includes a pair of guide walls (81) arranged to sandwich the curved portion (5a) from both sides in a direction (P) perpendicular to the axial direction (L).

[0106] According to this configuration, even if the speed sensor 4 moves in the axial direction (L) as the engaging member 33 and the connecting member 34 move in the axial direction (L) due to a change in the state of the engaging device 3, the signal line 5 can be prevented from moving to an unintended location and interfering with surrounding components. Furthermore, it is possible to prevent the signal line 5 from being subjected to a load due to deformation of the signal line 5. Therefore, it is possible to reduce the likelihood of problems such as breakage of the signal line 5.

[0107] In the above configuration, The holding member (8) further includes a connecting wall (82) connecting the pair of guide walls (81) to each other, and an opening (83) formed between the pair of guide walls (81) so as to open on the opposite side to the connecting wall (82), and is formed so that a cross section perpendicular to the axial direction (L) is U-shaped, At least one of the pair of guide walls (81) preferably has a deformation portion (811) that is elastically deformable so that the width of the opening (83) changes from a state in which it is smaller than the diameter of the signal wire (5) to a state in which it is equal to or larger than the diameter of the signal wire (5).

[0108] According to this configuration, by inserting the signal wire (5) into the holding member (8) through the opening (83), the signal wire (5) can be easily held by the holding member (8), and after the signal wire (5) is held by the holding member (8), the signal wire (5) is less likely to come off the holding member (8). Therefore, it is easy to improve the ease of assembly during the manufacture of the vehicle drive transmission device (100).

[0109] The holding member (8) further includes lip portions (85) formed so as to curve or bend both end portions of each of the pair of guide walls (81) in the axial direction, It is preferable that the lip portion (85) arranged on one of the pair of guide walls (81) and the lip portion (85) arranged on the other of the pair of guide walls (81) are formed so as to be spaced apart from each other.

[0110] According to this configuration, the lip portion (85) makes it difficult for the signal line (5) to come into contact with the end of the guide wall (81), which makes it easier to avoid damage to the signal line (5). Furthermore, with this configuration, the strength of the holding member (8) can be easily increased by the lip portion (85). [Industrial Applicability]

[0111] The technology disclosed herein can be utilized in a vehicle drive transmission device that includes an input member that is drivingly connected to a drive force source, an output member that is drivingly connected to a wheel, and a power transmission mechanism that transmits power between the input member and the output member. [Explanation of symbols]

[0112] 100: Vehicle drive transmission device, 1: First member, 2: Second member, 3: Engagement device, 31: First engaged portion, 32: Second engaged portion, 33: Engagement member, 34: Connection member, 35: Drive mechanism, 4: Speed ​​sensor, 5: Signal line, 5a: Curved portion, 51: Electric wire, 52: Protective member, 7: Fixing member, 8: Holding member, 81: Guide wall, 811: Deformed portion, 82: Connecting wall, 83: Opening, 85: Lip portion, I: Input member, O: Output member, CS: Case, PT: Power transmission mechanism, D: Drive force source, W: Wheel, L: Axial direction, P: Orthogonal to axis direction

Claims

1. an input member drivingly connected to a drive power source; an output member drivingly connected to the wheels; a power transmission mechanism that transmits power between the input member and the output member, the power transmission mechanism includes a first member and a second member arranged coaxially with each other, and a meshing engagement device that engages and disengages the first member and the second member, A direction along a reference axis, which is an axis on which the first member and the second member are arranged, is defined as an axial direction, The engagement device is a first engaged portion provided on the first member; a second engaged portion provided on the second member; an engaging member that is rotatable about the reference axis and that changes its state by moving in the axial direction between a first state in which it engages with both the first engaged portion and the second engaged portion and a second state in which it is disengaged from at least one of the first engaged portion and the second engaged portion; a connecting member engaged with the engaging member in a state in which relative rotation about the reference axis with respect to the engaging member is permitted and relative movement in the axial direction is restricted; a drive mechanism that drives the connecting member in the axial direction to move the engaging member in the axial direction via the connecting member, A speed sensor for detecting a rotational speed of the engaging member is attached to the connecting member so as to move axially together with the connecting member.

2. a case that houses the power transmission mechanism; a signal line extending from the speed sensor; a fixing member disposed at a distance from the speed sensor and fixing the signal line to the case; a holding member for holding the signal line, the signal line includes a curved portion that is curved between the speed sensor and the fixed member, The vehicle drive transmission device according to claim 1 , wherein the retaining member includes a pair of guide walls arranged to sandwich the curved portion from both sides in a direction perpendicular to the axial direction.

3. the holding member further includes a connecting wall connecting the pair of guide walls to each other, and an opening formed between the pair of guide walls so as to open to a side opposite the connecting wall, and is formed so that a cross section perpendicular to the axial direction is U-shaped, 3. The vehicle drive transmission device according to claim 2, wherein at least one of the pair of guide walls includes a deformation portion that is elastically deformable so that the width of the opening changes from a state in which it is smaller than the diameter of the signal wire to a state in which it is equal to or larger than the diameter of the signal wire.

4. the holding member further includes lip portions formed by curving or bending end portions on both sides in the axial direction of each of the pair of guide walls, 4. The vehicle drive transmission device according to claim 2, wherein the lip portion disposed on one of the pair of guide walls and the lip portion disposed on the other of the pair of guide walls are formed so as to be spaced apart from each other.

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