Vehicle drive transmission device

Abstract

Provided is a drive transmission device for a vehicle, the drive transmission device being capable of appropriately detecting the rotational speed of a rotating member that moves in the axial direction, and being easy to minimize the axial dimension. The engagement device is provided with: a first engaged section provided to the first member; a second engaged portion provided on the second member; an engagement member (33) that changes between a first state in which the engagement member (33) is moved in the axial direction (L) and engaged with both the first and second engaged portions, and a second state in which the engagement member (33) is released from at least one of the first and second engaged portions; a connection member (34) that engages with the engagement member (33) while allowing relative rotation about the reference axis (X1) with respect to the engagement member (33) and restricting relative movement in the axial direction (L); and a drive mechanism (35) that drives the connection member (34) in the axial direction (L) so as to move the engagement member (33) in the axial direction (L) via the connection member (34), and a speed sensor (4) that detects the rotational speed of the engagement member (33) is attached to the connection member (34) so as to move together with the connection member (34) in the axial direction (L).

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle drive transmission device that has an input member coupled in drive with a drive power source, an output member coupled in drive with a wheel, and a power transmission mechanism that transmits power between the input member and the output member. BACKGROUND

[0002] The following Patent Document 1 discloses one example of such a vehicle drive transmission device. Hereinafter, in the description of the background art, the reference numerals in Patent Document 1 are cited in parentheses.

[0003] The vehicle drive transmission device of Patent Document 1 has a speed sensor (81) that detects the rotational speed of a clutch drum (41) of a cylindrical shape that supports a transmission plate (45a, 55a) from the radially outer side. The speed sensor (81) detects the rotational speed of the clutch drum (41) by detecting a plurality of claw portions (56b) that are arranged at equal intervals in the circumferential direction in a manner that protrudes from the outer peripheral surface of the clutch drum (41) to the radially outer side.

[0004] Patent Document 1: Japanese Patent Application Publication No. H10-30714

[0005] In the vehicle drive transmission device of Patent Document 1, the speed sensor (81) is fixed to a housing (2) that houses a power transmission mechanism composed of a multipole transmission mechanism (20) and the like. In such a structure, it is possible to detect the rotational speed of a rotating member whose axial movement is restricted like the clutch drum (41), but it is difficult to detect the rotational speed of a rotating member that moves in the axial direction.

[0006] In order to appropriately detect the rotational speed of a rotating member that moves in the axial direction, for example, it is necessary to ensure the size of the axial direction of the detection object in accordance with the axial stroke range of the rotating member so that the detection object like the plurality of claw portions (56b) becomes in a state of being opposed to the speed sensor (81) regardless of the position of the axial direction of the rotating member. However, in such a structure, it is disadvantageous in that the size of the axial direction of the rotating member becomes large, resulting in the large size of the vehicle drive transmission device in the axial direction. SUMMARY

[0007] Therefore, it is desirable to realize a vehicle drive transmission device that is capable of appropriately detecting the rotational speed of a rotating member that moves in the axial direction and is easy to suppress the size of the axial direction to be small.

[0008] In view of the above, a vehicle drive transmission device is structured as follows. A vehicle drive transmission device in which an input member is drivingly coupled to a drive power source, an output member is drivingly coupled to a wheel, and a power transmission mechanism that transmits power between the input member and the output member is provided, the power transmission mechanism including a first member and a second member that are disposed coaxially with each other, and an engagement type engagement device that engages and disengages the first member and the second member, the engagement device including a first engagement portion provided to the first member, a second engagement portion provided to the second member, an engagement member that is rotatable about a reference axis of the first member and the second member, and that changes between a first state in which the engagement member is engaged with both the first engagement portion and the second engagement portion, and a second state in which the engagement member is disengaged from at least one of the first engagement portion and the second engagement portion by moving in an axial direction, a connection member that is engaged with the engagement member in a state in which relative rotation of the connection member about the reference axis is permitted and relative movement in the axial direction is restricted, and a drive mechanism that drives the connection member in the axial direction to move the engagement member in the axial direction via the connection member, wherein a speed sensor that detects a rotational speed of the engagement member is attached to the connection member so as to move in the axial direction together with the connection member.

[0009] According to the above structure, the speed sensor that detects the rotational speed of the engagement member is attached to the connection member that moves in the axial direction together with the engagement member. Thus, the rotational speed of the engagement member that is a rotational member and moves in the axial direction can be appropriately detected.

[0010] Suppose that in a case where the position in the axial direction of the speed sensor is fixed, the dimension of the axial direction of the detection target needs to be ensured in accordance with the range of the axial direction of the engagement member so that the detection target of the engagement member becomes in a state of being opposed to the speed sensor regardless of the position of the axial direction of the engagement member. In such a structure, the dimension of the axial direction of the engagement member becomes large, which leads to a large size of the vehicle drive transmission device in the axial direction. However, according to the present structure, such a requirement does not exist, and thus the dimension of the axial direction of the vehicle drive transmission device can be easily suppressed to be small. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 FIG. 1 is a structural view of a vehicle drive transmission device according to an embodiment.

[0012] Figure 2 FIG. 2 is a partially enlarged view of a sectional view along the axial direction of the vehicle drive transmission device according to the embodiment.

[0013] Figure 3is a partial perspective view of a vehicle drive transmission device according to an embodiment.

[0014] Figure 4 is a partial perspective view of a vehicle drive transmission device according to an embodiment.

[0015] Explanation of Reference Numerals

[0016] 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... connecting member; 35... drive mechanism; 4... speed sensor; 5... signal line; 5a... bent portion; 51... electric wire; 52... protection member; 7... fixing member; 8... holding member; 81... guide wall; 811... deformed portion; 82... link wall; 83... opening portion; 85... lip portion; I... input member; O... output member; CS... case; PT... power transmission mechanism; D... drive power source; W... wheel; L... axial direction; P... axial orthogonal direction. DETAILED DESCRIPTION

[0017] Hereinafter, a vehicle drive transmission device 100 according to an embodiment will be described with reference to the drawings.

[0018] As shown in Figure 1 , the vehicle drive transmission device 100 includes an input member I, an output member O, and a power transmission mechanism PT.

[0019] The input member I is a member that is drivingly linked to a drive power source D. The output member O is a member that is drivingly linked to a wheel W.

[0020] Herein, in the present application, "drivingly linked" means a state in which two rotating members are linked in a manner capable of transmitting a driving force, including a state in which the two rotating members are linked in a manner of rotating as one, or a state in which the two rotating members are linked in a manner capable of transmitting a driving force via one or more transmission members. As such transmission members, various members that transmit rotation at the same speed or at a speed varied, such as a shaft, a gear mechanism, a belt, a chain, and the like, are included. Further, as transmission members, an engagement device that selectively transmits rotation and a driving force, such as a friction engagement device, an interlocking engagement device, and the like, can also be included. However, with respect to each rotating member of a planetary gear mechanism, when referred to as "drivingly linked", it means a state in which the rotating members are linked to each other without passing through other rotating members.

[0021] In the present embodiment, the drive power source D is an internal combustion engine EG. The internal combustion engine EG is a prime mover (gasoline engine, diesel engine, and the like) that is driven by combustion of fuel to acquire a driving force.

[0022] Hereinafter, the direction along the rotational axis of the input member I, that is, the first axis X1, is referred to as "axial direction L". Also, one side of the axial direction L is referred to as "axial direction first side LI", and the other side of the axial direction L is referred to as "axial direction second side L2". In addition, the direction orthogonal to the first axis X1 is referred to as "radial direction R".

[0023] In the present embodiment, the input member I is an input shaft 10 formed so as to extend in the axial direction L.

[0024] The power transmission mechanism PT is configured to perform power transmission between the input member I and the output member O. The power transmission mechanism PT includes the first member 1, the second member 2, and the engagement device 3.

[0025] The first member 1 and the second member 2 are disposed coaxially with each other. In the present embodiment, the first member 1 and the second member 2 are disposed on the first axis X1. Therefore, in the present embodiment, the first axis X1 corresponds to the axis on which the first member 1 and the second member 2 are disposed, that is, the "reference axis".

[0026] The engagement device 3 is an engagement-type engagement device that performs engagement and disengagement of the first member 1 and the second member 2. Therefore, in a case where the first member 1 and the second member 2 are engaged, the first member 1 and the second member 2 become in a state of being linked to each other so as to rotate integrally. On the other hand, in a case where the engagement of the first member 1 and the second member 2 is released, the first member 1 and the second member 2 become in a state of being able to rotate relative to each other.

[0027] The engagement device 3 includes a first engaged portion 31, a second engaged portion 32, and an engagement member 33.

[0028] The first engaged portion 31 is provided to the first member 1. In the present embodiment, the first engaged portion 31 is a plurality of splines that extend in the axial direction L and are disposed dispersedly in a circumferential direction centered on the first axis X1.

[0029] The second engaged portion 32 is provided to the second member 2. In the present embodiment, the second engaged portion 32 is a plurality of splines that extend in the axial direction L and are disposed dispersedly in a circumferential direction centered on the first axis X1.

[0030] The engagement member 33 is rotatable about the first axis X1. The engagement member 33 is relatively movable in the axial direction L with respect to the first engaged portion 31 and the second engaged portion 32. The engagement member 33 changes the 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 engagement 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 engagement of the engagement member 33 with at least one of the first engaged portion 31 and the second engaged portion 32 is released.

[0031] The engaging member 33 includes an engaging portion 331 that engages with the first engaged portion 31 and the second engaged portion 32. In this embodiment, the engaging member 33 is formed into a cylindrical shape centered on the first axis X1. Furthermore, the engaging portion 331 is provided on the inner circumferential surface of the engaging member 33. In this embodiment, the engaging portion 331 comprises a plurality of splines extending in the axial direction L and dispersedly arranged circumferentially around the first axis X1.

[0032] In the present embodiment, the engaging member 33 is configured to move in the axial direction L while maintaining the state in which the engaging portion 331 is engaged with the first engaged portion 31. That is, in the present 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.

[0033] like Figure 1 As shown, in this embodiment, the vehicle drive transmission device 100 further includes an output differential gear mechanism DF and a case CS.

[0034] 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, which is different 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.

[0035] The case CS houses the power transmission mechanism PT. In the present embodiment, the case CS also houses the input member I, the output member O, the output differential gear mechanism DF, and the like.

[0036] In the present 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.

[0037] The cylindrical body C is formed in a cylindrical shape with the first axis X1 as the axis. The first gear G1 is arranged on the first axis X1.

[0038] In the present embodiment, a first engaged portion 31 is formed on the outer peripheral surface of the cylindrical body C. That is, in the present embodiment, the cylindrical body C is equivalent to the first component 1. In the present embodiment, the first gear G1 is configured to be adjacent to the cylindrical body C on the first axial side L1. Furthermore, a second engaged portion 32 is provided on the first gear G1. In addition, in the present embodiment, the housing CS has a side wall portion S adjacent to the cylindrical body C on the first axial side L1. Furthermore, a second engaged portion 32 is provided on the side wall portion S. That is, in the present embodiment, each of the first gear G1 and the side wall portion S is equivalent to the second component 2.

[0039] Thus, in the present embodiment, the second member 2, the first member 1, and the second member 2 are arranged in the order described along the axial direction L. That is, in the present embodiment, the power transmission mechanism PT has one first member 1 and two second members 2.

[0040] Further, in the present embodiment, the second engagement portion 32, the first engagement portion 31, and the second engagement portion 32 are arranged in the order described along the axial direction L. That is, in the present embodiment, in the power transmission mechanism PT, the pair of engagement devices 3 are arranged along the axial direction L. Further, in the pair of engagement devices 3, the first engagement portion 31 and the engagement member 33 are shared. In the following description, the device of the pair of engagement devices 3 arranged on the first side L1 of the axial direction is referred to as the first engagement device 3A, and the device arranged on the second side L2 of the axial direction is referred to as the second engagement device 3B.

[0041] The second gear G2 is arranged on a third axis X3 that is different from the first axis X1 and the second axis X2. The second gear G2 is engaged with the first gear G1.

[0042] The third gear G3 is arranged on the third axis X3. The third gear G3 is linked so as to rotate integrally with the second gear G2. The third gear G3 is engaged with the differential input gear 20. In the present embodiment, the third gear G3 is formed to have a smaller diameter than the second gear G2. Further, the third gear G3 is arranged on the second side L2 of the axial direction than the second gear G2.

[0043] The fourth gear G4 is arranged on a fourth axis X4 that is different from the first axis X1, the second axis X2, and the third axis X3. The fourth gear G4 is engaged with the second gear G2. The fourth gear G4 is drivingly linked with the second rotary electric machine MG2.

[0044] The split differential gear mechanism SP has a first rotary member E1, a second rotary member E2, and a third rotary member E3. The order of the rotational speeds of these rotary members is the order of the first rotary member E1, the second rotary member E2, and the third rotary member E3. Here, the "order of the rotational speeds" refers to the order of the rotational speeds in the state of rotation of each rotary member. The rotational speed of each rotary member varies depending on the state of the differential gear mechanism, but the arrangement order of the high and low of the rotational speeds of each rotary member is determined depending on the configuration of the differential gear mechanism, and thus is constant.

[0045] The first rotary member E1 is drivingly linked with the first rotary electric machine MG1. The second rotary member E2 is drivingly linked with the input member I. The third rotary member E3 is drivingly linked with the output member O via the power transmission mechanism PT.

[0046] In the present embodiment, the distribution differential gear mechanism SP is configured as a planetary gear mechanism. Also, the first rotating member El, the second rotating member E2, and the third rotating member E3 are respectively a sun gear, a carrier, and a ring gear. In addition, in the present embodiment, the second rotating member E2 as the carrier supports a pinion that engages with both the first rotating member El as the sun gear and the third rotating member E3 as the ring gear. That is, in the present embodiment, the distribution differential gear mechanism SP is configured as a single-pinion type planetary gear mechanism.

[0047] Each of the first rotating electric machine MGl and the second rotating electric machine MG2 has a function as a motor (electric motor) that receives a supply of electric power and generates a driving force, and a function as a generator (electric generator) that receives a supply of a driving force and generates electric power. The first rotating electric machine MGl and the second rotating electric machine MG2 are housed in the case CS.

[0048] The first rotating electric machine MGl includes a first stator STl and a first rotor RTl. The first stator STl is fixed to a non-rotating member (here, the case CS). The first rotor RTl is rotatably supported to the first stator STl. In the present embodiment, the first rotor RTl is linked so as to rotate integrally with the first rotating member El as the sun gear.

[0049] The second rotating electric machine MG2 includes a second stator ST2 and a second rotor RT2. The second stator ST2 is fixed to a non-rotating member (here, the case CS). The second rotor RT2 is rotatably supported to the second stator ST2. In the present embodiment, the second rotor RT2 is linked so as to rotate integrally with the fourth gear G4.

[0050] In the present embodiment, when the engagement member 33 in the first engagement device 3A becomes the first state, the engagement member 33 in the second engagement device 3B becomes the second state. That is, when the engagement portion 331 of the engagement member 33 becomes a state in which the engagement portion 331 engages with both the first engaged portion 31 and the second engaged portion 32 that constitutes the first engagement device 3A, the engagement of the engagement portion 331 with the second engaged portion 32 that constitutes the second engagement device 3B is released. At this time, the third rotating member E3 of the distribution differential gear mechanism SP becomes a state in which the third rotating member E3 is rotatably linked integrally with the first gear Gl. As a result, the driving force of the internal combustion engine EG is transmitted to the first rotating electric machine MGl through the distribution differential gear mechanism SP, and is transmitted to the output member O via the first gear Gl, 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.

[0051] On the other hand, when the engaging member 33 in the second engaging device 3B is in the first state, the engaging member 33 in the first engaging device 3A is in the second state. Specifically, 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 second engaging device 3B, the engagement between the engaging portion 331 and the second engaged portion 32 constituting the first engaging device 3A is disengaged. At this point, 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 by the case CS. As a result, the driving force of the internal combustion engine EG is not transmitted to the output member O, but is instead transmitted to the first rotating electrical machine MG1 via the distribution differential gear mechanism SP. The first rotating electrical machine MG1 generates electricity using this driving force. Furthermore, 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.

[0052] Furthermore, in this embodiment, the engaging member 33 in both the first engaging device 3A and the second engaging device 3B can change its state to the second state. In other words, the engaging member 33 is configured such that the engaging portion 331 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.

[0053] like Figure 2 As shown, the engagement device 3 includes a connecting member 34 and a driving mechanism 35 .

[0054] The connecting member 34 is engaged with the engaging member 33 in a state where relative rotation around the first axis X1 is allowed relative to the engaging member 33 and relative movement in the axial direction L is restricted. To further explain, it is configured so that it is not the connecting member 34 that rotates around the first axis X1, but the engaging member 33 that rotates around the first axis X1. The connecting member 34 is formed to extend along the radial direction R. In this embodiment, a retaining groove portion 33a that is recessed toward the inner side of the radial direction R is continuously formed along the circumferential direction centered on the first axis X1 on the outer peripheral surface of the engaging member 33. Moreover, the inner end portion of the connecting member 34 in the radial direction R is formed in an arc shape along the retaining groove portion 33a and is arranged in the retaining groove portion 33a.

[0055] The drive mechanism 35 is configured to drive the connecting member 34 in the axial direction L, thereby moving the engaging member 33 in the axial direction L via the connecting member 34 . In this embodiment, the drive mechanism 35 includes a transmission shaft 351 , a rack 352 , and a pinion 353 .

[0056] The transmission shaft 351 is formed so as to extend in the axial direction L. The transmission shaft 351 is movably supported in the axial direction L by the case CS. The transmission shaft 351 is linked so as to move integrally with the connecting member 34. The transmission shaft 351 is disposed on a fifth shaft axis X5 that is different from the first shaft axis X1 to the fourth shaft axis X4. In the present embodiment, the first shaft axis X1, the second shaft axis X2, the third shaft axis X3, the fourth shaft axis X4, and the fifth shaft axis X5 are disposed so as to be parallel to one another.

[0057] The rack gear 352 is formed in the transmission shaft 351 in the axial direction L. In the present embodiment, the rack gear 352 is disposed on the first side L1 in the axial direction from the portion of the transmission shaft 351 to which the connecting member 34 is linked.

[0058] The pinion gear 353 is engaged with the rack gear 352 in a state in which the rotational axis thereof is orthogonal to the fifth shaft 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. With the rotation of the pinion gear 353, the transmission shaft 351 in which the rack gear 352 engaged with the pinion gear 353 is formed is moved in the axial direction L. As a result, the engagement member 33 is moved in the axial direction L via the connecting member 34 linked to the transmission shaft 351.

[0059] In the present embodiment, the engagement device 3 further includes a braking mechanism 36. The braking mechanism 36 is configured to hold the position of the engagement member 33 in the axial direction L. The braking mechanism 36 includes a braking groove portion 361, a ball 362, and a biasing member 363.

[0060] The braking groove portion 361 is formed so as to be recessed from the outer circumferential surface of the transmission shaft 351 toward the fifth shaft axis X5. The ball 362 is formed so as to be fitted into the braking groove portion 361. The biasing member 363 biases the ball 362 toward the fifth shaft axis X5. In the present embodiment, the biasing member 363 is a compression coil spring.

[0061] In the present embodiment, the braking groove portion 361 is disposed so as to be adjacent to the rack gear 352 on the second side L2 in the axial direction. In the present embodiment, three braking groove portions 361 are arranged in the axial direction L in a manner corresponding to the state of the engagement device 3 as follows.

[0062] When the engagement member 33 is in the first state in the first engagement device 3A and the engagement member 33 is in the second state in the second engagement device 3B, that is, when the engagement portion 331 of the engagement member 33 is in a state of being engaged with both the first engaged portion 31 and the second engaged portion 32 that constitutes the first engagement device 3A and the engagement portion 331 is in a state in which the engagement with the second engaged portion 32 that constitutes the second engagement device 3B is released, the ball 362 is in a state of being fitted into the braking groove portion 361 on the second side L2 in the axial direction.

[0063] When the engaging member 33 is in the second state in the first engaging device 3A and in the first state in the second engaging device 3B, that is, when the engaging portion 331 of the engaging member 33 is in a state of engaging with both the first engaged portion 31 and the second engaged portion 32 constituting the second engaging device 3B and in a state of disengaging the engaging portion 331 from the second engaged portion 32 constituting the first engaging device 3A, the ball 362 is in a state of being embedded in the central brake groove portion 361 in the axial direction L (the state shown in FIG. 6). Figure 2

[0064] When the engaging member 33 is in the second state in both the first engaging device 3A and the second engaging device 3B, that is, when the engaging portion 331 of the engaging member 33 is in a state of disengaging 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 ball 362 is in a state of being embedded in the central brake groove portion 361 in the axial direction L.

[0065] Further, the brake groove portion 361 has a shape in which the ball 362 is relatively movable among the three brake groove portions 361 when the engaging member 33 changes the state. In the present embodiment, the brake groove portion 361 is formed in a V-shape when viewed in a cross section along the fifth axis X5.

[0066] In the following description, a direction orthogonal to the axial direction L is referred to as an "axial orthogonal direction P". Further, one side of the axial orthogonal direction P is referred to as an "axial orthogonal direction first side P1", and the other side of the axial orthogonal direction P is referred to as an "axial orthogonal direction second side P2". In the present embodiment, the axial orthogonal direction P is a direction along the horizontal direction. Further, in the present embodiment, the side of the first axis X1 in the axial orthogonal direction P is the axial orthogonal direction first side P1, and the opposite side of the first axis X1 is the axial orthogonal direction second side P2.

[0067] As shown in FIG. 1, the vehicle drive transmission device 100 includes a first engaging device 3A and a second engaging device 3B. Figure 3 Figure 4 As shown in FIG. 1, the vehicle drive transmission device 100 includes a first engaging device 3A and a second engaging device 3B.

[0068] The speed sensor 4 is installed to the connecting member 34 in a manner of moving along the axial direction L together with the connecting member 34. In the present embodiment, the speed sensor 4 is fixed to the connecting member 34 from the axial orthogonal direction second side P2 by a first fastening member F1 such as a bolt. ​​

[0069] In the present embodiment, a concave-convex portion 33b of a concave-convex shape is formed on the outer peripheral surface of the engaging member 33 in the circumferential direction along the outer peripheral surface (see FIG. 6). Figure 2 Furthermore, the speed sensor 4 is disposed so as to oppose the concave-convex portion 33b from the outside in the radial direction R. In this way, in the present embodiment, the concave-convex portion 33b functions as a detection target of the speed sensor 4.

[0070] In the present 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.

[0071] The signal line 5 extends and protrudes from the speed sensor 4. In the present embodiment, the signal line 5 extends and protrudes from the speed sensor 4 toward the second side P2 in the axial orthogonal direction. In addition, in the present embodiment, the signal line 5 includes an electric wire 51 and a protection member 52.

[0072] The electric wire 51 is a wiring for connecting the speed sensor 4 and a control device (not shown). In the present embodiment, the electric wire 51 includes a conductor and a covering material that covers the conductor. In addition, a connector 53 is provided at the end portion of the electric wire 51 on the opposite side to the speed sensor 4.

[0073] The protection member 52 is a member for protecting the electric wire 51. The protection member 52 is preferably a member having flexibility. In the present embodiment, the protection member 52 is a spiral tube. Furthermore, the protection member 52 is disposed so as to cover a portion of the electric wire 51 between the speed sensor 4 and the connector 53.

[0074] The support member 6 is a member that supports the signal line 5. In the present embodiment, the support member 6 includes a holding portion 61, a mounting portion 62, and a connecting portion 63.

[0075] The holding portion 61 is formed so as to hold the signal line 5. In the present embodiment, the holding portion 61 is formed so as to cover the signal line 5 from the first side LI in the axial direction, the second side L2 in the axial direction, and the second side P2 in the axial orthogonal direction. Furthermore, the holding portion 61 holds the protection member 52 in such a manner that the end portion of the protection member 52 on the side of the speed sensor 4 is directed upward. In addition, in the present embodiment, the holding portion 61 is disposed on the second side P2 in the axial orthogonal direction and on the lower side with respect to the speed sensor 4.

[0076] The mounting portion 62 is mounted to the connecting member 34. In the present embodiment, the mounting portion 62 is disposed on the upper side with respect to the holding portion 61. Furthermore, the mounting portion 62 is fixed to the connecting member 34 from the second side P2 in the axial orthogonal direction by a second fastening member F2 such as a bolt.

[0077] The linking portion 63 is formed so as to link the gripping portion 61 and the mounting portion 62. In the present embodiment, the linking portion 63 is formed so as to extend in the vertical direction. In addition, the linking portion 63 is arranged so as to contact a portion of the electric wire 51 that extends and protrudes from the protective member 52 toward the speed sensor 4. Furthermore, in a state in which the portion of the electric wire 51 that contacts the linking portion 63 extends in the vertical direction, this portion is tightened to the linking portion 63 by the first tightening member T1 such as a cable tie.

[0078] The fixing member 7 is a member that fixes the signal line 5 to the case CS. The fixing member 7 is arranged separately from the speed sensor 4. In other words, the fixing member 7 is arranged at a position closer to the connector 53 than the speed sensor 4. In the present embodiment, the fixing member 7 has a tightening portion 71, a support portion 72, and a first fixing portion 73.

[0079] The tightening portion 71 is configured to tighten the signal line 5 by a second tightening member T2 such as a cable tie. In the present embodiment, the tightening portion 71 is formed so as to extend in the vertical direction. In addition, the tightening portion 71 is arranged so as to contact a portion of the electric wire 51 that extends and protrudes from the protective member 52 toward the connector 53 from the first side P1 in the axial direction. Furthermore, in a state in which the portion of the electric wire 51 that contacts the tightening portion 71 extends in the vertical direction, this portion is tightened to the tightening portion 71 by the second tightening member T2 such as a cable tie.

[0080] The support portion 72 is formed so as to support the signal line 5. In the present embodiment, the support portion 72 is formed so as to extend and protrude from the tightening portion 71 toward the second side L2 in the axial direction, and covers the signal line 5 from the first side P1 in the axial direction, the second side P2 in the axial direction, and the lower side. Furthermore, the support portion 72 supports the protective member 52 in such a manner that the end portion of the protective member 52 on the side of the connector 53 faces the upper side.

[0081] The first fixing portion 73 is linked to the case CS. In the present embodiment, the first fixing portion 73 is formed so as to extend and protrude from the tightening portion 71 toward the first side P1 in the axial direction. Furthermore, the first fixing portion 73 is fixed to the case CS by a third fastening member F3 such as a bolt.

[0082] In the present embodiment, the signal line 5 has a bent portion 5a. The bent portion 5a is a portion of the signal line 5 that is bent between the speed sensor 4 and the fixing member 7.

[0083] In this embodiment, the fixing member 7 is positioned closer to the first axial side L1 than the support member 6. As described above, the gripping portion 61 of the support member 6 grips the protective member 52 so that the end of the protective member 52 on the speed sensor 4 side faces upward. Furthermore, the supporting portion 72 of the fixing member 7 supports the protective member 52 so that the end of the protective member 52 on the connector 53 side faces upward. Therefore, in this embodiment, the signal line 5 is supported by the support member 6 and the fixing member 7 in a U-shape when viewed in the axially perpendicular direction P. Therefore, in this embodiment, a curved portion 5a is formed between the gripping portion 61 and the supporting portion 72.

[0084] The holding member 8 holds the signal line 5. In this embodiment, the holding member 8 is disposed between the fixing member 7 and the support member 6 in the axial direction L. Specifically, in this embodiment, the fixing member 7, the holding member 8, and the support member 6 are disposed in the order described, from the first axial side L1 toward the second axial side L2. Furthermore, the holding member 8 is disposed below the support member 6 and the fixing member 7.

[0085] In the present 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 .

[0086] The pair of guide walls 81 is arranged so as 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 is arranged so as to sandwich the curved portion 5a from both the first side P1 in the axially perpendicular direction and the second side P2 in the axially perpendicular direction. Furthermore, each of the pair of guide walls 81 is formed in a plate shape extending in the axial direction L and the vertical direction.

[0087] The connecting wall 82 is formed to connect the pair of guide walls 81. In this embodiment, the connecting wall 82 is formed in a plate shape extending in the axially perpendicular direction P and the axial direction L. The connecting wall 82 is formed to connect the lower ends of the pair of guide walls 81.

[0088] An opening 83 is formed between the pair of guide walls 81, opening 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, that is, the space above the connecting wall 82, corresponds to the opening 83.

[0089] As described above, in the present embodiment, the holding member 8 is formed so that the cross section perpendicular to the axial direction L is U-shaped.

[0090] The second fixing portion 84 is joined to the case CS. In the present embodiment, the second fixing portion 84 is formed so as to extend and project toward the second side P2 in the axial orthogonal direction from the guide wall 81 on the second side P2 in the axial orthogonal direction. Also, the second fixing portion 84 is fixed to the case CS by a fourth fastening member F4 such as a bolt.

[0091] In the present embodiment, at least one of the pair of guide walls 81 is provided with a deformation portion 811. In the illustrated example, the guide wall 81 on the first side PI in the axial orthogonal direction is provided with the deformation portion 811.

[0092] The deformation portion 811 is configured so as to be elastically deformable so as to change the width of the opening portion 83 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 greater than the diameter of the signal line 5. Here, the "width of the opening portion 83" is the shortest distance between the deformation portion 811 and the guide wall 81 opposite the deformation portion 811.

[0093] In the present embodiment, the deformation portion 811 is bent so as to project toward the second side P2 in the axial orthogonal direction from the portion of the guide wall 81 on the first side PI in the axial orthogonal direction in which the deformation portion 811 is not formed.

[0094] In the present embodiment, in a state in which no external force is applied to the deformation portion 811 (natural state), the dimension of the end portion of the deformation portion 811 on the second side P2 in the axial orthogonal direction from the guide wall 81 on the second side P2 in the axial orthogonal direction is smaller than the diameter of the protective member 52 of the signal line 5. Also, by applying an external force toward the first side PI in the axial orthogonal direction, the deformation portion 811 is deformable so as to change the dimension of the end portion of the deformation portion 811 on the second side P2 in the axial orthogonal direction from the guide wall 81 on the second side P2 in the axial orthogonal direction to be equal to or greater than the diameter of the protective member 52 of the signal line 5. In this way, in the present embodiment, the dimension of the end portion of the deformation portion 811 on the second side P2 in the axial orthogonal direction from the guide wall 81 on the second side P2 in the axial orthogonal direction corresponds to the "width of the opening portion 83".

[0095] In the present embodiment, the holding member 8 is further provided with a lip portion 85 formed so as to bend or flex the end portions on both sides in the axial direction L in each of the pair of guide walls 81. The lip portion 85 arranged in one of the pair of guide walls 81 and the lip portion 85 arranged in the other of the pair of guide walls 81 are formed so as to be separate from each other.

[0096] In the present embodiment, the guide wall 81 on the first shaft orthogonal direction side P1 is provided with a lip portion 85 formed so as to bend or flex the end portion of the guide wall 81 on the first shaft direction L1 toward the first shaft orthogonal direction side P1, and a lip portion 85 formed so as to bend or flex the end portion of the guide wall 81 on the second shaft direction L2 toward the first shaft orthogonal direction side P1. Also, the guide wall 81 on the second shaft orthogonal direction side P2 is provided with a lip portion 85 formed so as to bend or flex the end portion of the guide wall 81 on the first shaft direction L1 toward the second shaft orthogonal direction side P2, and a lip portion 85 formed so as to bend or flex the end portion of the guide wall 81 on the second shaft direction L2 toward the second shaft orthogonal direction side P2.

[0097] As shown in FIG. 9, the position sensor 9 is a sensor that detects the position of the shaft direction L of the engagement member 33. In the present embodiment, the position sensor 9 is provided with a detected portion 91 and a detection portion (omitted from the drawing). The detected portion 91 is configured to move along with the connection member 34 in the shaft direction L. The detection portion is fixed to the case CS. Figure 3

[0098] In the present embodiment, the detected portion 91 is supported by the bracket 90. The bracket 90 is mounted to the connection member 34 in a manner so as to move along with the connection member 34 in the shaft direction L. In the present embodiment, the bracket 90 is provided with a first portion that extends and protrudes from the connection member 34 toward the second shaft orthogonal direction side P2, and a second portion that extends and protrudes from the end portion of the first portion on the second shaft orthogonal direction side P2 toward the second shaft direction L2. Also, the detected portion 91 is fixed to the face of the second portion of the bracket 90 that faces the second shaft orthogonal direction side P2. In addition, the detection portion of the position sensor 9 is disposed at a position that opposes the detected portion 91 from the second shaft direction L2.

[0099] In the present embodiment, the position sensor 9 is configured as a magnetic sensor that detects a change in the magnetic flux density that accompanies movement of the shaft direction L of the detected portion 91 that is a magnet, by means of the detection portion.

[0100] In the present embodiment, as the engagement member 33 moves in the shaft direction L, the distance in the shaft direction L between the portion of the signal line 5 that is held by the holding portion 61 of the supported member 6 and the portion that is supported by the support portion 72 of the fixed member 7 changes. As a result of this, the bent portion 5a moves up and down between the pair of guide walls 81 while changing its shape. At this time, the bent portion 5a is restricted from moving downward by the connecting wall 82 while being restricted from moving in the shaft orthogonal direction P by the pair of guide walls 81, and is restricted from moving upward by the deformed portion 811 and the guide wall 81 on the second shaft orthogonal direction side P2.

[0101] ​Further, the lip portion 85 is preferably arranged in a region in the vertical direction corresponding to the upward and downward movement of the bent portion 5a with the movement of the engagement member 33 in the axial direction L. In the present embodiment, the lip portion 85 is arranged between the deformed portion 811 in the vertical direction and the connecting wall 82.

[0102] (Other Embodiments)

[0103] (1) In the above-described embodiments, the axis orthogonal direction P orthogonal to the axial direction L is a direction along the horizontal direction. However, the axis orthogonal direction P is not limited to this structure, and can be a direction inclined with respect to the horizontal direction.

[0104] (2) In the above-described embodiments, the drive power source D is an internal combustion engine EG. However, the drive power source D is not limited to this structure, and can be a structure in which the drive power source D is a rotary electric machine.

[0105] (3) In the above-described embodiments, the first rotary electric machine MG1 and the second rotary electric machine MG2 are housed in the case CS, and the driving force of the first rotary electric machine MG1 and the second rotary electric machine MG2 is used. However, the structure is not limited to this, and can be a structure in which the driving force of one or both of the first rotary electric machine MG1 and the second rotary electric machine MG2 is not used.

[0106] (4) In the above-described embodiments, the power transmission mechanism PT includes 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 structure is not limited to this, and for example, can be a structure in which other gears are provided instead of the first gear G1, the second gear G2, the third gear G3, and the fourth gear G4. Further, the structure can be one in which the distribution differential gear mechanism SP is not provided.

[0107] (5) In the above-described embodiments, the distribution differential gear mechanism SP is configured as a single-pinion type planetary gear mechanism, and the first rotary member E1, the second rotary member E2, and the third rotary member E3 are respectively a sun gear, a carrier, and a ring gear. However, the structure is not limited to this, and for example, the distribution differential gear mechanism SP can be configured as a double-pinion type planetary gear mechanism. In this structure, the first rotary member E1, the second rotary member E2, and the third rotary member E3 are preferably respectively a sun gear, a ring gear, and a carrier.

[0108] (6) Furthermore, the structures disclosed in the above-described embodiments can be combined with the structures disclosed in other embodiments to be applied as long as no contradiction arises. As for other structures, the embodiments disclosed in this specification are merely illustrative in all respects. Therefore, various changes can be appropriately made within the scope of the gist of the present disclosure.

[0109] [Summary of the Embodiment]

[0110] Hereinafter, a summary of the vehicle drive transmission device 100 described above will be described.

[0111] The vehicle drive transmission device 100 is a vehicle drive transmission device 100 provided with an input member I drivingly coupled to a drive power source D, an output member O drivingly coupled to a wheel W, and a power transmission mechanism PT that transmits power between the input member I and the output member O, the power transmission mechanism PT being provided with a first member 1 and a second member 2 disposed coaxially with each other, and an engagement type engagement device 3 that engages and disengages the first member 1 and the second member 2, the engagement device 3 being provided with a first engagement portion 31 provided to the first member 1, a second engagement portion 32 provided to the second member 2, an engagement member 33 rotatable about a reference axis X1, changing a state between a first state in which the engagement member 33 is engaged with both the first engagement portion 31 and the second engagement portion 32 and a second state in which the engagement with at least one of the first engagement portion 31 and the second engagement portion 32 is released, by moving in an axial direction L along the reference axis X1, a connection member 34 engaged with the engagement member 33 in a state in which relative rotation of the engagement member 33 about the reference axis X1 is allowed and relative movement in the axial direction L is restricted, and a drive mechanism 35 that drives the connection member 34 in the axial direction L, thereby moving the engagement member 33 along the axial direction L via the connection member 34, a speed sensor 4 that detects a rotational speed of the engagement member 33 being attached to the connection member 34 so as to move in the axial direction L together with the connection member 34.

[0112] According to this structure, the speed sensor 4 that detects the rotational speed of the engagement member 33 is attached to the connection member 34 that moves along the axial direction L together with the engagement member 33. Thereby, the rotational speed of the engagement member 33 that is a rotational member moving along the axial direction L can be appropriately detected.

[0113] Assuming that the position of the axial direction L of the speed sensor 4 is fixed, it is necessary to ensure the size of the axial direction L of the detection object in accordance with the range of the stroke of the axial direction L of the engagement member 33 so that the detection object of the engagement member 33 becomes a state of being opposed to the speed sensor 4 regardless of the position of the axial direction L of the engagement member 33. In such a structure, the size of the axial direction L of the engagement member 33 becomes large, resulting in the large size of the vehicle drive transmission device 100 in the axial direction L. However, according to the present structure, there is no such need, and thus it is easy to suppress the size of the axial direction L of the vehicle drive transmission device 100 to be small.

[0114] Here, the vehicle drive transmission device 100 further includes a housing CS that houses the power transmission mechanism PT, a signal line 5 that extends and protrudes from the speed sensor 4, a fixing member 7 that is disposed separately from the speed sensor 4 and fixes the signal line 5 to the housing CS, and a holding member 8 that holds the signal line 5, the signal line 5 including a bent portion 5a that is bent between the speed sensor 4 and the fixing member 7, the holding member 8 preferably including a pair of guide walls 81 that are disposed to sandwich the bent portion 5a from both sides in a direction P orthogonal to the axial direction L.

[0115] According to this structure, even in the case where the speed sensor 4 moves in the axial direction L in conjunction with the movement of the engagement member 33 and the connecting member 34 in the axial direction L to change the state of the engagement device 3, it is possible to restrict the signal line 5 from moving to an unintended position to interfere with the surrounding members. Also, it is possible to make it difficult for a load due to the deformation of the signal line 5 to act on the signal line 5. Thus, it is possible to make it difficult for a disconnection or the like of the signal line 5 to occur.

[0116] In the above-described structure, the holding member 8 further includes a link wall 82 that links the pair of guide walls 81 to each other, and an opening portion 83 that is formed between the pair of guide walls 81 in a manner of opening on the opposite side of the link wall 82, a cross section of the holding member orthogonal to the axial direction L is formed in a U shape, and at least one of the pair of guide walls 81 preferably includes a deformation portion 811 that is elastically deformable so that the width of the opening portion 83 changes from a state of being smaller than the diameter of the signal line 5 to a state of being equal to or larger than the diameter of the signal line 5.

[0117] According to this structure, the signal line 5 is inserted into the holding member 8 from the opening portion 83, so it is easy to hold the signal line 5 to the holding member 8, and it is difficult to pull out the signal line 5 from the holding member 8 after the signal line 5 is held to the holding member 8. Thus, it is easy to improve the assemblability of the vehicle drive transmission device 100 at the time of manufacturing.

[0118] Further, it is preferable that the above-mentioned holding member 8 further has a lip portion 85 formed by bending or curving end portions of the above-mentioned axial direction L of each of the above-mentioned pair of guide walls 81, and the above-mentioned lip portion 85 arranged on one of the above-mentioned pair of guide walls 81 and the above-mentioned lip portion 85 arranged on the other of the above-mentioned pair of guide walls 81 are formed to be separated from each other.

[0119] According to this structure, by the lip portion 85, the signal line 5 can be prevented from coming into contact with the end portions of the guide walls 81, and thus damage to the signal line 5 can be easily avoided. Further, according to this structure, the strength of the holding member 8 can be easily improved by the lip portion 85.

[0120] [Industrial applicability]

[0121] The technology of the present disclosure can be applied to a vehicle drive transmission device that has an input member that is drivingly coupled to a driving power source, an output member that is drivingly coupled to a wheel, and a power transmission mechanism that performs power transmission between the input member and the output member.

Claims

1. A vehicle drive transmission device that is provided with an input member that is drivingly coupled to a drive power source, an output member that is drivingly coupled to a wheel, and a power transmission mechanism that performs power transmission between the input member and the output member, the power transmission mechanism is provided with a first member and a second member that are disposed coaxially with each other, and an engagement type engagement device that performs engagement and disengagement of the first member and the second member, a direction along an axis of the first member and the second member, that is, a reference axis, is taken as an axial direction, the engagement device is provided with: a first engagement portion that is provided to the first member; a second engagement portion that is provided to the second member; an engagement member that is rotatable about the reference axis, and that changes a state between a first state in which both the first engagement portion and the second engagement portion are engaged, and a second state in which engagement with at least one of the first engagement portion and the second engagement portion is released, by moving in the axial direction; a connection member that is engaged with the engagement member in a state in which relative rotation about the reference axis with respect to the engagement member is permitted, and relative movement in the axial direction is restricted; and a drive mechanism that drives the connection member in the axial direction, thereby moving the engagement member in the axial direction via the connection member, a speed sensor that detects a rotational speed of the engagement member is attached to the connection member in a manner that moves in the axial direction together with the connection member.

2. The vehicle drive transmission device according to claim 1, wherein Further provided are: a housing that accommodates the power transmission mechanism; a signal line that extends and protrudes from the speed sensor; a fixing member that is disposed separately from the speed sensor, and that fixes the signal line to the housing.

3. The vehicle drive transmission device according to claim 2, wherein a holding member that holds the signal line is further provided, the signal line is provided with a bent portion that is bent between the speed sensor and the fixing member, the holding member is provided with a pair of guide walls that are disposed so as to sandwich the bent portion from both sides in a direction orthogonal to the axial direction.

4. The vehicle drive transmission device according to claim 3, wherein the holding member is further provided with a link wall that links the pair of guide walls to each other, and an opening portion that is formed between the pair of guide walls in a manner that opens on opposite sides of the link wall, a cross section of the holding member that is orthogonal to the axial direction is formed in a U shape, at least one of the pair of guide walls is provided with a deformation portion that is elastically deformable so that a width of the opening portion changes from a state in which the width is smaller than a diameter of the signal line to a state in which the width is equal to or greater than the diameter of the signal line.

5. The vehicle drive transmission device according to claim 3 or 4, wherein the holding member is further provided with a lip portion that is formed so as to bend or flex an end portion of each of the pair of guide walls on both sides in the axial direction, the lip portion that is disposed in one of the pair of guide walls and the lip portion that is disposed in the other of the pair of guide walls are formed so as to be separated from each other.

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