JP2023045992A - Meshing type engagement device - Google Patents

Abstract

To provide a meshing type engagement device that can be suppressed in size and cost while comprising a slide member which slides axially to move.SOLUTION: Denoting one of a first position P1 and a second position P2 corresponding to engagement states of an engagement element 1 as an object position Pa and the other as a non-object position Pb, and a driving quantity of a drive source 3 corresponding to a movement of a slide member 11 from the object position Pa to an end part on the side of an axial object side Lt within a convergence range in which converging force of a detent mechanism 5 is generated as a specific driving quantity, a control device sets, when the slide member 11 at a stop of a drive device 2 stored in a storage part is at the object position P1 in actuation of the drive device 2, driving force of the drive source 3 below the converging force of the detent mechanism 5 after driving the drive source 3 by a set driving quantity set below the specific driving quantity so that the slide member 11 moves toward the axial object side Lt from the non-object position Pb to the object position Pa in an axial direction L.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meshing engagement device that includes a meshing engagement element and a driving device that drives the engagement element.

An example of such a meshing type engagement device is disclosed in Patent Document 1 below. In the following descriptions of "Background Art" and "Problems to be Solved by the Invention," reference numerals in Patent Document 1 are quoted in parentheses.

A meshing type engagement device (1) of Patent Document 1 includes an engagement element (2) having a slide member (2a) that slides in an axial direction, and a drive device that drives the engagement element. there is The driving device includes a driving source (8), transmission mechanisms (6, 7) for transmitting the driving force of the driving source to the slide member (2a), and a mechanism for holding the axial position of the slide member (2a). and a detent mechanism (11).

JP 2013-64469 A

In the meshing type engagement device (1) of Patent Document 1, a detection device (10) is installed to detect the axial position of the slide member (2a) in order to move the slide member (2a) to a desired position. ing. However, installation of the detection device (10) has resulted in an increase in the size and cost of the interlocking engagement device (1).

Therefore, it is desired to realize a meshing type engagement device that can be reduced in size and cost in a structure including a slide member that slides in the axial direction.

In view of the above, the characteristic configuration of the meshing type engagement device is as follows:
A meshing engagement device comprising a meshing engagement element and a driving device for driving the engagement element,
The engagement element includes a slide member that slides in a prescribed axial direction, and is configured to shift between a first engagement state and a second engagement state by sliding movement of the slide member,
The driving device includes a driving source, a transmission mechanism for transmitting driving force of the driving source to the slide member, a detent mechanism for holding a slide position, which is a position of the slide member in the axial direction, and the drive. a controller for controlling the source;
The detent mechanism generates a convergence force that causes the slide position to converge to a first position corresponding to the first engagement state and a second position corresponding to the second engagement state,
One of the first position and the second position is set as a target position, and the other is set as a non-target position,
A side toward the symmetrical position from the asymmetrical position in the axial direction is defined as an axially symmetrical side,
The drive direction of the drive source for slidingly moving the slide member to the axial direction target side is defined as the target drive direction,
A convergence range is defined as a range in which the convergence force of the detent mechanism for converging the slide position to the target position is generated,
A drive amount of the drive source corresponding to moving the slide member from the target position to the end of the convergence range on the target side in the axial direction is defined as a specific drive amount,
The control device includes a storage unit that stores the slide position when the drive device is stopped, and when the slide position stored in the storage unit is the target position when the drive device is started, After the drive source is driven in the target drive direction by a set drive amount that is set to be less than the specific drive amount, first start-up control is executed to make the drive force of the drive source less than the convergence force.

According to this characteristic configuration, even if the slide position is uncertain when the driving device is started due to backlash of the transmission mechanism or the like, the slide position at the time of the previous stop is the target position. In this case, after the slide member is moved in the axial direction within the convergence range, the driving force of the drive source is reduced, whereby the slide position can be converged to the target position by the convergence force of the detent mechanism. Thereby, the gap caused by the backlash of the transmission mechanism or the like can be closed in the target driving direction, and the slide member can be accurately arranged at the target position. Therefore, it is possible to accurately control the drive of the slide member without installing a detection device for directly detecting the slide position. As a result, installation of the detection device can be avoided, so that the size and cost of the interlocking engagement device can be kept small in the structure provided with the sliding member that slides in the axial direction.
Further, according to this characteristic configuration, the drive amount of the drive source in the first start-up control is suppressed to the set drive amount that is set to be less than the specific drive amount. As a result, the drive time of the drive source for the first start-up control can be shortened. Therefore, it is possible to quickly start controlling the engagement element after starting the drive device.

1 is a skeleton diagram of a vehicle drive system provided with a meshing engagement device according to an embodiment; The figure which shows the intermeshing-type engagement apparatus which concerns on embodiment. The figure which shows the detent member of the meshing-type engagement apparatus which concerns on embodiment. 1 is a block diagram showing a driving device for a meshing engagement device according to an embodiment; FIG. FIG. 10 is a diagram showing how the restricting portion restricts the slide member from moving toward the symmetrical side in the axial direction from the restricting position; Flowchart showing an example of control processing by the control device Flowchart showing an example of first start-up control Flowchart showing an example of second start-up control Time chart showing an example of control at first start-up

Hereinafter, a meshing type engagement device 10 according to an embodiment will be described with reference to the drawings. As shown in FIG. 1 , in this embodiment, the meshing engagement device 10 is provided in a vehicle drive device 100 .

The vehicle drive device 100 includes a rotating electric machine MG having a stator ST and a rotor RT, an input member I, a transmission TM, a counter gear mechanism CG, and a differential gear mechanism DF.

The rotary electric machine MG is arranged on the first axis X1. The first axis X1 is the rotation axis of the rotor RT. In this embodiment, the meshing engagement device 10, the input member I, and the planetary gear mechanism PG are also arranged on the first axis X1. The counter gear mechanism CG is arranged on the second axis X2 different from the first axis X1. Further, the differential gear mechanism DF is arranged on a third axis X3 different from the first axis X1 and the second axis X2. In this example, the axes X1 to X3 are arranged parallel to each other.

In the following description, the direction parallel to the axes X1 to X3 is defined as the "axial direction L" of the vehicle drive device 100. As shown in FIG. One side in the axial direction L is referred to as "first axial side L1", and the other side in the axial direction L is referred to as "second axial side L2". In the present embodiment, in the axial direction L, the side on which the input member I is arranged with respect to the rotary electric machine MG is defined as the first axial side L1, and the opposite side is defined as the second axial side L2. A direction perpendicular to each of the axes X1 to X3 is defined as a "radial direction R" with respect to each axis. When there is no need to distinguish which axis should be used as a reference, or when it is clear which axis should be used as a reference, the term "radial direction R" may simply be used.

The rotary electric machine MG functions as a driving force source for the wheels W. As shown in FIG. The rotary electric machine MG has a function as a motor (electric motor) that receives power supply and generates power, and a function as a generator (generator) that receives power supply and generates power. Specifically, the rotary electric machine MG is electrically connected to a power storage device (not shown) such as a battery or a capacitor. Then, the rotating electric machine MG is powered by the electric power stored in the power storage device to generate a driving force. In addition, the rotary electric machine MG generates power by the driving force transmitted from the wheel W side, and charges the power storage device.

The stator ST of the rotating electrical machine MG is fixed to a non-rotating member (for example, a case that houses the rotating electrical machine MG and the like). A rotor RT of the rotary electric machine MG is rotatably supported with respect to the stator ST. In this embodiment, the rotor RT is arranged radially inside the stator ST.

The input member I is drivingly connected to the rotor RT. Here, in the present application, "driving connection" refers to a state in which two rotating elements are connected so as to be able to transmit a driving force, and the two rotating elements are connected so as to rotate integrally. It includes a state in which two rotating elements are connected so as to be able to transmit driving force via one or more transmission members. Such transmission members include various members that transmit rotation at the same speed or at different speeds, such as shafts, gear mechanisms, belts, and chains. The transmission member may include an engagement device for selectively transmitting rotation and driving force, such as a friction engagement device and a mesh type engagement device.

The transmission TM is configured to selectively form a plurality of gear stages. The transmission TM shifts the rotation transmitted from the input member I to the wheel W side (here, the counter gear mechanism CG) at a gear ratio corresponding to the formed gear stage among the plurality of gear stages. introduce. The transmission TM includes a planetary gear mechanism PG and the mesh engagement device 10 described above.

The planetary gear mechanism PG includes a ring gear Rg, a carrier Cr, and a sun gear Sn. The ring gear Rg is connected to the input member I so as to rotate integrally therewith. The sun gear Sn is arranged inside in the radial direction R with respect to the ring gear Rg. Carrier Cr rotatably supports a plurality of pinion gears Pn meshing with both ring gear Rg and sun gear Sn.

A mesh type engagement device 10 comprises a mesh type engagement element 1 . The engagement element 1 comprises a slide member 11 that slides in a defined axial direction. In the present embodiment, the “axial direction”, which is the sliding movement direction of the slide member 11, coincides with the axial direction L. As shown in FIG.

The engagement element 1 is configured to shift between a first engagement state and a second engagement state as the slide member 11 slides. Therefore, the slide member 11 is configured to be slidable between a first position P1 corresponding to the first engagement state and a second position P2 corresponding to the second engagement state. In this embodiment, the engagement element 1 transitions to the third engagement state in addition to the first engagement state and the second engagement state. Therefore, in this embodiment, the slide member 11 slides between the first position P1, the second position P2, and the third position P3 corresponding to the third engagement state. In this embodiment, these positions P1, P2, and P3 are arranged from the first axial side L1 toward the second axial side L2 in the order of the first position P1, the third position P3, and the second position P2. It is

In this embodiment, the engagement element 1 further comprises a support member 12 , a first engagement portion 13 and a second engagement portion 14 .

The support member 12 supports the slide member 11 so as to be slidable in the axial direction L. As shown in FIG. The support member 12 is coupled to rotate integrally with the sun gear Sn of the planetary gear mechanism PG via the first shaft member S1. The first shaft member S1 is formed to extend along the axial direction L. As shown in FIG. The first shaft member S1 is arranged on the first axis X1.

The first engaging portion 13 is arranged adjacent to the support member 12 on the axial first side L1. The first engaging portion 13 is fixed to the non-rotating member. In the present embodiment, the first engaging portion 13 is fixed to the first wall portion C1 of the case that accommodates the rotary electric machine MG and the like. The first wall portion C1 is formed to extend along the radial direction R. As shown in FIG.

The second engaging portion 14 is arranged adjacent to the support member 12 on the axial second side L2. The second engaging portion 14 is coupled to rotate integrally with the carrier Cr of the planetary gear mechanism PG via the second shaft member S2. The second shaft member S2 is formed in a tubular shape centered on the first axis X1. The second shaft member S2 is arranged outside in the radial direction R with respect to the first shaft member S1. Also, the second shaft member S2 is connected to rotate integrally with the first gear G1. The first gear G1 is arranged outside in the radial direction R with respect to the second shaft member S2. The first gear G1 is arranged on the first axis X1.

The slide member 11 is configured to selectively engage with either one of the first engaging portion 13 and the second engaging portion 14 . When the slide member 11 is positioned at the first position P<b>1 , the slide member 11 is engaged with the first engaging portion 13 . As a result, the sun gear Sn moves relative to the non-rotating member (here, the first wall portion C1) via the support member 12 that supports the slide member 11 and the first shaft member S1 connected to the support member 12. It will be in a fixed state. In this state, the rotation input from the input member I to the planetary gear mechanism PG is decelerated and transmitted to the first gear G1. In other words, in this state, the transmission TM is provided with a low-speed gear stage having a relatively large gear ratio. Thus, in the present embodiment, the first engagement state, which is the state of the engagement element 1 when the slide member 11 is positioned at the first position P1, corresponds to a state in which the transmission TM is provided with a low speed stage. do.

On the other hand, when the slide member 11 is positioned at the second position P2, the slide member 11 is engaged with the second engaging portion 14 . As a result, the support member 12 that supports the slide member 11 and the second engaging portion 14 are connected so as to rotate integrally. Therefore, the sun gear Sn connected to the support member 12 via the first shaft member S1 and the carrier Cr connected to the second engaging portion 14 via the second shaft member S2 rotate integrally. In this state, the rotation input from the input member I to the planetary gear mechanism PG is transmitted as is to the first gear G1. In other words, in this state, the transmission TM is provided with a high-speed stage, which is a gear stage with a relatively small gear ratio. As described above, in the present embodiment, the second engagement state, which is the state of the engagement element 1 when the slide member 11 is positioned at the second position P2, corresponds to a state in which the transmission TM is provided with a high speed stage. do.

Further, when the slide member 11 is positioned at the third position P3, the slide member 11 is in a state in which it is not engaged with either the first engaging portion 13 or the second engaging portion 14 . In this state, power is not transmitted between the planetary gear mechanism PG and the differential gear mechanism DF, and the driving force of the rotary electric machine MG is not transmitted to the pair of wheels W. In other words, in this state, the transmission TM is in a neutral state in which none of the gear stages are formed. As described above, in the present embodiment, the third engagement state, which is the state of the engagement element 1 when the slide member 11 is positioned at the third position P3, is when the transmission TM is not provided with any gear stage. Corresponds to the neutral state.

In this embodiment, the slide member 11 is formed in a tubular shape centered on the first axis X1. Internal teeth are formed on the inner peripheral portion of the slide member 11 , and external teeth corresponding to the internal teeth are formed on the support member 12 . These internal teeth and external teeth are engaged with each other so as to be movable relative to each other in the axial direction L and non-rotatable relative to each other in the circumferential direction. Thus, the slide member 11 is supported so as to rotate integrally with the support member 12 and slide in the axial direction L with respect to the support member 12 . That is, in this embodiment, the slide member 11 is the sleeve of the dog clutch.

Further, in the present embodiment, the first engaging portion 13 is formed in a tubular shape having the first axis X1 as its axis. The outer periphery of the first engaging portion 13 is formed with external teeth that engage with the internal teeth of the slide member 11 so as to be relatively movable in the axial direction L and not relatively rotatable in the circumferential direction. . Further, the second engaging portion 14 is formed in a tubular shape having the first axis X1 as its axis. The outer periphery of the second engaging portion 14 is formed with external teeth that engage with the internal teeth of the slide member 11 so as to be movable relative to each other in the axial direction L and not relatively rotatable in the circumferential direction. . Thus, when the slide member 11 is positioned at the first position P1, the slide member 11 is engaged with the first engaging portion 13, and when the slide member 11 is positioned at the second position P2, the slide member 11 is engaged with the first position. 2 engages with the engaging portion 14; Further, when the slide member 11 is positioned at the third position P3, the slide member 11 is not engaged with either the first engaging portion 13 or the second engaging portion 14. As shown in FIG.

The counter gear mechanism CG includes a second gear G2 that meshes with the first gear G1, and a third gear G3 that rotates integrally with the second gear G2. In this embodiment, the third gear G3 is formed with a smaller diameter than the second gear G2. The third gear G3 is arranged on the axial second side L2 relative to the second gear G2.

The differential gear mechanism DF is configured to distribute the rotation transmitted from the rotary electric machine MG to the pair of wheels W. As shown in FIG. In this embodiment, the differential gear mechanism DF has a fourth gear G4 that meshes with the third gear G3. Therefore, the differential gear mechanism DF distributes the rotation of the fourth gear G4 to the pair of wheels W in this embodiment.

As shown in FIG. 2 , the interlocking engagement device 10 comprises a drive device 2 for driving the engagement element 1 . The drive device 2 includes a drive source 3 , a transmission mechanism 4 and a detent mechanism 5 .

The drive source 3 drives the slide member 11 to slide in the axial direction L via the transmission mechanism 4 . In this embodiment, the drive source 3 includes a drive shaft 31 that rotates around an axis along the axial direction L. As shown in FIG.

The transmission mechanism 4 is a mechanism that transmits the driving force of the driving source 3 to the slide member 11 . In this embodiment, the transmission mechanism 4 includes a conversion mechanism 41 and a coupling mechanism 42 .

The conversion mechanism 41 includes a screw shaft 411 rotationally driven by the drive source 3 and a nut member 412 screwed onto the screw shaft 411 . The conversion mechanism 41 converts rotational motion of the screw shaft 411 into linear motion of the nut member 412 .

The screw shaft 411 is formed to extend along the axial direction L. As shown in FIG. A screw thread is formed on the outer peripheral portion of the screw shaft 411 . In this embodiment, the screw shaft 411 is connected to the drive shaft 31 of the drive source 3 so as to rotate integrally therewith.

As the screw shaft 411 rotates, the nut member 412 performs linear motion along the axial direction L according to the rotation direction and the direction of the thread of the screw shaft 411 .

The connecting mechanism 42 connects the nut member 412 and the slide member 11 so that the linear motion of the nut member 412 and the sliding movement of the slide member 11 are interlocked. The connecting mechanism 42 is formed to extend along a radial direction R with respect to the first axis X1 and passing through the axis of the screw shaft 411 (hereinafter referred to as "connecting direction J"). ing. In this embodiment, the connecting mechanism 42 includes a connecting member 421 and a pressing member 422 .

The connecting member 421 is formed to connect the pressing member 422 and the nut member 412 of the conversion mechanism 41 . As the nut member 412 linearly moves, the pressing member 422 moves in the axial direction L via the connecting member 421 .

The pressing member 422 presses the slide member 11 toward either the axial first side L1 or the axial second side L2. In the present embodiment, a groove portion having a first pressed surface 11a facing the second axial side L2 and a second pressed surface 11b facing the first axial side L1 is formed on the outer peripheral portion of the slide member 11 in the radial direction. It is formed so as to be recessed inside the R. Then, the pressing member 422 moves to the first side L1 in the axial direction and presses the first pressed surface 11a, whereby the sliding member 11 slides to the first side L1 in the axial direction. In addition, the pressing member 422 moves to the second side L2 in the axial direction and presses the second pressed surface 11b, so that the slide member 11 slides to the second side L2 in the axial direction. Although illustration is omitted, the pressing member 422 is formed in an arc shape along the circumferential direction around the first axis X1.

The detent mechanism 5 is a mechanism for holding the slide position, which is the position in the axial direction L of the slide member 11 . The detent mechanism 5 generates a convergence force that converges the slide position of the slide member 11 to the first position P1 and the second position P2. In this embodiment, the detent mechanism 5 also generates a convergence force that converges the slide position of the slide member 11 to the third position P3. In this embodiment, the detent mechanism 5 includes a detent member 51 and a biasing member 52 .

The detent member 51 is connected via a connecting member 421 so as to move integrally with the nut member 412 . The detent member 51 is arranged on the side opposite to the pressing member 422 side in the connection direction J with respect to the nut member 412 . The detent member 51 is formed to extend in the axial direction L. As shown in FIG.

As shown in FIG. 3 , the detent member 51 has a valley portion 6 formed so as to be depressed on one side in the connection direction J, and a peak portion 7 formed so as to protrude on the other side in the connection direction J. They are arranged alternately in the axial direction L. In this embodiment, four peak portions 7 and three valley portions 6 are alternately arranged from the peak portion 7 toward the axial direction first side L1 from the axial second side L2.

In the following description, the three valleys 6 are referred to as "first valley 6A", "second valley 6B", and "third valley 6C" in order from the second side L2 in the axial direction. The four peaks 7 are arranged in order from the axial second side L2 as "first peak 7A", "second peak 7B", "third peak 7C", and "fourth peak 7D". do. In addition, when simply describing the valley portion 6, the first valley portion 6A, the second valley portion 6B, and the third valley portion 6C are all represented without distinction. Moreover, when simply describing the peak portion 7, the first peak portion 7A, the second peak portion 7B, the third peak portion 7C, and the fourth peak portion 7D are all represented without distinction.

Further, in the following description, the side of the coupling mechanism 42 in the coupling direction J with respect to the detent member 51 is referred to as "approaching side J1", and the opposite side thereof is referred to as "separating side J2".

In this embodiment, the three troughs 6 and the four peaks 7 are formed by aligning three pairs of inclined surfaces 5a in the axial direction L. As shown in FIG. The pair of inclined surfaces 5a are inclined so as to approach each other in the axial direction L toward the approach side J1. In this example, three pairs of inclined surfaces 5a arranged in the axial direction L are formed with the same shape and size.

As shown in FIG. 2 , the biasing member 52 includes a sphere 53 and a spring 54 . The sphere 53 is formed so as to fit into the valley portion 6 . Specifically, the spherical body 53 is formed in a spherical shape having an outer diameter smaller than the distance in the axial direction L between the ends of the pair of inclined surfaces 5a on the spaced side J2. A spring 54 biases the ball 53 toward the approach side J1. The end of the spring 54 on the approach side J1 is connected to the sphere 53 . On the other hand, the end of the spring 54 on the spaced side J2 is connected to the non-rotating member. In this embodiment, the end of the spring 54 on the spaced side J2 is fixed to the second wall C2 of the case that houses the rotary electric machine MG and the like. The second wall portion C2 is formed to extend along the axial direction L. As shown in FIG.

When the spherical body 53 urged toward the approaching side J1 by the spring 54 is fitted in the valley portion 6, that is, when it is supported by both of the pair of inclined surfaces 5a, the spherical body 53 climbs the inclined surfaces 5a ( If the detent member 51 does not move in the axial direction L so as to pass over the peak portion 7 by moving to the separation side J2, the spherical body 53 does not move relative to the adjacent valley portion 6 . When the detent member 51 moves in the axial direction L to such an extent that the spherical body 53 does not go over the ridge 7 , the urging force of the spring 54 relatively moves the spherical body 53 so as to slide down the inclined surface 5 a . The position in direction L returns to its original position. Therefore, when the ball 53 is fitted in the valley 6 , it is difficult for the detent member 51 to move in the axial direction L so that the ball 53 moves relative to the adjacent valley 6 .

In this embodiment, the slide member 11 is positioned at the first position P1 when the ball 53 is fitted in the first valley portion 6A. Therefore, in this state, the transmission TM is in a state where the low speed stage is formed. Moreover, in the state where the ball 53 is fitted in the second valley portion 6B, the slide member 11 is positioned at the third position P3. Therefore, in this state, the transmission TM is in a neutral state. Further, in a state where the ball 53 is fitted in the third valley portion 6C, the slide member 11 is positioned at the second position P2. Therefore, in this state, the transmission TM is in a state where the high speed stage is formed.

Thus, in this embodiment, the detent mechanism 5 generates a convergence force that converges the slide position of the slide member 11 to the first position P1, the second position P2, and the third position P3.

As shown in FIG. 4 , the drive device 2 includes a control device 9 that controls the drive source 3 . The control device 9 has a storage section 91 . The storage unit 91 is configured to store the slide position of the slide member 11 when the drive device 2 is stopped (here, when the vehicle on which the vehicle drive device 100 is mounted is stopped). In this embodiment, the first position P1 is stored in the storage unit 91 when the transmission TM is provided with the low speed stage. On the other hand, when the high-speed stage is formed in the transmission TM, the storage unit 91 stores the second position P2. Further, when the transmission TM is in a neutral state in which none of the gear stages is formed, the storage section 91 stores the third position P3.

When the drive device 2 is started (here, when the vehicle equipped with the vehicle drive device 100 is started), the control device 9 determines that the slide position of the slide member 11 stored in the storage unit 91 is the target position Pa. In this case, the first start-up control is executed. The target position Pa is either one of the first position P1 and the second position P2. In this embodiment, the target position Pa is the first position P1. A non-target position Pb, which will be described later, is the other of the first position P1 and the second position P2. In this embodiment, the non-target position Pb is the second position P2.

In the first start-up control, the control device 9 drives the driving source 3 in the target driving direction Dt by a set driving amount Qs set to be less than the specific driving amount Q. As shown in FIG. After that, the control device 9 sets the driving force of the driving source 3 to be less than (for example, zero) the convergence force of the detent mechanism 5 that converges the slide position of the slide member 11 to the target position Pa.

Here, as shown in FIG. 2, the target driving direction Dt is the side toward the target position Pa (here, the first position P1) from the non-target position Pb (here, the second position P2) in the axial direction L. It is the driving direction of the driving source 3 that slides the slide member 11 to a certain axial symmetric side Lt (here, the first axial side L1).

Further, as shown in FIG. 3, the specific drive amount Q is set so that the slide member 11 moves from the target position Pa (here, the first position P1) to the axial direction symmetric side Lt (here, the axial direction first side) in the convergence range A. L1) is the driving amount of the driving source 3 corresponding to moving to the end of L1). The convergence range A is a range in which the convergence force of the detent mechanism 5 for converging the slide position of the slide member 11 to the target position Pa (here, the first position P1) is generated. In the present embodiment, the convergence range A is the same size as the range between the end of the first peak portion 7A on the spaced side J2 and the end of the second peak portion 7B on the spaced side J2 in the axial direction L. is.

For convenience of explanation, FIG. 3 shows a convergence range A between the end of the first peak portion 7A on the spaced side J2 and the end portion of the second peak portion 7B on the spaced side J2 in the axial direction L. However, since the convergence range A is the range of the slide position of the slide member 11, the actual position is different.

Similarly, the specific drive amount Q and the set drive amount Qs also differ from those shown in FIG. In the present embodiment, the specific driving amount Q is the distance in the axial direction L from the approach side J1 end of the first valley portion 6A corresponding to the first position P1 to the separation side J2 end of the first peak portion 7A. It is the driving amount of the driving source 3 for moving the slide member 11 by the length. Therefore, in FIG. 3, the length in the axial direction L from the end of the first valley portion 6A on the approach side J1 to the end of the first peak portion 7A on the separation side J2 is indicated as the specific driving amount Q. As shown in FIG. Further, in the present embodiment, the set drive amount Qs is set from the end of the approach side J1 of the first valley portion 6A corresponding to the first position P1 to the inclined surface forming the first valley portion 6A and the first peak portion 7A. It is the driving amount of the driving source 3 for moving the slide member 11 by the length in the axial direction L up to the middle portion of the axial direction L of 5a. Therefore, in FIG. 3, the length in the axial direction L from the end portion of the approach side J1 of the first valley portion 6A to the intermediate portion in the axial direction L of the inclined surface 5a adjacent to the second side L2 in the axial direction is set and driven. It is shown as quantity Qs. In addition, the intermediate portion can be set at an arbitrary position in the axial direction L on one inclined surface 5a.

As described above, in the first startup control, after the drive source 3 is driven by the set drive amount Qs, the drive force of the drive source 3 moves the slide position of the slide member 11 to the target position Pa (here, the first position P1) is less than the convergence force of the detent mechanism 5 (for example, zero). Therefore, in the first start-up control of the present embodiment, after the detent member 51 has moved to the first side L1 in the axial direction to such an extent that the spherical body 53 does not exceed the first peak portion 7A, the biasing force of the spring 54 causes the spherical body 53 to move. slides down the inclined surface 5a, and the detent member 51 moves to the axial second side L2. As a result, the ball 53 fits into the first valley portion 6A, and the slide position of the slide member 11 converges to the first position P1. When the drive device 2 is stopped (here, the vehicle on which the vehicle drive device 100 is mounted), the current slide position of the slide member 11 is stored in the storage unit 91 .

As described above, the meshing type engagement device 10
A meshing type engagement element 1 and a driving device 2 for driving the engagement element 1,
The engagement element 1 includes a slide member 11 that slides in a prescribed axial direction L, and the sliding movement of the slide member 11 causes state transition between a first engagement state and a second engagement state. configured,
The driving device 2 includes a driving source 3, a transmission mechanism 4 for transmitting the driving force of the driving source 3 to the slide member 11, and a detent mechanism 5 for holding the slide position of the slide member 11 in the axial direction L. and a control device 9 that controls the drive source 3,
The detent mechanism 5 generates a convergence force that converges the slide position to a first position P1 corresponding to the first engagement state and a second position P2 corresponding to the second engagement state,
One of the first position P1 and the second position P2 is set as the target position Pa, and the other is set as the non-target position Pb,
The side toward the target position Pa from the non-target position Pb in the axial direction L is defined as an axial target side Lt,
The drive direction of the drive source 3 that slides the slide member 11 toward the target side Lt in the axial direction is defined as the target drive direction Dt,
A convergence range A is a range in which the convergence force of the detent mechanism 5 that converges the slide position to the target position Pa is generated,
Assuming that the drive amount of the drive source 3 corresponding to moving the slide member 11 from the target position Pa to the end of the axial direction target side Lt in the convergence range A is a specific drive amount Q,
The control device 9 includes a storage unit 91 that stores the slide position when the driving device 2 is stopped. After the drive source 3 is driven in the target drive direction Dt by a set drive amount Qs that is set to be less than the specific drive amount Q, first start-up control is performed to make the drive force of the drive source 3 less than the convergence force of the detent mechanism 5 .

According to this configuration, even if the slide position is uncertain when the driving device 2 is started due to backlash of the transmission mechanism 4 or the like, the slide position at the time of the previous stop is the target position Pa. , the slide member 11 is moved in the axial direction L within the convergence range A, and then the driving force of the drive source 3 is reduced, so that the slide position is moved to the target position Pa by the convergence force of the detent mechanism 5. can be converged to Accordingly, the gap caused by the backlash of the transmission mechanism 4 or the like can be closed in the target driving direction Dt, and the slide member 11 can be accurately arranged at the target position Pa. Therefore, the drive control of the slide member 11 can be accurately performed without installing a detection device for directly detecting the slide position. As a result, installation of a detection device can be avoided, so that in the structure provided with the slide member 11 that slides in the axial direction L, the size and cost of the interlocking engagement device 10 can be kept small.
Further, according to this configuration, the drive amount of the drive source 3 in the first start-up control is suppressed to the set drive amount Qs set to be less than the specific drive amount Q. As a result, the drive time of the drive source 3 for the first start-up control can be shortened. Therefore, the control of the engagement element 1 can be quickly started after the driving device 2 is activated.

In this embodiment, when the drive source 3 is stopped before the drive source 3 is driven by the set drive amount Qs during execution of the first start-up control, the control device 9 transfers the drive force of the drive source 3 to the slide member 11 . is less than (for example, zero) the convergence force of the detent mechanism 5 that converges on the target position Pa (here, the first position P1). After that, the control device 9 executes the first start-up control again.

According to this configuration, for example, even if an abnormality such as foreign matter is caught in the transmission mechanism 4 occurs, the abnormality can be resolved by executing the first startup control again. Increase your chances of doing it.

In the following description, the target driving direction Dt is referred to as "first driving direction D1". Then, the convergence range A is defined as "first convergence range A1". Further, the specific driving amount Q is set to "first driving amount Q1". Also, the set drive amount Qs is set to "first set drive amount Qs1".

In the present embodiment, the control device 9 executes the second start-up control when the slide position of the slide member 11 stored in the storage unit 91 is the second position P2 when the drive device 2 is started. As described above, in the present embodiment, the target position Pa is the first position P1, and the non-target position Pb is the second position P2. Therefore, in the present embodiment, when the sliding position of the slide member 11 stored in the storage unit 91 is the first position P1 when the driving device 2 is activated, the control device 9 performs the first activation control. is executed, and if it is at the second position P2, the second start-up control is executed.

In the second start-up control, the control device 9 drives the drive source 3 in the second drive direction D2 by a second set drive amount Qs2 set to be less than the second drive amount Q2. After that, the control device 9 sets the drive force of the drive source 3 to be less than (for example, zero) the convergence force of the detent mechanism 5 that converges the slide position of the slide member 11 to the second position P2.

Here, as shown in FIG. 2, the second driving direction D2 is the driving direction of the driving source 3 that slides the slide member 11 to the axial second side L2.

Further, as shown in FIG. 3, the second driving amount Q2 corresponds to moving the slide member 11 from the second position P2 to the end of the second axial side L2 in the second convergence range A2. is the driving amount of The second convergence range A2 is a range in which the convergence force of the detent mechanism 5 that converges the slide position to the second position P2 is generated. In the present embodiment, the second convergence range A2 is similar to the range between the end of the third peak portion 7C on the separation side J2 and the end portion of the fourth peak portion 7D on the separation side J2 in the axial direction L. It's size.

For convenience of explanation, in FIG. 3, a second convergence range A2 is defined between an end portion of the third peak portion 7C on the spaced side J2 and an end portion of the fourth peak portion 7D on the spaced side J2 in the axial direction L. Although shown, the second convergence range A2 is the range of slide positions of the slide member 11, so the actual position is different.

Similarly, the second drive amount Q2 and the second set drive amount Qs2 are also different from those shown in FIG. In this embodiment, the second drive amount Q2 is the axial direction L from the end of the third valley portion 6C on the approach side J1 corresponding to the second position P2 to the end of the fourth peak portion 7D on the separation side J2. is the driving amount of the driving source 3 for moving the slide member 11 by the length of . Therefore, in FIG. 3, the length in the axial direction L from the end of the third valley portion 6C on the approach side J1 to the end of the fourth peak portion 7D on the separation side J2 is indicated as the second driving amount Q2. . Further, in the present embodiment, the second set driving amount Qs2 forms the third valley portion 6C and the fourth peak portion 7D from the end of the third valley portion 6C on the approach side J1 corresponding to the second position P2. This is the driving amount of the driving source 3 for moving the slide member 11 by the length in the axial direction L up to the middle portion of the inclined surface 5a in the axial direction L. Therefore, in FIG. 3, the length in the axial direction L from the end of the third valley portion 6C on the approach side J1 to the intermediate portion in the axial direction L of the inclined surface 5a adjacent to the first axial side L1 is defined as the second length. It is shown as a set driving amount Qs2.

As described above, in the second startup control, after the drive source 3 is driven by the second set drive amount Qs2, the drive force of the drive source 3 causes the slide position of the slide member 11 to converge to the second position P2. be less than (eg, zero) the convergence force of the mechanism 5; Therefore, in the second start-up control of the present embodiment, after the detent member 51 has moved to the second side L2 in the axial direction to such an extent that the ball 53 does not exceed the fourth peak portion 7D, the force of the spring 54 causes the ball 53 to move. slides down the inclined surface 5a, and the detent member 51 moves to the first side L1 in the axial direction. As a result, the ball 53 fits into the third valley portion 6C, and the slide position of the slide member 11 converges to the second position P2.

Thus, in this embodiment, the target position Pa is the first position P1, the non-target position Pb is the second position P2,
The axially symmetrical side Lt is defined as an axially first side L1, and the opposite side is defined as an axially second side L2,
Let the target drive direction Dt be the first drive direction D1, the convergence range A be the first convergence range A1, the specific drive amount Q be the first drive amount Q1, the set drive amount Qs be the first set drive amount Qs1,
The drive direction of the drive source 3 that slides the slide member 11 to the second side L2 in the axial direction is defined as a second drive direction D2, and the range in which the convergence force of the detent mechanism 5 converges the slide position to the second position P2 is defined as the second direction. With a convergence range A2, the drive amount of the drive source 3 corresponding to moving the slide member 11 from the second position P2 to the end of the second axial side L2 in the second convergence range A2 is defined as a second drive amount Q2,
When the slide position stored in the storage unit 91 is the second position P2 when the drive device 2 is activated, the control device 9 sets the drive source 3 in the second drive direction D2 to less than the second drive amount Q2. After the second set drive amount Qs2 is driven, the second start-up control is executed to make the drive force of the drive source 3 less than the convergence force of the detent mechanism 5 .

According to this configuration, when the slide position stored in the storage unit 91 is the first position P1 when the drive device 2 is started, the first start-up control is executed, and when the slide position is the second position P2. Execute the second start-up control. As a result, regardless of whether the slide position at the previous stop was the first position P1 or the second position P2, the slide member 11 can be moved without installing a detection device for directly detecting the slide position. Accurate drive control is possible.
In addition, according to this configuration, the driving time of the drive source 3 for the control at the time of the first startup is shortened regardless of whether the slide position at the previous stop is the first position P1 or the second position P2. be able to. Therefore, the control of the engagement element 1 can be quickly started after the driving device 2 is activated.

As shown in FIG. 5, the detent mechanism 5 includes a restricting portion 55 in this embodiment. The restricting portion 55 is configured to restrict the movement of the slide member 11 to the axial symmetric side Lt (here, the axial first side L1) from the restricting position Pr. In this embodiment, the first wall portion C<b>1 functions as the restricting portion 55 . Specifically, since the slide member 11 abuts against the first wall portion C1 from the axial second side L2 at the restricted position Pr, the slide member 11 may move from the restricted position Pr to the axial first side L1. It is regulated by the first wall portion C1. Here, the regulation position Pr is located on the axial symmetric side Lt (here, the axial first side L1) with respect to the target position Pa (here, the first position P1) within the convergence range A (first convergence range A1). ).

In this embodiment, the set drive amount Qs (first set drive amount Qs1) is the drive amount of the drive source 3 for moving the slide member 11 from the target position Pa (here, the first position P1) to the regulation position Pr. is set to In FIG. 5, the length in the axial direction L from the end of the approach side J1 of the first valley portion 6A to the center of the spherical body 53 in the state where the slide member 11 is positioned at the regulating position Pr is defined as the set driving amount Qs ( It is shown as a first set driving amount Qs1).

As described above, in the present embodiment, the detent mechanism 5 includes the restricting portion 55 that restricts the movement of the slide member 11 toward the symmetrical side Lt in the axial direction from the restricting position Pr.
The regulation position Pr is set on the axial direction target side Lt with respect to the target position Pa within the convergence range A,
The set drive amount Qs is set to the drive amount of the drive source 3 for moving the slide member 11 from the target position Pa to the regulation position Pr.

According to this configuration, in the first start-up control, after driving the driving source 3 in the target driving direction Dt until the movement of the slide member 11 is restricted by the restricting portion 55, the driving force of the driving source 3 is transferred to the detent mechanism 5. can be controlled to be less than the convergence force of . As a result, the control of the drive source 3 in the first start-up control can be, for example, the control of driving the slide member 11 in the target drive direction Dt with a constant driving force until the movement of the slide member 11 is restricted by the restricting portion 55 . . Therefore, it is possible to further simplify the control at the time of the first start-up, and to more accurately arrange the slide member 11 at the target position Pa.

In this embodiment, the drive source 3 is an electric motor. The set drive amount Qs is set to a value equal to or greater than the electric angle of 360 degrees of the electric motor.

According to this configuration, in the first start-up control, it is possible to energize the entire control circuit of the electric motor (for example, all switching elements). Therefore, when there is an abnormality in the electric motor or the driver (inverter, etc.) of the electric motor, it is possible to increase the possibility of detecting the abnormality in the electric motor or the driver during execution of the first start-up control.

FIG. 6 is a flow chart showing an example of control processing by the control device 9, including the first start-up control and the second start-up control.

As shown in FIG. 6, first, the driving device 2 including the control device 9 is activated (step #1). Then, the control device 9 determines whether or not the slide position of the slide member 11 stored in the storage section 91 is the first position P1 (step #2).

When the slide position of the slide member 11 stored in the storage unit 91 is the first position P1 (step #2: Yes), the control device 9 executes first start-up control (step #3). On the other hand, if the slide position of the slide member 11 stored in the storage unit 91 is not the first position P1 (step #2: No), the control device 9 determines that the slide position of the slide member 11 stored in the storage unit 91 is It is determined whether or not it is the second position P2 (step #4).

When the slide position of the slide member 11 stored in the storage unit 91 is the second position P2 (step #4: Yes), the control device 9 executes the second startup control (step #5). On the other hand, if the slide position of the slide member 11 stored in the storage unit 91 is not the second position P2 (step #4: No), the control device 9 performs both the first start-up control and the second start-up control. Without executing, control is executed from step #7 to be described later.

As shown in FIG. 7, in the first startup control, the control device 9 drives the driving source 3 in the first driving direction D1 (step #31). Then, the control device 9 checks whether or not the drive source 3 has stopped due to an abnormality such as a foreign object being caught in the transmission mechanism 4 (step #32). If the drive source 3 is stopped (step #32: Yes), the control device 9 executes the first start-up control again for the purpose of resolving the above abnormality. is less than (for example, zero) the convergence force of the detent mechanism 5 that converges the slide position of the slide member 11 to the first position P1 (step #33). As a result, the convergence force of the detent mechanism 5 converges the slide position of the slide member 11 to the first position P1. After that, the control device 9 executes again from the above step #31.

On the other hand, if the drive source 3 is not stopped (step #32: No), the control device 9 determines whether the drive source 3 is driven in the first drive direction D1 by the first set drive amount Qs1 (step #34). When the control device 9 determines that the driving source 3 is not driven in the first driving direction D1 by the first set driving amount Qs1 (step #34: No), the control device 9 executes again from the above step #31. On the other hand, when the controller 9 determines that the drive source 3 has driven the drive source 3 by the first set drive amount Qs1 in the first drive direction D1 (step #34: Yes), the drive force of the drive source 3 is applied to slide the slide member 11. It is less than (for example, zero) the convergence force of the detent mechanism 5 that converges the position to the first position P1 (step #35).

As shown in FIG. 8, in the second startup control, the control device 9 drives the driving source 3 in the second driving direction D2 (step #51). Then, the control device 9 checks whether or not the drive source 3 has stopped due to an abnormality such as foreign matter being caught in the transmission mechanism 4 (step #52). If the drive source 3 is stopped (step #52: Yes), the control device 9 executes the second start-up control again for the purpose of resolving the above-mentioned abnormality. is less than (for example, zero) the convergence force of the detent mechanism 5 that converges the slide position of the slide member 11 to the second position P2 (step #53). As a result, the convergence force of the detent mechanism 5 converges the slide position of the slide member 11 to the second position P2. After that, the control device 9 executes again from the above step #51.

On the other hand, if the drive source 3 is not stopped (step #52: No), the control device 9 determines whether the drive source 3 has been driven in the second drive direction D2 by the second set drive amount Qs2 (step #54). When the control device 9 determines that the driving source 3 is not driven in the second driving direction D2 by the second set driving amount Qs2 (step #54: No), the control device 9 executes again from the above step #51. On the other hand, when the control device 9 determines that the drive source 3 has driven in the second drive direction D2 by the second set drive amount Qs2 (step #54: Yes), the drive force of the drive source 3 is applied to the slide member 11 to slide. It is less than (for example, zero) the convergence force of the detent mechanism 5 that converges the position to the second position P2 (step #55).

As shown in FIG. 6, after the completion of the first start-up control or the second start-up control, the control device 9 causes the slide member 11, which is converged by the convergence force of the detent mechanism 5 and has stopped moving in the axial direction L, to move. The slide position is set as the reference position (step #6). This reference position is used when calculating the relative position of the slide member 11 moving in the axial direction L in the speed change control of the transmission TM.

Thereafter, when there is a request to stop the driving device 2 including the control device 9 (step #7: Yes), the control device 9 stores the current slide position of the slide member 11 in the storage unit 91 (step #8). . Then, the driving device 2 is stopped (step #9).

FIG. 9 is a time chart showing an example of the first start-up control. As shown in FIG. 9, in order to drive the driving source 3 in the first driving direction D1, the driving force of the driving source 3 is controlled to approach the first driving force T1 from time t1 to time t2. Along with this, the slide member 11 positioned at the pre-adjustment position P1a included in the first position P1 corresponding to the first engagement state (here, the state in which the transmission TM is in the low-speed stage) is shifted from time t1 to It gradually moves toward the regulation position Pr. At this time, the driving force of the driving source 3 is maintained at the first driving force T1.

After that, at time t3, the slide member 11 reaches the regulation position Pr. After the slide member 11 is maintained at the regulating position Pr, the drive force of the drive source 3 is controlled to approach zero from time t4 to time t5. Accordingly, the convergence force of the detent mechanism 5 moves the slide member 11 to the post-adjustment position P1b closer to the regulation position Pr than the pre-adjustment position P1a. This post-adjustment position P1b is used as a reference position for the slide position. Note that the post-adjustment position P1b is also included in the first position P1, like the pre-adjustment position P1a. The pre-adjustment position P1a and the post-adjustment position P1b are different due to an error due to backlash of the transmission mechanism 4 or the like. That is, the error in the slide position caused by the backlash of the transmission mechanism 4 or the like is eliminated by the first start-up control.

[Other embodiments]
(1) In the above-described embodiment, when the slide position of the slide member 11 stored in the storage unit 91 is the third position P3 when the driving device 2 is started, the first start-up control and the second start-up control are performed. Although the configuration in which none of the above is executed has been described as an example, the following third start-up control may be executed. For example, in the third start-up control, the slide member 11 is moved to a specified position within the third convergence range A3 (see FIG. 3) where the convergence force of the detent mechanism 5 for converging the slide position to the third position P3 is generated. After driving the driving source 3 so as to move, the driving force of the driving source 3 is made less than the convergence force of the detent mechanism 5 (for example, zero).

(2) In the above-described embodiment, the configuration in which the slide member 11 slides between the first position P1, the second position P2, and the third position P3 has been described as an example. However, without being limited to such a configuration, the slide member 11 may slide between the first position P1 and the second position P2. Alternatively, the slide member 11 may slide between four or more positions including the first position P1, the second position P2, and the third position P3.

(3) In the above-described embodiment, the configuration in which the target position Pa is the first position P1 and the non-target position Pb is the second position P2 has been described as an example. However, without being limited to such a configuration, the target position Pa may be the second position P2 and the non-target position Pb may be the first position P1.

(4) In the above-described embodiment, the detent mechanism 5 moves the slide member 11 axially beyond the restricting position Pr, which is set on the first side L1 in the axial direction with respect to the first position P1 within the first convergence range A1. A regulating portion 55 for regulating movement to the first side L1 is provided, and a first set driving amount Qs1 is set to a driving amount of the driving source 3 for moving the slide member 11 from the first position P1 to the regulating position Pr. The configuration was described as an example. However, without being limited to such a configuration, the first set drive amount Qs1 is set to a value different from the drive amount of the drive source 3 for moving the slide member 11 from the first position P1 to the regulation position Pr. It's okay to be. Further, the slide member 11 moves toward the axial second side L2 from the second regulation position where the detent mechanism 5 is set on the axial second side L2 with respect to the second position P2 within the second convergence range A2. A second restricting portion that restricts movement may be provided. In this configuration, it is preferable that the second set drive amount Qs2 is set to the drive amount of the drive source 3 for moving the slide member 11 from the second position P2 to the second restriction position.

(5) In the above-described embodiment, the configuration in which the drive source 3 is an electric motor has been described as an example. However, without being limited to such a configuration, the drive source 3 may be, for example, an actuator such as a solenoid or a hydraulic cylinder.

(6) In the above embodiment, when the driving source 3 stops during execution of the first start-up control, the first start-up control is executed again as an example. However, without being limited to such a configuration, for example, if the driving source 3 stops during execution of the first startup control, a configuration may be adopted in which the first startup control is not executed.

(7) It should be noted that the configurations disclosed in the respective embodiments described above can be applied in combination with configurations disclosed in other embodiments as long as there is no contradiction. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate without departing from the scope of the present disclosure.

The technology according to the present disclosure can be used in a meshing engagement device that includes a meshing engagement element and a driving device that drives the engagement element.

10: mesh type engagement device, 1: engagement element, 11: slide member, 2: drive device, 3: drive source, 4: transmission mechanism, 5: detent mechanism, 9: control device, 91: storage unit, P1 : first position, P2: second position, Pa: target position, Pb: non-target position, A: convergence range, Q: specific drive amount, Qs: set drive amount, L: axial direction, Lt: axial direction target side , Dt: target drive direction

Claims (5)

A meshing engagement device comprising a meshing engagement element and a driving device for driving the engagement element,
The engagement element includes a slide member that slides in a prescribed axial direction, and is configured to shift between a first engagement state and a second engagement state by sliding movement of the slide member,
The driving device includes a driving source, a transmission mechanism for transmitting driving force of the driving source to the slide member, a detent mechanism for holding a slide position, which is a position of the slide member in the axial direction, and the drive. a controller for controlling the source;
The detent mechanism generates a convergence force that causes the slide position to converge to a first position corresponding to the first engagement state and a second position corresponding to the second engagement state,
One of the first position and the second position is set as a target position, and the other is set as a non-target position,
A side toward the symmetrical position from the asymmetrical position in the axial direction is defined as an axially symmetrical side,
The drive direction of the drive source for slidingly moving the slide member to the axial direction target side is defined as the target drive direction,
A convergence range is defined as a range in which the convergence force of the detent mechanism for converging the slide position to the target position is generated,
A drive amount of the drive source corresponding to moving the slide member from the target position to the end of the convergence range on the target side in the axial direction is defined as a specific drive amount,
The control device includes a storage unit that stores the slide position when the drive device is stopped, and when the slide position stored in the storage unit is the target position when the drive device is started, After driving the drive source in the target drive direction by a set drive amount set to be less than the specific drive amount, a first start-up control is performed to set the drive force of the drive source to be less than the convergence force. combination device. The target position is the first position, the non-target position is the second position,
The axially symmetrical side is defined as an axially first side, and the opposite side is defined as an axially second side,
The target drive direction is a first drive direction, the convergence range is a first convergence range, the specific drive amount is a first drive amount, and the set drive amount is a first set drive amount,
A driving direction of the driving source for slidingly moving the slide member to the second side in the axial direction is defined as a second driving direction, and a range in which the convergence force of the detent mechanism converges the slide position to the second position is defined as a second driving direction. 2 convergence ranges, and the drive amount of the drive source corresponding to moving the slide member from the second position to the end portion on the second side in the axial direction in the second convergence range is defined as a second drive amount,
When the slide position stored in the storage unit is the second position at the time of activation of the drive device, the control device moves the drive source in the second drive direction to less than the second drive amount. 2. The meshing type engagement device according to claim 1, wherein, after driving by a set second set driving amount, a second start-up control is executed so that the driving force of said driving source is less than said convergence force. The detent mechanism includes a restricting portion that restricts the slide member from moving toward the symmetrical side in the axial direction from the restricting position,
the regulating position is set on the symmetrical side in the axial direction with respect to the symmetrical position within the convergence range;
3. The meshing type engagement device according to claim 1, wherein said set drive amount is set to a drive amount of said drive source for moving said slide member from said target position to said restriction position. The drive source is an electric motor,
The meshing type engagement device according to any one of claims 1 to 3, wherein the set drive amount is set to a value equal to or greater than an electrical angle of 360 degrees of the electric motor. If the drive source is stopped before being driven by the set drive amount during execution of the first start-up control, the control device reduces the drive force of the drive source to less than the convergence force, and then The meshing type engagement device according to any one of claims 1 to 4, wherein the first start-up control is executed again.

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