JP2015098894A - Shifter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shifter capable of performing a proper shift operation by an alternative actuator when one actuator becomes abnormal.SOLUTION: A shifter 100 includes an output shaft 50 capable of rotating a detent plate 60 to a plurality of positions corresponding to P, R, N, and D positions; and a main motor 10 and a sub-motor 30 for driving the output shaft 50. When abnormality occurs to the main motor 10 or a normal transmission path A from the main motor 10 to the output shaft 50, the main motor 10 and a flange part 52 of the output shaft 50 are disengaged from each other, and the sub-motor and the flange part 52 are engaged with each other to transmit the driving power of the sub-motor to the output shaft 50.

Description

  The present invention relates to a shift device.

  Conventionally, a shift-by-wire type shift device that switches a shift state electrically based on a user's shift operation is known (see, for example, Patent Document 1).

  Patent Document 1 discloses a shift-by-wire system including an actuator that operates based on a control signal corresponding to a user's shift operation, and a shift switching mechanism (shift switching member) that switches a shift state when driven by the actuator. An automatic transmission range switching device (shift device) is disclosed. In the range switching device described in Patent Document 1, two types of actuators (a high torque type and a low torque type) are used as a detent plate as a shift switching mechanism and a driven gear that rotates a rotation shaft connected thereto. Each driving gear of the electric motor is always connected. During normal operation, the low-torque actuator (main motor) is driven to rotate the rotary shaft. On the other hand, when the low-torque actuator malfunctions, the high-torque actuator (sub motor) is driven to rotate the rotary shaft. Control to rotate is performed. Since the driving gears of both the high torque type and the low torque type actuators are always connected to the driven gear that rotates the rotating shaft, the rotating shaft (driven gear) of the high torque type actuator (sub motor) Along with the rotation, the failed low torque type actuator (main motor) is also rotated.

Japanese Patent No. 4285150

  However, in the range switching device (shift device) described in Patent Document 1, the driving gears of the two actuators, the high torque type and the low torque type, are always meshed with the driven gear of the rotating shaft. When the high-torque actuator (sub motor) is driven to rotate the rotary shaft when the actuator (main motor) fails (abnormality), for example, the locked state where the low torque actuator (sub motor) cannot be rotated In such a case, it is considered that the rotation shaft may not be rotated normally even if the high torque type actuator (main motor) is driven. For this reason, there is a problem in that the shift device may not be operated properly even if the sub motor (high torque type actuator) as a substitute is normal when an abnormality occurs in the main motor (low torque type actuator). .

  The present invention has been made to solve the above-described problems, and one object of the present invention is to perform an appropriate shift operation by an alternative actuator when an abnormality occurs in one actuator. It is to provide a shift device.

  In order to achieve the above object, a shift device according to one aspect of the present invention is a shift device mounted on a vehicle, and a shift switching member movable to a plurality of positions corresponding to each of a plurality of shift positions. A first actuator and a second actuator for driving the shift switching member, and when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the first actuator and the shift are shifted. The engagement state with the switching member is released, and the second actuator and the shift switching member are switched to an engagement state in which the driving force of the second actuator can be transmitted to the shift switching member. Has been.

  In the shift device according to one aspect of the present invention, as described above, when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the first actuator and the shift switching member The engagement state between the second actuator and the shift switching member can be switched to an engagement state in which the driving force of the second actuator can be transmitted to the shift switching member. The driving force transmission path from the side of the first actuator that has caused an abnormality to the shift switching member is completely cut off, and the first actuator is not used and the alternative second actuator is replaced with the shift switching member. It is possible to switch to a state in which the driving force transmission path functions effectively. As a result, regardless of the abnormal condition around the first actuator (the locked state of the first actuator itself or the presence or absence of an inoperable event in the driving force transmission path from the first actuator to the shift switching member), the second actuator side When the driving force transmission path is completely switched, the second actuator can be driven to normally drive (turn) the turning shaft (output shaft). Accordingly, an appropriate shift operation can be performed by an alternative actuator (second actuator) when an abnormality occurs in one actuator (first actuator side).

  In the shift device according to the one aspect, preferably, a first driving force transmission member that is interposed between the shift switching member and the first actuator and transmits the driving force of the first actuator to the shift switching member, and the shift switching member. And a second driving force transmitting member that is interposed between the first actuator and the second actuator and transmits the driving force of the second actuator to the shift switching member, and the driving force from the first actuator or the first actuator to the shift switching member. When an abnormality occurs in the transmission path, the engagement between at least one of the shift switching member and the first actuator and the first driving force transmission member is released, and the shift switching member, the second actuator, and the second drive are released. By switching so that the force transmission member is engaged, the driving force of the second actuator is changed to the second driving force. It is configured to be transmitted to the shift switching member through the reach member. If comprised in this way, to the shift switching member from the 1st actuator side which came abnormal by releasing the engagement between at least one of the shift switching member and the 1st actuator, and the 1st driving force transmission member The driving force transmission path of the first actuator can be easily interrupted, and the shift switching member, the second actuator, and the second driving force transmission member are engaged with each other without using the first actuator. It is possible to easily switch to a state where the driving force transmission path from the two actuators to the shift switching member functions effectively. As a result, regardless of the abnormal state around the first actuator, the normal second actuator can be driven to drive (rotate) the rotation shaft (output shaft) reliably and normally.

  In the configuration further including the first driving force transmission member and the second driving force transmission member, preferably, the shift switching member and the first driving force transmission member are configured so that the driving force of the first actuator can be transmitted to the shift switching member. A first engagement state that engages with the shift switching member and a second engagement state that engages the shift switching member and the second driving force transmission member so that the driving force of the second actuator can be transmitted to the shift switching member. The engaging member further includes a possible engaging member, and the engaging member is changed from the first engaging state to the second engaging state when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member. It is comprised so that it can switch to. If comprised in this way, the engagement state between a 1st actuator and a shift switching member is reliably cancelled | released based on the switching operation from the 1st engagement state by an engagement member to a 2nd engagement state, In addition, the engagement between the second actuator and the shift switching member can be reliably shifted to an engagement state in which the driving force of the second actuator can be transmitted to the shift switching member.

  In the configuration further including the engagement member, preferably, the first driving force transmission member includes a first engagement portion that engages with the engagement member, and the second driving force transmission member engages with the engagement member. The shift switching member is disposed between the first engagement portion and the second engagement portion, and includes a third engagement portion with which the engagement member engages, and the first actuator Alternatively, when an abnormality occurs in the driving force transmission path from the first actuator to the shift switching member, the engagement member is engaged from the first engagement state where the engagement member engages with the first engagement portion and the third engagement portion. It is comprised so that a member may be switched to the 2nd engagement state engaged with a 2nd engagement part and a 3rd engagement part. If comprised in this way, from the 1st engagement state which an engagement member engages with a 1st engagement part and a 3rd engagement part, it is the 2nd engagement engaged with a 2nd engagement part and a 3rd engagement part. By switching to the combined state, the engagement state between the first actuator and the shift switching member is surely released, and at the same time, the driving force of the second actuator is exerted between the second actuator and the shift switching member. It is possible to smoothly shift to an engaged state that can be transmitted to the shift switching member.

  In the configuration in which the first driving force transmission member and the second driving force transmission member include the first engagement portion and the second engagement portion, respectively, preferably, the first driving force transmission member and the second driving force transmission member are: It is attached to the shift switching member so as to be rotatable. In the first engagement state, the first engagement portion of the first driving force transmission member and the third engagement portion of the shift switching member overlap, and the first The driving force transmission path from the first actuator or the first actuator to the shift switching member is arranged so that the engaging portion and the third engaging portion do not overlap with the second engaging portion of the second driving force transmitting member. When an abnormality occurs in the first engagement portion, the second engagement portion is rotated to a position overlapping the first engagement portion and the third engagement portion, and the engagement member is moved to the first engagement portion and the third engagement. From the first engagement position that engages the portion, the second engagement By being moved to a minute, and third second engaging position engaging portion engages, and a first engagement to be switched to the second engagement state. According to this structure, when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion is connected to the first engagement portion and the third engagement portion. The engagement member is moved from the first engagement state in which the engagement member is engaged with the first engagement portion and the third engagement portion at the first engagement position by the movement of the overlapping position to the second engagement portion. It is possible to easily switch to the second engagement state where the engagement portion and the third engagement portion are engaged at the second engagement position.

  In the configuration in which the first driving force transmission member and the second driving force transmission member are rotatably attached to the shift switching member, it is preferable that the driving force transmission path from the first actuator or the first actuator to the shift switching member is abnormal. Is generated, the second engagement portion is rotated to a position overlapping the first engagement portion and the third engagement portion by the driving force of the second actuator, and the engagement member is moved from the first engagement position. By moving to the second engagement position, the first engagement state is switched to the second engagement state. If comprised in this way, the 2nd engagement part can be easily rotated to the position which overlaps with a 1st engagement part and a 3rd engagement part, utilizing the driving force which a 2nd actuator has effectively. Thereby, it can switch easily from the 1st engagement state which an engagement member engages in a 1st engagement position to the 2nd engagement state engaged in a 2nd engagement position.

  In this case, preferably, when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, an angle at which the second driving force transmission member rotates once by the driving force of the second actuator. By being rotated within the range, the second engagement portion is configured to be rotated to a position overlapping the first engagement portion and the third engagement portion. According to this configuration, the second engagement portion can be reliably rotated to a position overlapping the first engagement portion and the third engagement portion until the second driving force transmission member is rotated once. Therefore, the engagement member can be reliably moved from the first engagement position to the second engagement position.

  In the configuration in which the first driving force transmission member and the second driving force transmission member are rotatably attached to the shift switching member, preferably, a biasing member that biases the engagement member toward the second engagement portion is further provided. And when the abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion is rotated to a position overlapping the first engagement portion and the third engagement portion. In this state, the engagement member is moved from the first engagement position to the second engagement position by the urging force of the urging member so that the first engagement state is switched to the second engagement state. It is configured. If comprised in this way, it is the 2nd engagement from the 1st engagement position side (state engaged with the 1st engagement part and the 3rd engagement part) using the biasing force of the biasing member. It can be easily moved to the position side (a state engaged with the second engagement portion and the third engagement portion). That is, unlike the case where a dedicated actuator for moving the engagement member is further provided, the shift can be performed by moving the engagement member using the biasing force of the biasing member without providing such an actuator. It is possible to prevent the apparatus configuration from becoming complicated. Further, since it is not necessary to provide a dedicated actuator for moving the engagement member, it is possible to save power in the shift device.

  In this case, it is preferable that the first engagement portion of the first driving force transmission member is housed so that the engagement member can be moved to the second engagement portion side by the other end of the biasing member having one end attached to the bottom. The length of the first engagement hole is smaller than the depth of the first engagement hole. According to this structure, when the engagement member is moved from the first engagement position side to the second engagement position side using the urging force of the urging member, one end is the bottom of the first engagement hole. Since the length (natural length) of the urging member fixed to the urging member is smaller (shorter) than the depth of the first engagement hole, the other end side of the urging member is the first engagement hole. From this, it is possible to prevent the third engagement portion disposed between the first engagement portion and the second engagement portion from protruding. Therefore, the first engagement state where the engagement member engages with the third engagement portion and the first engagement portion is released, the engagement member is switched to the second engagement state, and the driving force of the second actuator is increased. Even when transmitted to the shift switching member via the second driving force transmission member, the other end of the urging member is caught in the rotating third engagement portion (shift switching member) and shifted by the second actuator. It is possible to reliably prevent troubles in driving the switching member.

  In the configuration in which the first driving force transmission member and the second driving force transmission member are rotatably attached to the shift switching member, preferably, the engagement member is made of a magnetic material, and the engagement member is in the second engagement state. And a magnetic member that attracts the magnetic force by the magnetic force, and when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion is the first engagement portion and the third engagement portion. In a state where the magnetic member is rotated to a position overlapping with the engaging portion, the state in which the magnetic member is switched from the first engaging state to the second engaging state is maintained. According to this structure, the second engaging state in which the engaging member is moved to the second engaging position and the engaging member engages with the third engaging portion and the second engaging portion is referred to as the attractive force of the magnet member. Therefore, even if unexpected vibration is applied to the shift device, it is possible to effectively suppress the second engagement state from being released due to the vibration. . Accordingly, the shift switching member can be reliably driven (turned) by the second actuator.

  In the configuration in which the first driving force transmission member and the second driving force transmission member include the first engagement portion and the second engagement portion, respectively, the first engagement portion, the second engagement portion, and the third engagement are preferable. The coupling portion includes a first engagement hole, a second engagement hole, and a third engagement hole, respectively, and the engagement member is engaged with the first engagement hole, the second engagement hole, and the third engagement hole. Engaging pin, and when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the engaging pin is inserted into the first engaging hole and the third engaging hole. The engaging pin is configured to be switched from the engaging first engaging state to the second engaging state in which the engaging pin engages with the second engaging hole and the third engaging hole. If comprised in this way, from the state which engaged the engagement pin with the 1st engagement hole and the 3rd engagement hole, and established the 1st engagement state, the 2nd engagement hole and the 3rd engagement Switching operation to a state in which the engagement pin is engaged with the hole to establish the second engagement state can be easily performed. Therefore, it is possible to quickly switch to an appropriate shift operation by the second actuator as a substitute when an abnormality occurs on the first actuator side.

  In the shift device according to the above aspect, the first actuator is preferably a main actuator having a predetermined driving force, and the second actuator is a subactuator having a driving force smaller than the predetermined driving force of the first actuator. It is. With this configuration, the sub-actuator having a smaller driving force than the main actuator can be used to perform an appropriate shift operation by the sub-actuator when an abnormality occurs on the main actuator side. As a result of being able to be mounted on the shift device, the entire shift device can be prevented from becoming large even if a plurality (two) of actuators are mounted. Further, the power consumption of the shift device can be reduced by using the miniaturized subactuator.

  In the present application, apart from the shift device according to the above aspect, the following other configurations are also conceivable.

(Additional notes)
That is, the shift device according to another configuration of the present application is configured such that the first driving force transmission member is swung by the first actuator with a predetermined rotation angle range. When an abnormality occurs in the driving force transmission path from the actuator to the shift switching member, the second driving force transmission member is rotated by the second actuator with a rotation angle larger than a predetermined rotation angle range. Accordingly, the engagement between at least one of the shift switching member and the first actuator and the first driving force transmission member is released, and the shift switching member, the second actuator, and the second driving force transmission member are engaged. It is configured to be switched as described above. With this configuration, the first driving force transmission can be performed while the first driving force transmission member is being swung within the predetermined rotation angle range by the first actuator without causing any abnormality on the first actuator side. It can be easily avoided that the shift switching member, the second actuator, and the second driving force transmission member are erroneously engaged with each other due to the rotation of the member.

  According to the present invention, as described above, there is provided a shift device capable of performing an appropriate shift operation by an alternative actuator (second actuator) when an abnormality occurs on one actuator side (first actuator side). be able to.

1 is a perspective view schematically showing an overall configuration of a shift device according to an embodiment of the present invention. It is the perspective view which showed the shift switching mechanism which comprises the shift apparatus by one Embodiment of this invention. It is the top view which showed the structure in case the drive force transmission mechanism of the shift apparatus by one Embodiment of this invention is a 1st engagement state. It is sectional drawing which showed the structure in case the drive force transmission mechanism of the shift apparatus by one Embodiment of this invention is a 1st engagement state. It is the top view which showed the state in the middle of the drive force transmission mechanism of the shift apparatus by one Embodiment of this invention switching from a 1st engagement state to a 2nd engagement state. It is sectional drawing which showed the state in the middle of the drive force transmission mechanism of the shift apparatus by one Embodiment of this invention switching from a 1st engagement state to a 2nd engagement state. It is sectional drawing which showed the structure when the driving force transmission mechanism of the shift device by one Embodiment of this invention will be in a 2nd engagement state. It is the figure which showed the control processing flow of ECU regarding the abnormality determination of a main motor in the shift apparatus by one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  With reference to FIGS. 1-7, the structure of the shift apparatus 100 by one Embodiment of this invention is demonstrated. Hereinafter, after describing a schematic configuration of the shift device 100, a detailed configuration will be described.

  A shift device 100 according to an embodiment of the present invention is mounted on an automobile (vehicle). As shown in FIG. 1, the shift device 100 performs shift change control electrically via a dedicated ECU 120 when a user performs a shift switching operation via an operation unit 110 such as a shift position switch. Applies to by-wire (SBW). That is, shift device 100 is based on a control signal M1 transmitted from ECU 120, and any one of a P (parking) position, an R (reverse) position, an N (neutral) position, and a D (drive) position corresponding to a user operation. The shift mechanism of the vehicle (not shown) is switched to the shift state. Each of the P, R, N, and D positions is an example of the “shift position” in the present invention.

  The shift device 100 includes an actuator unit 1, a shift switching mechanism 2, and a rotation angle sensor 3. The actuator unit 1 outputs a driving force for driving the shift switching mechanism 2. Further, when the shift switching mechanism 2 is driven by the actuator unit 1, the shift state of the transmission mechanism portion mounted on the vehicle body is mechanically switched. The rotation angle sensor 3 (shown by a broken line) is electrically connected to the ECU 120 and has a function of detecting the rotation angle of the output shaft 50 of the driving force transmission mechanism 20 described later.

  The actuator unit 1 includes a main motor 10 and a driving force transmission mechanism 20 mainly including a gear member that transmits a driving force (rotational power) from the main motor 10 to rotate the detent plate 60. It has been. The casing 1a is provided with a socket 1b having a terminal portion 1c. In FIG. 1, the configuration in which the control signal M1 or the rotation angle detection signal M2 is transmitted and received between the ECU 120 and the main motor 10, the sub motor 30 described later, and the rotation angle sensor 3 is indicated by a broken line. A wiring (not shown) is connected to the main motor 10, the sub motor 30, and the rotation angle sensor 3 from the terminal portion 1c. The actuator unit 1 is electrically connected to a control circuit unit (not shown) in which the ECU 120 is built in via a wiring cable (not shown) connected to the socket 1b. The main motor 10 is an example of the “first actuator” and the “main actuator” in the present invention. The sub motor 30 is an example of the “second actuator” and the “sub actuator” in the present invention.

  The driving force transmission mechanism 20 includes an output shaft (rotating shaft) 50 for outputting the driving force to the shift switching mechanism 2, and the output shaft 50 is connected to the detent plate 60 constituting the shift switching mechanism 2. Has been. The output shaft 50 and the detent plate 60 are an example of the “shift switching member” in the present invention.

  As shown in FIG. 2, the shift switching mechanism 2 includes a detent plate 60, an L-shaped parking rod 70 and a manual valve rod 80 fixedly connected to the detent plate 60, and a parking device 90. The detent plate 60 is fixedly connected to the lower end portion (end portion on the Z2 direction side) of the output shaft 50, and the detent plate 60 is integrated with the output shaft 50 around the output shaft 50 (rotating shaft C1). Is rotated. Specifically, the detent plate 60 is rotated (swinged) to rotation angle positions corresponding to the P position, the R position, the N position, and the D position. Further, the parking rod 70 and the manual valve rod 80 are configured to move to predetermined positions as the detent plate 60 rotates.

  The manual valve rod 80 is a rod that switches a hydraulic control circuit (not shown) of a transmission mechanism (transmission) in response to a user's shift operation. For example, when the detent plate 60 is rotated to the rotation angle position corresponding to the R position, the manual valve rod 80 is moved to a predetermined position corresponding to the R position, so that the hydraulic control corresponding to the R position is performed. A circuit is formed. In the other shift states as well as the R position, the manual valve rod 80 is moved to a position corresponding to one of the shift states as the detent plate 60 rotates, so that a predetermined shift position is set in the transmission mechanism. A hydraulic control circuit corresponding to is formed.

  Parking device 90 includes a parking gear 91 coupled to a crankshaft (not shown) and a lock pole 92 that engages with parking gear 91. The lock pole 92 is moved to the locked position and the unlocked position as the parking rod 70 moves. When the detent plate 60 is rotated to the rotation angle position corresponding to the P position, the lock pole 92 is rotated to the lock position with the rotation axis C <b> 2 as the rotation center, and the protrusion 92 a of the parking gear 91. It is comprised so that it may engage with the tooth | gear part 91a. Thereby, the free rotation of the parking gear 91 is restricted, and the rotation of the crankshaft is restricted. Further, when the detent plate 60 is rotated to a rotation angle position corresponding to a shift state (R position, N position, and D position) other than the P position, the lock pole 92 is rotated to the non-lock position. Thus, the engagement between the lock pole 92 and the parking gear 91 is released.

  Next, a detailed configuration of the shift device 100 will be described.

  As shown in FIG. 1, in the actuator unit 1, a main motor 10 is fixed at a predetermined position in the casing 1a. The main motor 10 is configured to rotate a worm gear 12 disposed on the side of the main motor 10 via a small gear 11a and a large gear 11b made of spur gears fixed to the rotating shaft 10a. . The small gear 11a, the large gear 11b, and the worm gear 12 constitute a part of the driving force transmission mechanism 20.

  Further, as shown in FIG. 3, the driving force transmission mechanism 20 has a main gear 21 disposed on one side (Z1 side) and a flange side 52 (described later) of the output shaft 50 and the other side (Z2 side). A sub-gear 22 is provided. The output shaft 50 includes a shaft portion 51 extending in a rod shape, and a flange portion 52 whose outer surface is enlarged in a partial region of the shaft portion 51. The flange portion 52 is formed integrally with the shaft portion 51, and connects the large diameter portion 52a having a fan shape with a relatively large flat area and a portion other than the large diameter portion 52a in a circumferential shape (arc shape). A small-diameter portion 52b that is larger in diameter than the outer surface of the shaft portion 51 and smaller in diameter than the large-diameter portion 52a. Here, the output shaft 50 is made of metal, and the main gear 21 and the sub gear 22 are made of resin.

  The main gear 21 driven by the main motor 10 includes a main body 21a formed in a fan shape, and a through hole 21b arranged on the base side (center side) of the fan-shaped main body 21a (see FIG. 4). ) And a gear portion 21c formed of a helical gear with which the worm gear 12 is engaged with the outer peripheral portion of the arc portion of the main body portion 21a. Note that the gear portion 21c has a rotation angle range of about 40 degrees as the worm gear 12 rotates forward and backward, so that the main gear 21 is rotated forward or backward clockwise or counterclockwise. It is formed only in a predetermined region of the outer peripheral portion having a partial arc shape. A bearing member 41 having a fluororesin layer formed on the surface of a metal main body is press-fitted into the inner side surface of the through hole 21 b of the main gear 21, and the inner side surface of the bearing member 41 is the shaft portion 51. It is comprised so that it may slide smoothly with respect to the outer surface.

  A sub gear 22 driven by a sub motor 30 to be described later includes a circular main body 22a, a through hole 22b (see FIG. 4) disposed at the center of the main body 22a, and the main body 22a. The outer peripheral portion has a gear portion 22c formed of a helical gear with which a worm gear 32 connected to the sub motor 30 is engaged. Further, a bearing member 42 configured in the same manner as the bearing member 41 is press-fitted into the inner side surface of the through-hole portion 22 b of the sub gear 22, and the inner side surface of the bearing member 42 is smooth with respect to the outer side surface of the shaft portion 51. It is configured to slide. The gear shape of the gear portion 22 c of the sub gear 22 is smaller than the gear shape of the gear portion 21 c of the main gear 21. 3 and 5, the shapes of the gear portion 21 c and the gear portion 22 c that are actually “helical gears” are shown as simple planar gear shapes for convenience of illustration. The main gear 21 and the sub gear 22 are examples of the “first driving force transmission member” and the “second driving force transmission member” of the present invention, respectively.

  As shown in FIG. 4, the main gear 21 is disposed on the upper surface 53 of the flange portion 52 in a state where the bearing member 41 (through hole portion 21 b) is inserted into the shaft portion 51 from the Z <b> 1 side. The sub gear 22 is arranged under the lower surface 54 of the flange portion 52 in a state where the bearing member 42 (through hole portion 22b) is inserted from the Z2 side. Further, the retaining member 23 also serving as a bearing function is inserted into the main gear 21 from the Z1 side, and the retaining member 24 also serving as a bearing function is inserted into the sub gear 22 from the Z2 side. The assembled state of 21 and the sub gear 22 is maintained. A rotation angle sensor 3 is disposed between the retaining member 24 and the bottom surface 1d of the casing 1a.

  The main body 21a of the main gear 21 is provided with a cylindrical accommodating portion 21d that is open on the Z2 side facing the flange portion 52, has a bottom portion 21e, and is recessed in the Z1 direction. In addition, one end 25a of a coiled spring 25 having a natural length of a predetermined length is attached to the bottom portion 21e serving as a ceiling portion of the accommodating portion 21d. The large-diameter portion 52a of the flange portion 52 is provided with a circular pin hole 52c penetrating in the thickness direction. Here, the accommodating portion 21d and the pin hole 52c have the same inner diameter, and are formed at the same position (position of the radius R1) along the radial direction from the rotation axis C1 of the output shaft 50. 3, the main body 21a (accommodating portion 21d) of the main gear 21 and the large-diameter portion 52a (pin hole 52c) of the flange portion 52 are overlapped, and the accommodating portion 21d and the pin hole 52c (FIG. 4), the engaging pin 26 is configured to be disposed across the pin hole 52c and the accommodating portion 21d, as shown in FIG. The accommodating portion 21d is an example of the “first engagement portion” and the “first engagement hole” in the present invention. The pin hole 52c is an example of the “third engagement portion” and the “third engagement hole” in the present invention. The engagement pin 26 is an example of the “engagement member” in the present invention.

  The engaging pin 26, which has a cylindrical outer shape and is made of a magnetic material, has a seat portion 26a into which the other end 25b of the spring 25 is inserted and receives the urging force (extension force) of the spring 25, and on the opposite side of the seat portion 26a. It has the head 26b located. And the flat part (upper surface area 22e in which the accommodating part 22d mentioned later is not formed) of the main-body part 22a of the sub gear 22 is in a state where the accommodating part 21d and the pin hole 52c are penetrated in the Z direction. In a state where 52c is closed (covered) from the Z2 side, the engaging pin 26 is engaged (inserted) across the pin hole 52c and the accommodating portion 21d in a state where the spring 25 attached to the accommodating portion 21d is compressed. At the same time, the head portion 26b is pressed against and accommodated in a flat portion of the main body portion 22a of the sub gear 22 (upper surface region 22e on the Z1 side facing the flange portion 52). The state shown in FIG. 4 where the engagement pin 26 engages with the pin hole 52c (flange portion 52) and the accommodating portion 21d (main gear 21) is an example of the “first engagement state” of the present invention. The position shown in FIG. 4 where the engaging pin 26 engages with the pin hole 52c and the accommodating portion 21d is an example of the “first engaging position” in the present invention.

  As a result, the flange portion 52 and the main gear 21 are connected to each other through the engagement pin 26 so that the driving force can be transmitted. Therefore, when the main motor 10 is rotated, the small gear 11a, the large gear 11b, the worm gear 12, the gear portion 21c of the main gear 21, the engagement pin 26 for power transmission, the flange portion 52, and the shaft portion 51 are arranged in this order. The driving force of the main motor 10 is transmitted to rotate the output shaft 50 (detent plate 60). The normal transmission path A of the main motor 10 shown in FIG. 4 is an example of the “driving force transmission path” in the present invention.

  Here, in the present embodiment, as shown in FIG. 1, in addition to the main motor 10, the actuator unit 1 includes a sub motor 30 for emergency operation that outputs a driving force smaller than the driving force of the main motor 10. I have. The sub motor 30 has a driving force capable of driving the shift switching mechanism 2 (the output shaft 50), like the main motor 10. The sub motor 30 is configured to rotate a worm gear 32 that is press-fitted and fixed to the rotary shaft 31. In this embodiment, the main motor 10 or a driving force transmission path from the main motor 10 to the output shaft 50 (shaft portion 51) (small gear 11a, large gear 11b, worm gear 12, main gear 21 (gear portion 21c), When an abnormality occurs in a series of normal transmission paths A) to the engagement pin 26 and the flange portion 52, the engagement state between the main motor 10 and the output shaft 50 (the transmission of the driving force shown in FIG. 4). Is enabled, and the engagement state in which the driving force of the sub motor 30 can be transmitted to the output shaft 50 between the sub motor 30 and the output shaft 50 (the emergency transmission path B shown in FIG. 7 is effective). It is configured to be switched to a state of In the following description, except for special points, the abnormality relating to the normal-time transmission path A from the main motor 10 or the main motor 10 to the output shaft 50 will be simply described as an abnormality relating to the main motor 10, and the description will be continued.

  Examples of the abnormality related to the main motor 10 include disconnection of the main motor 10 itself or disconnection on the wiring path from the ECU 120 to the main motor 10. Furthermore, the locked state associated with the breakage of the main motor 10 itself, or any part of the small gear 11a, the large gear 11b, the worm gear 12 and the main gear 21 that serve as a driving force transmission path even if the main motor 10 is normal. This includes the case where a foreign object or the like bites into the (meshing location) and the gear is locked or damaged. In the present embodiment, when the main motor 10 is driven based on a predetermined control signal M1, the detection result (rotation angle detection signal M2) of the rotation angle position of the output shaft 50 (detent plate 60) by the rotation angle sensor 3 is obtained. A case where the ECU 120 determines that the vehicle is not normal is recognized on the vehicle (control circuit unit) side as an abnormality related to the main motor 10.

  A configuration for realizing the switching operation of the drive source (actuator) from the main motor 10 to the sub motor 30 at the time of this abnormality will be described. As shown in FIGS. 3 and 4, the circular main body 22a of the sub gear 22 driven by the sub motor 30 is provided with a cylindrical housing portion 22d penetrating in the thickness direction. As shown in FIG. 3, the accommodating portion 22 d is formed at a position separated from the rotation axis C <b> 1 of the output shaft 50 by a radius R <b> 2. Here, the separation distance (radius R1) of the accommodating portion 21d and the pin hole 52c from the rotation shaft C1 is equal to the separation distance (radius R2) of the accommodation portion 22d from the rotation shaft C1 (R1 = R2). The accommodating portion 22d and the pin hole 52c (see FIG. 4) have the same inner diameter. The inner diameter of the accommodating portion 22d is preferably slightly larger than the inner diameter of the pin hole 52c. A magnet plate 27 that closes the housing portion 22d from the Z2 side is attached to the opposite side (lower surface side) of the main body portion 22a of the sub gear 22 from the Z2 side. The side is closed by a magnet plate 27. The accommodating portion 22d is an example of the “second engagement portion” and the “second engagement hole” in the present invention. The magnet plate 27 is an example of the “magnet member” in the present invention.

  As a result, the driving force transmission mechanism 20 is in a case where an abnormality related to the main motor 10 occurs based on the detection result (the rotation angle detection signal M2 (see FIG. 1)) of the rotation angle sensor 3 regarding the rotation angle of the output shaft 50. Then, after the operation state (the state in a plan view shown in FIG. 5) in which the sub gear 22 is rotated by the sub motor 30 based on a command from the ECU 120, as shown in FIG. 6, the large-diameter portion 52a (pin) The body portion 22a (accommodating portion 22d) of the sub gear 22 is rotated with respect to the hole 52c) and overlapped with the accommodating portion 22d, and the operating state is brought into a state where the accommodating portion 22d and the pin hole 52c are penetrated in the Z direction. Migrated. Then, in a state where the accommodating portion 22d and the pin hole 52c are penetrated in the Z direction, the engaging pin 26 (state of FIG. 4) arranged (accommodated) closer to the main gear 21 side is the urging force of the spring 25. As a result, the head 26b is moved into the accommodating portion 22d by sliding in the direction of the arrow Z2. Finally, as shown in FIG. 7, the engaging pin 26 has a magnetic plate 27 in which the seat portion 26 a completely comes out of the housing portion 21 d of the main gear 21 and the head portion 26 b closes the housing portion 22 d of the sub gear 22. It is moved to a position where it contacts (abuts) the surface (upper surface). Thus, the engagement pin 26 is configured to be engaged (inserted) across the pin hole 52c and the accommodating portion 22d. The state shown in FIG. 7 where the engaging pin 26 engages with the pin hole 52c (flange portion 52) and the accommodating portion 22d (sub gear 22) is an example of the “second engaging state” of the present invention. The position shown in FIG. 7 where the combined pin 26 engages with the pin hole 52c and the accommodating portion 22d is an example of the “second engagement position” in the present invention.

  In the present embodiment, when the operation of overlapping the accommodating portion 22d with respect to the pin hole 52c is performed, the sub motor 30 causes the sub gear 22 to uniquely move in one direction within a range of one rotation (about 360 degrees). It is comprised so that it may rotate. Thus, the housing portion 22d is reliably rotated to a position where it overlaps the housing portion 21d and the pin hole 52c until the sub gear 22 is rotated at least once. In addition, the engagement pin 26 disposed (accommodated) closer to the sub gear 22 side by moving from the first engagement position (see FIG. 4) to the second engagement position (see FIG. 7) It continues to be attracted by the magnetic force. Thereby, it is comprised so that the state (2nd engagement state) with which the engagement pin 26 is engaged over the pin hole 52c and the accommodating part 22d is maintained.

  As described above, when an abnormality relating to the main motor 10 occurs, the state in which the engagement pin 26 is engaged with the pin hole 52c and the accommodating portion 21d (the first engagement state) is changed to that of the normal sub motor 30. A state in which the housing portion 22d of the sub gear 22 is rotated to a position where it overlaps the housing portion 21d and the pin hole 52c by the driving force, and the engagement pin 26 is engaged with the pin hole 52c and the housing portion 22d (second engagement state). Can be switched to. As a result, after the flange portion 52 and the sub gear 22 are switched to the state where the flange portion 52 and the sub gear 22 are connected via the engagement pin 26 (second engagement state), the user operates the operation portion 110 such as a shift position switch (see FIG. 1). ), The driving force of the sub motor 30 is transmitted in the order of the worm gear 32, the gear portion 22c of the sub gear 22, the engagement pin 26, the flange portion 52, and the shaft portion 51. Only the transmission path B (see FIG. 7) is effective, and the output shaft 50 (detent plate 60) is rotated.

  Therefore, in this embodiment, when an abnormality relating to the main motor 10 occurs, the engagement state (the engagement pin 26 is in the state where the driving force between the flange portion 52 of the output shaft 50 and the main gear 21 can be transmitted). The first engagement state in which the pin hole 52c and the accommodating portion 21d are engaged is released, and the flange portion 52 of the output shaft 50 and the sub motor 30 and the sub gear 22 are engaged with each other (the engagement pin 26 is By switching to the second engagement state in which the pin hole 52c and the accommodating portion 22d are engaged, the driving force of the sub motor 30 is transmitted to the output shaft 50 via the sub gear 22.

  In the state where the main motor 10 side is normally driven, the housing portion 22d of the sub gear 22 rotates with respect to the housing portion 21d of the main gear 21 (the pin hole 52c of the flange portion 52) as shown in FIG. It is located on the opposite side about 180 degrees away around the dynamic axis C2. That is, the accommodating portion 22d and the accommodating portion 21d are separated from each other around the rotation axis C2 with a rotation angle larger than the rotation angle range (about 40 degrees) of the main gear 21 in a normal state. Therefore, even when the main gear 21 is rotated by the main motor 10 in the forward / reverse direction within a range of about 40 degrees in the normal state, the structural state in which the pin hole 52c and the accommodating portion 21d are overlapped by the engagement pin 26. Is not rotated to the accommodating portion 22d of the sub gear 22, and the engaging pin 26 is configured not to be moved to the accommodating portion 22d side by mistake.

  Moreover, in this embodiment, as shown in FIG. 6, the natural length L in the state where the spring 25 is not biased is smaller than the depth D of the accommodating portion 21d. Therefore, as shown in FIG. 7, in a state where the engagement pin 26 (seat portion 26 a) is completely removed from the housing portion 21 d of the main gear 21, the other end 25 b of the spring 25 is moved from the housing portion 21 d to the flange portion 52. It is configured to remain hidden in the accommodating portion 21d without jumping out. Accordingly, even if the sub-motor 30 rotates the sub gear 22 and the flange portion 52 (the output shaft 50) when an abnormality relating to the main motor 10 occurs, the pin hole 52c in which the other end 25b of the spring 25 is rotating. It is prevented that the drive of the output shaft 50 by the sub motor 30 is interrupted. The natural length L is an example of the “length when the biasing member is not biased” in the present invention.

  Thus, the actuator unit 1 switches the engagement position of the engagement pin 26 by rotating the sub gear 22 from the engagement state of only the main gear 21 side with the output shaft 50 (flange portion 52). A configuration for shifting to the engagement state only on the sub gear 22 side with respect to the (flange portion 52) is provided. Therefore, the normal transmission path A from the abnormal main motor 10 side to the output shaft 50 (shaft portion 51) is completely cut off, and the sub motor 30 is replaced without using the main motor 10. The emergency transmission path B to the output shaft 50 (shaft portion 51) is alternatively switched to a state in which it effectively functions.

  The detent plate 60 in the shift switching mechanism 2 is held by a detent spring 61 made of a leaf spring at a predetermined rotation angle position. Specifically, the detent spring 61 is configured to hold the detent plate 60 at rotational angle positions corresponding to the P position, the R position, the N position, and the D position.

  As shown in FIGS. 1 and 2, the detent plate 60 includes a P fitting portion 62a, an R fitting portion 62b, an N fitting portion 62c, and D corresponding to the P position, the R position, the N position, and the D position, respectively. It has a fitting part 62d. The P fitting portion 62a, the R fitting portion 62b, the N fitting portion 62c, and the D fitting portion 62d are formed in a concave notch shape.

  The detent spring 61 is selectively fitted into any one of the P fitting portion 62a, the R fitting portion 62b, the N fitting portion 62c, and the D fitting portion 62d of the detent plate 60, so that the P position, The detent plate 60 is configured to be held at a rotation angle position corresponding to the R position, the N position, or the D position. Specifically, the detent spring 61 has a roller portion 61 a that can slide along a cam surface 60 a provided with a plurality of fitting portions of the detent plate 60. Further, the detent spring 61 is supported in a cantilevered manner by a support portion (not shown) and presses the cam surface 60a of the detent plate 60 on the free end side. That is, the detent spring 61 is configured so that the roller portion 61a slides along the cam surface 60a of the detent plate 60 as the detent plate 60 rotates, and the roller portion 61a is fitted to the corresponding fitting portion. The detent plate 60 is held at a predetermined rotational angle position by a detent spring 61.

  As shown in FIGS. 1 and 2, the parking rod 70 and the manual valve rod 80 are fixedly connected to a position separated from the rotation axis C <b> 2 of the detent plate 60. Specifically, the parking rod 70 is a region between the P fitting portion 62a and the R fitting portion 62b, and a position closer to the rotation axis C2 than the P fitting portion 62a and the R fitting portion 62b. And is connected to the detent plate 60. As shown in FIG. 2, a cam portion 71 is provided in the vicinity of the other end of the parking rod 70 opposite to the one end connected to the detent plate 60. The cam portion 71 is in contact with the lock pole 92 while being biased toward the other end portion of the parking rod 70 by the coil spring 72. As the parking rod 70 moves, the contact position of the cam portion 71 with respect to the lock pole 92 changes, whereby the lock pole 92 is rotated to the locked position and the unlocked position about the rotation axis C2. Thereby, the engagement state (locking state, non-locking state) of the parking gear 91 and the lock pole 92 is switched. The manual valve rod 80 is connected to the distal end portion 63a of the arm portion 63 of the detent plate 60 that rotates about the rotation axis C2.

  Next, a processing flow of the ECU 120 in the shift device 100 according to the present embodiment will be described with reference to FIGS. 1 and 3 to 8. In the following, in a situation where the shift device 100 is set to the “normal operation mode” in which the actuator unit 1 (see FIG. 1) is driven using the main motor 10 that is normally used, there is some An operation of the actuator unit 1 when the shift device 100 is switched to the “emergency operation mode” when an abnormality (failure) occurs will be described.

  As shown in FIG. 8, first, in step S1, ECU 120 (see FIG. 1) determines whether or not main motor 10 (see FIG. 1) is disconnected at a predetermined control timing. If it is determined in step S1 that the main motor 10 is not disconnected (the main motor 10 is energized and can be driven normally), in step S2, control for rotating the main motor 10 is performed. That is, a predetermined control amount (voltage pulse or the like) is output from the control circuit unit (not shown) to the main motor 10 based on a command from the ECU 120 to rotate the main motor 10. Further, the driving force transmission mechanism 20 (see FIG. 1) is driven with the rotation of the main motor 10 to rotate the output shaft 50 (see FIG. 1). Accordingly, a rotation angle detection signal M2 (see FIG. 1) is output from the rotation angle sensor 3 (see FIG. 1) to a control circuit unit (not shown).

  In step S3, whether or not the output value of the rotation angle of the output shaft 50 corresponding to the control amount input to the main motor 10 is obtained as a value within the assumed range (the rotation of the output shaft 50 within the assumed range). ECU 120 determines whether or not the rotation angle detection signal M2 corresponding to is detected on the ECU 120 side. In step S3, the output value of the rotation angle of the output shaft 50 corresponding to the control amount input to the main motor 10 is obtained as a value within the assumed range (the rotation angle corresponding to the rotation of the output shaft 50 within the assumed range). If it is determined that the detection signal M2 has been detected on the ECU 120 side, the control flow ends. That is, in this case, no disconnection has occurred in the main motor 10, and furthermore, the normal transmission path A (the small gear 11a, the large gear 11b, and the like) from the main motor 10 to the output shaft 50 (shaft portion 51). No abnormality has occurred in the worm gear 12, the main gear 21 (gear portion 21c), the engagement pin 26, and the series of driving force transmission paths to the flange portion 52 (see FIG. 3). In addition, when this control flow is complete | finished by step S3, after passing predetermined time (control period), this control flow shown in FIG. 8 is performed again from step S1.

  In step S3, the output value of the rotation angle of the output shaft 50 corresponding to the control amount (voltage pulse or the like) input to the main motor 10 is not obtained as a value within the assumed range (the output shaft 50 within the assumed range). If the ECU 120 determines that the rotation angle detection signal M2 corresponding to the rotation of the ECU 120 is not detected on the ECU 120 side), in step S4, the user is notified that an abnormality (failure) has occurred in the actuator unit 1 based on the command of the ECU 120. “Failure message” to be notified. For example, the failure message may blink an abnormality lamp including a mark indicating that an abnormality (failure) has occurred in the actuator unit 1 with respect to an instrument panel (instrument panel) in front of a driver's seat (not shown) in the vehicle. .

  Here, in the present embodiment, control for rotating the sub motor 30 is performed in step S5. That is, a predetermined control amount (voltage pulse or the like) is output to the sub motor 30 from a control circuit unit (not shown) based on a command from the ECU 120, and the sub motor 30 is rotated. That is, the accommodating portion 21d of the main gear 21 and the pin hole 52c of the output shaft 50 overlap, and the engaging pin 26 is inserted (engaged) into the accommodating portion 21d and the pin hole 52c, and the accommodating portion 21d and the pin hole 52c are inserted. And the housing 22d of the sub gear 22 do not overlap (see FIGS. 3 and 4), while the sub gear 22 is being rotated by the sub motor 30 based on a command from the ECU 120 (in plan view shown in FIG. 5). 6), the accommodating portion 22d of the main body portion 22a of the sub gear 22 is rotated with respect to the pin hole 52c of the large diameter portion 52a of the flange portion 52 and overlapped with the large diameter portion 52a. The operating state is shifted to a state in which the accommodating portion 22d and the pin hole 52c are penetrated in the Z direction. The sub gear 22 is uniquely rotated in one direction within a range of one rotation (about 360 degrees). Further, the accommodating portion 22d of the sub gear 22 is overlapped with the pin hole 52c of the flange portion 52 while the sub gear 22 is rotated once.

  Then, the engaging pin 26 (the state shown in FIG. 4) disposed (accommodated) closer to the main gear 21 side with the accommodating portion 22d and the pin hole 52c penetrating in the Z direction is caused by the urging force of the spring 25. The head 26b is slid in the direction of the arrow Z2 to move the head 26b into the accommodating portion 22d. Finally, as shown in FIG. 7, the engaging pin 26 is completely removed from the accommodating portion 21d. 26b is moved to a position where it abuts against the magnet plate 27 that closes the accommodating portion 22d. As a result, the flange portion 52 and the sub gear 22 are switched to the connected state via the engagement pin 26, and the driving force of the sub motor 30 is transmitted in the order of the sub gear 22 and the flange portion 52 to the output shaft 50 (detent plate 60). Is switched to the emergency transmission path B to be rotated. Then, the driving force transmission mechanism 20 is driven with the further rotation of the sub motor 30, and the output shaft 50 is actually rotated. Accordingly, a rotation angle detection signal M2 is output from the rotation angle sensor 3 to a control circuit unit (not shown).

  In step S6, whether or not the output value of the rotation angle of the output shaft 50 corresponding to the control amount input to the sub motor 30 is obtained as a value within the assumed range (in the rotation of the output shaft 50 within the assumed range). Whether or not the corresponding rotation angle detection signal M2 is detected on the ECU 120 side) is determined by the ECU 120, and the output value of the rotation angle of the output shaft 50 corresponding to the control amount input to the sub motor 30 is within the assumed range. This determination is repeated until a value is obtained.

  When it is determined in step S6 that the output value of the rotation angle of the output shaft 50 corresponding to the control amount input to the sub motor 30 has been obtained as a value within the assumed range, in step S7, the “normal operation up to that point” The setting mode is switched from “mode” to “emergency operation mode” in which the actuator unit 1 (see FIG. 1) is driven by using the sub motor 30 that is used for an abnormality (at the time of emergency operation) based on a command from the ECU 120. . Thereby, an emergency transmission path B (a series of driving force transmission paths from the worm gear 32, the gear part 22c of the sub gear 22, the engagement pin 26, and the flange part 52) from the sub motor 30 to the output shaft 50 (shaft part 51). It becomes an effective driving force transmission path in terms of control. And this control flow is complete | finished. Further, after the setting is switched from the “normal operation mode” to the “emergency operation mode” based on a command from the ECU 120, the output shaft 50 (detent plate 60) is rotated using the sub motor 30.

  After the “emergency operation mode” is set, when the user performs a shift switching operation via the operation unit 110 (see FIG. 1) such as a shift position switch, the main motor is controlled based on a command from the ECU 120. No. 10 is driven (energized) and only the sub motor 30 is driven to perform electrical shift change control (shift-by-wire). Further, since the user recognizes the failure message (abnormal lamp blinking display) issued in step S4, the user contacts the manufacturer (after-service factory) or the like to the actuator unit 1 (see FIG. 1). Take appropriate action. The operation contents when an abnormality occurs relating to the shift device 100 and the main motor 10 in the present embodiment are configured as described above.

  In the present embodiment, the following effects can be obtained.

  That is, in this embodiment, as described above, the driving force transmission path (small gear 11a, large gear 11b, worm gear 12, main gear 21 (main gear 10) from the main motor 10 or the main motor 10 to the output shaft 50 (shaft portion 51). When an abnormality occurs in a series of normal transmission paths A) to the gear portion 21c), the engagement pin 26, and the flange portion 52, the engagement state (drive force transmission) between the main motor 10 and the output shaft 50 occurs. In which the sub motor 30 and the output shaft 50 are switched to an engaged state in which the driving force of the sub motor 30 can be transmitted to the output shaft 50. The normal transmission path A from the motor 10 side to the output shaft 50 (shaft portion 51) is completely cut off, and the sub motor 30 can be replaced without using the main motor 10. Emergency when transmitting path B to the output shaft 50 (the shaft portion 51) can be switched to a state of functioning effectively. As a result, an abnormal state around the main motor 10 (disconnection or lock state of the main motor 10 itself or presence / absence of an inoperable event (such as a lock state) in the normal transmission path A from the main motor 10 to the output shaft 50). Regardless, the output shaft 50 can be normally rotated by driving the sub motor 30 in a state where the emergency transmission path B of the driving force transmission mechanism 20 is completely switched to the sub motor 30 side. Thus, an appropriate shift operation can be performed by the sub motor 30 as a substitute when an abnormality occurs on the main motor 10 side.

  In the present embodiment, the main gear 21 that is interposed between the output shaft 50 and the main motor 10 and transmits the driving force of the main motor 10 to the output shaft 50 (shaft portion 51), the output shaft 50, and the sub motor 30. And a sub gear 22 that transmits the driving force of the sub motor 30 to the output shaft 50. When an abnormality occurs in the normal transmission path A from the main motor 10 or the main motor 10 to the output shaft 50, the engagement between the output shaft 50 (shaft portion 51) and the main gear 21 is released. By switching so that the output shaft 50 (shaft portion 51) and the sub motor 30 and the sub gear 22 are engaged, the driving force of the sub motor 30 is transmitted to the output shaft 50 (shaft portion 51) via the sub gear 22. Configure. As a result, the normal-time transmission path A from the main motor 10 side that has become abnormal by releasing the engagement between the output shaft 50 and the main gear 21 to the output shaft 50 can be easily interrupted. In addition, when the output shaft 50 and the sub motor 30 and the sub gear 22 are engaged, the emergency transmission path B from the sub motor 30 serving as an alternative to the output shaft 50 effectively functions without using the main motor 10. Can be easily switched to. As a result, the output shaft 50 (detent plate 60) can be reliably and normally rotated by driving the normal sub motor 30 regardless of the abnormal state around the main motor 10.

  In the present embodiment, the “first engagement state” in which the driving force of the main motor 10 is engaged with the output shaft 50 and the main gear 21 so that the driving force of the main motor 10 can be transmitted to the output shaft 50 and the driving force of the sub motor 30 are set. An engagement pin 26 that can switch between a “second engagement state” that engages the output shaft 50 and the sub gear 22 so as to be able to transmit to the output shaft 50 is further provided. The engagement pin 26 is configured to be switched from the first engagement state to the second engagement state when an abnormality occurs in the normal transmission path A from the main motor 10 or the main motor 10 to the output shaft 50. To do. As a result, based on the switching operation from the first engagement state (the state in which the normal transmission path A functions) by the engagement pin 26 to the second engagement state (the state in which the emergency transmission path B functions), the main The engaged state between the motor 10 and the output shaft 50 is reliably released, and the driving force of the sub motor 30 can be transmitted to the output shaft 50 (detent plate 60) between the sub motor 30 and the output shaft 50. It is possible to reliably shift to the engaged state.

  In the present embodiment, the main gear 21 includes an accommodating portion 21d with which the engaging pin 26 is engaged, the sub gear 22 includes an accommodating portion 22d with which the engaging pin 26 is engaged, and the output shaft 50 is accommodated. The pin hole 52c which is arrange | positioned between the part 21d and the accommodating part 22d, and the engagement pin 26 engages is included. When the abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the engagement pin 26 is engaged with the housing portion 21d and the pin hole 52c. The engagement pin 26 is configured to switch to the “second engagement state” in which the engagement pin 26 engages with the housing portion 22d and the pin hole 52c. As a result, the engagement pin 26 engages with the accommodation portion 22d and the pin hole 52c from the first engagement state where the engagement pin 26 engages with the accommodation portion 21d and the pin hole 52c (a state in which the normal transmission path A functions). By switching to the combined state (the state in which the emergency transmission path B functions), the engagement state between the main motor 10 and the output shaft 50 is surely released, and at the same time, the sub motor 30 and the output shaft 50 Can smoothly shift to an engaged state in which the driving force of the sub motor 30 can be transmitted to the output shaft 50 (detent plate 60).

  In the present embodiment, the main gear 21 and the sub gear 22 are rotatably attached to the output shaft 50. In the first engagement state (the state in which the normal transmission path A functions), the main gear 21 The accommodating portion 21d and the pin hole 52c of the output shaft 50 are arranged so as to overlap each other, and the accommodating portion 21d and the pin hole 52c and the accommodating portion 22d of the sub gear 22 are not overlapped. When an abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the housing portion 22d is rotated to a position where it overlaps the housing portion 21d and the pin hole 52c. The first pin 26 is slid and moved from the first engagement position engaging the receiving portion 21d and the pin hole 52c to the second engagement position engaging the receiving portion 22d and the pin hole 52c. It is configured to be switched from the state to the second engagement state (a state in which the emergency transmission path B functions). Thus, when an abnormality occurs in the normal transmission path A from the main motor 10 or the main motor 10 to the output shaft 50 (shaft portion 51), the housing portion 22d is rotated to a position where it overlaps the housing portion 21d and the pin hole 52c. From the first engagement state in which the engaging pin 26 engages with the accommodating portion 21d and the pin hole 52c at the first engaging position by the moved operation, the engaging pin 26 moves into the accommodating portion 22d and the pin hole 52c. It is possible to easily switch to the second engagement state where the two engagement positions are engaged.

  Further, in the present embodiment, when an abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the accommodating portion 22d is accommodated in the accommodating portion 21d and the pin hole 52c by the driving force of the sub motor 30. And the engagement pin 26 is moved from the first engagement position to the second engagement position, so that the first engagement state (the state in which the normal transmission path A functions) is moved. It is configured to be switched to the second engagement state (a state in which the emergency transmission path B functions). Accordingly, the housing portion 22d can be easily rotated to a position overlapping the housing portion 21d and the pin hole 52c by effectively using the driving force of the sub motor 30. Therefore, it is possible to easily switch from the first engagement state where the engagement pin 26 engages at the first engagement position to the second engagement state where the engagement pin 26 engages at the second engagement position.

  In this embodiment, when an abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the sub gear 22 is rotated within a range of 360 degrees by the driving force of the sub motor 30. Thus, the housing portion 22d is configured to be rotated to a position (see FIG. 6) that overlaps the housing portion 21d and the pin hole 52c. Accordingly, the housing portion 22d can be reliably rotated to a position overlapping the housing portion 21d and the pin hole 52c until the sub gear 22 is rotated once, so that the engagement pin 26 is moved from the first engagement position. It can be reliably moved to the second engagement position.

  In the present embodiment, the spring 25 for urging the engaging pin 26 toward the housing portion 22d is further provided, and when the abnormality occurs in the normal transmission path A from the main motor 10 or the main motor 10 to the output shaft 50. In addition, the engaging pin 26 is moved from the first engaging position to the second engaging position by the urging force of the spring 25 in a state where the receiving part 22d is rotated to a position overlapping the receiving part 21d and the pin hole 52c. Thus, the first engagement state is switched to the second engagement state. Thereby, the engagement pin 26 is moved from the first engagement position side (the state where it is engaged with the accommodation portion 21d and the pin hole 52c) using the biasing force of the spring 25 to the second engagement position side (the accommodation portion 22d and the pin). It can be easily moved to the state engaged with the hole 52c. That is, unlike the case where a dedicated actuator (electric motor) for moving the engagement pin 26 is further provided in the actuator unit 1, the engagement pin is utilized using the biasing force of the spring 25 without providing such an actuator. It is possible to suppress the configuration of the shift device 100 from being complicated by the amount that can be moved. Further, since it is not necessary to provide a dedicated actuator (motor) for moving the engagement pin 26, it is possible to save power in the shift device 100.

  In the present embodiment, the accommodating portion 21d of the main gear 21 is engaged so that the engaging pin 26 is movably accommodated on the accommodating portion 22d side by the other end 25b of the spring 25 having one end 25a attached to the bottom portion 21e. The natural length L in the state where the spring 25 is not biased is smaller than the depth D of the accommodating portion 21d. Thus, when the engagement pin 26 is moved from the first engagement position side to the second engagement position side using the biasing force of the spring 25, the one end 25a is fixed to the bottom portion 21e of the accommodating portion 21d. Since the natural length L of the spring 25 is shorter than the depth D of the housing portion 21d (L <D), the other end 25b side of the spring 25 is disposed between the housing portion 21d and the housing portions 21d and 22d. It is possible to prevent the pin hole 52c (flange 52) from protruding. Therefore, the first engagement state in which the engagement pin 26 engages with the pin hole 52c and the accommodating portion 21d is released, the engagement pin 26 is switched to the second engagement state, and the driving force of the sub motor 30 causes the sub gear 22 to move. In the case of being transmitted to the output shaft 50 (shaft portion 51), the other end 25 b side of the spring 25 is caught in the rotating pin hole 52 c (flange portion 52), and the output shaft 50 (shaft) by the sub motor 30. It is possible to reliably prevent troubles in driving of the portion 51).

  In the present embodiment, the engagement pin 26 is made of a magnetic material, and a magnet plate that attracts the engagement pin 26 with a magnetic force in the second engagement state (a state where the engagement pin 26 is engaged with the accommodating portion 22d and the pin hole 52c). 27 is further provided. And when abnormality occurs in the normal time transmission path A from the main motor 10 or the main motor 10 to the output shaft 50, the housing portion 22d is rotated to a position overlapping the housing portion 21d and the pin hole 52c. The magnet plate 27 is configured to maintain the state switched from the first engagement state to the second engagement state by the magnetic force of the magnet plate 27. Thereby, the engagement pin 26 is moved to the second engagement position, and the second engagement state in which the engagement pin 26 engages with the pin hole 52c and the accommodating portion 22d is maintained using the attractive force of the magnet plate 27. Therefore, even when unexpected vibration is applied to the actuator unit 1, it is possible to effectively suppress the release of the second engagement state due to the vibration. Therefore, the output shaft 50 (shaft portion 51) can be reliably rotated by the sub motor 30.

  In the present embodiment, the accommodating portion 21d, the accommodating portion 22d, and the pin hole 52c are each an engagement hole, and the engaging pin 26 is engageable with the accommodating portion 21d, the accommodating portion 22d, and the pin hole 52c. It is a pin member. Then, when an abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the engagement pin 26 is engaged from the first engagement state where the engagement pin 26 is engaged with the accommodating portion 21d and the pin hole 52c. The engagement pin 26 is configured to be switched to the second engagement state where the engagement pin 26 engages with the accommodating portion 22d and the pin hole 52c. Thereby, the engaging pin 26 is engaged with the accommodating portion 22d and the pin hole 52c from the state in which the engaging pin 26 is engaged with the accommodating portion 21d and the pin hole 52c to establish the first engaging state. The switching operation to the state in which the second engagement state is established can be easily performed. Therefore, it is possible to quickly switch to an appropriate shift operation by the sub motor 30 as an alternative when an abnormality occurs on the main motor 10 side.

  In the present embodiment, the main motor 10 is a main actuator having a predetermined driving force, and the sub motor 30 is a sub actuator having a driving force smaller than the predetermined driving force of the main motor 10. Accordingly, the sub motor 30 having a smaller driving force than the main motor 10 as the main actuator can be used to perform an appropriate shift operation by the sub motor 30 when an abnormality occurs on the main motor 10 side. Since 30 can be mounted on the shift device 100, the entire shift device 100 can be prevented from being enlarged even if two actuators are mounted. Further, power consumption of the shift device 100 can be reduced by using the miniaturized sub motor 30.

  In the present embodiment, the main gear 21 is configured to be swung by the main motor 10 with a rotation angle range of about 40 degrees, and the output shaft 50 (shaft) from the main motor 10 or the main motor 10. When an abnormality occurs in the driving force transmission path to the part 51), the sub-motor 30 rotates the sub gear 22 with a rotation angle (at least about 180 degrees) larger than the rotation angle range (about 40 degrees). By being moved, the engagement between the output shaft 50 (shaft portion 51) and the main gear 21 is released, and the output shaft 50 (shaft portion 51), the sub motor 30 and the sub gear 22 are engaged. It is comprised so that it can switch. With this configuration, the main gear 21 can be rotated while the main gear 21 is being swung within the rotation angle range of about 40 degrees by the main motor 10 without causing any abnormality on the main motor 10 side. It is possible to easily avoid the output shaft 50 (shaft portion 51) and the sub motor 30 and the sub gear 22 from being switched so as to be erroneously engaged due to the above.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the main motor 10 or the driving force transmission path from the main motor 10 to the output shaft 50 (from the small gear 11a, the large gear 11b, the worm gear 12, the main gear 21, the engagement pin 26, and the flange portion 52). Although an example in which the engagement between the output shaft 50 (shaft portion 51) and the main gear 21 is released when an abnormality occurs in the series of normal transmission paths A), the present invention is not limited thereto. Absent. For example, when an abnormality relating to the main motor 10 occurs, the engagement between the main motor 10 and the main gear 21 is released, and the output shaft 50, the sub motor 30 and the sub gear 22 are engaged, and the sub motor is engaged. The driving force of 30 may be transmitted to the output shaft 50. By configuring as in this modification, the transmission state of the driving force from the main motor 10 side to the output shaft 50 (the state in which the normal transmission path A functions) can be easily released.

  In the above-described embodiment, the driving force transmission mechanism 20 is configured so that the main gear 21 rotates forward or backward clockwise or counterclockwise with a rotation angle range of about 40 degrees in the normal operation mode. Although an example has been shown, the present invention is not limited to this. That is, if the sub gear 22 is rotated with a rotation angle larger than the rotation angle range of the main gear 21 and can be switched from the normal transmission path A to the emergency transmission path B, it is about 40 degrees. The driving force transmission mechanism 20 may be configured such that the main gear 21 is swung (forward / reverse rotation) with a rotation angle range other than.

  Further, in the above embodiment, when an abnormality occurs in the normal motor 10 or the normal transmission path A from the main motor 10 to the output shaft 50, the sub gear 22 is rotated at least 360 degrees (one rotation) by the driving force of the sub motor 30. Although the example rotated within the range was shown, the present invention is not limited to this. For example, the sub gear 22 may be rotated within a range of up to two rotations so that the accommodating portion 22d is rotated to a position where the accommodating portion 22d overlaps the accommodating portion 21d and the pin hole 52c (see FIG. 6). Even if the engaging pin 26 is not properly slid from the accommodating portion 21d side to the accommodating portion 22d side by the rotation of the sub gear 22 within 360 degrees by configuring as in this modified example, another 1 The sub gear 22 can be rotated by the amount of rotation, and the sliding movement of the engagement pin 26 can be tried again. Thereby, the engagement pin 26 can be reliably moved from the first engagement position to the second engagement position.

  In the above embodiment, the ECU 120 is configured to determine whether there is an abnormality related to the main motor 10 based on the detection result (rotation angle detection signal M2) of the rotation angle position of the output shaft 50 by the rotation angle sensor 3. Although an example has been shown, the present invention is not limited to this. For example, the ECU 120 may be configured to determine whether there is an abnormality related to the main motor 10 based on a result of detecting a current value for driving the main motor 10 (overcurrent detection result).

  In the above embodiment, the example in which the magnet plate 27 is attached to the lower surface (Z2 side) of the main body portion 22a so as to completely close the housing portion 22d of the sub gear 22 from the Z2 side has been described. However, the present invention is not limited to this. I can't. A through hole that is slightly smaller than the outer diameter of the engagement pin 26 may be provided in a portion (the portion that attracts the engagement pin 26) that closes the housing portion 22 d of the magnet plate 27. As a result, even if foreign matter enters the housing portion 22d of the sub gear 22 exposed in the normal state, the foreign matter is removed through the through hole of the magnet plate 27. It can be engaged with the part 22d side.

  In the above-described embodiment, an example in which the engagement pin 26 is biased toward the sub gear 22 using the coiled spring 25 has been described, but the present invention is not limited to this. For example, a plate spring (biasing member) bent into a “<” shape so as to be elastically deformable may be attached in the accommodating portion 21 d to urge the engaging pin 26 toward the sub gear 22. .

  In the above-described embodiment, the example in which the main gear 21 is disposed on the upper side (Z1 side) with respect to the flange portion 52 and the sub gear 22 is disposed on the lower side (Z2 side) has been described. I can't. The arrangement relationship of the main gear 21 and the sub gear 22 with respect to the flange portion 52 may be opposite to the above. In this case, when the engagement pin 26 is moved upward from the first engagement state to the second engagement state, in the second engagement state, the engagement pin 26 is accommodated by the attractive force of the magnet plate 27. 22d (second engaging portion) is suspended, so that the magnetic force of the magnet plate 27 is made stronger, or in addition, the seat 26a side of the engaging pin 26 is connected to the pin hole 52c ( A retaining portion or the like that does not fall off from the third engaging portion) to the lower accommodating portion 21d (first engaging portion) may be provided in the second engaging portion and / or the third engaging portion.

  Moreover, in the said embodiment, it intervenes between the main gear 21 (accommodating part 21d) and the flange part 52 (pin hole 52c) or between the sub gear 22 (accommodating part 22d) and the flange part 52 (pin hole 52c) ( Although an example in which one engagement pin 26 to be engaged) is provided is shown, the present invention is not limited to this. For example, two engagement pins 26 are provided at two locations between the main gear 21 and the flange portion 52 or between the sub gear 22 and the flange portion 52 to change from the “first engagement state” to the “second relationship”. You may comprise so that switching to a "combined state" may be performed.

  Moreover, in the said embodiment, although the example which applies the shift apparatus of this invention to the shift apparatus for motor vehicles was shown, this invention is not limited to this. You may apply the shift apparatus of this invention to shift apparatuses other than for motor vehicles, such as an aircraft and a ship, for example.

1 Actuator unit 2 Shift switching mechanism 10 Main motor (first actuator, main actuator)
11a small gear 11b large gear 12 worm gear 20 driving force transmission mechanism 21 main gear (first driving force transmission member)
21d accommodating portion (first engagement portion, first engagement hole)
21e bottom 22 sub gear (second driving force transmission member)
22d accommodating portion (second engagement portion, second engagement hole)
25 Spring (biasing member)
25a One end 25b The other end 26 Engagement pin (engagement member)
27 Magnet (Magnet member)
30 Sub motor (second actuator, sub actuator)
50 Output shaft (shift switching member)
51 Shaft part 52 Flange part 52c Pin hole (3rd engagement part, 3rd engagement hole)
60 Detent plate (shift switching member)
100 shift device

Claims (12)

A shift device mounted on a vehicle,
A shift switching member movable to a plurality of positions corresponding to each of the plurality of shift positions;
A first actuator and a second actuator for driving the shift switching member;
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the engagement state between the first actuator and the shift switching member is released, A shift device configured to switch between the second actuator and the shift switching member to an engaged state in which the driving force of the second actuator can be transmitted to the shift switching member. A first driving force transmission member interposed between the shift switching member and the first actuator and transmitting the driving force of the first actuator to the shift switching member;
A second driving force transmitting member interposed between the shift switching member and the second actuator and transmitting the driving force of the second actuator to the shift switching member;
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, at least one of the shift switching member and the first actuator and the first driving force transmission member And the shift switching member, the second actuator, and the second driving force transmission member are switched so that the driving force of the second actuator is increased. The shift device according to claim 1, wherein the shift device is configured to be transmitted to the shift switching member via a two driving force transmission member. A first engagement state in which the shift switching member and the first driving force transmission member are engaged so that the driving force of the first actuator can be transmitted to the shift switching member, and the driving force of the second actuator. An engagement member capable of switching between a second engagement state engaged with the shift switching member and the second driving force transmission member so as to be able to transmit to the shift switching member;
The engagement member is switched from the first engagement state to the second engagement state when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member. The shift device according to claim 2, configured as described above. The first driving force transmission member includes a first engagement portion with which the engagement member engages,
The second driving force transmission member includes a second engagement portion with which the engagement member engages,
The shift switching member includes a third engagement portion that is disposed between the first engagement portion and the second engagement portion and engages with the engagement member;
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the engagement member engages with the first engagement portion and the third engagement portion. It is comprised so that the said engagement member may be switched to the said 2nd engagement state engaged with the said 2nd engagement part and the said 3rd engagement part from the said 1st engagement state. The shifting device described. The first driving force transmission member and the second driving force transmission member are rotatably attached to the shift switching member,
In the first engagement state, the first engagement portion of the first driving force transmission member overlaps the third engagement portion of the shift switching member, and the first engagement portion and the third engagement portion are overlapped. The engaging portion and the second driving force transmitting member are arranged so as not to overlap each other.
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion overlaps the first engagement portion and the third engagement portion. The second engagement portion and the third engagement portion are rotated from the first engagement position where the engagement member is engaged with the first engagement portion and the third engagement portion. 5. The shift device according to claim 4, wherein the shift device is configured to be switched from the first engagement state to the second engagement state by being moved to a second engagement position that engages.   When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engaging portion is driven into the first engaging portion and the driving force by the second actuator. The first engagement state is moved to the second engagement position from the first engagement position by rotating the engagement member to a position overlapping the third engagement portion, and moving the engagement member from the first engagement position to the second engagement position. The shift device according to claim 5, wherein the shift device is configured to be switched to a two-engagement state.   Angle range in which the second driving force transmission member is rotated once by the driving force of the second actuator when an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member. The shift according to claim 6, wherein the second engagement portion is rotated to a position overlapping with the first engagement portion and the third engagement portion by being rotated in a position. apparatus. A biasing member that biases the engagement member toward the second engagement portion;
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion overlaps the first engagement portion and the third engagement portion. When the engagement member is moved from the first engagement position to the second engagement position by the urging force of the urging member in the state of being rotated to the position, The shift device according to claim 5, wherein the shift device is configured to be switched to a second engagement state. The first engagement portion of the first driving force transmission member accommodates the engagement member movably toward the second engagement portion by the other end of the biasing member having one end attached to the bottom. Including a first engagement hole;
The shift device according to claim 8, wherein a length of the biasing member in a state where the biasing member is not biased is smaller than a depth of the first engagement hole. The engaging member is made of a magnetic material,
A magnetic member that attracts the engaging member by magnetic force in the second engaged state;
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the second engagement portion overlaps the first engagement portion and the third engagement portion. The state in which the state switched from the first engagement state to the second engagement state is maintained by the magnetic force of the magnet member while being rotated to a position. The shift device according to any one of the above. The first engagement portion, the second engagement portion, and the third engagement portion include a first engagement hole, a second engagement hole, and a third engagement hole, respectively.
The engagement member includes an engagement pin engageable with the first engagement hole, the second engagement hole, and the third engagement hole,
When an abnormality occurs in the driving force transmission path from the first actuator or the first actuator to the shift switching member, the engagement pin engages with the first engagement hole and the third engagement hole. It is comprised so that the said engagement pin may be switched from the 1st engagement state to the said 2nd engagement state engaged with the said 2nd engagement hole and the said 3rd engagement hole. The shift device according to any one of the above. The first actuator is a main actuator having a predetermined driving force,
The shift device according to any one of claims 1 to 11, wherein the second actuator is a sub-actuator having a driving force smaller than the predetermined driving force of the first actuator.

Images