JP6107364B2 - Shift device - Google Patents

Description

  The present invention relates to a shift device.

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

  In Patent Document 1, a rotatable positioning plate (positioning member), a lock pole that is moved to a locked position and an unlocked position according to a rotational angle position of the positioning plate, and a lock pole that can be engaged. A parking lock device (shift device) including a parking gear is disclosed. This parking lock device drives a motor (drive source) by an electrical control signal based on a user's shift operation, and uses a driving force of the motor to rotate a positioning plate corresponding to a locked position and an unlocked position. It is configured to rotate to a position. Thus, the engagement state between the lock pole and the parking gear is switched to switch between the parking state and the non-parking state.

JP 2011-143893 A

  However, in the parking lock device (shift device) of Patent Document 1, the positioning plate (positioning member) can be rotated only to two rotation angle positions corresponding to the lock position and the unlock position, It can only deal with two shift positions: a parking state (parking position) and a non-parking state (non-parking position).

  On the other hand, in a general automatic transmission (AT) system, three or more shift positions such as a parking position, a back position, a neutral position, and a drive position are set, and only two shift positions can be supported. The configuration of the parking lock device (shift device) of Patent Document 1 cannot cope with the general AT system in which three or more shift positions are set.

  The present invention has been made to solve the above problems, and one object of the present invention is to cope with three or more shift positions by rotating a positioning member using a driving source. It is to provide a possible shift device.

  In order to achieve the above object, the shift device according to one aspect of the present invention is rotatable to a plurality of rotation angle positions corresponding to at least the first shift position, the second shift position, and the third shift position, respectively. Including a positioning member, a driving side rotating part provided on the driving source side, and a driven side rotating part provided on the positioning member side and rotated in accordance with the rotation of the driving side rotating part. A rotation transmission mechanism that transmits rotational power from the source side to rotate the positioning member, and the drive side rotation unit is a plurality of drive side cams that move as the drive side rotation unit rotates. The driven-side rotating portion has a plurality of driven-side cam portions that can be respectively engaged with the plurality of driving-side cam portions, and the rotation transmission mechanism is one of the plurality of driving-side cam portions. In a state in which the driving cam portion is engaged with one driven cam portion of the plurality of driven cam portions. By moving, the driven side rotation portion is rotated to rotate the positioning member from the first shift position to the rotation angle position corresponding to the second shift position, and the other of the plurality of drive side cam portions. The drive-side cam portion moves in a state of being engaged with the other driven-side cam portions of the plurality of driven-side cam portions, thereby rotating the driven-side rotating portion to move the positioning member from the second shift position. It is comprised so that it may rotate to the rotation angle position corresponding to a 3rd shift position.

  In the shift device according to one aspect of the present invention, as described above, the rotation transmission mechanism that transmits the rotational force from the drive source side and rotates the positioning member is configured to drive one of the plurality of drive side cam portions. The side cam portion moves in a state of being engaged with one of the plurality of driven side cam portions, thereby rotating the driven side rotating portion to move the positioning member from the first shift position to the second position. While rotating to the rotation angle position corresponding to the shift position, the other driving side cam portion of the plurality of driving side cam portions is engaged with the other driven side cam portion of the plurality of driven side cam portions. By rotating in the state, the driven side rotation part is rotated to rotate the positioning member from the second shift position to the rotation angle position corresponding to the third shift position, thereby transmitting the rotation. With the mechanism, the rotational power is transmitted from the drive source side to reduce Since the positioning member can be rotated to at least three different rotation angle positions corresponding to the first shift position, the second shift position, and the third shift position, the positioning member is rotated using the drive source. Thus, it is possible to correspond to at least three shift positions. Therefore, if two or more driving cam portions and two driven cam portions are provided, the positioning member can be rotated to three or more different rotation angle positions corresponding to three or more shift positions. By rotating the positioning member using the driving source, it is possible to cope with three or more shift positions.

  In the shift device according to the one aspect described above, preferably, the plurality of drive side cam portions of the drive side rotation portion are arranged at different step positions in the direction in which the rotation axis of the drive side rotation portion extends, The plurality of driven-side cam portions of the driven-side rotating portion are arranged at different step positions in the direction in which the rotating shaft of the driven-side rotating portion extends. If comprised in this way, since a several drive side cam part can be engaged with the corresponding driven side cam part in a mutually different step position, the drive side cam part and driven side cam part which are not mutually corresponded Can be easily prevented from interfering (contacting).

  In the shift device according to the one aspect described above, preferably, the plurality of driving side cam portions are a plurality of columnar cam pole portions, and the plurality of driven side cam portions are a plurality of cam lever portions that engage with the corresponding cam pole portions. is there. If comprised in this way, the cam pole part and cam lever part of a simple structure can engage easily the cam pole part and cam lever part which mutually correspond, and can rotate a positioning member to a predetermined rotation angle position. .

  The shift device according to the above aspect, preferably further includes a holding member that holds the positioning member at a plurality of rotation angle positions corresponding to at least the first shift position, the second shift position, and the third shift position, respectively. The positioning member has at least a first fitting portion, a second fitting portion, and a third fitting portion corresponding to each of the first shift position, the second shift position, and the third shift position. Rotation corresponding to the first shift position, the second shift position, or the third shift position, respectively, by selectively fitting to any one of the first fitting portion, the second fitting portion, and the third fitting portion. The positioning member is held at an angular position. If comprised in this way, since a positioning member can be stably hold | maintained in the rotation angle position corresponding to a 1st shift position, a 2nd shift position, or a 3rd shift position by a holding member, in a stable state It is possible to switch to at least three shift positions.

  In the shift device according to the above aspect, the rotation transmission mechanism preferably has the positioning member positioned at a rotation angle position corresponding to any one of the first shift position, the second shift position, and the third shift position. In this case, the drive side cam portion is configured not to be engaged with the driven side cam portion within a predetermined rotation angle range of the drive side rotation portion. If comprised in this way, when a positioning member is located in the rotation angle position corresponding to any shift position of a 1st shift position, a 2nd shift position, and a 3rd shift position, it will be a predetermined rotation angle, Since the driving side rotating part can be free to play, it is possible to flexibly cope with manufacturing errors and assembly errors of the driving side cam part and the driven side cam part, vibration due to external force, and the like. In addition, when the positioning member is positioned at a rotation angle position corresponding to any one of the first shift position, the second shift position, and the third shift position, the driving cam portion and the driven cam portion are engaged with each other. Unlike the case where the combined state is maintained, even if the drive side cam portion vibrates in the turning direction due to vibration caused by external force, the driven side cam portion is prevented from rotating excessively. Therefore, the positioning member can be stably positioned at a desired rotation angle position.

  In the configuration in which the driving cam portion includes a cam pole portion, preferably, the first shift position corresponds to a parking position, the second shift position and the third shift position correspond to a non-parking position, Of the columnar cam pole portions, one cam pole portion that rotates the positioning member from the first shift position to the rotation angle position corresponding to the second shift position is formed to have a larger outer diameter than the other cam pole portions. Of the plurality of cam lever portions, one cam lever portion that can be engaged with one cam pole portion is formed to be thicker than the other cam lever portions. With this configuration, the turning force (torque) required to rotate the positioning member when shifting from the parking position to the non-parking position is larger than the turning force (torque) at other shift positions. Even in this case, one cam pole portion having a large outer diameter among the plurality of cam pole portions and one cam lever portion having a large thickness among the plurality of cam lever portions are reliably connected from the driving side rotating portion to the driven side rotating portion. Rotation power (torque) can be transmitted to.

  In the configuration in which the drive side cam portion includes the cam pole portion, preferably, the cam lever portion is formed in a bifurcated shape that sandwiches the corresponding cam pole portion, and the interval between the opposed portions of the bifurcated shape is a bifurcated tip portion It is comprised so that it may become large toward the front-end | tip. If comprised in this way, since it becomes easy for a cam pole part to enter into the part between the bifurcated shape of the corresponding cam lever part, a cam pole part can be smoothly engaged with a corresponding cam lever part. As a result, the positioning member can be smoothly rotated to a desired rotation angle position.

  In the configuration in which the cam lever portion is formed in a bifurcated shape, preferably, the cam lever portion has a rounded shape at the end portions of the bifurcated portions facing each other. If comprised in this way, since a cam pole part can be engaged with the corresponding cam lever part more smoothly, a positioning member can be smoothly rotated by a desired rotation angle position.

  In the shift device according to the above aspect, the positioning member is preferably rotatable to a rotation angle position corresponding to the fourth shift position in addition to the first shift position, the second shift position, and the third shift position. The plurality of drive side cam portions include a first drive side cam portion as one drive side cam portion, a second drive side cam portion as another drive side cam portion, and a third drive side cam portion. And the plurality of driven cam portions can be engaged with the first drive side cam portion, the second drive side cam portion, and the third drive side cam portion, respectively, as a first driven side cam portion. Including a cam portion, a second driven side cam portion as another driven side cam portion, and a third driven side cam portion, wherein the third drive side cam portion is engaged with the third driven side cam portion. By moving in the combined state, the driven side rotating part is rotated to move the positioning member to the first position. It is configured to rotate from a shift position to the rotational angle position corresponding to the fourth shift position. If comprised in this way, in addition to a 1st shift position, a 2nd shift position, and a 3rd shift position, 4 different rotation angles corresponding to 4 shift positions including a 4th shift position by a rotation transmission mechanism Since the positioning member can be rotated to the position, it is possible to correspond to the four shift positions by rotating the positioning member using the drive source.

  In this case, preferably, the first shift position, the second shift position, the third shift position, and the fourth shift position correspond to a parking position, a back position, a neutral position, and a drive position, respectively. If comprised in this way, it can respond to four or more shift positions including a parking position, a back position, a neutral position, and a drive position at least.

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

(Additional item 1)
That is, a shift device according to another configuration of the present application includes a positioning member that is rotatably supported, a driving side rotating unit provided on the driving source side, and a driving side rotating unit provided on the positioning member side. Including a driven side rotating portion that is rotated along with the rotation of the rotation source, and a rotation transmission mechanism that transmits the rotational force from the drive source side to rotate the positioning member. A plurality of drive-side cam portions that move in different phases as the drive-side rotation portion rotates, and the driven-side rotation portion includes a plurality of engagements with the plurality of drive-side cam portions, respectively. The rotation transmission mechanism has one drive-side cam portion of the plurality of drive-side cam portions engaged with one driven-side cam portion of the plurality of driven-side cam portions; And the other drive side cam part of the plurality of drive side cam parts is engaged with the other driven side cam part of the plurality of driven side cam parts. The positioning member is rotated from the first rotation position to the second rotation position by rotating the drive-side rotation unit in a state where the other drive-side cam unit is the other driven-side cam. The positioning member is rotated in the second direction by rotating the driving side rotation portion in a state where the one driving side cam portion is not engaged with the one driven side cam portion. It is comprised so that it may rotate to a 3rd rotation position from a position. If comprised in this way, at least 3 different rotation angular positions of a 1st rotation position, a 2nd rotation position, and a 3rd rotation position by transmitting rotational force from the drive source side by a rotation transmission mechanism will be demonstrated. Since the positioning member can be rotated, the rotation of the positioning member using the drive source can at least correspond to each of the first rotation position, the second rotation position, and the third rotation position. Three shift positions can be accommodated. Therefore, if two or more drive-side cam portions and two or more driven-side cam portions are provided, the positioning member can be rotated to three or more different rotation angle positions, so that it corresponds to three or more shift positions. be able to.

(Appendix 2)
In the shift device according to the other configuration described above, preferably, the drive-side cam portion of the drive-side rotation portion is disposed at a different stage position in the direction in which the rotation axis of the drive-side rotation portion extends, The driven cam portions of the rotating portion are arranged at different step positions in the direction in which the rotating shaft of the driven side rotating portion extends. If comprised in this way, since a several drive side cam part can be engaged with the corresponding driven side cam part in a mutually different step position, the drive side cam part and driven side cam part which are not mutually corresponded Can be easily prevented from interfering (contacting).

  According to the invention according to the above aspect, as described above, it is possible to cope with three or more shift positions by rotating the positioning member using the drive source.

It is the schematic perspective view which showed the structure of the shift apparatus by one Embodiment of this invention. It is the perspective view which showed the shift switching mechanism of the shift apparatus by one Embodiment of this invention. It is the figure which showed the rotation transmission mechanism of the shift apparatus by one Embodiment of this invention. It is the top view which showed the 1st cam mechanism of the shift apparatus by one Embodiment of this invention. It is the top view which showed the 2nd cam mechanism of the shift apparatus by one Embodiment of this invention. It is the top view which showed the 3rd cam mechanism of the shift apparatus by one Embodiment of this invention. It is the top view which showed the detent plate of the shift apparatus by one Embodiment of this invention. It is a figure for demonstrating operation | movement of the shift apparatus by one Embodiment of this invention. It is the top view which showed the 2nd and 3rd cam mechanism of the shift apparatus by the modification of 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.

  As shown in FIG. 1, a shift device 100 according to an embodiment of the present invention is electrically connected via a transmission ECU 120 when a user performs a shift operation via an operation unit 110 such as a shift switch in an automobile. This is a shift device corresponding to shift-by-wire (SBW) that performs shift change control. The shift device 100 is based on a control signal transmitted from the transmission ECU 120, and includes a parking position (hereinafter referred to as P position), a back position (hereinafter referred to as R position), a neutral position (hereinafter referred to as N position) corresponding to the user's operation. ) And a drive position (hereinafter referred to as D position).

  As shown in FIG. 1, the shift device 100 includes an actuator unit 1 and a shift switching mechanism 2. The actuator unit 1 includes a motor 10 and a rotation transmission mechanism 20 that transmits rotational power from the motor 10 side and rotates a detent plate 60 described later. The rotation transmission mechanism 20 is provided on the motor 10 side, provided on the drive side rotation unit 30 that is rotated about the first axis C1 by the motor 10, and on the detent plate 60 side described later, on the drive side. It includes a driven-side rotation unit 40 that is rotated about a second axis C2 that is parallel to the first axis C1 as the rotation unit 30 rotates. The driven side rotation unit 40 is fixedly connected to the upper end of the output shaft 50 extending in the vertical direction (Z direction). The motor 10 is an example of the “drive source” 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. Yes. The detent plate 60 is fixedly connected to the lower end (end on the Z2 direction side) of the output shaft 50. That is, the detent plate 60 is configured to rotate about the second axis C <b> 2 integrally with the driven side rotation unit 40 of the rotation transmission mechanism 20. Specifically, the detent plate 60 is configured to be rotatable to rotation angle positions corresponding to the P position, the R position, the N position, and the D position. The parking rod 70 and the manual valve rod 80 fixedly connected to the detent plate 60 are configured to move to predetermined positions as the detent plate 60 rotates. The detent plate 60 is an example of the “positioning member” in the present invention.

  The parking device 90 includes a parking gear 91 connected to a crankshaft (not shown) and a lock pole 92 that can be engaged with the parking gear 91. The lock pole 92 is configured to move to a locked position and an unlocked position as the parking rod 70 moves. Specifically, when the detent plate 60 is rotated to the rotation angle position corresponding to the P position, the lock pole 92 is moved to the lock position by being rotated about the third axis C3. Thus, the protruding portion 921 is configured to engage (mesh) with the tooth portion 911 of the parking gear 91. As a result, the rotation of the parking gear 91 is restricted, and the rotation of the crankshaft (not shown) is restricted. On the other hand, when the detent plate 60 is rotated to a rotation angle position corresponding to a shift position (R position, N position, and D position) other than the P position, the lock pole 92 is moved to the non-lock position. The engagement with the parking gear 91 is released.

  The manual valve rod 80 is provided for switching a transmission hydraulic control circuit (not shown) 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. As for the other shift positions, similarly to the R position, the manual valve rod 80 is moved to a position corresponding to the predetermined shift position as the detent plate 60 rotates, so that the hydraulic pressure corresponding to the predetermined shift position is obtained. A control circuit is formed.

  Hereinafter, a more detailed configuration of the shift device 100 according to an embodiment of the present invention will be described. As shown in FIG. 1, the motor 10 of the actuator unit 1 rotates the worm gear 12 at a predetermined rotation angle via gears 11a and 11b composed of a pair of spur gears based on a control signal transmitted from the transmission ECU 120. It is configured to move.

  As shown in FIG. 3, the drive side rotation unit 30 includes a first cam pole unit 31, a second cam pole unit 32, and a second cam pole unit that move as the drive side rotation unit 30 rotates about the first axis C <b> 1. Three cam pole portions 33 are provided. The 1st cam pole part 31, the 2nd cam pole part 32, and the 3rd cam pole part 33 are each arrange | positioned in the position shifted | deviated from the 1st axis | shaft C1 to radial direction. The first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 are arranged at different step positions in the direction (Z direction) in which the rotation axis (first axis C1) of the drive side rotation portion 30 extends. Has been. Specifically, the first cam pole portion 31 is provided on the upper surface of the first pedestal portion 311 made of a helical gear meshing with the worm gear 12 so as to protrude upward (Z1 direction). The second cam pole portion 32 is provided on the upper surface of the second pedestal portion 321 supported by the first cam pole portion 31 from below (Z2 direction) so as to protrude upward (Z1 direction). The third cam pole portion 33 is provided on the upper surface of the third pedestal portion 331 supported by the second cam pole portion 32 from below (Z2 direction) so as to protrude upward (Z1 direction).

  That is, the first pedestal part 311, the second pedestal part 321 and the third pedestal part 331 are arranged in a three-stage structure in the direction (Z direction) in which the first axis C1 extends, and the first cam pole part 31, The cam pole portion 32 and the third cam pole portion 33 are provided so as to protrude above the first pedestal portion 311, the second pedestal portion 321 and the third pedestal portion 331, respectively. The first pedestal part 311, the second pedestal part 321 and the third pedestal part 331 are arranged so as to overlap each other in a direction (Z direction) in which the first axis C1 extends in a plan view. The first cam pole portion 31 is an example of the “first drive side cam portion” and “one cam pole portion” in the present invention, and the second cam pole portion 32 is the “second drive side cam portion” in the present invention. And “another cam pole portion”. The third cam pole portion 33 is an example of the “third drive side cam portion” in the present invention.

  The first cam pole portion 31 has a lower end portion fixedly attached to the first pedestal portion 311 and an upper end portion fixedly attached to the second pedestal portion 321. The second cam pole portion 32 has a lower end portion fixedly attached to the second pedestal portion 321 and an upper end portion fixedly attached to the third pedestal portion 331. The third cam pole portion 33 has a lower end fixedly attached to the third pedestal portion 331 and an upper end fixedly attached to the upper rotating shaft portion 30 a having a cylindrical shape of the driving side rotating portion 30. It has been. A lower rotation shaft portion 30 b having a cylindrical shape of the drive side rotation portion 30 is fixedly attached to the lower surface of the first pedestal portion 311. The columnar upper rotating shaft portion 30a and the lower rotating shaft portion 30b are disposed on the first axis C1. The upper rotation shaft portion 30a is rotatably supported by a bearing portion of an upper case (not shown), and the lower rotation shaft portion 30b is rotated by a bearing portion (not shown) of the lower case 1a (see FIG. 1). It is supported movably. The drive side rotation unit 30 is configured such that when the worm gear 12 is rotated by the motor 10, the first pedestal portion 311 made of a helical gear meshing with the worm gear 12 is rotated, and the first to third pedestal portions 31 a to 31- 33a and the first to third cam pole portions 31 to 33 are configured to rotate integrally around the first axis C1.

  The 1st cam pole part 31, the 2nd cam pole part 32, and the 3rd cam pole part 33 are formed in the column shape. Further, as shown in FIGS. 4 to 6, the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 are driven at different phases when the drive side turning portion 30 is turned. The revolving unit 30 is configured to revolve around a rotation axis (first axis C1). Further, as shown in FIG. 4, the first cam pole portion 31 is disposed at a position where the center O <b> 1 is separated from the rotation axis (first axis C <b> 1) of the drive side rotation portion 30 by a distance D <b> 1 in the radial direction. Further, as shown in FIG. 5, the second cam pole portion 32 is disposed at a position where the center O2 is separated from the first axis C1 of the driving side rotation portion 30 by a distance D2 that is smaller than the distance D1 in the radial direction. As shown in FIG. 6, the third cam pole portion 33 is located at a position where the center O3 is separated from the first axis C1 of the driving side rotation portion 30 in the radial direction by a distance D3 having the same size as the distance D2 of the second cam pole portion 32. Is arranged. The first cam pole portion 31 has an outer diameter D4, and the second cam pole portion 32 has an outer diameter D5 that is smaller than the outer diameter D4 of the first cam pole portion 31. The third cam pole portion 33 has an outer diameter D6 that is the same size as the outer diameter D5 of the second cam pole portion 32.

  As shown in FIG. 3, the driven side rotation unit 40 includes a first cam lever portion 41, a second cam lever portion 42, and a first cam pole portion 31, a second cam pole portion 32, and a third cam pole portion 33, respectively. A third cam lever portion 43 is provided. The first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43 are arranged at different step positions in the direction (Z direction) in which the rotation shaft (second axis C2) of the driven side rotation portion 40 extends. Has been. Specifically, the first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43 are arranged in a three-stage structure in the direction (Z direction) in which the second shaft C2 extends, It is provided at a height position (step position) corresponding to the portion 31, the second cam pole portion 32 and the third cam pole portion 33. The first cam lever portion 41 is an example of the “first driven cam portion” and the “one cam lever portion” in the present invention, and the second cam lever portion 42 is the “second driven cam portion” in the present invention. And an example of “another cam lever portion”. The third cam lever portion 43 is an example of the “third driven cam portion” in the present invention.

  A driven main body 44 is fixedly attached to the lower surface of the third cam lever 43. When the drive side rotation unit 30 is rotated about the first axis C1, the driven side rotation unit 40 corresponds to any one of the first cam lever unit 41, the second cam lever unit 42, and the third cam lever unit 43. The first to third cam lever portions 41 to 43 and the driven side main body portion 44 are configured to rotate integrally around the second axis C2 by engaging with the cam pole portion. In addition, a columnar output shaft 50 that rotates coaxially (second axis C2) with the driven side rotating unit 40 is fixedly attached to the lower portion of the driven side main body 44. The output shaft 50 is provided so as to penetrate the lower case 1a (see FIG. 1) and protrude downward (Z2 direction) from the actuator unit 1.

  The 1st cam lever part 41, the 2nd cam lever part 42, and the 3rd cam lever part 43 are formed in plate shape. The second cam lever portion 42 and the third cam lever portion 43 are formed in the same shape. As shown in FIG. 3, the first cam lever portion 41 has a plate thickness t <b> 1 that is larger than the plate thickness t <b> 2 of the second cam lever portion 42. The third cam lever portion 43 has a plate thickness t3 that is the same as the plate thickness t2 of the second cam lever portion. That is, the plate thickness t1 of the first cam lever portion 41 corresponding to the shift change from the P position to the R position is larger than the plate thickness t2 of the second cam lever portion 42 and the plate thickness t3 of the third cam lever portion 43. Is formed.

  As shown in FIG. 4, the first cam lever portion 41 has a concave cam groove 411 formed in a notch shape, and the first cam pole portion 31 is inserted into the cam groove 411 so that the first cam pole portion 31 It is configured to engage. That is, the first cam lever portion 41 is formed in a bifurcated shape, and is configured to engage with the first cam pole portion 31 by sandwiching the first cam pole portion 31. The first cam pole portion 31 and the first cam lever portion 41 constitute a first cam mechanism arranged in the first stage.

  As shown in FIG. 5 (FIG. 6), the second cam lever portion 42 (third cam lever portion 43) has a concave cam groove 421 (431) formed in a notch shape, like the first cam lever portion 41. The second cam pole portion 32 (third cam pole portion 33) is configured to be engaged with the second cam pole portion 32 (third cam pole portion 33) by being inserted into the cam groove 421 (431). That is, the second cam lever portion 42 (third cam lever portion 43) is formed in a bifurcated shape, and the second cam pole portion 32 (third cam pole portion) is sandwiched between the second cam pole portion 32 (third cam pole portion 33). 33). The second cam pole portion 32 (third cam pole portion 33) and the second cam lever portion 42 (third cam lever portion 43) are provided with a second cam mechanism (third cam mechanism) arranged at the second stage (third stage). It is composed.

  As shown in FIGS. 4 to 6, the first cam lever portion 41 has a bifurcated portion width W <b> 1, a bifurcated portion width W <b> 2 of the second cam lever portion 42, and a bifurcated portion of the third cam lever portion 43. It is formed to be larger than the width W3. The width W2 of the bifurcated portion of the second cam lever portion 42 and the width W3 of the bifurcated portion of the third cam lever portion 43 are the same size.

  The first cam lever portion 41 (the second cam lever portion 42 and the third cam lever portion 43) is slightly smaller than the outer diameter D4 (D5 and D6) of the cam pole portion corresponding to the interval I1 (I2 and I3) between the portions facing each other. It is configured to be large. Thereby, it is possible to smoothly engage the first to third cam lever portions 41 to 43 and the corresponding first to third cam pole portions 31 to 33. As shown in FIG. 4, the first cam lever portion 41 is configured such that the interval between the two opposing portions of the bifurcated shape increases toward the distal end at the bifurcated distal end portion 412. That is, the interval between the tip portions 412 of the two-forked portions facing each other gradually increases from the interval I1 toward the tip. Specifically, the first cam lever portion 41 has a bifurcated end portion 412 that is opposite to each other and has a rounded shape due to R chamfering.

  As shown in FIG. 5 (FIG. 6), the second cam lever portion 42 (third cam lever portion 43) has a bifurcated tip end portion 422 in the same manner as the first cam lever portion 41. (432) is configured to increase toward the tip. In other words, the interval between the tip portions 422 (432) of the portions facing each other in the bifurcated shape is gradually increased from the interval I2 (I3) toward the tip. More specifically, the second cam lever portion 42 (third cam lever portion 43) has a bifurcated end portion 422 (432) that is opposed to each other and rounded by R chamfering. The second cam lever portion 42 (third cam lever portion 43) has a bifurcated outer tip portion 423 (433) opposite to the opposite side of the bifurcated shape, and a bifurcated opposite tip portion 422 (432). Similarly, it has a rounded shape by R chamfering. As a result, the second cam pole portion 32 (third cam pole portion 33) is prevented from contacting (interfering) with the bifurcated outer end portion 423 (433) of the second cam lever portion 42 (third cam lever portion 43). Is possible.

  With the configuration as described above, the rotation transmission mechanism 20 moves the driven-side rotation unit 40 by moving in one direction (the other direction) with the first cam pole unit 31 engaged with the first cam lever unit 41. It is possible to rotate the detent plate 60 from the P position (R position) to the rotation angle position corresponding to the R position (P position). That is, in the state where the first cam pole portion 31 is engaged with the first cam lever portion 41, the rotation transmission mechanism 20 moves the detent plate 60 to the rotation angle position corresponding to the P position and the rotation angle position corresponding to the R position. It is possible to rotate between. At this time, the first cam pole portion 31 engages with the first cam lever portion 41, while the second cam pole portion 32 (third cam pole portion 33) does not engage with the second cam lever portion 42 (third cam lever portion 43). .

  Further, the rotation transmission mechanism 20 moves in one direction with the second cam pole portion 32 (third cam pole portion 33) engaged with the second cam lever portion 42 (third cam lever portion 43), so that the driven side The rotation part 40 is rotated to rotate the detent plate 60 from the R position (N position) to the rotation angle position corresponding to the N position (D position). When the second cam pole part 32 (third cam pole part 33) is engaged with the second cam lever part 42 (third cam lever part 43), the rotation transmission mechanism 20 It is comprised so that it may not engage. In other words, when any one of the first to third cam pole portions 31 to 33 is engaged with the corresponding first to third cam lever portions 41 to 43, the rotation transmission mechanism 20 The cam pole portion and the cam lever portion of the set are configured not to engage with each other.

  Further, the rotation transmission mechanism 20 is configured such that when the detent plate 60 is positioned at a rotation angle position corresponding to any one of the P position, the R position, the N position, and the D position, the rotation transmission mechanism 30 The first to third cam pole portions 31 to 33 are configured not to engage with the first to third cam lever portions 41 to 43, respectively, within a predetermined rotation angle range (in this embodiment, a range of 20 degrees). Yes. In other words, when the detent plate 60 is located at a rotation angle position corresponding to any one of the P position, the R position, the N position, and the D position, the predetermined rotation of the drive side rotation unit 30 is performed. In the angle range, the cam pole portion and the cam lever portion are not in contact with each other, and the driven side rotating portion 40 is not rotated. That is, when the detent plate 60 is located at a rotation angle position corresponding to any one of the P position, the R position, the N position, and the D position, a play range (a range where the wheel rotates idly) is set in the drive side rotation unit 30. ing.

  The detent plate 60 of the shift switching mechanism 2 is configured to be 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. The detent spring 61 is an example of the “holding member” in the present invention.

  As shown in FIGS. 1, 2 and 7, the detent plate 60 includes a P fitting portion 62a, an R fitting portion 62b, and an N fitting portion corresponding to the P position, the R position, the N position, and the D position, respectively. 62c and D fitting portion 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. As shown in FIG. 7, the P fitting portion 62a is formed to have a greater notch depth than the other fitting portions (R fitting portion 62b, N fitting portion 62c, and D fitting portion 62d). ing. The angular interval (phase difference) α1 (20 degrees in this embodiment) between the P fitting portion 62a and the R fitting portion 62b is the angular interval (phase difference) between the R fitting portion 62b and the N fitting portion 62c. It is larger than α2 (10 degrees in this embodiment). That is, the phase difference α1 between the P fitting portion 62a and the R fitting portion 62b when the detent plate 60 rotates around the second axis C2 is greater than the phase difference α2 between the R fitting portion 62b and the N fitting portion 62c. Is also set larger. The angular interval (phase difference) α3 (10 degrees in this embodiment) between the N fitting portion 62c and the D fitting portion 62d is the angular interval (phase difference) between the R fitting portion 62b and the N fitting portion 62c. It is set to the same size as α2 (10 degrees in this embodiment). The P fitting portion 62a, the R fitting portion 62b, and the N fitting portion 62c are respectively the “first fitting portion”, “second fitting portion”, and “third fitting portion” of the present invention. It is an example.

  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 611 that can slide along an outer peripheral surface 60 a (see FIG. 7) provided with a plurality of fitting portions of the detent plate 60. The detent spring 61 is supported in a cantilevered manner by a support portion (not shown), and is configured to urge the outer peripheral surface 60a of the detent plate 60 on the free end side. That is, the detent spring 61 engages (fits) the roller portion 611 with the corresponding fitting portion when the roller portion 611 slides along the outer peripheral surface 60a of the detent plate 60 as the detent plate 60 rotates. A). Thereby, the detent plate 60 is held at a predetermined rotation angle position by the detent spring 61.

  In the present embodiment, as described above, since the notch depth of the P fitting portion 62a is formed larger than that of the other fitting portions, the detent spring 61 is adjacent to the R fitting portion 62b from the P fitting portion 62a. When it is moved, the turning force (torque) for rotating the detent plate 60 becomes larger than when moving between the other fitting portions. That is, when the shift change is performed from the P position to the R position, a larger rotational force (torque) is required to rotate the detent plate 60 than when the shift change is performed between other shift positions. Therefore, as described above, the first cam pole portion 31 corresponding to the shift change from the P position to the R position has an outer diameter D4 of the second cam pole portion 32 and an outer diameter D6 of the third cam pole portion 33. It is formed so as to be larger. Further, the first cam lever portion 41 corresponding to the shift change from the P position to the R position has a plate thickness t1 and a width W1 of the forked portion of the second cam lever portion 42 (third cam lever portion 43). It is formed to be larger than the thickness t2 (t3) and the width W2 (W3) of the bifurcated portion.

  The parking rod 70 and the manual valve rod 80 are fixedly connected to a position separated from the second axis C2 of the detent plate 60, as shown in FIGS. 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 second 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 third axis C3. 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 that extends in the radial direction of the detent plate 60 that rotates about the second axis C2.

  Next, the operation of the shift device 100 when a shift operation (shift change) is performed by the user will be described with reference to FIGS. Here, a case where the user performs a shift change in the order of the R position, the N position, and the D position (hereinafter referred to as the forward direction) from the P position will be described. When a shift change is performed from the D position in the order of the N position, the R position, and the P position (hereinafter referred to as the reverse direction), the operation in the opposite direction to the forward direction described below is performed. Further, in the example shown in FIG. 8, the first cam pole portion 31 when a forward shift change is performed (when the drive side rotation portion 30 is rotated counterclockwise (the direction indicated by the solid line arrow)). Is set to the reference position of the drive side rotation unit 30 (the position where the rotation angle of the drive side rotation unit 30 is 0 degree). Further, the state where the detent plate 60 is located at the rotation angle position corresponding to the P position is set to the reference position of the detent plate 60 (position where the rotation angle of the detent plate 60 is 0 degree). In the present embodiment, in the state surrounded by the thick frame in FIG. 8, any of the first to third cam pole portions 31 to 33 is engaged with the corresponding first to third cam lever portions 41 to 43. Yes. That is, in the state surrounded by the thick frame in FIG. 8, power transmission is performed from the drive side rotation unit 30 to the driven side rotation unit 40.

  First, when the detent plate 60 is located at the rotation angle position (0 degree position) corresponding to the P position, the drive side rotation part 30 is -20 degrees (20 degrees clockwise from the reference position) or more. The first to third cam pole portions 31 to 33 and the first to third cam lever portions 41 to 43 are not brought into contact (engaged) within a range of less than 50 degrees. That is, even if the drive side rotation unit 30 is rotated within a range of −20 degrees or more and less than 0 degrees, the detent plate 60 is not rotated (the rotation angle position corresponding to the P position is maintained).

  When the user shifts forward from the P position toward the D position, the motor 10 is driven in a predetermined direction based on a control signal from the transmission ECU 120. Along with this, the drive side turning portion 30 is turned counterclockwise (in the direction indicated by the solid line arrow) around the first axis C1 (see FIG. 4), and the first cam pole portion 31 of the first cam mechanism is moved. Engages with the first cam lever portion 41. Then, when the drive side turning portion 30 is turned in a state where the first cam pole portion 31 is engaged with the first cam lever portion 41, the first cam lever portion 41 is moved by the first cam pole portion 31 to the second axis C2 ( 4) and is rotated clockwise (in the direction indicated by the solid line arrow). Thereby, the detent plate 60 is rotated around the second axis C2 from the P position toward the rotation angle position corresponding to the R position. At this time, as the parking rod 70 is moved, the lock pole 92 is moved from the locked position to the unlocked position, whereby the engagement state of the parking gear 91 and the lock pole 92 is changed from the locked state to the unlocked state. Switch to

  Thereafter, the drive side rotation unit 30 is rotated up to 80 degrees, whereby the detent plate 60 is rotated to a rotation angle position (a position of 10 degrees) corresponding to an intermediate position between the P position and the R position. And if the drive side rotation part 30 is rotated to 160 degree | times, the detent plate 60 will be rotated to the rotation angle position (20 degree position) corresponding to R position. At this time, the first cam pole portion 31 is separated from the first cam lever portion 41 and the engaged state of the first cam pole portion 31 and the first cam lever portion 41 is released. When the drive side rotation part 30 is rotated from 160 degrees to 180 degrees, none of the first to third cam pole parts 31 to 33 is engaged with the first to third cam lever parts 41 to 43. That is, when the drive side rotation unit 30 is rotated from 160 degrees to 180 degrees, the detent plate 60 is not rotated but is held at a rotation angle position (a position of 20 degrees) corresponding to the R position. The In addition, the angle difference (phase difference) between the rotation angle position (0 degree position) of the detent plate 60 corresponding to the P position and the rotation angle position (20 degree position) of the detent plate 60 corresponding to the R position. Corresponds to the angular interval (phase difference) α1 between the P fitting portion 62a and the R fitting portion 62b shown in FIG.

  When the drive side rotation unit 30 is rotated up to 180 degrees, the second cam pole unit 32 of the second cam mechanism is engaged with the second cam lever unit 42. Then, in a state in which the second cam pole portion 32 is engaged with the second cam lever portion 42, the drive side turning portion 30 is further turned counterclockwise, whereby the second cam lever portion 42 is moved to the second cam pole portion 32. Is pushed clockwise around the second axis C2 (see FIG. 5) (in the direction indicated by the solid line arrow). Thereby, the detent plate 60 is rotated around the second axis C2 from the R position toward the rotation angle position corresponding to the N position.

  When the drive side rotation unit 30 is rotated to 350 degrees, the detent plate 60 is rotated to a rotation angle position (position of 30 degrees) corresponding to the N position, and the second cam pole portion 32 is It is separated from the second cam lever portion 42. In the first cam mechanism, the detent plate 60 is rotated 20 degrees clockwise (from 0 degrees to 20 degrees) as the driving side rotation section 30 is rotated 160 degrees clockwise (from 0 degrees to 160 degrees). On the other hand, in the second cam mechanism, the detent plate 60 rotates clockwise as the driving side rotation unit 30 rotates 170 degrees clockwise (from 180 degrees to 350 degrees). It is rotated 10 degrees (from 20 degrees to 30 degrees).

  When the drive side rotation unit 30 is rotated from 350 degrees to 370 degrees, the detent plate 60 is not rotated but is held at a rotation angle position (position of 30 degrees) corresponding to the N position. Note that the angle difference (phase difference) between the rotation angle position of the detent plate 60 corresponding to the R position (position of 20 degrees) and the rotation angle position of the detent plate 60 corresponding to the N position (position of 30 degrees). Corresponds to the angular interval (phase difference) α2 between the R fitting portion 62b and the N fitting portion 62c shown in FIG.

  When the driving side rotation unit 30 is rotated to 370 degrees, the third cam pole portion 33 of the third cam mechanism is engaged with the third cam lever portion 43. Then, with the third cam pole portion 33 engaged with the third cam lever portion 43, the third cam lever portion 43 is rotated further counterclockwise, whereby the third cam lever portion 43 is rotated to the third cam pole portion 33. Is pushed clockwise around the second axis C2 (see FIG. 6) (in the direction indicated by the solid line arrow). As a result, the detent plate 60 is rotated around the second axis C2 from the N position toward the rotation angle position corresponding to the D position.

  When the drive side rotation unit 30 is rotated to 540 degrees, the detent plate 60 is rotated to the rotation angle position (40 degree position) corresponding to the D position, and the third cam pole portion 33 is Separated from the third cam lever portion 43. In the third cam mechanism, similarly to the second cam mechanism, the detent plate 60 is rotated 10 degrees clockwise as the drive side rotation unit 30 rotates 170 degrees clockwise (from 370 degrees to 540 degrees). Rotate degrees (from 30 degrees to 40 degrees).

  In the range from 540 degrees to 560 degrees of the drive side rotation unit 30, the detent plate 60 is not rotated but is held at a rotation angle position (a position of 40 degrees) corresponding to the D position. In addition, the angle difference (phase difference) between the rotation angle position (position of 30 degrees) of the detent plate 60 corresponding to the N position and the rotation angle position (position of 40 degrees) of the detent plate 60 corresponding to the D position. Corresponds to the angular interval (phase difference) α3 between the N fitting portion 62c and the D fitting portion 62d shown in FIG.

  In the present embodiment, as described above, the first cam pole portion 31 is engaged with the first cam lever portion 41 in the rotation transmission mechanism 20 that transmits the rotational force from the motor 10 side to rotate the detent plate 60. By moving in this way, the driven-side rotation unit 40 is rotated to rotate the detent plate 60 from the P position to the rotation angle position corresponding to the R position. Further, the second cam pole portion 32 moves in a state of being engaged with the second cam lever portion 42, thereby rotating the driven side rotating portion 40 and rotating the detent plate 60 from the R position to the N position. The rotation transmission mechanism 20 is configured to rotate to a position. Further, when the third cam pole portion 33 moves in a state of being engaged with the third cam lever portion 43, the driven side rotation portion 40 is rotated to rotate the detent plate 60 from the N position to the D position. The rotation transmission mechanism 20 is configured to rotate to a position. As a result, the rotational transmission mechanism 20 transmits the rotational force from the motor 10 side to the detent plate 60 at four different rotational angular positions corresponding to the four shift positions of the P position, R position, N position and D position. Since the detent plate 60 is rotated using the motor 10, it is possible to correspond to four (three or more) shift positions.

  In the present embodiment, as described above, the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 of the drive side rotation portion 30 are connected to the rotation axis (first shaft) of the drive side rotation portion 30. The first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43 of the driven side rotating portion 40 are arranged at different positions in the extending direction (Z direction) of the one axis C1). In the direction (Z direction) in which the rotation axis (second axis C2) of the rotation unit 40 extends, the rotation units 40 are arranged at different step positions. Accordingly, the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 are engaged with the first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43, respectively, at different step positions. Therefore, it is possible to easily prevent the cam pole portion and the cam lever portion that are not in a corresponding relationship from interfering (contacting).

  In the present embodiment, as described above, the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 are formed in a cylindrical shape, and the first cam lever portion 41, the second cam lever portion 42, and the third cam pole portion 33 are formed. The cam lever portion 43 is formed in a bifurcated shape that can be engaged with each of the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33. Thereby, the cam pole portion and the cam lever portion having a simple configuration can easily engage the cam pole portion and the cam lever portion corresponding to each other to rotate the detent plate 60 to a predetermined rotation angle position.

  In the present embodiment, as described above, the detent spring 61 is selectively fitted to any one of the P fitting portion 62a, the R fitting portion 62b, the N fitting portion 62c, and the D fitting portion 62d. Accordingly, the detent plate 60 is configured to be held at the rotation angle positions corresponding to the P position, the R position, the N position, or the D position, respectively. Thereby, the detent spring 61 can stably hold the detent plate 60 at the rotation angle position corresponding to the P position, the R position, the N position or the D position, so that the four shift positions are stable. You can switch to

  Further, in the present embodiment, as described above, when the detent plate 60 is positioned at the rotation angle position corresponding to any of the shift positions of the P position, the R position, the N position, and the D position, the drive side rotation is performed. In a predetermined rotation angle range (range of 20 degrees) of the portion 30, the first cam pole portion 31, the second cam pole portion 32, and the third cam pole portion 33 are the first cam lever portion 41 and the second cam lever portion 42, respectively. The rotation transmission mechanism 20 is configured so as not to engage with the third cam lever portion 43. As a result, when the detent plate 60 is positioned at a rotation angle position corresponding to any one of the shift positions of the P position, R position, N position, and D position, the drive side rotation unit 30 corresponds to a predetermined rotation angle. Therefore, it is possible to flexibly cope with manufacturing errors and assembly errors of the cam pole portion and the cam lever portion, vibration due to external force, and the like. In addition, when the detent plate 60 is positioned at the rotation angle position corresponding to any of the shift positions of the P position, R position, N position, and D position, the cam pole portion and the cam lever portion maintain the engaged state with each other. Unlike the case where the cam pole portion vibrates in the turning direction due to vibrations caused by external force, etc., the cam lever portion can be prevented from turning too sensitively. It can be stably positioned at the rotation angle position.

  In the present embodiment, as described above, the first cam pole portion 31 is formed to have an outer diameter larger than that of the second cam pole portion 32 and the third cam pole portion 33, and the first cam lever portion 41 is The second cam lever portion 42 and the third cam lever portion 43 are formed to be thicker. As a result, the turning force (torque) required to rotate the detent plate 60 when shifting from the P position to the non-P position (R position, N position, and D position) is the turning force at other shift positions. Even in the configuration as in the present embodiment, which is larger than (torque), the first cam pole portion 31 having a large outer diameter and the first cam lever portion 41 having a large thickness allow the driven-side rotating portion 30 to be driven-side rotating portion. Thus, the rotational force (torque) can be reliably transmitted to 40.

  Further, in the present embodiment, as described above, the distances (I1, I2, and I3) between the two portions of the bifurcated shape that are opposed to each other are increased toward the distal end at the bifurcated tip portions (412, 422, and 432). The first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43 are configured. Accordingly, the corresponding cam pole portion can easily enter the portion between the bifurcated shapes of the cam lever portion, so that the cam pole portion can be smoothly engaged with the cam lever portion. As a result, the detent plate 60 can be smoothly rotated to a desired rotation angle position.

  In the present embodiment, as described above, the front end portions (412, 422, and 432) of the bifurcated portions of the first cam lever portion 41, the second cam lever portion 42, and the third cam lever portion 43 that are opposed to each other are rounded. It is formed in a tinged shape. As a result, the cam pole portion can be more smoothly engaged with the cam lever portion, so that the detent plate 60 can be smoothly rotated at a desired rotation angle position.

  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-described embodiment, an example in which the shift device of the present invention is applied to a shift device for an automobile has been described, but the present 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.

  Moreover, although the example which arrange | positions a 1st-3rd cam pole part in a mutually different step position was shown in the said embodiment, this invention is not limited to this. In the present invention, all or part of the first to third cam pole portions may be arranged at the same step position. For example, as in the modification shown in FIG. 9, the second cam pole portion 32a of the second cam mechanism and the third cam pole portion 33a of the third cam mechanism may be arranged at the same step position. Specifically, the second cam pole portion 32 a and the third cam pole portion 33 a are provided on the upper surface of the second pedestal portion 321. Further, the second cam lever portion 42a is provided at the step position corresponding to the second cam pole portion 32a and the third cam pole portion 33a. The second cam lever portion 42a has a concave cam groove 421a (second cam mechanism) that can be engaged with the second cam pole portion 32a, and a concave cam groove 421b (third cam that can be engaged with the third cam pole portion 33a). Mechanism). When the second cam pole portion 32a (third cam pole portion 33a) is engaged with the cam groove 421a (421b), the third cam pole portion 33a (second cam pole portion 32a) is the cam groove 421b (421a). It is comprised so that it may not engage with.

  Accordingly, the second cam pole portion 32a moves in a state of being engaged with the cam groove 421a, thereby rotating the second cam lever portion 42a and moving the detent plate 60 from the R position to the rotation angle position corresponding to the N position. It is possible to rotate. Further, when the third cam pole portion 33a moves while being engaged with the cam groove 421b, the second cam lever portion 42a is rotated to rotate the detent plate 60 from the N position to the rotation angle position corresponding to the D position. It is possible to move.

  Moreover, in the said embodiment, the 1st-3rd cam pole part and the 1st-3rd cam lever part are provided, and the structure which can respond to four shift positions, P position, R position, N position, and D position is shown. However, the present invention is not limited to this. In the present invention, by providing two cam pole portions and two cam lever portions, it may be configured to support only three shift positions, or four or more sets of cam pole portions and cam lever portions (cam mechanisms) may be provided. By providing, the structure which can respond to five or more shift positions may be sufficient.

  Moreover, in the said embodiment, while showing a cylindrical 1st-3rd cam pole part as an example of the 1st-3rd drive side cam part of this invention, respectively, the 1st-3rd driven cam of this invention is shown. As an example of the portion, the bifurcated first to third cam lever portions that can be engaged with the first to third cam pole portions are shown, but the present invention is not limited to this. In the present invention, the first to third drive cam portions other than the cylindrical first to third cam pole portions may be used, or the first to third driven portions other than the bifurcated first to third cam lever portions. A side cam part may be sufficient. For example, the driving cam portion is constituted by a plate cam whose distance from the rotation center to the outer periphery is not constant, and the driven cam portion is engaged (sliding) with the outer peripheral surface of the plate cam to achieve a predetermined rotation. You may comprise by the cam lever rotated to an angular position.

  Moreover, in the said embodiment, although the example which arrange | positions a 2nd base part and a 3rd base part in order toward the upper direction from the 1st base part which consists of helical gears was shown, this invention is not limited to this. In the present invention, the second pedestal portion and the third pedestal portion may be arranged in order toward the lower side of the first pedestal portion made of a helical gear, or the second pedestal portion and the third pedestal portion, respectively. You may arrange | position above and below the 1st base part which consists of helical gears.

  Further, in the above embodiment, an example in which the tip portions of the bifurcated portions of the first to third cam lever portions facing each other is formed in a rounded shape by R chamfering, but the present invention is not limited to this. I can't. In this invention, you may form the front-end | tip part of the bifurcated mutually opposing part of a 1st-3rd cam lever part so that it may have a taper shape which tapers toward a front-end | tip by C chamfering.

  Moreover, in the said embodiment, although the detent spring which consists of a leaf | plate spring was shown as an example of the holding member of this invention, this invention is not limited to this. In the present invention, if the positioning member can be held at a predetermined rotation angle position, for example, a holding member that holds the positioning member using the biasing force of the coil spring, or a holding member that holds the positioning member without using the biasing force. A holding member other than a detent spring made of a leaf spring, such as a member, may be used.

10 Motor (drive source)
20 Rotation transmission mechanism 30 Drive side rotation part 31 1st cam pole part (1st drive side cam part, one cam pole part)
32, 32a Second cam pole part (second drive side cam part, other cam pole part)
33, 33a Third cam pole portion (third drive side cam portion)
40 driven side rotating part 41 first cam lever part (first driven side cam part, one cam lever part)
42, 42a Second cam lever part (second driven cam part, other cam lever part)
43 3rd cam lever part (3rd driven cam part)
60 Detent plate (positioning member)
61 Detent spring (holding member)
62a P fitting part (first fitting part)
62b R fitting part (second fitting part)
62c N fitting part (third fitting part)
62d D fitting part 100 shift device 412, 422, 432 tip part

Claims (10)

A positioning member that is rotatable to a plurality of rotation angle positions corresponding to at least the first shift position, the second shift position, and the third shift position;
A drive-side rotation portion provided on the drive source side; and a driven-side rotation portion provided on the positioning member side and rotated in accordance with the rotation of the drive-side rotation portion. A rotation transmission mechanism that transmits rotational force from the side to rotate the positioning member, and
The drive-side rotation unit has a plurality of drive-side cam units that move as the drive-side rotation unit rotates.
The driven-side rotating portion has a plurality of driven-side cam portions that can be engaged with the plurality of driving-side cam portions, respectively.
The rotation transmission mechanism moves in a state in which one driving side cam portion of the plurality of driving side cam portions is engaged with one driven side cam portion of the plurality of driven side cam portions. And rotating the driven side rotation portion to rotate the positioning member from the first shift position to a rotation angle position corresponding to the second shift position, and among the plurality of drive side cam portions By moving the other driving side cam portion in a state of being engaged with the other driven side cam portion of the plurality of driven side cam portions, the driven side rotating portion is rotated to move the positioning member to the position of the positioning member. A shift device configured to rotate from a second shift position to a rotation angle position corresponding to the third shift position. The plurality of drive side cam portions of the drive side rotation portion are arranged at different step positions in a direction in which the rotation axis of the drive side rotation portion extends,
2. The shift device according to claim 1, wherein the plurality of driven-side cam portions of the driven-side rotating portion are arranged at different step positions in a direction in which the rotating shaft of the driven-side rotating portion extends. The plurality of drive side cam portions are a plurality of columnar cam pole portions,
The shift device according to claim 1, wherein the plurality of driven cam portions are a plurality of cam lever portions that engage with the corresponding cam pole portions. A holding member that holds the positioning member at a plurality of rotation angle positions corresponding to at least the first shift position, the second shift position, and the third shift position;
The positioning member has at least a first fitting portion, a second fitting portion, and a third fitting portion corresponding to each of the first shift position, the second shift position, and the third shift position,
The holding member is selectively fitted into any one of the first fitting portion, the second fitting portion, or the third fitting portion, so that the first shift position and the second shift respectively. The shift device according to claim 1, wherein the shift device is configured to hold the positioning member at a rotational angle position corresponding to a position or the third shift position.   When the positioning member is positioned at a rotation angle position corresponding to any one of the first shift position, the second shift position, and the third shift position, the rotation transmission mechanism is 5. The shift device according to claim 1, wherein the driving side cam portion is configured not to engage with the driven side cam portion within a predetermined rotation angle range of the rotation portion. The first shift position corresponds to a parking position, the second shift position and the third shift position correspond to a non-parking position,
Of the plurality of columnar cam pole portions, one cam pole portion that rotates the positioning member from the first shift position to a rotation angle position corresponding to the second shift position has an outer diameter that is larger than that of the other cam pole portions. Is formed to be large,
4. The shift device according to claim 3, wherein among the plurality of cam lever portions, one cam lever portion that can be engaged with the one cam pole portion is formed to have a thickness larger than that of the other cam lever portion.   The cam lever portion is formed in a bifurcated shape that sandwiches the corresponding cam pole portion, and is configured such that the interval between the opposed portions of the bifurcated shape increases toward the distal end at the bifurcated distal end portion. The shift device according to claim 3 or 6.   The shift device according to claim 7, wherein the cam lever portion has a rounded shape at a tip portion of the bifurcated portion facing each other. In addition to the first shift position, the second shift position, and the third shift position, the positioning member is configured to be rotatable to a rotation angle position corresponding to a fourth shift position,
The plurality of drive side cam portions include a first drive side cam portion as the one drive side cam portion, a second drive side cam portion as the other drive side cam portion, and a third drive side cam portion. Including
The plurality of driven side cam portions may be engaged with the first driving side cam portion, the second driving side cam portion, and the third driving side cam portion, respectively, as a first driven side cam portion. A driven side cam part, a second driven side cam part as the other driven side cam part, and a third driven side cam part,
The rotation transmission mechanism moves the third drive side cam portion in a state of being engaged with the third driven cam portion, thereby rotating the driven side rotation portion to move the positioning member to the first position. The shift device according to any one of claims 1 to 8, wherein the shift device is configured to rotate from a 3 shift position to a rotation angle position corresponding to the fourth shift position.   The first shift position, the second shift position, the third shift position, and the fourth shift position correspond to a parking position, a back position, a neutral position, and a drive position, respectively. Shift device.

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