JP2014109331A - Shifting operation device of automatic transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shifting operation device of an automatic transmission, capable of suppressing an increase in the number of components.SOLUTION: A shifting operation device of an automatic transmission includes: a rotation member 30 that can rotate with respect to a housing 10, is installed in the housing 10 in an axial movable manner, and has an engagement part 30i on an outer peripheral surface; second one-way clutches 30b and 50 that allow the rotation member 30 to rotate only in a positive rotation direction with respect to the housing 10; a shift member 40 that is installed in the housing 10 in a rotatable manner and in which a shift groove for axially moving the rotation member 30 is formed on an outer peripheral surface around the whole periphery; first one-way clutches 41 and 30f that allow the shift member 40 to rotate in only a reverse rotation direction with respect to the rotation member 30; a plurality of shift fork members on which an engaged member is formed which can engage with and remove from the engagement part 30i; and a single motor 70 that rotates the rotation member 30 in the positive rotation direction and rotates the shift member 40 in the reverse rotation direction.

Description

  The present invention relates to a shift operation device for an automatic transmission used in a vehicle.

  2. Description of the Related Art Conventionally, several automatic transmissions based on gear-type manual transmissions, which are considered to have good power transmission efficiency, have been proposed as automatic transmissions for vehicles such as automobiles. For example, as shown in Patent Document 1, a shift operation device for an automatic transmission that drives a gear transmission mechanism by a motor and operates a sleeve of a shift clutch engaged with a shift fork to switch the gear stage has been proposed.

  A shift operation device disclosed in Patent Document 1 includes a selection drive motor (slide drive motor) that is a drive source (slide actuator) of a slide mechanism, and a shift drive motor (drive actuator (rotation actuator) of a rotation mechanism). Rotation drive motor). The transmission main shaft includes a circumferential rack at the top, a spline driving gear for shifting at the center and a spline that is slidably fitted in the axial direction, and a lever below. When the main shaft for shifting is slid by driving of the selection drive motor, one of the gates of the shift fork and its lever are selectively engaged. Then, in the engaged state, the shift drive motor rotates the rotation pinion, the rotation pinion as the bevel gear, the driven gear as the bevel gear, the first intermediate drive gear, the first intermediate driven gear, and the second intermediate The rotational force is sequentially transmitted to the drive gear, the transmission main shaft drive gear, and the transmission main shaft to rotate and drive each shift fork to switch each gear stage.

JP 2002-139145 A (see FIG. 1)

  However, the shift operation device disclosed in Patent Document 1 requires two motors, a shift drive motor and a select drive motor, and various control equipment such as an ECU, a driver, and a sensor associated with the two motors. Is required, resulting in an increase in the number of parts of the shift operation device. In addition, with the increase in the number of parts of such a shift operation device, the manufacturing cost of the shift operation device increases, the mountability of the shift operation device on the vehicle deteriorates, and the weight of the vehicle increases. There was a problem.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a shift operation device for an automatic transmission that can suppress an increase in the number of parts.

  The invention according to claim 1, which has been made to solve the above-described problems, includes a main body, a rotating member attached to the main body so as to be rotatable with respect to the main body and movable in an axial direction, and the rotation. A shift pin attached to the member, a shift member that is rotatably attached to the main body, and a shift member that engages with the shift pin is formed on an outer peripheral surface, and is attached to the main body so as to be movable in the axial direction, A plurality of transmission members configured to be able to be engaged with and disengaged from the rotating member, moving in the axial direction by the movement of the rotating member in the axial direction, and operating a selection mechanism of the automatic transmission; A single motor to be rotated and when the shift member is rotated forward by the motor, by rotating the shift member and the rotation member integrally, the rotation member is When the shift member is rotated in reverse by the motor, a selection mechanism that performs a selection operation to engage with one transmission member among the plurality of transmission members, and by rotating the shift member and the rotation member relative to each other, A shift mechanism that performs a shift operation to move the rotating member from the neutral position to the odd-numbered stage side on the one side or the even-numbered stage side on the other side with respect to the axial direction, and the shift groove is at the same position with respect to the axial direction. The odd-numbered step forming groove formed on the odd-numbered step side from the neutral line, which is a line that circulates in the middle, and the even-numbered step formed groove formed on the even-numbered step side from the neutral line, A first connection groove formed along the neutral line by connecting a terminal end of the even-numbered step forming groove and a starting end of the odd-numbered end forming groove, and a terminal end of the odd-numbered step forming groove and the starting end of the even-numbered step forming groove are connected. Second connection An even-numbered stage recognition unit, a neutral stage recognition unit, and an odd-numbered stage recognition unit are formed in order on the outer peripheral surface of the rotating member at intervals in the axial direction, and detect the rotation angle of the shift member. A single second detection unit that recognizes one of the odd number stage recognition unit, the neutral recognition unit, and the even number stage recognition unit with the first detection unit and the movement of the rotating member in the axial direction; A position for detecting whether or not the rotating member is located at any of the neutral position, the odd-numbered stage side, and the even-numbered stage side based on the detection information from the first detecting unit and the second detecting unit. The odd-numbered step forming groove and the even-numbered step forming groove or the first connecting groove and the second connecting groove are formed in a non-identical manner.

  The invention according to claim 2 is the invention according to claim 1, wherein the formation angle in the circumferential direction from the start end to the end of the odd-numbered step forming groove and the formation angle in the circumferential direction from the start end to the end of the even-numbered step forming groove are Is different.

  According to a third aspect of the present invention, in the first or second aspect, the odd-numbered step forming groove is formed from the odd-numbered inclined portion inclined to the odd-numbered step side from the neutral line, and from the end of the odd-numbered inclined portion. The odd-numbered step side has an odd-numbered step portion parallel to the neutral line, and the even-numbered step forming groove is formed from the even-numbered step inclined portion inclined to the even-numbered step side from the neutral line, and from the end of the even-numbered step inclined portion. The even-numbered step side has an even-numbered step portion parallel to the neutral line, and the inclination angle of the odd-numbered step inclined portion from the neutral line is different from the inclination angle of the even-numbered step inclined portion from the neutral line. Yes.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the neutral recognition unit is formed in a plurality at a non-constant angle in a circumferential direction of the rotating member, and the position detection unit is Based on detection information from the first detection unit and the second detection unit, the position of the rotation member in the rotation direction is detected.

  According to the first aspect of the present invention, the single motor causes the shift member and the rotation member to rotate integrally by rotating the shift member in the forward direction, so that the rotation member is one of the plurality of transmission members. And a select operation for selecting one of the plurality of transmission members. A single motor reversely rotates the shift member, thereby rotating the rotation member and the shift member relative to each other, moving the rotation member in the axial direction, and moving the selected transmission member in the axial direction. I do. As described above, since both the selection operation and the shift operation can be performed by a single motor, it is possible to provide a shift operation device for an automatic transmission that can suppress an increase in the number of parts.

  According to the first aspect of the present invention, the odd-numbered step forming groove and the even-numbered step forming groove are formed non-identical, or the first connection groove and the second connection groove are formed non-identical. An even number recognition unit, a neutral recognition unit, and an odd number recognition unit are sequentially formed on the outer peripheral surface of the rotating member at intervals in the axial direction. And a single 2nd detection part recognizes either an odd number stage recognition part, a neutral recognition part, or an even number stage recognition part with the movement of the axial direction of a rotating member.

  As described above, the odd-numbered step forming groove and the even-numbered step forming groove or the first connecting groove and the second connecting groove are formed non-identical, that is, unbalanced. Thereby, when the rotation member moves in the axial direction due to relative rotation of the shift member and the rotation member, the position detection unit detects the rotation angle of the shift member detected by the first detection unit and the second detection unit. By analyzing the correspondence with the detected presence / absence of the recognition unit, it is possible to recognize whether the rotating member is located on the odd-numbered stage side or the even-numbered stage side. For this reason, it is possible to determine whether the rotating member is located on the odd-numbered stage side or the even-numbered stage side by the single second detection unit, that is, whether or not the shift operation is completed. The increase can be suppressed, and the cost of the shift operation device of the automatic transmission can be reduced.

  According to the second aspect of the present invention, the formation angle in the circumferential direction from the start end to the end of the odd-numbered step forming groove is different from the formation angle in the circumferential direction from the start end to the end of the even-numbered step forming groove. Thus, when the rotation member moves in the axial direction due to relative rotation of the shift member and the rotation member, the position detection unit is configured to detect the odd number of steps based on the presence / absence information of the recognition unit detected by the second detection unit. By recognizing the difference in the formation angle in the circumferential direction between the forming groove and the even-numbered step forming groove, it is possible to recognize whether the rotating member is located on the odd-numbered step side or the even-numbered step side. For this reason, it is possible to reliably determine whether the rotating member is located on the odd-numbered stage side or the even-numbered stage side, that is, whether the shift operation has been completed, by the single second detection unit.

  According to the invention which concerns on Claim 3, the inclination angle from the neutral line of the odd-numbered-step inclination part differs from the inclination angle from the neutral line of the even-number-step inclination part. Accordingly, when the rotation member moves in the axial direction due to the relative rotation of the shift member and the rotation member, the position detection unit is inclined at an odd number of steps based on the information on the presence or absence of the recognition unit detected by the second detection unit. It is possible to recognize the difference between the inclination angle from the neutral line of the portion and the inclination angle from the neutral line of the even-numbered inclination portion. For this reason, it is possible to reliably determine whether the rotating member is located on the odd-numbered stage side or the even-numbered stage side, that is, whether the shift operation has been completed, by the single second detection unit.

  According to the fourth aspect of the present invention, a plurality of neutral recognition parts are formed at a non-constant angle in the circumferential direction of the rotating member. Thereby, when a rotating member rotates, a position detection part can detect the position of the rotation direction of a rotating member based on the information of the presence or absence of the neutral recognition part detected by the 2nd detection part. In this way, the single second detector can detect not only the position of the rotating member in the axial direction but also the position of the rotating member in the rotating direction, thereby reducing the cost of the shift operation device of the automatic transmission. can do.

It is a skeleton figure of an automatic transmission provided with the shift operation device of this embodiment, and a vehicle carrying the automatic transmission. It is an axial sectional view of a selection mechanism. It is a perspective view of the shift operation apparatus of this embodiment. (A) It is a top view of the shift operation apparatus of this embodiment. (B) It is an A arrow view of (A), and is a side view of the shift operation device of this embodiment. It is BB sectional drawing of (B) of FIG. (A) It is DD sectional drawing of FIG. (B) It is CC sectional drawing of FIG. It is a front view of a shift member and a shaft. It is a perspective view of a rotating member and an engaged part. It is explanatory drawing which showed the engagement state of the rotating member engaging part and the to-be-engaged part of a shift fork member. It is a flowchart of the shift control which is a control program performed by AMT-ECU of FIG. It is a conceptual diagram showing the relationship between the position of each shift fork and a gear position. It is sectional drawing of the shift operation apparatus of another embodiment. It is an expanded shape figure of the shift groove | channel of a shift member. It is EE sectional drawing of FIG. It is a flowchart of an initial stage detection process. It is explanatory drawing which showed the positional relationship of the recognition protrusion formed in the rotation member, and the 2nd detection part. It is an expanded shape figure of the shift groove of the shift member of 2nd embodiment.

(Vehicle equipped with the shift operation device of the present embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a skeleton diagram of an automatic transmission equipped with the shift operation device of the present embodiment and a vehicle 1000 equipped with the automatic transmission. As shown in FIG. 1, a vehicle 1000 includes an engine EG, a clutch C, an automated manual transmission AMT (hereinafter abbreviated as AMT), a differential DF, and driving wheels Wl and Wr.

  The engine EG is a gasoline engine, a diesel engine, or the like that uses a hydrocarbon fuel such as gasoline or light oil, and outputs rotational torque. The rotational torque output from engine EG is transmitted to drive shaft EG-1.

(clutch)
The clutch C is provided between the drive shaft EG-1 and the input shaft 131 of the AMT, connects and disconnects the drive shaft EG-1 and the input shaft 131, and transmits between the drive shaft EG-1 and the input shaft 131. Any type of clutch with electronic control of torque. In the present embodiment, the clutch C is a dry single-plate normally closed clutch, and includes a flywheel 121, a clutch disk 122, a clutch cover 123, a pressure plate 124, and a diaphragm spring 125.

  The flywheel 121 is a disk having a predetermined mass, is connected to the drive shaft EG-1, and rotates integrally with the drive shaft EG-1. The clutch disk 122 has a disk shape with a friction member 122a provided on the outer edge thereof, and faces the flywheel 121 so as to be detachable. The clutch disk 122 is connected to the input shaft 131 and rotates integrally with the input shaft 131.

  The clutch cover 123 is connected to the outer edge of the flywheel 121 and is provided radially inward from the cylindrical portion 123a provided on the outer peripheral side of the clutch disc 122 and the end of the cylindrical portion 123a opposite to the connection portion with the flywheel 121. It is comprised from the extended annular plate-shaped side peripheral wall 123b. The pressure plate 124 has an annular plate shape and is disposed so as to face the clutch disk 122 on the opposite side to the face facing the flywheel 121 so as to be able to be separated from and attached to the pressure plate 124.

  The diaphragm spring 125 is a kind of so-called disc spring, and a diaphragm that is inclined in the thickness direction is formed. The intermediate portion of the diaphragm spring 125 in the radial direction is in contact with the inner edge of the side peripheral wall 123 b of the clutch cover 123, and the outer edge of the diaphragm spring 125 is in contact with the pressure plate 124. The diaphragm spring 125 presses the clutch disc 122 against the flywheel 121 via the pressure plate 124.

  In this state, the friction member 122 a of the clutch disk 122 is pressed by the flywheel 121 and the pressure plate 124, and the clutch disk 122 and the flywheel 121 rotate integrally by the frictional force between the friction member 122 a, the flywheel 121, and the pressure plate 124. Then, the drive shaft EG-1 and the input shaft 131 are connected.

  The clutch actuator 129 is driven and controlled by the AMT-ECU 113, and presses or releases the inner edge of the diaphragm spring 125 toward the flywheel 121, thereby making the transmission torque of the clutch C variable. The clutch actuator 129 includes an electric type and a hydraulic type.

  When the clutch actuator 129 presses the inner edge of the diaphragm spring 125 toward the flywheel 121, the diaphragm spring 125 is deformed and the outer edge of the diaphragm spring 125 is deformed in a direction away from the flywheel 121. Then, due to the deformation of the diaphragm spring 125, the pressing force with which the flywheel 121 and the pressure plate 124 press the clutch disc 122 is gradually reduced, and the transmission torque between the clutch disc 122 and the flywheel 121 is also gradually reduced. The shaft EG-1 and the input shaft 131 are cut.

  As described above, the AMT-ECU 113 arbitrarily varies the transmission torque between the clutch disk 122 and the flywheel 121 by driving the clutch actuator 129.

(Automated manual transmission)
The AMT is a gear mechanism type automatic transmission that shifts the rotational torque from the engine EG at a gear ratio of a plurality of gears and outputs it to the differential DF. Further, the AMT of the present embodiment is a synchromesh automatic transmission having a synchromesh mechanism described later.

  The AMT includes an AMT-ECU 113, an input shaft 131, an output shaft 132, a first drive gear 141, a second drive gear 142, a third drive gear 143, a fourth drive gear 144, a fifth drive gear 145, a reverse drive gear 146, First driven gear 151, second driven gear 152, third driven gear 153, fourth driven gear 154, fifth driven gear 155, reverse driven gear 156, output gear 157, reverse idler gear 161, first selection mechanism 100, second selection mechanism 200, A third selection mechanism 300 is included.

  The input shaft 131 is a shaft to which rotational torque from the engine EG is input, and rotates integrally with the clutch disk 122 of the clutch C. The output shaft 132 is a shaft that outputs the rotational torque input to the AMT to the differential DF, and is disposed in parallel with the input shaft 131. The input shaft 131 and the output shaft 132 are rotatably supported by an AMT housing (not shown).

  The first drive gear 141 and the second drive gear 142 are fixed gears fixed to the input shaft 131 so as not to rotate relative to each other. The third drive gear 143, the fourth drive gear 144, the fifth drive gear 145, and the reverse drive gear 146 are idle gears provided on the input shaft 131 so as to be rotatable relative to the input shaft 131.

  The first driven gear 151 and the second driven gear 152 are idle gears attached to the output shaft 132 so as to be capable of relative rotation (free rotation). The third driven gear 153, the fourth driven gear 154, the fifth driven gear 155, the reverse driven gear 156, and the output gear 157 are fixed gears fixed to the output shaft 132 so as not to be relatively rotatable.

  The first drive gear 141 and the first driven gear 151 are gears that mesh with each other and constitute a first gear. The second drive gear 142 and the second driven gear 152 are gears that mesh with each other and constitute a second gear. The third drive gear 143 and the third driven gear 153 are gears that mesh with each other and constitute a third gear. The fourth drive gear 144 and the fourth driven gear 154 are gears that mesh with each other and constitute a fourth speed stage. The fifth drive gear 145 and the fifth driven gear 155 are gears that mesh with each other and constitute a fifth gear.

  The gear diameter increases in the order of the first drive gear 141, the second drive gear 142, the third drive gear 143, the fourth drive gear 144, and the fifth drive gear 145. The first driven gear 151, the second driven gear 152, the third driven gear 153, the fourth driven gear 154, and the fifth driven gear 155 have smaller gear diameters in this order.

  The reverse idler gear 161 is disposed between the reverse drive gear 146 and the reverse driven gear 156 and meshes with the reverse drive gear 146 and the reverse driven gear 156. The reverse idler gear 161, the reverse drive gear 146, and the reverse driven gear 156 are reverse gears.

  The output gear 157 meshes with the ring gear DF-1 of the differential DF, and outputs the rotational torque input to the output shaft 132 to the differential DF.

(Selection mechanism)
[First selection mechanism]
The first selection mechanism 100 selects the first driven gear 151 or the second driven gear 152 and connects it to the output shaft 132 so as not to be relatively rotatable. As shown in FIGS. 1 and 2, the first selection mechanism 100 includes a first clutch hub H1, a first speed engagement member E1, a second speed engagement member E2, a first synchronizer ring R1, a second It consists of a synchronizer ring R2 and a first sleeve S1. The first clutch hub H1 is spline-fixed to the output shaft 132 between the first driven gear 151 and the second driven gear 152 in the axial direction. The first speed engagement member E1 and the second speed engagement member E2 are members fixed to the first driven gear 151 and the second driven gear 152, for example, by press fitting. The first synchronizer ring R1 is interposed between the first clutch hub H1 and the first speed engagement member E1, and the second synchronizer ring R2 is interposed between the first clutch hub H1 and the second speed engagement member E2. Is done. The first sleeve S1 is spline engaged with the outer periphery of the first clutch hub H1 so as to be axially movable.

  The first selection mechanism 100 enables the engagement of one of the first driven gear 151 and the second driven gear 152 with the output shaft 132, and both the first driven gear 151 and the second driven gear 152 with respect to the output shaft 132. Thus, a known synchromesh mechanism that can be released is configured.

  The first sleeve S1 of the first selection mechanism 100 is not engaged with either the first speed engagement member E1 or the second speed engagement member E2 in the “neutral position” shown in FIG. An annular first engagement groove S1-1 is formed on the outer periphery of the first sleeve S1. A first shift fork F1 (shown in FIG. 3) is engaged with the first engagement groove S1-1.

  When the first sleeve S1 is shifted toward the first driven gear 151 by the first shift fork F1, the first sleeve S1 is spline-engaged with the first synchronizer ring R1 to synchronize the rotation of the output shaft 132 and the first driven gear 151. The first driven gear 151 is then engaged with the external spline on the outer periphery of the first speed engagement member E1, and the first driven gear 151 is connected to the output shaft 132 so as not to be relatively rotatable, thereby forming the first gear. Further, if the first sleeve S1 is shifted to the second driven gear 152 side by the first shift fork F1, the second synchronizer ring R2 similarly synchronizes the rotation of the output shaft 132 and the second driven gear 152, and then Both are connected in a relatively non-rotatable manner to form a second gear.

[Second selection mechanism]
The second selection mechanism 200 selects the third drive gear 143 or the fourth drive gear 144 and connects it to the input shaft 131 so as not to be relatively rotatable. The second selection mechanism 200 includes a second clutch hub H2, a third speed engagement member E3, a fourth speed engagement member E4, a third synchronizer ring R3, a fourth synchronizer ring R4, and a second sleeve S2. It is composed of

  The second selection mechanism 200 is a synchromesh mechanism similar to the first selection mechanism 100, and the second clutch hub H2 is fixed to the input shaft 131 between the third drive gear 143 and the fourth drive gear 144, and The only difference is that the third speed engagement member E3 and the fourth speed engagement member E4 are fixed to the third drive gear 143 and the fourth drive gear 144, respectively. In the “neutral position”, the second selection mechanism 200 is not engaged with any of the engagement members E3 and E4. An annular second engagement groove S2-1 is formed on the outer periphery of the second sleeve S2. The second shift fork F2 is engaged with the second engagement groove S2-1.

  If the second sleeve S2 is shifted to the third drive gear 143 by the second shift fork F2, the rotation of the input shaft 131 and the third drive gear 143 is synchronized, and then the two are integrally connected to the third speed. A step is formed. Further, if the second sleeve S2 is shifted to the fourth drive gear 144 side by the second shift fork F2, the rotation of the input shaft 131 and the fourth drive gear 144 is synchronized, and then both are directly connected to the fourth speed. A step is formed.

[Third selection mechanism]
The third selection mechanism 300 selects the fifth drive gear 145 or the reverse drive gear 146 and connects it to the input shaft 131 so as not to be relatively rotatable. The third selection mechanism 300 includes a third clutch hub H3, a fifth speed engagement member E5, a reverse engagement member ER, a fifth synchronizer ring R5, a reverse synchronizer ring RR, and a third sleeve S3. ing.

  The third selection mechanism 300 is a synchromesh mechanism similar to the first selection mechanism 100, and the third clutch hub H3 is fixed to the input shaft 131 between the fifth drive gear 145 and the reverse drive gear 146, and the fifth clutch The only difference is that the fast engagement member E5 and the reverse engagement member ER are fixed to the fourth drive gear 144 and the reverse drive gear 146, respectively. The third selection mechanism 300 is not engaged with any of the engagement members E5 and ER in the “neutral position”. An annular third engagement groove S3-1 is formed on the outer periphery of the third sleeve S3. The third shift fork F3 is engaged with the third engagement groove S3-1.

  If the third sleeve S3 is shifted to the fifth drive gear 145 by the third shift fork F3, after the rotation of the input shaft 131 and the fifth drive gear 145 is synchronized, the two are integrally connected to the fifth speed. A step is formed. Further, if the third sleeve S3 is shifted to the reverse drive gear 146 side by the third shift fork F3, after the rotation of the input shaft 131 and the reverse drive gear 146 is synchronized, both are directly connected to form a reverse stage. Is done.

  The differential DF is a device that transmits the rotational torque input from the output shaft 132 of the AMT to the drive wheels Wl and Wr in a differential manner. The differential DF has a ring gear DF-1 that meshes with the output gear 157. With such a structure, the output shaft 132 is rotationally connected to the drive wheels Wl and Wr.

  The AMT-ECU 113 is an electronic control device that controls the AMT. The AMT-ECU 113 includes an input / output interface, a CPU, a RAM, a ROM, and a “storage unit” such as a nonvolatile memory that are connected via a bus. The CPU executes a program corresponding to the flowcharts shown in FIGS. The RAM temporarily stores variables necessary for execution of the program, and the “storage unit” stores the program.

(Structure of shift operation device)
Next, the shift operation device 90 of this embodiment will be described with reference to FIGS.
As shown in FIGS. 3 to 6, the shift operation device 90 includes a housing 10, a shaft 20, a rotation member 30, a shift member 40, a detent member 50, a first shift fork member 61, a second shift fork member 62, and a third. A shift fork member 63, a motor 70, a first detector 75, a second detector 76, a drive gear 81, and a driven gear 82 are included.

In this embodiment, the housing 10 is common to the AMT, but may be a separate body. As shown in FIG. 4, the shaft 20 is rotatably attached to the housing 10. In the following description, the axial direction of the shaft 20 is simply expressed as “axial direction”.
As shown in FIGS. 5 and 6, the shift member 40 has a cylindrical shape in which a mounting hole 40 p penetrating in the axial direction is formed. As shown in FIG. 5, the shaft 20 is inserted into the mounting hole 40 p of the shift member 40, and the shift member 40 is not rotatable relative to the shaft 20 by the bolt 45 that fastens the shift member 40 and the shaft 20. Fixed immovable in the direction. With such a structure, the shift member 40 is rotatably attached to the housing 10. As shown in FIG. 7, a one-round shift groove 40 a is formed on the outer peripheral surface of the shift member 40.

  Hereinafter, the shift groove 40a will be described with reference to FIG. In FIG. 13, a line that goes around the outer peripheral surface of the shift member 40 at the same position in the axial direction is a neutral line. Then, one side in the axial direction from the neutral line is the odd-numbered stage side, and the other side in the axial direction from the neutral line is the even-numbered stage side.

  As shown in FIG. 13, the first connection portion 40b is formed at a predetermined angle along the neutral line from the start position (0 °). A first inclined portion 40c inclined from the end of the first connecting portion 40b to the odd-numbered stage side from the neutral line is formed at a predetermined angle. An odd-numbered step portion 40d parallel to the neutral line is formed at a predetermined angle on the odd-numbered step side from the end of the first inclined portion 40c. A second inclined portion 40e inclined from the neutral line toward the even-numbered step side from the end of the odd-numbered step portion 40d is formed at a predetermined angle.

  A second connection portion 40f is formed at a predetermined angle along the neutral line from the end of the second inclined portion 40e. A third inclined portion 40g inclined from the end of the second connection portion 40f to the even-numbered stage side from the neutral line is formed at a predetermined angle. An even-numbered step portion 40h parallel to the neutral line is formed at a predetermined angle on the even-numbered step side from the end of the third inclined portion 40g. A fourth inclined portion 40i that is inclined from the neutral line toward the odd-numbered step side from the end of the even-numbered step portion 40h is formed at a predetermined angle.

  A state of the shift member 40 in which a shift pin 30e (shown in FIGS. 5, 6, and 7) to be described later is in the first connection portion 40b or the second connection portion 40f is referred to as a “neutral state”. Moreover, the state of the shift member 40 in which the shift pin 30e is in the odd-numbered step portion 40d is referred to as an “odd-numbered step state”. Furthermore, the state of the shift member 40 in which the shift pin 30e is in the even-numbered step portion 40h is referred to as an “even-numbered step state”. In the “neutral state”, all the shift forks F1 to F3 are in the “neutral position” shown in FIG. 2, and the AMT is in the neutral state. In the “odd stage state”, as shown in FIG. 11, the selected shift forks F1 to F3 are on the odd stage side, and the AMT is any one of the first speed, the third speed, and the fifth speed. In the “even stage state”, the selected shift forks F1 to F3 are on the even stage side, and the AMT is any one of the second speed, the fourth speed, and the reverse.

  As shown in FIG. 13, an “odd step forming groove” for forming an odd number of steps is formed apart from the neutral line from the first inclined portion 40c, the odd number of step portions 40d, and the second inclined portion 40e. Yes. Further, an “even-numbered step forming groove” for forming an even-numbered step and a reverse is formed away from the neutral line from the third inclined portion 40g, the even-numbered step portion 40h, and the fourth inclined portion 40i.

  As shown in FIG. 13, the formation angle in the circumferential direction from the start point to the end point of the “odd step formation groove” is different from the formation angle in the circumferential direction from the start point to the end point of the “even step formation groove”. In the present embodiment, the formation angle in the circumferential direction from the start point to the end point of the “odd step formation groove” is smaller than the formation angle in the circumferential direction from the start point to the end point of the “even step formation groove”.

  Moreover, the inclination angle from the neutral line of the 1st inclination part 40c differs from the inclination angle from the neutral line of the 3rd inclination part 40g. Furthermore, the inclination angle from the neutral line of the second inclined portion 40e is different from the inclination angle from the neutral line of the fourth inclined portion 40i. In the present embodiment, the inclination angle from the neutral line of the first inclined part 40c is larger than the inclination angle from the neutral line of the third inclined part 40g. In addition, the inclination angle from the neutral line of the second inclined part 40e is larger than the inclination angle from the neutral line of the fourth inclined part 40i.

  As shown in FIG. 5, a cylindrical rotary member 30 is attached to the outer peripheral side of the shift member 40 so as to be rotatable relative to the shift member 40 and movable in the axial direction. In other words, the rotating member 30 is attached to the housing 10 so as to be rotatable and movable in the axial direction.

  As shown in FIG. 4, one side in the axial direction of the rotating member 30 is an odd-numbered step side, and the other side in the axial direction of the rotating member 30 is an even-numbered step side. Note that the directions of the odd-numbered steps and the even-numbered steps of the rotating member 30 and the shift member 40 are the same. As shown in FIGS. 3, 4, 5, and 8, on the outer circumferential surface of the rotating member 30, the even-numbered step recognition protrusion 30 y and the neutral step are spaced from the odd-numbered step side to the even-numbered step side with an axial interval. The recognition protrusion 30x and the odd-numbered stage recognition protrusion 30z are formed in parallel.

  As shown in FIG. 14, the neutral recognition protrusions 30 x are arranged at a predetermined angle in the circumferential direction of the rotating member 30, and the first neutral recognition protrusion 30 x 1, the second neutral recognition protrusion 30 x 2, the third neutral recognition protrusion 30 x 3, and the fourth neutral position. The recognition protrusions 30x4 are formed in this order. These protrusions are formed on the outer periphery of the plurality of sets and the rotating member 30. In the present embodiment, three sets of these protrusions are formed, and the angle from the first neutral recognition protrusion 30x1 to the fourth neutral recognition protrusion 30x4 is 120 °.

  An angle between the first neutral recognition protrusion 30x1 and the second neutral recognition protrusion 30x2 is a first angle a. The angle between the second neutral recognition protrusion 30x2 and the third neutral recognition protrusion 30x3 is the second angle b. The angle between the third neutral recognition protrusion 30x3 and the fourth neutral recognition protrusion 30x4 is the third angle c. The angle between the fourth neutral recognition protrusion 30x4 and the first neutral recognition protrusion 30x1 is a fourth angle d. The first angle a, the second angle b, the third angle c, and the fourth angle d are different from each other.

  The even-numbered step recognition protrusion 30y and the odd-numbered step recognition protrusion 30z are also formed at a predetermined angle in the circumferential direction of the rotating member 30, like the neutral recognition protrusion 30x described above. The first to fourth protrusions of the neutral recognition protrusion 30x, the even-numbered stage recognition protrusion 30y, and the odd-numbered stage recognition protrusion 30z are formed at the same position in the circumferential direction.

  As shown in FIGS. 4 and 8, a plurality of engaging portions 30i, 30j, and 30k are formed on the outer peripheral surface of the rotating member 30 at a certain angle. In the present embodiment, the engaging portions 30 i, 30 j, and 30 k are plate-like and formed to protrude in the radial direction of the rotating member 30. Further, three first to third engaging portions 30 i, 30 j, 30 k are formed on the outer peripheral surface of the rotating member 30 at 120 ° intervals.

  As shown in FIGS. 3, 6, and 8, a plurality of latch gears 30 b are continuously formed on the outer peripheral surface of the rotating member 30. In the present embodiment, twelve latch gears 30b are formed on the outer peripheral surface of the rotating member 30 at a predetermined interval. As shown in FIG. 6, one latch gear 30 b extends in the direction inclined from the radial direction of the rotating member 30, the engaging surface 30 c extending in the radial direction along the axial direction of the rotating member 30, The top part has the inclined surface 30d connected with the top part of the engaging surface 30c.

  The formation position in the circumferential direction of the latch gear 30b corresponds to the formation positions of the first to fourth protrusions of the neutral recognition protrusion 30x, the even-numbered stage recognition protrusion 30y, and the odd-numbered stage recognition protrusion 30z. That is, as shown in FIG. 6, the latch gear 30 b is formed on the outer peripheral surface of the rotating member 30 with the above-described first angle a, second angle b, third angle c, and fourth angle d. Has been.

  The detent member 50 is attached to the housing 10. As shown in FIGS. 3, 5, 6, and 8, the detent member 50 is engaged with the engagement surface 30c of the latch gear 30b. As shown in FIG. 5, the detent member 50 includes a housing 50a, a pawl member 50b, and an urging member 50c. The housing 50 a has a bottomed cylindrical shape that opens to the latch gear 30 b side, and is attached to the housing 10. The pawl member 50b has a hemispherical tip, and the tip protrudes from the opening of the housing 50a and is slidably mounted in the housing 50a. The urging member 50c is a coil spring or the like, and urges the pawl member 50b toward the latch gear 30b.

  As shown in FIG. 6, the front end of the pawl member 50b is in contact with and engaged with the engagement surface 30c of the latch gear 30b. For this reason, the rotation of the rotation member 30 in the reverse rotation direction is restricted. The tip of the pawl member 50b is in contact with the inclined surface 30d of the latch gear 30b. When the rotating member 30 rotates in the forward rotation direction, the pawl member 50b is pressed by the inclined surface 30d and slides toward the housing 50a, and gets over the latch gear 30b. Thus, the latch gear 30b and the detent member 50 restrict the rotation of the rotating member 30 only in the reverse rotation direction with respect to the housing 10 and allow the rotation of the rotating member 30 only in the forward rotation direction with respect to the housing 10. It functions as a “clutch”.

  The rotating member 30 is positioned in the rotational direction by the latch gear 30b and the detent member 50.

  As shown in FIGS. 5 and 7, a shift pin 30 e that protrudes to the inner peripheral side of the rotating member 30 and engages with the shift groove 40 a of the shift member 40 is attached to the inner peripheral surface of the rotating member 30.

  As shown in FIG. 5 and FIG. 6B, a key recess 40 m is formed in the outer peripheral surface of the shift member 40. A block-like key 41 is attached to the key recess 40 m so as to be slidable in the radial direction of the shift member 40. As shown in FIG. 6B, an engagement surface 41 a extending in the radial direction of the rotating member 30 along the axial direction is formed on one side surface of the key 41. On the side surface of the key 41 opposite to the engagement surface 41a, there is an inclined surface 41b inclined from the radial direction of the rotating member 30 along the axial direction. A biasing member 42 such as a coil spring is disposed between the bottom of the key recess 40 m and the key 41.

  As shown in FIG. 5 and FIG. 6B, a key engaging recess 30 f that engages with the key 41 is formed in the inner peripheral surface of the rotating member 30. As shown in FIG. 6B, the key engagement recess 30 f has a shape corresponding to the key 41. That is, the key engagement recess 30 f extends in the radial direction along the axial direction of the rotating member 30, and an engaged surface 30 g that contacts and engages with the engagement surface 41 a of the key 41 is formed. The key engaging recess 30f has an inclined surface 30h that faces the engaged surface 30g, is inclined from the radial direction along the axial direction of the rotating member 30, and contacts the inclined surface 41b of the key 41. . The crossing angle between the inclined surface 30h and the bottom surface of the key engaging recess 30f is an obtuse angle. The engaged surface 30 g is formed on the forward rotation side with respect to the shift member 40, and the inclined surface 30 h is formed on the reverse rotation side with respect to the shift member 40. As shown in FIG. 5, the width dimension in the axial direction of the shaft 20 of the key engaging recess 30 f is larger than the width dimension in the axial direction of the key 41. For this reason, the rotation member 30 is movable in the axial direction with respect to the shift member 40.

  Since the engagement surface 41 a of the key 41 and the engaged surface 30 g of the rotation member 30 are engaged, the rotation of the rotation member 30 relative to the shift member 40 in the reverse rotation direction is restricted. Since the inclined surface 41b of the key 41 is in contact with the inclined surface 30h of the rotating member 30, the key 41 is moved to the bottom side of the key recess 40m as the shift member 40 rotates relative to the rotating member 30 in the reverse direction. And is accommodated in the key recess 40m, and the rotary member 30 rotates relative to the shift member 40 in the forward rotation direction. As described above, the key 41 and the key engaging recess 30f restrict the rotation of the shift member 40 only in the forward rotation direction relative to the rotation member 30, and allow the shift member 40 to rotate only in the reverse rotation direction relative to the rotation member 30. It functions as a “first one-way clutch”.

  From the position where the key 41 is engaged with the key engagement recess 30f, the shift member 40 is moved from the position where the shift member 40 is reversely rotated with respect to the rotation member 30 by a predetermined angle (less than 180 ° in this embodiment). Even if the key 41 is rotated in the forward rotation direction, the key 41 is not engaged with the key engagement recess 30f, so that the rotating member 30 does not rotate in the forward rotation direction. In other words, the “first one-way clutch” is configured to be capable of backlash by a predetermined angle (less than 180 ° in this embodiment) with respect to the rotation of the shift member 40 in the positive rotation direction with respect to the rotation member 30.

  When the shift member 40 rotates relative to the rotation member 30, the shift member 40 is engaged with the shift groove 40a of the shift member 40 because the shift pin 30e fixed to the rotation member 30 is engaged with the rotation member 30. Moves in the axial direction.

  As shown in FIG. 4, the first detection unit 75 is disposed so as to face the detected unit 20 x formed on the shaft 20. The detected part 20x is a plurality of permanent magnets provided in the shaft 20 with different magnetic fields alternately in the circumferential direction, or an outer peripheral surface of the shaft 20 magnetized so as to have different magnetic fields alternately in the circumferential direction. The first detection unit 75 is a sensor that detects the rotation angle of the shaft 20 (shift member 40). In the present embodiment, the first detection unit 75 is a magnetic sensor such as a Hall IC, and is a sensor that reads a change in the magnetic field of the detected unit 20x as the shaft 20 rotates. The first detection unit 75 is communicably connected to the AMT-ECU 113 and outputs detected rotation angle information of the shaft 20 to the AMT-ECU 113.

  The AMT-ECU 113 can recognize the rotation angle of the motor 70 based on the rotation angle information of the shaft 20 output from the first detection unit 75, and can further recognize the rotation angle of the shift member 40. .

  As shown in FIG. 4, the housing 10 is provided with a second detection unit 76 so as to face the recognition protrusions 30x, 30Y, and 30z. The second detection unit 76 is a sensor that detects the position of the rotating member 30 in the axial direction and detects the rotation angle of the rotating member 30. The second detection unit 76 is a proximity sensor or a mechanical sensor that recognizes the presence of the recognition protrusions 30x, 30Y, and 30z. The second detection unit 76 is communicably connected to the AMT-ECU 113, and outputs a detection signal to the AMT-ECU 113.

  When the rotary member 30 is positioned in the rotational direction by the latch gear 30b and the detent member 50, any of the recognition protrusions 30x, 30Y, and 30z faces the second detection unit 76. As described above, the recognition protrusions 30x, 30Y, and 30z are formed on the outer peripheral surface of the rotating member 30 with the first angle a, the second angle b, the third angle c, and the fourth angle d.

  When the rotating member 30 is in the neutral position, the odd-numbered stage side, or the even-numbered stage side with respect to the axial direction of the axis, the second detection unit 76 detects any of the recognition protrusions 30x, 30Y, and 30z. Therefore, the AMT-ECU 113 can detect the completion of movement in the axial direction to any of the neutral position, the odd-numbered stage side, and the even-numbered stage side of the rotating member 30. A method in which the AMT-ECU 113 detects whether the rotating member 30 is in the neutral position, the odd-numbered stage side, or the even-numbered stage side will be described later.

  As shown in FIG. 3, the first shift fork member 61 is disposed on the outer peripheral side of the rotating member 30. The first shift fork member 61 includes a shaft portion 61a, an engaged portion 61b provided at the base end portion of the shaft portion 61a, and a shift fork F1 provided at the tip of the shaft portion 61a. The shaft portion 61a is attached to the housing 10 so as to be movable in the axial direction.

  An engagement recess 61c that can be engaged with or detached from the first to third engagement portions 30i, 30j, 30k is formed in the engaged portion 61b. The shift fork F1 has an arc shape and is engaged with the first engagement groove S1-1 shown in FIG.

  Although not shown, the second shift fork member 62 and the third shift fork member 63 having the same structure as the first shift fork member 61 are disposed on the outer peripheral side of the rotating member 30 from the first shift fork member 61. A predetermined angle is attached to the housing 10 so as to be slidable in the axial direction. As shown in the alternate long and short dash line in FIG. 4B and FIG. 8A, the first engaged portion 61b, the second engaged portion 62b, and the third engaged portion 63b are related to the axial direction. At the positions where the first to third engaging portions 30i, 30j, and 30k are formed, the outer peripheral portion of the rotating member 30 is disposed at a predetermined angle. The first shift fork member 61, the second shift fork member 62, and the third shift fork member 63 move in the axial direction, and the force applied to the first shift fork member 61, the second shift fork member 62, and the third shift fork member 63 is applied to the first sleeve S 1 and the second shift fork member 63, respectively. By transmitting to the sleeve S2 and the third sleeve S3, the first sleeve S1, the second sleeve S2, and the third sleeve S3 are moved, respectively, and the AMT first selection mechanism 100, the second selection mechanism 200, respectively. The third selection mechanism 300 is activated.

  A driven gear 82 is fixed to the shaft 20. The motor 70 is a motor whose rotation angle can be controlled. The motor 70 is driven with a rotation angle controlled by an AMT-ECU 113 (shown in FIG. 1). A drive gear 81 that meshes with a driven gear 82 is attached to a rotating shaft 71 of the motor 70. The number of teeth of the driven gear 82 is greater than the number of teeth of the drive gear 81, and the rotation of the motor 70 is decelerated and transmitted to the shaft 20.

[Select operation]
When the motor 70 rotates in the reverse direction and the shaft 20 rotates in the forward direction, as described above, the “second one-way clutch” (the latch gear 30b and the detent member 50) rotates the rotating member 30 in the forward rotation direction with respect to the housing 10. The “first one-way clutch” (key 41, key engaging recess 30f) restricts the rotation of the rotating member 30 in the reverse rotation direction with respect to the shift member 40. Rotate in the direction of rotation.

  Thus, each time the rotating member 30 rotates in the forward rotation direction and the pawl member 50b gets over the latch gear 30b, any one of the first engaging portion 30i to the third engaging portion 30k becomes the first engaged portion. A state where the first shift fork member 61 is selected (shown in FIG. 9A) is engaged with the coupling portion 61b, and any one of the first engagement portion 30i to the third engagement portion 30k is the second A state in which the second shift fork member 62 is selected by engaging with the engaged portion 62b (shown in FIG. 9B), any one of the first engaging portion 30i to the third engaging portion 30k is A state in which the third shift fork member 63 is selected by engaging with the third engaged portion 63b (shown in FIG. 9C), and any of the first engaging portion 30i to the third engaging portion 30k. Is in a non-selected state (shown in FIG. 9D) that is not engaged with any of the first engaged portion 61b to the third engaged portion 63b. The state of Zureka.

  In any of the states shown in FIGS. 9A to 9D, any one of the neutral recognition protrusions 30x1 to 4 faces the second detection unit 76, and the second detection unit 76 recognizes any one of the neutral recognitions. The protrusions 30x1 to 4 are detected. A method for detecting the rotation angle of the rotating member 30 and detecting whether the rotating member 30 is in one of the states shown in FIGS.

  As shown in FIG. 9D, when the engaging portion 30i passes through the engaged portions 61b, 62b, and 63b, the next engaging portion 30j is connected to the engaged portions 61b, 62b, and 63b. Since it is waiting in front, the engaging part 30j can be engaged with the engaged parts 61b, 62b, 63b with a small rotation angle of the rotating member 30.

  In the “select operation”, the shift member 40 and the rotation member 30 are integrally rotated in the normal rotation direction, and the shift member 40 and the rotation member 30 do not rotate relative to each other, so that the rotation member 30 does not slide in the axial direction.

[Shift operation]
When the motor 70 rotates in the forward direction and the shaft 20 rotates in the reverse direction, as described above, the “second one-way clutch” (the latch gear 30b and the detent member 50) regulates the rotation of the rotating member 30 in the reverse rotation direction. The “first one-way clutch” (key 41, key engaging recess 30f) allows the rotation of the shift member 40 in the reverse rotation direction with respect to the rotation member 30, so that only the shift member 40 is in a state where the rotation member 30 is stopped. The shift member 40 rotates in the reverse rotation direction, and the shift member 40 rotates relative to the rotation member 30 in the reverse rotation direction.

  As described above, when the shift member 40 rotates relative to the rotation member 30 in the reverse rotation direction, the shift pin 30e fixed to the rotation member 30 is engaged with the shift groove 40a, and thus the shift groove 40a of the shift pin 30e. The rotary member 30 slides in the axial direction with the movement relative to. When the rotary member 30 slides in the axial direction in a state where any of the first shift fork member 61 to the third shift fork member 63 is selected, the selected first shift fork member 61 to third shift fork member 63 moves in the axial direction, and the corresponding shift forks F1 to F3 move in the axial direction, and the shift is executed.

  The AMT-ECU 113 can recognize the rotation angle of the shift member 40 based on the rotation angle information of the motor 70 output from the first detection unit 75.

(Outline of the present invention)
The outline of the present invention will be described below with reference to FIGS. When any of the engaging portions 30i, 30j, and 30k is engaged with any of the engaged portions 61b, 62b, and 63b (selection complete state), (A) to (B) in FIG. As shown, any one of the neutral recognition protrusions 30x, the even-numbered stage recognition protrusions 30y, and the odd-numbered stage recognition protrusions 30z faces the second detection unit 76.

  When the shift pin 30e is in the first connection portion 40b or the second connection portion 40f ((1) in FIG. 13) and the rotating member 30 is in the neutral position (FIG. 16 (A)), the neutral recognition protrusion 30x is Opposing to the second detection unit 76, the second detection unit 76 outputs an ON signal to the ATM-ECU 113. When the shift pin 30e is on the odd-numbered step portion 40d ((2) in FIG. 13) and the rotating member 30 is on the odd-numbered step side (FIG. 16B), the odd-numbered step recognition protrusion 30z is the second detection portion 76. The second detection unit 76 outputs an ON signal to the ATM-ECU 113. Further, when the shift pin 30e is in the even-numbered step portion 40h ((3) in FIG. 13) and the rotating member 30 is in the even-numbered step side (FIG. 16C), the even-numbered step recognition protrusion 30y is the second detection portion 76. The second detection unit 76 outputs an ON signal to the ATM-ECU 113.

  While the shift pin 30e in the first connection part 40b moves to the odd-numbered step part 40d, when the rotating member 30 in the neutral position moves to the odd-numbered step side, the second detection unit 76 detects which recognition protrusion 30x, There is an OFF region ((4) in FIG. 13) that does not oppose 30y and 30z and outputs the OFF signal without the second detection unit 76 outputting the ON signal.

  Similarly, when the rotation member 30 on the odd-numbered stage side moves to the neutral position while the shift pin 30e on the odd-numbered stage section 40d moves to the second connection section 40f, the second detection section 76 recognizes which There is an OFF region ((4) in FIG. 13) that does not face the protrusions 30x, 30y, and 30z, and that the second detector 76 outputs an OFF signal without outputting an ON signal.

  Similarly, when the rotation member 30 in the neutral position moves to the even-numbered step side while the shift pin 30e in the second connection portion 40f moves to the even-numbered step portion 40h, the second detection unit 76 recognizes which one of the recognition positions. There is an OFF region ((5) in FIG. 13) that does not face the protrusions 30x, 30y, and 30z, and the second detection unit 76 outputs an OFF signal without outputting an ON signal.

  Similarly, when the rotation member 30 on the even step side moves to the neutral position while the shift pin 30e on the even step portion 40h moves to the first connection portion 40b, the second detection portion 76 recognizes which one of them. There is an OFF region ((5) in FIG. 13) that does not face the protrusions 30x, 30y, and 30z, and that the second detection unit 76 does not output an ON signal and outputs an OFF signal.

  As shown in FIG. 13, the formation angles in the circumferential direction of the “odd-numbered step forming grooves” and the “even-numbered step forming grooves” are different. For this reason, when the shift member 40 rotates once (360 °), the shift member 40 at the neutral position moves to the odd-numbered stage side and returns to the neutral position again (see FIG. 13). Is smaller than the rotation angle b of the shift member 40 in which the rotating member 30 in the neutral position moves to the even-numbered stage side and returns to the neutral position again. The AMT-ECU 113 detects the rotation angle a and the rotation angle b described above based on the rotation angle of the shift member 40 detected by the first detection unit 75 and the ON signal and OFF signal detected by the second detection unit 76. be able to.

  That is, the AMT-ECU 113 recognizes in advance the shape of the shift groove 40a shown in FIG. Then, the AMT-ECU 113 moves when the rotating member 30 in the neutral position moves to the odd-numbered stage side and returns to the neutral position again, and when the rotating member 30 in the neutral position moves to the even-numbered stage side and returns to the neutral position again. In each case, the correspondence between the rotation angle of the shift member 40 detected by the first detection unit 75 and the ON signal and OFF signal detected by the second detection unit 76 is stored in the “storage unit”.

  Then, the AMT-ECU 113 calculates the total rotation angle (40c + 40e) of the shift member 40 in the state in which the OFF signal is output when the rotating member 30 in the neutral position moves to the odd-numbered stage side and returns to the neutral position again. ) And the total rotation angle (40g + 40i) of the shift member 40 in the state where the OFF signal is output when the rotation member 30 in the neutral position moves to the even-numbered stage and returns to the neutral position again. Thus, it can be recognized whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side.

(Initial position detection processing)
Next, the “initial position detection process” executed by the AMT-ECU 113 will be described using the flowcharts shown in FIGS. 13 and 15. The “initial position detection process” is executed before the shift operation device 90 is shipped, when the shift operation device 90 is serviced, or when traveling for a predetermined time or a predetermined distance. When the “initial position detection process” starts, the program proceeds to S111.

  In S <b> 111, the AMT-ECU 113 drives and controls the motor 70 to rotate the shaft 20 (shift member 40) forward so that one set of the neutral recognition protrusions 30 x 1 to 30 x 4 passes through the second detection unit 76. In the state in which the rotating member 30 is positioned at the neutral position, the AMT-ECU 113 has the neutral recognition protrusion 30x facing the second detection unit 76 as shown in FIG.

  When the rotating member 30 rotates forward, as shown in FIG. 14, a plurality of neutral recognition protrusions 30x are formed at different angles in the circumferential direction, so that the ON signal from the second detection unit 76 is sent to the AMT-ECU 113. And the OFF signal is repeatedly input. Then, the rotation angle of the rotating member 30 detected by the first detection unit 75 and the ON signal and OFF signal output by the second detection unit 76 are stored in association with the “storage unit”. Even when the rotating member 30 is not positioned at the neutral position, when S111 is executed and the shift member 40 is rotated in the forward rotation direction, the shift is performed until the key 41 is engaged with the key engaging recess 30f. When the member 40 and the rotating member 30 are relatively rotated, the shift pin 30e slides in the shift groove 40a, and the rotating member 30 is positioned at the neutral position. When S111 ends, the program proceeds to S112.

  In S <b> 112, the AMT-ECU 113 analyzes the relationship between the rotation angle of the shift member 40 stored in the “storage unit” and the ON signal and the OFF signal output by the second detection unit 76, thereby rotating the rotating member 30. The select position which is the position in the rotation direction is detected, and the detection result is stored in the “storage unit”.

  This will be described in detail below. As shown in FIG. 14, the first angle a, the second angle b, the third angle c, and the fourth angle d are different unique angles. The rotation angle of the rotating member 30 that is not detected (OFF) after the second detecting unit 76 detects (ON) the neutral recognition protrusions 30x1, 30x2, and 30x3 differs depending on the rotational position of the rotating member 30. For this reason, the AMT-ECU 113 can detect the rotational position of the rotating member 30 and can detect which of the states (A) to (D) of FIG. When S112 ends, the program proceeds to S113.

  In S <b> 113, the AMT-ECU 113 controls the motor 70 to rotate, thereby causing the shaft 20 to rotate in the forward direction, and performs a selection operation for selecting any one of the shift fork members 61 to 63. When S113 ends, the program proceeds to S114.

  In S114, when the AMT-ECU 113 determines that the rotating member 30 is located at the neutral position based on the detection signals from the first detection unit 75 and the second detection unit 76 (S114: YES), When the program proceeds to S116 and it is determined that the rotating member 30 is not in the neutral position (S114: NO), the program proceeds to S115.

  In S <b> 115, the AMT-ECU 113 drives and controls the motor 70 to reversely rotate the shaft 20 and position the rotating member 30 in the neutral position. When S115 ends, the program proceeds to S116.

  In S116, the AMT-ECU 113 performs the shift operation by rotating the shaft 20 (shift member 40) in the reverse direction by 360 ° by controlling the motor 70 to be driven. At this time, the rotation angle of the shift member 40 detected by the first detection unit 75 and the ON signal and OFF signal output by the second detection unit 76 are stored in association with the “storage unit”. When S116 ends, the program proceeds to S117.

  In S <b> 117, the AMT-ECU 113 analyzes the relationship between the rotation angle of the shift member 40 stored in the “storage unit” and the ON signal and the OFF signal output by the second detection unit 76, thereby rotating the rotating member 30. The position in the shift direction is detected, and the detection result is stored in the “storage unit”.

  This will be described in detail below. The formation angle in the circumferential direction from the start end to the end of the “odd step forming groove” is different from the formation angle in the circumferential direction from the start end to the end of the “even step forming groove”. For this reason, the AMT-ECU 113 calculates the total rotation angle (40c + 40e) of the shift member 40 in the state where the OFF signal is output and the total rotation angle (40c + 40e) of the shift member 40 in the state where the OFF signal is output ( By comparing 40g + 40i), it is possible to recognize whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side.

  Further, when the shift pin 30e moves from the first connection portion 40b to the odd-numbered step portion 40d via the first inclined portion 40c, the rotation angle (40c in FIG. 13) of the shift member 40 in the state where the OFF signal is output is Is a unique angle. Further, when the shift pin 30e moves from the second connection portion 40f to the even-numbered step portion 40h via the third inclined portion 40g, the rotation angle (40g) of the shift member 40 in a state where the OFF signal is output is unique. Is an angle. Thus, when the shift pin 30e moves from any one of the connection portions 40b and 40c to any odd-numbered step portion 40d or even-numbered step portion 40h, the shift member 40 in a state where an OFF signal is output. Since the rotation angles (40c or 40g) are different, the AMT-ECU 113 can determine whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side.

  When the rotating member 30 at the odd-numbered position moves to the neutral position, an OFF signal is output (the shift pin 30e is moving the second inclined portion 40e), and when the ON signal is output again. Therefore, it is determined that the shift pin 30e is positioned at the second connection portion 40f and the rotating member 30 is positioned at the neutral position.

  Similarly, when the rotating member 30 in the even-numbered position moves to the neutral position, an OFF signal is output (the shift pin 30e is moving the fourth inclined portion 40i), and the ON signal is output again. In addition, it is determined that the shift pin 30e is positioned at the first connection portion 40b and the rotating member 30 is positioned at the neutral position. When S117 ends, the program proceeds to S118.

  In S118, the AMT-ECU 113 drives and controls the motor 70 to reversely rotate the shaft 20 (shift member 40), thereby moving the rotating member 30 to the neutral position and bringing the AMT into a neutral state. When S118 ends, the “initial position detection process” ends.

(Shift control)
Next, “shift control” executed by the AMT-ECU 113 will be described with reference to the flowchart shown in FIG. 10 and FIG. 11. FIG. 11 is a conceptual diagram showing the relationship between the positions of the shift forks F1 to F3 and the gear positions.

  When the vehicle 1000 is ready to travel, the process proceeds to S11. If the AMT-ECU 113 determines in S11 that there is a “shift request” (S11: YES), the program proceeds to S12, and if it is determined that there is no “shift request” (S11: NO). , S11 is repeated. The AMT-ECU 11 determines that the traveling state of the vehicle 1000 including the throttle opening and the speed of the vehicle 1000 has exceeded a shift line that represents the relationship between the throttle opening and the speed. When a shift lever (not shown) is operated, it is determined that there is a “shift request”. In S11, one of the shift fork members 61 to 63 is selected, and one of the gear positions is formed.

  In S12, the AMT-ECU 113 controls the clutch actuator 129 to drive the clutch C so that the transmission torque of the clutch C is 0, and the clutch C is disengaged. When S12 ends, the program proceeds to S13.

  If the AMT-ECU 113 determines in S13 that the “shift request” is either a two-step up shift or a two-step down shift (S13: YES), the program proceeds to S31, and the “shift request” If it is determined that it is not one of the two-stage upshift and the two-stage downshift (S13: NO), the program proceeds to S21. Note that the two-stage upshift means that when the upshift is performed from the first speed to the third speed ((1) in FIG. 11), when the upshift is performed from the second speed to the fourth speed ((2) in FIG. 11), from the third speed. This is a case where the up-shift is performed to the fifth speed ((3) in FIG. 11). The two-stage downshift means that when downshifting from 5th speed to 3rd speed ((4) in FIG. 11), downshifting from 4th speed to 2nd speed ((5) in FIG. 11), from 3rd speed. This is the case of downshifting to the first speed ((6) in FIG. 11).

  In S21, when the AMT-ECU 113 determines that the “select operation” is necessary (S21: YES), the program proceeds to S22, and when it is determined that the “select operation” is not necessary (S21). : NO), the program proceeds to S26. When the AMT-ECU 113 shifts up from the second speed to the third speed ((7) in FIG. 11), the AMT-ECU 113 shifts up from the fourth speed to the fifth speed ((8) in FIG. 11). When downshifting ((9) in FIG. 11), when downshifting from the third speed to the second speed ((10) in FIG. 11), when shifting from the first speed ((11) in FIG. 11), reverse When it is necessary to reselect the shift fork members 61 to 63 as in the case of shifting to the first speed ((12) in FIG. 11), it is determined that the “select operation” is necessary.

  In S22, the AMT-ECU 113 drives and controls the motor 70 to reversely rotate the shaft 20, thereby positioning the shift pin 30e at the first connection portion 40b or the second connection portion 40f and selecting the selected shift fork. The members 61 to 63 are positioned at the “neutral position”, and the control for setting the AMT to the neutral state is started. When S22 ends, the program proceeds to S23.

  In S23, if the AMT-ECU 113 determines that the AMT is in the neutral state based on the detection signals from the first detection unit 75 and the second detection unit (S23: YES), the program proceeds to S24. If it is determined that the AMT is not in the neutral state (S23: NO), the process of S23 is repeated. Note that the method by which the AMT-ECU 113 determines that the AMT has reached the neutral state, that is, the method for detecting the neutral position of the rotating member 30, is the same as the method of S112 in FIG. 15 described above.

  In S <b> 24, the AMT-ECU 113 controls the drive of the motor 70 to rotate the shaft 20 in the forward direction, and selects any one of the shift fork members 61 to 63 corresponding to the “shift request” gear stage. To start. When S24 ends, the program proceeds to S25.

  If the AMT-ECU 113 determines in S25 that the “select operation” has been completed based on detection signals from the first detection unit 75 and the second detection unit 76 (S25: YES), the program is transferred to S26. If it is determined that the “select operation” has not been completed (S25: NO), the process of S25 is repeated. Note that the method in which the AMT-ECU 113 detects the position of the rotating member 30 in the rotational direction is the same as the method of S116 in FIG. 15 described above.

  In S26, the AMT-ECU 113 drives and controls the motor 70 to rotate the shaft 20 in the reverse direction, so that the shift member 40 is rotated to the shift position (odd number side or even number side) where the shift pin 30e is “shift request”. The “shift operation” is started.

  As shown in FIG. 13, since the first connection portion 40b and the second connection portion 40f are not inclined with respect to the neutral line, the shift pin 30e slides on the first connection portion 40b and the second connection portion 40f. As long as the rotation member 30 and the selected shift fork members 61 to 63 are not moved in the axial direction. Further, even if the shift member 40 is rotated in the positive rotation direction by the above-described extra angle, the shift member 40 is rotated forward with respect to the rotary member 30 by the key 41 and the key engagement recess 30f which are the “first one-way clutch”. Since the backlash can be performed at a predetermined angle with respect to the rotation of the direction, the rotation member 30 does not rotate with the rotation of the shift member 40 in the forward rotation direction. When S26 ends, the program proceeds to S51.

  In S31, the AMT-ECU 113 drives and controls the motor 70 to reversely rotate the shaft 20, so that the shift pin 30e is positioned at the first connection portion 40b or the second connection portion 40f, and the selected shift fork is selected. The members 61 to 63 are positioned at the “neutral position”, and the control for setting the AMT to the neutral state is started. For example, in the case of upshifting from the first speed to the third speed, the shift pin 30e in the odd-numbered step portion 40d is moved to the second connection portion 40f to bring the AMT into the neutral state. When S31 ends, the program proceeds to S32.

  In S32, if the AMT-ECU 113 determines that the AMT is in the neutral state based on the detection signals from the first detection unit 75 and the second detection unit 76 (S32: YES), the program proceeds to S33. If it is determined that the AMT is not in the neutral state (S32: NO), the process of S32 is repeated. Note that the method by which the AMT-ECU 113 determines that the AMT has reached the neutral state, that is, the method for detecting the neutral position of the rotating member 30, is the same as the method of S112 in FIG. 15 described above.

  In S33, the AMT-ECU 113 controls to drive the motor 70 to rotate the shaft 20 in the normal direction and to make the rotating member 30 non-selected ((D) in FIG. 9). When S33 ends, the program proceeds to S34.

  If the AMT-ECU 113 determines in S34 that the rotating member 30 is in a non-selected state based on the detection signals from the first detection unit 75 and the second detection unit 76 (S34: YES), the program is executed. Proceeding to S35, if it is determined that the rotating member 30 is not in a non-selected state (S34: NO), the process of S34 is repeated. Note that the method by which the AMT-ECU 113 determines that the rotating member 30 is in a non-selected state is the same as the method of S116 in FIG. 15 described above.

  In S35, the AMT-ECU 113 drives and controls the motor 70 to rotate the shaft 20 in the reverse direction so that the shift member 40 is rotated to the preparation position where the shift pin 30e is in the neutral position before the “shift request” gear position. Start control. For example, in the case of upshifting from the first speed to the third speed, the shift pin 30e positioned at the second connection portion 40f in S31 is positioned at the first connection portion 40b that is the preparation position before the odd-numbered stage side. The shift member 40 is rotated. When S35 ends, the program proceeds to S36.

  In S36, when the AMT-ECU 113 determines that the shift member 40 is in the preparation position and the AMT is in the neutral state based on the detection signals from the first detection unit 75 and the second detection unit 76. (S36: YES), the program proceeds to S24, and if it is determined that the shift member 40 is not in the preparation position (S36: NO), the process of S36 is repeated. Note that the method of determining that the shift member 40 is in the preparation position and the AMT is in the neutral state by the AMT-ECU 113 is the same as the method of S112 in FIG. 15 described above.

  If the AMT-ECU 113 determines in S51 that the “shift operation” has been completed based on detection signals from the first detection unit 75 and the second detection unit 76 (S51: YES), the program is transferred to S52. If it is determined that the “shift operation” has not been completed (S51: NO), the process of S51 is repeated. Note that the method by which the AMT-ECU 113 determines that the shift operation has been completed is the same as the method of S112 in FIG. 15 described above.

  In S52, the AMT-ECU 113 controls the clutch actuator 129 so as to maximize the transmission torque of the clutch C and connect the clutch C. When S52 ends, the program returns to S11.

(Effect of this embodiment)
As is clear from the above description, the single motor 70 rotates the shift member 40 in the forward direction, thereby rotating the shift member 40 and the rotation member 30 together, thereby rotating the rotation member 30 into a plurality of shift fork members 61. -63 (transmission member) is engaged with one shift fork member 61-63, and a "select operation" for selecting one shift fork member 61-63 among the plurality of shift fork members 61-63 is performed. Then, the single motor 70 rotates the shift member 40 in the reverse direction, thereby rotating the rotation member 30 and the shift member 40 relative to each other to move the rotation member 30 in the axial direction. A “shift operation” is performed to move 63 in the axial direction. As described above, since both the “select operation” and the “shift operation” can be performed by the single motor 70, it is possible to provide the shift operation device 90 of the automatic transmission that can suppress the increase in the number of parts. Can do.

  As described above, in the present embodiment, since two or more motors conventionally required for performing the “select operation” and the “shift operation” can be reduced to a single motor 70, the motor is attached to the motor. Various control equipment such as an ECU, a driver, and a sensor can be reduced. For this reason, the manufacturing cost of the shift operation device 90 can be reduced, the mountability of the shift operation device 90 on the vehicle becomes good, and the weight of the vehicle can be reduced.

  Further, as shown in FIG. 13, the “odd step forming groove” and the “even step forming groove” are formed in a non-identical manner. Then, as shown in FIG. 4, on the outer peripheral surface of the rotating member 30, an even-numbered step recognition protrusion 30 y (even-numbered step recognition portion), a neutral recognition protrusion 30 x (neutral recognition portion), Odd step recognition protrusions 30z (odd step recognition portions) are formed. As shown in FIG. 16, the single second detection unit 76 is one of the even-numbered step recognition protrusion 30 y, the neutral recognition protrusion 30 x, and the odd-number step recognition protrusion 30 z in accordance with the movement of the rotating member 30 in the axial direction. Recognize

  As shown in FIG. 13, the “odd step forming groove” and the “even step forming groove” are formed non-identical, that is, unbalanced. As a result, when the rotation member 30 moves in the axial direction due to relative rotation of the shift member 40 and the rotation member 30, the AMT-ECU 113 (in S112 of FIG. 15, S23, S51, S32, and S36 of FIG. The position detection unit) analyzes the correspondence between the rotation angle of the shift member 40 detected by the first detection unit 75 and the presence / absence of the recognition units 30x, 30y, and 30z detected by the second detection unit 76. It can be recognized whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side.

  For this reason, the single second detector 76 can determine whether the rotating member 30 is positioned on the odd-numbered stage side or the even-numbered stage side, that is, whether or not the shift operation is completed. The increase in the number of points can be suppressed, and the cost of the shift operation device 90 can be reduced.

  If a sensor such as a Hall IC that detects the rotation angle of the rotation member 30 is provided, the rotation angle of the rotation member 30 detected by the sensor and the rotation angle of the shift member 40 detected by the first detection unit 75 are detected. The relative rotation angle between the rotation member 30 and the shift member 40 can be detected, and the position of the rotation member 30 in the axial direction can be recognized from the rotation angle. However, a sensor such as a Hall IC that detects the rotation angle of the rotating member 30 is expensive. On the other hand, since the 2nd detection part 76 is a proximity sensor or a mechanical sensor, it is low-cost.

  As shown in FIG. 13, the circumferential formation angle from the start end to the end of the “odd step forming groove” is different from the formation angle in the circumferential direction from the start end to the end of the “even step forming groove”. Thus, when the rotation member 30 moves in the axial direction due to the relative rotation of the shift member 40 and the rotation member 30, the AMT-ECU 113 (position) in S112 of FIG. 15 and S23, S51, S32, and S36 of FIG. Based on the information on the presence / absence of the recognition units 30x, 30y, and 30z detected by the second detection unit 76, the detection unit) determines the difference in the formation angle in the circumferential direction between the “odd step formation groove” and the “even step formation groove”. By recognizing, it is possible to recognize whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side. For this reason, it is possible to reliably determine whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side, that is, whether or not the shift operation is completed, by the single second detection unit 76. it can.

  Moreover, as shown in FIG. 13, the inclination angle from the neutral line of the first inclined part 40c (odd-stage inclined part) is different from the inclination angle from the neutral line of the third inclined part 40g (even-numbered inclined part). Yes. Accordingly, when the rotation member 30 moves in the axial direction due to the relative rotation of the shift member 40 and the rotation member 30, the AMT-ECU 113 (position detection) is performed in S112 in FIG. 15 and S23, S51, S32, and S36 in FIG. Part) based on the presence / absence information of the recognition parts 30x, 30y, 30z detected by the second detection part 76, the inclination angle from the neutral line of the first inclined part 40c and the neutral line of the third inclined part 40g. The difference in inclination angle can be recognized. For this reason, it is possible to reliably determine whether the rotating member 30 is located on the odd-numbered stage side or the even-numbered stage side, that is, whether or not the shift operation is completed, by the single second detection unit 76. it can.

  As shown in FIG. 14, a plurality of neutral recognition protrusions 30 x (neutral recognition portions) are formed at non-constant angles in the circumferential direction of the rotating member 30. Thus, when the rotating member 30 rotates, the AMT-ECU 113 (position detecting unit) detects whether or not the neutral recognition protrusion 30x detected by the second detecting unit 76 in S116 of FIG. 15 and S25 and S34 of FIG. Based on this information, the position of the rotating member 30 in the rotational direction can be detected. That is, as shown in FIG. 14, the first angle a, the second angle b, the third angle c, and the fourth angle d are different unique angles. The rotation angle of the rotating member 30 that is not detected (OFF) after the second detecting unit 76 detects (ON) the neutral recognition protrusions 30x1, 30x2, and 30x3 differs depending on the rotational position of the rotating member 30. For this reason, the AMT-ECU 113 can detect the rotational position of the rotating member 30. Thus, the single second detector 76 can detect not only the position of the rotating member 30 in the axial direction but also the position of the rotating member 30 in the rotating direction, thereby reducing the cost of the shift operating device 90. can do.

  The key 41 and the key engaging recess 30f that are the “first one-way clutch” (select mechanism) regulate the rotation of the shift member 40 in the positive rotation direction with respect to the rotating member 30, and the “second one-way clutch” (shift mechanism). The latch gear 30b and the detent member 50 restrict the rotation of the rotation member 30 in the reverse rotation direction relative to the housing 10 (main body), and the single motor 70 rotates the shift member 40 forward and backward. Thus, when the shift member 40 is rotated forward by the motor 70, the rotation of the shift member 40 in the forward rotation direction with respect to the rotation member 30 is restricted by the “first one-way clutch”, and the rotation member 30 and the shift member 40 are integrally rotated. Since the rotation member 30 can be rotated, the rotation member 30 and the shift member 40 do not rotate relative to each other, and the rotation member 30 does not slide in the axial direction with respect to the shift member 40. For this reason, the rotating member 30 is rotated forward so that any one of the engaging portions 30i, 30j, and 30k is engaged with one of the plurality of engaged portions 61b, 62b, and 63b. By engaging with each other, the “select operation” for selecting one of the shift fork members 61 to 63 among the plurality of shift fork members 61 to 63 can be reliably performed.

  Further, when the shift member 40 is rotated reversely by the motor 70, the rotation of the rotation member 30 in the reverse rotation direction relative to the housing 10 is restricted by the “second one-way clutch”, and the rotation of the shift member 40 is rotated by the “first one-way clutch”. Since the rotation in the reverse rotation direction with respect to the member 30 is allowed, only the shift member 40 can be rotated reversely with respect to the housing 10, and the rotation member 30 and the shift member 40 can be rotated relative to each other. For this reason, by the relative rotation of the rotation member 30 and the shift member 40, the “shift operation” in which the rotation member 30 is moved in the axial direction and the selected shift fork members 61 to 63 are moved in the axial direction can be reliably performed. it can.

  Further, the rotating member 30 has a “non-engagement position” (FIG. 9 (FIG. 9)) which is a rotation position in which any of the engaging portions 30 i, 30 j, 30 k is not engaged with any of the engaged portions 61 b, 62 b, 63 b. D) is configured so as to be able to stop, and the shift operation device 90 is configured to be capable of “shift operation” at the “non-engagement position”. As a result, when the second speed up shift or the second speed down shift is performed (YES in S13 of FIG. 10), the “shift operation” is performed while the rotating member 30 is in the “non-engagement position” (FIG. S35), the “shift operation” of the next gear stage can be performed quickly. In other words, in the case of the second speed up shift or the second speed down shift, the “shift operation” must be performed twice. However, if the rotation member 30 is in the “non-engagement position”, the “shift operation” is performed. Since the shift fork members 61 to 63 do not move, the synchronization time by the synchronizer rings R1 to R5 and RR can be reduced, and the second speed up shift or the second speed down shift can be performed quickly.

  Further, as shown in FIG. 9, a plurality of engaging portions 30 i, 30 j, 30 k are formed on the rotating member 30. As a result, as shown in FIG. 9D, the next engaging portion 30j is selected even after passing through the engaged portions 61b, 62b, 63b selected by a certain engaging portion 30i. Since it is waiting in front of the engaged portions 61b, 62b, and 63b to be engaged, the “select operation” can be executed quickly.

  Further, as shown in FIG. 6, the key 41 and the key engaging recess 30 f that are “first one-way clutches” are configured to be capable of backlash by a predetermined angle with respect to the rotation of the shift member 40 in the forward rotation direction with respect to the rotation member 30. Yes. As a result, during the “shift operation”, even if the shift member 40 is reversely rotated in the reverse direction and then returned to the positive rotation direction by the excessive angle, the rotation member 30 does not rotate in the positive rotation direction. For this reason, the “shift operation” can be reliably executed by rotating the shift member 40 in the reverse direction.

  In addition, as shown in FIG. 5, the shift member 40 is disposed coaxially with the rotating member 30 inside the rotating member 30. Thus, since the shift member 40 is disposed inside the rotation member 30, the shift operation device 90 is not enlarged in the axial direction, and the shift operation device 90 can be made compact.

(Second embodiment)
Hereinafter, with reference to FIG. 16, the second embodiment different from the above-described embodiment will be described with respect to differences from the above-described embodiment. As shown in FIG. 16, in the second embodiment, the formation angles in the circumferential direction of the “odd step forming groove” and the “even step forming groove” are the same. However, the formation angles in the circumferential direction of the first connection portion 40b and the second connection portion 40f are different. In the embodiment shown in FIG. 16, the formation angle in the circumferential direction of the first connection portion 40b is smaller than the formation angle in the circumferential direction of the second connection portion 40f.

  Even in such an embodiment, in S112 of FIG. 15, the AMT-ECU 113 determines that the rotation angle of the shift member 40 stored in the “storage unit”, the ON signal output by the second detection unit 76, and the OFF signal By analyzing the relationship with the signal, the position of the rotating member 30 in the shift direction can be detected.

  That is, since the formation angle in the circumferential direction of the first connection portion 40b is smaller than the formation angle in the circumferential direction of the second connection portion 40f, when the shift pin 30e slides on the first connection portion 40b, the shift pin Compared with the case where 30e is sliding on the second connection portion 40f, the rotation angle of the shift member 40 in a state where the second detection portion 76 is detecting the ON signal becomes smaller. Therefore, the AMT-ECU 113 can determine whether the shift pin 30e is sliding on the first connection portion 40b or the second connection portion 40f. And from this discrimination | determination result, AMT-ECU113 can discriminate | determine whether the shift pin 30e is sliding any of the "odd-numbered step formation groove" or the "even-numbered step formation groove". It is possible to determine whether it is located on the odd-numbered stage side or on the even-numbered stage side.

(Another embodiment)
There is no problem even if the formation angle in the circumferential direction of the odd-numbered step portion 40d is different from the formation angle in the circumferential direction of the even-numbered step portion 40h. Even in such an embodiment, the rotation angle of the shift member 40 in the state where the ON signal is output by the shift pin 30e sliding on the odd-numbered step portion 40d or the even-numbered step portion 40h (40d in FIGS. 13 and 16). 40h) is a unique angle, the AMT-ECU 113 can determine whether the shift pin 30e slides on either the odd-numbered step portion 40d or the even-numbered step portion 40h. It is possible to determine whether is located on the odd-numbered stage side or on the even-numbered stage side.

  In the embodiment described above, the first detection unit 75 is a magnetic sensor such as a Hall IC. However, the first detection unit 75 is not limited to this, such as a rotary encoder that detects the rotation of the shaft 20, or an image sensor that reads a printing unit having unevenness or light and darkness formed around the outer peripheral surface of the shaft 20. Even a sensor can be used. The first detection unit 75 may be a sensor that detects the rotation angle of the motor 70 or the shift member 40.

  In the embodiment described above, the recognition units detected by the second detection unit 76 are the even-numbered step recognition protrusions 30y, the neutral recognition protrusions 30x, and the odd-numbered step recognition protrusions 30z that are formed to protrude from the outer peripheral surface of the rotating member 30. . However, the recognition unit may be an even-numbered recognition recess 30y, a neutral recognition recess 30x, and an odd-numbered recognition recess 30z that are recessed in the outer peripheral surface of the rotating member 30. Alternatively, a recognition portion printed on the outer peripheral surface of the rotating member 30 may be used instead of the protrusions and the recesses. In the case of this embodiment, the second detection unit 76 recognizes the recognition unit.

  Instead of executing S113, when one set of neutral recognition protrusions 30x1 to 30x4 passes through the second detection unit 76 in S111, the second detection unit 76 recognizes the neutral recognition protrusion 30x, that is, neutral. There is no problem even if the AMT-ECU 113 stops the motor 70 when the recognition protrusion 30x faces the second detection unit 76 and any of the shift fork members 61 to 63 is selected.

  In the embodiment described above, the motor 70 rotates the shift member 40 via the drive gear 81, the driven gear 82, and the shaft 20. However, the motor 70 may directly rotate the shift member 40.

  In the embodiment described above, the “first one-way clutch” is composed of the key 41 and the key engaging recess 30 f, and the “second one-way clutch” is composed of the latch gear 30 b and the detent member 50. However, the "first one-way clutch" and the "second one-way clutch" are a sprag type one-way clutch in which a sprag is disposed between the outer race and the inner race, and a cam is disposed between the outer race and the inner race. Even a cam-type one-way clutch can be used.

  Further, as shown in FIG. 12, the shift member 40 is rotatably attached to the shaft 20, and the second one-way clutch 91 that restricts the rotation of the shaft 20 in the positive rotation direction relative to the rotation member 30, and the rotation member 30 of the shift member 40. The first one-way clutch 92 that allows rotation only in the reverse rotation direction with respect to the shaft and the third one-way clutch 93 that restricts rotation of the shaft 20 in the reverse rotation direction with respect to the shift member 40 may be provided. .

  Even in this embodiment, when the shaft 20 is rotated forward, the second one-way clutch 91 causes the shaft 20 and the rotating member 30 to rotate together positively, and the first one-way clutch 92 is used to rotate the rotating member 30 and the shift member 40. Can rotate forward together to execute a “select operation”. When the shaft 20 rotates in the reverse direction, the rotating member 30 is idled with respect to the shaft 20 by the second one-way clutch 91, and the shaft 20 and the shift member 40 are integrally rotated by the third one-way clutch 93. The rotation member 30 and the shift member 40 are relatively rotated by 92, and the “shift operation” can be executed. When the shaft 20 rotates in the forward direction, the second one-way clutch 91 allows the rotation member 30 to rotate in the forward rotation direction with respect to the housing 10. Further, when the shaft 20 rotates in the reverse direction, the second one-way clutch 91 allows the shaft 20 to rotate around the rotating member 30 by allowing the shaft 20 to rotate in the reverse rotating direction with respect to the rotating member 30. The rotation of the member 30 in the reverse rotation direction relative to the housing 10 is restricted.

  In the embodiment described above, the shift member 40 is disposed inside the rotating member 30. However, the shift member 40 may be an embodiment in which the shift member 40 is disposed outside the rotation member 30.

  DESCRIPTION OF SYMBOLS 10 ... Housing (main body), 30 ... Rotating member, 30b ... Latch gear (2nd one-way clutch, shift mechanism), 30e ... Shift pin (moving mechanism), 30f ... Key engagement recessed part (1st one-way clutch, select mechanism), 30i, 30j, 30k ... engagement part, 30x ... neutral recognition protrusion (neutral recognition part), 30y ... even-stage recognition protrusion (even-number recognition part), 30z ... odd-stage recognition protrusion (odd-stage recognition part), 40 ... shift member 40a ... shift groove (moving mechanism), 40b ... first connecting portion, 40c ... first inclined portion (odd-numbered step forming groove, odd-numbered step inclined portion), 40d ... odd-numbered step portion (odd-numbered step forming groove), 40e ... first Two inclined portions (odd step forming grooves), 40f ... second connection portion, 40g ... third inclined portion (even step forming grooves, even step inclined portions), 40h ... even step portions (even step forming grooves), 40i ... first Four inclined parts (even-level grooves) 50 ... Detent member (second one-way clutch, shift mechanism, rotational position detecting means), 41 ... Key (first one-way clutch, select mechanism), 50b ... Pawl member (pawl member), 61 ... First shift fork member (transmission) Member), 62 ... second shift fork member (transmission member), 63 ... third shift fork member (transmission member), 70 ... motor, 75 ... first detection unit, 76 ... second detection unit, 100 ... first selection Mechanism 200 ... Second selection mechanism 300 ... Third selection mechanism 113 ... ATM-ECU (position detection unit)

Claims (4)

The body,
A rotating member attached to the main body so as to be rotatable with respect to the main body and movable in the axial direction;
A shift pin attached to the rotating member;
A shift member that is rotatably attached to the main body and has a shift groove formed on an outer peripheral surface that engages with the shift pin;
The automatic transmission is attached to the main body so as to be movable in the axial direction, and is configured to be able to be engaged with and disengaged from the rotating member. A plurality of transmission members to be actuated;
A single motor for rotating the shift member forward and backward;
When the shift member is rotated forward by the motor, a selection operation for engaging the rotation member with one of the plurality of transmission members is performed by integrally rotating the shift member and the rotation member. A select mechanism;
When the shift member is reversely rotated by the motor, the shift member and the rotation member are rotated relative to each other, whereby the rotation member is moved from the neutral position to the odd-numbered side on the one side or the even number on the other side with respect to the axial direction. A shift mechanism that performs a shift operation to move to the stage side,
The shift groove is spaced from the neutral line, which is a line that goes around the same position in the axial direction, to the odd-numbered stage side, and is spaced from the neutral line to the even-numbered stage side. An even-numbered-stage-formed groove, a first-connection groove formed along the neutral line connecting the end of the even-numbered-stage-formed groove and the start-end of the odd-numbered-end-formed groove, and the end of the odd-numbered-stage-formed groove And a second connection groove connecting the start ends of the even-numbered step forming grooves,
On the outer peripheral surface of the rotating member, an even-numbered stage recognition unit, a neutral recognition unit, and an odd-numbered stage recognition unit are sequentially formed at intervals in the axial direction.
A first detector for detecting a rotation angle of the shift member;
With the movement of the rotating member in the axial direction, a single second detection unit that recognizes one of the odd-numbered stage recognition unit, the neutral recognition unit, and the even-numbered stage recognition unit;
A position for detecting whether or not the rotating member is located at any of the neutral position, the odd-numbered stage side, and the even-numbered stage side based on the detection information from the first detecting unit and the second detecting unit. A detection unit;
The shift operation device for an automatic transmission, wherein the odd-numbered step forming groove and the even-numbered step forming groove or the first connecting groove and the second connecting groove are formed non-identical. In claim 1,
A shift operation device for an automatic transmission in which a circumferential formation angle from the start end to the end of the odd-numbered step forming groove is different from a circumferential formation angle from the start end to the end of the even-numbered step forming groove. In claim 1 or claim 2,
The odd-numbered step forming groove has an odd-numbered inclined portion inclined toward the odd-numbered step from the neutral line, and an odd-numbered step parallel to the neutral line on the odd-numbered step side from the end of the odd-numbered inclined portion. ,
The even-stage forming groove has an even-stage inclined portion that is inclined from the neutral line to the even-stage side, and an even-stage section that is parallel to the neutral line on the even-stage side from the end of the even-stage inclined portion. ,
A shift operation device for an automatic transmission, wherein an inclination angle of the odd-numbered-step inclined portion from the neutral line and an inclination angle of the even-numbered-step inclined portion from the neutral line are different. In any one of Claims 1-3,
A plurality of the neutral recognition parts are formed at non-constant angles in the circumferential direction of the rotating member,
The position detection unit is a shift operation device for an automatic transmission that detects a position in a rotation direction of the rotating member based on detection information from the first detection unit and the second detection unit.

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