JP2009293725A - Shift-by-wire control device and its assembling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shift-by-wire control device and its assembling method, easy to install an actuator, and capable of preventing interference between a manual valve and a peripheral part by precisely effectuating a stopper. <P>SOLUTION: This shift-by-wire control device has the actuator 20 for operating the manual valve 12, its control means 40, a detent mechanism 50 having a detent plate 51 and a detent spring 52 for energizing this plate to a plurality of rotational positions, and a stopper 53 for regulating a rotational range of the detent plate 51. The detent plate 51 has a plurality of first spring engaging parts 51a-51d respectively engaging with the detent spring 52 in an engaging angle range in the rotational direction, and a second spring engaging part 51k for energizing the detent plate 51 to a specific rotational position Pover by engaging with the detent spring 52 when the detent plate 51 slips out of an ordinary rotational range including the engaging angle range of the spring engaging parts 51a-51d. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shift-by-wire control device and an assembling method thereof, and more particularly to a shift-by-wire control device and an assembling method thereof for operating a range-switching drive actuator in accordance with a command input to switch an automatic transmission range.

  Recently, in vehicles such as automobiles, a switching command signal from a driver is taken into an ECU (electronic control unit), and an actuator is operated in accordance with the command signal from the ECU, thereby switching a plurality of ranges of the automatic transmission. Shift-by-wire control devices that operate a manual valve, eliminate the need for mechanical operation linkage from the passenger compartment side, and increase the degree of freedom of arrangement of the manual operation input unit have been adopted.

  In such a shift-by-wire control device, for example, when the range select switch is switched by a driver's operation input, the ECU performs SBW (based on the switch signal and the detection signal of the valve position sensor that detects the switching position of the manual valve. Shift-by-wire) actuators are actuated. In addition, a detent mechanism including a detent plate having a plurality of V-shaped engagement recesses with valleys at each range selection position and a detent spring engaged therewith is provided between the manual valve and the SBW actuator. For example, in accordance with a change in switching speed due to the action of the detent mechanism, the SBW actuator is controlled to be accurately stopped at the selected range position (see, for example, Patent Document 1).

In addition, a detent plate corresponding to the maximum number of positions among multiple types of automatic transmissions with different positions is prepared, and the position of the stopper that can restrict the rotation of the detent plate is set to the position of the automatic transmission. It is known that the detent plate can be shared among multiple models of automatic transmissions with different number of positions while setting the normal operating range of the detent plate with a stopper. (For example, refer to Patent Document 2).
Japanese Patent Application Laid-Open No. 07-251645 JP 2006-260435 A

  However, in the conventional shift-by-wire control device and its assembling method as described above, when the manual valve is at the moving end side of the normal operation range, for example, at the P (parking) range position, the SBW actuator is moved to the manual valve. The stoppers cannot function effectively because the substantial stopper positions vary widely due to accumulation of dimensional errors, assembly position and angle errors, etc. of the plurality of transmission members constituting the transmission path. There was a possibility. Therefore, if the manual valve moves beyond the normal operating range due to an ECU failure or the like, the manual valve may interfere with peripheral parts such as the valve body before the stopper works.

  In other words, the transmission path from the SBW actuator to the manual valve is not only the variation in the operating angle accuracy and stopper position accuracy of the SBW actuator alone, but also the variation in the assembly position of the SBW actuator on the transmission side, the deceleration output of the SBW actuator. Rotation motion of parts and mounting positions of the detent spring side, gears of the gear teeth of the transmission teeth For example, when the detent spring is assembled with reference to the valley of the engagement recess of the detent plate corresponding to the neutral position, the stopper position of the stopper position is changed. The variation had to be large.

  In addition, when the normal operating range of a manual valve is defined by a stopper, such as a common detent plate among multiple automatic transmission models with different positions, the detent plate will frequently collide with the stopper. Therefore, there is a problem that there is a high possibility that the durability of each component from the SBW actuator to the stopper is impaired.

  In addition, when the normal operation range of the manual valve is restricted by a stopper, the detent plate immediately after the movement restriction by the stopper is sucked into the normal movement range, for example, the P position side (the valley of the P position of the detent plate). When the manual valve is at the switching position closest to the stopper set value, for example, at the P position, it is necessary to ensure that the tip of the detent spring falls and the detent plate is biased to the P position. It is necessary to keep a margin between the transmission member such as a lever for operating the manual valve and the stopper small. In addition, since the vehicle transmission needs to be made compact, the gap with peripheral parts such as the valve body at the moving end position of the manual valve must be reduced. Therefore, the stopper setting range becomes very narrow, and the position of the stopper can be adjusted as described in Patent Document 1 (see FIG. 3), and the troublesome position adjustment work when assembling the SBW actuator is required. There was a problem that.

  The present invention has been made to solve the above-described conventional problems, and is capable of accurately preventing the interference between the manual valve and peripheral parts by properly applying a stopper in the event of a malfunction or failure of the control system. It is an object of the present invention to provide a shift-by-wire control device that can be used, and a method for assembling the shift-by-wire control device that facilitates assembly of an actuator for the shift-by-wire.

  In order to achieve the above object, the shift-by-wire control device according to the present invention includes (1) an actuator for switching a manual valve for hydraulic control of an automatic transmission, and an operation of the actuator in response to a manual valve switching command input. Control means for switching the manual valve to a switching position corresponding to the command input among a plurality of switching positions; and a movable means that operates according to the output of the actuator in a transmission path from the actuator to the manual valve. A shift-by-wire control device comprising: a detent mechanism having a detent plate and a detent spring that biases the detent plate to a plurality of operating positions corresponding to the plurality of switching positions; and a stopper that restricts a movable range of the detent plate. In the above A plurality of first spring engagements that engage the detent spring and bias the detent plate to the plurality of operating positions within respective movable directional engagement ranges corresponding to the plurality of operating positions; And when the movable direction position of the detent plate deviates to one side from the normal movable range including the movable direction engaging range of the plurality of first spring engaging portions, the detent spring engages with the detent spring. And a second spring engaging portion that urges the detent plate to a specific position outside the normal movable range.

  With this configuration, when the second spring engaging portion of the detent plate engages with the detent spring, the detent plate is biased to a specific position outside the normal movable range, and the variation in the stopper position is large. In both cases, the movement of the detent plate in the movable direction can be restricted by the stopper in the vicinity of the specific position, and the setting range of the stopper position is not narrowed due to the suction into the normal movable range. Therefore, troublesome stopper position adjustment work is not required when assembling the shift-by-wire actuator, and the stopper is used effectively in the event of a malfunction or failure of the control system, ensuring interference between the manual valve and peripheral components. Can be prevented. The normal movable range here refers to the movable range of the detent plate when switching the manual valve to a plurality of switching positions that can be switched in response to a command input, that is, a plurality of manual valve switching according to the command input. This is the movable range of the detent plate that responds to the actuator output when the actuator output is controlled to switch to the position. Further, the specific position is the movable range of the detent plate when the actuator is driven to the target position corresponding to the command input, that is, the movable direction position of the detent plate set beyond the normal movable range, This position can be held by the function of the detent mechanism.

  Preferably, in the shift-by-wire control device according to (1) above, (2) the movable direction position of the detent plate is out of the normal movable range, and the detent plate is attached to the specific position by the detent spring. The stopper restricts the rotation of the detent plate to the one side within a range of the rotation angle to be urged.

  With this configuration, the rotation angle range in which the detent plate is urged to a specific position by the detent spring is sufficiently large with respect to variations in the stopper position. Therefore, it can be regulated more reliably.

  In the shift-by-wire control device according to (2) above, (3) when the detent plate is positioned at the specific position, the stopper restricts the rotation of the detent plate to the one side. preferable.

  With this configuration, a specific position of the detent plate can be matched with the stopper position, and the influence of rattling and dimensional errors from the detent plate to the member that contacts the stopper can be almost eliminated. Variations in mounting position can also be suppressed.

  In the shift-by-wire control device according to (2) or (3), (4) the actuator includes an electric motor and a transmission member that transmits an output of the electric motor to the detent plate, When the detent plate moves out of the normal movable range and rotates toward the one side, the stopper preferably restricts the rotation of the transmission member corresponding to the rotation of the detent plate toward the one side.

  With this configuration, the transmission path from the output portion of the actuator to the transmission member whose rotation is restricted by the stopper is minimized, and variations in position accuracy due to part dimensions, fitting, etc. in the transmission path can be suppressed. .

  In the shift-by-wire control device according to (4), (5) the transmission member is coupled to the same rotation shaft as the detent plate, and the actuator is provided with the stopper integrally. It is good to have a case member.

  With this configuration, not only the transmission path from the actuator output section to the transmission member whose rotation is restricted by the stopper is minimized, but the stopper position can be managed relatively easily and with high accuracy within the range of the actuator alone.

  In the shift-by-wire control device according to the above (4) or (5), (6) when the transmission member is located within the vicinity of the angular position where the rotation to the one side is restricted by the stopper. It is preferable to provide a restricting means capable of restricting relative rotation of the transmission member and the case member.

  With this configuration, the transmission member is put in contact with the stopper in advance before assembling the actuator into the transmission, and the transmission path is padded before the actuator is assembled. Therefore, it is possible to improve the efficiency of assembly work and improve the position accuracy.

  The assembly method of the shift-by-wire control device according to the present invention is a method for assembling the actuator of the shift-by-wire control device according to (7) and (6) to the automatic transmission to achieve the above object, The actuator is assembled to the automatic transmission in a state where the relative rotation with the case member is regulated by the regulating means, and then the detent spring is engaged with the second spring engaging portion of the detent plate. The automatic transmission is assembled to the automatic transmission.

  With this configuration, the relative rotation between the transmission member and the case member is regulated by the regulating means, so that variation in the position of the transmission member is suppressed and rattling in the transmission path is performed before the actuator is assembled. Thus, it is possible to improve the efficiency of the assembly work and improve the position accuracy.

  In the shift-by-wire control device according to (7) above, (8) after the detent spring is assembled to the automatic transmission, the restriction of the relative rotation between the transmission member and the case member by the restriction means is released. It is preferable to do this.

  As a result, the specific position of the detent plate coincides with the stopper position at the same time as the assembly of the actuator to the automatic transmission, thereby suppressing variations in the position of the transmission member and reducing backlash and position errors in the transmission path. Can be reduced.

  Note that when the detent spring is engaged with the second spring engaging portion of the detent plate, the transmission member is brought into contact with the stopper, and the padding from the transmission member to the detent plate is reduced. By doing so, errors in rattling and position in the transmission path can be minimized.

  According to the shift-by-wire control device of the present invention, a specific position that deviates from the normal movable range is set on the detent plate so that the stopper position setting range is not narrowed in order to secure suction into the normal movable range. Therefore, even if the stopper position varies widely, the rotation of the detent plate is reliably controlled by the stopper in the vicinity of a specific position, and the stopper is used effectively in the event of a malfunction or failure of the control system. A shift-by-wire control device that can reliably prevent interference with peripheral components can be provided.

  According to the assembly method of the shift-by-wire control device of the present invention, when the actuator is assembled, the relative rotation between the transmission member and the case member is regulated by the regulating means, thereby suppressing the variation in the position of the transmission member. At the same time, before the actuator is assembled, the transmission path can be padded, and the assembly work can be made more efficient and the position accuracy can be improved.

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

  FIG. 1 is a schematic configuration diagram of a shift-by-wire control device according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of the coupling state of the transmission member and the detent spring on the same rotation axis of the shift-by-wire control device according to the embodiment, and FIG. 3 is a diagram of the shift-by-wire control device according to the embodiment. FIG. 4 is a rear view of the actuator of the shift-by-wire control device according to the embodiment, and FIG. 5 is a shift-by-wire control device according to the embodiment. It is principal part side surface sectional drawing of this actuator.

  First, the configuration will be described.

  As shown in FIG. 1, the shift-by-wire control device according to the present embodiment is mounted on a vehicle (not shown) together with an automatic transmission 10, and is an SBW actuator for range switching drive attached to a case 11 of the automatic transmission 10. 20, an operation input unit 30 where an operation input for range switching by the driver is made, and a control means 40 for controlling the SBW actuator 20 in accordance with the operation input to the operation input unit 30.

  The automatic transmission 10 is a known stepped transmission and includes at least one forward range (for example, D), reverse range (for example, R), neutral range (for example, N), and parking range (for example, P). An arbitrary range can be selected. The automatic transmission 10 has a rotating member 17 (such as a gear that forms a part of a known transmission mechanism or transmission mechanism) (integrated with a rotation output element) in the case 11 and this rotation. The parking pole 18 mechanically locks the member 17. When the parking range (P) is selected by operating the switching operation member 31, the rotating member 17 in the power transmission path is mechanically moved by the parking pole 18. Built-in parking lock mechanism.

  The SBW actuator 20 switches a manual valve 12 provided in a hydraulic control unit (not shown in detail) of the automatic transmission 10 to a plurality of switching positions, and has a built-in speed reduction mechanism. Although not shown, an angular position sensor 21 that detects a plurality of output angular positions of the SBW actuator 20 as, for example, a change in voltage is mounted. The manual valve 12 is switched to an arbitrary range among at least one forward range, reverse range, neutral range, and parking range, which are a plurality of switching positions.

  The operation input unit 30 detects a switching operation member 31 configured as a switching operation lever or a range selection switch (lever switch, push button switch, rotary switch, etc.) and a range selected by the switching operation of the switching operation member 31. A known selection range detection sensor 32 is provided. The switching operation member 31 can perform an operation input for selecting an arbitrary range among a forward range, a reverse range, a neutral range, and a parking range, and is operated according to the selected range. A plurality of switching positions of the switching operation member 31 are arranged in the order of, for example, a P (parking) range, an R (reverse) range, an N (neutral) range, and a D (forward) range from the front side of the vehicle. However, the plurality of switching positions P to D are set to a plurality of switching positions P to (D) to L including a plurality of forward ranges, or P to (3) to including each speed range from the first speed to the third speed. Or 1.

  The control means 40 includes an ECU 41, a motor drive circuit 42, a selection range detection sensor 32 of the operation input unit 30, an angular position sensor 21 of the SBW actuator 20, and the like. The ECU 41 includes a CPU (Central Processing Unit), A ROM (Read Only Memory), a RAM (Random Access Memory) and a backup memory are provided, and further includes an input interface circuit including an A / D converter, an output interface circuit including a relay circuit, and the like. Yes.

  The ECU 41 performs the selection range detection information from the selection range detection sensor 32 and the current switching position information from the angle position sensor 21 according to a control program stored in advance in the ROM every preset minute time. The output angle position of the SBW actuator 20 is controlled according to the operation input to the operation input unit 30 by repeatedly taking in. That is, the control means 40 controls the operation of the SBW actuator 20 in response to a manual manual valve switching command input to the switching operation member 31, and the manual valve 12 corresponds to a manual command input among a plurality of switching positions. Switch to the switching position.

  As shown in FIGS. 1 to 5, in the transmission path from the SBW actuator 20 to the manual valve 12, a movable detent plate 51 that rotates (rotates) according to the output of the SBW actuator 20 and the detent plate 51. A detent mechanism 50 having a detent spring 52 that urges the manual valve 12 to a plurality of rotational positions (a plurality of operating positions) corresponding to a plurality of switching positions of the manual valve 12, a stopper 53 that restricts the movable range of the detent plate 51, Is provided.

  The detent spring 52 is a known one in which a cylindrical roller (hereinafter referred to as a tip roller portion 52a) is rotatably supported at the tip of a main body portion made of a cantilever leaf spring. The detent spring 52 applies a biasing force to the detent plate 51, so that a rotational displacement from a position (holding position) corresponding to a selected range among a plurality of rotational positions of the detent plate 51 is set in advance. It is intended to suppress within the range.

  Specifically, as shown in FIG. 2, the detent plate 51 is engaged with the tip roller portion 52a of the detent spring 52 within each engagement angle range (movable direction engagement range) corresponding to a plurality of rotation positions. In combination, the detent plate 51 receives a biasing force from the detent spring 52 and moves the detent plate 51 to a plurality of rotation positions (for example, rotation positions corresponding to valleys of D, N, R, or P in FIG. 2; hereinafter, rotation positions). A plurality of first spring engaging portions 51a, 51b, 51c, 51d biased to any one of D), N, R, and P) and a detent plate 51 having a plurality of rotational positions D, N, R, Engage with the detent spring 52 when it rotates in the switching direction S from one side, for example, the D range side to the P range side, out of the normal rotation range including P (normal movable range). Deten Has a second spring engaging portion 51k which urges the detent plate 51 in a specific rotational position Pover (specific position), a by the biasing force of the spring 52.

  Here, the normal rotation range of the detent plate 51 is the angular range in which the detent plate 51 can be rotated when the manual valve 12 is switched to a plurality of switching positions P to D that are switched in response to a command input. When the output of the SBW actuator 20 is controlled so as to switch the manual valve 12 to a plurality of switching positions in response to a command input, the angular range in which the detent plate 51 can rotate in response to the output of the SBW actuator 20, for example, a plurality of This is an operating angle range corresponding to the switching positions P to D, and is a normal operating angle range including all the engaging angle ranges of the plurality of first spring engaging portions 51a to 51d. When a plurality of switching positions P to D are set to a plurality of switching positions P to L including a plurality of forward ranges or P to 1, switching corresponding to the plurality of switching positions P to L or P to 1 is performed. It becomes the normal movable range of the number of positions. Further, the specific rotation position of the detent plate 51 is the moving direction of the detent plate 51 set beyond the movable range of the detent plate 51 when the SBW actuator 20 is driven to the target position corresponding to the command input. This is a non-normal movable direction position that the detent plate 51 can take when the SBW actuator 20 is not driven to the target position corresponding to the command input, and it is out of the normal movable range, but the detent of the detent mechanism 50 A specific position that can be held within a holding torque range set in advance by the function (the urging force from the detent spring 52 that engages with the second spring engaging portion 51k), for example, the rotation position Pover.

  The first spring engaging portions 51a to 51d have an uneven shape substantially the same as the unevenness of the conventional detent plate as a whole, and the engagement angles of a plurality of rotation positions D range, N range, R range, and P range. Respectively V-shaped concave shapes corresponding to the ranges (substantially V-shaped depressions at positions D, N, R, or P of the detent plate 51) are formed, and the tip roller portion 52a of the detent spring 52 is the first one. When engaging with any one of the spring engaging portions 51a to 51d, the tip roller portion 52a of the detent spring 52 falls on the valley side, and the detent plate 51 is urged to the rotation angle position corresponding to the selected range. It is like that. That is, the first spring engaging portions 51a to 51d are configured to rotate the detent plate 51 corresponding to the selected range by the urging force of the detent spring 52 within each engagement angle range (movable direction engagement range). It is possible to perform a suction action for urging.

  When the rotation position of the detent plate 51 is out of the normal rotation range and is within the rotation angle range that is biased to the specific rotation position Pover by the detent spring 52, the stopper 53 is located on the detent plate 51. The rotation to one side (for example, D side to P side) can be regulated.

  Specifically, the detent plate 51 is in a rotational position outside the normal rotational range, and the second spring engaging portion 51k of the detent plate 51 and the tip roller portion 52a of the detent spring 52 are engaged most deeply. When the detent plate 51 is positioned at a specific rotation position Pover, the stopper 53 is in contact with the detent plate 51 to restrict the rotation of the detent plate 51 to one side.

  As shown in FIGS. 1 and 4, the SBW actuator 20 further decelerates the output rotation from the electric motor 22 with a built-in reduction mechanism and the output spur gear 22a integrated with the output shaft of the electric motor 22, A spur gear lever 23 (transmission member) that can be rotated in a rotation angle range that exceeds the normal rotation range of the detent plate 51, and a rotation direction of the spur gear lever 23 at the time of switching from the D range to the P range. The case member 25 is integrally provided with a stopper 53 on one side in the movable direction which is the front side. The electric motor 22 is configured as a switched reluctance motor, for example, and has a connector portion 22b.

  As shown in FIGS. 2 and 3, the spur gear lever 23 and the detent plate 51 are spline fitted or serrated to the manual shaft 24, respectively.

  As shown in FIGS. 3 to 5, the spur gear lever 23 and the case member 25 have positioning portions 23 a and 25 a respectively at fixed radial positions from the center of rotation of the spur gear lever 23. The positioning portion 23a of the gear lever 23 is formed in a substantially oval hole shape, and the positioning portion 25a of the case member 25 is formed in a substantially circular hole shape. When the spur gear lever 23 comes into contact with the stopper 53, the positioning portion 23 a of the spur gear lever 23 has a center position on the same axis as the positioning portion 25 a of the case member 25.

  When the positioning portions 23a and 25a are located on the same axis, a round bar-like positioning pin 26 is inserted into the positioning portions 23a and 25a from the back side of the SBW actuator 20 along the same axis as shown in FIG. The spur gear lever 23 is in contact with the stopper 53 by the positioning pin 26 so that the state in which the rotation is restricted can be maintained. That is, the spur gear lever 23 and the positioning portions 23a and 25a of the case member 25 and the round bar-shaped positioning pin 26 are in the vicinity of the movement restriction position where the spur gear lever 23 is restricted from rotating to one side by the stopper 53. A restricting means 28 that can restrict the relative rotation between the spur gear lever 23 and the case member 25 when positioned inside is configured.

  By the way, when the rotation position (movable direction position) of the detent plate 51 is within the normal rotation range, the ECU 41 detects the current switching position from the angular position sensor 21 and the selection range detection sensor 32. The same control as in the conventional motor output control system is executed based on the information on the current selection range (operation position) from, but the rotation position of the detent plate 51 is the normal rotation just after assembly. When the SBW actuator 20 is driven in a state where it is at a specific rotational position Pover that is out of the range, the ECU 41, for example, of the angular position sensor 21 according to a control program stored in advance in its internal ROM. Based on the detection information, the detent plate 51 is grasped in a state where the rotation position of the detent plate 51 is at a specific rotation position Pover and detected by the selection range detection sensor 32. The detent plate 51 in the rotational position corresponding to it has been commanded selected range or predetermined range so as to rotate, so as to drive the control angle amount necessary to SBW actuator 20. The motor stop control at that time is the same as that in the normal movable range.

  In FIG. 1, the detent plate 51 can move the taper cam 19 via the compression spring 16 mounted on the L-shaped pressing rod 15 to rotate the parking pole 18, and the switching operation member When the parking range (P) is selected by a manual operation input to 31, a parking lock mechanism that mechanically locks the rotating member 17 in the power transmission path by the parking pole 18 is configured.

  Next, a method for assembling the shift-by-wire control device of this embodiment will be described.

  When assembling the shift-by-wire control device, the SBW actuator 20 is previously assembled alone. At this time, as shown in FIG. 5, a round bar-shaped positioning pin 26 is fitted into the positioning portion 23a, 25a of the spur gear lever 23 and the case member 25 from the back side of the SBW actuator 20 (the surface side that becomes the outside after assembly). . As a result, the spur gear lever 23 comes into contact with the stopper 53 and the rotation to one side is restricted.

  On the other hand, in the state where the relative rotation between the spur gear lever 23 and the case member 25 is restricted by the positioning portions 23a and 25a as described above, the SBW actuator 20 is connected to a plurality of bolts provided on the periphery of the case member 25. The holes 25b, 25c, 25d, 25e, and 25f are used to assemble and fasten the case 11 of the automatic transmission 10 with a plurality of bolts (not shown).

  As a result, the SBW is controlled in a state where the spur gear lever 23 and the detent plate 51 are restricted from rotating to one side by the stopper 53, and the spur gear lever 23 and the case member 25 are restricted from rotating relative to each other. The actuator 20 is assembled to the automatic transmission 10.

  Next, the detent spring 52 is engaged with the tip roller portion 52a of the detent plate 51 with the second spring engaging portion 51k of the detent plate 51, while the base end portion 52b side of the valve operating portion of the manual valve 12 (in FIG. 1). A portion indicated by a dotted line) is assembled to the upper portion of the body portion 13 that accommodates it, and is fastened by a fastening member 54 such as a bolt.

  When the front end roller portion 52 a of the detent spring 52 is engaged with the second spring engaging portion 51 k of the detent plate 51, the front end roller portion 52 a of the detent spring 52 is engaged with the substantially V-shaped second spring engagement of the detent plate 51. Spline fitting around the manual shaft 24 in the transmission path from the spur gear lever 23 to the detent plate 51 in a state where the spur gear lever 23 is in contact with the stopper 53 by pressing against the valley portion of the joint portion 51k. Minimize the effects of rattling on the site and meshing area.

  Until the assembly of the detent spring 52 is completed, the positioning pin 26 is fitted into the spur gear lever 23 and the positioning portions 23a and 25a of the case member 25. Then, after the assembly of the detent spring 52 is completed, the positioning pin 26 is removed from the spur gear lever 23 and the positioning portions 23 a and 25 a of the case member 25.

  Next, in order to operate the SBW actuator 20, necessary electrical connection in the control means 40 is performed. The angular position sensor 21 is mounted on the SBW actuator 20 at an arbitrary stage prior to this electrical connection.

  Next, the operation will be described.

  In the shift-by-wire control device of the present embodiment configured as described above, when the second spring engaging portion 51k of the detent plate 51 is engaged with the detent spring 52, the detent plate 51 is out of the normal rotation range. It is biased to a specific rotation position Pover.

  FIG. 6 is an explanatory diagram of the relationship between the normal rotation range of the detent plate 51 and a specific rotation position Pover, and shows an example in which the rotation angle of the detent plate 51 increases in the right direction (lateral direction) in FIG. ing. FIG. 7 is an explanatory diagram for explaining stopper setting conditions in the case where the normal rotation range of the detent plate is defined by a stopper, using the same rotation angle position and interval as in FIG.

  The specific rotation position Pover is not a stopper position that guarantees the suction of the detent plate 51 into the normal rotation range, but as shown in FIG. 6, the engagement angle range B1 of the second spring engagement portion 51k. Of these, the second spring engaging portion 51k may be located at a valley position or in the vicinity thereof. Therefore, even if the variation in the stopper position is large, the rotation of the detent plate 51 can be restricted by the stopper 53 in the vicinity of the specific rotation position Pover. In the case of the conventional method shown in FIG. ), A stopper setting range C2 that is narrowed to guarantee suction into the suction range A2 from the stopper contact position to the P position is required, whereas a sufficiently large stopper is required. The settable range C1 can be secured. As a result, troublesome stopper position adjustment work at the time of assembling the SBW actuator as in the case of the conventional method in which the movement range of the detent plate is defined by the stopper becomes unnecessary. In addition, it is possible to reliably prevent the interference between the manual valve 12 and the peripheral parts by accurately applying the stopper 53 when the control system malfunctions or fails such as when the ECU 41 fails.

  Even if the rotation position of the detent plate 51 is out of the normal rotation range, the rotation angle range (engagement angle range B1) in which the detent plate 51 is biased to the specific rotation position Pover by the detent spring 52. ), The rotation of the detent plate 51 to one side can be restricted by the stopper 53, and the rotation angle range in which the detent plate 51 is urged to the specific rotation position Pover by the detent spring 52 is, for example, Even if it is set to about half of the engagement angle range B1, the variation in the stopper position in the case 11 of the automatic transmission 10, that is, the variation D1 in the stopper contact angle position in FIG. Therefore, the rotation of the detent plate 51 can be reliably regulated by the stopper 53 in the vicinity of the specific rotation position Pover.

  Further, when the detent plate 51 is positioned at the specific rotation position Pover, the rotation of the detent plate 51 to one side is restricted by the stopper 53, so that the specific rotation position Pover of the detent plate 51 is set as the stopper position. The effect of rattling from the detent plate 51 to the spur gear lever 23 contacting the stopper 53 and the effect of position and posture errors during assembly between the detent spring 52 and the SBW actuator 20 are almost the same. It can be lost. As a result, in the present embodiment, as shown in FIG. 7, the P-position variation X1 and the stopper contact angle position variation D2 are large, as shown in FIG. The variation D1 in the stopper contact angle position is reduced and can be greatly reduced.

  In the present embodiment, the SBW actuator 20 includes an electric motor 22 and a spur gear lever 23 that transmits the output of the electric motor 22 to the detent plate 51. The detent plate 51 is normally rotated. Since the stopper 53 regulates the rotation of the spur gear lever 23 corresponding to the rotation of the detent plate 51 to the one side when the rotation to the one side in the movable direction is out of the range, the SBW actuator The transmission path from the 20 output spur gear 22a to the spur gear lever 23 whose rotation is restricted by the stopper 53 is minimized, and variation in position accuracy due to the size of parts, fitting, etc. in the transmission path is suppressed. it can.

  In addition, the spur gear lever 23 is coupled to the same manual shaft 24 as the detent plate 51, and the SBW actuator 20 includes the case member 25 integrally provided with the stopper 53, so that the output of the SBW actuator 20 is In addition to minimizing the transmission path from the shaft to the spur gear lever 23 whose rotation is restricted by the stopper 53, the position of the stopper 53 is managed relatively easily and with high accuracy within the range of the single SBW actuator 20. It will be possible.

  Further, when the spur gear lever 23 is located within the vicinity of the angular position where the rotation to the one side is restricted by the stopper 53, the relative rotation of the spur gear lever 23 and the case member 25 can be restricted. Since the restricting means 28 is provided, a preliminary work can be performed in which the spur gear lever 23 is brought into contact with the stopper 53 in advance before the SBW actuator 20 is incorporated into the automatic transmission 10.

  On the other hand, in the assembly method of the shift-by-wire control device of the present embodiment, when the SBW actuator 20 is assembled to the automatic transmission 10, the relative rotation between the spur gear lever 23 and the case member 25 is regulated by the regulating means 28. The SBW actuator 20 is assembled to the automatic transmission 10, and then the detent spring 52 is assembled to the automatic transmission 10 while engaging the second spring engaging portion 51k of the detent plate 51. Therefore, the spur gear lever 23 and the case member The relative rotation with respect to 25 can be regulated by the regulating means 28, the variation in the position of the spur gear lever 23 is suppressed, and the transmission path is padded before the SBW actuator 20 is assembled. Therefore, it is possible to improve the efficiency of assembly work and improve the position accuracy.

  Further, after the detent spring 52 is assembled to the automatic transmission 10, the restriction of the relative rotation between the spur gear lever 23 and the case member 25 by the restricting means 28 is released, so that the SBW actuator 20 is assembled to the automatic transmission 10. At the same time as the attachment, the specific rotation position Pover of the detent plate 51 matches the position of the stopper 53, thereby suppressing the variation in the position of the spur gear lever 23 and minimizing the backlash position error in the transmission path. it can.

  As described above, according to the shift-by-wire control device of the present embodiment, the detent plate 51 is set with the specific rotation position Pover that deviates from the normal rotation range, and is sucked into the P position (the position of the valley of the P range). Since the setting range of the position of the stopper 53 is not narrowed in order to ensure the suction of the range A1 (within the normal rotation range), even if the variation in the position of the stopper 53 becomes large, the detent plate 51 Is reliably regulated by a stopper 53 in the vicinity of a specific rotation position Pover, and the stopper 53 is used effectively in the event of a malfunction or failure of the control system, so that interference between the manual valve 12 and peripheral components is ensured. A shift-by-wire control device that can be prevented can be provided.

  Further, according to the assembly method of the shift-by-wire control device of the present embodiment, when the SBW actuator 20 is assembled, the relative rotation between the spur gear lever 23 and the case member 25 is regulated by the regulating means 28. In addition to stabilizing the position of the spur gear lever 23, it is possible to perform backpacking and the like in the transmission path before assembling the SBW actuator 20, thereby improving the efficiency of assembly work and improving the positional accuracy. it can.

  In the above-described embodiment, when the SBW actuator 20 is driven in a state where the rotation position of the detent plate 51 is at a specific rotation position Pover that is out of the normal rotation range, the ECU 41 In accordance with a control program stored in advance in the internal ROM, based on the detection information of the angular position sensor 21, the state where the rotation position of the detent plate 51 is at the specific rotation position Pover is grasped, and the selection range detection sensor 32 is detected. The SBW actuator 20 is driven and controlled by a necessary angle so as to rotate the detent plate 51 to the rotation position corresponding to the currently selected range or the preset range detected in (4). The rotation position of the detent plate 51 has become a specific rotation position Pover due to a failure or the like. In this case, the driver may have a diagnosis function for detecting the state and a warning output function for outputting a warning to the driver about the abnormal state. A return process or a diagnosis and warning output function may be provided.

  Further, as shown in FIG. 6, the specific rotation position Pover is at or near the valley (center position) of the second spring engagement portion 51k, but the specific rotation position Pover is the second spring engagement. The set position may be biased to the P range side that is the normal rotation range side from the valley of the joint portion 51k (between the normal movement end and the Pover set angle in FIG. 6 and the Pover set angle side), Conversely, the second spring engaging portion 51k may be biased to the outer side (interference angle side with the AT part (automatic transmission part)). In this case, since it is not necessary to guarantee the suction of the detent plate 51 to the normal rotation range side by the stopper 53, the interference angle with the AT part (automatic transmission part) and the margin clearance E1 corresponding thereto are This can be freely adjusted, and is completely different from the set gap E2 (see FIG. 7) in the case of the conventional method in which the suction is limited to within the variation of the stopper position.

  Furthermore, in the above-described embodiment, the specific rotation position Pover outside the P range side suction range A1 is set, but the present invention is only for expanding the P range side stopper installable range. It is not applicable and is not limited to a specific range. For example, on the range (for example, D range or L range) side opposite to the P range within the normal rotation range, the switching position arrangement is such that there is no margin between the manual valve and the peripheral parts. In this case, a specific rotation position (for example, Dover or Lover) outside the suction range of the range and a second spring engagement portion corresponding to the specific rotation position can be set. Further, the detent spring 52 has the leading roller portion 52a engaged with the first spring engaging portions 51a to 51d and the second spring engaging portion 51k of the detent plate 51 in a rollable manner. Needless to say, the support system, the leaf spring shape and the like are not particularly limited.

  In the above-described embodiment, the ECU 41 of the control unit 40 controls the output angular position of the SBW actuator 20 in response to a manual operation input to the switching operation member 31. Not limited to the input of a switching command by voice to the command input means, or when it is determined that the auto parking condition is satisfied in a vehicle equipped with an auto parking function that automatically shifts to the parking range when the vehicle stops. In response to a manual valve switching command signal generated by the ECU, or in response to a command input from a higher-level command means that outputs a command signal from the viewpoint of vehicle safety or stability, the ECU 41 or another ECU generates the command signal. The ECU 41 operates the SBW actuator 20 in response to a manual valve switching command signal. And controls the, it is also possible to switch the manual valve 12 to a corresponding switching position to the command input of the plurality of switching positions. Further, although the detent plate 51 is rotated, any detent plate may be used as long as it is a member on the transmission path for switching the manual valve by the power from the actuator and can generate the detent function. It is also conceivable to perform non-rotational motion (translational motion) like reciprocating linear motion.

  As described above, the shift-by-wire control device and the assembling method thereof according to the present invention ensure the suction into the normal movable range by setting the specific pivot position that deviates from the normal movable range on the detent plate. For this reason, the setting range of the stopper position is not narrowed, so even if the variation in the stopper position is somewhat large, the rotation of the detent plate is reliably regulated by the stopper near the specific rotation position, and the control system It is possible to provide a shift-by-wire control device that can effectively prevent the interference between the manual valve and peripheral parts by applying a stopper accurately in case of malfunction or failure of the actuator. By setting the relative rotation between the case member and the case member to be restricted by the restricting means, the position of the transmission member can be reduced. In addition to suppressing the fluttering, it is possible to perform backlashing etc. in the transmission path before assembling the actuator, and it is possible to improve the efficiency of assembly work and improve the position accuracy. This is useful for all shift-by-wire control devices that operate a range switching drive actuator in response to a command input to switch the range of an automatic transmission.

It is a schematic block diagram of the shift-by-wire control apparatus which concerns on one Embodiment of this invention. It is explanatory drawing of the combined state on the same rotating shaft of the transmission member and detent spring of the shift-by-wire control apparatus which concerns on the one Embodiment. It is explanatory drawing of the meshing state of the transmission member of the shift-by-wire control apparatus which concerns on the one Embodiment, and the rotation output gear part of an actuator. It is a rear view of the actuator of the shift-by-wire control apparatus which concerns on the one Embodiment. It is principal part side sectional drawing of the actuator of the shift-by-wire control apparatus which concerns on the one Embodiment. It is explanatory drawing of the relationship between the normal rotation range of the detent plate which concerns on the one Embodiment, and a specific rotation position, and has shown the example which the rotation angle of a detent plate increases rightward in the figure. It is explanatory drawing of the problem of the comparative example explaining the stopper setting condition of the conventional system which prescribes | regulates the normal rotation range of a detent plate by the expression of the position and space | interval of the rotation angle similar to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Automatic transmission 11 Case 12 Manual valve 17 Rotating member 18 Parking pole 20 SBW actuator (actuator)
21 angular position sensor 22 electric motor 22a output spur gear 23 spur gear lever (transmission member)
23a, 25a Positioning part 24 Manual shaft (rotating shaft)
25 Case member 25b, 25c, 25d, 25e, 25f Bolt hole 26 Positioning pin 28 Restricting means 30 Operation input section (command input means)
31 switching operation member 32 selection range detection sensor 40 control means 41 ECU (electronic control circuit)
42 motor drive circuit 50 detent mechanism 51 detent plate 51a, 51b, 51c, 51d first spring engaging part 51k second spring engaging part 52 detent spring 52a tip roller part 52b base end part 53 stopper 54 fastening member A1 P Suction range to position (within normal movable range)
B1 Engagement angle range of second spring engagement part (movable direction engagement range)
D1 Variation in stopper contact angle position E1 Spacing clearance

Claims (8)

The actuator for switching the manual valve for hydraulic control of the automatic transmission and the operation of the actuator are controlled in accordance with a manual valve switching command input, and the manual valve corresponds to the command input among a plurality of switching positions. Control means for switching to a switching position, a movable detent plate that operates in accordance with the output of the actuator in a transmission path from the actuator to the manual valve, and a plurality of operating positions corresponding to the plurality of switching positions In a shift-by-wire control device comprising a detent mechanism having a detent spring for biasing to and a stopper for regulating the movable range of the detent plate,
A plurality of first spring engagements wherein the detent plate engages the detent spring within a respective movable direction engagement range corresponding to the plurality of operating positions and biases the detent plate to the plurality of operating positions. And when the movable direction position of the detent plate deviates to one side from the normal movable range including the movable direction engaging range of the plurality of first spring engaging portions, the detent spring engages with the detent spring. A shift-by-wire control device, comprising: a second spring engaging portion that urges the detent plate to a specific position outside the normal movable range by an urging force from the first position.   The position of the detent plate in the movable direction is out of the normal movable range, and the detent plate is within a rotation angle range in which the detent plate is biased to the specific position by the detent spring. The shift-by-wire control device according to claim 1, wherein rotation to the side is restricted.   3. The shift-by-wire control device according to claim 2, wherein when the detent plate is located at the specific position, rotation of the detent plate to the one side is restricted by the stopper. The actuator has an electric motor, and a transmission member that transmits the output of the electric motor to the detent plate,
The stopper restricts the rotation of the transmission member corresponding to the rotation of the detent plate to the one side when the detent plate rotates to the one side out of the normal movable range. The shift-by-wire control device according to claim 2 or 3.   The shift according to claim 4, wherein the transmission member is coupled to the same rotation shaft as the detent plate, and the actuator includes a case member integrally provided with the stopper. By-wire control device.   Restricting means capable of restricting relative rotation of the transmission member and the case member when the transmission member is located within a range near the angular position where rotation to the one side is restricted by the stopper. 6. The shift-by-wire control device according to claim 4, further comprising a shift-by-wire control device. A method for assembling the actuator of the shift-by-wire control device according to claim 6 to the automatic transmission,
The actuator is assembled to the automatic transmission in a state where the relative rotation between the transmission member and the case member is restricted by the restriction means, and then the detent spring is attached to the second spring engaging portion of the detent plate. A shift-by-wire control device assembling method, characterized in that the shift-by-wire control device is assembled to the automatic transmission while being engaged.   8. The shift-by-wire control device according to claim 7, wherein after the detent spring is assembled to the automatic transmission, restriction of relative rotation between the transmission member and the case member by the restriction unit is released. Assembling method.