Vehicle transaxle and parking actuator arrangement

Abstract

Transaxle, in its entirety: a case (62); and a parking actuator arrangement (66) which is arranged in the housing (62) and a solenoid comprising a pin (270) pre-tensioned to an extended position, a rack (102) which is operatively coupled to a parking rod (40) and defines a first and a second ramp-shaped recess (160, 162), wherein the first ramp-shaped recess (160) defines a first engagement surface (168) and the second ramp-shaped recess (162) defines a second engagement surface (170), wherein the ramp-shaped recesses (160, 162) are each configured to receive the pin (270), wherein the rack (102) and the solenoid are arranged such that, as the rack (102) moves from an extended to a retracted position, the pin (270) travels along the ramp-shaped recesses (160, 162), while the recesses (160, 162) move relative to the pin (270) until the pin (270) engages the second engagement surface (170), and a preload member (104) which is coupled to the rack (102) and is configured to preload the rack (102) to an extended park position.

Description

TECHNICAL AREA

[0001] The present disclosure relates to a vehicle transaxle and a parking actuator arrangement. BACKGROUND

[0002] Automatic transmissions may be equipped with a transmission range control module to control the park, reverse, neutral, and drive ranges. The transmission range control module may be an electromechanical or electrohydraulic system. The transmission range control module may be configured to selectively engage and disengage a parking pawl from a parking pawl gear.

[0003] Some transmission range control modules contain a compression spring used to apply force to allow the parking pawl to engage releasably with the parking pawl gear. A shift arm may be provided to release the parking pawl while the vehicle is being driven and may engage the parking pawl when the transmission range control module is placed in the park position.

[0004] DE 10 2008 011 898 A1 describes a parking lock switching device of a motor vehicle with at least one hydraulic switching unit, wherein the switching unit is designed for a drive unit that is separate from an internal combustion engine.

[0005] DE 26 01 178 A1 discloses a friction-operated variable switching device for a motor vehicle, comprising a mechanical switching device for the movement of the vehicle, a stopping device for parking the vehicle, first means for driving the switching device and second means for actuating the stopping device, as well as a control means for the first and second means.

[0006] DE 10 2010 043 257 A1 relates to a device for operating a parking lock mechanism with a hydraulically actuated piston-cylinder assembly, which can be actuated via a valve assembly with operating pressure for actuating the parking lock mechanism. The valve assembly is designed with at least one electrically operated actuator and at least one valve unit that can be actuated via the actuator with pilot pressure. SUMMARY

[0007] In at least one embodiment, a transaxle is provided. The transaxle can include a housing and a parking actuator assembly. The parking actuator assembly can be located within the housing and can include a solenoid, a rack, and a preload element. The solenoid can include a pin preloaded to an extended position. The rack can be operatively coupled to a parking rod and can define a first and a second ramped recess, each configured to receive the pin. The rack and solenoid can be arranged such that, as the rack moves between an extended and a retracted position, the pin travels along the ramped recesses while the recesses move relative to the pin. The preload element can be coupled to the rack and configured to preload the rack to a parking mechanism.

[0008] In at least one embodiment, a transaxle is provided. The transaxle can include a housing and a parking actuator assembly arranged within the housing. The parking actuator assembly can include an actuator, a rack, and a preload element. The actuator can include a pin that is preloaded to an extended position. The rack can be configured to support a parking rod and can define a first and a second ramp-shaped recess, each configured to receive the pin. The preload element can be coupled to the rack and configured to preload the parking rod for engagement with a parking mechanism.

[0009] In at least one embodiment, a parking actuator assembly is provided. The parking actuator assembly can include a solenoid, a rack, a preload element, and a drive motor assembly. The solenoid can include a pin that is preloaded to an extended position. The rack can be operatively coupled to a parking rod. The rack can define a first and a second ramped surface adjacent to each other, and a first and a second engagement surface on respective sides of the ramped surfaces. The preload element can be located close to the rack and can be configured to engage a stop extending from the rack, thus preloading the rack to form a parking mechanism. The drive motor assembly can be in driving engagement with the rack.The solenoid, rack and drive motor assembly can be arranged such that, while the drive assembly translationally moves the rack from an extended position to a retracted position, the pin runs along the first ramped surface and then the second ramped surface, at least until the pin engages the second engagement surface. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a perspective view of a gearbox parking system according to current production. Fig. Figure 2 is a partial side view of an example transaxle. Fig. Figure 3 is a first partial side view of an exemplary parking actuator arrangement in a retracted or non-parking position. Fig. Figure 4 is a second partial side view of the exemplary parking actuator arrangement in an extended or parked position. Fig. Figure 5 is a second partial side view of the exemplary parking actuator arrangement in a retracted or non-parking position. DETAILED DESCRIPTION

[0010] As necessary, detailed embodiments of the present invention are disclosed herein; however, it is understood that the disclosed embodiments are purely exemplary of the invention, which can be implemented in various and alternative ways. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. The specific structural and functional details disclosed herein should therefore not be interpreted as limiting, but merely as a representative basis for teaching a person skilled in the art how the present invention can be used in various ways.

[0011] With reference to Fig. Figure 1 shows a transmission parking system 10 according to current production. The transmission parking system 10 can be an electronically actuated transmission parking lock pawl-wheel system configured to selectively restrict or block the rotation of a transmission output shaft. The transmission parking system 10 can include a parking actuator system 20 and a parking lock mechanism 22.

[0012] The parking actuator system 20 can be connected to a transmission range sensor 24. The transmission range sensor 24 can be configured to provide a signal indicating a transmission range, such as park, neutral, reverse, or drive. Placing the transmission in a park position can cause the parking pawl 30 to rotate about a pivot pin 32. The rotation of the parking pawl 30 can cause a tooth 34 of the parking pawl 30 to mesh with a gear tooth of the parking gear 36. The parking pawl 30 can be rotated about the pivot pin 32 by the parking lock mechanism 22.

[0013] The parking lock mechanism 22 can include a parking rod 40, a ratchet spring 42, an actuating cam 44, and a guide cup 46. The parking rod 40 can be arranged between the parking lock pawl 30 and a plate 50. The ratchet spring 42 can be arranged around the parking rod 40 and between the actuating cam 44 and the parking rod connection with a plate 50.

[0014] The parking rod 40 can be operatively connected to a slot 52 formed in the plate 50. The plate 50 can include a series of locking positions corresponding to the transmission ranges of Park, Neutral, Reverse, and Drive. The plate 50 can be attached to a shaft and lever 54. The shaft and lever 54 can be configured to pivot the plate 50 about an axis in response to movement of a transmission range selector into a position corresponding to the desired transmission range. Placing the transmission range selector in a Park position can cause the parking rod 40 to move longitudinally between a position allowing rotation of the output shaft and a position restricting rotation of the output shaft.

[0015] As the parking rod 40 moves, the actuating cam 44 can run along an inclined surface formed on the parking pawl 30 and / or on the guide cup 46, causing the parking pawl 30 to rotate about the pivot pin 32. A return spring 56, arranged around the pivot pin 32, can actuate the parking pawl 30 away from the output shaft rotation restriction position.

[0016] On Fig. 2 With reference to Figure 2, a partial side view of an exemplary vehicle transaxle 60 is shown. The vehicle transaxle 60 can include a transaxle housing 62, an output shaft 64, and a parking actuator assembly 66. The transaxle housing 62 can accommodate at least part of a transmission assembly configured to provide torque to the output shaft 64.

[0017] The parking actuator assembly 66 can be located within the transaxle housing 62. The parking actuator assembly 66 can be located on an inner surface of the transaxle housing 62. The parking actuator assembly 66 can extend at least partially through an opening 70 defined by the transaxle housing 62. The parking actuator assembly 66 can be configured to selectively actuate a parking mechanism 80 to block or restrict rotation of the output shaft 64. The parking actuator assembly 66 can move between an extended position, in which the parking actuator assembly 66 engages the parking mechanism 80 to restrict rotation of the output shaft 64, and a retracted position, in which the parking mechanism 80 does not restrict rotation of the output shaft 64. The extended position can correspond to the parked position of the transmission assembly. The retracted position can correspond to a non-parked position of the transmission assembly.

[0018] The parking mechanism 80 can include a parking wheel 82 and a pawl 84. The parking wheel 82 can be rotatably mounted in or on the transaxle housing 62 near the opening 70. The parking wheel 82 can be arranged around the output shaft 64 and rigidly coupled to it. The parking wheel 82 can rotate selectively with the output shaft 64. The parking wheel 82 can be provided with several gear teeth 86 arranged around its circumference. The pawl 84 can be configured to selectively engage at least one of several gear teeth 86 to restrict rotation of the output shaft 64 and the parking wheel 82 when the parking actuator assembly 66 engages the parking mechanism 80.

[0019] The parking actuator assembly 66 can be connected to a transmission shift assembly 90 and a control module 92. The transmission shift assembly 90 can be a transmission gear selector connected to the transmission assembly. The transmission shift assembly 90 can be selectively movable between several positions, such as a "park position," a "reverse position," a "neutral position," and a "drive position," corresponding to different operating ranges or modes of the transmission assembly. The transmission shift assembly 90 can include a transmission range sensor configured to provide a signal indicating a transmission assembly position to the control module 92. The transmission shift assembly 90 can provide a signal to the parking actuator assembly 66 via the control module 92 to place the transmission assembly in the park position, thereby limiting the rotation of the output shaft 64.

[0020] On the Fig. Referring to 2-5, the parking actuator assembly 66 can include a parking rod 100, a rack 102, a preload member 104, an actuator 106, and a drive motor assembly 108. The parking rod 100 can extend along a first axis 120. The parking rod 100 can have a first end 122, a second end 124, a generally elongated body 126, a projection 128, and a connecting region 130. The generally elongated body 126 can extend between the first end 122 and the second end 124. The generally elongated body 126 can have an elongated cylindrical shape. The projection 128 can be arranged around an outer surface of the elongated body 126 near the second end 124. The projection 128 can be arranged between the first end 122 and the connecting region 130. The connection area 130 can be located near the second end 124 and can be configured to accommodate at least part of the rack 102.

[0021] A cam link 140 can be slidably arranged on the parking rod 100 near the first end 122. The cam link 140 can be configured to engage the parking mechanism 80 when the parking actuator assembly 66 is in the extended position. A ratchet link 142 can be arranged around the generally elongated body 126 and can extend between the first end 122 and the second end 124. The ratchet link 142 can be configured as a preloading element, such as a linear spring or the like. The ratchet link 142 can engage the cam link 140 and the projection 128 to preload the cam link 140 against the parking mechanism 80. The parking rod 100 can define a passage 136 located near the second end 124.

[0022] The rack 102 can extend along a second axis 150. The first axis 120 can be substantially parallel to the second axis 150, but not coplanar to it. The rack 102 can have a first end 152, a second end 154, and a generally elongated body 156. The generally elongated body 156 can extend between the first end 152 and the second end 154. The generally elongated body 156 can have an elongated cylindrical shape. The rack 102 can be operatively coupled to the parking rod 100 near the connection area 130. The rack 102 can be configured to transport the parking rod 100 while the rack 102 moves translationally between an extended and a retracted position, together with the movement of the parking actuator assembly 66 between an extended and a retracted position.

[0023] At least part of the first end 152 can extend through the connection area 130. The parking rod 100 can fit loosely onto the rack 102 near the connection area 130. In at least one embodiment, the parking rod 100 can be fixedly arranged on the rack 102 by means of a fastening element, lugs, or the like extending through the connection area 130.

[0024] The rack 102 can define a first recess 160 and a second recess 162, located near the second end 154. The first recess 160 can correspond to the extended position of the rack 102. The second recess 162 can correspond to the retracted position of the rack 102. The first recess 160 can be configured as a first ramped recess surface 164. The second recess 162 can be configured as a second ramped recess surface 166. The first and second ramped recess surfaces 164, 166 can be arranged adjacent to each other. The first ramped recess surface 164 can be a first inclined surface inclined towards the first end 152. The second ramped recess surface 166 can be a second inclined surface inclined towards the second end 154.

[0025] The rack 102 can define a first and a second engagement surface 168, 170 on respective sides of the first and second ramp-shaped recess surfaces 164, 166. The first engagement surface 168 can be located closer to the second end 154 than the second engagement surface 170.

[0026] A bracket 180 can be configured to at least partially accommodate the parking rod 100 and the rack 102. The bracket 180 can couple the parking actuator assembly 66 to an inner surface of the transaxle housing 62. The bracket 180 can have a first part 182 and a second part 184. The first part 182 can be located near the parking mechanism 80 and can couple the bracket 180 to the transaxle housing 62 near the opening 70. The second part 184 can be located near the second end 154 of the rack 102. The second part 184 can define a bracket bearing surface 186.

[0027] The first end 152 of the rack 102 can be located near the first part 182. The second end 154 of the rack 102 can be located near the second part 184. A stop bracket 188 can be located near the first part 182. The stop bracket 188 can be configured to engage the first end 152 of the rack 102 when the rack 102 is in the extended (parked) position. The stop bracket 188 can be configured to block any further translational movement of the rack 102 towards the parking mechanism 80.

[0028] A stop element 200 can be operatively coupled to the rack 102. The stop element 200 can be arranged near the first end 152 of the rack 102 and can be spaced apart from the first and second recesses 160, 162. The stop element 200 can be arranged around the rack 102 and extend away from it. In at least one embodiment, the stop element 200 can be formed integrally with the rack 102. The stop element 200 can define a stop element bearing surface 202. The stop element bearing surface 202 can face the mounting bearing surface 186 and be spaced apart from it.

[0029] The preload element 104 can be at least partially accommodated in the bracket 180. The preload element 104 can be coupled to the rack 102. The preload element 104 can engage the bracket bearing surface 186 and the stop element bearing surface 202. The preload element 104 can be configured to preload the parking rod 100 and the rack 102 to the parking mechanism 80 and / or the parking position. The preload element 104 can be configured as a linear spring, a linear actuator, or the like.

[0030] The bracket 180 can be configured to receive the actuator 106. The actuator 106 can be located near the second part 184 of the bracket 180. The actuator 106 can include a pin 270 and an actuator preload element 212. The actuator preload element 212 can be configured to preload the pin 270 to an extended position. The actuator preload element 212 can be a linear spring having a spring constant that is smaller than the spring constant of the preload element 104 and / or the ratchet element 142. In at least one embodiment, the actuator 106 can be a solenoid, a retractable pin mechanism, or the like. The first and second recesses 160, 162 can be configured to receive the pin 270.

[0031] The rack 102 and the actuator 106 can be arranged such that the pin 270 is received in the first recess 160 and can engage the first engagement surface 168 when the rack 102 is in the extended position. The rack 102 and the actuator 106 can also be arranged such that the pin 270 travels along the first ramped recess surface 164 and then the second ramped recess surface 166 as the rack 102 moves from the extended position to the retracted position with the movement of the first and second recesses 160, 162 relative to the pin 270. The rack 102 and the actuator 106 can be arranged such that the pin 270 is received in the second recess 162 and can engage the second engagement surface 170 when the rack 102 is in the retracted position.

[0032] The actuator 106 can be selectively driven or activated to hold the pin 270 in the extended position. The control module 92 can activate the actuator 106 in response to the pin 270 engaging the first engagement surface 168. The actuator 106 can hold the pin 270 in the extended position while the rack 102 is in the extended position, as shown in Fig. Figure 4 shows that the pin 270 can block translational movement of the rack 102 from the extended position. The control module 92 can activate the actuator 106 in response to the pin 270 engaging the second engagement surface 170. The actuator 106 can hold the pin 270 in the retracted position while the rack 102 is in the retracted position, as shown in Figure 4. Fig. Figure 5 shows that the pin 270 can block a translational movement of the rack 102 from the retracted position.

[0033] The actuator 106 can be switched off or deactivated so that the pin 270 is held in the extended position by the actuator preload element 212. The first and second ramped recess surfaces 164, 166 can be inclined so that, during the translational movement of the first and second recesses 160, 162 with respect to the pin 270, the first and second ramped recess surfaces 164, 166 force the pin 270 to retract at least partially into the actuator 106, and the pin 270 runs along the first and second ramped recess surfaces 164, 166.

[0034] The preload element 104 and the rack 102 can be arranged such that, in response to the termination of the power supply to the actuator 106, the preload element 104 pushes the rack 102 from the retracted position to the extended position to engage the parking mechanism 80. The control module 92 can deactivate the actuator 106 in response to a change in the position of the transmission assembly from a park position to a non-park position or from a non-park position to a park position. The control module 92 can deactivate the actuator 106 in response to a loss of connection between the parking actuator assembly 66 and the control module 92. A connection between the parking actuator assembly 66 and the control module 92 can be terminated if a power supply failure of the vehicle occurs.

[0035] The drive motor assembly 108 can extend at least partially through the transaxle housing 62 and be rigidly attached to it. The drive motor assembly 108 can be configured to engage with the rack 102. The drive motor assembly 108 can include a drive motor 220, a drive wheel 222, and an override feature 224. The drive motor 220 can be operatively connected to the drive wheel 222. The drive wheel 222 can be in operative engagement with the rack 102. In response to the operation of the drive motor 220, the drive wheel 222 rotates and moves the rack 102 translationally from the extended position to the retracted position. In at least one embodiment, the drive motor assembly 108 can be configured to move the rack 102 translationally from the retracted position to the extended position.

[0036] The drive motor assembly 108 and the actuator 106 can be arranged such that, in response to the actuation of the gearshift assembly 90 to change the gearshift assembly from a park position to a non-park position, the control module 92 deactivates the actuator 106. The drive motor assembly 108 can move the rack 102 translationally from the extended position to the retracted position. The drive motor assembly 108 and the actuator 106 can be arranged such that, in response to the actuation of the gearshift assembly 90 to change the gearshift assembly from a non-park position to a park position, the control module 92 deactivates the actuator 106. The preload element 104 can push the rack 102 from the retracted position to the extended position to engage the parking mechanism 80.

[0037] The override feature 224 can be arranged on or in the drive wheel 222. The override feature 224 can be configured to accept a tool, such as an Allen key or a similar tool, that can engage the override feature 224. The rotation of the tool and the override feature 224 can actuate the drive wheel 222 to move the rack 102 translationally from the extended position to the retracted position or from the retracted position to the extended position.

[0038] An access cover can be arranged over the transaxle housing 62. The access cover can provide access to the drive motor assembly 108, allowing the tool to be inserted into the override feature 224.

[0039] The features of different implementation forms can be combined to create further embodiments of the invention.

[0040] It is further described as follows: A. Transaxle, comprehensive: a case; and a parking actuator assembly located in the housing and a solenoid containing a pin biased to an extended position, a rack operatively coupled to a parking rod and defining a first and a second ramp-shaped recess, each configured to receive the pin, wherein the rack and the solenoid are arranged such that, as the rack moves between an extended and a retracted position, the pin runs along the ramp-shaped recesses while the recesses move relative to the pin, and a preload element coupled to the rack and configured to preload the rack into a parking mechanism. B. Transaxle to A, wherein the first ramp-shaped recess corresponds to the extended position of the rack and the second ramp-shaped recess corresponds to the retracted position of the rack. C. Transaxle to A, wherein the parking actuator assembly is connected to a control module configured to provide a signal indicating a transmission range. D. Transaxle to C, wherein the parking actuator arrangement further comprises a drive motor arrangement configured to engage the rack, wherein the drive motor arrangement and the solenoid are arranged such that the solenoid is deactivated in response to a signal indicating a change of the transmission from a park position to a non-park position, and the drive motor arrangement moves the rack translationally from the extended position to the retracted position, and the pin runs along a surface of the first ramped recess and a surface of the second ramped recess during the translational movement of the rack. E. Transaxle to D, wherein the solenoid is deactivated in response to a loss of connection between the parking actuator assembly and the control module, and the preload member pushes the rack from the retracted position to the extended position to engage the parking mechanism, and the pin runs along the surface of the second ramp-shaped recess and the surface of the first ramp-shaped recess during the translational movement of the rack. F. Transaxle to D, wherein the first ramp-shaped recess defines a first engagement surface and the second ramp-shaped recess defines a second engagement surface. G. Transaxle to F, wherein the solenoid is activated in response to the pin engaging the second engagement surface, so that the pin blocks a translational movement of the rack from the retracted position. H. Transaxle, comprehensive: a case; and a parking actuator arrangement located in the housing and an actuator containing a pin that is biased to an extended position; a rack configured to support a parking pole and defining a first and a second ramp-shaped recess, each configured to receive the pin, and a preload element coupled to the rack and configured to preload the parking rod for engagement with a parking mechanism. I. Transaxle according to H, wherein the preload member is a linear spring. J. Transaxle to H, wherein the actuator includes an actuator preload element configured to preload the pin to the extended position. K. Transaxle to H, wherein the parking rod extends along a first axis and the rack extends along a second axis. L. Transaxle to K, wherein the first axis is arranged essentially parallel to, but not coplanar with, the second axis. M. Transaxle according to H, wherein the parking actuator arrangement further includes a stop element which is operatively coupled to the rack and spaced apart from the first and the second ramp-shaped recess, and wherein the stop element defines a first bearing surface. N. Transaxle to M, wherein the parking actuator assembly further includes a support configured to at least partially accommodate the rack and preload member and to couple the parking actuator assembly to an inner surface of the housing, and wherein the support defines a second bearing surface. O. Transaxle to N, wherein the preload member is configured to act on the first bearing surface and the second bearing surface. P. Park actuator arrangement, including: a solenoid containing a pin pre-tensioned to an extended position; a rack that is operatively coupled to a parking rod and defines a first and a second ramp-shaped surface that lie next to each other, and a first and a second engagement surface on respective sides of the ramp-shaped surfaces; a stop located near one end of the rack; a preloading element arranged close to the rack and configured to engage a stop extending from the rack and preload the rack into a parking mechanism; and a drive motor arrangement which engages with the rack, wherein the solenoid, the rack and the drive motor arrangement are arranged such that, while the drive arrangement translationally moves the rack from an extended position to a retracted position, the pin runs along the first ramped surface and then the second ramped surface, at least until the pin engages the second engagement surface. Q. Parking actuator arrangement according to P, wherein the preload member and the rack are arranged such that, in response to a cessation of the energy supply to the solenoid, the preload member pushes the rack to the extended position, and while the preload member pushes the rack translationally from the retracted position to the extended position, the pin travels along the second ramped surface and the first ramped surface, at least until the rack engages the stop and the pin engages the first engagement surface to block any further translational movement of the rack. R. Parking actuator arrangement according to P, wherein the drive motor arrangement extends at least partially through a transaxle housing and is firmly attached to it. S. Parking actuator arrangement according to P, wherein the drive motor arrangement includes an override feature arranged on a drive wheel configured to engage the rack, wherein the override feature is configured to receive a tool such that, in response to a rotation of the tool, the drive wheel moves the rack translationally from the extended position to the retracted position.

Claims

[1] Transaxle, encompassing: a case (62); and a parking actuator arrangement (66) which is arranged in the housing (62) and a solenoid comprising a pin (270) pre-tensioned to an extended position, a rack (102) which is operatively coupled to a parking rod (40) and defines a first and a second ramp-shaped recess (160, 162), wherein the first ramp-shaped recess (160) defines a first engagement surface (168) and the second ramp-shaped recess (162) defines a second engagement surface (170), wherein the ramp-shaped recesses (160, 162) are each configured to receive the pin (270), wherein the rack (102) and the solenoid are arranged such that, as the rack (102) moves from an extended to a retracted position, the pin (270) travels along the ramp-shaped recesses (160, 162), while the recesses (160, 162) move relative to the pin (270) until the pin (270) engages the second engagement surface (170), and a preload member (104) which is coupled to the rack (102) and is configured to preload the rack (102) to an extended park position. [2] Transaxle according to claim 1, wherein the first ramp-shaped recess (160) corresponds to the extended position of the rack (102) and the second ramp-shaped recess (162) corresponds to the retracted position of the rack (102). [3] Transaxle according to claim 1, wherein the parking actuator arrangement (66) is connected to a control module (92) configured to provide a signal indicating a transmission range. [4] Transaxle according to claim 3, wherein the parking actuator arrangement (66) further comprises a drive motor arrangement (108) configured to engage the rack (102), wherein the drive motor arrangement (108) and the solenoid are arranged such that the solenoid is deactivated in response to a signal indicating a change of the transmission from a park position to a non-park position, and the drive motor arrangement (108) moves the rack (102) translationally from the extended position to the retracted position, and the pin (270) runs along a surface (164) of the first ramp-shaped recess (160) and a surface (166) of the second ramp-shaped recess (162) during the translational movement of the rack (102). [5] Transaxle according to claim 4, wherein the solenoid is deactivated in response to a loss of connection between the parking actuator arrangement (66) and the control module (92), and the preload member (104) pushes the rack (102) from the retracted position to the extended position to engage the parking mechanism (80), and the pin (270) runs along the surface (166) of the second ramp-shaped recess (162) and the surface (164) of the first ramp-shaped recess (160) during the translational movement of the rack (102). [6] Transaxle according to claim 1, wherein the solenoid is activated in response to the pin (270) engaging the second engagement surface (170), such that the pin (270) blocks a translational movement of the rack (102) from the retracted position.

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