JP2016049809A - Vehicle parking lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle parking lock device which suppresses the generation of a time difference in a period after a parking brake operation by a driver up to the completion of a parking brake.SOLUTION: Since a plurality of parking poles 16a, 16b are aligned in an axial direction of a turning shaft 28, and lock teeth 26a, 26b which are formed at a plurality of parking poles 16a, 16b, respectively, are formed in positions which are displaced from each other by a width dimension d of the lock tooth 26 with respect to longitudinal positions of the parking poles 16a, 16b, when the parking pole 16 is raised and contacts with a parking gear 14 in conjunction with a parking brake operation by a driver, a chance is increased in which the lock tooth 26 of the parking pole 16 is engaged with a tooth groove 24 of the parking gear 14, and thereby, the engagement of the parking gear 14 and the parking pole 16 can be smoothly performed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle parking lock device, and more particularly to an improvement for suppressing the occurrence of a time difference from a parking brake operation by a driver to the completion of the parking brake.

  A parking gear having a plurality of outer peripheral teeth formed on an outer peripheral portion; and a plurality of parking poles having locking teeth that are fitted in tooth spaces between the outer peripheral teeth of the parking gear. There has been proposed a vehicle parking lock device in which parking poles are installed side by side in the axial direction of a rotating shaft. For example, an apparatus that prevents rotation of an output shaft of an engine of a motor vehicle described in Patent Document 1 is an example. According to this technique, a plurality of parking poles (first finger and second finger) installed side by side in the axial direction of the rotation shaft are provided, and the second finger is positioned in conjunction with a parking brake operation by the driver. After being engaged with the parking gear as the aligning means, the first finger is engaged with the parking gear, thereby ensuring that the output shaft is reliably locked.

JP 2011-529165 A

  However, in the prior art, during the parking brake operation by the driver, while the tooth portion (convex surface) formed on the outer peripheral portion of the parking gear and the locking tooth (convex surface) of each parking pole are in contact, The parking gear and the parking pole are not engaged until the locking gear is in a relative position where the locking tooth is engaged with the tooth groove by the rotation of the parking gear. For this reason, there is a possibility that a time difference may occur between the parking brake operation by the driver and the completion of the parking brake.

  The present invention has been made against the background of the above circumstances, and an object of the present invention is to provide a parking lock device for a vehicle that suppresses the occurrence of a time difference from the parking brake operation by the driver to the completion of the parking brake. There is.

  In order to achieve such an object, the gist of the present invention is that a parking gear having a plurality of outer peripheral teeth formed on the outer peripheral portion, and a gear fitted to a tooth gap between the outer peripheral teeth in the parking gear. A parking lock device for a vehicle provided with a plurality of parking poles formed with stop teeth, wherein the plurality of parking poles are arranged side by side in the axial direction of the rotation shaft, each formed on each of the plurality of parking poles The locking teeth thus formed are formed at positions shifted from each other by the width dimension of the locking teeth with respect to the longitudinal position of the parking pole.

  In this way, the locking teeth formed on each of the plurality of parking poles are formed at positions shifted from each other by the width dimension of the locking teeth with respect to the longitudinal position of the parking pole. Therefore, when the parking pole is lifted in contact with the parking brake operation by the driver and comes into contact with the parking gear, there is an opportunity for the locking teeth of the parking pole to be engaged with the tooth gap of the parking gear. Therefore, the engagement between the parking gear and the parking pole can be realized quickly. That is, it is possible to provide a vehicle parking lock device that suppresses the occurrence of a time difference from the parking brake operation by the driver to the completion of the parking brake.

It is a figure explaining the structure of the parking lock apparatus for vehicles which is one Example of this invention. FIG. 2 is a partially enlarged view illustrating the configuration of a plurality of parking poles provided in the vehicle parking lock device of FIG. 1. In the parking lock device for vehicles of Drawing 1, it is a figure explaining signs that the engagement tooth in any parking pole is made to fit in a tooth gap according to the phase of the parking gear with respect to a parking pole. In the parking lock device for vehicles of Drawing 1, it is a figure explaining signs that the engagement tooth in any parking pole is made to fit in a tooth gap according to the phase of the parking gear with respect to a parking pole. For comparison with the present embodiment, it is a diagram for explaining the configuration of a conventional parking lock device for a vehicle, and shows a state in which the locking teeth in the parking pole cannot be fitted into the tooth gap. For comparison with the present embodiment, it is a diagram for explaining the configuration of a conventional parking lock device for a vehicle, and shows a state in which locking teeth in a parking pole are fitted into a tooth gap.

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

  FIG. 1 is a diagram illustrating a configuration of a vehicle parking lock device 10 (hereinafter simply referred to as a parking lock device 10) according to an embodiment of the present invention. As shown in FIG. 1, a parking lock device 10 according to this embodiment is provided in a transaxle case 12 (hereinafter simply referred to as a case 12), which is a non-rotating member, and includes a parking gear 14, A plurality (two in FIG. 1) of parking poles 16 a and 16 b (hereinafter simply referred to as parking pole 16 unless otherwise distinguished) and a shift switching device 18 are provided. The shift switching device 18 rotates a detent member 32 (to be described later) around a predetermined axis by an actuator such as a motor in response to an operation of a shift operation device (not shown) by a driver, thereby causing a shift range of a transmission (not shown). This is an example of a so-called shift-by-wire mechanism that switches between the two by electric control. That is, the parking lock device 10 of the present embodiment is preferably a shift-by-wire parking device that prevents rotation of the output shaft 20 by electrical control in accordance with a parking brake operation by the driver.

  The parking gear 14 is fixed, for example, coaxially with the output shaft 20 that constitutes a part of a power transmission path from a driving force source to driving wheels in the vehicle and not rotatable relative to the output shaft 20. The output shaft 20 corresponds to, for example, a counter shaft that forms part of a power transmission path between an output shaft of a transmission (not shown) provided in the vehicle and a differential gear device. As shown in FIG. 1, a plurality of outer peripheral teeth 22 are formed on the outer peripheral portion of the parking gear 14 at substantially equal intervals in the peripheral direction so as to protrude in the outer peripheral direction. That is, a plurality of tooth grooves 24 are formed at substantially equal intervals in the circumferential direction between the plurality of outer peripheral teeth 22 on the outer peripheral portion of the parking gear 14. The circumferential width dimension of the parking gear 14 in the outer peripheral teeth 22 and the tooth grooves 24 may be substantially the same in the outer peripheral teeth 22 and the tooth grooves 24, but preferably, it will be described later with reference to FIG. As shown, the width dimension of the tooth gap 24 is larger than the width dimension of the outer peripheral teeth 22.

  The plurality of parking poles 16 a and 16 b are supported by a rotating shaft 28 fixed to the case 12, and are provided so as to be rotatable around the axis of the rotating shaft 28. That is, in the parking lock device 10 of the present embodiment, the plurality of parking poles 16 a and 16 b are installed side by side in the axial direction of the common rotation shaft 28. The parking poles 16a and 16b are formed with locking teeth 26a and 26b (hereinafter simply referred to as locking teeth 26 unless otherwise distinguished) that are fitted in the tooth grooves 24 of the parking gear 14, respectively. Yes. That is, a locking tooth 26a, which is a convex portion (protruding portion) provided so as to protrude toward the parking gear 14, is formed at a substantially central portion in the longitudinal direction of the parking pole 16a. The substantially central portion in the longitudinal direction of the parking pole 16b is formed with a locking tooth 26b which is a convex portion (protruding portion) provided so as to protrude toward the parking gear 14 side. The parking pole 16 is provided with a sliding contact portion 40 (see FIG. 2) to be slidably contacted with a parking lock cam 36, which will be described later, and a return spring 42 (corresponding to the parking pole 16a in FIG. 1). The parking pawl 16b is omitted), and the non-parking lock position, that is, the locking tooth 26 is always urged toward the position where the parking gear 14 does not engage with the tooth groove 24. .

  The shift switching device 18 includes a shaft member 30 that is rotationally driven by an actuator (not shown), and a cam surface that is positioned at a parking lock position and a non-parking lock position at an outer peripheral edge portion. The detent member 32 is fixed so as not to rotate relative to the shaft member 30 and can be rotated as the shaft member 30 rotates. The detent member 32 is urged toward the cam surface of the detent member 32 and is pressed against the cam surface. In addition, an engagement member 34 that is selectively engaged with a parking lock position and a non-parking lock position on the cam surface, and parking lock cams 36a and 36b provided corresponding to the plurality of parking poles 16a and 16b, respectively. (Hereinafter referred to simply as parking lock cam 36 unless otherwise specified) Parking rod 38a which respectively connect between the cement member 32 and the plurality of parking lock cam 36, 38b (hereinafter, simply referred to as the parking rod 38 when not particularly distinguished) and comprises.

  The plurality of parking rods 38 are, for example, substantially L-shaped in a plan view (when FIG. 1 is viewed from the upper side to the lower side), and the base end portion pivots on the detent member 32. Connected as possible. The parking lock cams 36a and 36b are fitted to the distal ends of the parking rods 38a and 38b, that is, the ends opposite to the base ends, respectively, so as to be movable in the longitudinal direction. The parking lock cam 36 is slidably moved with respect to a sliding contact portion 40 (see FIG. 2) formed on the parking pole 16. A sleeve (not shown) is fixed to the case 12, and the parking lock cam 36 is inserted between the parking pole 16 and the sleeve, and between the parking pole 16 and the sleeve. It is possible to move between a disengagement position that is not inserted into the device.

  The parking lock cam 36 includes a cam surface on a side peripheral portion (side peripheral surface). This cam surface is preferably formed in a tapered shape whose diameter is gradually reduced in the advancing direction when the parking lock cam 36 is inserted between the parking pole 16 and the sleeve. A pressure spring (not shown) that urges the parking lock cam 36 with a preset preload toward a tip stopper (not shown) is fixed to a predetermined position of the parking rod 38 at the tip of the parking rod 38. Further, it is inserted between a spring receiver (not shown) and the parking lock cam 36. The parking lock cam 36 configured as described above is supported so as to be movable in the longitudinal direction of the parking rod 38 (axial direction in the vicinity of the parking lock cam 36). The sleeve is slidably moved.

  The engagement member 34 is preferably a plate spring having a long flat plate shape, and one end of the engagement member 34 opposite to the cam surface of the detent member 32 is fixed to the case 12. Yes. An engaging portion 44 is provided at one end of the engaging member 34. The engaging portion 44 is always urged toward the cam surface of the detent member 32 with a predetermined pressing force and is brought into pressure contact with the cam surface. The engaging portion 44 is a roller that is supported at the distal end portion of the engaging member 34 so as to be able to rotate about an axis parallel to the rotational axis of the detent member 32. By this, basically, The detent member 32 is positioned at the parking lock position by the engagement portion 44 falling to the first position on the cam surface of the detent member 32, and the detent member 32 is moved to the non-parking lock position by falling to the second position. It is configured to be positioned.

  FIG. 2 is an enlarged view showing a part of the plurality of parking poles 16 provided in the parking lock device 10. In FIG. 2, the configuration related to the shift switching device 18 is omitted. As described above, the parking poles 16a and 16b are installed side by side on the rotation shaft 28 which is a common rotation shaft (rotation center). That is, it can be rotated around the rotation shaft 28 independently. The parking poles 16a and 16b are independently driven by the parking lock cams 36a and 36b. That is, when the parking lock cam 36a is in the insertion position where the parking lock cam 36a is inserted between the parking pawl 16a and the sleeve, the parking lock cam 36a moves to the parking gear 14 with the rotation shaft 28 as a rotation center. It is rotated in the approaching direction, that is, the direction in which the locking tooth 26 a is fitted in the tooth gap 24. When the parking lock cam 36b is in the insertion position where it is inserted between the parking pole 16b and the sleeve, the parking lock cam 36b approaches the parking gear 14 about the rotation shaft 28 as a rotation center. The direction, that is, the direction in which the locking tooth 26 b is fitted in the tooth groove 24 is rotated. The thickness dimension of the parking gear 14 (the axial dimension of the rotating shaft 28) is such that at least the locking teeth 26a and 26b are fitted in the tooth grooves 24 between the outer peripheral teeth 22. That is, the thickness dimension of the parking gear 14 is not less than the thickness dimension of the parking poles 16a and 16b installed side by side (the total thickness dimension of the two parking poles 16).

  As shown in FIG. 2, the locking teeth 26 formed on each of the plurality of parking poles 16 are offset from each other by the width dimension of the locking teeth 26 with respect to the longitudinal position of the parking pole 16 (offset). )). In other words, the parking lock device 10 according to the present embodiment includes two parking poles 16 that are installed with respect to the parking gear 14 in a positional relationship in which the locking teeth 26 are shifted by the width of the teeth. That is, as shown in FIG. 2, when the locking teeth 26 a and 26 b are arranged in the longitudinal direction of the parking pole 16, the locking teeth 26 a and 26 b are arranged in the longitudinal direction of the parking pole 16. The positions are shifted from each other by the width dimension. The locking teeth 26a and 26b are formed at positions shifted from each other by at least the width dimension d at the tip of the locking teeth 26, that is, the portion of the locking portion 26 closest to the parking gear 14. is there. In other words, the locking teeth 26 a and 26 b are formed at relative positions where at least the respective tooth tips do not overlap with each other in the longitudinal direction of the parking pole 16. Here, FIG. 2 shows a mode in which the widths of the tooth tips of the locking teeth 26 a and 26 b are both equal d, but the locking teeth 26 a and 26 b are both fitted in the tooth groove 24. As long as the durability is sufficient to prevent rotation of the parking gear 14, the width may not necessarily be equal.

  As described above, the parking lock device 10 of the present embodiment is a shift-by-wire parking device that prevents rotation of the output shaft 20 by electrical control in accordance with a parking brake operation by the driver. In such a shift-by-wire parking device, a range switching command is output from an electronic control device (not shown) in response to a parking brake operation by the driver, and the actuator is operated in response to the range switching command. That is, when a command to switch to the parking range is issued, the actuator is driven so that the detent member 32 is positioned at the parking lock position. When a command to switch to a non-parking range (a range other than the parking range) is issued, the actuator is driven so that the detent member 32 is positioned at the non-parking lock position.

  That is, when the shaft member 30 is rotated in a predetermined direction by the actuator from a state in which the locking teeth 26a and 26b are not retracted into the tooth groove 24, the shaft member 30 and The integrally provided detent member 32 is rotated in the same direction, and the parking rod 38 is extended in a direction to push out the parking lock cam 36 toward the parking pole 16 side. As a result, the parking lock cam 36 is pushed out to the parking pole 16 side by the biasing force of the preload spring, and is inserted between the parking lock pole 16 and the sleeve and brought into contact with them. The When either one of the parking lock cams 36a and 36b is set to the insertion position, the parking pole 16 corresponding to the parking lock cam 36 that is set to the insertion position is separated from the sleeve. The parking pole 16 is rotated to the parking gear 14 side. As a result, the locking teeth 26 of the rotated parking pole 16 are fitted (engaged) with the tooth grooves 24 of the parking gear 14, and the output shaft connected to the parking gear 14. The rotation of 20 and thus the rotation of the driving wheel (not shown) are suppressed.

  When the shaft member 30 is rotated in a direction opposite to the predetermined direction by the actuator from a state in which any one of the locking teeth 26a and 26b is in an engagement position where the engagement teeth are fitted in the tooth groove 24, The detent member 32 provided integrally with the shaft member 30 is rotated in the same direction, and the parking rod 38 is extracted in a direction opposite to the direction in which the parking lock cam 36 is pushed out to the parking pole 16 side. . As a result, the parking lock cam 36 is brought into the disengaged position where it is pulled out from between the parking pole 16 and the sleeve. Since the parking lock cams 36 a and 36 b are both in the disengaged position, the parking pole 16 moves toward a position where the locking teeth 26 do not fit into the tooth groove 24 due to the urging force of the return spring 42. Is rotated. When the parking poles 16a and 16b are both in the retracted position, that is, in a parking lock release state, the output shaft 20 connected to the parking gear 14 is allowed to rotate (free rotation), and as a result, illustrated. The rotation of the drive wheels that are not allowed is allowed.

  5 and 6 are diagrams for explaining the configuration of a conventional parking lock device 50 for vehicles (hereinafter simply referred to as the parking lock device 50) for comparison with the parking lock device 10 of the present embodiment. . In FIGS. 5 and 6, the same reference numerals are given to the configurations common to the parking lock device 10 of the above-described embodiment, and the description thereof is omitted. 5 and 6, as a conventional parking lock device for vehicles, a single locking tooth 26 that is fitted in the tooth gap 24 between the outer peripheral teeth 22 of the parking gear 14 is formed. The parking lock apparatus 50 provided with this parking pole 16 is illustrated. In such a conventional parking lock device 50, when the parking brake operation is performed by the driver, the locking teeth 26 on the parking pole 16 are caused to move by the phase of the parking gear 14 with respect to the parking pole 16. A non-engagement state where the gear 14 is not fitted in the tooth gap 24 between the outer peripheral teeth 22 or a meshed state where the gear 14 is fitted. That is, in the state (phase) as shown in FIG. 5, when the parking pole 16 is lifted and contacts the parking gear 14 in conjunction with the parking brake operation by the driver, the locking teeth on the parking pole 16 are obtained. 26 is brought into contact with the outer peripheral teeth 22 of the parking gear 14, and the locking teeth 26 do not mesh with the tooth spaces 24 between the outer peripheral teeth 22. In the state (phase) as shown in FIG. 6, when the parking pole 16 is lifted in conjunction with the parking brake operation by the driver, the locking teeth 26 on the parking pole 16 are moved to the outer peripheral teeth on the parking gear 14. It meshes with the tooth gap 24 between 22. That is, in the parking lock device 50, when the parking brake operation by the driver is in the state shown in FIG. 5, the parking gear 14 rotates and the phase of the parking gear 14 with respect to the parking pole 16 changes. For example, until the state shown in FIG. 6 is reached, the locking teeth 26 in the parking pole 16 are not fitted into the tooth spaces 24 between the outer peripheral teeth 22 in the parking gear 14, and the parking brake is completed. do not do.

  For example, when the phase of the parking gear 14 with respect to the parking pole 16 is in the state shown in FIG. 5 when the vehicle to which the parking lock device 50 is applied is stopped on a slope, as shown in FIG. The parking gear 14 is rotated until the phase shown in FIG. At this time, since the output shaft 20 connected to the parking gear 14 is rotated, the vehicle falls (forwards or reverses) and a vehicle speed is generated. When the parking gear 14 is rotated from the state shown in FIG. 5 to the state shown in FIG. 6, the locking teeth 26 in the parking pole 16 are teeth between the outer peripheral teeth 22 in the parking gear 14. The rotation of the parking gear 14 is prevented by being fitted in the groove 24, but since the vehicle speed is generated, an impact (load) is generated when the locking tooth 26 is engaged with the tooth groove 24. And the impact is input to the parking pole 16 and the case 12. Further, when the parking lock device 50 is a shift-by-wire device, in addition to the time required for the rotation (phase change) of the parking gear 14, a control time (response) according to the parking brake operation by the driver. Time) and the time required for the operation of the actuator. For this reason, after the vehicle speed becomes relatively large, the locking teeth 26 are engaged with the tooth grooves 24, and there is a possibility that the impact that is input to the parking pole 16 and the case 12 becomes large. is there.

  From the above situation, in the parking lock device 50, the roll away amount and the ratchet performance are problematic. The roll away amount is, for example, an amount by which the vehicle can move (amount of movement) before the locking teeth 26 are engaged with the tooth gap 24 in a parking range. . If the amount of roll away is large, there is a risk of misunderstanding or dissatisfaction that the driver has started unintentionally. In particular, in a hybrid vehicle, the vehicle moves even during a so-called P charge (a mode in which the engine is started and the motor generates electricity while the vehicle is stopped), so that it is easy to give a misunderstanding or dissatisfaction that the vehicle has started unintentionally. The ratchet performance refers to the outer periphery of the parking gear 14 when the parking pole 16 does not mesh with the parking gear 14 when the vehicle is switched to the parking range with a relatively high vehicle speed due to an erroneous operation (misshift, etc.) by the driver. This refers to the performance of a vehicle parking lock device that operates so as to engage only when the vehicle speed is controlled by repeating collision and repulsion, and when the vehicle speed falls below a certain speed. In order to improve the ratchet performance in the configuration including the single parking pole 16 as in the conventional parking lock device 50, the landing point at the time of the collision of the locking teeth 26 with the parking gear 14 is increased. In order to prevent the locking teeth 26 from entering the inner periphery of the parking gear 14, the number of the outer peripheral teeth 22 in the parking gear 14 is reduced, and the tooth width per tooth (the width in the circumferential direction) is reduced. It is necessary to take measures such as increasing the dimension). High gears are required to improve high-speed fuel consumption, but the amount of rollaway increases as a contradiction to the high gears. In order to reduce the roll away amount, the number of teeth of the outer peripheral teeth 22 in the parking gear 14 may be increased, but ratchet performance deteriorates as a contradiction. That is, in the vehicle to which the parking lock device 50 is applied, it is necessary to sacrifice one of the improvement of high speed fuel consumption, the reduction of the roll away amount, and the improvement of the ratchet performance, and it is difficult to realize all of them. is there. In addition, it is necessary to ensure a sufficient strength with respect to the case 12, and there is a limit to reducing the thickness of the case 12.

  On the other hand, as described above, in the parking lock device 10 of the present embodiment, a plurality of parking poles 16a in which the locking teeth 26 that are fitted in the tooth grooves 24 between the outer peripheral teeth 22 of the parking gear 14 are formed. 16b, and the locking teeth 26 formed on each of the plurality of parking poles 16a, 16b are shifted from each other by the width dimension d of the locking teeth 26 with respect to the longitudinal position of the parking pole 16. Is formed. The parking poles 16a and 16b can rotate independently about the rotation shaft 28, and the parking rods 38a and 38b and the parking lock cams 36a and 36b are operated in conjunction with the parking brake operation by the driver. It is driven by. Even if the locking teeth 26 formed on either of the parking poles 16a and 16b are fitted in the tooth spaces 24 between the outer peripheral teeth 22, the parking gear 14 can be prevented from rotating. With such a configuration, as shown in FIG. 3, a phase where the tip of the locking tooth 26 b in the parking pole 16 b is brought into contact with the tip of the outer peripheral tooth 22 and is not fitted in the tooth gap 24. The engaging teeth 26a of the parking pole 16a are fitted in the tooth spaces 24 between the outer peripheral teeth 22. On the contrary, as shown in FIG. 4, in the phase in which the tooth tip of the locking tooth 26 a in the parking pole 16 a is brought into contact with the tooth tip of the outer peripheral tooth 22 and is not fitted in the tooth groove 24. The locking teeth 26b of the parking pole 16b are fitted in the tooth spaces 24 between the outer peripheral teeth 22. That is, when the parking pole 16 is lifted in contact with the parking brake operation by the driver and comes into contact with the parking gear 14, the locking is more effective than the conventional parking lock device 50 described above with reference to FIGS. The chance that the teeth 26 are fitted in the tooth spaces 24 between the outer peripheral teeth 22 can be increased.

  That is, in the vehicle to which the parking lock device 10 of the present embodiment is applied, for example, when the vehicle stops on a slope, the vehicle is operated until the parking gear 14 is prevented from rotating after the parking brake operation is performed by the driver. It is possible to make the amount of travel, i.e., the roll away amount smaller than in the prior art. Specifically, as described above with reference to FIGS. 5 and 6, the roll away amount is reduced by about half compared to the conventional parking lock device 50 including the parking gear 14 equivalent to the parking lock device 10. it can. As a result, after the parking brake operation by the driver is performed, the parking gear 14 is prevented from rotating while the vehicle speed is sufficiently low (before the vehicle speed increases), the rotation of the output shaft 20 and the rotation of the vehicle. The fall can be stopped. Therefore, in addition to reducing the impact (load) when the locking teeth 26 are engaged with the tooth grooves 24, misunderstanding and dissatisfaction that the driver has started unintentionally can be reduced. Further, even if the gear is made high and the number of the outer peripheral teeth 22 in the parking gear 14 is reduced, the amount of roll away can be reduced to half that of the prior art, so that high speed fuel consumption and ratchet performance can be improved. Since the impact when the locking teeth 26 are engaged with the tooth grooves 24 can be reduced, the strength condition to be guaranteed is reduced, and the case 12 can be made thinner. That is, in the vehicle to which the parking lock device 10 of the present embodiment is applied, all of them can be realized without sacrificing any improvement in high speed fuel consumption, reduction in roll away amount, and improvement in ratchet performance. It becomes possible.

  Thus, according to the present embodiment, the parking gear 14 having a plurality of outer peripheral teeth 22 formed on the outer peripheral portion, and the locking teeth fitted into the tooth grooves 24 between the outer peripheral teeth 22 of the parking gear 14. The parking lock device 10 includes a plurality of parking poles 16a and 16b formed with a plurality of parking poles 16a and 16b, and the plurality of parking poles 16a and 16b are arranged in the axial direction of the rotation shaft 28. The locking teeth 26a and 26b formed on the respective 16a and 16b are formed at positions shifted from each other by the width dimension d of the locking teeth 26 with respect to the longitudinal position of the parking poles 16a and 16b. Therefore, the parking pole 16 is lifted in conjunction with the parking brake operation by the driver, and the parking gear 14 When touched, there is an increased chance that the locking teeth 26 of the parking pole 16 are engaged with the tooth grooves 24 of the parking gear 14, so that the engagement between the parking gear 14 and the parking pole 16 is realized quickly. it can. That is, it is possible to provide the parking lock device 10 that suppresses the occurrence of a time difference from the parking brake operation by the driver to the completion of the parking brake.

  The preferred embodiments of the present invention have been described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. To be implemented.

  DESCRIPTION OF SYMBOLS 10: Parking lock apparatus for vehicles, 14: Parking gear, 16: Parking pole, 22: Peripheral tooth, 24: Tooth groove, 26: Locking tooth, 28: Turning axis

Claims (1)

A parking gear having a plurality of outer peripheral teeth formed on an outer peripheral portion; and a plurality of parking poles having locking teeth that are fitted in tooth spaces between the outer peripheral teeth of the parking gear. A parking lock device for a vehicle in which parking poles are installed side by side in the axial direction of the rotating shaft,
The locking teeth formed on each of the plurality of parking poles are formed at positions shifted from each other by a width dimension of the locking teeth with respect to the longitudinal position of the parking pole. Parking lock device for vehicles.

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