CN110081166B - Parking lock mechanism of drive device - Google Patents

Parking lock mechanism of drive device Download PDF

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Publication number
CN110081166B
CN110081166B CN201910058553.5A CN201910058553A CN110081166B CN 110081166 B CN110081166 B CN 110081166B CN 201910058553 A CN201910058553 A CN 201910058553A CN 110081166 B CN110081166 B CN 110081166B
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CN
China
Prior art keywords
parking
space
housing
shaft
pawl
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Application number
CN201910058553.5A
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Chinese (zh)
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CN110081166A (en
Inventor
菅野知
盐入康司
伊藤考人
筒井麻有子
鸿池茂辉
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Suzuki Motor Corp
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Suzuki Motor Corp
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Publication of CN110081166A publication Critical patent/CN110081166A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/005—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles by locking of wheel or transmission rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
    • F16D63/006—Positive locking brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02026—Connection of auxiliaries with a gear case; Mounting of auxiliaries on the gearbox

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

Provided is a parking lock mechanism of a drive device which can be effectively arranged in a space in a housing having different depths. The parking lock mechanism (31) is provided with: a 1 st retainer (41) disposed across the 1 st space (24) and the 2 nd space (25), disposed on the front side of the parking pawl (32) in the depth direction of the left housing (2), and supporting the parking pawl shaft (33) and the bearing member (36); and a 2 nd retainer (42) provided in the 2 nd space (25) and provided on the rear side of the parking pawl (32) in the depth direction of the left housing (2). The left housing (2) has a boss portion (51), the boss portion (51) protrudes from the far left vertical wall (5) in the depth direction in the 1 st space (24) to the side of the 2 nd retainer (42) to support the parking pawl shaft (33), and the parking pawl shaft (33) is supported by the boss portion (52) and the 1 st retainer (41).

Description

Parking lock mechanism of drive device
Technical Field
The present invention relates to a parking lock mechanism of a drive device.
Background
Patent document 1 discloses a parking lock mechanism of a drive device. The parking lock mechanism moves the parking lever in the axial direction, and moves a cam member provided at the tip end of the parking lever between the support member and the parking pawl.
At this time, the parking pawl swings about the parking pawl shaft, and the pawl portion of the parking pawl is fitted to the tooth portion of the parking lock gear, thereby restricting the rotation of the parking lock gear.
The parking lock mechanism is housed in a space in a case having a side wall having a flat shape and a peripheral wall portion protruding outward from the side wall. The parking pawl shaft is supported by the side wall, and the support member is supported by the side wall via the guide member.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2016-102510
Disclosure of Invention
Problems to be solved by the invention
In such a conventional parking lock mechanism, the parking pawl shaft or the guide member is supported by a support portion disposed on a side wall having a flat shape. On the other hand, when the side wall is curved in the depth direction of the housing, it is difficult to provide the parking pawl shaft or the support portion of the guide member in a deep portion.
Further, the support portion disposed in the deep portion becomes large, and it is difficult to effectively utilize the space in the housing to store the components constituting the parking lock mechanism, such as the parking pawl and the support member, in the housing.
In view of the above circumstances, an object of the present invention is to provide a parking lock mechanism of a drive device that can be effectively disposed in a space in a housing having different depth variations.
Means for solving the problems
The parking lock mechanism of the driving device of the invention comprises: a housing having a 1 st space and a 2 nd space, wherein the depth of the 1 st space is small and the depth of the 2 nd space is larger than the depth of the 1 st space when a joint portion for joining the housing members is taken as a starting point, the housing supporting a rotating shaft and enabling the rotating shaft to rotate freely; a parking gear having a tooth portion, fitted to the rotary shaft and rotating together with the rotary shaft; a support shaft accommodated in the 1 st space and assembled to the housing; a parking pawl provided so as to straddle the 1 st space and the 2 nd space, having a pawl portion engaged with the tooth portion, supported by the support shaft, and swingably movable; a parking lever having a cam member and provided to be movable in the 2 nd space in the axial direction; a support member which is accommodated in the 2 nd space, moves to the support shaft in accordance with the movement of the parking lever, and swings the parking pawl so that the claw portion engages with the tooth portion; and a coupling member that couples the support shaft and the support member to the housing, wherein the coupling member includes: a 1 st coupling member that is provided across the 1 st space and the 2 nd space, is provided on a front side of the parking pawl in a depth direction of the housing, and supports the support shaft and the support member; and a 2 nd coupling member provided in the 2 nd space and provided on a rear side of the parking pawl in a depth direction of the housing, wherein the housing has a boss portion for a support shaft that protrudes from a longitudinal wall on a far side in the depth direction in the 1 st space to a side of the 2 nd coupling member to support the support shaft, and the support shaft is supported by the boss portion for the support shaft and the 1 st coupling member.
Effects of the invention
According to the present invention described above, the parking lock mechanism can be efficiently provided in the space in the housing having different depths.
Drawings
Fig. 1 is a perspective view of a driving device of a parking lock mechanism according to an embodiment of the present invention.
Fig. 2 is an inside view of a driving device of the parking lock mechanism of the embodiment of the invention.
Fig. 3 is a sectional view taken along the direction III-III in fig. 2, showing a state in which the input shaft is removed.
Fig. 4 is a sectional view in the direction IV-IV of fig. 2.
Fig. 5 is a right side view of the parking lock mechanism of the embodiment of the invention.
Fig. 6 is a left side view of the parking lock mechanism of the embodiment of the invention.
Fig. 7 is a bottom view of the parking lock mechanism according to the embodiment of the present invention.
Fig. 8 is a sectional view taken in the direction VIII-VIII of fig. 6 in a state where the parking lock mechanism is housed in the housing, and shows a parking lock state.
Fig. 9 is an inside view of the driving device of the parking lock mechanism according to the embodiment of the present invention, showing an assembled state of the 2 nd retainer.
Fig. 10 is an inside view of the driving device of the parking lock mechanism of the embodiment of the present invention, showing a positional relationship of boss portions to which the 1 st retainer and the 2 nd retainer are fixed.
Fig. 11 is a sectional view taken in the direction VIII-VIII of fig. 6 in a state where the parking lock mechanism is housed in the housing, and shows a parking lock released state.
Description of the reference numerals
1: a drive device; 2: a left housing (shell); 3A: 1 st joint portion (joint portion); 3B: the 2 nd joint (joint); 4: a right housing (housing member); 5: a left vertical wall (a vertical wall on the far side in the depth direction); 16: an intermediate shaft (rotating shaft); 18: a parking gear; 18A: a tooth portion; 24: 1 st space; 25: a 2 nd space; 31: a parking lock mechanism; 32: a parking pawl; 32A: a claw portion; 33: a parking pawl shaft (support shaft); 34: a return spring (urging member); 35: a parking rod; 36: a support member; 41: the 1 st retainer (connecting member, 1 st connecting member); 42: a 2 nd holder (a connecting member, a 2 nd connecting member); 43: a cam member; 51: a boss portion (boss portion for support shaft); 51A: a small diameter part; 52. 53: a boss portion (1 st fixing portion); 54. 55: boss portion (2 nd fixing portion).
Detailed Description
A parking lock mechanism of a drive device according to an embodiment of the present invention includes: a housing having a 1 st space and a 2 nd space, wherein the depth of the 1 st space is smaller than the depth of the 2 nd space when a joint portion for joining the housing members is taken as a starting point, and the housing supports the rotating shaft and enables the rotating shaft to rotate freely; a parking gear having a tooth portion, fitted to the rotation shaft and rotated together with the rotation shaft; a support shaft which is accommodated in the 1 st space and assembled to the housing; a parking pawl provided so as to straddle the 1 st space and the 2 nd space, having a pawl portion engaged with the tooth portion, supported by the support shaft, and swingably swinging; a parking lever having a cam member and provided to be movable in the 2 nd space in the axial direction; a support member accommodated in the 2 nd space, the cam member moving onto the support member in accordance with the movement of the parking lever, and the parking pawl being swung so that the pawl portion engages with the tooth portion; and a coupling member that couples the support shaft and the support member to the housing, in the parking lock mechanism of the drive device, the coupling member including: a 1 st coupling member provided across the 1 st and 2 nd spaces, provided on a front side of the parking pawl in a depth direction of the housing, and supporting the support shaft and the bearing member; and a 2 nd coupling member provided in the 2 nd space and provided on a rear side of the parking pawl in a depth direction of the housing, the housing having a boss portion for a support shaft protruding from a longitudinal wall on a far side in the depth direction in the 1 st space to a side of the 2 nd coupling member, the support shaft being supported by the boss portion for the support shaft and the 1 st coupling member.
Thus, the parking lock mechanism can be efficiently disposed in a space in the housing having different depths.
[ examples ]
Hereinafter, a parking lock mechanism of a drive device according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 to 11 show a parking lock mechanism of a drive device according to an embodiment of the present invention. In fig. 1 to 11, the vertical, front, rear, left, and right directions are based on a driving device in a state of being installed in a vehicle, and a direction orthogonal to the front-rear direction is a left-right direction, and a height direction of the driving device is a vertical direction.
First, the configuration is explained.
In the example shown in fig. 1, the drive device is mounted on a vehicle, and decelerates a motor (not shown) for driving the vehicle and transmits the decelerated motor to a drive wheel (not shown). The drive device 1 includes a left housing 2.
The left case 2 is provided with a 1 st engaging portion 3A and a 2 nd engaging portion 3B on the outer peripheral edge thereof, and the 1 st engaging portion 3A and the 2 nd engaging portion 3B are engaged with an engaging portion 4A provided on the outer peripheral edge of the right case 4 (see fig. 4).
Further, the joint portion 4A also extends in the front-rear direction and the up-down direction of the right case 4, as with the 1 st joint portion 3A and the 2 nd joint portion 3B. The 1 st joint part 3A and the 2 nd joint part 3B of the present embodiment constitute the joint part of the present invention.
The left and right cases 2 and 4 are integrated by fixing the 1 st joint portion 3A and the 2 nd joint portion 3B to the joint portion 4A with bolts (not shown) in a state where the 1 st joint portion 3A and the 2 nd joint portion 3B are aligned with the joint portion 4A.
Thus, the interior of the drive device 1 forms a space sealed by the left and right cases 2 and 4. The left case 2 of the present embodiment constitutes a case of the present invention, and the right case 4 constitutes a case member of the present invention.
The 1 st joint part 3A extends in the lateral direction of the left housing 2, i.e., the front-rear direction, and the direction in which the 1 st joint part 3A extends is the 1 st direction of the present invention. The 2 nd joint 3B extends in the vertical direction, which is the longitudinal direction of the left housing 2 and is a direction different from the 1 st joint 3A, and the direction in which the 2 nd joint 3B extends is the 2 nd direction.
A left vertical wall 5 is provided on the far side (left side) in the depth direction of the left housing 2. The left vertical wall 5 of the present embodiment constitutes the far side vertical wall in the depth direction of the present invention.
The left housing 2 has a rear vertical wall 7, and the rear vertical wall 7 extends rightward from the rear end of the left vertical wall 5 (see fig. 4). The left housing 2 has a front vertical wall 8, and the front vertical wall 8 extends rightward from the front end of the left vertical wall 5.
Left case 2 has upper wall 9 (see fig. 3), and upper wall 9 extends rightward from the upper end of left vertical wall 5, and connects the upper end of rear vertical wall 7 and the upper end of front vertical wall 8.
The left housing 2 has a bottom wall 10 (see fig. 3), and the bottom wall 10 extends rightward from the lower end of the left vertical wall 5 and connects the lower end of the rear vertical wall 7 and the lower end of the front vertical wall 8. Thus, a space 11 surrounded by the left vertical wall 5, the rear vertical wall 7, the front vertical wall 8, the upper wall 9, and the bottom wall 10 is formed inside the left housing 2.
In fig. 1 and 2, a bearing support portion 12 is formed on the left vertical wall 5, and the bearing support portion 12 extends proximally from the left vertical wall 5. One end in the axial direction of the input shaft 14 is rotatably supported by the bearing support portion 12 via a bearing 13.
The other end in the axial direction of the input shaft 14 is rotatably supported by a bearing support portion (not shown) provided in the right housing 4 via a bearing 26A. Thus, the input shaft 14 is rotatably supported by the left and right housings 2 and 4.
An input gear 15 is provided on the input shaft 14, and the input gear 15 rotates together with the input shaft 14.
A bearing support portion (not shown) is formed in the left vertical wall 5, and the bearing support portion 12 are aligned in a row in the front-rear direction. One end portion in the axial direction of the intermediate shaft 16 is rotatably supported by the bearing support portion via a bearing (not shown). The intermediate shaft 16 of the present embodiment constitutes the rotating shaft of the present invention.
The intermediate shaft 16 is provided parallel to the input shaft 14, and the other end portion in the axial direction of the intermediate shaft 16 is rotatably supported by a bearing support portion (not shown) provided in the right housing 4 via a bearing 26B.
Thus, the intermediate shaft 16 is rotatably supported by the left and right housings 2 and 4. The axial direction of the input shaft 14 and the intermediate shaft 16 refers to a direction in which the input shaft 14 and the intermediate shaft 16 extend (the left-right direction, the depth direction of the left housing 2).
The counter shaft 16 is provided with a counter gear 17, a parking gear 18, and a final drive gear 19, and the counter gear 17, the parking gear 18, and the final drive gear 19 rotate together with the counter shaft 16. The counter gear 17 is formed to have a diameter larger than that of the input gear 15 and meshes with the input gear 15.
A differential device 20 is provided on the opposite side of the intermediate shaft 16 from the input shaft 14. The differential device 20 includes: a differential case 21; a final driven gear 22 provided on an outer peripheral portion of the differential case 21; and a differential mechanism 23 housed in the differential case 21.
The differential case 21 has an output shaft 21A on the right side, and the output shaft 21A is rotatably supported by a bearing support portion (not shown) provided in the right case 4 via a bearing (not shown).
The differential case 21 has an output shaft (not shown) on the left side, and the output shaft is rotatably supported by a bearing support (not shown) provided on the left vertical wall 5 through a bearing. Thus, the differential case 21 is rotatably supported by the left case 2 and the right case 4.
The final driven gear 22 is formed to have a diameter larger than that of the final drive gear 19, and meshes with the final drive gear 19.
One end portions of left and right drive shafts (not shown) are inserted through the right output shaft 21A and the left output shaft, respectively, and the one end portions of the left and right drive shafts are coupled to the differential mechanism 23.
The other end portions of the left and right drive shafts are coupled to drive wheels (not shown), respectively, and the differential mechanism 23 distributes power to the left and right drive shafts.
The power transmission of the drive device 1 is such that, when the driving force of a motor (not shown) is transmitted to the input shaft 14, the power is transmitted from the input gear 15 to the counter shaft 16 through the counter gear 17, and then the power is transmitted from the final drive gear 19 to the final driven gear 22.
The differential case 21 is thereby rotated, and the power of the motor is transmitted to the left and right drive wheels via the left and right drive shafts by the differential mechanism 23. As a result, the vehicle travels.
In fig. 4, a recess 29 bulging farther (leftward) than the left vertical wall 5 is formed in the left vertical wall 5. Thus, the left housing 2 has: a 1 st space 24 having a small depth from the 1 st joint 3A and the 2 nd joint 3B to the left vertical wall 5; and a 2 nd space 25 having a depth larger than that of the 1 st space 24 from the 1 st joint 3A and the 2 nd joint 3B to the recess 29.
In fig. 4, reference numerals 24S and 25S denote ranges forming the 1 st space 24 and the 2 nd space 25. Further, the space including the 1 st space 24 and the 2 nd space 25 is the space 11 of the left housing 2.
In fig. 1 and 2, a parking lock mechanism 31 is housed in the left housing 2. The parking lock mechanism 31 includes a parking gear 18, a parking pawl 32, a parking pawl shaft 33, a return spring 34 (see fig. 9 and 10), and a parking rod 35 (see fig. 4).
The parking lock mechanism 31 further includes a support member 36 (see fig. 4), a manual shaft 37, a stopper plate 38, a stopper spring 39, a manual plate 40, a 1 st retainer (retainer)41, and a 2 nd retainer 42.
In the parking lock mechanism 31, all the components constituting the parking lock mechanism 31 are housed in the left housing 2.
The parking gear 18 is provided in the 1 st space 24 and between the counter gear 17 and the final drive gear 19 in the extending direction of the counter shaft 16 (see fig. 1). The plurality of tooth portions 18A are provided at equal intervals in the circumferential direction on the outer peripheral portion of the parking gear 18.
The parking pawl 32 is supported by the left vertical wall 5 via a parking pawl shaft 33 and is swingable about the parking pawl shaft 33.
In fig. 1 and 2, a pawl portion 32A is formed on the parking pawl 32. When the parking pawl 32 swings in one direction about the parking pawl shaft 33, the pawl portion 32A engages with the tooth portion 18A of the parking gear 18.
When the parking pawl 32 swings in the other direction about the parking pawl shaft 33, the engagement between the pawl portion 32A and the tooth portion 18A is released.
Thus, the parking pawl 32 swings between an engagement position where the pawl portion 32A engages with the tooth portion 18A and a release position where the engagement of the pawl portion 32A with the tooth portion 18A is released.
When the pawl portion 32A engages with the tooth portion 18A, the rotation of the parking gear 18 is restricted, and the rotation of the intermediate shaft 16 is restricted. Since the final drive gear 19 of the counter shaft 16 is meshed with the final driven gear 22 of the differential device 20, when the rotation of the parking gear 18 is restricted, the rotation of the final driven gear 22 is restricted. As a result, the rotation of the drive wheels by the drive shaft is restricted, and the parking of the vehicle can be maintained.
In fig. 4, a boss portion 51 is provided on the left vertical wall 5 of the left housing 2 located in the 1 st space 24, and the parking pawl shaft 33 is supported by the boss portion 51. The parking pawl shaft 33 of the present embodiment constitutes a support shaft of the present invention, and the boss portion 51 constitutes a boss portion for a support shaft of the present invention.
A small diameter portion 51A is formed at a distal end portion of the boss portion 51 in the protruding direction, and the small diameter portion 51A is formed to have a diameter smaller than a base portion side (distal side) of the boss portion 51. The far side is the left vertical wall 5 side with respect to the 1 st joint 3A and the 2 nd joint 3B, and the near side is the 1 st joint 3A and the 2 nd joint 3B side with respect to the left vertical wall 5.
The return spring 34 includes a winding portion 34A (see fig. 7) wound around the small diameter portion 51A, and the winding portion 34A is provided on an outer peripheral portion of the small diameter portion 51A (see fig. 6 and 10). In fig. 10, the return spring 34 has a 1 st wall portion 34B and a 2 nd wall portion 34C.
In fig. 2 and 9, the 1 st wall portion 34B contacts the projection 5A provided on the left housing 2, and the 2 nd wall portion 34C contacts the parking pawl 32 (see fig. 6).
The return spring 34 biases the parking pawl 32 such that the parking pawl 32 swings in the other direction about the parking pawl shaft 33, that is, the pawl portion 32A moves downward.
Thereby, the parking pawl 32 is urged by the return spring 34 to swing from the engaging position to the releasing position. The return spring 34 of the present embodiment constitutes the urging member of the present invention.
In fig. 4, the parking lever 35 is provided in the 2 nd space 25. In fig. 8, the parking lever 35 has a linear portion 35A and a curved portion 35B. The linear portion 35A extends in the same direction as the axial direction of the input shaft 14 and the intermediate shaft 16, and the bent portion 35B is bent upward from the linear portion 35A and formed in an L-shape.
The parking rod 35 is movable in the 2 nd space 25 including the recess 29 along the axial direction of the input shaft 14 and the intermediate shaft 16. The axial direction of the parking rod 35 is the direction in which the linear portion 35A extends (the left-right direction, the depth direction of the left housing 2).
The recess 29 is formed in the left vertical wall 5 below the bearing support portion 12, and projects outward from the left vertical wall 5. The outward direction of the left vertical wall 5 is the left direction on the opposite side of the 1 st joint 3A and the 2 nd joint 3B with respect to the left vertical wall 5 in the axial direction of the input shaft 14.
In fig. 2 and 3, a recess 27 is formed in the left vertical wall 5 above the recess 29.
The recess 27 bulges outward beyond the left vertical wall 5. The recess 27 is formed to have a diameter larger than that of the manual shaft 37, and the manual shaft 37 has an arc shape curved around a middle portion 37c of the manual shaft 37 in the vertical direction, so that the manual shaft 37 can rotate.
A recess 28 is formed in the left vertical wall 5 above the recess 27, and the recess 28 bulges outward beyond the recess 27. The recess 29 bulges outward than the recess 28.
In fig. 4 and 8, a stopper portion 35A is formed on the curved portion 35B side of the linear portion 35A, and a cam spring 44 is provided between the cam member 43 and the stopper portion 35A. A stopper portion 35b is formed at the distal end of the linear portion 35A.
The cam spring 44 biases the cam member 43 toward the parking pawl 32, and retracts the cam member 43 when the cam member 43 receives an excessive force from the parking pawl 32.
The cam member 43 has a cam surface 43A in the extending direction of the linear portion 35A, and the cam surface 43A is formed in a shape that becomes thinner toward the parking pawl 32 side tip.
The bent portion 35B is fitted to the manual plate 40. In fig. 10, the manual plate 40 is attached to the lower end portion 37b side of the manual shaft 37 and is provided in the recess 29 in the 2 nd space 25.
The manual shaft 37 is provided in the recess 29 on the front vertical wall 8 side with respect to the bearing support portion 12 in the 2 nd space 25, and extends in the height direction of the left housing 2 so as to be orthogonal to the extending direction of the input shaft 14 and the intermediate shaft 16.
The upper end 37a of the manual shaft 37 is rotatably supported by the upper wall 9 of the left housing 2. The lower end portion 37b of the manual shaft 37 penetrates the bottom wall 10 of the left housing 2, protrudes downward from the bottom wall 10, and is rotatably supported by the bottom wall 10.
A lower end portion 37b of the manual shaft 37 is connected to one end portion of a parking cable (not shown) via a lever (lever) (not shown). The other end of the parking cable is connected to a parking lever (not shown).
The driver operates the parking lever to move to the position of any one of the parking gear and the non-parking gear. At this time, the manual shaft 37 rotates, and the manual plate 40 moves the parking lever 35 in the axial direction as the manual shaft 37 rotates.
In fig. 9, the support member 36 is provided in the 2 nd space 25. The support member 36 is provided below the parking pawl 32, and has a U-shaped cross section when viewed in the axial direction of the input shaft 14.
In fig. 8, the support member 36 has, on its upper surface: an inclined surface 36a that is inclined upward from the distal side toward the proximal side in the depth direction of the left housing 2; and a horizontal surface 36b extending horizontally from the inclined direction upper end of the inclined surface 36a toward the near side.
In the parking lock mechanism 31, when the shift lever is operated to the parking position by the driver, the manual shaft 37 rotates in one direction, and the manual plate 40 swings in one direction as the manual shaft 37 rotates.
At this time, the parking lever 35 moves to the parking pawl 32 side, and as shown in fig. 8, the cam member 43 moves from the inclined surface 36a of the support member 36 to the horizontal surface 36 b. When the cam member 43 moves onto the horizontal surface 36b, the cam member 43 pushes up the parking pawl 32 upward.
At this time, the parking pawl 32 swings in the counterclockwise direction of fig. 2 about the parking pawl shaft 33 against the urging force of the return spring 34.
Thereby, the claw portion 32A of the parking pawl 32 is fitted to the tooth portion 18A of the parking gear 18, and rotation of the parking gear 18 is restricted. In this state, the cam member 43 is positioned between the parking pawl 32 and the support member 36, whereby the engagement of the pawl portion 32A with the tooth portion 18A is not released.
The cam spring 44 is compressed when the cam member 43 cannot lift the parking pawl 32 upward and when the cam member 43 is pressed by the parking pawl 32.
Thus, the cam member 43 can reliably enter between the support member 36 and the parking pawl 32, and the pawl portion 32A can be moved to the parking gear 18 side while ensuring the swing of the parking pawl 32.
In the parking lock mechanism 31, when the shift lever is operated to the non-parking position by the driver, the manual shaft 37 rotates in the other direction, and the manual plate 40 swings in the other direction in accordance with the rotation of the manual shaft 37.
At this time, the parking lever 35 is moved to the far side from the parking pawl 32, and as shown in fig. 11, the cam member 43 is moved from the horizontal surface 36b to the inclined surface 36a of the support member 36.
At this time, the parking pawl 32 is biased by the return spring 34 and swings in the clockwise direction of fig. 2 about the parking pawl shaft 33.
Thereby, the claw portion 32A of the parking pawl 32 is separated from the tooth portion 18A of the parking gear 18, and the engagement of the claw portion 32A with the tooth portion 18A is released. As a result, the rotation of the parking gear 18 is not restricted, and the vehicle can travel.
In fig. 1 and 2, a stopper plate 38 is attached to an upper end 37a of the manual shaft 37. A portion of the stopper plate 38 is disposed in the recess 28 in the 2 nd space 25.
The stopper plate 38 swings with the rotation of the manual shaft 37. Fitting grooves 38A, 38B are formed in the outer peripheral portion of the stopper plate 38.
A stopper spring 39 is provided on the upper portion of the left vertical wall 5, and a roller member 39A is provided at the tip end portion of the stopper spring 39. The roller member 39A is freely fitted into the fitting groove 38A and the fitting groove 38B, and the stopper spring 39 has a pressing force for pressing the roller member 39A against the stopper plate 38.
By the driver's shift operation, the manual shaft 37 rotates and the detent plate 38 swings, and the claw portion 32A of the parking pawl 32 is positioned at the meshing position where it meshes with the tooth portion 18A of the parking gear 18 in a state where the roller member 39A has been fitted into the fitting groove 38A.
On the other hand, the manual shaft 37 is rotated by the driver's shift operation, and the stopper plate 38 is swung, and the claw portion 32A of the parking pawl 32 is positioned at the release position where it is disengaged from the tooth portion 18A of the parking gear 18 in a state where the roller member 39A is fitted into the fitting groove 38B.
The stopper plate 38 and the stopper spring 39 constitute a stopper mechanism, and when the driver performs a shift operation, the roller member 39A is moved between the fitting groove 38A and the fitting groove 38B, thereby giving a switching feeling (so-called click feeling) to the driver during the shift operation.
The stopper plate 38 moves the roller member 39A between the fitting groove 38A and the fitting groove 38B, thereby positioning the manual shaft 37 in the rotational direction.
In fig. 1 and 2, the stopper ribs 28A and 28B are provided on the inner wall surface of the upper portion of the left housing 2, and the stopper ribs 28A and 28B are located on the same plane as the stopper plate 38. In other words, the stopper ribs 28A and 28B are located at the same height as the stopper plate 38.
The stopper rib 28A is provided on one side of the stopper plate 38 in the swing direction, and the stopper rib 28B is provided on the other side of the stopper plate 38 in the swing direction.
The stopper ribs 28A and 28B are brought into contact with or out of contact with the stopper plate 38 in accordance with the rotation of the manual shaft 37, and serve as stoppers for restricting the rotation of the manual shaft 37 when they come into contact with the stopper plate 38.
In fig. 3, 4, the 1 st retainer 41 is provided on the front side of the parking pawl 32 in the depth direction of the left housing 2, and is provided across the 1 st space 24 and the 2 nd space 25 in the front-rear direction orthogonal to the depth direction.
The 2 nd retainer 42 is provided in the 2 nd space 25 (see fig. 9) and is provided on the rear side of the parking pawl 32 in the depth direction of the left housing 2. Thereby, the parking pawl 32 is sandwiched by the 1 st and 2 nd retainers 41 and 42 in the depth direction.
In fig. 1 and 2, the 1 st retainer 41 includes: a cylindrical portion 61; a 1 st coupling portion 62 extending rearward from the cylindrical portion 61; and a 2 nd coupling portion 63 extending forward from the cylindrical portion 61.
A fitting hole 61A is formed in the cylindrical portion 61, and a tip end of the parking lever 35 can enter the fitting hole 61A (see fig. 8). A boss portion 62A is formed at a rear end portion of the 1 st coupling portion 62, and a bolt 71A is inserted through the boss portion 62A. A boss portion 63A is formed at the tip end portion of the 2 nd coupling portion 63, and a bolt 71B is inserted through the boss portion 63A.
In fig. 10, a boss portion 52 is provided on the left vertical wall 5 of the left housing 2 located in the 1 st space 24, and a boss portion 53 is provided on the left vertical wall 5 of the left housing 2 located in the 2 nd space 25.
The boss portion 52 and the boss portion 53 are provided so as to be separated in the front-rear direction along the extending direction of the 1 st engaging portion 3A of the left case 2. The boss portion 52 is connected to a reinforcing rib 72 connecting the left vertical wall 5 and the bottom wall 10, and the boss portion 53 is connected to the bottom wall 10 of the left housing 2.
The boss portion 62A of the 1 st coupling portion 62 is fixed to the boss portion 52 by a bolt 71A, and the boss portion 63A of the 2 nd coupling portion 63 is fixed to the boss portion 53 by a bolt 71B. Thereby, the 1 st holder 41 is fixed to the left housing 2. The boss portions 52 and 53 of the present embodiment constitute the 1 st fixing portion of the present invention.
In fig. 4, a fitting portion 62B is formed in the 1 st coupling portion 62. The fitting portion 62B is provided at a position forward of the boss portion 62A, and the near side of the parking pawl shaft 33 is fitted to the fitting portion 62B.
The boss portion 51 protrudes laterally from the 2 nd retainer 42 from the left vertical wall 5 on the far side in the depth direction of the left housing 2, and supports the far side of the parking pawl shaft 33. Thereby, the parking pawl shaft 33 is supported by the boss portion 51 and the fitting portion 62B of the 1 st retainer 41.
In fig. 9, the 2 nd retainer 42 includes a cylindrical portion 64 (see fig. 4), a 1 st coupling portion 65 extending rearward from the cylindrical portion 64, and a 2 nd coupling portion 66 extending forward from the cylindrical portion 64.
In fig. 6 and 8, a guide hole 64A is formed in the cylindrical portion 64, and the parking rod 35 is inserted into the guide hole 64A. Thereby, the parking rod 35 is guided by the cylindrical portion 64 to move in the axial direction.
In fig. 8, a fitting portion 64B is formed in the cylindrical portion 64, and the support member 36 is fitted to the fitting portion 64B. The cylindrical portion 61 has a fitting portion 61B, and the support member 36 is fitted to the fitting portion 61B. Thereby, the support member 36 is supported by the 1 st holder 41 and the 2 nd holder 42 through the fitting portion 61B and the fitting portion 64B.
That is, the bearing member 36 is sandwiched by the cylindrical portion 61 and the cylindrical portion 64 in the depth direction of the left housing 2, and is supported by the 1 st holder 41 and the 2 nd holder 42.
In fig. 1, a boss portion 65A is formed at the rear end portion of the 1 st coupling portion 65, and a bolt 71C is inserted through the boss portion 65A.
Boss portions 66A, 66B are formed at the tip end portion of the 2 nd coupling portion 66 so as to be spaced apart in the vertical direction, and bolts 71D, 71E are inserted through the boss portions 66A, 66B.
In fig. 10, a boss portion 54 is provided at a lower portion of the bearing support portion 12, and the boss portion 54 is coupled to the bearing support portion 12.
Boss portions 55 and 56 are provided on the left vertical wall 5. The boss portions 55 and 56 are separated in the vertical direction along the extending direction of the 2 nd joining portion 3B of the left housing 2, and are connected to the front vertical wall 8 of the left housing 2.
The boss portion 65A of the 1 st coupling portion 65 is fixed to the boss portion 54 by bolts 71C, and the boss portions 66A, 66B of the 2 nd coupling portion 66 are fixed to the boss portions 55, 56 by bolts 71D, 71E.
Thereby, the 2 nd holder 42 is fixed to the left housing 2. The boss portions 55, 56 of the present embodiment constitute the 2 nd fixing portion of the present invention. The 1 st holder 41 of the present embodiment constitutes the coupling member and the 1 st coupling member of the present invention, and the 2 nd holder 42 constitutes the coupling member and the 2 nd coupling member of the present invention.
As described above, the parking lock mechanism 31 of the drive device 1 of the present embodiment includes: a 1 st space 24 whose depth from the 1 st engaging part 3A and the 2 nd engaging part 3B engaged with the engaging part 4A of the right housing 4 is small; and a 2 nd space 25 having a depth from the 1 st joint portion 3A and the 2 nd joint portion 3B larger than the 1 st space 24, wherein the parking lock mechanism 31 includes a left housing 2 that supports the intermediate shaft 16 and rotatably supports the intermediate shaft 16.
The 1 st cage 41 and the 2 nd cage 42 are housed in the left housing 2, and the 1 st cage 41 and the 2 nd cage 42 connect the parking pawl shaft 33 and the support member 36 that support the parking pawl 32 and freely swing the parking pawl 32 to the left housing 2.
The 1 st retainer 41 is provided across the 1 st space 24 and the 2 nd space 25, and is provided on the front side of the parking pawl 32 in the depth direction of the left housing 2, supporting the parking pawl shaft 33 and the bearing member 36.
The 2 nd retainer 42 is provided in the 2 nd space 24 and on the rear side of the parking pawl 32 in the depth direction of the left housing 2.
The left housing 2 has a boss portion 51, the boss portion 51 protrudes laterally of the 2 nd retainer 42 from the far left vertical wall 5 in the depth direction in the 1 st space 24, and supports the parking pawl shaft 33, and the parking pawl shaft 33 is supported by the boss portion 52 and the 1 st retainer 41.
Thus, the 1 st retainer 41 and the 2 nd retainer 42 can be formed into the optimum shapes according to the depth of the left housing 2, and the parking lock mechanism 31 can be efficiently provided in the 1 st space 24 and the 2 nd space 25 in the left housing 2 having a varying depth.
In addition, when the parking pawl shaft 33 is supported by both the 1 st retainer 41 and the 2 nd retainer 42, it is necessary to extend the 2 nd retainer 42 to the parking pawl shaft 33, and the 2 nd retainer 42 becomes a large-sized retainer.
In contrast, the parking lock mechanism 31 of the present embodiment supports the parking pawl shaft 33 by the boss portion 52 and the 1 st retainer 41 using the left vertical wall 5, thereby eliminating the need to extend the 2 nd retainer 42 to the parking pawl shaft 33.
Therefore, the 2 nd holder 42 can be downsized compared to the case where the parking pawl shaft 33 is supported by the 1 st and 2 nd holders. As a result, the parking lock mechanism 31 can be downsized.
In addition, according to the parking lock mechanism 31 of the driving device 1 of the present embodiment, the boss portion 51 has the small diameter portion 51A at the front end portion in the protruding direction, and the return spring 34 is provided on the outer periphery of the small diameter portion 51A.
The return spring 34 biases the parking pawl 32 so as to swing from an engagement position where the pawl portion 32A engages with the tooth portion 18A to a release position where the engagement of the pawl portion 32A with the tooth portion 18A is released.
Thus, the return spring 34 that biases the parking pawl 32 can be provided at a position corresponding to the 1 st retainer 41 in the axial direction of the boss portion 51, that is, in the depth direction of the left housing 2. Therefore, the return spring 34 can be efficiently provided in the 1 st space 24 having a small depth of the left housing 2.
Further, by providing the return spring 34 on the outer periphery of the small diameter portion 51A of the boss portion 51, the winding portion 34A of the return spring 34 can be wound compactly in the radial direction of the boss portion 51.
In other words, the diameter of the winding portion 34A in the radial direction of the boss portion 51 can be prevented from increasing, and the return spring 34 can be further efficiently provided in the 1 st space 24 having a small depth.
In addition, according to the parking lock mechanism 31 of the drive device 1 of the present embodiment, the left housing 2 has the 1 st engaging portion 3A extending in the front-rear direction and the 2 nd engaging portion 3B extending in the up-down direction.
The 1 st retainer 41 is fixed to boss portions 52, 53 provided on the left housing 2 along the 1 st joint portion 3A, and the 2 nd retainer 42 is fixed to boss portions 55, 56 provided on the left housing 2 along the 2 nd joint portion 3B.
Thus, the boss portions 52, 53 and the boss portions 55, 56 can be provided in different directions, i.e., orthogonal directions. Therefore, when the reaction force is applied to the 1 st and 2 nd retainers 41 and 42 by the parking pawl 32 through the cam member 43 at the time of swinging the parking pawl 32 to the engaged position, the 1 st and 2 nd retainers 41 and 42 can be prevented from tilting.
That is, the reaction forces acting on the 1 st holder 41 and the 2 nd holder 42 can be dispersed not in one direction but in different directions.
Thus, the 1 st retainer 41 and the 2 nd retainer 42 can be prevented from tilting, and therefore the operation of the parking lock mechanism 31 can be stabilized.
Although embodiments of the present invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the claims.

Claims (3)

1. A parking lock mechanism of a drive device includes:
a housing having: an engaging portion that engages with the housing member; a vertical wall that supports a rotating shaft and that is rotatably provided on the rotating shaft, and is located on a far side in a depth direction, which is the same direction as an extending direction of the rotating shaft, with respect to the joint; a recess that bulges distally beyond the longitudinal wall; a 1 st space having a small depth from the joint portion to the vertical wall; and a 2 nd space which is deeper than the 1 st space from the joint portion to the recess portion;
a parking gear having a tooth portion, fitted to the rotary shaft and rotating together with the rotary shaft;
a support shaft accommodated in the 1 st space and assembled to the housing;
a parking pawl provided so as to straddle the 1 st space and the 2 nd space, having a pawl portion engaged with the tooth portion, supported by the support shaft, and swingably movable;
a parking lever having a cam member and provided to be movable in the 2 nd space in the axial direction;
a support member accommodated in the 2 nd space, the cam member being moved to the support member in accordance with movement of the parking lever, and the parking pawl being swung so that the pawl portion engages with the tooth portion; and
a coupling member that couples the support shaft and the support member to the housing, the parking lock mechanism of the drive device being characterized in that,
the connecting member includes: a 1 st coupling member that is provided across the 1 st space and the 2 nd space, is provided on a front side of the parking pawl in a depth direction of the housing, and supports the support shaft and the support member; and a 2 nd coupling member provided in the 2 nd space and behind the parking pawl in a depth direction of the housing,
the housing has a support shaft boss portion that protrudes from the vertical wall to a side of the 2 nd coupling member in the 1 st space and supports the support shaft,
the support shaft is supported by the support shaft boss portion and the 1 st coupling member.
2. The parking lock mechanism of the drive device according to claim 1,
the support shaft boss portion has a small diameter portion at a distal end portion in a projecting direction,
an urging member is provided on the outer periphery of the small diameter portion,
the biasing member biases the parking pawl to swing from an engagement position where the pawl portion is engaged with the tooth portion to a release position where the engagement of the pawl portion with the tooth portion is released.
3. The parking lock mechanism of the drive device according to claim 1 or claim 2,
the joint portion includes: a 1 st engaging portion extending in a 1 st direction; and a 2 nd engaging portion extending in a 2 nd direction different from the 1 st direction,
the 1 st coupling member is fixed to a plurality of 1 st fixing portions provided along the 1 st joint portion in the housing,
the 2 nd coupling member is fixed to a plurality of 2 nd fixing portions provided along the 2 nd joint portion in the housing.
CN201910058553.5A 2018-01-25 2019-01-22 Parking lock mechanism of drive device Active CN110081166B (en)

Applications Claiming Priority (2)

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JP2018-010447 2018-01-25
JP2018010447A JP6958386B2 (en) 2018-01-25 2018-01-25 Drive device parking lock mechanism

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CN110081166B true CN110081166B (en) 2020-12-04

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CN (1) CN110081166B (en)
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US5295412A (en) * 1993-07-09 1994-03-22 Chrysler Corporation Park locking mechanism
JP3306217B2 (en) * 1994-04-04 2002-07-24 愛知機械工業株式会社 Parking mechanism for continuously variable transmission
JP2000104827A (en) * 1998-09-30 2000-04-11 Fuji Heavy Ind Ltd Parking device for continuously variable transmission
DE19910576B4 (en) * 1999-03-10 2009-08-20 Volkswagen Ag Parking lock for a manual transmission
JP2001253324A (en) * 2000-03-09 2001-09-18 Suzuki Motor Corp Parking device for transmission
JP2006103398A (en) 2004-10-01 2006-04-20 Jatco Ltd Parking mechanism
CN101628544B (en) * 2008-07-18 2012-09-12 比亚迪股份有限公司 Vehicle-driving device and vehicle comprising same
JP4861455B2 (en) * 2009-07-15 2012-01-25 ジヤトコ株式会社 Automatic transmission
JP2011099525A (en) * 2009-11-06 2011-05-19 Toyota Motor Corp Parking device for transmission
JP2012052646A (en) * 2010-09-03 2012-03-15 Gkn Driveline Japan Ltd Shift mechanism
CN203395165U (en) * 2013-07-01 2014-01-15 中国第一汽车股份有限公司 Automatic dual-clutch transmission (DCT) parking axle limiting device
JP6380047B2 (en) * 2014-11-27 2018-08-29 スズキ株式会社 Vehicle transmission
JP2017072228A (en) * 2015-10-09 2017-04-13 スズキ株式会社 Vehicular transmission

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FR3077111B1 (en) 2022-06-24
DE102019200382B4 (en) 2024-05-02
DE102019200382A1 (en) 2019-07-25
FR3077111A1 (en) 2019-07-26
JP2019127177A (en) 2019-08-01
JP6958386B2 (en) 2021-11-02
CN110081166A (en) 2019-08-02

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