IP Library Granted Patent US 11,273,802
Granted Patent B2
US 11,273,802 · App. 16/518,101 · Granted Mar 15, 2022

Arrangement of a parking lock in a vehicular transmission

Inventors: Gert Hanker (Meckenbeuren, DE); Christian Michel (Ravensburg, DE)
Assignee: ZF FRIEDRICHSHAFEN AG
B60T7/045B60T8/3215F16H63/3433F16H63/3441
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Quick Facts
Patent No.
US 11,273,802
App. No.
16/518,101
Granted
Mar 15, 2022
Kind
B2
Abstract

A parking lock in a vehicle transmission includes a locking mechanism for locking and releasing a parking interlock gear ( 1 ) and an actuating unit. The actuating unit is coupled via a coupling mechanism to the locking mechanism in order to actuate the locking mechanism between an interlock position and a release position of the parking interlock gear ( 1 ). The parking lock is arranged on an intermediate plate ( 2 ) in a housing of the vehicle transmission.

Claims (32)

1. An arrangement of a parking lock in a vehicle transmission, wherein the parking lock comprises:

a locking mechanism for locking and releasing a parking interlock gear ( 1 ); and

an actuating unit coupled to the locking mechanism via a coupling mechanism in order to actuate the locking mechanism between an interlock position and a release position of the parking interlock gear ( 1 ),

wherein the parking lock is arranged on an intermediate plate ( 2 ) in a housing of the vehicle transmission,

wherein a parking lock cylinder ( 3 ) of the actuating unit is arranged in a recess ( 4 ) of the intermediate plate ( 2 ),

wherein a connecting rod ( 5 ) of the locking mechanism extends through a passage opening ( 6 ) of the intermediate plate ( 2 ),

wherein the connecting rod ( 5 ) engages into a housing-affixed guide sleeve ( 8 ) with an interlocking element ( 7 ) in order to actuate a locking pawl ( 9 ) of the parking interlock gear ( 1 ),

wherein the interlocking element ( 7 ) is axially movably mounted on the connecting rod ( 5 ), and

wherein a longitudinal axis ( 10 ) of the parking lock cylinder ( 3 ) and a longitudinal axis ( 11 ) of the connecting rod ( 5 ) of the locking mechanism extend approximately axially parallel to each other and are aligned approximately perpendicularly to the intermediate plate ( 2 ).

2. An arrangement of a parking lock in a vehicle transmission, wherein the parking lock comprises:

a locking mechanism for locking and releasing a parking interlock gear ( 1 ); and

an actuating unit coupled to the locking mechanism via a coupling mechanism in order to actuate the locking mechanism between an interlock position and a release position of the parking interlock gear ( 1 ),

wherein the parking lock is arranged on an intermediate plate ( 2 ) in a housing of the vehicle transmission,

wherein a parking lock cylinder ( 3 ) of the actuating unit is arranged in a recess ( 4 ) of the intermediate plate ( 2 ),

wherein a connecting rod ( 5 ) of the locking mechanism extends through a passage opening ( 6 ) of the intermediate plate ( 2 ),

wherein the connecting rod ( 5 ) engages into a housing-affixed guide sleeve ( 8 ) with an interlocking element ( 7 ) in order to actuate a locking pawl ( 9 ) of the parking interlock gear ( 1 ),

wherein the interlocking element ( 7 ) is axially movably mounted on the connecting rod ( 5 ), and

wherein a longitudinal axis ( 10 ) of the parking lock cylinder ( 3 ) and a longitudinal axis ( 11 ) of the connecting rod ( 5 ) extend approximately axially parallel to a swivel axis ( 12 ) of the locking pawl ( 9 ) of the parking interlock gear ( 1 ).

3. An arrangement of a parking lock in a vehicle transmission, wherein the parking lock comprises:

a locking mechanism for locking and releasing a parking interlock gear ( 1 ); and

an actuating unit coupled to the locking mechanism via a coupling mechanism in order to actuate the locking mechanism between an interlock position and a release position of the parking interlock gear ( 1 ),

wherein the parking lock is arranged on an intermediate plate ( 2 ) in a housing of the vehicle transmission,

wherein a parking lock cylinder ( 3 ) of the actuating unit is arranged in a recess ( 4 ) of the intermediate plate ( 2 ),

wherein a connecting rod ( 5 ) of the locking mechanism extends through a passage opening ( 6 ) of the intermediate plate ( 2 ),

wherein the connecting rod ( 5 ) engages into a housing-affixed guide sleeve ( 8 ) with an interlocking element ( 7 ) in order to actuate a locking pawl ( 9 ) of the parking interlock gear ( 1 ),

wherein the interlocking element ( 7 ) is axially movably mounted on the connecting rod ( 5 ),

wherein an end of an actuating piston ( 13 ) of the parking lock cylinder ( 3 ) is coupled to a first end of a two-sided lever ( 14 ) of the coupling mechanism arranged on a selector shaft ( 36 ) of the coupling mechanism, and

wherein an end of the connecting rod ( 5 ) is coupled to a second end of the two-sided lever ( 14 ) of the coupling mechanism.

4. The arrangement of claim 3 , wherein the selector shaft ( 36 ) is aligned approximately parallel to the intermediate plate ( 2 ) and is mounted to the intermediate plate ( 2 ) with holding straps ( 38 ).

5. The arrangement of claim 3 , wherein the parking lock cylinder ( 3 ) is connected to an oil duct ( 18 ) in the intermediate plate ( 2 ) for actuating the actuating piston ( 13 ), and the oil duct ( 18 ) opens into the parking lock cylinder ( 3 ) via an oil delivery port ( 17 ).

6. The arrangement of claim 3 , wherein a parking lock detent unit is provided with an intermediate plate-side latch ( 20 ) on the intermediate plate ( 2 ).

7. The arrangement of claim 6 , wherein the parking lock detent unit comprises a one-sided lever ( 19 ) connected to the selector shaft ( 36 ) in a rotationally fixed manner, and the end of the one-sided lever ( 19 ) is fixable in the intermediate plate-side latch ( 20 ) in order to fix a predetermined parking lock position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 22, 2019
From: HANKER, GERT; MICHEL, CHRISTIAN
To: ZF FRIEDRICHSHAFEN AG
Reel/Frame 049819/0913 →
Priority Claims (1)
DE 10 2018 212 189.3 · Jul 23, 2018 · national
Continuity (1)
Related Publication 20200023818A1 · Jan 23, 2020
Cited By (4)
US 12,247,658 US 12,253,169 US 12,325,307 US 12,655,905