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Force balanced bellcrank actuator for multi-mode clutch module

A technology for actuators and clutches, applied to clutches, one-way clutches, electric clutches, etc., can solve problems such as accidental disengagement and impact

Inactive Publication Date: 2017-12-05
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A particular issue concerns the effect of G-forces on the actuator assembly and its associated components
In some cases, for example, such a structure may accidentally disengage during driving over a bumpy road

Method used

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  • Force balanced bellcrank actuator for multi-mode clutch module
  • Force balanced bellcrank actuator for multi-mode clutch module
  • Force balanced bellcrank actuator for multi-mode clutch module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] refer to figure 1 , a multi-mode clutch module 8 (also referred to as a multi-mode clutch module or MMCM) having an axis "A-A" may be used in an automatic transmission (not shown). For example, such a transmission could be employed in a front-wheel drive vehicle, and the clutch module 8 could utilize the crank actuator assembly 10, as described herein. As understood by those skilled in the art, the clutch module 8 may include a housing or housing 12 that may serve as a driven outer race.

[0029] The splined inner hub 14 may be adapted to transmit power from an engine (not shown) to a vehicle driveline (not shown). Now refer to figure 2 , the hub 14 may be integral with drive components such as the inner race 16, and the inner race 16 and the outer race 12 may be selectively coupled together by the circumferential arrangement of pawls 18A and 18B.

[0030] Controlled movement of the pawls 18 may be achieved via an actuator cam ring 20 having radially disposed cam su...

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Abstract

An actuator (10) for a multi-mode clutch module (8) interacts with a bellcrank (40) to selectively block interactions of pawls (18) between inner (16) and outer (12) races of the module. The bellcrank (40) pivots about a pin (42) fixed to the outer race (12), converting linear motion of a plunger (30) extending from the actuator (10) into clockwise and counterclockwise motions of a cam ring (20) between two angular limits by a torque arm (52) fixed to the cam ring (20). The one-piece bellcrank (40) includes three levers; one (44) interacting with the plunger (30), a second (46) containing a slot (50) to engage the torque arm (52) to control pawl movement, and a third (54) having a mass greater than the first (44) and second (46) levers for providing inertial resistance to any uncommanded rotation of the bellcrank (40) under externally induced G-forces. As such, the inner (16) and outer (12) races may be more reliably locked together in at least one clutch operating mode and can freewheel in the same clutch operating mode.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is a non-provisional patent application claiming priority under 35 USC §119(e) to US Provisional Patent Application Serial No. 62 / 147,694, filed on April 15, 2015. technical field [0003] The present disclosure relates generally to overrunning clutches for automotive transmissions, and more particularly to multi-mode clutch actuators employed in the operation of such transmissions. Background technique [0004] Motor vehicles typically include an internal combustion engine that houses a rotating crankshaft configured to transmit motive power from the engine through a driveshaft to rotate the wheels. A transmission is interposed between the engine and the driveshaft components to selectively control torque and speed ratios between the crankshaft and the driveshaft. In a manually-operated transmission, a corresponding manually-operated clutch may be interposed between the engine and the transmission to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D41/14F16D41/16F16D43/16F16D23/12
CPCF16D41/14F16D28/00F16D41/16F16D23/12F16D43/16
Inventor C·坎普顿J·F·古兹德卡J·卡德莱茨
Owner BORGWARNER INC
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