DAMPER DISC ASSEMBLY

• US 20180259001A1
• Filed: 02/05/2016
• Published: 09/13/2018
• Est. Priority Date: 02/09/2015
• Status: Active Grant

• Current Assignee: Exedy Corporation
• Original Assignee: Exedy Corporation
• Inventors: WAKABAYASHI, Hirokazu, KUBOTA, Yoshitaka, HASHIMOTO, Kazuki
• Granted Patent: US 10,443,659 B2
• Time in Patent Office: Days
• CPC Class Codes: F16D 13/64 Clutch-plates; Clutch-lamellae brake-plates, brake-lamellae F16D65/12
• CPC Class Codes: F16D 13/68 Attachments of plates or lamellae to their supports one or more discs connected to the linings transmitting torque to one or more discs connected to the hub by helical springs in windows in the discs, i.e. rotary vibration dampers F16F15/12
• CPC Class Codes: F16D 2300/22 Vibration damping
• CPC Class Codes: F16D 3/12 specially adapted for accumulation of energy to absorb shocks or vibration by making use of fluid elements F16D3/80
• CPC Class Codes: F16D 3/66 the elements being metallic, e.g. in the form of coils
• CPC Class Codes: F16F 15/1238 with pre-damper, i.e. additional set of springs between flange of main damper and hub
• CPC Class Codes: F16F 15/134 Wound springs F16F15/1333, F16F15/1337, F16F15/137 take precedence
• CPC Class Codes: F16F 15/139 characterised by friction-damping means F16F15/13128 takes precedence
• CPC Class Codes: F16F 2232/02 Rotary

Abstract

A clutch disc assembly includes a hub flange, an output hub, an intermediate hub, a plurality of first elastic members, and a plurality of second elastic members. Power from an engine is input into the hub flange. The output hub can be coupled to an input shaft of the transmission. The intermediate hub is arranged between the hub flange and the output hub in a diameter direction such that relative rotation with the hub flange by an angle greater than or equal to a first angular range is prevented, and such that relative rotation with the output hub by an angle greater than or equal to a second angular range is prevented. The plurality of first elastic members couple the hub flange and the intermediate hub elastically in a rotation direction. The plurality of second elastic members couple the intermediate hub and the output hub elastically in the rotation direction.

Claims

1. A damper disc assembly for transmitting power from an engine to an input shaft of a transmission, the damper disc assembly comprising:

a hub flange to which power from the engine is input;

an output hub that can be coupled to the input shaft of the transmission;

an intermediate hub that is arranged between the hub flange and the output hub in a diameter direction such that relative rotation with the hub flange by an angle greater than or equal to a first angular range is prevented, and such that relative rotation with the output hub by an angle greater than or equal to a second angular range is prevented;

a plurality of first elastic members that couple the hub flange and the intermediate hub elastically in a rotation direction; and

a plurality of second elastic members that couple the intermediate hub and the output hub elastically in the rotation direction.

2. The damper disc assembly according to claim 1, further comprising:

a pair of retaining plates that are arranged on respective sides in an axial direction of the hub flange and the intermediate hub, and are coupled to the intermediate hub so as to not be capable of relative rotation,

wherein the plurality of first elastic members elastically couple the hub flange to the pair of retaining plates.

3. The damper disc assembly according to claim 1, wherein the hub flange and the intermediate hub are prevented from rotating relative to each other by an angle greater than or equal to the first angular range due to a portion of an inner circumferential portion of the hub flange abutting against a portion of an outer circumferential portion of the intermediate hub, and

the intermediate hub and the output hub are prevented from rotating relative to each other by an angle greater than or equal to the second angular range due to a portion of an inner circumferential portion of the intermediate hub abutting against a portion of an outer circumferential portion of the output hub.

4. The damper disc assembly according to claim 3, wherein

the hub flange is a ring-shaped plate member and has a plurality of notches formed in an inner circumferential edge with predetermined intervals therebetween in a circumferential direction,

the input shaft of the transmission can be coupled to an inner circumferential portion of the output hub, and a plurality of teeth are provided on an outer circumferential portion of the output hub, and

the intermediate hub is a ring-shaped plate member, an outer circumferential portion of the intermediate hub having a plurality of teeth that are respectively inserted into the notches of the hub flange such that the intermediate hub can rotate relative to the hub flange in the first angular range, and an inner circumferential portion of the intermediate hub having a plurality of notches into which the teeth of the output hub are respectively inserted such that the intermediate hub can rotate relative to the output hub in the second angular range.

5. The damper disc assembly according to claim 2, further comprising:

a hysteresis torque generating mechanism that is for generating hysteresis torque and is provided between the hub flange and at least one of the two retaining plates in an axial direction.