Damper pulley for crankshaft

Patent metadata

Field	Value
Publication number	US-11015696-B2
Application number	US-201815996919-A
Country	US
Kind code	B2
Filing date	Jun 4, 2018
Priority date	Mar 8, 2018
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A damper pulley for a crankshaft may include: a hub including a first cylindrical portion, a first closed end provided at one end of the first cylindrical portion, and a first open end provided at the other end of the first cylindrical portion; and a pulley including a second cylindrical portion having a plurality of grooves, a second closed end provided at one end of the second cylindrical portion, and a second open end provided at the other end of the second cylindrical portion. In particular, the first closed end of the hub and the second closed end of the pulley are combined into one unit.

First claim

What is claimed is:

1. A damper pulley for a crankshaft, the damper pulley comprising:
a hub including a first cylindrical portion, a first closed end provided at a first end of the first cylindrical portion, and a first open end provided at a second end of the first cylindrical portion;
a pulley including a second cylindrical portion having a plurality of grooves, a second closed end provided at a first end of the second cylindrical portion, and a second open end provided at a second end of the second cylindrical portion; and
an offset portion protruding from the second closed end of the pulley toward an outside of the pulley to form a recess,
wherein the first closed end of the hub is fit in the recess of the offset portion of the pulley, and the first closed end of the hub and the second closed end of the pulley are fixedly combined to each other and rotate together.

2. The damper pulley according to claim 1 , wherein the first cylindrical portion of the hub is arranged to be concentric with the second cylindrical portion of the pulley.

3. The damper pulley according to claim 1 , wherein a plurality of holes are provided in the first closed end of the hub and the second closed end of the pulley.

4. The damper pulley according to claim 1 , wherein a first annular mass is mounted on an outer surface of the first cylindrical portion of the hub through a first rubber.

5. The damper pulley according to claim 4 , wherein a second annular mass is mounted on an inner surface of the second cylindrical portion of the pulley through a second rubber.

6. The damper pulley according to claim 5 , wherein the first annular mass and the second annular mass are arranged in a radial direction of the hub.

7. The damper pulley according to claim 6 , wherein the first annular mass has a mass body extending along an axis of the hub, and a disc portion extended from an edge of the mass body in an outer diameter direction thereof.

8. The damper pulley according to claim 7 , wherein the mass body of the first annular mass and an inner surface of the second annular mass are spaced apart from each other by a first gap in the radial direction of the hub, and
the disc portion of the first annular mass and a lateral end portion of the second annular mass are spaced apart from each other by a second gap in a longitudinal direction of the hub.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Seong Yong
• Kim Sung Kwang
• Roh Tae Hoon

Classifications

• F16H57/0006

  Vibration-damping or noise reducing means specially adapted for gearings (devices for varying tension of belts, ropes or chains with damping means F16H7/0829; toothed members with construction providing vibration damping F16H55/14; reducing vibrations or noise of the gearbox casing F16H57/028; suppression of vibrations or noise of gear selectors F16H59/0208; control of hydrostatic fluid gearing preventing or reducing vibrations or noise F16H61/4183) · CPC title

• F16H55/36 Primary

  Pulleys (with features essential for adjustment F16H55/52) · CPC title

• F16H55/14 Primary

  Construction providing resilience or vibration-damping (F16H55/06 takes precedence) · CPC title

• F16F15/24

  of crankshaft systems by particular disposition of cranks, pistons, or the like {(shape of crankshafts or eccentric-shafts having regard to balancing F16C3/20)} · CPC title

• F16F15/126

  consisting of at least one annular element surrounding the axis of rotation · CPC title