Torque limiter device

Patent metadata

Field	Value
Publication number	US-11796010-B2
Application number	US-202016748714-A
Country	US
Kind code	B2
Filing date	Jan 21, 2020
Priority date	Mar 15, 2019
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A torque limiter device for limiting a torque transmitted between a power source-side member and an output-side member is disclosed. The torque limiter device includes a cover, a friction disc and an urging member. The cover includes a coupling portion, a tubular portion and a support portion. The coupling portion is coupled to the power source-side member. The tubular portion axially extends from the coupling portion. The support portion extends from the tubular portion to an inner peripheral side. The friction disc is accommodated in an inner peripheral space of the tubular portion of the cover, and is pressed toward the power source-side member. The urging member is supported by the support portion of the cover, and urges the friction disc toward the power source-side member.

First claim

What is claimed is:

1. A torque limiter device for limiting a torque transmitted between a power source-side member and an output-side member, the torque limiter device comprising:
a cover including a coupling portion, a tubular portion and an annular support portion, the coupling portion coupled to the power source-side member, the tubular portion axially extending from the coupling portion, the support portion extending from the tubular portion to a radially innermost edge of the support portion;
a friction disc accommodated in an inner peripheral space of the tubular portion of the cover, the friction disc configured to be pressed toward the power source-side member;
an urging member supported by the support portion of the cover, the urging member configured to urge the friction disc toward the power source-side member; and
a pressure plate having an annular shape, the pressure plate disposed axially between the friction disc and the urging member;
wherein the support portion is elastically deformable and includes a protruding portion axially protruding from the support portion toward the power source-side member to contact the urging member, the urging member arranged relative to the support portion such that the radially innermost edge of the support portion is disposed radially outward of a radially inner edge of the urging member; and
wherein the urging member is a cone spring, the cone spring disposed between the pressure plate and the support portion of the cover while compressed therebetween.

2. The torque limiter device according to claim 1 , wherein the coupling portion, the tubular portion and the support portion of the cover are integrally processed by stamping.

3. The torque limiter device according to claim 1 , wherein
the protruding portion has an annular shape, and
the cone spring is supported at an outer peripheral end thereof by the protruding portion.

4. The torque limiter device according to claim 1 , further comprising:
a damper plate having an annular shape, the damper plate disposed between the friction disc and the power source-side member.

5. The torque limiter device according to claim 4 , wherein the damper plate contacts the power source-side member.

6. The torque limiter device according to claim 1 , wherein
the support portion has a radially intermediate part located between a radially outer end and the radially innermost edge of the support portion, and
the protruding portion axially protrudes from the radially intermediate portion of the support portion.

Assignees

• Exedy Corp

Inventors

• Tomita Yusuke
• Okamachi Yusuke

Classifications

• F16D7/025 Primary

  with flat clutching surfaces, e.g. discs · CPC title

• F16F15/1219

  by means of spring-loaded axially arranged locking means · CPC title

• F16F15/1297

  Overload protection, i.e. means for limiting torque · CPC title

• F16F15/1292 Primary

  characterised by arrangements for axially clamping or positioning or otherwise influencing the frictional plates · CPC title

• F16D43/215

  with flat friction surfaces, e.g. discs · CPC title