US 2015/0308511 A1Published application

Torque limiter, variable transmission ratio device, and tolerance ring

AssigneesJtekt Corporation, Togo Seisakusyo Corporation, Toyota Jidosha Kabushiki Kaisha

InventorsToshihiro ASAKURA, Masatoshi FUJIMOTO, Toshiaki OGATA, Yukihiko KANAYAMA, Hirotsune SUZUKI, Yuji NAKAMURA, Yuzo HIRAKAWA, Kenji HAYASHI, Hiroyuki TOYODA

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Abstract

This torque limiter is configured from a ring body and a spring-form part provided in the ring body. The ring body comprises a band-form metal plate and is bent approximately into a C-shape along the circumferential direction of a motor shaft and a lock holder. The spring-form part is formed so as to be capable of radial elastic deformation. The spring-form part is configured from main protrusions arranged in a compressed state between the motor shaft and the lock holder, and from sub-protrusions arranged in a non-compressed state. Further, grease is stored in a part or all of the concavities formed by the main protrusions and the sub-protrusions.

Claims5

Dependent claims

A torque limiter including a shaft-shaped first rotating member, a second rotating member fitted on the outer periphery of the first rotating member, and a tolerance ring interposed between the first rotating member and the second rotating member, where relative rotation of the first rotating member and the second rotating member is restricted or allowed based on frictional resistance of the tolerance ring, wherein

the tolerance ring includes a ring main body extending in the circumferential direction of each rotating member and on the ring main body,
spring-like portions elastically deformable in the radial direction are formed, and
according to the elastic forces of the spring-like portions, frictional resistance is caused between the ring main body and the first rotating member or second rotating member, and
the spring-like portions consist of a plurality of main protrusions disposed in a compressed state between the first rotating member and the second rotating member and a plurality of sub-protrusions the protruding amount of which is smaller than that of the main protrusions.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/792,988Filed 7 Jul 2015
Priority: JP 2011-0480004 Mar 2011
Published: 29 Oct 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

F16D 7/021
Of the friction type: with radially applied torque-limiting friction surfaces
B62D 5/008
Power-assisted or power-driven steering: changing the transfer ratio between the steering wheel and the steering gear by variable supply of…
F16D 1/0835
With radial loading of both hub and shaft by an intermediate ring or sleeve: due to the elasticity of the ring or sleeve
F16D
Couplings for transmitting rotation

Family

Application13/985,653Division · filed 15 Aug 2013
Application14/792,988Division
US 2013/0324345 A1Published application
US 9,109,632 B2Related patent
US 9,920,794 B2Related patent
US 2015/0308511 A1This patent

From the US filing history. Foreign family members aren’t listed.

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