# US 11,078,044 B2 · Ring assembly for elevator governor, governor and elevator system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,044 B2 - Document ID: US11078044B2 - Status: Granted - Kind: B2 - Application number: 15/868,617 - Filed: 2018-01-11 - Published: 2018-07-19 - Granted: 2021-08-03 - Earliest claimed: 2017-01-13 - Assignees: Otis Elevator Company - Applicants: Otis Elevator Company - Inventors: Zhengbao Shi - Web page: https://patentgrep.com/patent/US11078044B2 ## CPC - B66B 5/044: {Mechanical overspeed governors} - F16D 7/00: Slip couplings, e.g. slipping on overload, for absorbing shock (combined with yielding shaft couplings F16D3/14; fluid slip couplings F16D31/00 - F16D35/00) - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) - F16D: COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES ## Abstract The present invention provides a core ring assembly for an elevator governor, a governor and an elevator system, wherein the core ring assembly comprises: a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween; and a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring, wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates with the first portion of the core ring by virtue of friction of the contact surfaces and enables a safety activating module. The core ring assembly provided by the embodiment of the present invention has a peak torque limiting function and a compact structure. ## Claims ### Claim 1 A core ring assembly for an elevator governor, wherein the core ring assembly comprises: a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween; and a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring, wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates by virtue of friction of the contact surfaces and enables a safety activating module; wherein the contact surfaces between the first portion and the second portion of the core ring are conical surfaces; wherein there is a gap, at outer rings of the contact surfaces which are conical surfaces, between the first portion and the second portion of the core ring. ### Claim 2 (depends on 1) The core ring assembly according to claim 1, wherein the first portion and the second portion of the core ring rotate around the same axis. ### Claim 3 (depends on 1) The core ring assembly according to claim 1, wherein the first portion of the core ring has an opening for sleeving a fixed shaft and is capable of rotating around the fixed shaft. ### Claim 4 (depends on 3) The core ring assembly according to claim 3, wherein the first portion of the core ring has a body, and a front side of the body of the first portion of the core ring defines a surface for frictional contact with the second portion of the core ring. ### Claim 5 (depends on 4) The core ring assembly according to claim 4, wherein the front side of the body of the first portion of the core ring is formed as a convex conical surface. ### Claim 6 (depends on 4) The core ring assembly according to claim 4, wherein a rear side of the body of the first portion of the core ring is in a shape matching a guide wheel. ### Claim 7 (depends on 1) A governor, wherein the governor comprises the core ring assembly according to claim 1. ### Claim 8 (depends on 7) The governor according to claim 7, wherein the governor is a car-mounted governor. ### Claim 9 A core ring assembly for an elevator governor, wherein the core ring assembly comprises: a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween; and a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring, wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates by virtue of friction of the contact surfaces and enables a safety activating module; wherein the first portion of the core ring has an opening for sleeving a fixed shaft and is capable of rotating around the fixed shaft; wherein the first portion of the core ring has a body, and a front side of the body of the first portion of the core ring defines a surface for frictional contact with the second portion of the core ring; wherein the front side of the body of the first portion of the core ring is formed as a convex conical surface; wherein a cylindrical contraction part extends from an inner ring on the front side of the body of the first portion of the core ring, and the second portion of the core ring is sleeved on the cylindrical contraction part of the first portion of the core ring. ### Claim 10 (depends on 9) The core ring assembly according to claim 9, wherein a bearing is provided between the second portion of the core ring and the cylindrical contraction part of the first portion of the core ring. ### Claim 11 (depends on 9) The core ring assembly according to claim 9, wherein the second portion of the core ring has a body, and a rear side of the body of the second portion of the core ring defines a concave conical surface matching the convex conical surface of the first portion of the core ring. ### Claim 12 (depends on 9) The core ring assembly according to claim 9, wherein the second portion of the core ring has a cylindrical extension part, and the cylindrical extension part is provided thereon with a connecting part connected with the safety activating module. ### Claim 13 (depends on 12) The core ring assembly according to claim 12, wherein the pressure generation mechanism is disposed between the cylindrical contraction part of the first portion of the core ring and the cylindrical extension part of the second portion of the core ring. ### Claim 14 (depends on 13) The core ring assembly according to claim 13, wherein the pressure generation mechanism comprises an elastic device with one end acting on an inner side of the second portion of the core ring and the other end acting on a stopper on the cylindrical contraction part of the first portion of the core ring. ### Claim 15 (depends on 14) The core ring assembly according to claim 14, wherein a thrust bearing is provided between the elastic device and the stopper on the cylindrical contraction part of the first portion of the core ring. ### Claim 16 (depends on 14) The core ring assembly according to claim 14, wherein the elastic device is one or multiple disc springs. ### Claim 17 (depends on 14) The core ring assembly according to claim 14, wherein a thread is provided on the cylindrical contraction part, and the stopper is a nut screwed onto the cylindrical contraction part. ### Claim 18 A governor, wherein the governor comprises a core ring assembly, including: a first portion and a second portion of a core ring which are axially arranged, the first portion and the second portion of the core ring having contact surfaces therebetween; and a pressure generation mechanism for generating a pressure between the first portion and the second portion of the core ring, wherein the first portion of the core ring rotates by receiving an actuation torque from an over-speed actuating mechanism, and the second portion of the core ring rotates by virtue of friction of the contact surfaces and enables a safety activating module; wherein the second portion of the core ring is connected with an elevator safety gear pull rod. ### Claim 19 (depends on 18) An elevator system, wherein the elevator system comprises the governor according to claim 18.