# US 10,369,416 B2 · Resistance device and exercise equipment having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,416 B2 - Document ID: US10369416B2 - Status: Granted - Kind: B2 - Application number: 15/815,109 - Filed: 2017-11-16 - Published: 2018-12-27 - Granted: 2019-08-06 - Earliest claimed: 2017-06-27 - Assignees: Fitek Fitness Products Inc. - Applicants: Fitek Fitness Products Inc. - Inventors: Wan-Fu Huang - Web page: https://patentgrep.com/patent/US10369416B2 ## CPC - A63B 24/0087: {Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load} - A63B 21/0051: {using eddy currents induced in moved elements, e.g. by permanent magnets} - A63B 21/015: including rotating or oscillating elements {rubbing against fixed elements} - A63B 22/0605: {performing a circular movement, e.g. ergometers} - A63B 22/0056: {the pivoting movement being in a vertical plane, e.g. steppers with a horizontal axis (platforms for rocking motion about a horizontal axis A63B22/16)} - A63B 22/0076: {Rowing machines for conditioning the cardio-vascular system (seats moving during exercise A63B22/0087; training appliances for rowing or sculling on boats A63B69/06)} - A63B 2024/0093: {the load of the exercise apparatus being controlled by performance parameters, e.g. distance or speed} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract An exercise equipment includes a torque generating mechanism, and a resistance adjusting mechanism including a resistance applying unit that includes a fixed seat, a contact member pivotally connected to the fixed seat, a first link pivotally connected to the fixed seat, and a second link pivotally connected between the first link and contact member, a resistance sensing unit that includes a magnetic member mounted to the second link and movable relative to the first link, and a Hall sensing module mounted to the first link, and disposed for outputting a sensing signal generated by magnetic field variation induced by a relative movement between the Hall sensing module and the magnetic member. ## Claims ### Claim 1 An exercise equipment comprising: a torque generating mechanism including a supporting frame, and a torque generating unit that is mounted to said supporting frame, and that is rotatable on said supporting frame for generating a torque; and a resistance adjusting mechanism including a resistance device and an adjuster, said resistance device including a resistance applying unit that is mounted to said supporting frame and that is operable to press against said torque generating unit so as to apply a resistance to rotational movement of said torque generating unit, and a resistance sensing unit that is disposed for sensing the resistance applied by said resistance applying unit, said resistance applying unit including a fixed seat that is fixedly mounted to said supporting frame, a contact member that is pivotally connected to said fixed seat, a first link that is pivotally connected to said fixed seat, and a second link that is pivotally connected between said first link and said contact member, said fixed seat cooperating with said contact member, said first link and said second link to forma four-bar linkage, said resistance device being convertible between a standby state and a resistance applying state such that, when said resistance device is converted from the standby state to the resistance applying state, said contact member moves toward said torque generating unit, said first and second links being rotatable relative to each other when said resistance device is converted between the standby state and the resistance applying state, said resistance sensing unit including a magnetic member that is mounted to said second link and that is movable relative to said first link, and a Hall sensing module that is mounted to said first link, and that is disposed for outputting a sensing signal generated by magnetic field variation induced by a relative movement between said Hall sensing module and said magnetic member, said adjuster being mounted to said supporting frame, being connected to said resistance applying unit, and being operable to deform said four-bar linkage when said resistance device is in the resistance applying state, so as to change the resistance applied by said resistance applying unit. ### Claim 2 (depends on 1) The exercise equipment as claimed in claim 1, wherein said resistance applying unit further includes a resilient member mounted between said contact member and said fixed seat, and disposed for applying a resilient force to bias said contact member away from said torque generating unit. ### Claim 3 (depends on 2) The exercise equipment as claimed in claim 2, wherein said adjuster has an elongate rod portion extending through said supporting frame, having one end that abuts against said contact member such that said contact member is biased by said resilient member to contact said one end of said adjuster, and operable to move relative to said supporting frame toward or away from said contact member. ### Claim 4 (depends on 3) The exercise equipment as claimed in claim 3, wherein said contact member is movable to contact said torque generating unit through operation of said adjuster, so as to apply the resistance that is a frictional resistance between said contact member and said torque generating unit. ### Claim 5 (depends on 3) The exercise equipment as claimed in claim 3, wherein said contact member is movable to contact said torque generating unit through operation of said adjuster, so as to apply the resistance that is a magnetic resistance between said contact member and said torque generating unit. ### Claim 6 (depends on 1) The exercise equipment as claimed in claim 1, wherein said torque adjusting mechanism further includes a torque analyzer connected to said resistance sensing unit, and disposed for analyzing the sensing signal received and outputting a corresponding torque value, and a screen mounted to said supporting frame, and connected to said torque analyzer for displaying the torque value. ### Claim 7 A resistance device adapted to apply a resistance to torque generation of a torque generating mechanism, the torque generating mechanism including a supporting frame, and a torque generating unit that is rotatable on the supporting frame, said resistance device comprising: a resistance applying unit including a fixed seat that is fixedly mounted to the supporting frame, a contact member that is pivotally connected to said fixed seat, a first link that is pivotally connected to said fixed seat, and a second link that is pivotally connected between said first link and said contact member, said fixed seat cooperating with said contact member, said first link and said second link to forma four-arm linkage, said resistance device being convertible between a standby state and a resistance applying state such that, when said resistance device is converted from the standby state to the resistance applying state, said contact member moves toward said torque generating unit to apply the resistance, said first and second links being rotatable relative to each other when said resistance device is converted between the standby state and the resistance applying state; and a resistance sensing unit including a magnetic member that is mounted to said second link, and that is movable relative to said first link, and a Hall sensing module that is mounted to said first link, and that is disposed for outputting a sensing signal generated by magnetic field variation induced by a relative movement between said Hall sensing module and said magnetic member. ### Claim 8 (depends on 7) The resistance device as claimed in claim 7, wherein said resistance applying unit further includes a resilient member mounted between said contact member and said fixed seat, and disposed for applying a resilient force to bias said contact member away from said torque generating unit. ### Claim 9 (depends on 7) The resistance device as claimed in claim 7, wherein said contact member is movable to contact said torque generating unit through operation of said adjuster, so at to apply the resistance that is a frictional resistance between said contact member and said torque generating unit. ### Claim 10 (depends on 7) The resistance device as claimed in claim 7, wherein said contact member is movable to contact said torque generating unit through operation of said adjuster, so as to apply the resistance that is a magnetic resistance between said contact member and said torque generating unit.