Footrest apparatus
View Patent ↗A footrest apparatus for a wheelchair and the like has a pair of supporting frame configurations supporting a pair of foot plates to be position in a first position for use and a second position for transportation and/or storage. Each of the supporting frame configurations has a connecting shaft rotatably received in a vertical tube of a front wheel assembly. The vertical tube is affixed to a frame structure of the wheelchair and the like. The connecting shaft and the vertical tube in combination bear and transfer a foot load of the user and therefore a locking device provided between the connecting shaft and the vertical tube for locking the connecting frame configuration in a selected one of the first and second positions, will not bear the foot load, resulting a configuration convenience for conducting an unlock action.
1. A device for assisting a user with mobility, comprising: a frame structure supported on a plurality of wheels rotatably attached to the frame structure, a seat member attached to the frame structure and a pair of footrest assemblies, each of the footrest assemblies including a supporting frame configuration supporting a foot plate, each of the supporting frame configurations including a connecting shaft rotatably inserted downwardly into an upper end of a respective one of a pair of vertical tubes affixed to a front end and at respective sides of the frame structure, to allow the supporting frame configuration to rotate about said one of the vertical tubes between a first angular position in which the supporting frame configuration extends forwardly to position the foot plate in front of the frame structure and a second angular position in which the supporting frame configuration is folded backward and adjacent a side of the frame structure, each of the connecting shafts having an annular radial shoulder resting on an annular surface of the upper end of the vertical tube to support a foot load, each of the connecting shafts including two elastically compressible spring-buttons, at least one of the spring-buttons being compressed radially inwardly into the connecting shaft by a cylindrical inner surface of the vertical tube when the supporting frame configuration is in any angular position about the vertical tube, and only one of the spring-buttons radially and outwardly extending from the connecting shaft into a hole in the vertical tube when the supporting frame configuration is in either one of the first and second angular positions.
2. The device as defined in claim 1 wherein the wheels comprise a pair of front wheel assemblies, each of the front wheel assemblies including a fork shaft rotatably received in a low end of one of the vertical tubes.
3. The device as defined in claim 2 wherein the two spring-buttons are diametrically opposed about the connecting shaft of each supporting frame configuration.
4. The device as defined in claim 2 wherein the hole defined in the respective vertical tubes is located at an outermost side of the respective vertical tubes with respect to the frame structure.
5. The device as defined in claim 2 wherein each of the supporting frame configurations comprises a plate shaft, the foot plate being pivotally connected to and pivotable about the respective plate shafts between an extended position in which the respective foot plates extend toward each other substantially transverse with respect to the frame structure when the respective supporting frame configuration is in the first angular position, and a folded position in which the foot plate extend substantially upwardly from the plate shafts, respectively.
6. The device as defined in claim 2 wherein each of the supporting frame configurations comprises telescopically connected inner and outer tubes, the inner tube being connected to one of the plate shafts and the outer tube being connected to one of the connecting shafts.
7. The device as defined in claim 6 wherein each of the inner tubes comprises a pair of diametrically opposed spring-buttons selectively engageable in a plurality of pairs of holes defined in each of the outer tubes to lock a connected one of the foot plates in a selected height position.