Caring machine, overhanging machine and main unit module comprised therein

A caring machine, capable of integrating various caring modules to offer a range of care functions, comprising a main unit module, a primary wheel module and a push module, wherein:

• the main unit module comprises a shifting module, a supporting frame module, and a coupling module;
• the shifting module comprises at least one chassis unit and a wheel caster set, wherein the wheel caster set is pivotally connected to two opposite sides of the chassis unit, the chassis unit comprises a flat upper surface suitable for a pedal;
• the chassis unit comprises a chassis body and a moving pedal, the chassis body is provided with a guide unit, the moving pedal is positioned on the chassis body, moving forward and securing at various locations through the guide unit;
• the wheel caster set comprises at least multiple universal wheel caster sets and a directional wheel caster set, the directional wheel caster set is mounted on side of the chassis unit and enclosed within a horizontal area formed by the vertices of the universal wheel caster sets, the directional wheel caster set comprises a directional wheel, an elastic device, and a switching device, wherein the continuous ground contact of the directional wheel through the action of the elastic device is maintained throughout the movement the switching device is used to controls the directional wheel's orientation so that the directional wheel is enabled to be fixed in a predefined direction or left in a freely rotatable state;
• the supporting frame module comprises multiple upright poles and multiple connecting plates, wherein one end of the upright poles is attached and secured to the chassis unit of the shifting module, while the other end of the upright poles is connected and fixed below the multiple connecting plates;
• and
• the coupling module comprising a plurality of coupling devices and coupling interfaces positioned on the shifting module the supporting frame module for attaching and securing caring modules with diverse functionalities;
• the coupling module comprises multiple first keyholes and a height adjustment device, the first keyholes are arranged on the upright pole along the vertical direction, and the height adjustment device is slidably mounted on the upright pole and locked with the upright pole through the first keyholes;
• the coupling interfaces further comprise multiple first mounting holes, and multiple second mounting holes, the multiple first mounting holes are provided on the connecting plate the multiple second mounting holes are arranged on the chassis unit;
• an electric module, positioned on the plurality of second mounting holes and securely fixed onto the chassis unit using fasteners, comprises a mounting base frame, a column module, a driving module, and a plurality of fastening devices;
• the mounting base frame, installed above the upper surface of the chassis unit through the second mounting hole;
• the column module, comprising a fixed bracket and a lifting bracket, with the fixed bracket securely installed on the mounting base frame, the lifting bracket positioned above the fixed bracket and capable of vertical movement, wherein multiple apertures are arranged vertically on the lifting bracket to facilitate the installation of the caring modules with different functions at adjustable heights;
• the driving module, mounted on the mounting base frame and used to facilitate the vertical movement of the lifting bracket;
• and
• the plurality of fastening devices located on the column module and securely locked at various heights of the lifting bracket through the apertures, the fastening devices are provided with multiple fastening interfaces designed for the installation of the caring module;
• the primary wheel module, installed on the main unit module, comprises two mounting brackets, two primary wheels, and two lifting devices;
• the two mounting brackets, symmetrically installed on main unit module, comprising multiple primary wheel shaft hole devices for installing the two primary wheels;
• the two lifting devices that are symmetrically installed on the mounting bracket or the wheel caster set, and each of the lifting devices comprises an overhead frame and a set of limiting pins, wherein the lifting device is used to elevate the wheel caster set connected to it, for installing or disassembling the primary wheel from the mounting bracket;
• the push module is disposed at the supporting frame module of the main unit module for maneuvering the main unit module, and comprises a handrail which is installed on said plurality of connecting plates.