Caster, a construction block set comprising the caster and a method of producing the caster

Abstract

A caster, a construction block set comprising the caster and a method of producing the caster. The caster comprises a housing and a wheeled member rotatably attached to the housing, wherein the housing includes an integrated connecting structure arranged to facilitate a separable connection between the housing and a modular assembly, thereby providing a wheeled function to the modular assembly when the caster is installed.

1 . A caster comprising a housing and a wheeled member rotatably attached to the housing, wherein the housing includes an integrated connecting structure arranged to facilitate a separable connection between the housing and a modular assembly, thereby providing a wheeled function to the modular assembly when the caster is installed. 
     
     
         2 . A caster in accordance with  claim 1 , wherein the wheeled member comprises a wheel body and a pair of spindles fixed on opposite sides of the wheel body, wherein the wheeled body is rotatably attached to opposite side walls of the housing via the pair of spindles. 
     
     
         3 . A caster in accordance with  claim 2 , wherein the wheel body comprises a spherical shape, and the housing comprises a substantially rectangular shape. 
     
     
         4 . A caster in accordance with  claim 3 , wherein the housing includes side walls with a thickness of 1.2 mm to 1.5 mm. 
     
     
         5 . A caster in accordance with  claim 3 , wherein the wheeled body includes a diameter of 11 mm. 
     
     
         6 . A caster in accordance with  claim 3 , wherein the wheeled body the side walk of the housing are separated by a gap of 1 mm to 2 mm at minimum. 
     
     
         7 . A caster in accordance with  claim 2 , wherein a portion of the wheel body extends beyond a lowermost edge of the housing, and wherein the wheel body is arranged to contact with a lower surface where the modular assembly is placed thereon. 
     
     
         8 . A caster in accordance with  claim 7 , wherein the integrated connecting structure includes at least one stud or knob arranged to engage with one or more tubes or bar structures on the modular assembly. 
     
     
         9 . A caster in accordance with  claim 8 , wherein the modular assembly comprises a brick, a plate or a tile defined with the one or more tubes or bar structures. 
     
     
         10 . A caster in accordance with  claim 9 , wherein the modular assembly defines a body of a toy car built with a plurality of bricks, plate or tile. 
     
     
         11 . A caster in accordance with  claim 8 , wherein the at least one stud or knob are provided on a top surface  102 T of the housing. 
     
     
         12 . A caster in accordance with  claim 3 , wherein the housing is made of ABS, and wherein the wheeled member is made of ABS or TRP. 
     
     
         13 . A method of producing a caster in accordance with  claim 12 , comprising the steps of:
 providing a housing and a wheeled member as separate components; and   assembling the caster by connecting the wheeled member to the housing.   
     
     
         14 . A method of producing a caster in accordance with  claim 13 , wherein the wheeled member is assembled with the housing via press fitting. 
     
     
         15 . A method of producing a caster in accordance with  claim 13 , wherein the housing and/or the wheeled member is made by injection molding. 
     
     
         16 . A construction block set comprising a plurality of bricks, plate or tile arranged to form a modular assembly when being connected together via integrated connecting structures provided thereon, and one or more casters in accordance with  claim 1 .