Roller for elevator door hangers comprising at least one insert
A roller ( 1 ) for elevator door hangers, comprising: a roller body ( 2 ) rotatable around a central rotation axis (X), said roller body ( 2 ) having an outer groove ( 4 ) destined to move along a guide rail, at least one insert ( 5 ) embedded within the roller body ( 2 ) and arranged below said groove ( 4 ).
1. A roller ( 1 ) for elevator door hangers, comprising:
a roller body ( 2 ) rotatable around a central rotation axis (X), said roller body ( 2 ) having an outer groove ( 4 ) destined to move along a guide rail;
at least one insert ( 5 ) embedded within the roller body ( 2 ) and arranged below said groove ( 4 ),
said at least one insert ( 5 ) being arranged below the groove ( 4 ) at a first predetermined distance from a lateral surface ( 2 c ) of the roller body ( 2 ),
characterized in that the roller ( 1 ) comprises a further insert ( 15 ) embedded and arranged below said groove ( 4 ) at a second predetermined distance from the lateral surface ( 2 c ) of the roller body ( 2 ), said second predetermined distance being different from the first predetermined distance.
2. The roller ( 1 ) according to claim 1 , wherein said at least one insert ( 5 ) has an elongated development in a radial direction.
3. The roller ( 1 ) according to claim 1 , wherein said at least one insert ( 5 ) has a tapered development from the central rotation axis (X) towards the groove ( 4 ).
4. The roller ( 1 ) according to claim 1 , wherein said at least one insert ( 5 ) is visually distinguishable from the roller body ( 2 ).
5. The roller ( 1 ) according to claim 4 , wherein said at least one insert ( 5 ) is made of a material having an external color that is different from the color of the roller body ( 2 ).
6. The roller ( 1 ) according to claim 4 , wherein said at least one insert ( 5 ) has an external pattern that is different from the roller body ( 2 ).
7. The roller ( 1 ) according to claim 1 , wherein the inserts ( 5 , 15 ) are spaced out from each other.
8. The roller ( 1 ) according to claim 1 , wherein the inserts ( 5 , 15 ) are at least partially overlapped.
9. The roller ( 1 ) according to claim 8 , wherein one insert ( 5 ) is entirely enclosed in the other insert ( 15 ).
10. The roller ( 1 ) according to claim 1 , wherein one insert ( 5 ) is longer than the other insert ( 15 ) according to the radial direction.