Wiper arm head dual knuckle

A wiper arm head adapted to be connected to a wiper arm body, the wiper arm head comprises:

• a base end section, a front end section, and a body section having a pair of left and right side walls longitudinally extending from the base end section towards the front end section;
• a first retainer connection assembly and a second retainer connection assembly formed integrally with the wiper arm head and configured to connect the wiper arm head to the wiper arm body, which comprises a first retainer and a second retainer;
• wherein the first retainer connection assembly comprises a first protruding section protruding from the front end section and is formed with a first hinge shaft extending along its longitudinal direction from a first sidewall to a second sidewall of the first protruding section and it comprises a first through-hole to connect a proximal end portion of the first retainer with the wiper arm head through a first hinge pin disposed in the first through-hole;
• and
• wherein the second retainer connection assembly comprises a second protruding section protruding from the first protruding section and positioned downward of the first hinge shaft, and the second protruding section comprises:
• a second hinge shaft extending between a pair of second arm sections disposed at a predetermined interval, and having a second through-hole extending from one second arm section to the other second arm section through the second hinge shaft along its longitudinal direction to connect a proximal end portion of the second retainer with the wiper arm head through a second hinge pin disposed in the second through-hole.