Padlock having a large lock opening

A padlock having a latch with a large field angle, comprising a pair of opposed casings, a latch disposed within the pair of opposed casings, a pushing block for driving the latch to pivot and a number selecting means controlling the pushing block to shift,

• wherein said pair of opposed casings are combined to define a cavity at a lower corner of one side of the combination of the casings, a notch at a top portion thereof and a pair of through-holes at both of two side walls defining the notch for the latch to extend therethrough,
• one of said opposed casings has a boss and a pillar extending from an inner wall thereof for the latch and a torsional spring to be mounted respectively thereon;
• and
• said latch is formed as a rod extending from the through-holes of the casings and has an arm extending from one end thereof, said arm defines a hole therein to receive the boss of the casing and has a stop and a retainer respectively extending from a periphery defining the hole, and
• said pushing block has a vertical portion and a horizontal portion, the vertical portion being exposed by the cavity of the casings for being pushed by the user in a direction toward the number selecting means, the vertical portion having a rod extending from an inner face thereof on which a spring and the number selecting means are sequentially set, the horizontal portion defining a recess therein for mating with the stop of the latch and driving the latch to pivot in a direction toward the cavity.