Effort-saving paper punch

摘要

An effort-saving paper punch includes a lever pivot in position in relation to the lever, a lever pivot slot which receives the lever pivot in a way which enables the lever pivot to move towards the punching end in the resting position and away from the punching end in the punching position, and a longitudinal contact member which is fixedly disposed underneath the lever at a position corresponding to the punching members so that a first end of the longitudinal contact member which is farther away from the punching end abuts against the punching members in the resting position, and a second end of the longitudinal contact member which is nearer to the punching end abuts against the punching members in the punching position.

主权项

1. An effort-saving paper punch which comprises
a base with a plurality of punching holes disposed towards a punching end; a plurality of spring-loaded punching members disposed corresponding to the plurality of punching holes; a pair of vertical supports mounted on the base; a lever pivotably connected to the pair of vertical supports by means of a lever pivot to pivot between a resting position and a punching position, and the lever pivot is fixed in position in relation to the lever; characterized in that: a lever pivot slot is provided at each of the vertical supports for receiving the lever pivot in a way which enables the lever pivot to move towards the punching end in the resting position and away from the punching end in the punching position; a longitudinal contact member is fixedly disposed underneath the lever at a position corresponding to the punching members so that a first end of the longitudinal contact member which is farther away from the punching end abuts against the punching members in the resting position; and as the lever pivots from the resting position to the punching position, the first end of the longitudinal contact member moves farther away from the punching end until a second end of the longitudinal contact member which is nearer to the punching end abuts against the punching members in the punching position.