Pipe cutting knife

摘要

The present patent application discloses a pipe cutter, comprises a left housing, a right housing, a blade, small handle, a rotary shaft and a reset mechanism; the left housing and the right housing are fixed together; the blade is rotatable located between the left housing and the right housing; the rotary shaft pass through the left housing and the blade and is fixed with the right housing; the small handle is provided with a blade feeding apparatus and a blade locking apparatus, the blade feeding apparatus is used for controlling the rotation of the blade, the blade locking apparatus is used for fixing the position of the blade; the small handle is mounted on one side of the left housing and the right housing, the small handle is hinged with the left housing and the right housing through blade locking apparatus; the blade is provided with tooth grooves and hook portion, the hook portion is mounted on the left side of the tooth grooves and adjacent to the tooth grooves 8. By cooperation of the using of the blade feeding apparatus and the blade locking apparatus, the operator can cut the plastic pipe with less effort. Meanwhile, the blade locking apparatus ensures the blade will not rebound and improves the effectiveness of pipe cutting. The blade replacement is also convenient.

主权项

1. A pipe cutter, comprising:
a left housing; a right housing comprising a rail; a blade; a handle; a rotary shaft; and a reset mechanism configured to reset the blade; wherein the left housing and the right housing are fixed together; the blade is rotatable located between the left housing and the right housing; wherein the blade is provided with a plurality of teeth grooves and a hook portion, the reset mechanism is located in the right housing; the reset mechanism extends along with a rotation of blade; wherein the reset mechanism comprises a tension spring and a pulley, the tension spring is attached to a groove of the pulley, one end of the tension spring is fixed to the right housing, another end of the tension spring is a hook which hooks the hook portion of the blade; the tension spring slides in the rail, the pulley is mounted on a corner of the rail; and wherein the blade comprises a cutter edge portion, a through hole and a circular arc portion; the circular arc portion is located at one side of the teeth grooves and adjacent to the teeth grooves; the through hole coordinates with the rotary shaft; the cutter edge portion is positioned below the circular arc portion, one end of the cutter edge portion is adjacent to the circular arc portion, another end of the cutter edge portion is adjacent to the hook portion; the cutter edge portion comprises an upper edge and a lower edge and a connecting corner which is located between the upper edge and the lower edge.