Patent ID: 7540093

Claim:
A pair of gardening shears, comprising: a handle having a lower end provided with a pivot head; a drive member mounted in the handle; a control lever pivotally mounted on an upper end of the handle and connected to an upper end of the drive member to drive the drive member; a transmission device mounted on the pivot head of the handle; two cutting blades pivotally mounted on the transmission device and driven by the drive member via the transmission device; the transmission device including: a housing on which the pivot head of the handle is pivotally mounted; a pivot plate mounted in the housing and having a first end pivotally mounted on a lower end of the drive member to move therewith; a catch plate mounted in the housing; a link movably mounted in the housing and having a first end pivotally mounted on a second end of the pivot plate to move therewith and a second end protruded outwardly from the housing and pivotally mounted on one of the cutting blades; a catch flange mounted on the link; a restoring member mounted on the link and biased between the catch flange and the catch plate; wherein the pivot head of the handle has an outer wall provided with a receiving recess having a periphery formed with a plurality of tooth-shaped locking grooves; the housing has a side wall formed with a receiving hole having a periphery formed with a plurality of tooth-shaped locking slots; the transmission device further includes a locking member movably mounted between the pivot head of the handle and the housing and having a periphery formed with a plurality of locking teeth which are locked in the locking grooves of the pivot head and are detachably locked in the locking slots of the housing to lock the pivot head onto the housing, an elastic member mounted between the pivot head of the handle and the locking member to push the locking member toward the locking slots of the housing, and a press button movably mounted on the housing and connected to the locking member to push the locking member to detach from the locking slots of the housing.