A hammer tacker is provided, including a grip portion and a body portion; a magazine, including a rail, at least partially received in the housing, being movable relative to the housing between a stapling position and a staple-installing position, including an outlet disposed at a front end of the body portion; a biasing mechanism, including a push member movably mounted to the rail and a constant force spring which is rollable, the constant force spring being positionally attached to the rail through a connection portion and located at a front end of the magazine, and the constant force spring being attached to an inner face of the push member, the push member being movable to be correspondingly above or beyond the connection portion; a striking mechanism, mounted to the body portion and configured to strike at least one staple installed in the magazine.

A preferably pliers type stapler is disclosed with a staple loading structure that is both simplified and easy to operate. A lower handle and base are connected to the body through a pivoting and cam system. A single motion pulls the lower handle and base away from the body to expose a staple track location for loading staples at a bottom of the body. Preferably the same single motion releases the track to move outward from a rear of the body. In one embodiment a compact simplified structure using a preferably torsion spring provides a low cost reliable spring energized system.

A preferably pliers type stapler is disclosed with a staple loading structure that is both simplified and easy to operate. A lower handle and base are connected to the body through a pivoting and cam system. A single motion pulls the lower handle and base away from the body to expose a staple track location for loading staples at a bottom of the body. Preferably the same single motion releases the track to move outward from a rear of the body. In one embodiment a compact simplified structure using a preferably torsion spring provides a low cost reliable spring energized system.

A hammer tacker includes an outer housing comprising a handle portion and a head portion, the outer housing formed from a fiber reinforced polymer material. The hammer tacker also includes an elongated staple holder carried at least partially within the outer housing, the elongated staple holder being slideable between a use position and a refill position. The outer housing having the fiber reinforced polymer material defines a channel extending through the handle portion and into the head portion, the channel configured to receive the staple holder. The staple holder is slidable along the channel of the outer housing between the use position and the refill position. The hammer tacker further includes a staple driver assembly operable to drive a staple from the staple holder into a workpiece.

A hammer tacker includes an outer housing comprising a handle portion and a head portion, the outer housing formed from a fiber reinforced polymer material. The hammer tacker also includes an elongated staple holder carried at least partially within the outer housing, the elongated staple holder being slideable between a use position and a refill position. The outer housing having the fiber reinforced polymer material defines a channel extending through the handle portion and into the head portion, the channel configured to receive the staple holder. The staple holder is slidable along the channel of the outer housing between the use position and the refill position. The hammer tacker further includes a staple driver assembly operable to drive a staple from the staple holder into a workpiece.

A novel quick fastening device comprises a base, an energy storage medium, an impact unit and a driving mechanism; the driving mechanism includes an annular gear, a driving shaft, a crank, a planet gear; the planet gear is placed in the annular gear and engaging with the annular gear, so that it can implement revolution against annular gear, the planet gear implements rotation at the upper end of crank; a clamp shaft for connecting the impact unit is located in the upper end of the connecting rod, the lower end of driving shaft is connected to the rotating energy release unit; the annular gear-planet gear structure to implement the conversion of rotary motion into reciprocating motion, the kinematic trajectory of clamp shaft on the connecting rod approximates to a straight line, so as to reduce the kinetic friction force of load to the maximum extent to avoid wear.

A fastener driving tool includes a housing unit with a fastener striking opening, a striking member with an engaging slot, a locking member with a front engaging end detachably engaged to the engaging slot, and a handle unit pivoted on the housing unit. When the handle unit is pressed down to shift the driving tool from an initial to an energy-storing state, the locking member is driven to move the striking member away from the striking opening. When the handle unit is pressed down continuously to shift the driving tool from the energy-storing to a striking state, the front engaging end is driven to disengage from the engaging slot, and the striking member is driven to move down to the striking opening for performing a striking stroke.

A fastener driving tool includes a housing unit with a fastener striking opening, a striking member with an engaging slot, a locking member with a front engaging end detachably engaged to the engaging slot, and a handle unit pivoted on the housing unit. When the handle unit is pressed down to shift the driving tool from an initial to an energy-storing state, the locking member is driven to move the striking member away from the striking opening. When the handle unit is pressed down continuously to shift the driving tool from the energy-storing to a striking state, the front engaging end is driven to disengage from the engaging slot, and the striking member is driven to move down to the striking opening for performing a striking stroke.

A fastener driving tool includes a magazine unit, a handle, a striking plate, an energy restoring member and a wire bending spring disposed to a housing unit. The housing unit includes an inner housing assembly made from a plastic material, and an outer housing assembly made from a metal material and covering the inner housing assembly. The wire bending spring is biased for storing a striking energy for the striking plate, and includes an extending section and a backwinding section. The extending section has first and second ends. The backwinding section is connected with the second end, and extends and bends toward the first end to terminate at a terminal end portion. The ratio of a height to a width ranges from 1:1 to 1:1.6.

A fastener driving tool includes a magazine unit, a handle, a striking plate, an energy restoring member and a wire bending spring disposed to a housing unit. The housing unit includes an inner housing assembly made from a plastic material, and an outer housing assembly made from a metal material and covering the inner housing assembly. The wire bending spring is biased for storing a striking energy for the striking plate, and includes an extending section and a backwinding section. The extending section has first and second ends. The backwinding section is connected with the second end, and extends and bends toward the first end to terminate at a terminal end portion. The ratio of a height to a width ranges from 1:1 to 1:1.6.