Fastener driver
A fastener driver includes a striking assembly including a striking member configured to strike a fastener; a drive assembly configured to drive the striking member, and an electric motor providing a driving force for at least the drive assembly. The drive assembly includes a drive wheel configured to engage with the striking member to drive the striking member to move along the extension direction of the striking member; a transmission box accommodating at least the drive wheel; and a fixed shaft non-rotatably mounted onto the transmission box to support the drive wheel.
1 . A fastener driver, comprising:
a striking assembly comprising a striking member configured to strike a fastener;
a drive assembly configured to drive the striking member and comprising a drive wheel configured to engage with the striking member to drive the striking member to move along an extension direction of the striking member, a transmission box accommodating at least the drive wheel, and a fixed shaft non-rotatably mounted onto the transmission box to support the drive wheel; and
an electric motor providing a driving force for at least the drive assembly, wherein the fixed shaft comprises a first end fixed to the transmission box and a second end for mounting the drive wheel.
2 . The fastener driver of claim 1 , wherein the first end is configured to be an end facing away from the electric motor, and the second end is configured to be an end facing the electric motor.
3 . The fastener driver of claim 1 , wherein the transmission box comprises an upper cover and a lower cover, and the first end is fixed on the upper cover.
4 . The fastener driver of claim 3 , wherein the drive wheel is disposed between the first end and the lower cover.
5 . The fastener driver of claim 1 , wherein the drive assembly further comprises a support bearing, and the support bearing is configured to support the drive wheel.
6 . The fastener driver of claim 5 , wherein the support bearing is sleeved on the second end.
7 . The fastener driver of claim 5 , wherein the support bearing is accommodated in a wheel cavity of the drive wheel.
8 . The fastener driver of claim 1 , wherein a length of the first end is greater than or equal to 10 mm and less than or equal to 20 mm.
9 . The fastener driver of claim 1 , further comprising a transmission assembly, wherein the transmission assembly comprises a drive shaft, and the drive wheel is rotatably connected to the drive shaft.
10 . The fastener driver of claim 9 , wherein the drive wheel is provided with a flat portion connectable to the drive shaft.
11 . A fastener driver, comprising:
a striking assembly comprising a striking member configured to strike a fastener;
a drive assembly configured to drive the striking member and comprising a drive wheel configured to engage with the striking member to drive the striking member to move along an extension direction of the striking member, a support bearing that at least partially overlaps axially with the drive wheel, and a fixed shaft for concentrically mounting the support bearing and the drive wheel; and
an electric motor providing a driving force for at least the drive assembly.
12 . The fastener driver of claim 11 , wherein a ratio at which the support bearing and the drive wheel overlap axially is greater than or equal to 0.5.
13 . The fastener driver of claim 11 , further comprising a transmission box, wherein an end of the fixed shaft is fixedly mounted onto the transmission box, and another end of the fixed shaft is accommodated in the transmission box.
14 . The fastener driver of claim 13 , wherein the support bearing is sleeved on the end of the fixed shaft accommodated in the transmission box.
15 . The fastener driver of claim 11 , wherein the support bearing is accommodated in a wheel cavity of the drive wheel.