US 9,810,571 B1
Hand truck with a loading weighing mechanism
Chung-Hsiu Su, Kaohsiung (TW)
Filed by Chung-Hsiu Su, Kaohsiung (TW)
Filed on Dec. 15, 2016, as Appl. No. 15/379,831.
Int. Cl. B62B 1/10 (2006.01); B62B 1/12 (2006.01); B62B 1/18 (2006.01); B62B 1/20 (2006.01); G01G 1/00 (2006.01); G01G 19/08 (2006.01); B62B 5/00 (2006.01)
CPC G01G 19/083 (2013.01) [B62B 1/12 (2013.01); B62B 5/00 (2013.01); B62B 2203/50 (2013.01); B62B 2205/30 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A hand truck comprising:
a truck frame extending in an upright direction to have upper and lower frame ends;
a toe plate having a loading surface which is disposed to extend forwardly of and transverse to said truck frame for carrying objects thereon, said toe plate being pivotably connected to said lower frame end of said truck frame about a pivot axis to be turnable relative to said truck frame between a folded position, where said loading surface extends parallel to said truck frame, and an unfolded position, where said loading surface extends transverse to said truck frame and faces upwardly; and
a load measuring assembly disposed on said truck frame adjacent to said toe plate and spaced apart from said loading surface to measure weight of the objects set on said loading surface, said load measuring assembly including a force measuring unit disposed on said truck frame to receive and measure a force in the upright direction, and a force transferring unit interconnecting said toe plate and said force measuring unit to transfer the weight of the objects as the force to said force measuring unit, said force transferring unit including a force transmitting portion which extends transverse to said loading surface to terminate at a mounting rim, and a contact portion which is mounted on said mounting rim, said loading surface and said force transmitting portion being disposed at two opposite sides of the pivot axis such that, when said toe plate is in the folded position, said mounting rim of said force transmitting portion faces rearwardly to bring said contact portion remote from said force measuring unit, and such that, when said toe plate is in the unfolded position, said mounting rim faces upwardly to bring said contact portion into contact with said force measuring unit, and the weight of the objects set on said loading surface causes an upward movement of said force transmitting portion and said contact portion to apply an upward force to said force measuring unit.