Title:
AUXILIARY WHEELS, AND CARGO TRANSPORT WHEELBARROW OR BICYCLE HAVING THE SAME
Document Type and Number:
Japanese Patent JP2023057343
Kind Code:
A
Abstract:
To provide a cargo transport wheelbarrow having auxiliary wheels which, when an aged construction worker works at a construction site where there are irregularities on a ground surface, does not fall even if a wheel tilts.SOLUTION: When a wheel 50 rotatably held on a body frame tilts leftward or rightward in an advancing direction, a pair of auxiliary wheels 101A and 101B limit the tilt of the wheel 50. The auxiliary wheels 101A and 101B include: first stationary link plates 31A and 31B which are fixed to the body frame, second stationary link plates 38A and 38B which rotatably hold auxiliary wheels 40A and 40B, respectively; pairs of parallel movable links 34A and 34B, and 35A and 35B which couple the first stationary link plates 31A and 31B and the second stationary link plates 38A and 38B, respectively; and energizing springs 36A and 36B which have one ends connected to the second stationary link plates 38A and 38B, have the other ends connected to the first stationary link plates 31A and 31B, and energize the auxiliary wheels 40A and 40B downward.SELECTED DRAWING: Figure 1
Inventors:
SUGIYAMA TAKASHI
ONODA TAKAHIRO
HAYASHI YOSHINOBU
ONODA TAKAHIRO
HAYASHI YOSHINOBU
Application Number:
JP2021166823A
Publication Date:
April 21, 2023
Filing Date:
October 11, 2021
Export Citation:
Assignee:
IITEKKU KK
International Classes:
B62H1/12; B62B1/18
Attorney, Agent or Firm:
Patent Attorney Corporation Cosmos International Patent and Trademark Office