  The one-boson exchange potential model for $\Lambda_cN$ is constructed and
the possibility of $\Lambda_cN$ bound states is examined. We consider an
effective Lagrangian for the charmed baryons, $\Lambda_c$, $\Sigma_c$, and
$\Sigma_c^*$, reflecting the heavy quark symmetry, chiral symmetry, and hidden
local symmetry. We determine the coupling constants using various methods. With
the derived nonrelativistic potentials, we study the bound state problem of the
$\Lambda_cN$ system and relevant coupled channel effects. It is found that
molecular bound states of $\Lambda_cN$ are plausible, for which the channel
couplings of $\Sigma_cN$ and $\Sigma_c^*N$ are essential.
