  The coupling between small and large scale structures and processes on the
Sun and in the heliosphere is important in the relation to the global magnetic
configuration. Thin heliospheric current sheets play the leading role in this
respect. The simple analytical model of the magnetic field configuration is
constructed as a superposition of the three sources: 1) a point magnetic dipole
in the center of the Sun, 2) a thin ring current sheet with the azimuthal
current density j_{\varphi} ~ r^{-3} near the equatorial plane and 3) a
magnetic quadrupole in the center of the Sun. The model reproduces, in an
asymptotically correct manner, the known geometry of the field lines during the
declining phase and solar minimum years near the Sun (the dipole term) as well
as at large distances in the domain of the superalfvenic solar wind in the
heliosphere, where the thin current sheet dominates and |B_{r}(\theta)|=const
according to Ulysses observations (Balogh et al., 1995; Smith et al., 1995).
The model with the axial quadrupole term is appropriate to describe the
North-South asymmetry of the field lines. The model may be used as a reasonable
analytical interpolation between the both extreme asymptotic domains (inside
the region of the intermediate distances ~ (1-10)R_sun) when considering the
problems of the solar wind dynamics and cosmic ray propagation theories.
