Sanyo VHR-1110 Series - Outline of Mechanism Operation

1-2. OUTLINE OF MECHANISM OPERATION
The greatest change compared to former models (VHR-
1100, VHR-1300 and VHR-1500 series) is the change of
rotation of both reel bases from the reel motor to the
capstan motor.
well as the movement of both guides, the transition device
to each mode, and the safety device, are fundamentally the
same as for previous models (VHR-1100, VHR-1300 and
VHR-1500 series), so their description is omitted here.
1-3. DIFFERENCES FROM PREVIOUS MODELS
(VHR-1100, VHR-1300 and VHR-1500 series)
There are five points which are different, regarding the
mechanism’s main components, between this mechanism
and that of former models.
The operation of those components is described below.
1-3-1. Method of drive transmission of both reel bases
By using this mechanism, the reel motor is eliminated, and
the rotation of the capstan is transmitted via the belt to the
main slip gear; the direction of reel base rotation depends
upon the direction of rotation of the capstan.
As a result, it can be seen that the function of the newly
added main slip gear is very important.
Figure 1-3-1 shows the rotation-transmission system.
*Main slip gear:
The slip mechanism functions during the PLAY, REC,
F/R-SEARCH and SLOW modes.
In other words, because force is transmitted from the
pulley gear to the drive gear via the felt for slippage during
these modes, the rpm of the drive gear is caused to be
reduced to less than the rpm of the pulley gear. The pulley
gear and the drive gear are locked during the F-FWD and
REW
modes,
with
the
result
that
the
rotation
of
the
pulley
gear and of the drive gear is the same rotation.
* Review gear:
The review gear is engaged with the main slip gear during
the R-SEARCH mode.
Capstan Motor
Main slip gear
Drive gear
Pulley gear
Supply, Take-up reel base
Drive gear
Felt for
slippage
Pulley gear
Roller Assy.
Fig. 1-3-1