1. MECHANICAL DESCRIPTIONS
HE-800A
2
1-2. Upper shaft, lower shaft and rotary hook mechanisms
1. When the machine pulley (1) is turned in the direction of the arrow, the rotation is transmitted to timing pulley U
(3) that is secured to the upper shaft (2).
2. The timing belt (4) is attached to timing pulley U (3), and it accurately transmits the rotation of the upper shaft to
the timing pulley (5).
3. The timing pulley (5) is secured to the lower shaft (6), and it transmits the rotation to the rotary hook joint (7) that
is secured to the end of the lower shaft (6).
4. The rotary hook (8) is secured to the rotary hook joint (7) and rotates fully together with the rotary hook joint (7).
Rotation direction
4048Q