Brother S-7200C -. Tension release mechanism

7. MECHANICAL DESCRIPTIONS

S-7200C

７-７. Tension release mechanism

(Presser foot is raised using the

knee lifter plate (1))

(Presser foot is raised using the lifting lever)

(Thread trimming signal is input)

1. Knee lifter <1> Presser bar lifter lever [1] Thread trimmer solenoid

2. Knee lifter connecting rod [2] Solenoid lever

3. Knee lifter R [3] Tension release wire

4. Knee lifter complying bar

5. Knee lifter bar

6. Knee lifter lever

7. Knee lifter connecting rod

8. Presser bar lifter lever

9. Tension release plate

10. Tension release stud

11. Tension release pin

12. Tension disc presser

13. Tension disc (Lifts up)

(1) Knee lifter plate

(2) Presser bar lifter lever spring

When the presser foot is lowered, the

presser bar lifter lever spring (2)

causes the tension release plate 9 to

return.

When the thread trimming signal turns off,

parts such as the solenoid lever [2] and the

tension release wire [3] return to their original

positions.

4349M