An automatic direction switching pendulum-type rotary drive ratchet for an indirect live wire, the automatic direction switching pendulum-type rotary drive ratchet comprising:
- a body (100) having a lever installation part (110) formed on one side thereof;
- a rotary operating lever (200) comprising a rotary operating shaft (210), a cam (220), a rotary operating mechanism (230), and a buffer key (200), wherein the rotary operating shaft (210) is axially installed in the lever installation part (110) and has a rotating ring (211), wherein the cam (220) is disposed at a tip portion of the rotary operating shaft (210) and is formed at a location eccentric from a central portion of the tip portion, wherein the rotary operating mechanism (230) is rotatably coupled to the rotary operating shaft (210) at a rear side of the cam (220), has a movable long hole (231) formed in a circumferential direction thereof, and has a locking protrusion (232) formed to protrude from a circumference thereof, wherein the buffer key (240) connects the rotary operating shaft (210) to the rotary operating mechanism (230);
- a pendulum drive shaft (300) axially installed in the body (100) from the other side of the body (100) and formed to penetrate the body (100) in a forward-and-rearward direction of the body (100);
- a clutch part (400) disposed on a front side of the body (100) and coupled to a periphery of the pendulum drive shaft (300), wherein the clutch part (400) prevents reverse rotation of an inner ring and operates forward or reverse rotation of the pendulum drive shaft (300) through simultaneous reverse rotation of the inner ring and an outer ring;
- a pendulum drive shaft operating plate (500) disposed on a front side of the clutch part (400) and coupled to the periphery of the pendulum drive shaft (300), wherein the pendulum drive shaft operating plate (500) has saw teeth (510) formed around a middle portion thereof;
- a pendulum (600) coupled to a rear side of the pendulum drive shaft operating plate (500) and formed to protrude toward one side thereof so as to have a horizontal long hole (610) configured to accommodate the cam (220) therein, wherein the pendulum (600) performs reciprocating pendulum motion relative to the pendulum drive shaft (300) by operation of the cam (220) and has an automatic revering pawl mounting groove (620) formed in a front surface thereof and disposed between the rotary operating shaft (210) and the pendulum drive shaft operating plate (500);
- a support plate (700) formed to penetrate a front circumference of the pendulum drive shaft operating plate (500) and coupled to the pendulum (600), wherein the support plate (700) is formed to protrude toward one side thereof;
- an automatic reversing pawl (800) having a pawl shaft (801) coupled to the automatic revering pawl mounting groove (620), wherein the automatic reversing pawl (800) interferes with the pendulum drive shaft operating plate (500) and operates in reciprocating motion so as to provide forward or reverse rotational force of the pendulum drive shaft operating plate (500);
- a pawl reversing key (900) coupled to the pawl shaft (801) with the automatic reversing pawl (800) and formed to protrude from the support plate (700) toward one side thereof, wherein the pawl reversing key (900) interferes with the locking protrusion (232) during rotation of the rotary operating mechanism (230) so as to provide reciprocating rotational force of the automatic reversing pawl (800), and wherein the pawl reversing key (900) has first and second reversing key spring balls (910) and (910′) installed thereon so as to constantly maintain horizontality thereof, wherein the first and second reversing key spring balls (910) and (910′) are formed to be symmetrical relative to the pawl shaft (801);
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- a pendulum drive shaft rotary lever (1000) disposed on a front side of the pendulum drive shaft operating plate (500) and coupled to the pendulum drive shaft (300) and the pendulum drive shaft operating plate (500).