JPS61167350U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a simplified front view of a circuit breaker implementing this invention, Fig. 2A is a disconnection position, Fig. 2B is a test position, Fig. 2C is a simplified side view showing the extraction operation in the test position, and Fig. 3 is a partial side view showing the relationship between the worm and the worm wheel, FIG. 4 is a center cross-sectional side view of the main body of the circuit breaker according to this invention in the closed state, FIG. 5 is a side view showing the closing spring in the charged state, and FIG. Fig. 6 is a side view showing the release state of the closing spring, Fig. 7 is a partially sectional side view showing the released state, Fig. 8 is a partially sectional side view showing the reset (open circuit) state, and Fig. 9 10 is a perspective view of the main parts of the automatic closing spring release device, and FIGS. 11 and 12 are simplified operation explanatory diagrams of the automatic closing spring release device. 12 is a diagram showing an operating state in which the circuit breaker main body is in the extraction process and the closing spring is not released, FIG. 12 is a diagram showing a state in which the closing spring is released, and FIG. It is a figure showing the shape of an example. In the figure, 1: circuit breaker body, 2: fixed frame, 3: front cover, 4: extraction roller, 5: mounting member, 6
: Extraction rail, 8: Worm wheel, 9: Worm, 10: Worm shaft, 11: Extraction operation hole,
12: Shutter plate, 13: Extraction lever, 14: Extraction lever roller, 15: Guide member, 16: Extraction lever guide groove, 17, 17': Movable side main circuit connector, 18: Insulated terminal block, 19, 19' : Fixed side main circuit connector, 20: Movable side control circuit connector, 2
1: Fixed side control circuit connector, 22: Support frame member,
31: Fixed main contact, 32: Fixed arcing contact, 33: Movable main contact, 34: Movable arcing contact, 35: Movable main contact rod, 36: Movable arcing contact rod, 38
: Movable contact holder, 39: Contact spring, 41: Movable contact support plate, 42:
Flexible lead conductor, 43: Frame, 44: Mold base, 45: Operation rod, 46: Connection adjustment bolt, 48: Cross bar, 49: Connector lever, 50: Feeding link, 51: Feeding roller shaft, 52
:Tritup Link, 54:Tritup Lever, 57
: Cutoff spring, 58: Closing roller, 59: Closing latch, 60: Closing shaft, 61: Trip lever spring, 62: Hook, 42: Foot crawler, 45: Trigger lever, 68: Open/close indicator link, 69: Open/close indicator, 71: Open/close interlock lever, 72: Release lever,
74: Opening/closing interlock link, 76: Closing button, 77: Handle shaft, 78: Closing release claw, 79: Closing release plate, 80: Closing cam, 81: Holding roller, 82: Trigger interlocking lever, 85: Trigger link, 87, 89: Trigger spring, 90: Hook interlocking lever, 92: Hook link, 96: Closing crank, 98: Closing spring.

Claims (1)

[Scope of Claim for Utility Model Registration] Connecting, testing, and disconnecting the circuit breaker body from a fixed frame by connecting an operating handle to a worm shaft and rotating the worm wheel shaft equipped with a worm wheel that engages with the worm of the worm shaft. The device is operated to be extracted and inserted into position, and the stored force of the closing spring is held by a release lever and a closing release pawl that engages with the release lever, and the engagement is released and the closing spring is released. A circuit breaker that closes the opening/closing mechanism by releasing stored force, the circuit breaker comprising: a position detection protrusion integrally attached to the worm wheel shaft; and an actuation piece attached to rotate integrally with the closing release pawl. , a discharge lever whose central portion is rotatably supported, has an actuation pin at one end that corresponds to the position detection protrusion piece, and whose other end corresponds to the actuation piece of the loading release pawl; In preparation, if the circuit breaker main body is extracted while the closing spring is in a stored state, the main circuit and the secondary disconnection part are disconnected during the extraction process, and the position detection protrusion piece is used between the disconnection positions. Automatic release of closing spring of an extraction type circuit breaker, characterized in that the displacement lever rotates the closing release pawl via the operating pin, disengaging from the release lever and releasing the closing spring. Device.