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Stretching type breaker and stretching handle for the same

A circuit breaker and handle technology, which is applied to pull-out switch cabinets, switchgear, electrical components, etc., can solve the problems of excessive application, the main body of the circuit breaker is inserted into the pull-out frame, and the pins are broken.

Inactive Publication Date: 2008-05-28
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The conventional pull-out type circuit breaker is constructed in the above manner, and there is a problem that when the main body of the circuit breaker is pulled out from the pull-out frame, or when the main body of the circuit breaker is inserted into the pull-out frame, if the operator who pulls out the handle If you do not realize the need to release the lock of the main screw by the screw lock, and if you engage the pull-out handle with the main screw and turn it without releasing the lock, it will move toward the concave part of the screw lock. If excessive force is applied to the main screw pin in the engaged state, the pin may break, and if the pin breaks, the main body of the circuit breaker cannot be pulled out from the pull-out frame or the main body of the circuit breaker cannot be inserted into the pull-out frame

Method used

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  • Stretching type breaker and stretching handle for the same
  • Stretching type breaker and stretching handle for the same
  • Stretching type breaker and stretching handle for the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0024] figure 1 It is a perspective view showing a pull-out type circuit breaker and a pull-out handle according to Embodiment 1 of the present invention, figure 2 and image 3 It is a line showing the different operation states of the pull-out circuit breaker and its pull-out handle according to Embodiment 1 of the present invention. figure 1 A partial sectional view in the direction of the arrow of the A-A line, Figure 4 It is a perspective view showing a schematic configuration of a locking mechanism of a locking main screw of the pull-out circuit breaker according to Embodiment 1 of the present invention. Figure 5 It is a partially enlarged view of a lock plate and a cover plate of the pull-out circuit breaker according to Embodiment 1 of the present invention, Figure 6 is included along figure 2 The partial front view of the section in the arrow direction of the B-B line.

[0025] exist Figure 1 to Figure 6 Among them, a pull-out type circuit breaker 100 is co...

Embodiment approach 2

[0042] Figure 7 It is a perspective view of a pull-out type circuit breaker according to Embodiment 2 of the present invention, Figure 8 is its partial cross-section, Figure 9 is its partial front view. exist Figure 7 to Figure 9 Among them, a pull-out type circuit breaker 101 is composed of a pull-out frame 1000 and a circuit breaker main body 2000 that can be inserted into or drawn out from the pull-out frame 1000 . The rotating member 123 rotatably inserted into the round hole 121 of the cover plate 12 of the circuit breaker main body 2000 has a hexagonal through hole 1230 approximately the same size as the hexagonal hole 51 provided on the main screw 5 . In addition, four contact portions 1231 , 1232 , 1233 , and 1234 arranged at intervals of 90 degrees around the axis of the rotating member 123 are provided on the outer peripheral portion of the rotating member 123 . The rotating member 123 contacts the peripheral surface of the shaft portion 71 of the pull handle...

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PUM

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Abstract

A pull-type breaker has the following issues: if a handle level is directly operated under the state that the screw locking piece is blocked a pin of the main screw, the pin will be broken, without the pull and inserting operation of the breaker. When the screw locking piece (10) and the pin (6) of the main screw (5) are blocked to stop the main screw (5) to rotate, an end (131) of a locking plate (13) jointed with the screw locking piece (10) is blocked with the rotary pull handle (7) of the main screw (5) to stop the rotation of the pull handle (7). The damage to the structure parts caused by rotating forcibly the main screw in locking state can be prevented through making operators pulling the handle definitely realize the main screw in locking state.

Description

technical field [0001] The present invention relates to a pull-out type circuit breaker having a breaker main body mounted on a pull-out frame so as to be freely drawn and inserted, and a pull-out handle used for the pull-out type circuit breaker. Background technique [0002] As a pull-out type circuit breaker in which the main body of the circuit breaker is pulled out from the pull-out frame or inserted into the pull-out frame using a pull-out handle, the following structure has been proposed, which has an insertion screw fixed to the pull-out frame Upper; the main screw, which is freely rotatably arranged at a specified position on the main body of the circuit breaker, and can be screwed with the inserted screw; the screw lock, which has the function of locking the main screw by engaging with the pin fixed on the main screw The rotating concave part of the screw spring is kept pre-tightened in the direction of its engagement by the screw spring; and the lock plate, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B11/02H02B11/167
Inventor 福谷和则柿迫弘之
Owner MITSUBISHI ELECTRIC CORP