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Dial device, and circuit breaker using the same

A dial and knob technology, applied in circuits, circuit devices, emergency protection circuit devices, etc., to prevent the inability to operate the dial

Active Publication Date: 2019-07-16
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention is made in order to solve the above-mentioned problems, and provides a dial device and a circuit breaker using the dial device. In this dial device, it is prevented that the dial cannot be operated due to the fitting and disengagement of the rotary switch and the dial.

Method used

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  • Dial device, and circuit breaker using the same
  • Dial device, and circuit breaker using the same
  • Dial device, and circuit breaker using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] use Figure 1~5 , the overall configuration of the circuit breaker shown in Embodiment 1 of the present invention will be described. figure 1 and figure 2 These are a perspective view and a plan view showing the appearance of a circuit breaker to which the present invention is applied, respectively. image 3 and Figure 5 It is a perspective view and a plan view showing the internal structure of the circuit breaker to which the present invention is applied with the device cover removed, respectively, Figure 4 yes figure 2 Sectional view of section X-X of the circuit breaker shown.

[0036] The circuit breaker 100 of the present invention is composed of a device base 1 serving as a container for housing components, and a device cover 2 covering the components. Moreover, it has a plurality of load side connection terminals 3 and a plurality of power supply side connection terminals 4, and the load side connection terminals 3 are formed on figure 1 The surface on ...

Embodiment approach 2

[0057] In this embodiment, except for the form of a part of the unit cover 21 constituting the overcurrent detection and setting unit 7, all other components are the same as those of the overcurrent detection and setting unit 7 and the circuit breaker 100 described in Embodiment 1. have the same structure.

[0058] exist Figure 15 A perspective view of the unit cover 21 used in this embodiment is shown. In addition, in Figure 16 show the Figure 15 A partially enlarged oblique view of the Figure 17 The internal structure of the overcurrent detection setting means 7 of this embodiment is shown. The present embodiment is characterized in that the concave-convex portion 32 is formed on the peripheral convex portion 30 formed around the circular hole 24 of the unit cover 21 .

[0059] In the overcurrent detection setting unit 7 in which the concave-convex portion 32 is formed on the surrounding convex portion 30 of the unit cover 21 , the dial 17 can be prevented from idli...

Embodiment approach 3

[0061] The circuit breaker 100 described in the present embodiment has the same basic structure as the circuit breaker 100 described in the first embodiment. However, the switching mechanism part 5 of the circuit breaker 100 described in the first embodiment has a single-pole single-cut structure that conducts and cuts off current between a set of contacts. The difference of the switching mechanism part 5 of the circuit breaker 100 is that it is a single-pole double-cut structure performed between two sets of contacts.

[0062] Figure 18 Only the contact part of the switching mechanism part 5 of the circuit breaker 100 described in this embodiment is extracted and shown, Figure 18 (a) is the single-pole single-cut contact structure used in Embodiment 1, Figure 18(b) A so-called single-pole double-cut structure that conducts current on / off between two sets of contacts described in this embodiment is used. In the single-pole double-cut structure, a substantially cylindrica...

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PUM

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Abstract

A dial device for a circuit breaker is obtained, which maintains the fitting of the dial and the rotary switch without idling. The dial device (7) of the present invention is characterized in that it has: a rotary switch (18), which is accommodated in the unit case (22); a dial (17), which has a knob portion (25), a wrist portion ( 29) and the fitting part (28), the knob part is cylindrical and arranged on the rotary switch, the wrist-shaped part protrudes in the peripheral direction along the outer peripheral part of the knob part, and one end part is fixed to the knob The outer peripheral part of the part, the other end has a protrusion (26) facing the upper direction, the fitting part is fitted with the rotary switch on the lower surface of the dial; and the unit cover (21), which is connected to the unit case Fitting is performed, and a round hole (24) through which the knob portion of the dial passes is formed, and the unit cover is pressed by the protrusion formed on the wrist portion of the dial.

Description

technical field [0001] The present invention relates to a dial device for setting operating conditions and the like of a tripping device when an overcurrent is detected in an electric circuit, and a circuit breaker provided with the dial device. Background technique [0002] When the circuit breaker detects an overcurrent exceeding the rated current, the trip device operates to open the contacts of the switching mechanism part provided in the circuit breaker main body to cut off the current. Operating conditions for overcurrent, such as the rated current of the switching mechanism and the operating time of the tripping device, are usually set by adjusting a dial device attached to the circuit breaker (for example, refer to Patent Document 1). . [0003] The dial device is composed of a rotary switch and a dial, the rotary switch is mounted on a circuit board, the dial has a cylindrical knob part with a small diameter, a disc-shaped part with a larger diameter than the knob ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/74H02H3/093
CPCH01H71/74H02H3/0935H01H19/28H01H71/08H01H71/58
Inventor 塚本龙幸
Owner MITSUBISHI ELECTRIC CORP