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New Button Locking Subassembly on ACB

IP.com Disclosure Number: IPCOM000181561D
Original Publication Date: 2009-Apr-27
Included in the Prior Art Database: 2009-Apr-27
Document File: 3 page(s) / 680K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Air Circuit Breakers (ACB) are manually operated by two buttons on the front side of the device. One button is for opening and one for closing the switch. To protect these buttons against unauthorized or unintended operation, a mechanically working locking system is necessary. Such locking assemblies have to fulfill some function requirements, e.g., the ability to lock one particular button as well as both at one time.

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New Button Locking Subassembly on ACB

Idea: Zaixi Zhang, CN-Suzhou; Dan Zhao, CN-Suzhou

Air Circuit Breakers (ACB) are manually operated by two buttons on the front side o

button is for opening and one for closing the switch. To protect these buttons against una

unintended operation, a mechanically working locking system is necessary. Such locking a

have to fulfill some function requirements, e.g., the ability to lock one particular butt

at one time.

Until now there are many solutions realized differently. The main mechanism works

separate flaps which cover the buttons individually. These flaps can additionally b

(Figure 1 and 2). In the following, a

two-tier cover (Figure 3). The movement of that mechanism is depicted in Figu

can be folded together in such a way that optiona

mechanism is more simple and functional.

f the device. One

uthorized or

ssemblies

on as well as both

by using two

e saved by a D-lock

novel locking assembly is described which works by using a sliding mechanism of a

re 4. The mechanism

lly one of the buttons is covered. In the unfolded

position, both buttons are covered For the protection of any possible locking position, a D-lock can be

applied (Figure 5 to 7).

The advantage of the proposed locking assembly is that it consists of three main parts only. The

Figure 1: Current solution of a locking assembly for an air circui...