bypass device

A bypass device and mounting hole technology, applied in transportation and packaging, elevators, elevators in buildings, etc., can solve the problems of affecting the life of the device, limited space, difficult to plug and unplug, etc., and achieve accurate and precise plugging and unplugging. , the effect of increasing the guiding effect
CN106853932BActive Publication Date: 2018-12-25SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI MITSUBISHI ELEVATOR CO LTD
Publication Date
2018-12-25

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Abstract

The invention discloses a bypass device which comprises a box body, a front cover and a handle. A lower-portion printing plate at the bottom of the box body comprises at least one lower-portion plug part, the front cover is buckled and fixed to the box body, the front cover is provided with an installing hole, and the top surface of the front cover is provided with position signs. The handle is similar to the installing hole in peripheral shape. At least one upper-portion plug part is fixed to the bottom surface of the handle, and a bypass sign is arranged on the top surface. When the handle is embedded into the installing hole and the bypass sign corresponds to the different position signs, the upper-portion plug parts on the bottom surface of the handle are oppositely plugged with the lower-portion plug parts of the lower-portion printing plate, and different external route communicating states are formed through different opposite-plugging combinations of the upper-portion plug parts and the lower-portion plug parts. The bypass device is convenient to use, and the plug parts are accurate in opposite plugging and positioning.
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Description

technical field

[0001] The invention relates to a bypass device for an electrical circuit, and the bypass device for bypassing a landing door lock circuit and a car door lock circuit. Background technique

[0002] In electrical circuit design, switching between circuits is usually achieved through bypass devices.

[0003] Take the elevator field as an example: In order to detect the opening and closing of elevator landing doors and car doors, a door lock switch is set on each floor door and car door and connected in series to form a door lock circuit. When any door is opened, the door lock circuit is disconnected, causing the elevator to stop running. The inability of the elevator to run due to damage to the door lock contacts may cause trapped people to fail, and it will also cause difficulties for professionals to overhaul and maintain.

[0004] In December 2014, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of Chin...

Claims

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