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Door cover lock control circuit

A control circuit and door cover lock technology, which is applied to building locks, non-mechanical drive-operated locks, and other washing machines, etc., can solve the problems of damaged door cover locks, failure to operate, and easy damage, and achieve the effect of enhancing security.

Active Publication Date: 2013-08-14
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing door lock control circuit is simple to use, and it needs to be controlled carefully. If the door lock is not properly controlled, it will be easily damaged. If it is too long, it will damage the door cover lock, which will not only fail to play its due role, but also increase the defect rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the door cover lock control circuit of this embodiment includes: a single chip microcomputer (MCU), a door cover state detection circuit, and a strong current control circuit. The door cover state detection circuit is connected with the door cover lock and the single-chip microcomputer for detecting the state of the door cover. The strong current control circuit is connected with the strong current, the door cover lock and the single-chip microcomputer. Access to the door lock to control the opening or closing of the door.

[0026] Specifically, the heavy current control circuit includes: a relay sub-circuit and a triode control sub-circuit. The relay sub-circuit includes: relay K1, diode D1, resistor R1 and capacitor CX1, the triode control sub-circuit includes: triode N1, resistor R2 and resistor R3, resistor R3 is connected between the base and emitter of triode N1, and the resistor R2 is connected between the base of the transistor N1 an...

Embodiment 2

[0032] The structure of the door cover lock control circuit in this embodiment is basically the same as the circuit structure in Embodiment 1, the difference is that an electrolytic capacitor is connected in series between the strong current control circuit and the microcontroller, that is, the resistor R2 and the output port I / O1 of the MCU The electrolytic capacitor E1 is connected in series. Because the inner coil of the door cover lock is energized for 100 milliseconds, the door cover lock can perform locking and unlocking actions. If the time is too long, the coil will heat up, and if the time is too long, the door lock will be damaged. Therefore, an electrolytic capacitor E1 is connected in series at the outlet of the output port I / O1 of the MCU. When the door lock needs to be opened or closed, the I / O1 port of the MCU needs to output a high level (I / O1=1), and under normal circumstances The time of high level is 100ms (TH=100ms). When the time of high level of I / O1 port...

Embodiment 3

[0035] The door cover lock control circuit structure of this embodiment is basically the same as that of Embodiment 1, the difference is that two roads of strong current control circuits are used in this embodiment, and the structure of each road of strong current control circuit is the same as that of Embodiment 1. The structure of the heavy current control circuit is the same. One end of the relay K1 contact of the first heavy current control circuit is connected to the live wire terminal L, the other end is connected to the input terminal 2 of the rectifier BD1, and R2 in the triode control sub-circuit is connected to the output port I / O1 of the MCU. One end of the relay K1 contact of the second strong current control circuit is connected to the fire wire terminal N, the other end is connected to the input terminal 3 of the rectifier BD1, and R5 in the triode control sub-circuit is connected to the output port I / O2 of the MCU. Due to the addition of a strong current control...

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PUM

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Abstract

The invention discloses a door cover lock control circuit, and relates to the technical field of safety of household electrical appliances. The door cover lock control circuit comprises a single chip microcomputer, at least one door cover state detection circuit and at least one strong-current control circuit. The door cover state detection circuits are used for connecting a door cover lock and the single chip microcomputer and detecting state of a door cover, the strong-current control circuits are used for connecting strong current, the door cover lock and the single chip microcomputer, and the single chip microcomputer is used for triggering the strong-current control circuit to control the strong current to be switched in the door cover lock to control opening and closing of the door cover. By the arrangement, safety of door cover lock control is improved.

Description

technical field [0001] The invention relates to the technical field of household appliance safety, in particular to a door cover lock control circuit. Background technique [0002] At present, more and more people pay more and more attention to the safety of home appliances, and safety standards have been issued accordingly. In the past, the door cover on the pulsator washing machine was not locked and could be opened at any time, which also increased potential safety hazards. [0003] In response to this problem, a door lock is added to the wave-wheel washing machine. After the power is turned on, the door lock is controlled by a single-chip microcomputer. When the washing machine is running, the door lock is locked, and the door lock is opened when the washing machine is finished or paused, avoiding washing or dehydration. The safety factor has been greatly improved in case of accidents caused by opening the cover during the process. [0004] For the control of the door ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06F37/42D06F39/14E05B47/00
Inventor 黄静莉邢汝佳王荣忠
Owner HAIER GRP CORP
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