Safety control circuit of baby carriage pedal switch

A foot switch and safety control technology, which is applied to children's bicycles, bicycles, motor vehicles, etc., can solve the problem of foot switch being blown out, and achieve the effect of avoiding blowout, simplifying the baby carriage circuit, and avoiding frequent blowout

Inactive Publication Date: 2017-06-06
ZHEJIANG JIAJIA RIDE ON
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing baby carriage, when the foot switch is disconnected, the motor is short-circuited by the foot switch. Due to the back electromotive force of the motor, there is still a current flowing through the foot switch at the moment of disconnection. The current intensity is about 40A. The rated current is 30A, so at the moment when the foot switch is lifted, the current passing through the foot switch exceeds its rated current, and occasionally the foot switch is fused

Method used

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  • Safety control circuit of baby carriage pedal switch

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Embodiment Construction

[0009] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0010] see figure 1 , in the embodiment of the present invention, a safety control circuit of a baby carriage pedal switch is realized by a 5-pin relay. Negative pole, the normally closed switch is connected to the positive and negative poles of the motor. When the control circuit is closed, the normally closed switch is opened, the normally open switch is closed, and the circuit is connected. When the control circuit is disconnected, the normally open switch is opened, and the circuit is disconnected. Close the switch to connect the motor circuit; connect the positive and negative poles of the motor through a 4-pin relay. The 4-pin relay contains a normally closed switch. When the control switch is turned off, the positive and negative poles of the motor are shorted. Both th...

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Abstract

The invention discloses a safety control circuit of baby carriage pedal switch. A five-pin relay achieves on-off of a circuit. The five-pin relay comprises a normally closed switch and a normally open switch. The normally open switch is connected with a positive pole and a negative pole of a circuit. The normally closed switch is connected with the positive pole and the negative pole of a motor. When the control circuit is closed, the normally closed switch is on and the normally open switch is off, and the circuit is conducted. When the control circuit is opened, the normally open switch is on and the circuit is closed and the normally closed switch is off, and the circuit of the motor is conducted. A four-pin relay links the positive pole of the motor with the negative pole of the motor. The four-pin relay comprises a normally closed switch. When the control switch is off, the positive pole of the motor and the negative pole of the motor are in short circuit. The safety control circuit avoids the fusing caused by excessive current in the switch. With the relays, high current is controlled by low current and the switch and an operating circuit are put in different circuits, so the current in the switch is low. The fusing caused by the current in the switch in the operating circuit over rated current is avoided.

Description

technical field [0001] The invention relates to a control circuit, in particular to a safety control circuit for a baby carriage pedal switch. Background technique [0002] In the existing baby carriage, when the foot switch is disconnected, the motor is short-circuited by the foot switch. Due to the back electromotive force of the motor, there is still a current flowing through the foot switch at the moment of disconnection. The current intensity is about 40A. The rated current is 30A, so at the moment when the foot switch is lifted, the current passing through the foot switch exceeds its rated current, and occasionally the foot switch is fused. Contents of the invention [0003] The object of the present invention is to provide a safety control circuit for a baby carriage foot switch to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K9/00B60L3/00
CPCB62K9/00B60L3/00
Inventor 叶小涛吴厚斌
Owner ZHEJIANG JIAJIA RIDE ON
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