CN202082027U

CN202082027U - Automobile protection circuit for preventing repeatedly starting

Info

Publication number: CN202082027U
Application number: CN201120126198XU
Authority: CN
Inventors: 龚文资
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2011-12-21
Anticipated expiration: 2021-04-26

Abstract

The utility model relates to an automobile protection circuit for preventing repeatedly starting which comprises a storage battery P, an ignition switch S, a starting relay Ko, a protection relay Kc, an engine E and a starter M, wherein one end of an input loop of the starting relay Ko is connected to a starting gear ST of the ignition switch S, while the other end of the input loop is grounded; an output loop of the starting relay Ko is serially connected to a power supply of the starter M; one end of an input loop of the protection relay Kc is connected to a neutral point N of the engine E, while the other end of the input loop is grounded; and an output loop of the protection relay Kc is serially connected to the power supply of the starter M. Compared with the prior art, the automobile protection circuit provided with the protection circuit of the starter has the advantages that the impact of an engine flywheel gear and a starter flywheel gear under a condition of a bigger speed difference is avoided, and the starter is protected against possible damage.

Description

A kind of automobile protective circuit that prevents re-lighting

Technical field

The utility model relates to a kind of automobile circuit, particularly a kind of automobile protective circuit that prevents re-lighting.

Background technique

At present, the starting of motor car engine need be driven by starter motor, and the rotating speed in starter motor when work is 150-200 r/min, and the rotating speed after the engine start success is generally greater than 600 r/min, the bigger speed discrepancy of both existence this moment.In the prior art,,, in time do not disconnect ignition switch if after the engine start success owing to lack relevant protective gear; Or normal working of engine mistiming connection ignition switch, all can cause the impact under the big situation of speed discrepancy of engine flywheel tooth and starter flywheel tooth, cause the damage of starter motor easily.

The model utility content

The technical problems to be solved in the utility model is to overcome the defective that existing re-lighting damages starter motor easily, has proposed a kind of automobile protective circuit that prevents re-lighting.

In order to solve the problems of the technologies described above, the utility model provides following technological scheme:

A kind of automobile protective circuit that prevents re-lighting comprises storage battery P, ignition switch S, starter relay Ko, protective relay Kc, generator E, starter motor M; The input circuit of described starter relay Ko, an end is connected the other end ground connection with the starting retaining ST of ignition switch S; The output loop of described starter relay Ko is connected with the power supply of starter motor M; The input circuit of described protective relay Kc, an end is connected the other end ground connection with the neutral point N of generator E; The output loop of described protective relay Kc is connected with the power supply of starter motor M.

Further, described protective relay Kc is a normally closed relay.

Further, in the described vehicle starting circuit, be provided with dynamo governor Rg, the power end of described dynamo governor Rg is connected with the igniting retaining IG of ignition switch S, and the magnetic field end is connected with the magnetic field end F of generator E.

Working principle is:

Static or when being in the starting process when motor, the voltage that the neutral point N of the generator E that is driven by motor does not export or exports is lower, the input circuit of the protective relay Kc that is connected with neutral point N is obstructed, thereby output loop closure, be allocated to starting retaining ST with ignition switch S this moment, and starter motor M can proper functioning; When normal working of engine; the enough voltage of neutral point N output of the generator E that drives by motor, the input circuit conducting of the protective relay Kc that is connected with neutral point N, thereby output loop disconnects; be allocated to starting retaining ST with ignition switch S this moment, and starter motor M can not work.

Than prior art, the utility model has been avoided the impact under the big situation of speed discrepancy of engine flywheel tooth and starter flywheel tooth by the protective circuit of starter motor is set, and the protection starter motor avoids possible damage.

Description of drawings

Accompanying drawing is used to provide further understanding of the present utility model, and constitutes the part of specification, is used from explanation the utility model with embodiment one of the present utility model, does not constitute restriction of the present utility model.In the accompanying drawing:

Fig. 1 is the utility model embodiment's a circuit diagram.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in qualification the utility model.

Embodiment 1

A kind of automobile protective circuit that prevents re-lighting comprises storage battery P, ignition switch S, starter relay Ko, protective relay Kc, generator E, dynamo governor Rg, starter motor M; The input circuit of starter relay Ko, an end is connected the other end ground connection with the starting retaining ST of ignition switch S; The output loop of starter relay Ko is connected with the power supply of starter motor M; The input circuit of protective relay Kc, an end is connected the other end ground connection with the neutral point N of generator E; The output loop of protective relay Kc is connected with the power supply of starter motor M.Protective relay Kc is a normally closed relay.In the vehicle starting circuit, be provided with dynamo governor Rg, the power end of dynamo governor Rg is connected with the igniting retaining IG of ignition switch S, and the magnetic field end is connected with the magnetic field end F of generator E.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although the utility model is had been described in detail with reference to previous embodiment, for a person skilled in the art, it still can be made amendment to the technological scheme that aforementioned each embodiment put down in writing, and perhaps part technical characteristics wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. an automobile protective circuit that prevents re-lighting is characterized in that, comprises storage battery P, ignition switch S, starter relay Ko, protective relay Kc, generator E, starter motor M; The input circuit of described starter relay Ko, an end is connected the other end ground connection with the starting retaining ST of ignition switch S; The output loop of described starter relay Ko is connected with the power supply of starter motor M; The input circuit of described protective relay Kc, an end is connected the other end ground connection with the neutral point N of generator E; The output loop of described protective relay Kc is connected with the power supply of starter motor M.

2. the automobile protective circuit that prevents re-lighting according to claim 1 is characterized in that described protective relay is a normally closed relay.

3. the automobile protective circuit that prevents re-lighting according to claim 1 is characterized in that, also comprises dynamo governor Rg; The power end of described dynamo governor Rg is connected with the igniting retaining IG of ignition switch S, and the magnetic field end is connected with the magnetic field end F of generator E.