A device for coping with emergency power-off after automobile collision

Abstract

The utility model relates to the field of automobile safety technology, and specifically discloses a device for emergency power-off after automobile collision, the DC+ of time relay connects the positive pole of automobile central air bag sensor assembly power supply, the DC of time relay connects the negative pole of total power-off switch, the trigger signal S+ of time relay connects the control input end of automobile air bag inflator, the trigger signal S of time relay connects the control output end of automobile air bag inflator, the common end of time relay connects DC+, and the normally open contact of time relay connects total power-off switch, total power-off switch connects total power supply, the device of the utility model can cut off total power supply in time when the air bag triggers during automobile collision, effectively avoids the fire and other dangers caused by the short circuit of circuit after collision, the continuous oil sending of oil tank oil pump after the engine oil pipe is broken and the like, and greatly improves the safety after automobile collision.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety technology, specifically to a device for emergency power cut-off after a car collision. Background Technology

[0002] During a collision, a car may experience a short circuit. Especially if the collision ruptures the engine fuel line, the fuel pump continuing to supply fuel can easily cause a fire or other more serious hazards. To ensure safety after the airbags deploy following a collision, a device is needed to promptly cut off the main power supply after the collision, preventing electrical problems from exacerbating the accident.

[0003] Therefore, a device to handle emergency power cut-off after a car collision has become an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a device for emergency power cut-off after a car collision, which can cut off the main power supply of the car in time when a car collision occurs and the airbag is deployed, so as to prevent more serious dangers caused by short circuits and other problems.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a device for emergency power cut-off after a car collision, including a time relay and a main power cut-off switch;

[0006] The DC+ terminal of the time relay is connected to the positive terminal of the power supply of the vehicle's central airbag sensor assembly, and the DC- terminal of the time relay is connected to the negative terminal of the main power-off switch.

[0007] The trigger signal S+ of the time relay is connected to the control input terminal of the car airbag inflator, and the trigger signal S- of the time relay is connected to the control output terminal of the car airbag inflator.

[0008] The common terminal of the time relay is connected to DC+, and the normally open contact of the time relay is connected to the main power-off switch.

[0009] The main power-off switch is connected to the main power supply;

[0010] When the car airbag inflator is triggered, the trigger signal S+ and trigger signal S- are transmitted to the time relay. After a delay, the normally open contact is triggered to close, the main power-off switch coil is energized, and the main power supply is disconnected through the electromagnetic slider inside.

[0011] Furthermore, the control input terminals of the two airbag inflators on the vehicle are connected in parallel to the trigger signal S+ of the time relay, and the control output terminals of the two airbag inflators on the vehicle are connected in parallel to the trigger signal S- of the time relay.

[0012] Furthermore, the total power supply is a 12V DC power supply.

[0013] The advantages of this invention compared to the prior art are as follows: When a car collision occurs and the airbag is triggered, the device of this invention can cut off the main power supply in time, effectively avoiding the dangers of fire caused by short circuits after the collision and the continuous fuel pump supplying fuel after the engine oil pipe is broken, thus greatly improving the safety of the car after a collision. Attached Figure Description

[0014] Figure 1 This is a circuit connection diagram of a device for emergency power cut-off after a car collision, according to this utility model.

[0015] As shown in the figure: 1. Time relay, 2. Main power switch, 3. DC+, 4. DC-, 5. Trigger signal S+, 6. Trigger signal S-, 7. Common terminal, 8. Normally open contact, 9. Main power supply. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] The following is a detailed description of a device for emergency power cut-off after a car collision, in conjunction with the accompanying drawings.

[0019] Combined with appendix Figure 1 The specific implementation process of this utility model's device for emergency power cut-off after a car collision is as follows:

[0020] A device for emergency power cut-off after a car collision includes a time relay 1 and a main power cut-off switch 2.

[0021] DC+3 of time relay 1 is connected to the positive power supply of the central airbag sensor assembly of the car, and DC-4 of time relay 1 is connected to the negative power supply of the main power switch 2; the trigger signal S+5 of time relay 1 is connected to the control input terminal of the car airbag inflator, and the trigger signal S-6 of time relay 1 is connected to the control output terminal of the car airbag inflator; the common terminal 7 of time relay 1 is connected to DC+3, and the normally open contact 8 of time relay 1 is connected to the main power switch 2.

[0022] The main power switch 2 is connected to the main power supply 9, which is a 12V DC power supply.

[0023] When a car collision occurs and the airbag inflator is triggered, the trigger signal S+5 and trigger signal S-6 are transmitted to the time relay 1. After a delay (about 1 second), the normally open contact 8 is triggered to close, the coil of the main power switch 2 is energized, and the main power supply 9 is disconnected through the electromagnetic slider inside.

[0024] In addition, the control input terminals of the two airbag inflators on the car are connected in parallel to the trigger signal S+5 of the time relay 1, and the control output terminals of the two airbag inflators on the car are connected in parallel to the trigger signal S-6 of the time relay 1. This ensures that when any airbag inflator is triggered, it can transmit a signal to the time relay 1, thus guaranteeing the reliability of the overall power-off operation.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for emergency power cut-off after a car collision, characterized in that: Including time relays and main power-off switches; The DC+ terminal of the time relay is connected to the positive terminal of the power supply of the vehicle's central airbag sensor assembly, and the DC- terminal of the time relay is connected to the negative terminal of the main power-off switch. The trigger signal S+ of the time relay is connected to the control input terminal of the car airbag inflator, and the trigger signal S- of the time relay is connected to the control output terminal of the car airbag inflator. The common terminal of the time relay is connected to DC+, and the normally open contact of the time relay is connected to the main power-off switch. The main power-off switch is connected to the main power supply; When the car airbag inflator is triggered, the trigger signal S+ and trigger signal S- are transmitted to the time relay. After a delay, the normally open contact is triggered to close, the main power-off switch coil is energized, and the main power supply is disconnected through the electromagnetic slider inside.

2. The device for emergency power cut-off after a car collision according to claim 1, characterized in that: The control input terminals of the two airbag inflators on the vehicle are connected in parallel to the trigger signal S+ of the time relay, and the control output terminals of the two airbag inflators on the vehicle are connected in parallel to the trigger signal S- of the time relay.

3. The device for emergency power cut-off after a car collision according to claim 2, characterized in that: The total power supply is a 12V DC power supply.

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