CN2829172Y

CN2829172Y - Vehicle power supply protection device

Info

Publication number: CN2829172Y
Application number: CN 200520014428
Authority: CN
Inventors: 应云平
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-29
Filing date: 2005-08-29
Publication date: 2006-10-18
Anticipated expiration: 2015-08-29

Abstract

The utility model provides a vehicle power source protection device which belongs to the field of protective devices. The utility model overcomes the defects of unstable power supply for the existing vehicle power source protection device, one use and high safety hidden dangers, and the use of the utility model is influenced by environment. The vehicle power source protection device is arranged between a vehicle power source and a vehicle load, and the utility model comprises two gold sheets which are in connection in series, a current limiting coil, a movable contact head and a fixed contact head, wherein a mechanical control structure which can make the movable contact head moved when the shapes of the two gold sheets are changed is arranged between the two gold sheets and the movable contact head; a movable core is arranged in the current limiting coil; a mechanical linking structure which makes the core and the movable contact head linked is arranged between the core and the movable contact head. The vehicle power source protection device has the advantages of simple circuit structure, high safety performance, good operating stability, high sensibility, automatic circuit supervision, small external disturbance and long service life.

Description

Power supply safety device of vehicle

Technical field

The utility model relates to the protector field, especially relates to a kind of power supply safety device of vehicle that is used to protect automobile main circuit overload and short circuit.

Background technology

Under abnormal conditions such as overload, short circuit, high pressure, under-voltage, high temperature, will produce wild effect during the power work of automobile.For it is played a protective role, the general safety plate that adopts is as the power protection facility on the car battery power supply circuit.

For example, Chinese patent literature disclose a kind of automobile power source with protective device (application number: 00252356), include: a Plug Division, this Plug Division front end can insert the automobile smoking base, the rear end has a frame and meets portion, has several slots and positive and negative and power supply contact pin and frame connects portion inside; One sheet lock type fuse, this fuse can insert in the slot of one of aforementioned Plug Division, and power protection is provided; One extension, front end have and meet portion with frame and connect piece to being referred to as frame, and frame connects piece and all have slotted eye, the power supply after the conducting of Plug Division can be drawn by the rear end line stretcher, provide the power supply that uses electrical appliance in the car to use, and can safeguard the fail safe of electrical appliance.

But,, can not use repeatedly because become flexible easily safety plate and Insurance Block joint, power supply instability and sealing property are relatively poor.During car steering, when the rainy day, road muddy water splashed, just cause safety plate and Insurance Block loose contact easily, vehicle power supply outage phenomenon occurs through regular meeting.In order to guarantee the power supply normal power supply, people will artificially reequip circuit when outage, or directly power line are linked to each other with power consumption equipment.Even also have many manufacturers in order to guarantee the power supply normal power supply, when dispatching from the factory, just power line is directly linked to each other with power consumption equipment.Though aforesaid way can guarantee continued power to a certain extent, but exists great potential safety hazard.Vehicle power supply is easy to cause heavy-current discharge, short circuit phenomenon occurs, not only can damage power lead and power consumption equipment, even can cause self-burning of vehicle.

Summary of the invention

The purpose of this utility model is at the problems referred to above, provide a kind of reasonable in design, line construction is simple, security performance is high, good operating stability, the power supply safety device of vehicle that can in time cut off the electricity supply automatically when circuit instability or heavy-current discharge occurring; It is comparatively complicated to have solved the existing in prior technology structure, poor safety performance, the technical problem that job stability is not high.

Another purpose of the present utility model is at the problems referred to above, the power supply safety device of vehicle that provide a kind of good airproof performance, be subjected to that external interference is little, cost of manufacture is cheap, can use repeatedly; It is poor to have solved the existing in prior technology sealing, just causes safety plate and Insurance Block loose contact, power supply instability, cost of manufacture height easily when the rainy day, road muddy water splashed, the technical problem that can't use repeatedly etc.

For achieving the above object, the utility model has adopted following technical proposal: this power supply safety device of vehicle, be arranged between automobile power source and the automobile-used load, it is characterized in that, it comprises two gold plaques of being cascaded, current-limiting inductor, movable contact head and fixing contact head; Be provided with a mechanical type control structure that when two gold plaque deformation, movable contact head is moved between two gold plaques and the movable contact head, a movable fuse is arranged in current-limiting inductor, between fuse and movable contact head, be provided with a mechanical serial verb construction that makes both interlocks.

The utility model creatively adopt a movable contact head and fixedly contact head be used for the disconnection of control circuit and unimpeded, because circuit is under the situation of overcurrent work, two gold plaques can produce the time-delay bending owing to be heated, thereby cause movable contact head and fixing separating of contact head, disconnect power supply circuits.Produce in circuit under the situation of big electric current, current-limiting inductor produces attraction, and attraction activity fuse disconnects movable contact head and fixing contact head by being arranged on mechanical serial verb construction moment between fuse and the movable contact head, stops the power supply power supply.

In order further to improve circuit, in above-mentioned power supply safety device of vehicle, also be parallel with auxiliary bypass at the two ends of above-mentioned series circuit, be connected with the crystal diode circuit in the described auxiliary bypass.

In above-mentioned power supply safety device of vehicle, also be in series with a safety fuse on the above-mentioned series circuit.

In above-mentioned power supply safety device of vehicle, also be in series with one from the recovery and protection device in the above-mentioned auxiliary bypass.

In above-mentioned power supply safety device of vehicle, described mechanical type control structure comprises the turn knob that body, middle part and body are hinged, movable contact head is hinged by rotation axis and body, a spring housing is connected on the rotation axis, the two ends of spring act on respectively on body and the movable contact head, movable contact head is contacted with fixing contact head, one end of movable contact head can lean on mutually with an end of turn knob, can promote two gold plaques that turn knob is rotated when being provided with in deformation near the other end of turn knob.

Utilize this mechanical type control structure, make when two gold plaque generation deformation, drive movable contact head, make fixedly contact head of movable contact head disengaging by turn knob.

In above-mentioned power supply safety device of vehicle, the fuse end of described current-limiting inductor is located in the hole of movable contact head one end, is provided with the plush copper greater than the aperture on the top of fuse.In fuse retraction, plush copper fastens movable contact head one end, and it is separated with fixing contact head.

In above-mentioned power supply safety device of vehicle, be fixed with a contact on the described fixedly contact head, be provided with the contact that can contact at an end of movable contact head with contact.

, waterproof effect dustproof in order to play, in above-mentioned power supply safety device of vehicle, described body is a housing, and each part is loaded in the housing in described series circuit and the auxiliary bypass, and two links of series circuit link to each other with automobile-used load with automobile power source respectively.The structure of sealing can reduce extraneous interference effectively, and the product of safety device is processed and use is all very convenient.

Compared with prior art, the advantage of this power supply safety device of vehicle is:

1, circuit structure is simple, the security performance height, and good operating stability, sensitivity is higher, can finish circuit supervision automatically;

2, when the circuit overcurrent occurring, two gold plaques produce the time-delay bending owing to be heated, and can in time cut off the electricity supply automatically;

3, when instantaneous large-current occurring, current-limiting inductor produces attraction, and attraction activity fuse can disconnect movable contact head and fixing contact head moment, stops the power supply power supply;

4, Zheng Ti good airproof performance is subjected to external interference little, and cost of manufacture is cheap, and can use repeatedly, long service life, and kwh loss is little.

Description of drawings

Fig. 1 is the circuit structure diagram of the power supply safety device of vehicle that provides of the utility model.

Fig. 2 is the power supply safety device of vehicle structural representation that the utility model provides.

Among the figure, two gold plaques 1, current-limiting inductor 2, movable contact head 3, fixedly contact head 4, fuse 5, auxiliary bypass 6, crystal diode circuit 7, safety fuse 8, from recovery and protection device 9, turn knob 10, spring 11, rotation axis 12, hole 13, plush copper 14, contact 15, contact 16, link 17.

Embodiment

As shown in Figure 1, this power supply safety device of vehicle is arranged between automobile power source and the automobile-used load.It is overall package in the housing of a sealing, and link to each other with automobile-used load with automobile power source respectively by two links 17 of above-mentioned series circuit.Shell adopts the cryophylactic APS plastics of flame-resistant high-temperature-resistant casting to form, and adopts high strength after assembling is finished, and the fluid sealant of high-and low-temperature resistance seals, to reach high performance water proof and dust proof effect.

Protective circuit comprises two gold plaques 1 of being cascaded, current-limiting inductor 2, movable contact head 3 and fixing contact head 4.Be provided with a mechanical type control structure that when two gold plaque 1 deformation, movable contact head 3 is moved between two gold plaques 1 and the movable contact head 3, a movable fuse 5 is arranged in current-limiting inductor 2, between fuse 5 and movable contact head 3, be provided with a mechanical serial verb construction that makes both interlocks.Also be parallel with auxiliary bypass 6 at the two ends of series circuit, be connected with crystal diode circuit 7 in the described auxiliary bypass 6.Also be in series with a safety fuse 8 on the above-mentioned series circuit successively.Also be in series with one from recovery and protection device 9 in the above-mentioned auxiliary bypass 6.

As shown in Figure 2, mechanical type control structure comprises body, the turn knob 10 that middle part and body are hinged, movable contact head 3 is hinged by rotation axis 12 and body, a spring 11 is socketed on the rotation axis 12, the two ends of spring 11 act on respectively on body and the movable contact head 3, and movable contact head 3 is contacted with fixing contact head 4.One end of movable contact head 3 can lean on mutually with an end of turn knob 10, can promote two gold plaques 1 that turn knob 10 is rotated when being provided with in deformation near the other end of turn knob 10.Under the situation of circuit overcurrent work, it is crooked that two gold plaques 1 owing to be heated can produce time-delay, thereby cause movable contact head 3 and fixing separating of contact head 4, disconnects power supply circuits.

The fuse 5 of current-limiting inductor 2 and the mechanical serial verb construction between the movable contact head 3 are such: fuse 5 ends are located in the hole 13 of movable contact head 3 one ends, are provided with the plush copper 14 greater than the aperture on the top of fuse 5.Therefore, by the translation of fuse 5, can drive movable contact head 3 actions.Fixedly be fixed with a contact 15 on the contact head 4, be provided with the contact 16 that can contact with contact 15 at an end of movable contact head 3.Produce in circuit under the situation of big electric current, current-limiting inductor 2 produces attractions, and attraction activity fuse 5 disconnects movable contact head 3 and fixing contact head 4 by above-mentioned mechanical serial verb construction moment, stops the power supply power supply.

After fixing a breakdown, can be so that dead circuit resets, so that reuse this device.

Although this paper used morely two gold plaques 1, current-limiting inductor 2, movable contact head 3, fixedly contact head 4, fuse 5, auxiliary bypass 6, crystal diode circuit 7, safety fuse 8, from terms such as recovery and protection device 9, turn knob 10, spring 11, rotation axis 12, hole 13, plush copper 14, contact 15, contact 16, links 17, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1, a kind of power supply safety device of vehicle is arranged between automobile power source and the automobile-used load, it is characterized in that, it comprises two gold plaques (1) of being cascaded, current-limiting inductor (2), movable contact head (3) and fixing contact head (4); Be provided with a mechanical type control structure that when two gold plaque (1) deformation, movable contact head (3) is moved between two gold plaques (1) and the movable contact head (3), a movable fuse (5) is arranged in current-limiting inductor (2), between fuse (5) and movable contact head (3), be provided with a mechanical serial verb construction that makes both interlocks.

2, power supply safety device of vehicle according to claim 1 is characterized in that, the two ends of described series circuit also are parallel with auxiliary bypass (6), is connected with crystal diode circuit (7) in the described auxiliary bypass (6).

3, power supply safety device of vehicle according to claim 1 is characterized in that, also is in series with a safety fuse (8) on the described series circuit.

4, power supply safety device of vehicle according to claim 2 is characterized in that, also is in series with one in the described auxiliary bypass (6) from recovery and protection device (9).

5, according to claim 1 or 2 or 3 or 4 described power supply safety device of vehicle, it is characterized in that, described mechanical type control structure comprises body, the turn knob (10) that middle part and body are hinged, movable contact head (3) is hinged by rotation axis (12) and body, a spring (11) is socketed on the rotation axis (12), the two ends of spring (11) act on respectively on body and the movable contact head (3), movable contact head (3) is contacted with fixing contact head (4), one end of movable contact head (3) can lean on mutually with an end of turn knob (10), can promote two gold plaques (1) that turn knob (10) is rotated when being provided with in deformation near the other end of turn knob (10).

6, according to claim 1 or 2 or 3 or 4 described power supply safety device of vehicle, it is characterized in that, fuse (5) end of described current-limiting inductor (2) is located in the hole (13) of movable contact head (3) one ends, is provided with the plush copper (14) greater than the aperture on the top of fuse (5).

7, power supply safety device of vehicle according to claim 6 is characterized in that, is fixed with a contact (15) on the described fixedly contact head (4), is provided with the contact (16) that can contact with contact (15) at an end of movable contact head (3).

8, according to claim 1 or 2 or 3 or 4 described power supply safety device of vehicle, it is characterized in that, described body is a housing, each part is loaded in the housing in described series circuit and the auxiliary bypass (6), and two links (17) of series circuit link to each other with automobile-used load with automobile power source respectively.