CN201703185U

CN201703185U - Wheel burglar alarm of wheel pressure type four-wheeled vehicle

Info

Publication number: CN201703185U
Application number: CN201020208173XU
Authority: CN
Inventors: 马志强; 许润斐; 马俊毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2011-01-12
Anticipated expiration: 2020-05-31

Abstract

A wheel burglar alarm of a wheel pressure type four-wheeled vehicle comprises four pressure devices just the same and an alarm box. Each pressure device comprises an outer cylinder and an inner cylinder. A limit switch is arranged at the bottom of the outer cylinder. The inner cylinder is inserted in the outer cylinder. A spring is arranged in the inner cylinder. A support arm is arranged at the lower end of the outer wall of the inner cylinder. Contacts of the limit switches of the four pressure devices are connected with a power switch, an electric bell and an alarm lamp in the alarm box through lead wires. The position where the wheels of the vehicle are parked as needed by the four pressure devices are embedded on the ground of the parking place. When the four wheels of the vehicle are parked on the pressure devices, the inner cylinders are reduced in height due to heavy pressure and the support arms press the limit switches in a contacting manner so that normally-closed contacts of the limit switches are opened and then the power switch is closed. When any of the wheels is disassembled to be stolen or four wheels depart from the pressure devices at the same time, the inner cylinders go up. At the same time, the normally-closed contacts of the limit switches are reclosed to power on the circuit so that the electrical bell and the alarm lamp in the alarm box send acousto-optic alarm signals.

Description

Wheel pressure type four-wheel automobile wheel burglar alarm

Affiliated technical field:

The utility model relates to a kind of four-wheel automobile wheel antitheft alarm system, especially can be disassembled at wheel and send the sound and light alarm signal after stealing, and belongs to the automobile anti-theft alarm technical field.

Background technology:

At present, be parked in the wheel that outdoor vehicle, particularly night are parked in outdoor vehicle, the situation about stealing that is removed happens occasionally.People have installed various wired, wireless burglar alarms onboard, though these annunciators have played certain anti-theft alarm effect, but these are antitheft applies to install to put to exist trouble is installed, and very easily stolen again person destroys and carries out electro countermeasure and malfunctioning deficiency.

Summary of the invention:

In order to overcome the deficiency that existing antitheft alarm system exists, the utility model provides a kind of pressure type four-wheel automobile wheel burglar alarm of taking turns, four pressure apparatus of this annunciator are embedded in respectively in the ground, below of four wheel positions at vehicle parking place, four wheels of automobile stop respectively to be pressed on four pressure apparatus, once any one wheel leaves pressure apparatus, annunciator will send acousto-optic and report to the police.

The technical scheme that its technical matters that solves the utility model adopts is:

The pressure apparatus of annunciator is duplicate by four, and diameter 400mm, a high 200mm have the steel circular outer cylinder of end uncovered and diameter 340mm, a high 200mm to have the steel circular inner tube at the no end of lid to constitute.

The urceolus inner top side is dustproof, the waterproof grommet of the annular of wide, a thick 30mm of being, and outer tube bottom is equipped with a travel switch with a pair of normally closed contact, is connected to the lead of drawing on the contact of travel switch to warning box; Inside drum cover upwards inserts in the urceolus, in the cavity of inner core spring is housed, the upper end of spring withstand on inner core on cover, the lower end of spring is against on the going to the bottom in the urceolus, under the effect of spring, when not having exterior pressure, the caping of inner core exceeds urceolus upper edge 20mm, and a support arm is housed on the outer wall of inner core lower end; When cap surface on the inner core is subjected to 200KG or the pressure more than the 200KG, spring in the inner core cavity is compressed, the inner core height descends, when the inner core caping drops to the urceolus upper edge at a horizontal surface, the lower edge of inner core has been pushed up the bottom of urceolus simultaneously, and the height of inner core no longer reduces, in the process that the inner core height descends, the support arm that is installed on the outer wall of inner core lower end has pressed the travel switch that is installed in outer tube bottom simultaneously, and makes its contact action.

Be connected in the warning box that has power supply, source switch, intermediate relay, warning electric bell and alarm lamp after the normally closed contact parallel connection of lead with four pressure apparatus travel switches.

In the circuit in warning box, the input power supply is an alternating current 220V, source switch plays power supply in cut-out and the switch on, the a pair of normal opened contact of the normally closed contact of four travel switches and intermediate relay is connected in parallel on circuit, intermediate relay, warning electric bell, alarm lamp are connected in the circuit through the normally closed contact of four travel switches and the normal opened contact of intermediate relay.

Four duplicate pressure apparatus respectively by four wheel bit positions that parked cars, are embedded on the ground at parking stall place, make the upper edge of urceolus become level with ground.When the vehicle start-stop is to four pressure apparatus that are embedded in parking stall, four pressure wheels are on the inner core of 20mm above ground level, the height of inner core is dropped to ground to be in a horizontal position, in the process that inner core descends, the support arm that is installed on the outer wall of inner core lower end has pressed travel switch, and the normally closed contact of travel switch is opened.The power turn-on switch has circuit immediately, at this moment, any one wheel of vehicle is split to be got off to steal or four wheels leave pressure apparatus simultaneously, inner core on the pressure apparatus all can raise owing to losing weight, and in the process that raises, the support arm that presses on the inner core lower end outer wall on the travel switch will lift, the normally closed contact of travel switch is closed again, circuit is connected, intermediate relay, the warning electric bell, alarm lamp gets, the normal opened contact closure of intermediate relay, the warning electric bell sends the alarm sound signal, alarm lamp sends bright signal and reports to the police simultaneously.At this moment, the reinstatement even if inner core is under pressure is again opened the normally closed contact of travel switch, because the self-sustaining of intermediate relay normal opened contact closure is arranged, circuit is still connected, and sound and light alarm can not stop yet.As removing sound and light alarm, only need manual power cutoff switch to get final product.

The beneficial effects of the utility model are:

Need not on automobile to install any equipment and device, just can be removed to steal and leave off-position with automobile and send the sound and light alarm signal wheel.This annunciator is easy to use, safety, reliable.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is: the utility model pressure apparatus is embedded into the scheme drawing of position, connecting wire and warning box;

Fig. 2 is: the generalized section of pressure apparatus during no external pressure:

Fig. 3 is: the generalized section of pressure apparatus when the inner core caping is under pressure:

Fig. 4 is: circuit diagram of the present utility model.

Among the figure: 1. pressure apparatus, 2. urceolus, 3. inner core, 4. lead, 5. warning box, 6. source switch, 7. warning electric bell, 8. alarm lamp, 9. bottom, 10. lower edge, 11. seal rings, 12. the upper edge, 13.20mm, 14. caping, 15. spring, 16. support arms, 17. travel switches, 18. normally closed contact, 19. intermediate relays, 20. normal opened contacts.

The specific embodiment:

In the drawings, four duplicate pressure apparatus 1 are embedded in underground by four wheel bit positions at the vehicle parking place, and lead 4 connects the normally closed contact 18 of travel switch 17 in four pressure apparatus 1 on source switch 6, warning electric bell 7 and the alarm lamp 8 that causes in the warning box 5.At this moment, source switch 6 is in scram position, is not subjected to external pressure on the pressure apparatus 1, and inner core 3 top covers 14 exceed urceolus 2 upper edges 12,20mm13.

When wheel is parked on the pressure apparatus 1, cap surface is subjected to the above pressure of 200KG on the inner core 3, spring 15 compressions in inner core 3 cavitys, inner core 3 highly descends, when inner core 3 caping 14 drop to urceolus 2 upper edges 12 at a horizontal surface, the lower edge 10 of inner core 3 has been pushed up the bottom 9 of urceolus 2 simultaneously, and the height of inner core 3 no longer reduces.In the decline process of inner core 3, support arm 16 has pressed travel switch 17, and its normally closed contact 18 is opened.

The power turn-on switch 6 subsequently, at this moment, being pressed in any one wheel on four pressure apparatus 1 is removed and steals or four wheels leave pressure apparatus 1 simultaneously, inner core 3 will raise because losing weight, support arm 16 will discharge pressing travel switch 17, the normally closed contact 18 of travel switch 17 is closed again, circuit is connected, intermediate relay 19, warning electric bell 7, alarm lamp 8 get, normal opened contact 20 closures of intermediate relay 19, warning electric bell 7 and alarm lamp 8 send the sound and light alarm signal simultaneously.At this moment, the reinstatement even if inner core 3 is under pressure is again opened the normal opened contact 18 of travel switch 17, because the closed self-sustaining of the normal opened contact 20 of intermediate relay 19 is still switched on circuit, sound and light alarm can not stop yet.As removing sound and light alarm, only need manual power cutoff switch 6 to get final product.

Claims

1. a wheel pressure type four-wheel automobile wheel burglar alarm is made of four duplicate pressure apparatus and warning boxs that have inner core and urceolus, has lead to connect between four pressure apparatus and the warning box, and it is characterized in that: inner core is inserted in the middle of the urceolus.

2. the pressure type four-wheel automobile wheel burglar alarm of taking turns according to claim 1 is characterized in that: in the cavity of inner core spring is housed.

3. the pressure type four-wheel automobile wheel burglar alarm of taking turns according to claim 1 is characterized in that: on the outer wall of inner core lower end support arm is housed.

4. the pressure type four-wheel automobile wheel burglar alarm of taking turns according to claim 1, it is characterized in that: outer tube bottom is equipped with travel switch.