CN2496690Y - Motor vehicle tyre air-leakage alarm - Google Patents

Abstract

The utility model relates to a motor vehicle tyre air leakage alarm which can detect air leakage in time. The pressure in the tyre controls the on/off of a minitype emitter, which is arranged on an inflating valve of the tyre. A corresponding receiver is arranged at the driving cab. The minitype emitter is provided with a pressure chamber communicating with the tyre, therefore having the same pressure. When the pressure chamber has pressure, the metal nail in the minitype emitter is detached from a hollow air intake thimble valve, therefore the circuit is shut off; when the tyre leaks air, the air pressure of the pressure chamber thimble also decreases accordingly, the metal nail is contacted with the hollow air intake valve under the function of a spring, therefore the circuit is turned on. The receiver in the driving cab can send out an alarm, the vehicle can be stopped immediately, therefore reducing the loss of the tyre and preventing the traffic accidents.

Description

The motor vehicle tire leak alarm

The utility model relates to a kind of motor vehicle tire leak alarm, be that switch by the air pressure control miniature transmitter of wheel tyre cavity installs a miniature transmitter on tire valve is chewed, miniature transmitter automatic processing circuit when in the operator's compartment a small-sized receptor being installed when tire flat, receptor just sounds the alarm.

At present, prevent motor vehicle tire gas leakage accident, only way is frequent parking checking, loses time also not necessarily to prevent accident fully.

In order thoroughly to prevent the tire flat accident, the utility model provides a kind of motor vehicle tire leak alarm, prevents the tire flat accident, and relieved travels.

The technical scheme that its technical matters that solves the utility model adopts is: with a miniature transmitter device on the valve nozzle of tire, the air pressure of tire enters in the gas injection chamber of miniature transmitter, rubber reciprocation sealing film is outwards expanded, peg breaks away from hollow air inlet top nail valve shut-off circuit, when tire flat, the air pressure in the gas injection chamber also reduces thereupon, rubber reciprocation sealing film retraction, peg is contacted with hollow air inlet thimble valve open circuit, the receptor in the operator's compartment just sounds the alarm.

The beneficial effects of the utility model are: the tire flat receptor in time sounds the alarm, and can stop immediately, reduces the tire loss, tries to forestall traffic accidents.

Description of drawings

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

Fig. 1 is an outside drawing of the present utility model.

Fig. 2 is the elevation profile constructional drawing of miniature transmitter of the present utility model.

Fig. 3 is the utility model receptor.

Screw threads, 4 hollow air inlet thimble valves, gas injection chambers 5,6 rubber reciprocation sealing films, 7 pegs, 8 support reciprocal film and buckle bowl, 9 springs, 10 batteries, 11 casting copings, 12 circuit card IC1,13 insulator shell, 14 leads, 15 circuit card IC2,16 protecting sheathings, 17 and pass through lead in 2,1 fastening bayonet sockets among the figure, the 2 interface shells, 3.

In embodiment illustrated in fig. 2; fastening bayonet socket (1) is installed on the outer end that screws in interface shell (2); screw in to have in interface shell (2) hall and screw in interior screw thread (3) (matching) with the male thread of tire valve; at a hollow air inlet thimble valve of low side central means (4) that screws in interface shell (2) and the outside that is communicated with inboard, gas injection chamber (5) and has rubber reciprocation sealing film (6) rubber reciprocation sealing film (6) connect and support reciprocal film and buckle bowl (8) and be fixed together at the center point by peg (7); what be connected with the reciprocal film button bowl of support (8) is that spring (9) is that battery (10) upper end is that casting coping (11) is by lead (17) and circuit card IC1 (12) circuit passband with spring (9) upper end bonded assembly; insulator shell (13) insulating effect lead (14) is connected hollow air inlet thimble valve (4) and circuit card IC2 (15) circuit, protecting sheathing (16).At last fastening card (1) is fastened on the tire tube valve.

Its principle of work is, with the screw-in interface shell (2) of miniature transmitter pack on the tire valve male thread with screw in screw thread (3) coincide that the valve in the valve is backed down by hollow air inlet thimble valve (4) when being screwed into, the gas of wheel tyre cavity just enters gas injection chamber (5) by hollow air inlet thimble valve (4) because the effect rubber reciprocation sealing film (6) of air pressure begins to expand and supports reciprocal film and buckle bowl (8) and also outwards move and promote spring (9) and bounce back, make hollow air inlet thimble valve (4) and peg (7) shut-off circuit that is separated, the air pressure until gas injection chamber (5) in is with till the air pressure of taking turns tyre cavity equates.

When tire flat, the interior pressure reduces, gas in gas injection chamber (5) refluxes by hollow air inlet thimble valve (4) again thereupon, air pressure also reduces thereupon, while spring (9) Hui Li, the promotion reciprocal film button bowl of support (8) make rubber reciprocation sealing film (6) move to travelling backwards and contact switch opens until peg (7) with hollow air inlet thimble valve (4), form the loop by lead (14) switch on plate IC2 (15), at this moment the timely transmitting frequency of miniature transmitter is the 433M signal; Receptor such as Fig. 3 of installing the same channel in operator's compartment simultaneously send chimes of doom! Can stop immediately in case because of tire flat generation traffic accident.

Feature of the present utility model is hollow air inlet top needle-valve (4) and peg (7) be " switch " of miniature transmitter when the inner no air pressure in gas injection chamber (5), Hollow air inlet top needle-valve (4) contacts with peg (7), is to open circuit; Separating when air pressure is arranged, is shut-off circuit.

Claims (2)

1, a kind of motor vehicle tire leak alarm, receptor of device in miniature transmitter of device, the operator's compartment on tire valve is chewed, it is characterized in that: have hollow air inlet thimble valve to be communicated with the gas injection chamber in the miniature transmitter, there is rubber reciprocation sealing film the inboard, the outside connects supports reciprocal film button bowl, the gas injection chamber be fixed together at the center point when air pressure is arranged by peg, hollow air inlet thimble valve and peg break away from, be to close circuit, to contact with hollow air inlet thimble valve be not to open circuit to peg when having air pressure in the gas injection chamber.

2. motor vehicle tire leak alarm according to claim 1 is characterized in that hollow air inlet thimble valve is connected peg and is connected with circuit card IC1 with circuit card IC2.

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