CN2101604U

CN2101604U - Tyre pressure-reducing alarm for motor vehicle

Info

Publication number: CN2101604U
Application number: CN 91224054
Authority: CN
Inventors: 朱立斌
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-08-26
Filing date: 1991-08-26
Publication date: 1992-04-15

Abstract

The utility model relates to a tire pressure-reducing alarm for motor vehicles, composed of a screw thread, a sensor body 1, an elastic element 2, a movable contact 3, an electrode contact spring 5, a radio signal launcher 6, a wireless, a receiver 8, and a power supply 10, which is characterized in that the screw thread is arranged on the outside of a tire valve 11; the sensor body 1 made of insulated materials is arranged on the end surface of the tire valve 11; the sensor body 1 is provided with the elastic element 2; the movable contact 3 presses the elastic element 2 and is fixed on an insulated pressure spring seat 13 whose one end contacts a valve core shaft 12; the electrode contact spring 5 switches on by means of the elastic element 2 and the movable contact 3. The pressure design of the elastic element is suitable for the tires of high, middle, low grades of different working pressure hierarchies. The utility model is directly arranged on a valve mouth and has the advantages of high sensitivity and reliability, simple structure, and low cost.

Description

Tyre pressure-reducing alarm for motor vehicle

Warning device when the utility model relates to inner tube of tyre for motor-vehicle air pressure and drops to specified limit.

Power actuated vehicle in motion, often because of tire flat, pressure decay and blowing out grinds tire, influences vehicle ', causes economic loss.In order to address this problem, document has been introduced the multiple warning device of blowing out of preventing, with the utility model is maximally related CN88202554U arranged, a kind of warning device of this article introduction is that the arcuation elastic metallic pipe of rectangle is a pressure sensor with the cross-sectional plane, is connected with joint at opening one end of pressure sensor, and power supply output contact also is equipped with in other end sealing, it is a moving contact, by a fixed contact contact or a separation that is called electric connecting plate, and radio signal is produced or disappearance, reach the warning purpose.But this structure is equipped with flexible pipe between pressure sensor open end and joint, and this flexible pipe is the principal element that causes this device not use safely, this is because self-propelled vehicle and trailer are being worked than under the condition of severe often, such as loading and unloading building stones, sand, coal etc., bulk freight is usually flowed or blow over and cover completely whole tire after unloading, various sharp objects might be pulled apart, cut this flexible pipe, can not travel and tire is lost heart.When this device is installed, inevitably can produce disappointing phenomenon simultaneously, this psychologically causes a kind of sense of insecurity for the user.

The design the purpose of this utility model is the shortcoming that overcomes above-mentioned annunciator, and a kind of warning device that bleeds a tire is provided, and this device has simple in structure, the advantage safe and reliable, highly sensitive, that cost is low.

For achieving the above object, this warning device is by a sensor body 1 that can be contained in the insulation material system on tire valve 11 outside threads and the end face, the elastic element 2 of a suitable elasticity in sensor body 1, armature contact 3 on insulation spring abutment 13 of pressing elastic element 2 to be fixed again at one end to touch valve mandrel 12, one by the electrode contact spring 5 of elastic element 2 with armature contact 3 conductings, fastening reed 5 insulation nut 4, radio-signal transmitter 6 on sensor body 1, wireless 7, receptor 8, power supply 10 compositions such as grade.

The power of annunciator is from elastic element 2, elastic element 2 design-calculated maximum working pressure (MWP)s are less than the stress of tire normal operating pressure to valve mandrel 12, and elastic element minimum working pressure power then equals tire stress to the valve mandrel under minimum safe limit operation pressure.

The distance range of design-calculated armature contact 3 in 1 of sensor body equals the displacement of valve mandrel 12, and circuit can be switched on and off well.

Concrete structure of the present utility model is provided by accompanying drawing.

Fig. 1 is the utility model structural representation

Fig. 2 is radio signal receiver and acousto-optic device scheme drawing.

The sensor body that sequence number sign 1 is made for plastics among the figure, 2 helix elastic elements, 3 bowl-shape metal armature contacts, 4 plastics fastening nuts, 5 electrode contact springs, 6 plastics radio signal generators, 7 emissions are wireless, 8 radio systems, 9 or light signal device, 10 electroded fastening cards, 11 tire valves, 12 valve mandrels, 13 plastics press spring bases.

Valve mandrel 12 is contained on the tire tube valve among the figure, plastics sensor body 1 screws on tire tube valve 11 termination outside threads, the spiral spring element 2 of elastic force appropriateness is housed in the sensor body 1, spring 2 is overlapping plastics press spring base 13, head on bowl-shape metal armature contact 3, armature contact 3 is fixed on plastics press spring base 13 middle-ends, press spring base 13 end faces contact with valve mandrel 12 end faces, at sensor body 1 inwall and 2 of spring elements a bent waveform electrode contact spring 5 is arranged, it is close to solid nut 4 and is pressed on the sensor body 1, radio signal generator and external member 6 thereof are commercially available single channel signal expelling plate, be contained in outside the tire tube valve, it has plastic casing, in battery 10 is housed, battery supply one utmost point receiving electrode contact spring 5, one utmost points are connected on the card on tire tube valve 11 metal cases.Radio signal receiver 8 is contained on the car chassis after cross member, and effector 9 is that acousto-optic device is placed in the operator's compartment.

The design of the elastic force of elastic element 2 is to screw in tire tube valve when putting in place by sensor body 1, the release pressure of spring is the alarm pressure of tire, so work as tire pressure just often, screw in the process of tire tube valve 11 at sensor body 1, elastic element 2 is gradually reduced, this moment, armature contact 3 was also by thereupon to left dislocation, leave with tire tube valve 11 end faces, the circuit of radio producer disconnects, so radnos generation, radio system 8 can not receive signal, and annunciator is not reported to the police.

When tire loses heart for a certain reason, the tire internal pressure reduces gradually, when pressure drops to the release pressure of elastic element 2 when following, then elastic element 2 is just upheld, and compressing valve mandrel 12 moves right, armature contact 3 just contacts with the end face of tire tube valve 11, thereby connect the circuit of radio producer 6, produce radio signal, this moment, radio system 8 was worked immediately, make signal device 9 generation sound or visual alarms, remind chaufeur to take measures.

The elastic element of design or production different operating pressure, applicable to the high, medium and low tire that waits the different operating pressure rating, the user need not adjust the operation pressure of this device in installation process, guarantees its high sensitivity and reliability.

The utility model is the warning device when air pressure drops to specified limit in a kind of power actuated vehicle, be applicable to the situation that a variety of causes causes the middle motor vehicle wheel air pressure of travelling to descend, when the pressure of a comparatively safe use, report to the police, remind chaufeur in time to take measures, prevent the improper use of tire, stop to grind the tire accident, improve the service life of tire.

Claims

1, a kind of automobile tyre step-down warning device, it is characterized in that the sensor body 1 that is contained in the insulation material system on tire valve 11 end faces by one, the elastic element 2 of a suitable elasticity in sensor body 1, armature contact 3 on insulation spring abutment 13 of pressing elastic element 2 to be fixed again at one end to touch valve mandrel 12,5, one radio-signal transmitter 6 of electrode contact spring by elastic element 2 and armature contact 3 conductings, wireless 7, receptor 8, power supply 10 are formed.

2, automobile tyre step-down warning device as claimed in claim 1, it is characterized in that elastic element 2 design-calculated maximum working pressure (MWP)s less than the stress of tire normal operation air pressure to the valve mandrel, minimum working pressure power then equals tire at the stress of minimum safe limit operation pressure to the valve mandrel.

3, automobile tyre step-down warning device according to claim 1, armature contact 3 movable distance equal the displacement of valve mandrel 12 when it is characterized in that work, and make it switch on and produce and send out an alert signal.

4, automobile tyre step-down warning device according to claim 1 is characterized in that directly utilizing tire tube valve outside thread and end face to install and the location.