CN2488729Y

CN2488729Y - Alarm for car tyre

Info

Publication number: CN2488729Y
Application number: CN 00210283
Authority: CN
Inventors: 王长军; 邱英臣
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-13
Filing date: 2000-09-13
Publication date: 2002-05-01
Anticipated expiration: 2010-09-13

Abstract

The utility model relates to an alarm for car tyre, having a shell and a signal transmitting control circuit. Two corrugated tube chambers in the shell are provided with a spring and two corrugated tubes in order. The two corrugated tubes are respectively fixed on a circuit board with two low voltage switches, wherein, the circuit board is fixed on the shell. Two air ducts are respectively inserted in the two corrugated tubes, and the other ends of the two air ducts extend out of the shell and are subsequently and respectively provided with a valve cap. The fore end of each corrugated tube has an annular foil with dynamic contact heads. A circuit board having two over voltage switches is arranged in a square battery chamber. Two dynamic contacts respectively contact with the low voltage switches and the over voltage switches. Generally, the utility model has the advantages of convenient installation and use, correct alarm, free from faulty alarm and low production cost.

Description

The motor tire annunciator

The utility model relates to a kind of annunciator, particularly relates to a kind of under-voltage or superpressure annunciator that is installed on the motor tire.

Development along with industry, agricultural, commerce, building industry etc. has greatly promoted the development of communication, and the quantity of the automobile that runs quickly on the road increases sharply, and various autotrucies are wherein tender tender person especially.Yet, automobile under steam, tire flat is recurrent fault, if untimely discovery continues to run, the lighter's tire is damaged, weight person can cause roll-over accident, cause immeasurable loss can for life and property.Particularly on express highway, the speed of a motor vehicle is fast, vehicle is intensive, slows down suddenly in case vehicle tyre is out of order or stops because of tire is broken suddenly, can cause and knock into the back, even cause many cars continuously the pernicious traffic accident of collision take place.Want frequent parking checking tire for safe driving automobilist, especially truckie and see whether it leaks gas.For eliminating automobilists' trouble and worry, multiple tyre alarm once appearred on the market, as pointer-type, valve hat type, infrared or ultrasonic type annunciator, but inconvenience is installed, loaded down with trivial details, poor anti jamming capability, easily wrong report is lost easily with destroyed.Therefore, fail to be applied.

The purpose of this utility model is to provide a kind of simple in structure, easy to install and use at the problems referred to above, the motor tire annunciator that report to the police accurately, cost is low.

The purpose of this utility model realizes by following technical proposals, that is:

The motor tire annunciator comprises projector and receptor, and receptor is installed in the operator's compartment, and projector is installed on the wheel hub of tire.Projector is a characteristic of the present utility model.

Projector comprises housing, two bellowss, two ventilation flues, two springs, two moving contacts, two high-pressure rubber pipes and signal countdown circuit.Two bellowss are separately fixed on the supporting plate, and are connected with the supporting plate air-tightness.Two ventilation flues' a end passes supporting plate respectively and inserts in two bellowss, and its other end connects with the valve cap of being with thimble after loading onto valve guide respectively.The valve cap of two band thimbles respectively with two high-pressure rubber pipes on the valve nozzle joint connect, the other end of two high-pressure rubber pipes is linked with the valve cap joint respectively.Be fixed with moving contact respectively on two bellowss.Two bellowss are installed in the housing, and supporting plate is fixed on the housing, and an end of two springs is replaced respectively on two bellowss, and the other end is replaced on housing respectively.It is upper and lower when mobile to be fixed on two moving contacts on the bellows, can contact with cooresponding under-voltage switch or superpressure switch respectively.The signal countdown circuit comprises encode circuit, transmission circuit and control circuit.Encode circuit comprises IC PT2262, resistance R ₃-R ₁₁, diode D ₁-D ₄Transmission circuit comprises aerotron G ₁, G ₂, resistance R ₁, R ₂, capacitor C ₁, C ₂With coil L ₁, L ₂Control circuit comprises under-voltage K switch ₁, K ₂, the superpressure K switch ₃, K ₄, light-emitting diode D ₅With the dismounting K switch ₅Light-emitting diode D ₅Be relay indicating light.Power supply is the 12V battery.

The components and parts of signal countdown circuit are installed on the circuit card, and circuit card is fixed in the housing.

In above-mentioned housing, can offer two bellows chamber, two valve guide through holes and battery chamber, two bellows chamber have opening to be communicated with the battery chamber respectively.Two moving contacts can be separately fixed on two ring plates, and with ring plate be an integral structure, described ventilation flue is a capillary tub.Described supporting plate is a circuit card, two under-voltage switches, dismounting switch and light-emitting diode D ₅Be installed on this circuit card, promptly be installed on the supporting plate.The ring plate of two drive contacts is set in the front end of two bellowss.Be respectively charged into a spring in two bellows chamber, two bellowss are respectively charged in two bellows chamber, replace on spring light-emitting diode D ₅, insert the light-emitting diodes pipe through-hole on the housing.Supporting plate is fixed on the housing, and two capillary tubs stretch out outside the housing from two valve guide through holes respectively after loading onto valve guide respectively.Two superpressure switches are separately fixed on another piece circuit card, and lay respectively at the opening part of two bellows chamber, and two moving contacts can contact with cooresponding under-voltage switch or superpressure switch respectively.Battery is installed in the battery chamber.

On the diapire of two bellows chamber spring capping can be set respectively, the upper end of this spring capping contacts with spring.Two plus-minus screws stretch into respectively in two bellows chamber, and replace respectively on two spring cappings.

The principle of work of motor tire annunciator:

The utility model is installed on the wheel hub of motor tire,,,,, receives respectively on the valve nozzle of two tires by the valve cap joint two high pressure hoses so the utility model is " holder two " because the trailing wheel of autotruck generally is a twin tire.At this moment the air pressure in two tires is guided in two bellowss of projector simultaneously, and the air pressure in the bellows just air pressure with the wheel tyre cavity is identical.If the air pressure of a wheel tyre cavity descends, the air pressure in the bellows relative with this tire also descends thereupon in the projector so, and this bellows contract is moved after driving moving contact simultaneously.When bellows dropped to setting value, moving contact just contacted with a cooresponding under-voltage switch with it, switch on, projector work, the outwards code signal that in advance configures of emission.Be installed in after receiver in the operator's compartment receives signal, indicate certain tires under-voltage through amplification, shaping, decoding, language alarm, indicator lamp, chaufeur is in time handled, minimizing accident and loss.In like manner because the rotation of high temperature and tire friction, the air pressure of wheel tyre cavity raises, if certain air pressure of taking turns tyre cavity has surpassed setting value, begins bulging with the cooresponding bellows of this tire, drive moving contact rises thereupon, when reaching setting value, this moving contact just upwards is pressed onto on the superpressure switch, switch on, launch the superpressure signal, make the receptor that is arranged in the operator's compartment receive the superpressure alerting signal, remind the driving driver in time to handle, avoid fault to take place.The high and low pressure setting value of projector can be set up by plus-minus screw.

It is little to the utlity model has volume, advantage such as highly sensitive, strong interference immunity, no wrong report.In addition, because the utility model is " holder two " type, promptly a projector can monitor and give the air pressure of reporting two tires, has reduced the quantity of projector, has also just reduced cost.That the utility model also has is dustproof, waterproof, advantage such as shockproof, sturdy and durable.

Fig. 1 is the schematic appearance of a kind of embodiment of the present utility model, and Fig. 2 is the A-A view of Fig. 1, and Fig. 3 is the housing birds-eye view, and Fig. 4 is a housing rear cover structure scheme drawing, and Fig. 5 is signal mission controller schematic circuit diagram.

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.

The motor tire annunciator comprises projector and receptor, and receptor is installed in the operator's compartment.Projector is installed on the wheel hub of motor tire.

Projector comprises housing 1, bonnet 2, control circuit and tire pressure variable signal output unit transmit.Tire pressure variable signal output unit comprises two bellowss 3, two ventilation flues 4, two valve guides 20, two ring plates that drive contact 56, two springs 7, two spring cappings 8, two plus-minus screws 9, battery 10.A rectangular cell chamber 11, two circle corrugated pipe chambers 12, two ventilation flue's through holes 13 and light-emitting diodes pipe through-holes 14 are arranged in the housing 1.Two bellows chamber 12 have gap 18 to communicate with battery chamber 11 respectively.The control circuit that transmits comprises encode circuit, transmission circuit and control circuit.Encode circuit comprises integrated circuit PT2262, resistance R ₃-R ₁₁, diode D ₁-D ₄Transmission circuit comprises aerotron G ₁, G ₂, resistance R ₁, R ₂, capacitor C ₁, C ₂With coil L ₁, L ₂Control circuit comprises under-voltage K switch ₁, K ₂, the superpressure K switch ₃, K ₄, light-emitting diode D ₅With the dismounting K switch ₅The control circuit that transmits is a known circuit.Under-voltage K switch ₁, K ₂, light-emitting diode D ₅With the dismounting K switch ₅Be installed on the circuit card 15, all the other electric elements are installed in respectively on circuit card 16 and 17.

Two spring cappings 8 are separately positioned on the diapire of two circle corrugated pipe chambers 12, and two bellowss 3 are separately fixed on the circuit card 15, are positioned at two under-voltage K switch ₁, K ₂The same side, and be connected with circuit card 15 air-tightness.Two ventilation flues 4 pass circuit card 15 respectively and extend in two bellowss 3, and be connected with circuit card 15 air-tightness solid weldings, two ventilation flues 4 are capillary tub, and circuit card 16,17 is arranged in the rectangular cell chamber 11 in the housing 1, two superpressure K switch on the circuit card 16 ₃, K ₄Lay respectively at the bottom of two gap 18.Two springs 7 and two spring cappings 8 are installed in respectively in two bellows chamber 12 successively, two bellowss 3 are loaded onto respectively to be inverted respectively after the ring plate 6 that drives contact 5 and are installed in two bellows chamber 12, and replace respectively on two springs 7, two ventilation flues 4 stretch out outside the housing from two ventilation flue's through holes 13 respectively after loading onto valve guide 20, and light-emitting diode D5 inserts in the light-emitting diodes pipe through-hole 14.Circuit card 15 is fixed on the housing 1.Battery 10 is installed in the battery chamber 11, the fixing bonnet 2 of going up.Two plus-minus screws 9 connect with screw hole on the housing 1 with screw thread respectively, its front end stretches into respectively in two bellows chamber 12, replace on spring capping 8, on two valve guides 20, be equiped with the valve cap 21 of band thimble respectively, valve cap 21 connects with screw thread and the valve nozzle joint 23 that has pneumatic hose 22, and the other end of pneumatic hose 22 is connected with valve cap joint 19.

Claims

1, the motor tire annunciator comprises projector, and projector can be installed on the wheel hub of motor tire; Projector comprises the control circuit that transmits, housing (1), bonnet (2) and tire pressure variable signal output unit; The signal countdown circuit comprises encode circuit, transmission circuit and control circuit, and control circuit comprises under-voltage switch (K ₁), (K ₂), superpressure switch (K ₃), (K ₄), light-emitting diode (D ₅) and dismounting switch (K ₅), the electric elements of signal countdown circuit are separately positioned on circuit card (15), (16) and (17), circuit card (16), (17) are installed in the battery chamber (11), it is characterized in that battery chamber (11) and two bellows chamber (12) are arranged in the described housing (1), two bellows chamber (12) have gap (18) to communicate with battery chamber (11) respectively; Described tire pressure variable signal output unit comprises two bellowss (3), two ventilation flues (4), two valve guides (20), two ring plate (6), two springs (7) that drive contact (5); Under-voltage switch (K ₁), (K ₂), light-emitting diode (D ₅) and dismounting switch (K ₅) be installed in respectively on the circuit card (15), two bellowss (3) are installed in respectively on the circuit card (15), are positioned at under-voltage switch (K ₁), (K ₂) the same side, and be connected with circuit card (15) air-tightness; Two ventilation flues (4) pass circuit card (15) respectively and extend into respectively in two bellowss (3), and are connected with circuit card (15) air-tightness solid welding; Two springs (7) are installed in respectively in two bellows chamber (12), after the ring plate (6) of two drive contacts (5) is set in the front end of two bellowss (3), two bellowss (3) are inverted and are installed in the bellows chamber (12), and replace respectively on two springs (7), two ventilation flues (4) load onto valve guide (5) the back ventilation flue's through hole (13) from housing (1) respectively and stretch out outside the housing (1) and be connected light-emitting diode (D with valve cap (21) ₅) insert the light-emitting diodes pipe through-hole (14) on the housing (1); Two superpressure switch (K ₃), (K ₄) be installed on the circuit card (16), driving that contact (5) is upper and lower can be respectively when mobile and under-voltage switch (K ₁), (K ₂) or superpressure switch (K ₃), (K ₄) contact.

2, motor tire annunciator according to claim 1 is characterized in that described battery chamber (11) is microscler battery chamber, and described two bellows chamber (12) are the circle corrugated pipe chamber.

3, motor tire annunciator according to claim 1 and 2, it is characterized in that on the diapire of two bellows chamber (12), being respectively arranged with spring capping (8), two plus-minus screws (9) respectively with housing (1) on two screw holes with spiral marking connection, its front end inserts respectively in two bellows chamber (12), and replaces respectively on spring capping (8).

4, motor tire annunciator according to claim 1 is characterized in that described valve cap (21) connects with screw thread and the valve nozzle joint (23) that has pneumatic hose (22), and the other end of pneumatic hose (22) is connected with valve cap joint (19).