CN2452777Y - Device for alarming tyre when being lack in pressure - Google Patents

Abstract

The utility model belongs to a device for detecting and alarming the air pressure of tyres of a motor vehicle. The device is composed of a push rod sensor, a DC ring and an alarm arranged in a driving room, wherein, the push rod sensor is arranged between a tyre and a steel ring; the DC ring is arranged between a vehicle shaft and a brake rim; signals led out from the sensor are passed to the alarm through the DC ring. When the air pressure of a tyre is insufficient, the alarm sends out a warning; when the tyre is filled with air, the alarm resumes normal. The device has the advantages of reliable movement, simpler structure, wide applicability, convenient installation and use.

Description

Alarm device for tyre underpressure

The utility model relates to a kind of detecting device of vehicle part, the instrument that particularly a kind of air pressure to vehicle tyre detects and reports to the police.

Existing automobile, trac., motor cycle tire substantially all use the inflated rubber tire, because inner pressure of tire force rate barometric pressure is big, add reasons such as tire material, air valve structure, also have wearing and tearing, accident pierces through, tire promptly can produce effects such as gas leakage, infiltration every a period of time, and air pressure descends, and has influenced travelling of vehicle.In order to guarantee the safety of vehicle ', chaufeur will often carry out hand inspection to tire, and way is very inconvenient like this, and discontinuous observation, can meet accident unavoidably, especially on express highway or meagrely-populated road, the air pressure inspection of tire seems even more important.For this reason, the someone has designed some tire pressures and has shown and warning device, has reported a kind of arcuation elastic metallic pipe as pressure sensor as Chinese patent 88202554, and the situation that tire pressure is changed passes to headstock, shows whether vehicle leaks gas under steam; Chinese patent 94228793 also discloses the power actuated vehicle warning device that loses heart, and it is to adorn signal transmission tube on the gabarit frame of wheel, adorns pressure sensor on the signal transmission tube, by alarm switch etc. with signal output in read out instrument; It is pressure sensor with bellows that Chinese patent 95202339 also discloses a kind of, by the distortion of bellows tire pressure is passed to signal processor and telltale.Above-mentioned disclosed document has used several different technical schemes to show or the air pressure of prompting wheel tyre changes situation, but the part that also comes with some shortcomings, the structure that has is complicated, the cost height, have to environmental inadequacies, promptly the pressure sensor installation site is bad, is made dirty by silt or dirt easily, the vehicle ' process can cause faulty sensor easily, circuit is prone to fault, and the pressure measurement scope that has is narrower, and commonality is bad, comformability is wideless, and promptly south, boreal climate can not adapt to.So design a kind of dependable performance and do not travelled that road conditions influence, the measure tire pressure of environmental concerns changes and the device of in time reporting to the police is many people problems of research at present.

The purpose of this utility model provides that a kind of structure is simple relatively, the alarm device for tyre underpressure of dependable performance, wide adaptability, the road conditions of not travelled and environmental concerns.

The utility model is realized in following mode: alarm device for tyre underpressure comprises sensor, transmission route and is contained in the annunciator or the Barometric Indicator table of headstock operator's compartment, the sensor that is characterized in this device adopts push rod sensor push rod sensor to be contained between the tire interior tyre cushion and steel ring, receive the direct current ring from the lead that the push rod sensor is drawn, receive the annunciator or the Barometric Indicator table of headstock operator's compartment then, the direct current ring is contained in the tumbler and not between the moving part of self-propelled vehicle of wheel.The push rod sensor is by shell, the metal contact, plastic sheet, push rod, spring, nut, component set-ups such as pig-tail wire, the shell available metal processes, metal sheeting and plastic sheet are equipped with in inside, and use spring application, push rod is contained in the upper end of shell, the round platform on push rod top is contained in the tire and contacts with tire or tyre cushion, the other end is fixed on the making leaf spring by screw thread, two metal sheets a slice is contained in (with the making leaf spring insulation) on the making leaf spring, cased of another sheet (with casing insulation), two metal sheets connects two leads respectively, draw from the hole of shell lower end, have between two metal sheets and the metal case plastic mattress or insulating gel water every, outer casing underpart is provided with adjustable bolt and semiclosed nut, in order to withstand spring and sealing parts, adjustable bolt is to be contained in the housing, and an end withstands spring, and the other end is used for artificial adjustment, adjust spring pressure, the air pressure of promptly reporting to the police by adjustable bolt.Whole sensor can be installed on the steel ring of wheel with nut.Except sensor and transmission route, the utility model is also set up the direct current ring, the direct current ring comprises parts such as outer shroud, interior ring, sheetmetal, steel ball, mounting ring, pressure spring, sleeve, between interior ring and sleeve pressure spring is housed, its pressure makes the sheetmetal on the inner and outer ring remain with steel ball and contacts, and direct current ring outer shroud is contained on the tumbler of wheel, for example is contained on the brake hubs of motor bike, automobile, and sleeve is contained on the not moving part of self-propelled vehicle, on the axle as automobile axle.Tire pressure prompting of the present utility model can realize by annunciator, also can realize by indicating instrument, annunciator can use common electric bell, Miniature acoustics device etc., as long as two leads are coupled together sensor, direct current ring and annunciator, connect the power supply on the locomotive, whole device just can have been worked; If the use indicating instruments can be received indicating instruments with the sensor pig-tail wire.Get final product the display of tyre pressure condition, its indicating instrument can use electronic instrument, digital display or veneer integrated circuit.

The principle of work of this alarm device for tyre underpressure is: when tire pressure just often, the sensor push rod is subjected to enough pressure and promotes making leaf spring and make length of spring compressed, two metal sheets is thrown off like this, route disconnects, annunciator is failure to actuate, and shows that air pressure is normal; When tire pressure (as is lower than 8kg/cm inadequately ²) time, spring can promote making leaf spring and make the two metal sheets contact, and at this moment circuit is connected, and current signal is delivered on the operator's compartment annunciator by the direct current ring, and annunciator sends warning, shows the air pressure deficiency.

Compared with the prior art, substantive distinguishing features of the present utility model and progress are:

1. reliable in action is not easy to failure, because sensor adopts the push rod form, loads onto behind the pressure after tested, than the sensor accuracy height of other form.

2. structure is simpler, and is easy for installation, do not change the structure of existing vehicle tyre;

3. wide adaptability, even in severe winter or cruel administration, or on the muddy hill path of raining, sensor also can normal operation.

Below in conjunction with accompanying drawing enforcement structure of the present utility model is described:

Fig. 1 is a general assembly scheme drawing of the present utility model;

Fig. 2 is post rod type sensor arrangement figure;

Fig. 3 is the constructional drawing of direct current ring.

From Fig. 1, see, sensor 1 is contained on the steel ring 4, and direct current ring 2 one ends are contained on the brake hubs 5, another side is contained on the automobile axle axle 6, annunciator 3 then is contained in the headstock operator's compartment 7, the signal wire (SW) of drawing from sensor 1 device 3 that behind direct current ring 2, receives the report for police service, and connect the storage battery of automobile or motor bike, just can normal operation.

From Fig. 2, see, push rod 11 is equipped with on the top of post rod type sensor outer housing 8, semiclosed nut 13 is arranged at the bottom, push rod 11 top round platforms contact with the inner tube of a tyre or tyre cushion, metal contact 9 (each a slice up and down) and making leaf spring 18 are housed in the shell, and plastic sheet 10 and insulating gel water layer 12 are arranged every living metal shell, spring 17 is housed below the making leaf spring 18, adjustable bolt 16 and semiclosed nut 13 are arranged at the spring bottom, and two leads 14 of drawing from metal contact 9 pass from centre hole 15.

See that from Fig. 3 the direct current ring is made of outer shroud 19 and interior ring 24, between ball 20 and sheetmetal 23 are housed, mounting ring 22 is lived ball 20 in order to frame, tightens up with screw 26, during spring 25 assemblings, sleeve 21 is contained in not on the moving part, interior ring 24 can be along the flat key activity on the sleeve, and ring 24 in the spring 25 on the sleeve compresses is kept in touch ball 20 and the sheetmetal on the inner and outer ring, holding signal is unimpeded, need not manually adjust, adopt this rolling structure, wearing and tearing are significantly reduced.

Claims (5)

1. alarm device for tyre underpressure, comprise sensor, transmission route and the annunciator or the Barometric Indicator table that are contained in the headstock operator's compartment, it is characterized in that sensor adopts push rod sensor 1, push rod sensor (1) is contained between the tire interior tyre cushion and steel ring, receive direct current ring (2) from the lead (14) that the push rod sensor is drawn, receive the annunciator (3) or the Barometric Indicator table of headstock operator's compartment then, direct current ring (2) is contained between the not moving part (6) of the tumbler (5) of wheel and self-propelled vehicle.

2. alarm device for tyre underpressure according to claim 1, it is characterized in that: push rod sensor (1) comprises shell (8), push rod (11), metal contact (9), spring (17), making leaf spring (18), semiclosed nut (13), the round platform of its push rod (11) is positioned at the upper end of shell (8), it is contained in the tire and contacts with tire or tyre cushion, the bottom of push rod (11) and metal contact (9), making leaf spring (18), spring (17) is contained in the inside of shell (8), the bottom of push rod (11) and making leaf spring (8) are by being threaded, two sheetmetals (9) a slice is contained on the making leaf spring (18), the cased portion of another sheet, there are plastic sheet (9) and insulating gel water layer (12) to be separated by between metal contact (9) and the shell, adjustable bolt (16) and semiclosed nut (13) are arranged at the bottom of shell, receive direct current ring (2) from the lead (14) that metal contact (9) is drawn from the centre hole (15) of shell (8) bottom.

3. alarm device for tyre underpressure according to claim 1, it is characterized in that: direct current ring (2) comprises outer shroud (19), interior ring (24), gold plaque (23), ball (20), mounting ring (22) and sleeve (21), between interior ring (24) and sleeve (21) pressure spring (25) is housed, ball (20) is kept in touch with the sheetmetal (23) of inner and outer ring, outer shroud (10) is installed on the tumbler (5) of wheel, and sleeve is contained on the not moving part (6) of self-propelled vehicle.

4. alarm device for tyre underpressure according to claim 1 is characterized in that annunciator can use common electric bell, the Miniature acoustics device, and its power supply uses battery power on the car.

5. alarm device for tyre underpressure according to claim 1 is characterized in that the Barometric Indicator table can use the veneer collector, digital display or other electronic instrument.

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