CN2275238Y - Monitor for automobile brake condition - Google Patents

Abstract

The utility model relates to a monitor for automobile brake condition, composed of a detection switch which is arranged on the automobile brake part and a display circuit which takes out a detection signal and reflects the brake condition. The utility model is characterized in that the detection switch is mainly composed of a moving contact which is arranged in a spiral spring and can elastically contact a brake drum surface, and the signal is attached to the luminous tube of a vehicle-shaped flow board through a conducting wire. The utility model can visually display the brake condition and the wearing limit and the warning of a brake sheet, and visually display if the stop lamp normally works, etc. The utility model is a monitoring device for being favorable for safe driving.

Description

Automobile brake condition monitoring device

The utility model belongs to a kind of working condition that can observe motor vehicle braking systems at any time, avoids traffic accident and monitoring device that incident violating the regulations takes place.

The operate as normal of brake system of car is the key that guarantees traffic safety.Brake system comprises: hydraulic pressure (air pressure), brake pump, wheel cylinder, pump line, air-brake coupling hose, leather cup, air chamber diaphragm, brake-shoe, brake cam, brake drum etc.; The reflection of above-mentioned each parts function in brake system shows by four brakeages on the four wheels of front and back fully.The demonstration of braking situation is again to make prompting by vehicle and pedestrian that brake lamp is followed rearwards.Can not recognize the braking situation intuitively as the operator, thus in the process of moving brake lamp do not work or certain wheel brake situation is undesired just can't discover, cause traffic hazard or incident violating the regulations, cause damage or bother.If the operator can observe above-mentioned two kinds of unexpected things at any time under steam, just can effectively avoid the generation of accident.Secondly, the operating limit that may wear to of brake(-holder) block fails in time to find, usually also can cause the accident.Usually the driver has only observation at any time, so that in time pinpoint the problems, and the hidden danger that the elimination accident takes place, problem can solve, but and inconvenient.In recent years the existing creativity and innovation that utilizes modern electronic technology to solve the problems referred to above is that 91228931.7 patented claim promptly belongs to this type of technology as application number.Its weakness is that the wearing and tearing that only are confined to brake shoe are reported to the police, can not observe the working condition of detent, as the race of automotive brake when monolateral, this device just can not be warned, more do not know the working condition of brake lamp, the alarm indication circuit is also complicated, and the also inconvenience maintenance that is out of order is unfavorable for applying.

The purpose of this utility model just provides a kind of brake block wear limit that can reach and reports to the police, and can make the operator observe the automobile brake condition monitoring device of the working condition of four detents and associated brake lamp at any time again.

The scheme that realizes above-mentioned purpose is by being installed in braking situation and the brake(-holder) block wear limit testing agency on the braking automobile brake component and reflecting that the signal indication mechanism of brake system working condition constitutes, the mechanism that obtains braking situation and wear limit signal is mounted in the detector switch on the brake-shoe, its main points are that detector switch mainly constitutes by being contained in coil spring in the spring housing and the moving contact that snaps in the spring, and the detection signal indication mechanism is received car shape by the lead that is connected with each switch and simulated that each luminotron corresponding to brake system constitutes on the display board.

Further scheme is all to be equipped with one to be used to monitor automobile brake status detection switch, a detector switch that is used for the brake monitoring pad wear limit on each brake-shoe of wheel of the bus.Detected signal shows that being one is shaped on car shape vehicle contour and that the light emitting diode corresponding with each wheel position is housed on it and simulates display board.Be connected in series the brake lamp working state monitoring circuit that is formed in parallel by shunt resistance and luminotron in skidding state-detection switch and the corresponding brake light circuit, and luminotron also is contained in car shape and simulates on the display board.

The braking detector switch is mainly by the cylindrical springs cover, coil spring is installed in cover, has been adorned and to have contacted with brake drum in the middle of the spring, obtain the first-class formation of movable contact of on-position signal, the periphery of spring housing is a luminotron, is shaped on the contiguous block that is used to install switch on its outer wall wall.For avoiding brake drum to be divided into the groove mark by moving contact, damage brake drum, the contact portion of moving contact adopts copper carbon brush, has both protected brake drum, reaches again the sensitive effect of detection signal reflection.

Signal simulates display board and is installed on the bridge instrumentation platform, made the vehicle contour line on it, two not homochromy luminotrons respectively being installed, be connected with brake(-holder) block wear limit alarm detection switch with the skidding situation respectively with four wheels corresponding position, automobile front and back.The afterbody of vehicle contour line is adorned two luminotrons that are serially connected with brake lamp.Can simulate the indicator signals such as warning of the whether luminous and brake(-holder) block of the on-position of seeing each wheel on the display board intuitively, brake lamp when may wear to the limit at signal like this.

The utility model has the advantages that by monitor and can accurately the brake system working signal be taken out, simulating the on-position that has intuitively reflected each wheel on the display board, the duty of brake lamp and the wear limit demonstration of certain brake(-holder) block etc. through circuit again.Help the driver and under any circumstance all can in time pinpoint the problems, repair with a definite target in view and change corresponding component.Owing to there is the brake lamp working state signal to show, avoided that brake lamp damages suddenly in the driving way, the driver does not know the incident violating the regulations that causes.So the utility model is the appropriate technology that a kind of favourable driver grasps the braking situation comprehensively.

Fig. 1, automobile vehicle contour simulate display board;

Fig. 2, signal display circuit figure;

Fig. 3, detector switch structure and mounting means figure;

Fig. 4, the detector switch installation site synoptic diagram on wheel.

Below in conjunction with accompanying drawing,, scheme of the present utility model is elaborated as an embodiment.

With reference to Fig. 1,3, on-position and brake(-holder) block wear limit detector switch are made of shell 7, spring housing 10, coil spring 9 and moving contact 11.Shell 7 is outer protectives of switch, and spring housing 10 has been installed in it tightly, and its outside is shaped on and is used for switch is fixedly connected on contiguous block 8 on the skidding hoof 1.Make spring housing 10 with insulating material, it is stuck in shell 7 inner chambers closely, coil spring 9 is contained in spring housing 10 inner chambers again, the block 6 by the spring housing both ends compresses.Switch movable contact 11 is made round bar shape, and top and spring are affixed.If when being used to detect on-position, the upper end contact portion 2 of moving contact should guarantee to stretch out the brake(-holder) block 5 outside surfaces length of 0.5mm at least; If be used for brake(-holder) block friction limiting alarm, the length of moving contact 11 will guarantee that contact portion 2 reaches the limit of friction value position of setting on the brake(-holder) block, generally should make and select for use the moving contact length of detector switch according to the gap size of 3 of the employed brake(-holder) block thickness of vehicle and brake-shoe 1 and brake drums.The head 2 of moving contact 11 is made copper carbon brush, in order to the sensitive brake drum 3 that does not does not wear and tear again and be in contact with it of signal reflection.Draw lead from the tail end of moving contact 11, simulate on the pin of the luminotron on the display board another pin bonding to signal with power series.Produce once braking action, the moving contact of detector switch is about to the loop and connects, and luminotron is shinny, shows on-position.

With reference to Fig. 4, the detector switch of two kinds of functions will making by such scheme is installed on the brake actuator and gets final product.Before the installation, in the medium position perforate 4 of two brake-shoes 1, be used for the installation and measuring K switch earlier ₁-K ₈, make two switches be positioned at the both ends of a diameter line, position of opening should determine that also promptly a detector switch is used to detect on-position according to the function of detector switch, another is used to detect the brake(-holder) block abrasion and reports to the police.The former should make the contact portion 2 of moving contact 11 stretch out brake(-holder) block 5 rubbing surfaces at least the 0.5mm latter should decide punch position according to the brake(-holder) block limit of friction size of determining.The position punching 4 of stretching out corresponding to moving contact on brake(-holder) block 5 again is used to allow moving contact 11 and brake drum face 3 contact or reach the brake(-holder) block wear limit position of setting when braking.Before the fixed test switch, moving contact 11 is stretched in the hole on the brake(-holder) block 5, be fixed in again on the brake-shoe 1.

With reference to Fig. 1,2,4, the signal that will have automobile vehicle contour line simulates display board and is installed in bridge instrumentation platform position, again the detector switch K that has installed from the brake-shoe 1 of each wheel 14 ₁-K ₈The tail end lead 13 of drawing, receive signal through power supply and simulate on the display board.The signal wire of driving earlier wire hole 12, two switches before the wiring on wheel hub passes from the hole.The signal of two detector switches of each wheel is received respectively and is simulated on the light emitting diode corresponding with each wheel on the display board.Four luminotron D in the outside ₁-D ₄Show the skidding state, four inboard luminotron D ₅-D ₈Show the brake(-holder) block wear limit, two luminotron D of vehicle contour line afterbody ₉, D ₁₀Be serially connected in the brake lamp circuit, bear the supervision of brake lamp.

With reference to Fig. 1,2, two detector switch K of preceding revolver ₁, K ₅Signal be connected on get on the bus two luminotron D on the preceding left side of shape line of breadboard ₁, D ₅On; Two detector switch K of front right wheel ₂, K ₆Signal be connected on get on the bus two luminotron D on the right before the shape line of breadboard ₂, D ₆On; Two detector switch K of back revolver ₃, K ₇Signal be connected on the get on the bus two luminotron D on the left side behind the shape line of breadboard ₃, D ₇On; Two detector switch K of rear right wheel ₄, K ₈Signal meet the get on the bus two luminotron D on the right behind the shape line of breadboard ₄, D ₈On.Brake lamp D _X1, D _X2Signal respectively from be responsible for detecting the detector switch K of two trailing wheels braking situation ₃, K ₄The place takes out signal, through D _X1, D _X2Be concatenated into get on the bus two luminotron D of shape line afterbody of breadboard again ₁₀, D ₉On, luminotron D ₁₀, D ₉Respectively with shunt resistance R ₁, R ₂And after connecing again serial connection go in separately the loop.

During use, the driver depresses brake pedal, is installed in each the detector switch K on the brake-shoe ₁-K ₈Moving contact all close to brake drum under the effect of damping force, K wherein ₁-K ₄Moving contact will contact with the brake drum face, its corresponding luminotron is connected, then luminotron D with the loop that power supply constitutes ₁-D ₄Shinny synchronously, the expression braking is normal; As not shinny or asynchronous shinny person is wherein arranged, the braking of the wheel of then explanation correspondence has fault, reminds driver's maintenance.Loosen the brake D ₁-D ₄Should be simultaneously not shinny, if any extinguisher not, illustrate that then the brake-shoe spring of respective wheel has problem, brake cam hair fastener etc.Also remind the driver in time to fix a breakdown.K ₅-K ₈Be brake(-holder) block wear limit alarm detection switch, luminotron D correspondingly ₅-D ₈, under normal circumstances not luminous, have only when the brake(-holder) block of pairing wheel may wear to the setting limit gauge, when braking, corresponding pipe is just luminous, and prompting should change this brake(-holder) block.When depressing brake pedal and make brake operating, D ₉, D ₁₀Also should be luminous, expression brake lamp operate as normal does not work as it, illustrates that then brake lamp has problem, should overhaul.For the ease of identification, can be with D ₁-D ₄Elect a kind of luminotron of look as, D ₅D ₈Be the luminotron of another color code, use more clear eye-catching.

The utility model is simple in structure, and is easy for installation, and signal shows clear, and reaction accurately.Can make the driver see the source of fault in the brake system intuitively.The rapid processing of favourable problem, the generation of the mechanical accident of avoiding driving a vehicle and the trouble of bringing violating the regulations.

Claims (4)

1, a kind of automobile brake condition monitoring device, be made of the signal indication mechanism that is installed in braking situation on the braking automobile brake component and brake(-holder) block wear limit testing agency and reflection brake system working condition, the mechanism that obtains braking situation and wear limit signal is mounted in the detector switch K on the brake-shoe (1) ₁-K ₈, it is characterized in that detector switch mainly by being contained in the coil spring (9) in the spring housing (10) and snapping in moving contact (11) formation in the spring, the detection signal indication mechanism by with each K switch ₁-K ₈The lead that is connected is received car shape and is simulated on the display board each luminotron D corresponding to brake system ₁-D ₈Constitute.

2, automobile brake condition monitoring device according to claim 1 is characterized in that all being equipped with one on each brake-shoe (1) of wheel (14) is used to monitor skidding status detection K switch ₁-K ₄, a detector switch K who is used for the brake monitoring pad wear limit ₅-K ₈

3, automobile brake condition monitoring device according to claim 1, it is characterized in that detected signal show be one that be shaped on vehicle contour on it and be equipped with and the corresponding light emitting diode D in each wheel (14) position ₁-D ₈Signal simulate display board.

4, automobile brake condition monitoring device according to claim 1 is characterized in that skidding state-detection K switch ₃-K ₄And corresponding brake lamp D _X1, D _X1Be connected in series in the circuit by shunt resistance R ₁, R ₂With luminotron D ₁₀, D ₉And connect the brake lamp working state monitoring circuit that forms, and luminotron D ₉, D ₁₀Also being contained in car shape simulates on the display board.

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