CN207583901U - A kind of drum brake wear sensor - Google Patents
A kind of drum brake wear sensor Download PDFInfo
- Publication number
- CN207583901U CN207583901U CN201721635268.8U CN201721635268U CN207583901U CN 207583901 U CN207583901 U CN 207583901U CN 201721635268 U CN201721635268 U CN 201721635268U CN 207583901 U CN207583901 U CN 207583901U
- Authority
- CN
- China
- Prior art keywords
- rotor
- resistance
- stator
- angle
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000006698 induction Effects 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 230000001939 inductive effect Effects 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 50
- 239000000758 substrate Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000033001 locomotion Effects 0.000 description 12
- 238000009434 installation Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model provides a kind of drum brake wear sensor, and the sensor is made of stator and rotor, and rotor is in stator and relative to stator rotation；Resistance angle induction device and stationary brushes are installed on stator；Rotor is made of rotor body, conducting ring and rotor brush, and rotor body is embedded in conducting ring, and rotor brush is mounted on the circumference of conducting ring；Stationary brushes are connected with conducting ring circumferential end surfaces；Rotor brush is in contact with resistance angle induction device, is sequentially connected electrically resistance angle induction device, rotor brush, conducting ring and stationary brushes, and passes through stationary brushes and export the inductive signal of resistance angle induction device outward；The stator is fixed on the camshaft stand of brake, and the rotor is keyed with camshaft, and with camshaft synchronous rotary.Sensor described in the utility model realizes the detection of brake strip abrasion condition and brake state by detecting the resistance variations in braking process.
Description
Technical field
The utility model belongs to vehicle brake detection technique field, suitable for assembling the vehicle of drum brake, specifically
It is related to a kind of drum brake wear sensor.
Background technology
At present, drum brake at home passenger car, generally use in commercial car, the use ratio especially in commercial car
Highest.For medium and heavy commercial car generally using Pneumatic braking system, brake is air pressure S cam drum type brakes, largely assembles hand
Dynamic adjustment arm, needs periodically to carry out manual lash adjustment.Often because brake clearance adjusts not in time, caused brake force declines
Lead to tragic incident.For this purpose, GB 7258 and GB 12676 require associated vehicle to install automatic adjuster for braking clearance, gap is equipped
The vehicle of automatic regulating apparatus does not need to periodically frequently be manually adjusted, but user can not know friction disc wear situation,
Brake drum, brake disc can be damaged under limiting case, brake force is caused drastically to decline, braking is ineffective.For this purpose, the requirement dresses of GB 7258
With friction disc wear instruction device, to prompt driver's more renewal of facing renewal in time.
Relevant laws and regulations requirement is as follows：
7258 7.2.7 of GB requirements car, lorry of the gross mass more than 3500kg and special Operation Van (have a11wheel drive
Except the lorry of function and special Operation Van), semitrailer of the gross mass more than 3500kg and all vehicle transport dangerous goods
All running brakes should equip automatic adjuster for braking clearance.
Car, lorry and the gross mass of 7258 7.9.5 of GB installation automatic adjuster for braking clearance are more than 3500kg's
Special Operation Van when running brake brake lining needs replacing, should use the warning device of optics or acoustics to driving
Driver's alarm on seat.
Define related vehicle brake clearance self-regulating device demand in 12676 4.2.1.11 of GB, friction plate, brake disc,
Brake drum associated wear detection method.
A kind of brake lining wear indicating device is disclosed in patent document 1 (CN 1187236A), disclosed in the patent
In technical solution, it is arranged to sense the magnetic regions in corresponding coding road using Hall element, every 1 ° of corner corresponds to one
Coding, but coding needs are sequentially read, and respectively encode corresponding Hall sensor and be while generate signal, and brake
Process rate is unstable, sometimes fast and sometimes slow, and signal is generated be easy to cause loss with reading delay, generates false alarm, and the program
Element is more, poor reliability, of high cost；
A kind of vehicle brake gap of band brake gasket wear warning device of patent document 2 (CN 2612835Y) is adjusted automatically
Whole device, described device are alarmed at preset maximum cam Work-corner, and the device is exposed outside, by environmental pollution
Seriously, it is easily blocked up by plugs such as mud, it is impossible to alarm, and the device is only capable of alarming to greatest wear position, it is impossible to braked
Journey detects and friction disc wear situation timely feedbacks；
Patent document 3 (103775546 A of CN) the utility model provides a kind of drum type brake friction pad wear and shows
Device, the device are by detecting camshaft degree, and camshaft degree is mechanically transferred to dial plate, is seen by dial plate
Friction disc wear situation is examined, which cannot carry out electronic warning.
Utility model content
The defects of in the presence of for the above-mentioned prior art, the utility model provide a kind of drum brake abrasion sensing
Device by detecting the resistance variations in braking process, realizes the detection of brake strip abrasion condition and brake state,
With reference to Figure of description, the technical solution of the utility model is as follows：
A kind of drum brake wear sensor, the sensor are made of stator and rotor, and the rotor is embedded in fixed
In son, rotor is relative to stator rotation；Resistance angle induction device and stationary brushes, the resistance angle are installed on stator
Sensing device is electrically connected with externally fed element, and the stationary brushes are connect with external signal acquisition elements signal；The rotor
It is made of rotor body, conducting ring and rotor brush, the rotor body is embedded in conducting ring, and the rotor brush is mounted on
On the circumference of conducting ring；The stationary brushes are connected with conducting ring circumferential end surfaces；The rotor brush and resistance angle sense
Device is answered to be in contact, is sequentially connected electrically resistance angle induction device, rotor brush, conducting ring and stationary brushes, and passes through and determines
Sub- brush exports the inductive signal of resistance angle induction device outward；The stator is fixed on the camshaft stand of brake
On, the rotor is keyed with camshaft, and with camshaft synchronous rotary.
A kind of drum brake wear sensor, wherein, the resistance angle induction device is resistance Array Substrate, described
Resistance Array Substrate is sector structure, and is distributed along stator in fan-shaped, and the fan-shaped distribution angle of the resistance Array Substrate is convex
The angle that rotor rotates is driven during wheel shaft work maximum angle；The resistance Array Substrate can power transformation by fan-shaped sheet type
Resistance and fan-shaped get an electric shock form, and fan-shaped get an electric shock is distributed along the fan shape of sheet type variable resistance, and fan-shaped institute of getting an electric shock is right
The resistance value answered changes in equal proportion.
A kind of drum brake wear sensor, wherein, the resistance angle induction device gets an electric shock for metal sector grid,
The metal sector grid gets an electric shock in fan-shaped distribution, and the fan-shaped distribution angle that the metal sector grid gets an electric shock works for camshaft
The angle that rotor is driven to rotate during maximum angle.
A kind of drum brake wear sensor, wherein, the resistance angle induction device is fan-shaped metal slip, described
Fan-shaped metal slip is distributed in fan-shaped, and the sector metal slip is a fan-shaped variable resistance, and resistance value is in consecutive variations；Institute
State angle of the fan-shaped distribution angle of fan-shaped metal slip by driving rotor rotation during camshaft work maximum angle.
A kind of drum brake wear sensor, wherein, on the end face of assembly both sides formed in stator and rotor,
The first sealing ring and the second sealing ring are separately installed with, prevents the resistance angle induction device between stator and rotor is exposed from causing
Pollution.
Compared with prior art, the beneficial effects of the utility model are：
1st, drum brake wear sensor described in the utility model uses resistance angle induction device, is braked by detecting
Resistance variations in the process can calculate the on-position exception of brake and the abrasion of brake strip in analysis braking process
Situation simultaneously timely feedbacks, and then matches EBS systems and realize braking force distribution control；
2nd, drum brake wear sensor described in the utility model is connected by rotor with drum brake camshaft, inspection
Camshaft degree variation is surveyed, when the camshaft degree that corner reaches brake calibration changes maximum value, carries out brake wear
Instruction alarm reminds driver's more renewal of facing renewal in time by vision or audible signal, avoids brake fade；
3rd, drum brake wear sensor element described in the utility model is less, using resistance angle induction device, inspection
It is reliable to survey result, and effectively reduces cost；
4th, drum brake both sides described in the utility model are sealed detecting element using sealing ring, prevent because exposed
Pollution causes to fail.
Description of the drawings
Fig. 1 uses schematic diagram for drum brake wear sensor described in the utility model assembling；
Fig. 2 a are drum brake wear sensor end structure illustration described in the utility model；
Fig. 2 b are drum brake wear sensor cross-sectional view described in the utility model；
Fig. 3 is the stator structure that resistance Array Substrate is installed in drum brake wear sensor described in the utility model
Schematic diagram；
Fig. 4 is rotor structure schematic diagram in drum brake wear sensor described in the utility model；
Fig. 5 is the stator of installation metal sector grid contact in drum brake wear sensor described in the utility model
Structure diagram；
Fig. 6 is the stator structure that fan-shaped metal slip is installed in drum brake wear sensor described in the utility model
Schematic diagram；
In figure：
1- sensors；2- camshaft stands；3- camshafts；4- bolts；5- spring brake cylinders；
11- stators；The first sealing rings of 12-；13- rotors；The second sealing rings of 14-；
111- sheet type variable resistances；112- sectors contact；113- stationary brushes；
112-1- metal sector grids contact；112-2- sector metal slips；
131- rotor brushes；132- conducting rings；133- rotor bodies.
Specific embodiment
For the technical solution of the utility model is expanded on further, with reference to Figure of description, the specific implementation of the utility model
Mode is as follows：
Embodiment one
The utility model embodiment one discloses a kind of drum brake wear sensor, as shown in Figure 1, the sensor
The stator of 1 outer ring is fixed on by bolt 4 on the camshaft stand 2 of drum brake, and the rotor of 1 inner ring of sensor passes through spline
Respective outer side edges are mounted on the camshaft 3 of drum brake, and the rotor of 1 inner ring of sensor passes through spline rotation synchronous with camshaft 3
Transhipment is dynamic.
As shown in figures 2 a and 2b, the sensor 1 is by stator 11, rotor 13, the first sealing ring 12 and the second sealing ring 14
Composition；The stator 11 is equipped with connecting hole, the connecting hole and 4 mating installation of bolt, realizes stator 11 and camshaft stand 2
It is fixedly connected；The stator 11 is cirque structure, and middle part is equipped with rotor mounting hole, and the rotor 13 is pacified embedded at the rotor
It fills in hole, and rotor 13 is rotated relative to stator 11, the rotor 13 is circular ring structure, is added on the inside circumference face of rotor 13
Work has spline structure, and rotor 13 is coaxially connected by the spline structure and camshaft 3；First sealing ring 12 and the second sealing ring 14
It is separately mounted on the end face of assembly both sides that stator 11 is formed with rotor 13, stator 11 and rotor 13 is coordinated into installation institute
The detection unit of composition is sealed, and to prevent from polluting because detection unit is exposed, even results in failure.
As shown in figure 3, being equipped with resistance Array Substrate on the stator 11, the resistance Array Substrate is sector structure,
And be distributed along the anchor ring of stator 11 into sector, fan-shaped distribution angle and the drum brake of the resistance Array Substrate were worn
The work maximum angle of camshaft 3 matches in journey, that is, drives the angle that rotor 3 rotates during the work maximum angle of camshaft 3
The as fan-shaped distribution angle of resistance Array Substrate；The resistance Array Substrate is by fan-shaped 111 He of sheet type variable resistance
Fan-shaped 112 compositions that get an electric shock on sheet type variable resistance 111, it is described fan-shaped to get an electric shock 112 along sheet type variable resistance
111 fan shape distribution, and the fan-shaped resistance value got an electric shock corresponding to 112 changes in equal proportion, the resistance Array Substrate with outside
Portion's power supply component electrical connection；A stationary brushes 113 are further fixed on stator 11；The stationary brushes and external electric signal
Acquisition elements signal connects；
As shown in figure 4, the rotor 13 is made of rotor body 133, conducting ring 132 and rotor brush 131；The rotor
Ontology 133 is embedded in conducting ring 132, and spline structure, the rotor electricity are machined on the inside circumference face of rotor body 133
Brush 131 is mounted on the circumference of conducting ring 132；The conducting ring 132 is connected with the stationary brushes 113 on stator；
The course of work of drum brake wear sensor is as follows described in the present embodiment：
Drum brake wear sensor energization work, resistance Array Substrate is powered in sensor 1；Drum brake is braked
In the course of work, the active force that spring brake cylinder 5 exports is converted to torque and is transferred to camshaft 3, convex under the action of torque
Wheel shaft 3 starts to rotate, and camshaft 3 drives rotor 13 to rotate, and during being rotated with rotor 13, rotor brush 131 will gradually
Fan-shaped electric shock 112 in contact stator 11 on resistance Array Substrate, rotor brush 131 are in contact with sector electric shock 112 and realize electricity
Conductance leads to, and electric signal will be transmitted to conducting ring 132 by rotor brush 131, conducting ring 132 by with the stationary brushes on stator
It connects, finally exports signal to external electrical signal collection element via stationary brushes 113.
In braking incipient stage and brake release stage, 1 inside of sensor will externally export break signal or resistance becomes
Change signal, according to the break signal of output or resistance variations signal, the electric signal of output is handled by electronic processors to be obtained
Brake bush abrasion condition information carries out braking force distribution control for matching EBS systems；
At the same time, the electric signal exported in real time by sensor 1 can distinguish whether drum brake works normally, makes
Whether dynamic device is normally carried out braking or releasing braking and whether brake clearance level is normal；When brake clearance is excessive, then cam
The operating angle of axis 3 will become larger, and then rotor brush 131 gets an electric shock 112 quantity with fan-shaped in contact with rotor motion process,
The quantity that normal brake application gap lower rotor part brush 131 moves contacted fan-shaped electric shock 112 can be more than；Conversely, rotor brush 131
With the quantity of the fan-shaped electric shock 112 in contact with rotor motion process, can be moved less than normal brake application gap lower rotor part brush 131
The quantity of fan-shaped electric shock 112 contacted；The electric signal that sensor 1 exports in real time will be driven by the sense of hearing or visual feedback in time
The person of sailing reminds the timely repair and maintenance of driver, avoids that major accident occurs；In addition, when brake strip wears up to limit position
When putting, the operating angle of camshaft 3 will be more than its maximum functional angle, and the motion range of rotor brush 131 will be more than electricity at this time
The distribution of Array Substrate is hindered, causes rotor brush 131 that can not touch fan-shaped electric shock 112,1 inside of sensor will place at this time
When off state, braking, breaking alarming is reminded driver by 1 circuit of sensor.
Embodiment two
The utility model embodiment two discloses a kind of drum brake wear sensor, as shown in Figure 1, the sensor
The stator of 1 outer ring is fixed on by bolt 4 on the camshaft stand 2 of drum brake, and the rotor of 1 inner ring of sensor passes through spline
Respective outer side edges are mounted on the camshaft 3 of drum brake, and the rotor of 1 inner ring of sensor passes through spline rotation synchronous with camshaft 3
Transhipment is dynamic.
As shown in figures 2 a and 2b, the sensor 1 is by stator 11, rotor 13, the first sealing ring 12 and the second sealing ring 14
Composition；The stator 11 is equipped with connecting hole, the connecting hole and 4 mating installation of bolt, realizes stator 11 and camshaft stand 2
It is fixedly connected；The stator 11 is cirque structure, and middle part is equipped with rotor mounting hole, and the rotor 13 is pacified embedded at the rotor
It fills in hole, and rotor 13 is rotated relative to stator 11, the rotor 13 is circular ring structure, is added on the inside circumference face of rotor 13
Work has spline structure, and rotor 13 is coaxially connected by the spline structure and camshaft 3；First sealing ring 12 and the second sealing ring 14
It is separately mounted on the end face of assembly both sides that stator 11 is formed with rotor 13, stator 11 and rotor 13 is coordinated into installation institute
The detection unit of composition is sealed, and to prevent from polluting because detection unit is exposed, even results in failure.
As shown in figure 5, being equipped with metal sector grid electric shock 112-1 on the stator 11, the metal sector grid touches
Electric 112-1 is distributed in fan-shaped, fan-shaped distribution angle and the drum brake wear process of the metal sector grid electric shock 112-1
The work maximum angle of middle camshaft 3 matches, that is, the angle that rotor 3 rotates is driven during the work maximum angle of camshaft 3 i.e.
Fan-shaped distribution angle for metal sector grid electric shock 112-1；The metal sector grid electric shock 112-1 and externally fed element
Electrical connection；A stationary brushes 113 are further fixed on stator 11；The stationary brushes are believed with external electrical signal collection element
Number connection；
As shown in figure 4, the rotor 13 is made of rotor body 133, conducting ring 132 and rotor brush 131；The rotor
Ontology 133 is embedded in conducting ring 132, and spline structure, the rotor electricity are machined on the inside circumference face of rotor body 133
Brush 131 is mounted on the circumference of conducting ring 132；The conducting ring 132 is connected with the stationary brushes 113 on stator；
The course of work of drum brake wear sensor is as follows described in the present embodiment：
Drum brake wear sensor energization work, metal sector grid electric shock 112-1 is powered in sensor 1；Drum-type
In the brake course of work, the active force that spring brake cylinder 5 exports is converted to torque and is transferred to camshaft 3, in torque
Under the action of camshaft 3 start to rotate, camshaft 3 drive rotor 13 rotate, with rotor 13 rotate during, rotor brush
131 will gradually contact metal sector grid electric shock 112-1 in stator 11, rotor brush 131 and metal sector grid electric shock 112-1
Be in contact and realize current lead-through, electric signal will be transmitted to conducting ring 132 by rotor brush 131, conducting ring 132 by with stator
On stationary brushes connect, finally signal is exported to external electrical signal collection element via stationary brushes 113.
In braking incipient stage and brake release stage, 1 inside of sensor will externally export break signal or resistance becomes
Change signal, according to the break signal of output or resistance variations signal, the electric signal of output is handled by electronic processors to be obtained
Brake bush abrasion condition information carries out braking force distribution control for matching EBS systems；
At the same time, the electric signal exported in real time by sensor 1 can distinguish whether drum brake works normally, makes
Whether dynamic device is normally carried out braking or releasing braking and whether brake clearance level is normal；When brake clearance is excessive, then cam
The operating angle of axis 3 will become larger, and then rotor brush 131 gets an electric shock with the metal sector grid in contact with rotor motion process
The quantity of 112-1 can be more than normal brake application gap lower rotor part brush 131 and move contacted metal sector grid electric shock 112-1
Quantity；Conversely, quantity of the rotor brush 131 with the metal sector grid electric shock 112-1 in contact with rotor motion process, meeting
The quantity of contacted metal sector grid electric shock 112-1 is moved less than normal brake application gap lower rotor part brush 131；Sensor 1
The electric signal exported in real time will be reminded the timely repair and maintenance of driver, keep away in time by the sense of hearing or visual feedback to driver
Exempt from that major accident occurs；In addition, when brake strip wears up to extreme position, the operating angle of camshaft 3 will be more than it most
Big operating angle, at this time the motion range of rotor brush 131 distribution more than metal sector grid electric shock 112-1 is caused
Make rotor brush 131 that can not touch metal sector grid electric shock 112-1, off state, system will be in inside sensor 1 at this time
When dynamic, breaking alarming is reminded driver by 1 circuit of sensor.
Embodiment three
The utility model embodiment three discloses a kind of drum brake wear sensor, as shown in Figure 1, the sensor
The stator of 1 outer ring is fixed on by bolt 4 on the camshaft stand 2 of drum brake, and the rotor of 1 inner ring of sensor passes through spline
Respective outer side edges are mounted on the camshaft 3 of drum brake, and the rotor of 1 inner ring of sensor passes through spline rotation synchronous with camshaft 3
Transhipment is dynamic.
As shown in figures 2 a and 2b, the sensor 1 is by stator 11, rotor 13, the first sealing ring 12 and the second sealing ring 14
Composition；The stator 11 is equipped with connecting hole, the connecting hole and 4 mating installation of bolt, realizes stator 11 and camshaft stand 2
It is fixedly connected；The stator 11 is cirque structure, and middle part is equipped with rotor mounting hole, and the rotor 13 is pacified embedded at the rotor
It fills in hole, and rotor 13 is rotated relative to stator 11, the rotor 13 is circular ring structure, is added on the inside circumference face of rotor 13
Work has spline structure, and rotor 13 is coaxially connected by the spline structure and camshaft 3；First sealing ring 12 and the second sealing ring 14
It is separately mounted on the end face of assembly both sides that stator 11 is formed with rotor 13, stator 11 and rotor 13 is coordinated into installation institute
The detection unit of composition is sealed, and to prevent from polluting because detection unit is exposed, even results in failure.
As shown in figure 5, being equipped with fan-shaped metal slip 112-2 on the stator 11, the sector metal slip 112-2 is in
Sector distribution, the sector metal slip 112-2 are a fan-shaped variable resistance, and resistance value is in consecutive variations；The fan-shaped gold
The fan-shaped distribution angle and the work maximum angle of camshaft 3 in drum brake wear process for belonging to slip ring 112-2 match,
The angle for rotor 13 being driven to rotate during maximum angle that is, camshaft 3 works is the fan-shaped distribution of fan-shaped metal slip 112-2
Angle；The sector metal slip 112-2 is electrically connected with externally fed element；A stationary brushes are further fixed on stator 11
113；The stationary brushes are connect with external electrical signal collection element signal；
As shown in figure 4, the rotor 13 is made of rotor body 133, conducting ring 132 and rotor brush 131；The rotor
Ontology 133 is embedded in conducting ring 132, and spline structure, the rotor electricity are machined on the inside circumference face of rotor body 133
Brush 131 is mounted on the circumference of conducting ring 132；The conducting ring 132 is connected with the stationary brushes 113 on stator；
The course of work of drum brake wear sensor is as follows described in the present embodiment：
Drum brake wear sensor energization work, fan-shaped metal slip 112-2 is powered in sensor 1；Drum brake
During device braking operation, the active force that spring brake cylinder 5 exports is converted to torque and is transferred to camshaft 3, in the work of torque
Starting to rotate with lower cam axis 3, camshaft 3 drives rotor 13 to rotate, during being rotated with rotor 13, rotor brush 131
It will be in contact with fan-shaped metal slip 112-2, and be moved along fan-shaped metal slip 112-2, rotor brush 131 and fan-shaped metal
Slip ring 112-2, which is in contact, realizes current lead-through, and electric signal will be transmitted to conducting ring 132, conducting ring 132 by rotor brush 131
By being connected with the stationary brushes on stator, finally signal is exported via stationary brushes 113 and is adopted to external electric signal
Collect element.
In braking incipient stage and brake release stage, 1 inside of sensor will externally export break signal or resistance becomes
Change signal, according to the break signal of output or resistance variations signal, the electric signal of output is handled by electronic processors to be obtained
Brake bush abrasion condition information carries out braking force distribution control for matching EBS systems；
At the same time, the electric signal exported in real time by sensor 1 can distinguish whether drum brake works normally, makes
Whether dynamic device is normally carried out braking or releasing braking and whether brake clearance level is normal；When brake clearance is excessive, then cam
During the operating angle of axis 3 will become larger, and then rotor brush 131 is with rotor motion, along the fan-shaped metal slip 112-2's
Movement angle will be greater than movement angle of the normal brake application gap lower rotor part brush 131 along fan-shaped metal slip 112-2；Conversely, turn
Sub- brush 131 will be less than normal brake application gap lower rotor part brush 131 along fan along the movement angle of the fan-shaped metal slip 112-2
The movement angle of shape metal slip 112-2；The electric signal that sensor 1 exports in real time will be driven by the sense of hearing or visual feedback in time
The person of sailing reminds the timely repair and maintenance of driver, avoids that major accident occurs；In addition, when brake strip wears up to limit position
When putting, the operating angle of camshaft 3 will be more than its maximum functional angle, and the motion range of rotor brush 131 will be more than fan at this time
The distribution of shape metal slip 112-2 causes rotor brush 131 that can not touch fan-shaped metal slip 112-2, senses at this time
Off state will be in inside device 1, during braking, breaking alarming is reminded driver by 1 circuit of sensor.
In embodiment two and embodiment three, metal sector grid contact 112-1 and fan-shaped metal slip 112-2 is respectively adopted
Instead of the resistance Array Substrate in embodiment one, by effective cost for reducing sensor.
Embodiment one compared with embodiment three, used by embodiment one its fan-shaped contact 112 of resistance Array Substrate pair
The resistance value answered changes in equal proportion, and resistance value is in discrete point-by-point variation, and the fan-shaped metal slip used in embodiment three
The resistance value of 112-2 is in consecutive variations, in comparison, its sector electric shock 112 of resistance Array Substrate used by embodiment one
Detection more stablizes, is accurate.
Claims (5)
1. a kind of drum brake wear sensor, it is characterised in that：
The sensor is made of stator (11) and rotor (13), and the rotor (13) is in stator (11), rotor (13)
It is rotated relative to stator (11)；
Resistance angle induction device and stationary brushes (113) be installed on stator (11), the resistance angle induction device with
Externally fed element is electrically connected, and the stationary brushes (113) connect with external signal acquisition elements signal；
The rotor (13) is made of rotor body (133), conducting ring (132) and rotor brush (131), the rotor body
(133) it is embedded in conducting ring (132), the rotor brush (131) is on the circumference of conducting ring (132)；
The stationary brushes (113) connect with conducting ring (132) circumferential end surfaces；
The rotor brush (113) is in contact with resistance angle induction device, makes resistance angle induction device, rotor brush
(113), conducting ring (132) and stationary brushes (113) are sequentially connected electrically, and are passed through stationary brushes (113) and sensed resistance angle
The inductive signal of device exports outward；
The stator (11) is fixed on the camshaft stand of brake, and the rotor (13) is keyed with camshaft, and with convex
Wheel shaft synchronous rotary.
2. a kind of drum brake wear sensor as described in claim 1, it is characterised in that：
The resistance angle induction device is resistance Array Substrate, and the resistance Array Substrate is sector structure, and along stator
(11) it is distributed in sector, the fan-shaped distribution angle of the resistance Array Substrate during camshaft (3) work maximum angle by driving
The angle of rotor (13) rotation；
The resistance Array Substrate is made of fan-shaped sheet type variable resistance (111) and fan-shaped get an electric shock (112), the sector
Electric shock (112) is distributed along the fan shape of sheet type variable resistance (111), and the resistance value corresponding to fan-shaped electric shock (112) is in
Equal proportion changes.
3. a kind of drum brake wear sensor as described in claim 1, it is characterised in that：
The resistance angle induction device gets an electric shock (112-1) for metal sector grid, and the metal sector grid gets an electric shock (112-1)
It is distributed in sector, when the fan-shaped distribution angle of the metal sector grid electric shock (112-1) is camshaft (3) work maximum angle
The angle of driven rotor (13) rotation.
4. a kind of drum brake wear sensor as described in claim 1, it is characterised in that：
The resistance angle induction device is fan-shaped metal slip (112-2), and the sector metal slip (112-2) is in sector point
Cloth, the sector metal slip (112-2) are a fan-shaped variable resistance, and resistance value is in consecutive variations；The sector metal is slided
Angle of the fan-shaped distribution angle of ring (112-2) by driving rotor (13) rotation during camshaft work maximum angle.
5. a kind of drum brake wear sensor as described in claim 1, it is characterised in that：
On the end face of assembly both sides formed in stator (11) and rotor (13), be separately installed with the first sealing ring (12) and
Second sealing ring (14) prevents the resistance angle induction device between stator (11) and rotor (13) is exposed from polluting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721635268.8U CN207583901U (en) | 2017-11-30 | 2017-11-30 | A kind of drum brake wear sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721635268.8U CN207583901U (en) | 2017-11-30 | 2017-11-30 | A kind of drum brake wear sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583901U true CN207583901U (en) | 2018-07-06 |
Family
ID=62734672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721635268.8U Withdrawn - After Issue CN207583901U (en) | 2017-11-30 | 2017-11-30 | A kind of drum brake wear sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583901U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816500A (en) * | 2017-11-30 | 2018-03-20 | 中国第汽车股份有限公司 | A kind of drum brake wear sensor |
-
2017
- 2017-11-30 CN CN201721635268.8U patent/CN207583901U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816500A (en) * | 2017-11-30 | 2018-03-20 | 中国第汽车股份有限公司 | A kind of drum brake wear sensor |
| CN107816500B (en) * | 2017-11-30 | 2024-06-04 | 中国第一汽车股份有限公司 | Drum brake wear sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102817779B (en) | System for actively monitoring wear on wind turbine brake pads and related methods | |
| US5975250A (en) | Apparatus and method for detecting the thickness of a brake lining | |
| US7114596B2 (en) | Brake shoe proximity sensor | |
| CN107816500A (en) | A kind of drum brake wear sensor | |
| CN105190077B (en) | Disk brake including air gap monitoring device and the method for monitoring air gap | |
| CN207583901U (en) | A kind of drum brake wear sensor | |
| CN105151939B (en) | A kind of method of elevator internal contracting brake abrasion monitoring | |
| CN107975555A (en) | A kind of brake friction plate abrasion degree detection device | |
| US20190234474A1 (en) | Electric Actuator for S-Cam Brake | |
| US20180031065A1 (en) | Electromechanical brake system and method | |
| CN113847368A (en) | Intelligent monitoring device and method for heavy truck disc brake | |
| CN2932349Y (en) | A vehicle-mounted motor vehicle braking performance tester | |
| US20220373050A1 (en) | System and method for monitoring wear of braking frictional pad of motor vehicle | |
| CN203717726U (en) | Brake assembly of tricycle | |
| CN101704364B (en) | Real-time monitoring and automatic regulating system of automotive brake clearance | |
| CN206634002U (en) | Vehicle and its brake and sensing device | |
| CN205086906U (en) | ABS anti -lock braking sensing device | |
| CN110469606B (en) | Drum type heavy piece abrasion monitoring sensor, alarm system and abrasion monitoring method thereof | |
| CN201520293U (en) | Automobile brake clearance real-time monitoring and automatic adjusting device | |
| CN203344930U (en) | Novel electronic brake pedal | |
| CN216131300U (en) | Disc brake capable of monitoring continuous abrasion of friction plate and brake disc | |
| CA2652618A1 (en) | Vehicle wheel sensor system and method | |
| CN205173229U (en) | Truck wheel hub bearing unit with sensor module | |
| CN213870860U (en) | Automobile brake pad wear sensor | |
| US20230010201A1 (en) | Camshaft rotation sensor mounting arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180706 Effective date of abandoning: 20240604 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180706 Effective date of abandoning: 20240604 |