CN111503193A - Variable voltage wear sensor - Google Patents
Variable voltage wear sensor Download PDFInfo
- Publication number
- CN111503193A CN111503193A CN202010297153.2A CN202010297153A CN111503193A CN 111503193 A CN111503193 A CN 111503193A CN 202010297153 A CN202010297153 A CN 202010297153A CN 111503193 A CN111503193 A CN 111503193A
- Authority
- CN
- China
- Prior art keywords
- sensor
- brake shoe
- wear sensor
- wear
- variable voltage
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- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
- F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
Abstract
The invention discloses a variable voltage abrasion sensor, belonging to the field of automobile sensors, and the variable voltage abrasion sensor comprises a brake shoe, the top of the brake shoe is fixedly provided with a friction plate, the middle of the top of the brake shoe is provided with an installation groove, a wear sensor is inserted in the mounting groove, the top of the wear sensor is sleeved with an elastic ratchet, the left side and the right side of the bottom of the elastic ratchet are contacted with the top of the brake shoe, the bottom of the abrasion sensor is sleeved with an elastic plate body which is connected with the abrasion sensor in a sliding way, the left side and the right side of the top of the elastic plate body are contacted with the bottom of the brake shoe, the bottom of the abrasion sensor is sleeved with a locking nut in threaded connection with the abrasion sensor, the top of lock nut and the bottom contact of elastic plate body, wear sensor's output electric connection has the detecting element. The problem of sensor installation insecure, very easily become flexible appears, and can not real-time supervision and limit warning, in time remind navigating mate is solved.
Description
Technical Field
The invention relates to the field of automobile sensors, in particular to a variable voltage wear sensor.
Background
The brake wear alarm sensor is adopted in the existing vehicle to realize the sensing of the thickness of the friction plate, the friction plate can be worn together with the brake wear alarm sensor after being worn to a certain degree, and the original lead loop in the brake wear alarm sensor is worn and broken, so that the voltage change is caused according to the different wear degrees, the alarm is given, and a driver and passengers are reminded to pay attention to timely replacement of the brake pad.
However, in the prior art, the thickness of the brake shoe fluctuates in the error allowable range in the casting process, and the fluctuation can cause the phenomenon that the installation of the brake variable voltage wear sensor fixed on the brake variable voltage wear sensor is not firm, so that the brake variable voltage wear sensor is easy to loosen, cannot monitor in real time and alarm in a limiting way, and can remind a driver in time.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a variable voltage wear sensor which has the advantages of firm installation, difficulty in loosening, real-time monitoring and limit alarming, and solves the problems that the sensor is not firm in installation, is easy to loosen, cannot perform real-time monitoring and limit alarming and can remind a driver in time.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A variable voltage wear sensor comprises a brake shoe, a friction plate is fixedly arranged on the top of the brake shoe, an installation groove is arranged in the middle of the top of the brake shoe, a wear sensor is inserted in the installation groove, the top of the abrasion sensor is sleeved with an elastic ratchet, the left side and the right side of the bottom of the elastic ratchet are in contact with the top of the brake shoe, the bottom of the abrasion sensor is sleeved with an elastic plate body which is connected with the abrasion sensor in a sliding way, the left side and the right side of the top of the elastic plate body are contacted with the bottom of the brake shoe, the bottom of the abrasion sensor is sleeved with a locking nut in threaded connection with the abrasion sensor, the top of the locking nut is contacted with the bottom of the elastic plate body, the output end electric connection of the abrasion sensor is provided with a detection unit, the output end telecommunication connection of the detection unit is provided with a control processing unit, and the output end telecommunication connection of the control processing unit is provided with an alarm unit.
Preferably, the wear sensor is including sensor main part, wearing and tearing portion and brake block warning response line, the sensor main part is located the inside of mounting groove, elasticity ratchet cup joints the top and the bottom at the sensor main part with the springboard body, wearing and tearing portion fixed connection is at the top of sensor main part, the brake block warning response line sets up in the inside of sensor main part, the brake block warning response line is buckled in the wearing and tearing portion, the one end that the sensor main part was kept away from to the brake block warning response line is in control processing unit fixed connection.
Preferably, the control processing unit comprises a controller and an operation module, the output end of the detection unit is in telecommunication connection with the input end of the controller, the output end of the controller is in telecommunication connection with the input end of the alarm unit, and the controller is in bidirectional connection with the operation module.
Preferably, the alarm unit comprises an L CD display screen and an audible and visual alarm module, and the input ends of the L CD display screen and the audible and visual alarm module are both in telecommunication connection with the output end of the controller.
Preferably, the top of the brake shoe is provided with uniformly distributed mounting holes, rivets are fixedly connected in the rivets, and the friction plate is mounted on the top of the brake shoe through the rivets.
Preferably, the bottom outside the sensor body is provided with an external thread, and the lock nut is in threaded connection with the sensor body through the external thread.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) according to the scheme, the abrasion sensor penetrates through the mounting groove, the mounting groove can enable the elastic ratchet to deform, the elastic ratchet is clamped at the top of the brake shoe through the rebound force of the elastic ratchet after the elastic ratchet penetrates through the mounting groove, the elastic plate body is made to be in contact with the bottom of the brake shoe by sliding, the locking nut is made to push the elastic plate body to deform and tightly adhere to the brake shoe, the abrasion sensor is fixed on the brake shoe through the elastic ratchet and the elastic plate body, the fixing is firm and not prone to falling off, the top of the abrasion sensor can be abraded after the friction plate is abraded in the braking process, the abrasion sensor can be whitened, the abrasion sensor can be conveniently known by a driver at any time by the brake pad alarm induction line, the controller can control the acousto-optic alarm module to give an alarm when the abrasion sensor is abraded in the abrasion process, the change of the voltage of the abrasion sensor can be collected by the detection unit and transmitted to the controller in real time, the abrasion amount is calculated according to the reading, the controller is transmitted to the L CD display screen to display the abrasion amount, the driver can conveniently know the abrasion degree at any time, the problem that the danger amount is not easy to be loosened in real time, and the driver.
(2) This scheme, at the brake in-process, wearing and tearing take place wearing and tearing gradually in wearing and tearing portion, after the top of wearing and tearing head wearing and tearing portion ground, continue wearing and tearing to brake block warning response line, brake block warning response line can make the voltage of self change at the wearing and tearing in-process, detects wearing and tearing and thickness and in time reports to the police by voltage change.
(3) According to the scheme, when the detection unit detects voltage changes and sends real-time readings to the controller, the controller calculates the abrasion loss according to the readings and transmits the abrasion loss readings to the L CD display screen to display the abrasion loss readings in real time, after the dangerous abrasion loss exceeds the set value, the controller controls the sound and light alarm module to give an alarm, and the operation module can realize the real-time thickness reading of the brake pad and the setting of the minimum thickness value of the brake pad.
(4) According to the scheme, the L CD display screen can receive information transmitted by the controller in real time, a driver can know the degree of wear at any time, and after the set dangerous wear amount is exceeded, the sound and light alarm module gives an alarm to achieve real-time monitoring and limit alarm.
(5) This scheme, the cooperation through rivet and mounting hole can make things convenient for the installation and the dismantlement of friction disc, convenient to use.
(6) This scheme, through the setting of external screw thread, makes things convenient for lock nut's installation to conveniently adjust lock nut and then compress tightly elastic plate body, make the installation firm.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a wear sensor of the present invention;
fig. 3 is a schematic diagram of the working principle of the alarm of the present invention.
The reference numbers in the figures illustrate:
1. the brake shoe comprises a brake shoe body, a friction plate, a mounting groove, a wear sensor, a sensor main body, a wear part, a brake pad alarm sensing wire, a brake disc alarm sensing wire, a brake ratchet, a brake disc alarm sensing wire, a brake ratchet elastic plate, a brake disc alarm sensing wire, a brake.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, a variable voltage wear sensor includes a brake shoe 1, a friction plate 2 is fixedly installed on the top of the brake shoe 1, an installation groove 3 is formed in the middle of the top of the brake shoe 1, a wear sensor 4 is inserted into the installation groove 3, an elastic ratchet 5 is sleeved on the top of the wear sensor 4, the left side and the right side of the bottom of the elastic ratchet 5 are in contact with the top of the brake shoe 1, the wear sensor 4 penetrates through the installation groove 3, the elastic ratchet 5 is deformed by the installation groove 3, the wear sensor 4 is clamped on the top of the brake shoe 1 by the resilience of the elastic ratchet 5 after penetrating through the installation groove 3, an elastic plate body 6 in sliding connection with the wear sensor 4 is sleeved on the bottom of the wear sensor 4, the left side and the right side of the top of the elastic plate body 6 are in contact with the bottom of the brake shoe 1, a locking, the top of lock nut 7 and the bottom contact of elastic plate body 6, slip elastic plate body 6 makes the top contact brake shoe 1's of elastic plate body 6 bottom, rotatory lock nut 7 again makes lock nut 7 promote elastic plate body 6 to produce deformation and pastes tight brake shoe 1, the output electric connection of wear sensor 4 has detecting element 8, detecting element 8 gathers the change of wear sensor 4 voltage and gives control processing unit 9 in real time, detecting element 8's output telecommunication connection has control processing unit 9, control processing unit 9 calculates the wearing and tearing volume according to the reading, and transmit to alarm unit 10 and show the wearing and tearing volume reading in real time, after exceeding the dangerous wearing and tearing volume that sets up, alarm unit 10 reports to the police and reminds the navigating mate to change. The output end of the control processing unit 9 is connected with an alarm unit 10 in a telecommunication way.
Furthermore, the wear sensor 4 comprises a sensor main body 41, a wear part 42 and a brake pad alarm sensing line 43, the sensor main body 41 is located inside the mounting groove 3, the elastic ratchet 5 and the elastic plate body 6 are sleeved on the top and the bottom of the sensor main body 41, the wear part 42 is fixedly connected on the top of the sensor main body 41, the brake pad alarm sensing line 43 is arranged inside the sensor main body 41, the brake pad alarm sensing line 43 is bent in the wear part 42, one end of the brake pad alarm sensing line 43, which is far away from the sensor main body 41, is fixedly connected with the control processing unit 9, during braking, the wear portion 42 gradually wears, and as the top of the wear head wear portion 42 wears away, continuing wearing and tearing to brake block warning response line 43, brake block warning response line 43 can make the voltage of self change at the wearing and tearing in-process, detects wearing and tearing and thickness and in time reports to the police by voltage change.
Further, the control processing unit 9 includes a controller 91 and an operation module 92, the output end of the detection unit 8 is in telecommunication connection with the input end of the controller 91, the output end of the alarm unit 10 of the controller 91 is in telecommunication connection with the input end of the alarm unit, the controller 91 is in bidirectional connection with the operation module 92, when the detection unit 8 detects voltage changes and sends real-time readings to the controller 91, the controller 91 calculates the wear loss according to the readings and transmits the wear loss to the L CD display screen 101 to display the wear loss readings in real time, when the set dangerous wear loss is exceeded, the controller 91 controls the audible and visual alarm module 102 to give an alarm, and the operation module 92 can realize real-time brake pad thickness reading and brake pad minimum thickness value setting.
Furthermore, the alarm unit 10 comprises an L CD display screen 101 and an audible and visual alarm module 102, wherein the input ends of the L CD display screen 101 and the audible and visual alarm module 102 are both in telecommunication connection with the output end of the controller 91, the L CD display screen 101 can receive information transmitted by the controller 91 in real time, so that a driver can know the degree of wear at any time, and when the set dangerous wear amount is exceeded, the audible and visual alarm module 102 gives an alarm to achieve real-time monitoring and limit alarm.
Further, evenly distributed's mounting hole 11 is seted up at the top of brake shoe 1, and fixedly connected with rivet 12 in the rivet 12, friction disc 2 pass through rivet 12 to be installed at the top of brake shoe 1, can make things convenient for the installation and the dismantlement of friction disc 2 through the cooperation of rivet 12 with mounting hole 11, convenient to use.
Further, the bottom outside the sensor main body 41 is provided with the external screw thread, and lock nut 7 passes through external screw thread and 41 threaded connection of sensor main body, through the setting of external screw thread, makes things convenient for lock nut 7's installation to conveniently adjust lock nut 7 and then compress tightly elastic plate body 6, make the installation firm.
The working principle is that when the automobile brake system is used, the wear sensor 4 penetrates through the mounting groove 3, the elastic ratchet 5 can be deformed by the mounting groove 3, the elastic ratchet 5 is clamped at the top of the brake shoe 1 by the aid of resilience of the elastic ratchet 5 after the automobile brake system penetrates through the mounting groove 3, the elastic plate 6 is slid to enable the top of the elastic plate 6 to be in contact with the bottom of the brake shoe 1, the locking nut 7 is rotated to enable the elastic plate 6 to be deformed to be tightly attached to the brake shoe 1, the wear sensor 4 is fixed on the brake shoe 1 through the elastic ratchet 5 and the elastic plate 6, the fixing is firm and difficult to fall off, during braking, when the friction plate 2 is worn, the top of the wear sensor 4 is worn, the brake pad alarm induction line 43 with the wear sensor 4 being whitened is worn, the voltage of the brake pad alarm induction line 43 changes during the wearing process, the detection unit 8 can collect the voltage change of the wear sensor 4 and transmit the voltage to the controller 91 in real time, the wear amount is calculated according to be transmitted to the L CD display screen 101 to display wear amount readings at any time, convenience is brought for drivers to know the wear degree, the real-time alarm module can monitor the driving safety alarm module, and the safety alarm module can be easily, and the driver can easily monitor the safety alarm module and can.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (6)
1. A variable voltage wear sensor comprising a brake shoe (1) characterized by: the brake shoe is characterized in that a friction plate (2) is fixedly mounted at the top of the brake shoe (1), a mounting groove (3) is formed in the middle of the top of the brake shoe (1), a wear sensor (4) is inserted into the mounting groove (3), an elastic ratchet (5) is sleeved at the top of the wear sensor (4), the left side and the right side of the bottom of the elastic ratchet (5) are in contact with the top of the brake shoe (1), an elastic plate body (6) in sliding connection with the wear sensor (4) is sleeved at the bottom of the wear sensor (4), the left side and the right side of the top of the elastic plate body (6) are in contact with the bottom of the brake shoe (1), a locking nut (7) in threaded connection with the wear sensor (4) is sleeved at the bottom of the wear sensor (4), the top of the locking nut (7) is in contact with the bottom of the elastic plate body (6), and, the output end of the detection unit (8) is in telecommunication connection with a control processing unit (9), and the output end of the control processing unit (9) is in telecommunication connection with an alarm unit (10).
2. A variable voltage wear sensor in accordance with claim 1, wherein: wear sensor (4) are including sensor main part (41), wearing and tearing portion (42) and brake block warning response line (43), sensor main part (41) are located the inside of mounting groove (3), elasticity ratchet (5) cup joint the top and the bottom at sensor main part (41) with springboard body (6), wearing and tearing portion (42) fixed connection is at the top of sensor main part (41), brake block warning response line (43) set up in the inside of sensor main part (41), brake block warning response line (43) buckle in wearing and tearing portion (42), the one end that sensor main part (41) was kept away from in brake block warning response line (43) is in control processing unit (9) fixed connection.
3. A variable voltage wear sensor in accordance with claim 1, wherein: the control processing unit (9) comprises a controller (91) and an operation module (92), the output end of the detection unit (8) is in telecommunication connection with the input end of the controller (91), the output end of the controller (91) is in telecommunication connection with the input end of the alarm unit (10), and the controller (91) is in bidirectional connection with the operation module (92).
4. The variable voltage wear sensor according to claim 3, wherein the alarm unit (10) comprises an L CD display screen (101) and an audible and visual alarm module (102), and the input ends of the L CD display screen (101) and the audible and visual alarm module (102) are both in telecommunication connection with the output end of the controller (91).
5. A variable voltage wear sensor in accordance with claim 1, wherein: the brake shoe is characterized in that the top of the brake shoe (1) is provided with uniformly distributed mounting holes (11), rivets (12) are fixedly connected in the rivets (12), and the friction plate (2) is mounted on the top of the brake shoe (1) through the rivets (12).
6. A variable voltage wear sensor in accordance with claim 2, wherein: the bottom outside the sensor main body (41) is provided with an external thread, and the locking nut (7) is in threaded connection with the sensor main body (41) through the external thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297153.2A CN111503193A (en) | 2020-04-15 | 2020-04-15 | Variable voltage wear sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010297153.2A CN111503193A (en) | 2020-04-15 | 2020-04-15 | Variable voltage wear sensor |
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| Publication Number | Publication Date |
|---|---|
| CN111503193A true CN111503193A (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010297153.2A Pending CN111503193A (en) | 2020-04-15 | 2020-04-15 | Variable voltage wear sensor |
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| CN (1) | CN111503193A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145598A (en) * | 2020-09-23 | 2020-12-29 | 中国汽车工程研究院股份有限公司 | Test method for verifying wear alarm of wear-off brake lining by using inertia rack |
| CN114876987A (en) * | 2022-06-15 | 2022-08-09 | 枣阳市华联摩擦材料有限公司 | Drum brake pad |
| WO2023183971A1 (en) * | 2022-03-30 | 2023-10-05 | K F Group Pty Ltd | Wear plate |
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| US4562421A (en) * | 1983-01-31 | 1985-12-31 | Duffy Dennis A | Brake wear sensor |
| ES2021855B3 (en) * | 1987-07-24 | 1991-11-16 | Bendix Europe Services Techniques S A | FRICTION ORGAN WEAR INDICATOR FOR AUTOMOBILE VEHICLE BRAKE AND FRICTION ORGAN SUPPLIED WITH SUCH INDICATOR. |
| US20070131491A1 (en) * | 2005-12-13 | 2007-06-14 | Arvinmeritor Technology, Llc | Brake lining wear sensor between lining blocks |
| CN207795929U (en) * | 2018-02-05 | 2018-08-31 | 临沂高新区鸿图电子有限公司 | Buckle and casing formula brake pad wear alarm inductive head |
| CN109941261A (en) * | 2019-04-08 | 2019-06-28 | 山东省梁山神力汽车配件有限公司 | The vehicle of vehicle brake pad wear monitoring and warning system and the application system |
| CN110905953A (en) * | 2019-11-27 | 2020-03-24 | 临沂高新区鸿图电子有限公司 | Elastic clamping piece and brake wear alarm sensor fixed by same |
| CN211082640U (en) * | 2019-11-25 | 2020-07-24 | 荆州市邦达汽车零部件有限公司 | Sensor for alarming abrasion of drum type automobile brake pad |
-
2020
- 2020-04-15 CN CN202010297153.2A patent/CN111503193A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562421A (en) * | 1983-01-31 | 1985-12-31 | Duffy Dennis A | Brake wear sensor |
| ES2021855B3 (en) * | 1987-07-24 | 1991-11-16 | Bendix Europe Services Techniques S A | FRICTION ORGAN WEAR INDICATOR FOR AUTOMOBILE VEHICLE BRAKE AND FRICTION ORGAN SUPPLIED WITH SUCH INDICATOR. |
| US20070131491A1 (en) * | 2005-12-13 | 2007-06-14 | Arvinmeritor Technology, Llc | Brake lining wear sensor between lining blocks |
| CN207795929U (en) * | 2018-02-05 | 2018-08-31 | 临沂高新区鸿图电子有限公司 | Buckle and casing formula brake pad wear alarm inductive head |
| CN109941261A (en) * | 2019-04-08 | 2019-06-28 | 山东省梁山神力汽车配件有限公司 | The vehicle of vehicle brake pad wear monitoring and warning system and the application system |
| CN211082640U (en) * | 2019-11-25 | 2020-07-24 | 荆州市邦达汽车零部件有限公司 | Sensor for alarming abrasion of drum type automobile brake pad |
| CN110905953A (en) * | 2019-11-27 | 2020-03-24 | 临沂高新区鸿图电子有限公司 | Elastic clamping piece and brake wear alarm sensor fixed by same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145598A (en) * | 2020-09-23 | 2020-12-29 | 中国汽车工程研究院股份有限公司 | Test method for verifying wear alarm of wear-off brake lining by using inertia rack |
| CN112145598B (en) * | 2020-09-23 | 2021-07-20 | 中国汽车工程研究院股份有限公司 | Test method for verifying wear alarm of wear-off brake lining by using inertia rack |
| WO2023183971A1 (en) * | 2022-03-30 | 2023-10-05 | K F Group Pty Ltd | Wear plate |
| CN114876987A (en) * | 2022-06-15 | 2022-08-09 | 枣阳市华联摩擦材料有限公司 | Drum brake pad |
| CN114876987B (en) * | 2022-06-15 | 2023-08-15 | 枣阳市华联摩擦材料有限公司 | Drum brake block |
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Application publication date: 20200807 |
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