CN114483839A - Built-in automatic wear sensor adjusting arm with structure capable of returning to zero position - Google Patents
Built-in automatic wear sensor adjusting arm with structure capable of returning to zero position Download PDFInfo
- Publication number
- CN114483839A CN114483839A CN202210081729.0A CN202210081729A CN114483839A CN 114483839 A CN114483839 A CN 114483839A CN 202210081729 A CN202210081729 A CN 202210081729A CN 114483839 A CN114483839 A CN 114483839A
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- China
- Prior art keywords
- mandrel
- automatic
- sensor
- adjusting arm
- adjusting mechanism
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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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 4
- 238000004382 potting Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 244000309464 bull Species 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 description 7
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000020347 spindle assembly Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention discloses a built-in automatic adjusting arm with a structure capable of returning to zero, wherein an adjusting arm body assembly comprises an automatic clearance adjusting mechanism and a turbine; the automatic gap adjusting mechanism is provided with a position scribing line; the mandrel component comprises magnetic steel and a mandrel; the magnetic steel is fixedly connected to the mandrel; the mandrel and the turbine are in gear transmission; the tail part of the mandrel is provided with an arrow mark corresponding to a position scribing line of the automatic gap adjusting mechanism; the turbine rotates to drive the mandrel to rotate, and magnetic field change is generated; the sensor assembly comprises a circuit board with a planar Hall chip and a wiring harness; when a circuit board with a planar Hall chip senses the change of a magnetic field, a voltage signal is transmitted to an ECU of the whole vehicle through a wire harness; and the ECU judges the wear condition of the friction plate according to the voltage signal value to give an alarm. During the process of dismounting the adjusting arm body assembly during the replacement of the friction plate, the mandrel is manually rotated, so that an arrow at the tail part of the mandrel is over against a 0-position scribed line on the automatic clearance adjusting mechanism, and the manual zero return function is completed.
Description
Technical Field
The invention relates to the technical field of advanced automobile safety, in particular to an automatic adjusting arm of a built-in abrasion sensor with a structure capable of returning to zero.
Background
When the brake lining of the service brake needs to be replaced, an optical or acoustic alarm device is adopted to give an alarm to a driver. The automatic adjusting arm with the built-in wear sensor is built in, but the adjusting arm is not provided with a return-to-zero structure, so that the service life of the automatic adjusting arm is extremely short, the adjusting arm is inconvenient to maintain and generally used once, and cannot be reused, or a company with special programming capability needs to be reprogrammed to be installed and used again, the built-in sensor does not have a zero setting mechanism and is extremely short in service life, a large amount of waste is caused, the utilization rate is low, the use cost is high in the second case, the automatic adjusting arm can only be used on some luxury vehicles, and the automatic adjusting arm cannot be popularized. The built-in automatic adjusting arm of the abrasion alarm with the structure capable of returning to the zero position saves space, has stable and reliable signals and has more advantages.
Disclosure of Invention
The invention aims to provide an automatic adjusting arm of a built-in abrasion sensor with a structure capable of returning to zero aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme: an automatic adjusting arm of a built-in abrasion sensor with a structure capable of returning to zero comprises an adjusting arm body assembly, a sensor assembly, a mandrel assembly, a return spring, a pinion and a bull gear;
the adjusting arm body assembly comprises an automatic clearance adjusting mechanism and a turbine; the turbine is connected with a large gear, and the large gear is meshed with the small gear; the automatic gap adjusting mechanism is provided with a position scribing line;
the mandrel component comprises magnetic steel and a mandrel; the magnetic steel is fixedly connected to the mandrel; the mandrel is in meshed connection transmission with the pinion; the tail part of the mandrel is provided with an arrow mark corresponding to a position scribing line of the automatic gap adjusting mechanism; the turbine rotates to drive the mandrel to rotate, and magnetic field change is generated;
the return spring is sleeved on the excircle of the mandrel, the upper end of the return spring is contacted with the step surface in the mandrel, and the lower end of the return spring is contacted with the bottom end surface of the step hole in the automatic clearance adjusting mechanism; when the mandrel is pulled down and is disengaged from the pinion gear, the return spring is compressed, and when the mandrel is reset, the return spring rebounds to reset the mandrel to be engaged with the pinion gear;
the sensor assembly is arranged on the automatic gap adjusting mechanism and comprises a circuit board with a planar Hall chip and a wiring harness; when a circuit board with a planar Hall chip senses the change of a magnetic field, a voltage signal is transmitted to an ECU of the whole vehicle through a wire harness; and the ECU judges the wear condition of the friction plate according to the voltage signal value to give an alarm.
In the process of dismounting the adjusting arm body assembly during the replacement of the friction plate, the pull-down mandrel assembly overcomes the elasticity of the return spring, so that the mandrel is rotated after the mandrel is separated from and engaged with the pinion, the arrow at the tail part of the mandrel is opposite to the position marking line on the automatic clearance adjusting mechanism, and the manual zero return function is completed.
Further, the sensor assembly further comprises a sensor cover plate and a sensor housing; the wiring harness penetrates into the round hole of the sensor shell and is connected to the circuit board, the circuit board is installed on the positioning column of the sensor shell through the two positioning holes and is fixed, the wiring harness in the circuit board and the sensor is encapsulated by the potting adhesive, the sensor cover plate is covered, and the periphery of the top surface of the sensor cover plate is encapsulated to the bevel edge by the potting adhesive to be waterproof.
Further, the top surface of the sensor assembly is flush with the automatic gap adjustment mechanism.
Further, the position of the Hall chip on the circuit board is coaxial with the mandrel.
Further, the sensor assembly and the mandrel assembly are installed on the adjusting arm body assembly and press-fit with the oil seal, and are blocked through the protective cover.
The invention has the beneficial effects that: the built-in automatic adjusting arm of the abrasion alarm with the structure capable of returning to zero can be repeatedly used, so that the use cost is reduced, the link of rewriting a program to the sensor is omitted, and the procedure of replacing a brake pad is simplified.
Drawings
FIG. 1 is a schematic view of an automatic adjusting arm according to the present invention.
FIG. 2 is a schematic view of a sensor assembly of the present invention.
FIG. 3 is a schematic view of a mandrel assembly.
Fig. 4 is a schematic view of the return spring installation.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the automatic adjusting arm with a built-in wear sensor having a structure capable of returning to zero provided by the invention comprises an adjusting arm body assembly 1, a sensor assembly 2, a mandrel assembly 3, an oil seal 4, a protective cover 5, a return spring 6, a pinion 7 and a bull gear 8;
the adjusting arm body assembly 1 comprises an automatic clearance adjusting mechanism 15 and a turbine 16; a large gear 8 is connected to the turbine 16, and the large gear 8 is meshed with the small gear 7; the automatic gap adjusting mechanism 15 is provided with a 0-position reticle;
the sensor component 2 is installed on the automatic clearance adjusting mechanism 15, and the top surface of the sensor component 2 is flush with the automatic clearance adjusting mechanism 15. The sensor assembly 2 comprises a sensor cover plate 9, a circuit board 10 with a planar Hall chip, a sensor shell 11 and a wiring harness 12; the wiring harness 12 penetrates into a round hole of the sensor shell 11 and is welded on the circuit board 10 through tin, the circuit board 10 is installed on a positioning column of the sensor shell 11 through two positioning holes and fixed, the wiring harness in the circuit board and the sensor is packaged through potting glue, the sensor cover plate 9 is covered, and the periphery of the top surface of the sensor cover plate 9 is sealed and waterproof through the potting glue from the bevel edge. When a circuit board 10 with a planar Hall chip senses the change of a magnetic field, a voltage signal is transmitted to an ECU of the whole vehicle through a wire harness 12; and the ECU judges the wear condition of the friction plate according to the voltage signal value to give an alarm.
The mandrel component 3 comprises magnetic steel 13 and a mandrel 14; the magnetic steel 13 and the mandrel 14 are bonded and fixed by structural adhesive. The mandrel 14 is in meshed connection transmission with the pinion 7; the position of the mandrel 14 is coaxial with that of the Hall chip on the circuit board 10; the tail part of the mandrel 14 is provided with an arrow mark corresponding to a 0-position scribed line of the automatic gap adjusting mechanism 15; the turbine 16 rotates to drive the mandrel 14 to rotate, and magnetic field change is generated;
the sensor assembly 2 and the mandrel assembly 3 are arranged on the adjusting arm body assembly 1, press-fit with the oil seal 4 and are blocked by the protective cover 5.
The return spring 6 is sleeved on the outer circle of the mandrel, the upper end of the return spring is in contact with the inner step surface of the mandrel, the lower end of the return spring is in contact with the bottom end surface of a related small step hole in the adjusting arm body, the return spring 6 is compressed when the mandrel is pulled down and is disengaged from the pinion and is not meshed, and the return spring 6 rebounds to enable the mandrel to be reset and meshed with the pinion 7 when the mandrel needs to be reset, as shown in fig. 4.
The return spring 6 is arranged in a corresponding hole in the adjusting arm body assembly 1, and the mandrel assembly 3 is inserted into the hole in the adjusting arm body assembly 1 and is coaxial with the return spring 6; the pinion 7 is sleeved on the mandrel component 3 and the adjusting arm body component 1, and the pinion 7 is coaxial with the mandrel component 3; the sensor assembly 2 is arranged at the corresponding position of the adjusting arm body assembly 1, so that the top surface of the sensor assembly 2 is flush with the adjusting arm body assembly 1, the position of the Hall chip is coaxial with the mandrel assembly 3, and finally the protective cover 5 is blocked to the corresponding position after the oil seal 4 is pressed in place.
The working principle of the invention is as follows:
along with the abrasion of the brake pad, the turbine 16 of the adjusting arm body component 1 and the adjusting arm shell can rotate, so that the large gear 8 riveted on the turbine 16 synchronously rotates, and meanwhile, the small gear 7 is driven to rotate; the spindle assembly 3 is driven to rotate integrally through the transmission of the inner small sharp teeth of the pinion 7 and the outer small sharp teeth on the spindle 14. The hall chip in the sensor assembly 2 senses the change of the magnetic field, so that a voltage signal of a customizable linear curve of 0.5-4.5V is output and transmitted to the automobile ECU through the wiring harness 12. The ECU can judge the abrasion condition of the friction plate according to the voltage signal value to give an alarm to remind a driver of replacing the friction plate in time, in the process of detaching the adjusting arm body assembly 1 during the period of replacing the friction plate, the protective cover 5 is simultaneously detached, the mandrel assembly 3 is pulled down manually by a tool to overcome the elasticity of the return spring 6, the outer small sharp tooth of the mandrel assembly 3 is separated from and engaged with the inner small sharp tooth of the pinion, then the mandrel assembly 3 is rotated, the arrow at the tail part of the mandrel assembly 3 is just opposite to the 0-bit scribed line on the adjusting arm body, the manual zero return function is completed, and therefore the output voltage signal value of the sensor returns to the zero position of the initial installation position, namely the position where the initial set value can be customized is 0.5V, and after the brake plate is replaced, the automatic adjusting arm after the zero position of the mandrel assembly 3 can be normally installed and can be normally used.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are within the spirit of the invention and the scope of the appended claims.
Claims (5)
1. A built-in automatic adjusting arm with a structure capable of returning to zero is characterized by comprising an adjusting arm body assembly (1), a sensor assembly (2), a mandrel assembly (3), a return spring (6), a pinion (7) and a bull gear (8);
the adjusting arm body assembly (1) comprises an automatic clearance adjusting mechanism (15) and a turbine (16); the turbine (16) is connected with a large gear (8), and the large gear (8) is meshed with the small gear (7); the automatic gap adjusting mechanism (15) is provided with a 0-position reticle;
the mandrel component (3) comprises magnetic steel (13) and a mandrel (14); the magnetic steel (13) is fixedly connected to the mandrel (14); the mandrel (14) is meshed with the pinion (7) for connection and transmission; the tail part of the mandrel (14) is provided with an arrow mark corresponding to a 0-position scribed line of the automatic gap adjusting mechanism (15); the turbine (16) rotates to drive the mandrel (14) to rotate, and magnetic field change is generated;
the return spring (6) is sleeved on the excircle of the mandrel, the upper end of the return spring is contacted with the step surface in the mandrel, and the lower end of the return spring is contacted with the bottom end surface of the step hole in the automatic clearance adjusting mechanism (15); when the mandrel (14) is pulled down and is disengaged from the pinion (7) and is not meshed with the pinion (7), the return spring (6) is compressed, and when the mandrel (14) is reset, the return spring (6) rebounds to reset the mandrel (14) to be meshed with the pinion (7);
the sensor assembly (2) is arranged on the automatic gap adjusting mechanism (15) and comprises a circuit board (10) with a planar Hall chip and a wiring harness (12); when a circuit board (10) with a planar Hall chip senses the change of a magnetic field, a voltage signal is transmitted to an ECU of the whole vehicle through a wiring harness (12); and the ECU judges the wear condition of the friction plate according to the voltage signal value to give an alarm.
In the process of detaching the adjusting arm body assembly (1) during the replacement of the friction plate, the pull-down mandrel assembly (3) overcomes the elastic force of the return spring (6), so that the mandrel (14) is rotated after the mandrel (14) is disengaged from the pinion (7), an arrow at the tail part of the mandrel (14) is opposite to a 0-position marking line on the automatic clearance adjusting mechanism (15), and the manual zero returning function is completed.
2. The built-in wear sensor automatic adjusting arm with the zero-returning structure is characterized in that the sensor assembly (2) further comprises a sensor cover plate (9) and a sensor shell (11); the wiring harness (12) penetrates into a round hole of the sensor shell (11) and is connected to the circuit board (10), the circuit board (10) is installed on a positioning column of the sensor shell (11) through two positioning holes and fixed, the wiring harness in the circuit board and the sensor is encapsulated by using potting adhesive, the sensor cover plate (9) is covered, and the periphery of the top surface of the sensor cover plate (9) is encapsulated and waterproof by using the potting adhesive from the bevel edge.
3. The built-in wear sensor automatic adjusting arm with the zero-returning structure is characterized in that the top surface of the sensor component (2) is flush with the automatic clearance adjusting mechanism (15).
4. The built-in automatic wear sensor adjusting arm with the structure capable of returning to zero position as claimed in claim 1, characterized in that the position of the Hall chip on the circuit board (10) is coaxial with the mandrel (14).
5. The built-in automatic adjusting arm with the structure capable of returning to zero position as claimed in claim 1, characterized in that the sensor assembly (2) and the mandrel assembly (3) are arranged on the adjusting arm body assembly (1) and press-fitted with the oil seal (4) and blocked by the protective cover (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210081729.0A CN114483839B (en) | 2022-01-24 | 2022-01-24 | Built-in wear sensor automatic adjusting arm with zero-return structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210081729.0A CN114483839B (en) | 2022-01-24 | 2022-01-24 | Built-in wear sensor automatic adjusting arm with zero-return structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483839A true CN114483839A (en) | 2022-05-13 |
| CN114483839B CN114483839B (en) | 2023-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210081729.0A Active CN114483839B (en) | 2022-01-24 | 2022-01-24 | Built-in wear sensor automatic adjusting arm with zero-return structure |
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| CN (1) | CN114483839B (en) |
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| CN208900591U (en) * | 2018-10-20 | 2019-05-24 | 绍兴驰达汽车配件制造有限公司 | Arm for automatically regulating clearance of brake with built-in brake pad wear instruction function |
| CN109882532A (en) * | 2019-03-01 | 2019-06-14 | 一汽解放汽车有限公司 | A kind of brake assembly with corner-type Brake shoe lining wear abrasion alarming device |
| CN109944888A (en) * | 2019-01-25 | 2019-06-28 | 倪世荣 | Self-monitoring arm for adjusting automobile brake clearance automatically |
| CN210218508U (en) * | 2019-06-21 | 2020-03-31 | 绍兴铁安汽配制造有限公司 | Brake lining wear alarm device and automatic adjusting arm |
| CN211893184U (en) * | 2020-01-03 | 2020-11-10 | 温州瑞立科密汽车电子有限公司 | Control system with retarder magnetic gap alarm |
| KR20210025278A (en) * | 2019-08-27 | 2021-03-09 | 현대모비스 주식회사 | Apparatus for monitoring ware state of brake pad |
-
2022
- 2022-01-24 CN CN202210081729.0A patent/CN114483839B/en active Active
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|---|---|---|---|---|
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| GB9602438D0 (en) * | 1996-02-07 | 1996-04-03 | Lucas Ind Plc | Brake condition monitoring means |
| WO1997029297A1 (en) * | 1996-02-07 | 1997-08-14 | Lucas Industries Public Limited Company | Brake wear sensor |
| GB9823199D0 (en) * | 1998-10-24 | 1998-12-16 | Lucas Ind Plc | Vehicle brake having brake de-adjust |
| EP1132655A1 (en) * | 2000-03-10 | 2001-09-12 | Niles Parts Co., Ltd. | Inhibitor switch for automatic transmission |
| SE0301727D0 (en) * | 2003-06-13 | 2003-06-13 | Haldex Brake Prod Ab | Sensor system |
| WO2007140985A1 (en) * | 2006-06-07 | 2007-12-13 | Preh Gmbh | Improved brake lining wear sensor |
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| CN109139751A (en) * | 2018-10-20 | 2019-01-04 | 绍兴驰达汽车配件制造有限公司 | Arm for automatically regulating clearance of brake with built-in brake pad wear instruction function |
| CN208900591U (en) * | 2018-10-20 | 2019-05-24 | 绍兴驰达汽车配件制造有限公司 | Arm for automatically regulating clearance of brake with built-in brake pad wear instruction function |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114483839B (en) | 2023-07-07 |
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Denomination of invention: A built-in wear sensor automatic adjustment arm with a returnable zero position structure Effective date of registration: 20231229 Granted publication date: 20230707 Pledgee: Zhejiang Juzhou Commercial Bank Co.,Ltd. Wenzhou Ouhai Branch Pledgor: WENZHOU RUILI KORMEE AUTOMOTIVE ELECTRONICS CO.,LTD. Registration number: Y2023980074178 |