CN114483839B - Built-in wear sensor automatic adjusting arm with zero-return structure - Google Patents
Built-in wear sensor automatic adjusting arm with zero-return structure Download PDFInfo
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- CN114483839B CN114483839B CN202210081729.0A CN202210081729A CN114483839B CN 114483839 B CN114483839 B CN 114483839B CN 202210081729 A CN202210081729 A CN 202210081729A CN 114483839 B CN114483839 B CN 114483839B
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- mandrel
- sensor
- assembly
- automatic
- adjusting arm
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- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000008859 change Effects 0.000 claims abstract description 10
- 238000005299 abrasion Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 239000000565 sealant Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000020347 spindle assembly Effects 0.000 claims description 4
- 238000010586 diagram Methods 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
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 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
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- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses an automatic adjusting arm with a zero-return structure for a built-in abrasion sensor, wherein an adjusting arm body assembly comprises an automatic clearance adjusting mechanism and a turbine; the automatic clearance adjusting mechanism is provided with a position scribing line; the mandrel assembly comprises magnetic steel and a mandrel; the magnetic steel is fixedly connected to the mandrel; the mandrel and the turbine are driven by a gear; the tail part of the mandrel is provided with an arrow mark which corresponds to a position scribing line of the automatic clearance adjusting mechanism; the turbine rotates to drive the mandrel to rotate, so that magnetic field change is generated; the sensor assembly comprises a circuit board with a planar Hall chip and a wire harness; when a circuit board with a planar Hall chip senses magnetic field change, a voltage signal is transmitted to the whole vehicle ECU through a wire harness; and the ECU judges the abrasion 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 during the process of replacing the friction plate, the mandrel is manually rotated, so that an arrow at the tail of the mandrel is opposite to a 0-bit line on the automatic clearance adjusting mechanism, and the manual zeroing function is completed.
Description
Technical Field
The invention relates to the technical field of advanced automobile safety, in particular to an automatic adjusting arm with a zero-return structure for a built-in abrasion sensor.
Background
And when the brake linings of the service brakes need to be replaced, an optical or acoustic alarm device is adopted to alarm a driver. There is an automatic adjusting arm with built-in wear sensor, the sensor is built-in, but has no zero return structure, so that the service life is very short, the maintenance of the adjusting arm is very inconvenient, the adjusting arm is generally one-time and cannot be reused, or the adjusting arm is required to be reprogrammed and reinstalled for use by a company with programming capability, the first condition is that the built-in sensor has no zero return mechanism and the service life is very short, so that a great amount of waste is caused, the use rate is not high, the second condition is that the using cost is very high, and the adjusting arm can only be used on some luxury vehicles and cannot be popularized. The invention has the advantages of space saving, stable and reliable signal and better advantages.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides an automatic adjusting arm with a built-in abrasion sensor capable of returning to a zero position structure.
The aim of the invention is realized by the following technical scheme: an automatic adjusting arm of a built-in wear sensor with a zeroable structure comprises an adjusting arm body assembly, a sensor assembly, a mandrel assembly, a return spring, a pinion and a large 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 clearance adjusting mechanism is provided with a position scribing line;
the mandrel assembly 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 which corresponds to a position scribing line of the automatic clearance adjusting mechanism; the turbine rotates to drive the mandrel to rotate, so that magnetic field change is generated;
the return spring is sleeved on the outer circle of the mandrel, the upper end of the return spring is contacted with the inner step surface of the mandrel, and the lower end of the return spring is contacted with the bottom end surface of the step hole on the automatic clearance adjusting mechanism; the return spring compresses when the mandrel is pulled downwards and is disengaged from the pinion, and the return spring rebounds to enable the mandrel to reset and be engaged with the pinion when the mandrel is to reset;
the sensor assembly is arranged on the automatic gap adjusting mechanism and comprises a circuit board with a planar Hall chip and a wire harness; when a circuit board with a planar Hall chip senses magnetic field change, a voltage signal is transmitted to the whole vehicle ECU through a wire harness; and the ECU judges the abrasion 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 during the process of replacing the friction plate, the mandrel assembly is pulled downwards to overcome the elasticity of the return spring, so that the mandrel is rotated after being clutched with the pinion, and an arrow at the tail part of the mandrel is opposite to a position scribing line on the automatic clearance adjusting mechanism, and the manual zero returning function is completed.
Further, the sensor assembly further comprises a sensor cover plate and a sensor housing; the wire harness penetrates into a round hole of the sensor shell and is connected to the circuit board, the circuit board is installed on a positioning column of the sensor shell through the two positioning holes to be fixed, the circuit board and the wire harness in the sensor are packaged by pouring sealant, the sensor cover plate is covered, and the periphery of the top surface of the sensor cover plate to the bevel edge is packaged by the pouring sealant to be waterproof.
Further, the top surface of the sensor assembly is flush with the automatic gap adjustment mechanism.
Further, the Hall chip on the circuit board is coaxial with the mandrel.
Further, the sensor assembly and the mandrel assembly are mounted on the adjusting arm body assembly, press-fit with the oil seal, and blocked by the protective cover.
The invention has the beneficial effects that: the automatic adjusting arm with the built-in wear alarm with the zeroing structure can be reused, so that the use cost is reduced, the step of re-programming a sensor is omitted, and the process of replacing a brake pad is simplified.
Drawings
FIG. 1 is a schematic view of the structure of the automatic adjusting arm of the present invention.
FIG. 2 is a schematic diagram of a sensor assembly according to the present invention.
Fig. 3 is a schematic diagram of a mandrel assembly.
FIG. 4 is a schematic view of a return spring installation.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the drawings.
As shown in fig. 1, the invention provides an automatic adjusting arm with a built-in abrasion sensor capable of returning to a zero position structure, which 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 large 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 clearance adjusting mechanism 15 is provided with a 0-bit scribing line;
the sensor assembly 2 is mounted on the automatic gap adjustment mechanism 15, and the top surface of the sensor assembly 2 is flush with the automatic gap adjustment mechanism 15. The sensor assembly 2 comprises a sensor cover plate 9, a circuit board 10 with a planar Hall chip, a sensor housing 11 and a wire harness 12; the wire harness 12 penetrates into a round hole of the sensor housing 11 and is welded on the circuit board 10 by tin, the circuit board 10 is installed on a positioning column of the sensor housing 11 through two positioning holes to be fixed, the circuit board and the wire harness in the sensor are packaged by pouring sealant, the sensor cover plate 9 is covered, and the periphery of the top surface of the sensor cover plate 9 to the bevel edge is packaged by the pouring sealant to be waterproof. When the circuit board 10 with the planar Hall chip senses the magnetic field change, a voltage signal is transmitted to the whole vehicle ECU through the wire harness 12; and the ECU judges the abrasion condition of the friction plate according to the voltage signal value to give an alarm.
The mandrel assembly 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 mandrel 14 is coaxial with the Hall chip on the circuit board 10; the tail part of the mandrel 14 is provided with an arrow mark which corresponds to a 0-bit scribing line of the automatic clearance adjustment mechanism 15; the turbine 16 rotates to drive the mandrel 14 to rotate, and magnetic field changes are generated;
the sensor assembly 2 and the spindle assembly 3 are mounted on the adjustment arm body assembly 1 and press-fit with the oil seal 4 and 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 contacted with the inner step surface of the mandrel, the lower end of the return spring is contacted with the bottom end surface of a relevant small step hole on the adjusting arm body, the return spring 6 is compressed under the condition that the mandrel is pulled down to be disengaged from the pinion and is not meshed with the pinion, and the return spring 6 rebounds to enable the mandrel to be reset to be meshed with the pinion 7 under the condition that the mandrel is 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 of the adjusting arm body assembly 1 and is coaxial with the return spring 6; the pinion 7 is sleeved on the mandrel assembly 3 and the adjusting arm body assembly 1, and the pinion 7 is coaxial with the mandrel assembly 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 Hall chip is coaxial with the spindle assembly 3, then the oil seal 4 is pressed in place, and finally the protective cover 5 is blocked at the corresponding position.
The working principle of the invention is as follows:
with the abrasion of the brake pad, rotation can be generated between the turbine 16 of the adjusting arm body assembly 1 and the adjusting arm shell, 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 integrally rotate by 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 magnetic field change, so that a voltage signal of 0.5-4.5V which can customize a linear curve is output and transmitted to the automobile ECU through the wire harness 12. The ECU can judge the wearing and tearing condition of friction disc and report to the police according to the voltage signal value, remind the driver to in time change the friction disc, in the process of removing adjustment arm body subassembly 1 during the change friction disc, take off protection casing 5 simultaneously, pull down behind the elasticity of spindle unit 3 overcoming return spring 6 with the manual pull down of instrument, make spindle unit 3 rotate spindle unit 3 again after the separation and reunion of outer little sharp tooth of spindle unit 3 and the little sharp tooth in the pinion, the arrow at spindle unit 3 afterbody just right adjusts the 0 bit line on the arm body, accomplish manual zero return function, thereby make the output voltage signal value of sensor return to the position zero bit of initial dress position, namely initial setting value 0.5V customizable position again, after the brake block is changed, as long as the automatic adjustment arm after adjusting the zero bit with spindle unit 3 normal installation just can normal use.
The above-described embodiments are intended to illustrate the present invention, not to limit it, and any modifications and variations made thereto are within the spirit of the invention and the scope of the appended claims.
Claims (4)
1. An automatic adjusting arm with a zero-returning structure for a built-in wear sensor 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 large 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 clearance adjusting mechanism (15) is provided with a 0-bit scribing line;
the mandrel assembly (3) comprises magnetic steel (13) and a mandrel (14); the magnetic steel (13) is fixedly connected to the mandrel (14); the mandrel (14) is in meshed connection transmission with the pinion (7); the tail part of the mandrel (14) is provided with an arrow mark which corresponds to a 0-bit scribing line of the automatic clearance adjusting mechanism (15); the turbine (16) rotates to drive the mandrel (14) to rotate, so that magnetic field change is generated;
the return spring (6) is sleeved on the outer circle of the mandrel, the upper end of the return spring is contacted with the inner step surface of the mandrel, and the lower end of the return spring is contacted with the bottom end surface of the step hole on the automatic clearance adjusting mechanism (15); the return spring (6) is compressed when the mandrel (14) is pulled downwards and is disengaged from the pinion (7), and the return spring (6) rebounds to enable the mandrel (14) to be in meshed engagement with the pinion (7) when the mandrel (14) is to be reset;
the sensor assembly (2) is arranged on the automatic clearance adjusting mechanism (15) and comprises a circuit board (10) with a planar Hall chip, a wire harness (12), 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 to be fixed, the circuit board and the wiring harness in the sensor are packaged through pouring sealant, the sensor cover plate (9) is covered, the periphery of the top surface of the sensor cover plate (9) to the bevel edge is packaged with the pouring sealant to be waterproof, and when the circuit board (10) with a planar Hall chip senses magnetic field change, a voltage signal is transmitted to the whole vehicle ECU through the wiring harness (12); the ECU judges the abrasion 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 process of replacing the friction plate, the mandrel assembly (3) is pulled down to overcome the elasticity of the return spring (6), so that the mandrel (14) is rotated after being clutched with the pinion (7), and an arrow at the tail part of the mandrel (14) is opposite to a 0-bit line on the automatic clearance adjusting mechanism (15), thereby completing the manual zeroing function.
2. An automatic adjustment arm for a built-in wear sensor with a return-to-zero configuration according to claim 1, characterized in that the top surface of the sensor assembly (2) is flush with the automatic gap adjustment mechanism (15).
3. An automatic adjusting arm for built-in wear sensor with return-to-zero structure according to claim 1, characterized in that the hall chip position on the circuit board (10) is coaxial with the spindle (14).
4. An automatic adjusting arm for built-in wear sensor with zero-returning structure according to claim 1, characterized in that the sensor assembly (2) and the spindle assembly (3) are mounted on the adjusting arm body assembly (1) and press-fit 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 CN114483839A (en) | 2022-05-13 |
| CN114483839B true 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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Also Published As
| Publication number | Publication date |
|---|---|
| CN114483839A (en) | 2022-05-13 |
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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 |