CN110803141A - Take brake pedal of corner detection function - Google Patents
Take brake pedal of corner detection function Download PDFInfo
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- CN110803141A CN110803141A CN201910590144.XA CN201910590144A CN110803141A CN 110803141 A CN110803141 A CN 110803141A CN 201910590144 A CN201910590144 A CN 201910590144A CN 110803141 A CN110803141 A CN 110803141A
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- magnet
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- rotating shaft
- brake pedal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a brake pedal with a corner detection function, which comprises a pedal bracket, a pedal rotating shaft and a pedal arm, wherein one end of the pedal arm is fixed with the pedal rotating shaft, the pedal rotating shaft comprises a central shaft and a rotating shaft, the central shaft is fixed with the pedal bracket, and the rotating shaft is rotatably connected with the central shaft; the rotating shaft is provided with a magnet fixed with the rotating shaft, the central shaft is provided with a Hall sensor fixed with the central shaft, and the Hall sensor is arranged near the magnet. The invention provides a brake pedal with a corner detection function, which can directly detect the rotation angle of a pedal arm and has the advantages of simple structure, high detection precision and the like.
Description
Technical Field
The invention relates to the technical field of new energy automobile manufacturing, in particular to a brake pedal with a corner detection function.
Background
The brake pedal is, as its name implies, a power-limiting pedal, i.e., a pedal of a service brake (service brake), and the brake pedal is used for decelerating and stopping. It is one of five main control parts for automobile driving. The frequency of use is very high. How the driver controls directly affects the driving safety of the automobile. Traditional brake pedal pivot, because structural reason, only can regard as the rotating member of footboard arm, and new energy automobile generally faces the energy recuperation problem, needs the footboard to detect accurately and output the angle signal of footboard. The conventional brake pedal rotating shaft can only realize the rotation of a pedal arm due to the structure thereof. Pedal angle information is not available. Some new energy vehicles have adopted detection device to detect the footboard angle yet detect the structure complicacy, and detect again after changing the footboard angle through middle transform structure, detect the precision not high. Therefore, the brake pedal with the rotation angle detection function needs to be invented, the rotation angle of the pedal rotating shaft can be directly detected, and the detection precision is improved.
Chinese patent application publication No. CN106240536A, published as 2016, 12, 21, entitled "a brake pedal assembly", discloses a brake pedal assembly, which comprises a brake pedal mounting frame and a brake pedal arm, and further comprises a photoelectric encoder for detecting the rotation angle and speed of the brake pedal arm, wherein the photoelectric encoder is arranged on the brake pedal mounting frame, and the brake pedal arm is connected with the photoelectric encoder through a rocker mechanism. According to the brake pedal assembly, under the condition that the overall structure of the current brake pedal is not changed, the position and the speed of the brake pedal can be continuously detected through a photoelectric encoder in the brake pedal assembly, so that the current mechanical braking force and the brake urgency degree of a driver can be identified, the torque of motor regenerative braking can be accurately adjusted through the data, and the motor regenerative braking is adopted to the maximum extent under the condition that the braking performance is ensured, so that the braking energy is recovered to the maximum extent. However, the detection device designed in the patent is relatively complex in structure and needs to undergo intermediate conversion, and the above problem still exists.
Disclosure of Invention
In order to solve the problems that the angle detection structure of the brake pedal is relatively complex and the detection precision is not high due to the need of an intermediate conversion structure in the prior art, the invention provides the brake pedal with the corner detection function, which can directly detect the rotation angle of the pedal arm and has the advantages of simple structure, high detection precision and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a brake pedal with a corner detection function comprises a pedal support, a pedal rotating shaft and a pedal arm, wherein one end of the pedal arm is fixed with the pedal rotating shaft, the pedal rotating shaft comprises a central shaft and a rotating shaft, the central shaft is fixed with the pedal support, and the rotating shaft is rotatably connected with the central shaft; the rotating shaft is provided with a magnet fixed with the rotating shaft, the central shaft is provided with a Hall sensor fixed with the central shaft, and the Hall sensor is arranged near the magnet.
In the technical scheme, the hall sensor adopts an MLX90360 product of Michelia corporation, and can detect the change of a magnetic field, so that the relative rotation angle of the central shaft and the rotating shaft is detected. The Hall sensor is electrically connected with a controller of the whole vehicle. When a driver steps on the pedal arm, the pedal arm drives the rotating shaft to rotate, the central shaft is fixed, the shaft rotates and rotates relative to the central shaft at the moment, and the magnet in the rotating shaft rotates synchronously; the Hall sensor senses the magnetic pole change, generates an analog quantity signal according to the magnetic pole change and outputs the analog quantity signal to the vehicle control unit. In the technical scheme, the rotating shaft is positioned outside the central shaft and synchronously rotates along with the pedal arm, the angle measured by the Hall sensor is the rotating angle of the pedal arm, no intermediate conversion exists, and the measuring precision is more accurate than that of a measuring method after conversion.
Preferably, the rotating shaft is a hollow shaft, and the rotating sleeve is provided outside the central shaft. The rotating shaft is sleeved outside the central shaft, so that the whole structure is more compact.
Preferably, the rotating shaft includes a connection section and a detection section; the magnet is arranged on the inner wall of the detection section, and the pedal arm is fixed with the connecting section. The structure makes the magnet be located the detection section, not with outside contact, be difficult to damage, whole structure is compacter, reliable.
Preferably, the magnet comprises a first semi-circular magnet and a second semi-circular magnet, the first magnet and the second magnet form a circular magnet, and the circular magnet is sleeved outside the central shaft and fixed with the rotating shaft. The structure enables the magnets to be uniformly grouped outside the central shaft, provides a relatively stable magnetic field and is convenient for improving the detection precision of the Hall sensor.
Preferably, the inner arc surface of the first magnet is an S pole, and the outer arc surface of the first magnet is an N pole; the inner arc surface of the second magnet is an N pole, and the inner arc surface of the second magnet is an S pole. The magnet structure enables the magnet to provide the magnetic field intensity as large as possible at the central shaft, and the angle detection precision is improved conveniently.
Preferably, the number of the Hall sensors is 2, and the 2 Hall sensors are symmetrically distributed on two opposite sides of the magnet. The inclination appears when the magnet installation, and the rotation axis rotates, and the one end of magnet slope is close to hall sensor, can cause magnetic field intensity to increase, and this magnetic field intensity change is unpredictable in advance, and the magnetic field transform that the angle change brought under this magnetic field intensity and the ideal state superposes each other to lead to hall sensor measuring inaccurate. In the symmetrical distribution structure, when the inclined end of the magnet is close to one of the Hall sensors, the inclined end of the magnet is away from the other Hall sensor without fail, the magnetic field changes caused by the inclination of the magnet, which are sensed by the two Hall sensors, are enhanced and weakened, and the data of the two Hall sensors are subjected to average processing, so that the influence can be eliminated, and the angle measurement precision is improved.
Preferably, the central shaft is provided with a mounting through hole, the mounting through hole passes through the axis of the central shaft, and the Hall sensor is arranged in the mounting through hole. The installation through hole can install hall sensor, makes hall sensor's fixed knot construct more stable. Simultaneously, because the magnetic conductivity of installation through-hole department is different with the magnetic conductivity of center pin itself, and the installation through-hole passes through the center pin axis, when the rotation axis rotates promptly, because the existence of installation through-hole, the magnetic field intensity itself of installation through-hole department also has magnetic field variation, this magnetic field variation also only is linear relevant with turned angle, the holistic change of magnetic field intensity when can increase the rotation axis and rotate, magnetic field variation is more obvious, thereby be convenient for improve the change that hall sensor detected the magnetic field, make hall sensor's detection more accurate.
Preferably, the central shaft is provided with a positioning groove, the rotating shaft is provided with a positioning bulge, and the positioning bulge is in contact with the side wall of the positioning groove. The positioning groove positioning protrusion can provide positioning during installation, and accuracy of an initial position is guaranteed.
The invention has the beneficial effects that: (1) the rotation angle of the pedal rotating shaft is directly detected, and the detection precision is high; (2) the whole structure is simple and the installation is convenient; (3) the detection structure is reasonable in arrangement, and the detection precision of the rotation angle is further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a pedal spindle according to the present invention;
FIG. 3 is a schematic structural view of a pedal spindle in embodiment 2;
FIG. 4 is a schematic view of the structure of a magnet in example 2;
fig. 5 is a sectional view taken along line a-a in fig. 3.
In the figure: the pedal comprises a pedal support 1, a pedal rotating shaft 2, a central shaft 2.1, an installation through hole 2.1.1, a positioning groove 2.1.2, a rotating shaft 2.2, a connecting section 2.2.1, a detection section 2.2.2, a positioning bulge 2.2.3, a pedal arm 3, a magnet 4, a first magnet 4.1, a second magnet 4.2 and a Hall sensor 5.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and 2, a brake pedal with a rotation angle detection function includes a pedal bracket 1, a pedal spindle 2 and a pedal arm 3, wherein the pedal spindle 2 includes a central shaft 2.1 and a rotary shaft 2.2, the central shaft 2.1 is fixed with the pedal bracket 1, the rotary shaft 2.2 is a hollow shaft, and the rotary shaft 2.2 is sleeved outside the central shaft 2.1 and is rotatably connected with the central shaft 2.1; the rotating shaft 2.2 comprises a connecting section 2.2.1 and a detecting section 2.2.2; a magnet 4 is arranged on the rotating shaft 2.2, the magnet 4 is fixed on the inner wall of the detection section 2.2.2, one end of the pedal arm 3 is fixed with the connection section 2.2.1, a Hall sensor 5 is fixed on the central shaft 2.1, and the Hall sensor 5 is arranged near the magnet 4.
In the technical scheme, when a driver steps on the pedal arm 3, the pedal arm 3 drives the rotating shaft 2.2 to rotate, the central shaft 2.1 is fixed, the shaft rotates and rotates relative to the central shaft 2.1 at the moment, and the magnet 4 in the rotating shaft 2.2 rotates synchronously; the Hall sensor 5 senses the magnetic pole change, generates an analog quantity signal according to the magnetic pole change and outputs the analog quantity signal to the vehicle control unit. In the technical scheme, the rotating shaft 2.2 is positioned outside the central shaft 2.1 and synchronously rotates along with the pedal arm 3, the angle measured by the Hall sensor 5 is the rotating angle of the pedal arm 3, no intermediate conversion exists, and the measuring precision is more accurate than that of a measuring method after conversion.
Example 2:
as shown in fig. 3, 4 and 5, based on embodiment 1, the magnet 4 includes a first magnet 4.1 and a second magnet 4.2, the first magnet 4.1 and the second magnet 4.2 form a circular magnet 4, and the circular magnet 4 is sleeved outside the central shaft 2.1 and fixed to the rotating shaft 2.2; the inner arc surface of the first magnet 4.1 is an S pole, and the outer arc surface of the first magnet 4.1 is an N pole; the inner arc surface of the second magnet 4.2 is an N pole, and the inner arc surface of the second magnet 4.2 is an S pole; the central shaft 2.1 is provided with a positioning groove 2.1.2 and two mounting through holes 2.1.1, the two mounting through holes 2.1.1 are symmetrically distributed at two opposite sides of the magnet 4, and the mounting through holes 2.1.1 pass through the axis of the central shaft 2.1; the number of the Hall sensors 5 is 2, the Hall sensors 5 correspond to the mounting through holes 2.1.1 one by one, and the Hall sensors 5 are fixed in the mounting through holes 2.1.1; the rotating shaft 2.2 is provided with a positioning bulge 2.2.3, and the positioning bulge 2.2.3 is contacted with the side wall of the positioning groove 2.1.2.
In the above technical scheme, the accuracy of the hall sensor 5 for angle detection can be further improved.
The invention has the beneficial effects that: the rotation angle of the pedal rotating shaft 2 is directly detected, and the detection precision is high; the whole structure is simple and the installation is convenient; the detection structure is reasonable in arrangement, and the detection precision of the rotation angle is further improved.
Claims (8)
1. A brake pedal with a corner detection function comprises a pedal support, a pedal rotating shaft and a pedal arm, wherein one end of the pedal arm is fixed with the pedal rotating shaft; the rotating shaft is provided with a magnet fixed with the rotating shaft, the central shaft is provided with a Hall sensor fixed with the central shaft, and the Hall sensor is arranged near the magnet.
2. The brake pedal with the rotation angle detecting function according to claim 1, wherein the rotating shaft is a hollow shaft, and the rotating shaft is sleeved outside the central shaft.
3. The brake pedal with the rotation angle detection function according to claim 2, wherein the rotating shaft includes a connecting section and a detection section; the magnet is arranged on the inner wall of the detection section, and the pedal arm is fixed with the connecting section.
4. The brake pedal with the rotation angle detection function according to claim 1, wherein the magnet includes a first magnet and a second magnet, the first magnet and the second magnet form a circular magnet, and the circular magnet is sleeved outside the central shaft and fixed to the rotating shaft.
5. The brake pedal with the rotation angle detection function according to claim 4, wherein the inner arc surface of the first magnet is an S pole, and the outer arc surface of the first magnet is an N pole; the inner arc surface of the second magnet is an N pole, and the inner arc surface of the second magnet is an S pole.
6. The brake pedal with the rotation angle detecting function according to claim 1, 2, 3, 4 or 5, wherein the number of the Hall sensors is 2, and the 2 Hall sensors are symmetrically distributed on two opposite sides of the magnet.
7. The brake pedal with the rotation angle detecting function according to claim 1, 2, 3, 4 or 5, wherein the number of the hall sensors is 2, and the 2 hall sensors are symmetrically distributed on two opposite sides of the magnet.
8. The brake pedal with the rotation angle detecting function according to claim 1, 2, 3, 4 or 5, wherein the center shaft is provided with a positioning groove, the rotating shaft is provided with a positioning protrusion, and the positioning protrusion is in contact with a side wall of the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910590144.XA CN110803141A (en) | 2019-07-02 | 2019-07-02 | Take brake pedal of corner detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910590144.XA CN110803141A (en) | 2019-07-02 | 2019-07-02 | Take brake pedal of corner detection function |
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| Publication Number | Publication Date |
|---|---|
| CN110803141A true CN110803141A (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910590144.XA Pending CN110803141A (en) | 2019-07-02 | 2019-07-02 | Take brake pedal of corner detection function |
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| CN (1) | CN110803141A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539463A (en) * | 2009-04-01 | 2009-09-23 | 邱召运 | Hall difference equation force measuring method for symmetrical and complementary structure |
| CN201628538U (en) * | 2010-01-30 | 2010-11-10 | 林颖 | Non-contact rotation angle sensor |
| CN202071821U (en) * | 2010-09-16 | 2011-12-14 | 陆海涛 | Electric car pedal switch |
| CN204263945U (en) * | 2014-08-20 | 2015-04-15 | 合肥银鸿汽车配件有限公司 | A kind of mechanical electronic pedal assembly and apply its self-propelled vehicle |
| CN206678968U (en) * | 2017-04-12 | 2017-11-28 | 浙江银星汽车配件有限公司 | Auto pedal assembly |
| CN207496658U (en) * | 2017-11-24 | 2018-06-15 | 东风华神汽车有限公司 | A kind of brake pedal for improving vehicle braking resilience sensor signal reliability |
-
2019
- 2019-07-02 CN CN201910590144.XA patent/CN110803141A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101539463A (en) * | 2009-04-01 | 2009-09-23 | 邱召运 | Hall difference equation force measuring method for symmetrical and complementary structure |
| CN201628538U (en) * | 2010-01-30 | 2010-11-10 | 林颖 | Non-contact rotation angle sensor |
| CN202071821U (en) * | 2010-09-16 | 2011-12-14 | 陆海涛 | Electric car pedal switch |
| CN204263945U (en) * | 2014-08-20 | 2015-04-15 | 合肥银鸿汽车配件有限公司 | A kind of mechanical electronic pedal assembly and apply its self-propelled vehicle |
| CN206678968U (en) * | 2017-04-12 | 2017-11-28 | 浙江银星汽车配件有限公司 | Auto pedal assembly |
| CN207496658U (en) * | 2017-11-24 | 2018-06-15 | 东风华神汽车有限公司 | A kind of brake pedal for improving vehicle braking resilience sensor signal reliability |
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| CB02 | Change of applicant information |
Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Applicant after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Applicant before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200218 |
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| RJ01 | Rejection of invention patent application after publication |