CN114435319A - Novel detect footboard position device - Google Patents
Novel detect footboard position device Download PDFInfo
- Publication number
- CN114435319A CN114435319A CN202210161881.XA CN202210161881A CN114435319A CN 114435319 A CN114435319 A CN 114435319A CN 202210161881 A CN202210161881 A CN 202210161881A CN 114435319 A CN114435319 A CN 114435319A
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- CN
- China
- Prior art keywords
- main cylinder
- push rod
- piston
- circuit board
- cylinder push
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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.)
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Classifications
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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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- 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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Elements And Transmission Devices (AREA)
Abstract
The invention discloses a novel device for detecting the position of a pedal, relates to the technical field of vehicle braking devices, and solves the problems that in the prior art, an angle sensor has high requirements on a brake pedal and the angle sensor, the arrangement mode of a magnet and the follow-up connection mode of a main cylinder push rod are complex in structure and the like. The brake pedal device comprises a main cylinder shell and a main cylinder push rod, wherein a first piston is arranged in the main cylinder shell, one end of the main cylinder push rod is connected to a brake pedal, the other end of the main cylinder push rod is connected to the first piston, and the first piston is pushed forwards in the main cylinder shell through the main cylinder push rod when the brake pedal is stepped; a mounting hole is formed in one end, away from the main cylinder push rod, of the first piston, and a plurality of magnet blocks are mounted in the mounting hole; the main cylinder shell is also connected with a pedal position sensor for sensing the position movement of the magnet. The structure design is simplified, a set of follow-up mechanism is omitted in the inner space, the space is optimized, the total amount and the volume of products can be reduced, and the signal stability is strong.
Description
Technical Field
The invention relates to the technical field of vehicle braking devices, in particular to a novel device for detecting the position of a pedal.
Background
According to the traditional fuel vehicle, a driver steps on a brake pedal, a master cylinder piston is pushed by a force method of the driver stepping on the brake pedal through a vacuum booster, brake oil pressure in the braking process of the vehicle is generated, and the braking of the vehicle is realized.
With the development of science and technology, new brake actuators such as an iBooster and a One-Box are adopted for a new energy automobile to pressurize a master cylinder, whether a driver steps on a brake pedal or not needs to be judged, and the depth of the driver stepping on the brake pedal needs to be judged to identify the brake intention of the driver, so that good riding comfort is provided.
The existing device for detecting the pedal position in the automobile brake product has various modes;
the first type is an angle sensor which is arranged at a brake pedal, and a signal acquired by the angle sensor on the brake pedal is used as the output of the identification of the braking intention of a driver, the mode has high requirements on the brake pedal and the angle sensor and needs severe assembly requirements, the pedal and the angle sensor need to be matched again after the vehicle type is replaced, different vehicle types in the later period need to be calibrated one by one, the workload is high, and the adaptability is poor;
the other is mounted on a master cylinder push rod portion, recognizing the intention of the driver by recognizing the movement of the master cylinder push rod; the magnet moves along with the main cylinder push rod, the magnetic field intensity with different strengths is identified to judge the stroke of the main cylinder push rod, so that the braking intention of a driver is judged, and the arrangement mode of the magnet and the follow-up connection mode of the main cylinder push rod are complex in structure and large in occupied space.
Disclosure of Invention
The invention aims to provide a novel device for detecting the position of a pedal, which has simplified structural design, omits a set of follow-up mechanism in the internal space, optimizes the space, can reduce the total amount and volume of products and has strong signal stability.
The technical purpose of the invention is realized by the following technical scheme:
a novel device for detecting the pedal position comprises a main cylinder shell and a main cylinder push rod, wherein a first piston is arranged in the main cylinder shell, one end of the main cylinder push rod is connected to a brake pedal, the other end of the main cylinder push rod is connected to the first piston, and the first piston is pushed forwards in the main cylinder shell through the main cylinder push rod when the brake pedal is stepped;
a mounting hole is formed in one end, away from the main cylinder push rod, of the first piston, and a plurality of magnet blocks are mounted in the mounting hole; the main cylinder shell is also connected with a pedal position sensor used for sensing the position movement of the magnet.
Furthermore, a push rod seat is installed at one end of the first piston, which is close to the push rod of the main cylinder, and the end part of the push rod of the main cylinder is connected into the push rod seat.
Further, the sensor is connected to the master cylinder housing by a snap or interference fit.
Furthermore, the holder is detachably connected in the mounting hole, and the magnet is detachably connected in the holder.
Furthermore, the retainer is fixedly arranged in the mounting hole through an interference or limiting guide mechanism, and the magnet is fixedly arranged in the retainer through the interference or limiting guide mechanism.
Still further, the sensor includes an internal sensing circuit board.
Furthermore, a chip for inducing the intensity of the magnetic field is arranged at the lower end of the sensing circuit board.
Furthermore, the upper end of the sensing circuit board is a signal output end.
Furthermore, the upper end of the sensing circuit board is connected with a plurality of contact springs, and the other ends of the contact springs are connected with the controller circuit board.
Furthermore, the upper end of the sensing circuit board is connected to the controller circuit board through a pin.
In conclusion, the invention has the following beneficial effects:
the complicated master cylinder push rod follow-up structure design is avoided, the magnet is directly fixed in the first cavity piston of the master cylinder shell, the pedal stepping depth of a driver can be directly detected, the intention of the driver is recognized, and the sensor failure caused by the failure of the middle follow-up mechanism is avoided; the magnet is directly fixed in the first piston, the structural design is simplified, a set of follow-up mechanism is omitted in the internal space, the space is optimized, and the total amount and the volume of the product can be reduced;
in addition, the upper end of the sensor is directly connected with the controller through the contact spring, the original structure is prevented from being connected to pins of the controller through an external wire harness, the number of the pins of the controller is reduced, the sensor signal is directly connected through the internal contact spring, the sensor signal is prevented from being transmitted through the external wire harness, the external interference on the sensor signal is avoided, and the signal stability is higher.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, 1, a brake pedal; 2. a master cylinder push rod; 3. a push rod seat; 4. a first piston; 5. a holder; 6. a magnet; 7. a master cylinder first cavity spring; 8. a master cylinder two-chamber; 9. a master cylinder housing; 10. a sensor; 11. a sensing circuit board; 12. a contact spring; 13. a controller circuit board.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings, and the present embodiment is not to be construed as limiting the invention.
The utility model provides a novel detect device of footboard position, as shown in fig. 1, including master cylinder casing 9 and master cylinder push rod 2, be equipped with first piston 4 and second piston in proper order from the extroversion in the master cylinder casing 9, first piston 4 and second piston divide into the inboard master cylinder cavity 8 of second piston in the master cylinder casing 9, a master cylinder cavity between first piston 4 and the second piston, be connected through a master cylinder cavity spring 7 between first piston 4 and the second piston, through master cylinder cavity spring coupling between second piston and the master cylinder casing 9 the inner, specific master cylinder casing 9's communicating structure, the assembly and the traditional master cylinder mode connected mode of a master cylinder cavity spring 7 and master cylinder cavity 8 inside are the same, do not do too much to describe here.
As shown in fig. 1, one end of a master cylinder push rod 2 is connected to a brake pedal 1, and the other end is connected to a first piston 4, when the brake pedal 1 is stepped on, the first piston 4 is pushed forwards in a master cylinder housing 9 by the master cylinder push rod 2; specifically, one end of the first piston 4, which is close to the master cylinder push rod 2, is opened and fixedly provided with a push rod seat 3, and the end part of the master cylinder push rod 2 is connected into the push rod seat 3;
the main cylinder push rod 2 can be hinged to the brake pedal 1 at one end and hinged/ball-hinged to the push rod seat 3 at the other end, or hinged to a sliding block sliding along the brake pedal 1 at one end and fixed to the push rod seat 3 at the other end, so that the first piston 4 can be pushed by the pushing force of the brake pedal 1 to move in the main cylinder shell 9 through the main cylinder push rod 2.
As shown in fig. 1, a mounting hole is formed in one end of the first piston 4, which is far away from the master cylinder push rod 2, and two magnets 6 are mounted in the mounting hole; specifically, a retainer 5 is detachably connected in the mounting hole, and a magnet 6 is detachably connected in the retainer 5; the holder 5 is fixed in the mounting hole through an interference or limiting guide mechanism, and the magnet 6 is fixed in the holder 5 through the interference or limiting guide mechanism.
As shown in fig. 1, a pedal position sensor 10 for sensing the position movement of the magnet 6 is further connected to the master cylinder housing 9, and the sensor 10 is connected to the master cylinder housing 9 in a snap fit or interference manner;
the sensor 10 comprises a sensing circuit board 11 fixed inside, and a chip used for sensing the intensity of a magnetic field is arranged at the lower end (11 a) of the sensing circuit board 11 so as to identify the pedal depth of a driver; the upper end (llb) of the sensing circuit board 11 is a signal output end;
the upper end of the sensing circuit board 11 is connected with a plurality of contact springs 12, and the other ends of the contact springs 12 are connected with the controller circuit board 13 and connected with the controller circuit board 13 through the contact springs 12.
The upper end of the sensing circuit board 11 can also be connected to the controller circuit board 13 (via soldered to the controller circuit board 13) through pin pins.
The working principle is as follows:
the driver steps on brake pedal 1, brake pedal 1 drives main cylinder push rod 2 and moves forward, the main cylinder push rod 2 other end links firmly together through push rod seat 3 with a main cylinder chamber piston, promote the first piston 4 of main cylinder and move forward, magnet 6 passes through holder 5 to be fixed in a main cylinder chamber piston department, the driver steps on brake pedal 1 back, magnet 6 also can move forward thereupon, magnet 6 moves forward, sensor 10 senses the change of magnetic field intensity, with signal transmission to controller circuit board 13, thereby judge the degree of depth that brake pedal 1 stepped on, discernment driver's driving intention.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a novel detect footboard position device which characterized in that: the brake pedal comprises a main cylinder shell (9) and a main cylinder push rod (2), wherein a first piston (4) is arranged in the main cylinder shell (9), one end of the main cylinder push rod (2) is connected to a brake pedal (1), the other end of the main cylinder push rod is connected to the first piston (4), and the first piston (4) is pushed forwards in the main cylinder shell (9) through the main cylinder push rod (2) when the brake pedal (1) is stepped;
a mounting hole is formed in one end, far away from the main cylinder push rod (2), of the first piston (4), and a plurality of magnet (6) blocks are mounted in the mounting hole; the master cylinder shell (9) is also connected with a pedal position sensor (10) for sensing the position movement of the magnet (6).
2. The novel pedal position detecting device according to claim 1, wherein: the push rod seat (3) is installed at one end, close to the main cylinder push rod (2), of the first piston (4), and the end portion of the main cylinder push rod (2) is connected into the push rod seat (3).
3. The novel pedal position detecting device according to claim 1, wherein: the sensor (10) is connected to the master cylinder housing (9) in a snap-fit or interference manner.
4. The novel pedal position detecting device according to claim 1, wherein: the mounting hole is internally detachably connected with a retainer (5), and the magnet (6) is detachably connected in the retainer (5).
5. The novel device for detecting pedal position as set forth in claim 4, wherein: the holder (5) is fixedly arranged in the mounting hole through an interference or limiting guide mechanism, and the magnet (6) is fixedly arranged in the holder (5) through the interference or limiting guide mechanism.
6. The novel pedal position detecting device according to claim 1, wherein: the sensor (10) comprises an internal sensor circuit board (11).
7. The novel pedal position sensing device of claim 6, wherein: the lower end of the sensing circuit board (11) is provided with a chip for sensing the intensity of the magnetic field.
8. The novel pedal position sensing device of claim 7, wherein: the upper end of the sensing circuit board (11) is a signal output end.
9. The novel pedal position sensing device of claim 8, wherein: the upper end of the sensing circuit board (11) is connected with a plurality of contact springs (12), and the other ends of the contact springs (12) are connected with the controller circuit board (13).
10. The novel pedal position sensing device of claim 8, wherein: the upper end of the sensing circuit board (11) is connected to the controller circuit board (13) through a pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210161881.XA CN114435319A (en) | 2022-02-22 | 2022-02-22 | Novel detect footboard position device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210161881.XA CN114435319A (en) | 2022-02-22 | 2022-02-22 | Novel detect footboard position device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114435319A true CN114435319A (en) | 2022-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210161881.XA Pending CN114435319A (en) | 2022-02-22 | 2022-02-22 | Novel detect footboard position device |
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| CN (1) | CN114435319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117657089A (en) * | 2024-01-30 | 2024-03-08 | 千顾汽车科技(江苏)有限公司 | Pedal displacement sensor assembly structure of electric control brake system |
-
2022
- 2022-02-22 CN CN202210161881.XA patent/CN114435319A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117657089A (en) * | 2024-01-30 | 2024-03-08 | 千顾汽车科技(江苏)有限公司 | Pedal displacement sensor assembly structure of electric control brake system |
| CN117657089B (en) * | 2024-01-30 | 2024-05-03 | 千顾汽车科技(江苏)有限公司 | Pedal displacement sensor assembly structure of electric control brake system |
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