CN210062952U - Brake simulator with failure protection function and adjustable pedal feeling - Google Patents
Brake simulator with failure protection function and adjustable pedal feeling Download PDFInfo
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- CN210062952U CN210062952U CN201920878876.4U CN201920878876U CN210062952U CN 210062952 U CN210062952 U CN 210062952U CN 201920878876 U CN201920878876 U CN 201920878876U CN 210062952 U CN210062952 U CN 210062952U
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Abstract
The utility model discloses a brake simulator with failure protection and adjustable pedal feeling in the technical field of automobiles, which comprises a brake pedal assembly, a motor reducing mechanism assembly, a brake pedal corner sensor, a hydraulic cylinder assembly, a one-way valve assembly, a brake pedal return spring and a motor return spring, wherein the brake pedal assembly is arranged at the front end of the hydraulic cylinder assembly, the brake pedal corner sensor is arranged at the front end of the brake pedal assembly, the motor reducing mechanism assembly is arranged at the rear end of the hydraulic cylinder assembly, the motor position sensor is arranged at the front end of the motor reducing mechanism assembly, the brake pedal return spring is arranged on the hydraulic cylinder assembly, the motor return spring is arranged on the hydraulic cylinder assembly, the brake pedal and a brake actuating mechanism are completely decoupled through the device, and the brake simulator solves the requirement that the brake pedal provides feedback force for a driver at different positions and speeds during braking, the economical and practical performance is stronger.
Description
Technical Field
The utility model relates to the field of automotive technology, specifically be a take brake simulator of fail safe's adjustable footboard sensation.
Background
With the development of automobile electronic technology, more and more electronic control units are provided on automobiles, and the control of automobiles is more and more mature. In the field of conventional braking technology, hydraulic or pneumatic braking is mainly used in order to meet the requirements of regulations. However, with the development of electronic technology, the traditional brake mechanism has been exposed, the brake response is slow, the brake pressure pipeline is difficult to arrange, the brake torque is difficult to adjust, and the like.
At present, most of braking systems of automobiles adopt a vacuum booster, but with the increase of the trend of automobile electromotion, an energy storage battery can gradually replace an engine, so that a vacuum source required by the vacuum booster can be obtained only by additionally adding a vacuum pump. This not only increases the cost, is not favorable to the arrangement, also makes the noise of vehicle increase.
The brake pedal and the executing mechanism of the traditional brake mechanism are not completely decoupled, the pressure of a brake pipeline is generated by a brake master cylinder, and brake fluid acts on a brake wheel cylinder through the brake pipeline, so that the traditional brake system has the defects of slow brake response, difficulty in brake pressure pipeline arrangement, difficulty in brake torque adjustment and the like. The existing novel electric power-assisted brake system still does not realize the complete decoupling of the brake pedal mechanism and the brake actuating mechanism. The chassis active control of modern automobiles and the regenerative braking requirement of new energy automobiles are difficult to adapt.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take failure protection's brake simulator of adjustable footboard sensation to solve the problem that the current arrestment mechanism that provides in the above-mentioned background art can not adapt to the chassis active control of modern car and new energy automobile's regenerative braking needs.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a take adjustable pedal sense's of failure protection braking simulator, includes brake pedal assembly, motor reduction gears assembly, brake pedal corner sensor, pneumatic cylinder assembly, motor position sensor, check valve assembly, brake pedal return spring and motor return spring, the front end at the pneumatic cylinder assembly is installed to the brake pedal assembly, brake pedal corner sensor installs the front end at the brake pedal assembly, motor reduction gears assembly installs the rear end at the pneumatic cylinder assembly, motor position sensor installs the front end at motor reduction gears assembly, the check valve assembly is installed in the pneumatic cylinder assembly, brake pedal return spring installs on the pneumatic cylinder assembly, motor return spring installs on the pneumatic cylinder assembly.
Preferably, the brake pedal assembly comprises a brake pedal, a bottom plate, a connecting rod, a connecting bolt and a connector, the brake pedal is rotatably connected with the bottom plate through the bolt, the middle of the brake pedal is rotatably connected with the connecting rod through the bolt, and the rear part of the connecting rod is connected with the connector through the bolt.
Preferably, the motor reduction gears assembly includes motor, pinion, key A, gear wheel and key B, the output shaft of motor passes through key A and is connected with the pinion meshing, the pinion is connected with the gear wheel meshing, the gear wheel passes through key B and is connected with circulation hole control valve meshing.
Preferably, the hydraulic cylinder assembly comprises a first piston, a first working chamber cover, a first piston sealing ring, a cylinder body, a second piston spring, a second piston sealing ring, a second working chamber cover and a circulation pore control valve, the first piston sealing ring is sleeved on the outer wall of the first piston, a first working cavity is arranged at the bottom of the first working cavity cover, the first piston moves in a first working cavity, the first working cavity cover is connected with the cylinder body through a bolt, the circulation pore control valve is in contact connection with the cylinder body, the second piston sealing ring is arranged outside the second piston, the flow aperture control valve penetrates through the middle part of the second piston, the second piston spring is supported between the second working chamber cover and the second piston, the rod part of the first piston penetrates through the bottom plate to be connected with the connector in a threaded mode, and the brake pedal return spring is sleeved on the rod part of the first piston and is in contact connection with the connector and the bottom plate.
Preferably, the check valve assembly includes a check valve spring and a check valve installed in the flow hole of the cylinder.
Preferably, the motor with be connected with circulation pore control valve through the gear wheel, motor return spring installs in the pole portion of circulation pore control valve, the pole portion of circulation pore control valve is run through to motor return spring's one end, peg graft between motor return spring's the other end and the second working chamber lid.
Compared with the prior art, the beneficial effects of the utility model are that: brake pedal simulator adopt motor control flow through hole clearance control valve pivoted angle to change brake pedal and feed back the power to the driver, ECU (electronic control unit) can combine brake pedal displacement signal, motor position signal produces suitable control signal, satisfies different driving demands, effectively simulates the sensation of controlling brake pedal.
Brake pedal simulator's simple structure, the compactness, make with the low cost of maintaining, the noise that work produced is low. And the comfort and the stability during braking are greatly improved.
Brake pedal simulator can adapt to the needs of present vehicle chassis control technique well, be the indispensable component part among the brake-by-wire system. The brake pedal and the brake actuating mechanism are completely decoupled, and the development requirements of an automobile active braking technology and an intelligent automobile can be well met.
Brake pedal simulator have the backup function of motor failure, when the motor became invalid, motor return spring can adjust the position of circulation pore control valve to maximum aperture, ensured that brake pedal can rotate, prevented that the unable condition of trampling brake pedal from taking place.
Brake pedal corner sensor replace displacement sensor for the position of sensor is better arranged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of the position B-B, A-a of the present invention.
In the figure: the brake pedal comprises a brake pedal angle sensor 1, a brake pedal 2, a connecting rod 3, a connecting bolt 4, a connector 5, a brake pedal return spring 6, a base plate 7, a first piston 8, a first working cavity cover 9, a one-way valve 10, a one-way valve spring 11, a circulation pore control valve 12, a second piston 13, a second piston spring 14, a motor position sensor 15, a motor 16, a cylinder 17, a second working cavity cover 18, a gear wheel 19, a key B20, a pinion 21, a key A22, a first piston sealing ring 23, a second piston sealing ring 24 and a motor return spring 25.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a following technical scheme: a brake simulator with failure protection and adjustable pedal feeling is used for meeting the requirement that a brake pedal provides feedback force for a driver at different positions and speeds during braking, and referring to figure 1, the brake simulator comprises a brake pedal assembly, a motor retarding mechanism assembly, a brake pedal corner sensor 1, a hydraulic cylinder assembly, a motor position sensor 15, a one-way valve assembly, a brake pedal return spring 6 and a motor return spring 25, wherein the brake pedal assembly is installed at the front end of the hydraulic cylinder assembly, the brake pedal corner sensor 1 is installed at the front end of the brake pedal assembly, the motor retarding mechanism assembly is installed at the rear end of the hydraulic cylinder assembly, the motor position sensor 15 is installed at the front end of the motor retarding mechanism assembly, the one-way valve assembly is installed in the hydraulic cylinder assembly, and the brake pedal return spring 6 is installed on the hydraulic cylinder assembly, the motor return spring 25 is mounted on the hydraulic cylinder assembly.
Brake pedal assembly includes brake pedal 2, bottom plate 7, connecting rod 3, connecting bolt 4 and connector 5, brake pedal 2 rotates with bottom plate 7 through the bolt to the part that brake pedal 2 is connected with bottom plate 7 adopts the contact mode of restriction rotation angle, rotate with connecting rod 3 through the bolt in the middle of brake pedal 2 and be connected, connecting rod 3 rear portion is connected with connector 5 through the bolt.
The motor reduction gears assembly includes motor 16, pinion 21, key A22, gear wheel 19 and key B20, the output shaft of motor 16 passes through key A22 and is connected with the meshing of pinion 21, pinion 21 and gear wheel 19 meshing are connected, gear wheel 19 passes through key B20 and is connected with circulation aperture control valve 12 meshing.
The hydraulic cylinder assembly comprises a first piston 8, a first working chamber cover 9, a first piston sealing ring 23, a cylinder body 17, a second piston 13, a second piston spring 14, a second piston sealing ring 24, a second working chamber cover 18 and a circulation pore control valve 12, wherein the first piston sealing ring 23 is sleeved on the outer wall of the first piston 8, a first working chamber is installed at the bottom of the first working chamber cover 9, the first piston 8 moves in the first working chamber, the first working chamber cover 9 is connected with the cylinder body 17 through a bolt, the circulation pore control valve 12 is in contact connection with the cylinder body 17 to prevent the liquid from flowing out of a circulation hole, the second piston sealing ring 24 is installed outside the second piston 13, the circulation pore control valve 12 penetrates through the middle of the second piston 13, the second piston spring 14 is supported between the second working chamber cover 18 and the second piston 13, the rod part of the first piston 8 penetrates through the bottom plate 7 to be in threaded connection with the connector 5, the first piston 8 is guaranteed to do horizontal linear motion, the limiting device of the first piston 8 guarantees that the stroke of the first piston 8 moves within a certain range relative to the bottom plate 7, and the brake pedal return spring 6 is sleeved on the rod part of the first piston 8 and is in contact connection with the connector 5 and the bottom plate 7.
The check valve assembly comprises a check valve spring 11 and a check valve 10, wherein the check valve 10 is arranged in a circulation hole of a cylinder body 17 to ensure that no liquid passes through the circulation hole in the compression process; the check valve return spring 11 ensures that the check valve 10 and the cylinder 17 have a certain pre-tightening force.
The motor 16 is connected with the circulation pore control valve 12 through the bull gear 19 to control the size of the circulation pore, the motor return spring 25 is installed at the rod part of the circulation pore control valve 12, the rod part of the circulation pore control valve 12 is penetrated through by one end of the motor return spring 25, and the other end of the motor return spring 25 is inserted into the second working cavity cover 18.
In the specific use process, the condition that the motor normally works:
under the condition that the driver steps on brake pedal 2, when the driver steps on brake pedal 2, brake pedal 2 drives connecting rod 3 through the bolt and moves, and connecting rod 3 drives connecting head 5 through the bolt and moves, and connecting head 5 is connected with first piston through the screw thread, and the connecting head after the connection transmits the motion of connecting rod transmission to first piston 8, and horizontal linear motion is done through the cooperation with bottom plate 7 round hole to first piston 8. The first piston 8 is contacted with the round hole of the bottom plate 7 through a limiting device of the rod part, and the purpose of limiting when the brake pedal is stepped on is achieved. The movement of the first piston 8 causes the area of the first working chamber to compress. During compression of the volume of the first working chamber, the first piston 8 presses the liquid in the first working chamber through the compression orifice to the second working chamber. The damping during braking can be varied by varying the area of the compression orifice, which is determined primarily by the relative positions of the flow orifice control valve 12 and the bore of the cylinder 17. The brake pedal rotation angle sensor 1 converts rotation angle signals into electric signals, the motor position sensor 15 collects rotation angle signals of the motor 16, the two signals are transmitted to an ECU (electronic control unit) at the same time, the ECU (electronic control unit) outputs control signals to the motor 16 through calculation, the motor 16 drives the pinion 21 to rotate through a key A22, the pinion 21 transmits movement to the gearwheel 19 through meshing with the gearwheel 19, the gearwheel 19 transmits the movement to the circulation pore control valve 12 through a key B20, and the gearwheel 21 finally drives the circulation pore control valve 12 to rotate, so that the area size of a compression hole can be changed. When the brake pedal 2 is at a small rotational angle and a low speed, the motor 16 controls the rotational angle position of the flow aperture control valve 12 such that the compression orifice is at a large flow area and thus the damping force acting on the brake pedal 2 is small; in the case where the brake pedal 2 is at a large rotation angle and high speed, the motor 16 controls the rotation angle position of the flow aperture control valve 12 such that the compression hole is at a small flow area, and therefore, the damping force acting on the brake pedal 2 is large. When the liquid enters the second working chamber, it pushes the second piston 13 to move, so that the second piston spring 14 is compressed and the internal pressure of the second working chamber is increased. The pressure increase of the second working chamber also leads to the pressure increase in the first working chamber, increasing the hydraulic counter force acting on the brake pedal 2;
in the case where the driver releases the brake pedal 2:
the brake pedal return spring 6 pushes the connector 5 to move, on one hand, the connector 5 pushes the connecting rod 3 to move through the bolt, and the connecting rod 3 enables the brake pedal 2 to move anticlockwise through the bolt, so that the brake pedal 2 returns to the original position; on the other hand, the connector 5 is connected with the first piston 8 through a thread, the first piston 8 also performs return movement by the return movement of the connector 5, when the first piston 8 retreats, the area of the first working cavity is increased, and the liquid flows back into the first working cavity from the second working cavity through the check valve 10. In the process of liquid flowing, due to the action of the second piston spring 14, the pressure in the second working cavity is larger than that in the first working cavity, the liquid in the second working cavity can push the pretightening force of the one-way valve spring 14, so that the one-way valve 10 is opened, the liquid flows to the first working cavity from the second working cavity, the pore of the one-way valve 10 is made as large as possible, the process of liquid backflow is made as fast as possible, and the reliability of next braking is guaranteed. Meanwhile, the brake pedal rotation angle sensor 1 converts the rotation angle signal into an electric signal, the motor position sensor 15 collects the rotation angle signal of the motor 16, the two signals are transmitted to an ECU (electronic control unit) at the same time, the ECU (electronic control unit) outputs a control signal to the motor 16 through calculation, the motor 16 drives the pinion 21 to rotate through a key A22, the pinion 21 transmits the motion to the gearwheel 19 through meshing with the gearwheel 19, the gearwheel 19 transmits the motion to the circulation pore control valve 12 through a key B20, and the gearwheel 21 finally drives the circulation pore control valve 12 to rotate, so that the circulation pore control valve 12 is restored to a corresponding position;
case of motor failure:
under the condition that the driver steps on brake pedal 2, when the driver steps on brake pedal 2, brake pedal 2 drives connecting rod 3 through the bolt and moves, and connecting rod 3 drives connecting head 5 through the bolt and moves, and connecting head 5 is connected with first piston through the screw thread, and the connecting head after the connection transmits the motion of connecting rod transmission to first piston 8, and horizontal linear motion is done through the cooperation with bottom plate 7 round hole to first piston 8. The first piston 8 is contacted with the round hole of the bottom plate 7 through a limiting device of the rod part, and the purpose of limiting when the brake pedal 2 is stepped down is achieved. The movement of the first piston 8 causes the area of the first working chamber to compress. During compression of the volume of the first working chamber, the first piston 8 presses the liquid in the first working chamber through the compression orifice to the second working chamber. When the motor 16 fails, the motor return spring 25 drives the circulation aperture control valve 12 to rotate to the maximum opening degree relative to the cylinder body 17, so as to ensure that the compression hole can smoothly circulate liquid. After the first working chamber after the compression squeezes liquid into the second working chamber, can promote second piston 13 motion to make second piston spring 14 compress, the internal pressure increase of second working chamber can make the pressure in the first working chamber improve after the pressure increase of second working chamber, and the hydraulic pressure counter-force of increase effect on brake pedal 2, thereby the security of braking when having guaranteed the motor inefficacy.
While the invention has been described above with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the various embodiments disclosed herein can be used in any combination with one another, and the description of such combinations that is not exhaustive in this specification is merely for brevity and resource saving. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A brake simulator with failure protection and adjustable pedal feel is characterized in that: including brake pedal assembly, motor reduction gears assembly, brake pedal corner sensor (1), pneumatic cylinder assembly, motor position sensor (15), check valve assembly, brake pedal return spring (6) and motor return spring (25), the front end at the pneumatic cylinder assembly is installed to the brake pedal assembly, the front end at the brake pedal assembly is installed in brake pedal corner sensor (1), the rear end at the pneumatic cylinder assembly is installed to motor reduction gears assembly, the front end at motor reduction gears assembly is installed in motor position sensor (15), the check valve assembly is installed in the pneumatic cylinder assembly, install on the pneumatic cylinder assembly brake pedal return spring (6), motor return spring (25) are installed on the pneumatic cylinder assembly.
2. The fail-safe adjustable pedal feel brake simulator of claim 1, wherein: brake pedal assembly includes brake pedal (2), bottom plate (7), connecting rod (3), connecting bolt (4) and connector (5), brake pedal (2) are rotated with bottom plate (7) through the bolt and are connected, rotate with connecting rod (3) through the bolt in the middle of brake pedal (2) and be connected, connecting rod (3) rear portion is connected with connector (5) through the bolt.
3. The fail-safe adjustable pedal feel brake simulator of claim 1, wherein: the motor reduction gears assembly includes motor (16), pinion (21), key A (22), gear wheel (19) and key B (20), the output shaft of motor (16) passes through key A (22) and is connected with pinion (21) meshing, pinion (21) and gear wheel (19) meshing are connected, gear wheel (19) pass through key B (20) and circulate pore control valve (12) meshing and be connected.
4. The fail-safe adjustable pedal feel brake simulator of claim 2, wherein: the hydraulic cylinder assembly comprises a first piston (8), a first working cavity cover (9), a first piston sealing ring (23), a cylinder body (17), a second piston (13), a second piston spring (14), a second piston sealing ring (24), a second working cavity cover (18) and a circulation pore control valve (12), wherein the first piston sealing ring (23) is sleeved on the outer wall of the first piston (8), the bottom of the first working cavity cover (9) is provided with the first working cavity, the first piston (8) moves in the first working cavity, the first working cavity cover (9) is connected with the cylinder body (17) through bolts, the circulation pore control valve (12) is in contact connection with the cylinder body (17), the second piston sealing ring (24) is arranged outside the second piston (13), and the circulation pore control valve (12) penetrates through the middle part of the second piston (13), second piston spring (14) support between second working chamber lid (18) and second piston (13), the pole portion of first piston (8) runs through bottom plate (7) and connector (5) threaded connection, brake pedal return spring (6) cover is connected with connector (5) and bottom plate (7) contact at the pole portion of first piston (8).
5. The fail-safe adjustable pedal feel brake simulator of claim 4, wherein: the check valve assembly comprises a check valve spring (11) and a check valve (10), and the check valve (10) is installed in a flow hole of a cylinder body (17).
6. The fail-safe adjustable pedal feel brake simulator of claim 4, wherein: motor (16) with be connected with circulation hole control valve (12) through gear wheel (19), motor return spring (25) are installed in the pole portion of circulation hole control valve (12), the pole portion of circulation hole control valve (12) is run through to the one end of motor return spring (25), peg graft between the other end of motor return spring (25) and second working chamber lid (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878876.4U CN210062952U (en) | 2019-06-12 | 2019-06-12 | Brake simulator with failure protection function and adjustable pedal feeling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920878876.4U CN210062952U (en) | 2019-06-12 | 2019-06-12 | Brake simulator with failure protection function and adjustable pedal feeling |
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| Publication Number | Publication Date |
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| CN210062952U true CN210062952U (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920878876.4U Active CN210062952U (en) | 2019-06-12 | 2019-06-12 | Brake simulator with failure protection function and adjustable pedal feeling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228455A (en) * | 2019-06-12 | 2019-09-13 | 吉林大学 | A kind of braking simulator that the adjustable pedal with fail safe is felt |
| CN111605533A (en) * | 2020-06-01 | 2020-09-01 | 长沙理工大学 | Working method of automobile power system |
-
2019
- 2019-06-12 CN CN201920878876.4U patent/CN210062952U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228455A (en) * | 2019-06-12 | 2019-09-13 | 吉林大学 | A kind of braking simulator that the adjustable pedal with fail safe is felt |
| CN110228455B (en) * | 2019-06-12 | 2024-03-15 | 吉林大学 | Brake simulator with failure protection and adjustable pedal feel |
| CN111605533A (en) * | 2020-06-01 | 2020-09-01 | 长沙理工大学 | Working method of automobile power system |
| CN111605533B (en) * | 2020-06-01 | 2021-08-13 | 长沙理工大学 | Working method of automobile power system |
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