CN111591273A - Vehicle braking system and vehicle - Google Patents
Vehicle braking system and vehicle Download PDFInfo
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- CN111591273A CN111591273A CN202010417857.9A CN202010417857A CN111591273A CN 111591273 A CN111591273 A CN 111591273A CN 202010417857 A CN202010417857 A CN 202010417857A CN 111591273 A CN111591273 A CN 111591273A
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- brake
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- buffer
- spring
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/745—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on a hydraulic system, e.g. a master cylinder
Abstract
The invention discloses a vehicle braking system and a vehicle, wherein the vehicle braking system comprises: the brake system comprises a brake push rod, an electric power assisting system, an information acquisition system and an electric control system. The brake push rod is connected with the brake pedal; the electric power assisting system comprises: the gear transmission assembly is matched with the screw assembly for transmission, the gear transmission assembly is suitable for driving the screw assembly to translate so as to push a main cylinder piston in a brake main cylinder to build pressure and achieve braking of a vehicle, and at least one part of the gear transmission assembly is provided with a buffer structure so as to achieve buffering between the screw assembly and the gear transmission assembly. The movable gear transmission assembly in the electric power-assisted system of the vehicle braking system is provided with the buffer structure, so that the impact between the screw assembly and the gear transmission assembly can be effectively avoided after the braking is completed, the electric power-assisted system is effectively protected, and the generation of collision abnormal sound can be effectively avoided, so that the NVH performance of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a vehicle braking system and a vehicle.
Background
After the braking operation of the conventional vehicle electric braking system is completed, the screw assembly can quickly return, when the vehicle electric braking system returns to an initial position, the inertia screw assembly can collide with the gear transmission assembly, abnormal sound is generated, the collision is accumulated too much, the screw assembly can be damaged, the reliability and the stability of the braking system are reduced, and an improvement space exists.
Disclosure of Invention
In view of the above, the present invention is directed to a vehicle braking system, which has better overall stability and does not generate abnormal collision noise, so as to improve the NVH performance of the vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle braking system comprising: the brake push rod is connected with the brake pedal; an electric assist system, the electric assist system comprising: the gear transmission assembly is in matched transmission with the screw assembly, the gear transmission assembly is suitable for driving the screw assembly to translate so as to push a master cylinder piston in a brake master cylinder to build pressure and realize braking of a vehicle, and at least one part of the gear transmission assembly is provided with a buffer structure so as to realize buffer action between the screw assembly and the gear transmission assembly; the brake system comprises an information acquisition system and an electric control system, wherein the information acquisition system is used for acquiring displacement information of the brake push rod and transmitting the displacement information to the electric control system, and the electric control system can control the electric power assisting system to start and operate according to the displacement information.
Further, the screw assembly includes: cavity screw rod and setting are in the screw rod support of cavity screw rod one end, the cavity screw rod cover is established on the brake push rod, gear drive assembly includes: the buffer structure comprises a first gear and a second gear, wherein the first gear is in transmission with a driving motor in the electric power assisting system, the second gear is sleeved on the hollow screw and is in meshing transmission with the first gear and the hollow screw, and the buffer structure is arranged on one side wall, close to the screw support, of the second gear.
Further, the buffer structure includes: a plurality of buffer portions, each of the buffer portions including: installation sleeve, buffer spring and buffering ball, the mounting groove has been seted up on the second gear, installation sleeve is spacing to be installed in the mounting groove, buffer spring sets up in the installation sleeve, the rotatable spacing of buffering ball is in installation sleeve's port with between the port of mounting groove, just the extrusion of buffering ball buffer spring, wherein, at least partly salient of buffering ball the mounting groove.
Further, the plurality of buffer portions are arranged at equal intervals in the circumferential direction.
Further, the information acquisition system includes: displacement sensor and magnetite, displacement sensor sets up outside vehicle braking system's the casing, be connected with the magnetite installing support on the brake push rod, the mobilizable spacing setting of magnetite is in the magnetite installing support with between the casing, displacement sensor is suitable for the collection the displacement information of magnetite.
Further, limiting structure has on the magnetite installing support, be located the part more than limiting structure the cover is equipped with support spring on the magnetite installing support, the magnetite cover is established just extrude on the magnetite installing support spring.
Further, the screw rod assembly sets up one side of magnetite installing support, the opposite side of magnetite installing support is provided with the support frame, just the support frame cover is established brake push rod is last, dodge the breach has on the support frame, the screw rod assembly is suitable for promoting the support frame so that the support frame promotes master cylinder piston in the brake master cylinder and establishes pressure, the support frame with return spring has between the brake master cylinder.
Further, the vehicle brake system further includes: a pedal simulator adapted to be pressed by the brake push rod to simulate a pedal feel generated upon braking, the pedal simulator being configured in a multi-stage compression form.
Further, the pedal simulator includes: one-level spring, secondary spring and connect one-level spring with buffer baffle between the secondary spring, one-level spring sets up brake push rod be close to brake pedal's one end with between the buffer baffle, the secondary spring sets up gear drive assembly with between the buffer baffle, wherein, the coefficient of stiffness of one-level spring is less than the coefficient of stiffness of secondary spring.
Compared with the prior art, the vehicle brake system has the following advantages:
according to the vehicle braking system, the movable gear transmission assembly in the electric power-assisted system of the vehicle braking system is provided with the buffer structure, so that the impact between the screw rod assembly and the gear transmission assembly can be effectively avoided after the braking is finished, the electric power-assisted system is further effectively protected, the overall stability of the vehicle braking system is effectively improved, the service life of the vehicle braking system is prolonged, and the generation of collision abnormal sound can be effectively avoided, so that the NVH performance of a vehicle is improved.
Another object of the present invention is to provide a vehicle including the above vehicle brake system, which has better NVH performance.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a cross-sectional view of a vehicle braking system according to an embodiment of the present invention;
FIG. 2 is a schematic partial block diagram of a vehicle braking system according to an embodiment of the present invention;
FIG. 3 is a schematic partial block diagram of a vehicle braking system according to an embodiment of the present invention;
FIG. 4 is a schematic partial block diagram of a vehicle braking system according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a pedal simulator according to an embodiment of the present invention.
Description of reference numerals:
100-vehicle brake system, 1-brake push rod, 3-screw assembly, 4-master cylinder piston, 5-buffer structure, 22-second gear, 31-hollow screw, 32-screw support, 51-buffer part, 511-installation sleeve, 512-buffer spring, 513-buffer ball, 221-installation groove, 62-magnet, 7-magnet installation support, 101-shell, 71-limit structure, 72-support spring, 8-support frame, 81-return spring, 9-pedal simulator, 91-primary spring, 92-secondary spring, 93-buffer clapboard, 94-spring stopper, 95-spring base, 11-ejector rod and 10-brake master cylinder.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
A vehicle brake system 100 according to an embodiment of the invention is described below with reference to fig. 1 to 5.
The vehicle brake system 100 according to the embodiment of the present invention may include: the brake system comprises a brake push rod 1, an electric power assisting system, an information acquisition system and an electric control system.
As shown in fig. 1 to 3, the brake push rod 1 is connected to the brake pedal such that the brake push rod 1 is movable in accordance with the movement of the brake pedal. The information acquisition system is used for acquiring displacement information of the brake push rod 1 and transmitting the displacement information to the electric control system, and the electric control system can control the electric power-assisted system to start and operate according to the displacement information so as to realize braking operation of the vehicle through the electric power-assisted system. Therefore, the reaction speed of the vehicle brake system 100 is effectively improved.
That is, the present invention brakes the vehicle by completely decoupling the stepping force from the braking force, that is, the present invention brakes the vehicle by the electric booster system without using the force of stepping the brake pedal. Therefore, the optimal hydraulic braking force can be provided through the electric power-assisted system to cooperate with the regenerative braking force to recover the braking energy to the maximum extent, and the endurance mileage of the vehicle can be effectively improved.
Further, the electric assist system includes: the gear transmission assembly is suitable for being driven by a driving motor to drive the gear transmission assembly to run after the electric power-assisted system receives a braking signal transmitted by an electric control system, the gear transmission assembly is in transmission fit with the screw rod assembly 3 to convert the rotary motion of the gear transmission assembly into the translational motion of the screw rod assembly 3, so that the gear transmission assembly can drive the screw rod assembly 3 to translate to push a master cylinder piston 4 in a brake master cylinder 10 to build pressure, the generated brake hydraulic pressure is distributed to four wheel cylinders of an automobile through an Electronic Stability Program (ESP), and the four wheel cylinders generate brake pressure to realize braking of the automobile.
Wherein, be provided with buffer structure 5 on at least some of gear drive assembly, buffer structure 5 can realize the cushioning effect between screw assembly 3 and gear drive assembly to avoid braking to accomplish the back, take place the striking between screw assembly 3 and the gear drive assembly, thereby effectual protection screw assembly 3 and gear drive assembly, and then the effectual overall stability who promotes vehicle braking system 100 and the life who has prolonged vehicle braking system 100.
Specifically, after the braking, the driver loosens the brake pedal, and the information acquisition system gathers relevant information and transmits for electrical system, and electrical system control driving motor stop work, return spring 81 release this moment and promote support frame 8, and support frame 8 promotes 3 reverse movements of screw assembly, and buffer structure 5 can avoid screw assembly 3 and the direct striking that takes place of moving gear transmission assembly when screw assembly 3 reverse movements to realize effectual cushioning effect.
Of course, in other embodiments, after braking is finished, the electric control system controls the driving motor to rotate reversely to realize reverse movement of the screw assembly 3, and at this time, the buffer structure 5 can still play a role in preventing the screw assembly 3 and the moving gear transmission assembly from directly colliding.
According to the vehicle brake system 100 provided by the embodiment of the invention, the buffering structure 5 is arranged on the moving gear transmission assembly in the electric power-assisted system of the vehicle brake system 100, so that the impact between the screw assembly 3 and the gear transmission assembly can be effectively avoided after the braking is finished, the electric power-assisted system is further effectively protected, the overall stability of the vehicle brake system 100 is effectively improved, the service life of the vehicle brake system is prolonged, and the generation of collision abnormal sound can be effectively avoided, so that the NVH performance of a vehicle is improved.
In connection with the embodiment shown in fig. 1-3, the screw assembly 3 includes: hollow screw 31 and the screw rod support 32 of setting in hollow screw 31 one end, hollow screw 31 and the equal mobilizable cover of screw rod support 32 are established on brake push rod 1, and the gear drive assembly includes: the first gear and the second gear 22 are in transmission with a driving motor in the electric power assisting system, the second gear 22 is sleeved on the hollow screw 31 and is in meshing transmission with the first gear and the hollow screw 31, and the buffer structure 5 is arranged on one side wall, close to the screw support 32, of the second gear 22 so as to avoid abnormal sound caused by collision between the screw support 32 and the second gear 22 after braking is finished.
Specifically, the input end of the brake push rod 1 is a U-shaped fork, the U-shaped fork is connected with the brake pedal, the treading force of a driver treading the brake pedal is amplified through a pedal ratio, the U-shaped fork is extruded, the brake push rod 1 is extruded to move, the information acquisition system can acquire the displacement information of the brake push rod 1 and transmits the displacement information to the electronic control system, the electronic control system can start and operate the electric power-assisted system according to the displacement information, at the moment, the driving motor starts to operate and generates power assistance, the driving motor drives the first gear to rotate through the motor gear, the first gear rotates and drives the second gear 22 to rotate, the screw support 32 and the shell 101 are in guiding fit, so that the axial rotation of the hollow screw 31 is limited, the translation is carried out under the meshing transmission of the second gear 22 and the hollow screw 31, namely, the hollow screw 31 converts the rotary motion into linear motion and pushes the support 8 to move forwards, and the support frame 8 pushes the master cylinder piston 4 in the brake master cylinder 10 to build pressure. After the braking is completed, since the buffer structure 5 is disposed on a side wall of the second gear 22 close to the screw bracket 32, the buffer structure 5 can effectively buffer the impact between the screw bracket 32 and the second gear 22 when the hollow screw 31 is retracted.
Among other things, it should be appreciated that the vehicle brake system 100 of the present invention is disposed in a linear arrangement to make it more space efficient and easier to arrange on a vehicle.
As shown in fig. 3, the buffer structure 5 includes: a plurality of buffer parts 51, each buffer part 51 including: the mounting sleeve 511, the buffer spring 512 and the buffer ball 513 are provided on the second gear 22, the mounting groove 221 is provided on the second gear 22, the mounting sleeve 511 is mounted in the mounting groove 221 in a limited manner, wherein a limiting flange is provided at the end of the mounting sleeve 511 to ensure the mounting stability of the mounting sleeve 511 in the mounting groove 221, or the mounting sleeve 511 can be integrally injection-molded in the second gear 22 to prevent the mounting sleeve 511 from coming off the second gear 22.
Further, a buffering spring 512 is provided in the mounting sleeve 511, a buffering ball 513 is rotatably restrained between the port of the mounting sleeve 511 and the port of the mounting groove 221, and the buffering ball 513 presses the buffering spring 512 to supply energy for buffering, wherein at least a portion of the buffering ball 513 protrudes out of the mounting groove 221 so as to be in contact with the screw bracket 32 to perform an effective buffering action. Wherein the damping balls 513 may be swaged at the ports of the mounting sleeve 511.
The buffering ball 513 is used for releasing the return spring 81, when the screw bracket 32 extrudes the second gear 22, the buffering ball 513 firstly contacts with the screw bracket 32, and because the second gear 22 rotates in the process of retracting the hollow screw 31, the buffering ball 513 firstly rotates to avoid the rotation friction between the screw bracket 32 and the second gear 22 in the process of contacting the buffering ball 513 with the screw bracket 32, and then the screw bracket 32 continuously extrudes the buffering ball 513 to enable the buffering ball 513 to extrude the buffering spring 512, so that the impact of the screw bracket 32 on the second gear 22 is reduced, the effective buffering effect is realized, the collision noise is effectively reduced, the reliability and the stability of the vehicle braking system 100 are effectively improved, and the service life of the vehicle braking system 100 can be further prolonged.
As a preferred embodiment, referring to fig. 3, the plurality of buffer portions 51 are provided at equal intervals in the circumferential direction of the second gear 22. Therefore, the impact force borne by each buffer part 51 can be equal, so that the damage of a certain buffer part 51 caused by overlarge impact force is avoided, and the overall stability of the buffer structure 5 is effectively ensured. For example, the number of the buffer portions 51 is three, and the three buffer portions 51 are provided at intervals of 120 °.
With reference to the embodiments shown in fig. 1, fig. 2 and fig. 4, the information acquisition system includes: displacement sensor and magnetite 62, displacement sensor sets up outside vehicle braking system 100's casing 101, and be connected with magnetite installing support 7 on the brake push rod 1, magnetite installing support 7 structure is "L" shape support, the straight section and the brake push rod 1 of magnetite installing support 7 are connected, and the mobilizable spacing setting of magnetite 62 is between the vertical section and the casing 101 of magnetite installing support 7, with firmly spacing magnetite 62 in the spout of casing 101, make magnetite 62 can smooth-going slip can accurate positioning again.
The displacement sensor is suitable for collecting displacement information of the magnet 62, and the magnet 62 is arranged on the magnet mounting bracket 7 connected with the brake push rod 1, so that the magnet 62 can move synchronously with the brake push rod 1, that is, the displacement sensor collects the displacement information of the magnet 62, which is equivalent to collecting the displacement information of the brake push rod 1, and the displacement sensor can transmit the collected displacement information to the electric control system, so that the electric control system drives the electric power-assisted system to start and operate.
Further, the magnet mounting bracket 7 is provided with a limiting structure 71, the limiting structure 71 may be configured as a limiting nut, and a part of the magnet mounting bracket 7 above the limiting structure 71 is sleeved with a bracket spring 72, and the magnet 62 is sleeved on the magnet mounting bracket 7 and presses the bracket spring 72. That is to say, there is the locating hole magnetite 62 bottom, magnetite 62 passes through the locating hole cover to be established in one of magnetite installing support 7, and have support spring 72 between magnetite 62 bottom and limit structure 71, make magnetite 62 hug closely on casing 101 through support spring 72's squeezing action, take place the phenomenon of card pause between the in-process that avoids magnetite 62 to remove and casing 101, thereby guaranteed the accuracy of displacement sensor collection magnetite 62's instantaneous displacement, in order to realize accurate braking, avoid the safety problem appearing when the braking.
With reference to the embodiment shown in fig. 1 and 2, the screw assembly 3 is disposed on one side of the magnet mounting bracket 7, the other side of the magnet mounting bracket 7 is provided with a support frame 8, the support frame 8 is sleeved on the brake push rod 1, the screw assembly 3 is adapted to push the support frame 8 so that the support frame 8 pushes the master cylinder piston 4 in the master cylinder 10 to establish pressure, and a return spring 81 is disposed between the support frame 8 and the master cylinder 10 to achieve the return of the screw assembly 3 after the braking is completed.
Wherein, having the breach of dodging that is used for dodging magnetite installing support 7 on the support frame 8, magnetite installing support 7 is suitable for the cooperation in dodging the breach to make support frame 8 can contact with screw rod support 32, and support frame 8 has still restricted magnetite installing support 7 and has done rotary motion, because magnetite installing support 7 is fixed mutually with brake push rod 1, consequently also restricted brake push rod 1's rotation to a certain extent.
With reference to the embodiments shown in fig. 1, 2 and 5, the vehicle braking system 100 further includes: the pedal simulator 9 and the brake push rod 1 are suitable for extruding the pedal simulator 9 to simulate the pedal feeling generated during braking, namely the invention adopts a mode of completely decoupling the treading force and the braking force to brake the vehicle, and utilizes the electric power-assisted system to brake the vehicle without utilizing the force of treading the brake pedal.
In this case, the pedal simulator 9 is designed in a multistage compression fashion. Therefore, the foot feeling comfort level of the driver during braking and treading the brake pedal can be effectively improved.
Further, as shown in fig. 1, 2 and 5, the pedal simulator 9 includes: the brake pedal device comprises a primary spring 91, a secondary spring 92 and a buffer partition plate 93 connected between the primary spring 91 and the secondary spring 92, wherein the primary spring 91 is arranged between one end, close to the brake pedal, of the brake push rod 1 and the buffer partition plate 93, the primary spring 91 is matched and abutted with a U-shaped fork through a spring stop 94, the secondary spring 92 is arranged between a second gear 22 and the buffer partition plate 93 in the gear transmission assembly, and the secondary spring 92 is matched and abutted with the second gear 22 through a spring base 95. Wherein the stiffness coefficient of the primary spring 91 is smaller than the stiffness coefficient of the secondary spring 92. Thus, the pedal simulator 9 achieves effective two-stage transient compression when the driver depresses the brake pedal.
Specifically, the secondary spring 92 has one end fixed to the spring seat 95 and the other end connected to the rubber-cushioned dash plate 93, and the primary spring 91 has one end connected to the dash plate 93 and the other end pressed by the spring stopper 94, so that the primary spring 91 and the secondary spring 92 are separated to form two independent compression spaces. Need less braking force at the driver initial stage of trampling the brake pedal, the one-level spring 91 compression produces less footboard and feels, and in the second half of braking, just need great braking force, the one-level spring 91 has pressed this moment and, spring backstop 94 presses on the rubber pad of buffer partition 93 to play effectual cushioning effect, transmit power to second grade spring 92 simultaneously, when the footboard power increases to a certain extent, second grade spring 92 compresses, produces great footboard sense, thereby realize second grade transition footboard and feels.
That is to say, through utilizing the two spring structures to realize the different footboard feelings of different helping hand stages to adopt rubber construction in the middle of two springs, with the abnormal sound that effectively reduces to trample the in-process and produce, thereby make and trample the process more comfortable steady.
Wherein, by adjusting the thickness of the spring stop 94, different pedal sensations can be adjusted to obtain the best comfortable pedal sensation.
The braking process of the vehicle braking system 100 under different operating conditions is described below with reference to fig. 1-5:
under normal operating conditions:
when a driver brakes during driving, the driver can step on a brake pedal, the brake push rod 1 moves forwards, the displacement sensor acquires displacement information of the brake push rod 1 by collecting displacement information of the magnet 62, then the displacement sensor transmits the collected displacement information to the electric control system, the electric control system can control the driving motor to drive the gear transmission assembly to operate according to the transmitted displacement information so as to transmit power to the screw assembly 3, then the screw assembly 3 converts rotation torque into linear motion to push the support frame 8, the support frame 8 extrudes the main cylinder piston 4 in the brake main cylinder 10, the main cylinder piston 4 generates hydraulic pressure and transmits the hydraulic pressure to the brake caliper through a pipeline, and braking force is formed, so that the whole vehicle brake is realized. Because the support frame 8 moves towards the master cylinder piston 4 while the brake push rod 1 moves towards the master cylinder piston 4, and the displacement of the support frame 8 is larger than that of the brake push rod 1, the ejector rod 11 of the brake push rod 1 and the master cylinder piston 4 are in a decoupling state, and braking force is not provided.
Under abnormal working conditions (the electric power-assisted system can not operate):
when a driver brakes in a running mode, the driver can step on a brake pedal, the brake push rod 1 moves forwards, the electric power assisting system cannot run, so that the brake is not involved in braking, the support frame 8 does not displace, and therefore the ejector rod 11 of the brake push rod 1 can be coupled with the main cylinder piston 4 to directly extrude the main cylinder piston 4 to build pressure, and braking is achieved.
A vehicle according to another aspect of the present invention includes the vehicle braking system 100 described in the above embodiments. Other configurations of the vehicle, such as transmissions, braking systems, steering systems, etc., are known in the art and well known to those skilled in the art, and therefore will not be described in detail herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A vehicle braking system (100), comprising:
the brake push rod (1), the said brake push rod (1) is connected with brake pedal;
an electric assist system, the electric assist system comprising: the brake system comprises a gear transmission assembly and a screw assembly (3), wherein the gear transmission assembly is in matched transmission with the screw assembly (3), the gear transmission assembly is suitable for driving the screw assembly (3) to translate so as to push a master cylinder piston (4) in a brake master cylinder (10) to build pressure, and the brake of a vehicle is realized, wherein at least one part of the gear transmission assembly is provided with a buffer structure (5) so as to realize a buffer effect between the screw assembly (3) and the gear transmission assembly;
the brake system comprises an information acquisition system and an electric control system, wherein the information acquisition system is used for acquiring displacement information of the brake push rod (1) and transmitting the displacement information to the electric control system, and the electric control system can control the electric power-assisted system to start and operate according to the displacement information.
2. The vehicle braking system (100) according to claim 1, wherein the screw assembly (3) comprises: cavity screw rod (31) and setting are in screw rod support (32) of cavity screw rod (31) one end, cavity screw rod (31) cover is established brake push rod (1) is last, the gear drive assembly includes: the buffer structure comprises a first gear and a second gear (22), the first gear is in transmission with a driving motor in the electric power assisting system, the second gear (22) is sleeved on the hollow screw (31) and in meshing transmission with the first gear and the hollow screw (31), and the buffer structure (5) is arranged on one side wall, close to the screw support (32), of the second gear (22).
3. The vehicle braking system (100) according to claim 2, characterized in that the buffer structure (5) comprises: a plurality of cushioning portions (51), each cushioning portion (51) comprising: the gear transmission mechanism comprises a mounting sleeve (511), a buffer spring (512) and a buffer ball (513), wherein a mounting groove (221) is formed in the second gear (22), the mounting sleeve (511) is mounted in the mounting groove (221) in a limiting mode, the buffer spring (512) is arranged in the mounting sleeve (511), the buffer ball (513) is rotatably limited between a port of the mounting sleeve (511) and a port of the mounting groove (221), the buffer ball (513) extrudes the buffer spring (512), and at least one part of the buffer ball (513) protrudes out of the mounting groove (221).
4. The vehicle brake system (100) according to claim 3, wherein a plurality of the buffer portions (51) are provided at equal intervals in a circumferential direction.
5. The vehicle braking system (100) according to claim 1, characterized in that the information acquisition system comprises: displacement sensor and magnetite (62), displacement sensor sets up outside casing (101) of vehicle braking system (100), be connected with magnetite installing support (7) on braking push rod (1), magnetite (62) mobilizable spacing setting is in magnetite installing support (7) with between casing (101), displacement sensor is suitable for the collection the displacement information of magnetite (62).
6. The vehicle braking system (100) according to claim 5, wherein the magnet mounting bracket (7) is provided with a limiting structure (71), a bracket spring (72) is sleeved on the magnet mounting bracket (7) at a part above the limiting structure (71), and the magnet (62) is sleeved on the magnet mounting bracket (7) and presses the bracket spring (72).
7. The vehicle brake system (100) according to claim 5, wherein the screw assembly (3) is disposed on one side of the magnet mounting bracket (7), a support bracket (8) is disposed on the other side of the magnet mounting bracket (7), the support bracket (8) is sleeved on the brake push rod (1), an avoidance gap is formed in the support bracket (8), the screw assembly (3) is suitable for pushing the support bracket (8) so that the support bracket (8) pushes a master cylinder piston (4) in the master cylinder (10) to build pressure, and a return spring (81) is disposed between the support bracket (8) and the master cylinder (10).
8. The vehicle braking system (100) of claim 1, further comprising: a pedal simulator (9), the brake push rod (1) is suitable for pressing the pedal simulator (9) to simulate the pedal feeling generated during braking, and the pedal simulator (9) is constructed in a multi-stage compression mode.
9. The vehicle braking system (100) according to claim 8, characterized in that the pedal simulator (9) comprises: one-level spring (91), secondary spring (92) and connect one-level spring (91) with buffer baffle (93) between secondary spring (92), one-level spring (91) set up be close to of brake push rod (1) brake pedal's one end with between buffer baffle (93), secondary spring (92) set up the gear drive assembly with between buffer baffle (93), wherein, the coefficient of stiffness of one-level spring (91) is less than the coefficient of stiffness of secondary spring (92).
10. A vehicle, characterized by comprising a vehicle braking system (100) according to any one of claims 1-9.
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| CN202010417857.9A CN111591273B (en) | 2020-05-18 | 2020-05-18 | Vehicle braking system and vehicle |
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| CN202010417857.9A CN111591273B (en) | 2020-05-18 | 2020-05-18 | Vehicle braking system and vehicle |
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| CN111591273A true CN111591273A (en) | 2020-08-28 |
| CN111591273B CN111591273B (en) | 2021-06-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112943589A (en) * | 2021-02-05 | 2021-06-11 | 东营市丰润通科技发展有限公司 | Single-cylinder oil production device of direct current electromagnetic pump for underground use |
| CN114043975A (en) * | 2021-11-03 | 2022-02-15 | 浙江吉利控股集团有限公司 | Braking force amplification device, braking system and vehicle |
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| WO2019214832A1 (en) * | 2018-05-09 | 2019-11-14 | Ipgate Ag | Helical gearing driven by electric motor for driving an adjusting element, and installation device |
| CN110962826A (en) * | 2019-12-04 | 2020-04-07 | 精诚工科汽车系统有限公司 | Electronic brake booster structure and vehicle brake energy recovery method |
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