CN111605533B - Working method of automobile power system - Google Patents
Working method of automobile power system Download PDFInfo
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- CN111605533B CN111605533B CN202010482002.4A CN202010482002A CN111605533B CN 111605533 B CN111605533 B CN 111605533B CN 202010482002 A CN202010482002 A CN 202010482002A CN 111605533 B CN111605533 B CN 111605533B
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- Prior art keywords
- rod
- brake
- connecting rod
- guide
- assembly
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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
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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
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/04—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting mechanically
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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
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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
- B60T13/746—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 and mechanical transmission of the braking action
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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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- 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
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Elements And Transmission Devices (AREA)
- Braking Systems And Boosters (AREA)
Abstract
A working method of an automobile power system comprises a vehicle head sensor, a control unit, a brake pedal, a sensor assembly, a fixing plate, a brake piston assembly, a brake pad, a brake disc, a first switch, a throttle valve, a servo motor, a second switch, an accelerator connecting rod, an accelerator pedal, an accelerator sensor, an amplifier and a connecting rod type power-assisted brake assembly; the connecting rod type power-assisted brake assembly comprises a first elastic component, a mandril, a push rod, a plunger, a brake pedal connecting rod, a second elastic component, a guide rod, a longitudinal pin, a connecting rod component, a linear motor, a sliding support, a brake main cylinder, a piston, a first neck, an L-shaped cavity, a ball head, an opening, a second neck, an outer guide surface, an upper sliding groove, a transverse pin, an inner guide surface, an underframe, a supporting block, a guide frame, an inner hole and a guide sleeve; the working method comprises the following steps: an anti-misoperation method, a power-assisted braking method and an emergency braking method.
Description
Technical Field
The invention relates to the field of vehicle brakes, in particular to a working method of an automobile power system.
Background
The transportation industry is the life line of the market economy, and vehicles occupy an important position in the life and production of people. The vehicle is one of important vehicles, and the vehicle generally includes a hydraulic brake system for reducing the speed of the vehicle or stopping the vehicle, so as to control the distance between vehicles and the speed of the vehicle and ensure the safety performance of the vehicle during running. The hydraulic brake system in the prior art is composed of a brake pedal, a hydraulic oil cylinder, a brake disc, a brake pad and the like, and comprises a series of sensors for adjusting feedback and providing a buffer device for adjusting vibration in a brake.
In the conventional brake, there are the following problems:
in the existing brake, the brake pedal directly controls the brake, and manpower is a laborious thing to control the brake pedal.
To address the issue of manual control, some prior art systems provide power-assisted brakes that increase the weight of the vehicle due to the complexity and use of large components. Such as the braking system that patent CN105857283A proposed, it adopts worm gear and rack and pinion as the drive mechanism, and this kind of scheme, the efficiency of transmission is lower, and the performance requirement to the motor is higher, also does not contribute to cost saving and energy-conservation of car. The electric power-assisted brake based on the ball screw mechanism, such as the CN103129546A patent, has complex structure processing and installation, high cost and difficult popularization.
In the prior art, the power-assisted brake fails to provide redundant brake backup for a brake system, and when a motor fails, the backup brake force is insufficient.
The prior art booster brake has a problem of complicated structure even if a portable structure such as a connecting rod is used, and two transmission systems of a pedal brake and a booster brake are faced.
In the prior art, power-assisted braking and pedal braking are neglected, and a powerful and stable pedal driving transmission path is lacked.
The prior art power brakes involve complicated gear mechanisms which, however, have a guiding requirement, but it is not possible to design a guide for each gear part, since space is not allowed.
In the prior art, when emergency danger avoiding braking or overspeed braking is carried out, the problem that an accelerator is used as a brake is not expected, and serious accidents can occur.
Disclosure of Invention
In order to solve the technical problems, the invention provides a working method of an automobile power system, wherein the automobile power system comprises a vehicle head sensor, a vehicle speed sensor, a control unit, a brake pedal, a sensor assembly, a fixing plate, a brake piston assembly, a brake pad, a brake disc, a first switch, a throttle valve, a servo motor, a second switch, an accelerator connecting rod, an accelerator pedal, an accelerator sensor, an amplifier and a connecting rod type power-assisted brake assembly; the connecting rod type power-assisted brake assembly comprises a first elastic component, a mandril, a push rod, a plunger, a brake pedal connecting rod, a second elastic component, a guide rod, a longitudinal pin, a connecting rod component, a linear motor, a sliding support, a brake main cylinder, a piston, a first neck, an L-shaped cavity, a ball head, an opening, a second neck, an outer guide surface, an upper sliding groove, a transverse pin, an inner guide surface, an underframe, a supporting block, a guide frame, an inner hole and a guide sleeve; the plunger comprises a pressing surface, a pressing ring, a ring wall, a sleeve and a push block; a transverse hole is formed in the longitudinal pin; the connecting rod assembly comprises a first rod, a second rod, a third rod, a fourth rod, a fifth rod and a sixth rod; the working method comprises the following steps: an anti-misoperation method, a power-assisted braking method and an emergency braking method;
the accelerator pedal outputs motion through an accelerator connecting rod, the accelerator sensor is connected with the accelerator connecting rod to sense displacement, the accelerator sensor is simultaneously connected with the amplifier, the other end of the amplifier is connected with the control unit, the control unit controls the linear motor through a first switch, and controls the servo motor through a second switch to open and close the throttle valve; the control unit is simultaneously connected with the sensor assembly;
the anti-misoperation method comprises the following steps: when the vehicle head sensor detects that the distance between the vehicle body and the obstacle is within a dangerous distance, the control unit controls the second switch to be switched off and the first switch to be switched on, and meanwhile, the signal transmitted by the accelerator sensor is used as a basis to control the linear motor to output braking power; when the vehicle speed sensor detects that the vehicle speed is greater than a preset vehicle speed, the control unit controls the second switch to be switched off and the first switch to be switched on, and simultaneously controls the linear motor to output brake power by taking a signal transmitted by the accelerator sensor as a basis;
the brake pedal connecting rod is driven by a brake pedal to move axially along a first axial line, the linear motor drives the connecting rod assembly to generate brake assistance, and the connecting rod assembly is used for outputting the brake assistance; a ball head is arranged at one end of the brake pedal connecting rod and wrapped in a sleeve of the plunger, and the plunger sequentially comprises a push block, a sleeve, a compression ring and a ring wall from left to right; the outer diameter of the sleeve is smaller than that of the push block, the right end of the sleeve radially extends out of the compression ring, and the outer edge of the compression ring extends out of the ring wall rightwards; the left end of the compression ring forms the compression surface;
the right side part of the push rod is a second neck part with a reduced diameter, the push block is accommodated in the second neck part, and the L-shaped cavity is defined by the second neck part and the plunger; a circular groove is formed in the left end face of the push rod, the ejector rod is arranged in the circular groove, the left end of the ejector rod is connected with the piston, and the piston moves in the brake master cylinder; the push rod slides in the sliding support, the right part of the sliding support is a first neck part which is reduced in diameter, and the lower side of the first neck part is provided with an opening; the distance between the pressing surface and the left end face of the push block is L2, the length of the push block accommodating part of the second neck part is L1, and L1> L2 so that the pressing surface can press the second neck part to assist in transmitting braking force; the annular wall is matched and connected with the second neck part, and the annular wall is in clearance fit with the second neck part so as to communicate the L-shaped cavity with the outside;
an output shaft of the linear motor is connected with one end of the sixth rod, the other end of the sixth rod is connected with one end of the fifth rod, the other end of the fifth rod is simultaneously connected with one end of the fourth rod and one end of the second rod through a hinge point, the second rod is an actuating rod, and the other end of the second rod penetrates through the opening to be connected with the second neck portion, so that the push rod is driven to move; the other end of the fourth rod is connected with one end of the third rod, the other end of the third rod is connected with one end of the first rod, the other end of the first rod is connected with one end of the guide rod, and the guide rod is arranged in the guide frame;
an arc-shaped outer guide surface is arranged above the guide frame to accommodate and guide the brake pedal connecting rod, a sliding groove extending along the first axis is arranged at the bottom of the outer guide surface to accommodate the longitudinal pin, a round-hole-shaped inner guide surface is arranged inside the guide frame to accommodate the guide rod, the support block is supported above the bottom wall of the guide frame and is connected with the underframe and the guide frame through the support of the support block, the longitudinal pin is arranged in the middle of the underframe, holes are formed in the side wall of the guide frame to allow the transverse pin to pass through, the length of the transverse pin is smaller than the diameter of the round-hole-shaped inner guide surface, the transverse hole in the longitudinal pin is used for accommodating the transverse pin, and an inner hole is arranged at the lower part of the brake pedal connecting rod to accommodate the longitudinal pin;
the power-assisted braking method comprises the following steps: the control unit judges whether the linear motor fails or not, if not, a normal braking mode is started, and when a brake pedal is pressed down, the sensor assembly senses displacement and force corresponding to the movement of a brake pedal connecting rod and transmits a signal to the control unit, so that the control unit judges a braking requirement and controls the linear motor to output power, the push rod is driven to move through the connecting rod assembly, the piston is driven to move in a brake main cylinder, and oil pressure is output to control the brake piston assembly to move so as to enable the brake pad to be combined with the brake disc;
the emergency braking method comprises the following steps: the control unit judges whether the linear motor fails or not, and starts an emergency braking mode when the judgment result is yes; the booster brake assembly further comprises a longitudinal driving rod to push the longitudinal pin, the longitudinal pin moves upwards to penetrate through the bottom wall of the guide frame, the guide rod and the sliding groove to enter an inner hole of the brake pedal connecting rod, the transverse pin moves to penetrate through the guide rod and the transverse hole, and the longitudinal driving rod is withdrawn downwards; when the brake pedal is pressed down, the brake pedal connecting rod drives the longitudinal pin to move in the sliding groove, so that the guide rod is driven to move to output power; when the brake pedal is pressed for a certain distance, the pressing surface is contacted with the push rod to output power.
Furthermore, an amplifier is also arranged between the sensor assembly and the control unit, and the vehicle head sensor is positioned on a front bumper of the vehicle body.
Further, the power-assisted brake assembly further comprises a transverse driving rod to push the transverse pin.
Further, the lateral driving lever is locked to or unlocked from the lateral pin by a rotational engagement.
Further, the linear motor is a non-self-locking motor.
Further, the sensor assembly is connected to the brake pedal link for detecting a degree of pedal braking, thereby starting operation of the linear motor at an initial braking stage and interrupting operation of the linear motor at an end braking stage.
Furthermore, a guide sleeve is fixedly arranged at the lower part of the guide frame so as to guide the movement of the longitudinal pin.
Furthermore, the lengths of the connecting rods in the connecting rod assemblies are different.
Furthermore, the ejector rod consists of a disc part and a rod part which are integrally connected.
Further, a groove extending along the first axis is disposed between the annular wall and the second neck portion to form a clearance fit.
The invention has the beneficial effects that:
aiming at the 1 st point and the 2 nd point of the background technology, a portable connecting rod mechanism is adopted for transmission assistance, the weight of the whole equipment is saved, the complexity is reduced, and the transmission efficiency is guaranteed through reasonable structural design.
Aiming at the 3 rd point of the background technology, the adopted lever mechanism has two operation modes of a working mode and an emergency mode, the link mechanism can be acted by the linear motor to generate braking assistance in the working mode, manual braking force is transmitted to the braking executing element by the link mechanism in the emergency mode, and the auxiliary force is provided by fewer parts, so that redundant braking backup is provided for a hydraulic braking system.
Aiming at the 3 rd point of the background art, the specific improvement of the emergency mode is as follows: the motor is a non-self-locking motor, and the linkage of a transverse pin and a longitudinal pin is adopted to enable the manual braking force to be linked with the power assisting system.
Aiming at the 4 th point of the background technology, the scheme of combining two sets of connecting rod input mechanisms into one set of output mechanism is adopted, so that the space is saved, the efficiency is improved, and the number of components is reduced.
Aiming at the 5 th point of the background technology, the braking force output by the pedal is utilized to a greater extent through the arrangement of the pressing surface, so that in a power-assisted braking system, the manual braking force can be transmitted more stably and more efficiently in an emergency state.
Aiming at the 6 th point of the background technology, one part is used for playing a role in double guiding, so that the space is saved, the number of parts is reduced, and the structure is simplified.
Aiming at the 7 th point of the background technology, an accelerator/brake switching system for preventing misoperation is provided, and the accelerator is prevented from being used as a brake by mistake.
Note: the foregoing designs are not sequential, each of which provides a distinct and significant advance in the present invention over the prior art.
Drawings
Fig. 1 is an overall structural view of a link type power-assisted brake assembly.
FIG. 2 is a partial view of the transmission portion of the linked power-assisted brake assembly.
FIG. 3 is a side view of a guide portion of the linked booster brake assembly.
FIG. 4 is a schematic diagram of the powertrain of the present invention.
FIG. 5 is a flow chart of the operation of the power-assisted brake.
In the figures, the reference numerals are as follows:
1. a first elastic member; 2. a top rod; 3. a push rod; 4. a plunger; 5. a brake pedal link; 6. a second elastic member; 7. a guide bar; 8. a longitudinal pin; 9. a first lever; 10. a second lever; 11. a third lever; 12. a fourth bar; 13. a fifth lever; 14. a sixth rod; 15. a linear motor; 16. a sliding support; 17. a brake master cylinder; 18. a piston; 19. a first neck portion; 20. a compression surface; 21. an L-shaped cavity; 22. a compression ring; 23. an annular wall; 24. a sleeve; 25. a ball head; 26. an opening; 27. a push block; 28. a second neck portion; 29. an outer guide surface; 30. an upper chute; 31. a transverse pin; 32. an inner guide surface; 33. a transverse hole; 34. a chassis; 35. a support block; 36. a guide frame; 37. an inner bore; 38. a guide sleeve; 39. a brake pedal; 40. a sensor assembly; 41. a fixing plate; 42. a brake piston assembly; 43. a brake pad; 44. a brake disc; 45. a first switch; 46. a throttle valve; 47. a servo motor; 48. a second switch; 49. an accelerator connecting rod; 50. an accelerator pedal; 51. an accelerator sensor; 52. an amplifier; 53. a control unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the figure: a working method of an automobile power system comprises a vehicle head sensor, a vehicle speed sensor, a control unit, a brake pedal, a sensor assembly, a fixing plate, a brake piston assembly, a brake pad, a brake disc, a first switch, a throttle valve, a servo motor, a second switch, an accelerator connecting rod, an accelerator pedal, an accelerator sensor, an amplifier and a connecting rod type power-assisted brake assembly; the connecting rod type power-assisted brake assembly comprises a first elastic component, a mandril, a push rod, a plunger, a brake pedal connecting rod, a second elastic component, a guide rod, a longitudinal pin, a connecting rod component, a linear motor, a sliding support, a brake main cylinder, a piston, a first neck, an L-shaped cavity, a ball head, an opening, a second neck, an outer guide surface, an upper sliding groove, a transverse pin, an inner guide surface, an underframe, a supporting block, a guide frame, an inner hole and a guide sleeve; the plunger comprises a pressing surface, a pressing ring, a ring wall, a sleeve and a push block; a transverse hole is formed in the longitudinal pin; the connecting rod assembly comprises a first rod, a second rod, a third rod, a fourth rod, a fifth rod and a sixth rod; the working method comprises the following steps: an anti-misoperation method, a power-assisted braking method and an emergency braking method;
the accelerator pedal outputs motion through an accelerator connecting rod, the accelerator sensor is connected with the accelerator connecting rod to sense displacement, the accelerator sensor is simultaneously connected with the amplifier, the other end of the amplifier is connected with the control unit, the control unit controls the linear motor through a first switch, and controls the servo motor through a second switch to open and close the throttle valve; the control unit is simultaneously connected with the sensor assembly;
the anti-misoperation method comprises the following steps: when the vehicle head sensor detects that the distance between the vehicle body and the obstacle is within a dangerous distance, the control unit controls the second switch to be switched off and the first switch to be switched on, and meanwhile, the signal transmitted by the accelerator sensor is used as a basis to control the linear motor to output braking power; when the vehicle speed sensor detects that the vehicle speed is greater than a preset vehicle speed, the control unit controls the second switch to be switched off and the first switch to be switched on, and simultaneously controls the linear motor to output brake power by taking a signal transmitted by the accelerator sensor as a basis;
as shown in the figure: the brake pedal connecting rod is driven by a brake pedal to move axially along a first axial line, the linear motor drives the connecting rod assembly to generate brake assistance, and the connecting rod assembly is used for outputting the brake assistance; a ball head is arranged at one end of the brake pedal connecting rod and wrapped in a sleeve of the plunger, and the plunger sequentially comprises a push block, a sleeve, a compression ring and a ring wall from left to right; the outer diameter of the sleeve is smaller than that of the push block, the right end of the sleeve radially extends out of the compression ring, and the outer edge of the compression ring extends out of the ring wall rightwards; the left end of the compression ring forms the compression surface;
the right side part of the push rod is a second neck part with a reduced diameter, the push block is accommodated in the second neck part, and the L-shaped cavity is defined by the second neck part and the plunger; a circular groove is formed in the left end face of the push rod, the ejector rod is arranged in the circular groove, the left end of the ejector rod is connected with the piston, and the piston moves in the brake master cylinder; the push rod slides in the sliding support, the right part of the sliding support is a first neck part which is reduced in diameter, and the lower side of the first neck part is provided with an opening; the distance between the pressing surface and the left end face of the push block is L2, the length of the push block accommodating part of the second neck part is L1, and L1> L2 so that the pressing surface can press the second neck part to assist in transmitting braking force; the annular wall is matched and connected with the second neck part, and the annular wall is in clearance fit with the second neck part so as to communicate the L-shaped cavity with the outside;
as shown in the figure: an output shaft of the linear motor is connected with one end of the sixth rod, the other end of the sixth rod is connected with one end of the fifth rod, the other end of the fifth rod is simultaneously connected with one end of the fourth rod and one end of the second rod through a hinge point, the second rod is an actuating rod, and the other end of the second rod penetrates through the opening to be connected with the second neck portion, so that the push rod is driven to move; the other end of the fourth rod is connected with one end of the third rod, the other end of the third rod is connected with one end of the first rod, the other end of the first rod is connected with one end of the guide rod, and the guide rod is arranged in the guide frame;
an arc-shaped outer guide surface is arranged above the guide frame to accommodate and guide the brake pedal connecting rod, a sliding groove extending along the first axis is arranged at the bottom of the outer guide surface to accommodate the longitudinal pin, a round-hole-shaped inner guide surface is arranged inside the guide frame to accommodate the guide rod, the support block is supported above the bottom wall of the guide frame and is connected with the underframe and the guide frame through the support of the support block, the longitudinal pin is arranged in the middle of the underframe, holes are formed in the side wall of the guide frame to allow the transverse pin to pass through, the length of the transverse pin is smaller than the diameter of the round-hole-shaped inner guide surface, the transverse hole in the longitudinal pin is used for accommodating the transverse pin, and an inner hole is arranged at the lower part of the brake pedal connecting rod to accommodate the longitudinal pin;
the power-assisted braking method comprises the following steps: the control unit judges whether the linear motor fails or not, if not, a normal braking mode is started, and when a brake pedal is pressed down, the sensor assembly senses displacement and force corresponding to the movement of a brake pedal connecting rod and transmits a signal to the control unit, so that the control unit judges a braking requirement and controls the linear motor to output power, the push rod is driven to move through the connecting rod assembly, the piston is driven to move in a brake main cylinder, and oil pressure is output to control the brake piston assembly to move so as to enable the brake pad to be combined with the brake disc;
the emergency braking method comprises the following steps: the control unit judges whether the linear motor fails or not, and starts an emergency braking mode when the judgment result is yes; the booster brake assembly further comprises a longitudinal driving rod to push the longitudinal pin, the longitudinal pin moves upwards to penetrate through the bottom wall of the guide frame, the guide rod and the sliding groove to enter an inner hole of the brake pedal connecting rod, the transverse pin moves to penetrate through the guide rod and the transverse hole, and the longitudinal driving rod is withdrawn downwards; when the brake pedal is pressed down, the brake pedal connecting rod drives the longitudinal pin to move in the sliding groove, so that the guide rod is driven to move to output power; when the brake pedal is pressed for a certain distance, the pressing surface is contacted with the push rod to output power.
As shown in the figure: an amplifier is also arranged between the sensor assembly and the control unit, and the vehicle head sensor is positioned on a front bumper of the vehicle body. The booster brake assembly further includes a transverse drive bar to push the transverse pin. The transverse driving rod is locked or unlocked with the transverse pin through rotary clamping. The linear motor is a non-self-locking motor. The sensor assembly is connected with the brake pedal connecting rod and is used for detecting the brake degree of the pedal, so that the work of the linear motor is started in the initial brake stage, and the work of the linear motor is interrupted in the final brake stage. And a guide sleeve is fixedly arranged at the lower part of the guide frame so as to guide the movement of the longitudinal pin. The connecting rods in the connecting rod assemblies are different in length. The ejector rod is composed of a disc part and a rod part which are integrally connected. A groove extending along the first axis is disposed between the annular wall and the second neck portion to form a clearance fit.
Compared with the conventional power assisting device, the connecting rod type power assisting brake assembly can provide redundant brake backup for a hydraulic brake system, is simple in mechanism and high in transmission efficiency, and helps a vehicle to stop running under any deceleration condition through mechanical power assistance.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The working method of the automobile power system is characterized in that: the automobile power system comprises a head sensor, a speed sensor, a control unit, a brake pedal, a sensor assembly, a fixing plate, a brake piston assembly, a brake pad, a brake disc, a first switch, a throttle valve, a servo motor, a second switch, an accelerator connecting rod, an accelerator pedal, an accelerator sensor, an amplifier and a connecting rod type power-assisted brake assembly; the connecting rod type power-assisted brake assembly comprises a first elastic component, a mandril, a push rod, a plunger, a brake pedal connecting rod, a second elastic component, a guide rod, a longitudinal pin, a connecting rod component, a linear motor, a sliding support, a brake main cylinder, a piston, a first neck, an L-shaped cavity, a ball head, an opening, a second neck, an outer guide surface, an upper sliding groove, a transverse pin, an inner guide surface, an underframe, a supporting block, a guide frame, an inner hole and a guide sleeve; the plunger comprises a pressing surface, a pressing ring, a ring wall, a sleeve and a push block; a transverse hole is formed in the longitudinal pin; the connecting rod assembly comprises a first rod, a second rod, a third rod, a fourth rod, a fifth rod and a sixth rod;
the accelerator pedal outputs motion through an accelerator connecting rod, the accelerator sensor is connected with the accelerator connecting rod to sense displacement, the accelerator sensor is simultaneously connected with the amplifier, the other end of the amplifier is connected with the control unit, the control unit controls the linear motor through a first switch, and controls the servo motor through a second switch to open and close the throttle valve; the control unit is simultaneously connected with the sensor assembly;
the brake pedal connecting rod is driven by a brake pedal to move axially along a first axial line, the linear motor drives the connecting rod assembly to generate brake assistance, and the connecting rod assembly is used for outputting the brake assistance; a ball head is arranged at one end of the brake pedal connecting rod and wrapped in a sleeve of the plunger, and the plunger sequentially comprises a push block, a sleeve, a compression ring and a ring wall from left to right; the outer diameter of the sleeve is smaller than that of the push block, the right end of the sleeve radially extends out of the compression ring, and the outer edge of the compression ring extends out of the ring wall rightwards; the left end of the compression ring forms the compression surface;
the right side part of the push rod is a second neck part with a reduced diameter, the push block is accommodated in the second neck part, and the L-shaped cavity is defined by the second neck part and the plunger; a circular groove is formed in the left end face of the push rod, the ejector rod is arranged in the circular groove, the left end of the ejector rod is connected with the piston, and the piston moves in the brake master cylinder; the push rod slides in the sliding support, the right part of the sliding support is a first neck part which is reduced in diameter, and the lower side of the first neck part is provided with an opening; the distance between the pressing surface and the left end face of the push block is L2, the length of the push block accommodating part of the second neck part is L1, and L1> L2 so that the pressing surface can press the second neck part to assist in transmitting braking force; the annular wall is matched and connected with the second neck part, and the annular wall is in clearance fit with the second neck part so as to communicate the L-shaped cavity with the outside;
an output shaft of the linear motor is connected with one end of the sixth rod, the other end of the sixth rod is connected with one end of the fifth rod, the other end of the fifth rod is simultaneously connected with one end of the fourth rod and one end of the second rod through a hinge point, the second rod is an actuating rod, and the other end of the second rod penetrates through the opening to be connected with the second neck portion, so that the push rod is driven to move; the other end of the fourth rod is connected with one end of the third rod, the other end of the third rod is connected with one end of the first rod, the other end of the first rod is connected with one end of the guide rod, and the guide rod is arranged in the guide frame;
an arc-shaped outer guide surface is arranged above the guide frame to accommodate and guide the brake pedal connecting rod, a sliding groove extending along the first axis is arranged at the bottom of the outer guide surface to accommodate the longitudinal pin, a round-hole-shaped inner guide surface is arranged inside the guide frame to accommodate the guide rod, the support block is supported above the bottom wall of the guide frame and is connected with the underframe and the guide frame through the support of the support block, the longitudinal pin is arranged in the middle of the underframe, holes are formed in the side wall of the guide frame to allow the transverse pin to pass through, the length of the transverse pin is smaller than the diameter of the round-hole-shaped inner guide surface, the transverse hole in the longitudinal pin is used for accommodating the transverse pin, and an inner hole is arranged at the lower part of the brake pedal connecting rod to accommodate the longitudinal pin;
the working method comprises the following steps: an anti-misoperation method, a power-assisted braking method and an emergency braking method;
the anti-misoperation method comprises the following steps: when the vehicle head sensor detects that the distance between the vehicle body and the obstacle is within a dangerous distance, the control unit controls the second switch to be switched off and the first switch to be switched on, and meanwhile, the signal transmitted by the accelerator sensor is used as a basis to control the linear motor to output braking power; when the vehicle speed sensor detects that the vehicle speed is greater than a preset vehicle speed, the control unit controls the second switch to be switched off and the first switch to be switched on, and simultaneously controls the linear motor to output brake power by taking a signal transmitted by the accelerator sensor as a basis;
the power-assisted braking method comprises the following steps: the control unit judges whether the linear motor fails or not, if not, a normal braking mode is started, and when a brake pedal is pressed down, the sensor assembly senses displacement and force corresponding to the movement of a brake pedal connecting rod and transmits a signal to the control unit, so that the control unit judges a braking requirement and controls the linear motor to output power, the push rod is driven to move through the connecting rod assembly, the piston is driven to move in a brake main cylinder, and oil pressure is output to control the brake piston assembly to move so as to enable the brake pad to be combined with the brake disc;
the emergency braking method comprises the following steps: the control unit judges whether the linear motor fails or not, and starts an emergency braking mode when the judgment result is yes; the booster brake assembly further comprises a longitudinal driving rod to push the longitudinal pin, the longitudinal pin moves upwards to penetrate through the bottom wall of the guide frame, the guide rod and the sliding groove to enter an inner hole of the brake pedal connecting rod, the transverse pin moves to penetrate through the guide rod and the transverse hole, and then the longitudinal driving rod exits downwards; when the brake pedal is pressed down, the brake pedal connecting rod drives the longitudinal pin to move in the sliding groove, so that the guide rod is driven to move to output power; when the brake pedal is pressed for a certain distance, the pressing surface is contacted with the push rod to output power.
2. The method of operating an automotive power system according to claim 1, characterized in that: an amplifier is also arranged between the sensor assembly and the control unit, and the vehicle head sensor is positioned on a front bumper of the vehicle body.
3. The method of operating an automotive power system according to claim 1, characterized in that: the booster brake assembly further includes a transverse drive bar to push the transverse pin.
4. A method of operating an automotive power system according to claim 3, characterized in that: the transverse driving rod is locked or unlocked with the transverse pin through rotary clamping.
5. The method of operating an automotive power system according to claim 1, characterized in that: the linear motor is a non-self-locking motor.
6. The method of operating an automotive power system according to claim 1, characterized in that: the sensor assembly is connected with the brake pedal connecting rod and is used for detecting the brake degree of the pedal, so that the work of the linear motor is started in the initial brake stage, and the work of the linear motor is interrupted in the final brake stage.
7. The method of operating an automotive power system according to claim 1, characterized in that: and a guide sleeve is fixedly arranged at the lower part of the guide frame so as to guide the movement of the longitudinal pin.
8. The method of operating an automotive power system according to claim 1, characterized in that: the connecting rods in the connecting rod assemblies are different in length.
9. The method of operating an automotive power system according to claim 1, characterized in that: the ejector rod is composed of a disc part and a rod part which are integrally connected.
10. The method of operating an automotive power system according to claim 1, characterized in that: a groove extending along the first axis is disposed between the annular wall and the second neck portion to form a clearance fit.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367378A (en) * | 2007-08-17 | 2009-02-18 | 株式会社日立制作所 | Brake control device and method |
| WO2013180107A1 (en) * | 2012-05-28 | 2013-12-05 | 株式会社アドヴィックス | Vehicle brake device |
| CN103640564A (en) * | 2013-11-29 | 2014-03-19 | 宁波圣龙汽车动力系统股份有限公司 | Vacuum boosting brake system |
| CN203543949U (en) * | 2013-09-18 | 2014-04-16 | 吉林大学 | Anti-misoperation throttle and brake pedal integrated device |
| CN104002676A (en) * | 2014-06-04 | 2014-08-27 | 温州大学 | Automobile accelerator wrong-pressing judgment method based on DSP2812 controller |
| DE102014217433A1 (en) * | 2014-09-01 | 2016-03-03 | Robert Bosch Gmbh | Brake booster for a brake system of a vehicle |
| CN106394521A (en) * | 2015-07-30 | 2017-02-15 | 罗伯特·博世有限公司 | Actuator system for self-driving vehicles |
| CN107672577A (en) * | 2017-11-01 | 2018-02-09 | 拿森汽车科技南通有限公司 | A kind of Electric brake booster for automobile |
| CN109895625A (en) * | 2019-04-01 | 2019-06-18 | 长沙理工大学 | A kind of distribution hydraulic drive vehicle energy recycling system |
| CN209535034U (en) * | 2018-09-21 | 2019-10-25 | 芜湖伯特利电子控制系统有限公司 | The line traffic control brake fluid system of redundancy EPB auxiliary control |
| CN210062952U (en) * | 2019-06-12 | 2020-02-14 | 吉林大学 | Brake simulator with failure protection function and adjustable pedal feeling |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202491799U (en) * | 2012-01-12 | 2012-10-17 | 北京特冶工贸有限责任公司 | Full-automatic train connection air valve |
| CN109895624B (en) * | 2019-04-01 | 2021-11-16 | 长沙理工大学 | Four-wheel hydraulic drive vehicle energy recovery system |
-
2020
- 2020-06-01 CN CN202010482002.4A patent/CN111605533B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367378A (en) * | 2007-08-17 | 2009-02-18 | 株式会社日立制作所 | Brake control device and method |
| WO2013180107A1 (en) * | 2012-05-28 | 2013-12-05 | 株式会社アドヴィックス | Vehicle brake device |
| CN203543949U (en) * | 2013-09-18 | 2014-04-16 | 吉林大学 | Anti-misoperation throttle and brake pedal integrated device |
| CN103640564A (en) * | 2013-11-29 | 2014-03-19 | 宁波圣龙汽车动力系统股份有限公司 | Vacuum boosting brake system |
| CN104002676A (en) * | 2014-06-04 | 2014-08-27 | 温州大学 | Automobile accelerator wrong-pressing judgment method based on DSP2812 controller |
| DE102014217433A1 (en) * | 2014-09-01 | 2016-03-03 | Robert Bosch Gmbh | Brake booster for a brake system of a vehicle |
| CN106394521A (en) * | 2015-07-30 | 2017-02-15 | 罗伯特·博世有限公司 | Actuator system for self-driving vehicles |
| CN107672577A (en) * | 2017-11-01 | 2018-02-09 | 拿森汽车科技南通有限公司 | A kind of Electric brake booster for automobile |
| CN209535034U (en) * | 2018-09-21 | 2019-10-25 | 芜湖伯特利电子控制系统有限公司 | The line traffic control brake fluid system of redundancy EPB auxiliary control |
| CN109895625A (en) * | 2019-04-01 | 2019-06-18 | 长沙理工大学 | A kind of distribution hydraulic drive vehicle energy recycling system |
| CN210062952U (en) * | 2019-06-12 | 2020-02-14 | 吉林大学 | Brake simulator with failure protection function and adjustable pedal feeling |
Non-Patent Citations (1)
| Title |
|---|
| 基于驾驶员意图识别的电动汽车电机制动失效监控系统研究;王姝等;《公路交通科技》;20161231;第33卷(第12期);第145-153页 * |
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