CN112758070A - Vacuum booster assembly - Google Patents
Vacuum booster assembly Download PDFInfo
- Publication number
- CN112758070A CN112758070A CN202110005068.9A CN202110005068A CN112758070A CN 112758070 A CN112758070 A CN 112758070A CN 202110005068 A CN202110005068 A CN 202110005068A CN 112758070 A CN112758070 A CN 112758070A
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- Prior art keywords
- vacuum
- vacuum booster
- spring
- spring seat
- brake
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/24—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 fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/02—Dynamic electric resistor braking
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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
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a vacuum booster assembly, which comprises a vacuum booster and a brake master cylinder connected with the vacuum booster; the vacuum booster is provided with an output force ejector rod, a vacuum shell and a boosting push rod which is inserted in the vacuum shell in a sliding mode; the invention also discloses an automobile braking energy recovery system, which is characterized in that a spring seat and a spring part for simulating the force of a brake pedal are arranged on the vacuum booster, one end of the spring part abuts against the vacuum shell, the other end of the spring part is fixed on the spring seat, the spring part is clamped between the vacuum shell and the spring seat, the spring seat is fixed on the boosting push rod, a piston of a brake main cylinder is positioned in a vacuum cavity of the vacuum booster and positioned on a moving path of an output force ejector rod, and a gap is formed between the piston of the brake main cylinder and the vacuum booster. Belongs to the technical field of engines.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a vacuum booster assembly.
Background
The electric automobile has short endurance mileage, heavy battery and high cost, and the pain points seriously affect the popularization of the electric automobile. The consumption and energy consumption of the electric vehicle running in urban areas are high, and the recovery of braking energy is an important energy-saving measure for the electric vehicle. Compared with the traditional fuel vehicle, the electric vehicle is additionally provided with parts such as a battery, a motor and the like, when the vehicle decelerates, the motor is in a power generation state to brake the vehicle, and the braking energy is recovered to a rechargeable energy storage system (such as a battery) or used for vehicle-mounted accessories to work. When braking is carried out, the braking friction torque and the motor feedback torque are superposed and act on wheels to decelerate the vehicle, and as the invalid clearance of the traditional hydraulic braking circuit is smaller, in order to ensure the driving comfort of a driver (the target braking deceleration is close to the actual deceleration), the motor feedback torque is set to be smaller and generally needs to be less than 0.1G, and the contribution rate of braking energy recovery to the endurance mileage is only about 10%.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to: the invention provides a vacuum booster assembly which can fully utilize the feedback torque of an engine, support high braking energy recovery and improve the cruising ability of an automobile.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vacuum booster assembly comprises a vacuum booster and a brake master cylinder connected with the vacuum booster; the vacuum booster is provided with an output force ejector rod, a vacuum shell and a boosting push rod which is inserted on the vacuum shell in a sliding mode;
the vacuum booster is provided with a spring seat and a spring part for simulating the force of a brake pedal, one end of the spring part is abutted against the vacuum shell, the other end of the spring part is fixed on the spring seat, the spring part is clamped between the vacuum shell and the spring seat, the spring seat is fixed on the boosting push rod, a piston of the brake main cylinder is located in a vacuum cavity of the vacuum booster and located on a moving path of the output force ejector rod, and a gap is formed between the piston of the brake main cylinder and the vacuum booster.
Further, the spring part comprises a rubber cylinder sleeved on the power-assisted push rod and a columnar spring sleeved on the rubber cylinder; one end of the rubber cylinder and one end of the columnar spring are both fixed on the vacuum shell, and the other end of the rubber cylinder and the other end of the columnar spring are both fixedly connected with the spring seat.
Further, the cylindrical spring is embedded in the rubber cylinder.
Furthermore, a first rod hole is formed in the spring seat, and the power-assisted push rod penetrates through the first rod hole and is fixedly connected with the spring seat.
Furthermore, a convex ring is arranged on the vacuum shell, the diameter of the convex ring is smaller than the inner diameter of the rubber cylinder, the rubber cylinder is fixedly sleeved on the convex ring, a sliding valve body is arranged in the convex ring, and the rubber cylinder is sleeved on the sliding valve body.
Furthermore, a dust cover is fixedly arranged on the vacuum shell; the dust cover is sleeved on the rubber barrel, the spring seat is arranged in the dust cover in a sliding mode, a second rod hole in the dust cover is formed, and the power-assisted push rod extends into the dust cover from the second rod hole and is connected with the spring seat.
Further, the edge of the second rod hole is provided with a limiting ring for preventing the spring seat from sliding out of the second rod hole.
An automobile braking energy recovery system comprises the vacuum booster assembly, a brake pedal connected with a boosting push rod, a hydraulic unit connected with a brake main cylinder, wheels connected with the hydraulic unit, a storage battery, a motor electrically connected with the storage battery, and a speed reducer connected with the output end of the motor; the output end of the speed reducer is connected with the wheels.
Further, the automobile braking energy recovery system also comprises a motor controller, a master controller in signal connection with the motor controller, and a reversible motor controller in signal connection with the master controller; the master controller is in signal connection with the hydraulic unit, and the storage battery is in signal connection with the master controller through the reversible motor controller.
Furthermore, the automobile braking energy recovery system also comprises a displacement sensor arranged on a braking pedal; and the displacement sensor is in signal connection with the master controller.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a vacuum booster with a decoupling clearance and a brake pedal feel simulator, wherein when the moving stroke of a brake main cylinder push rod of the vacuum booster is smaller than the decoupling clearance, a hydraulic brake system does not build pressure, namely when the brake deceleration is smaller than the set limit, the hydraulic brake system does not build hydraulic pressure, no hydraulic feedback force exists on a brake pedal, and the brake pedal force is completely simulated by the brake pedal feel simulator, so that the situation that the brake pedal cannot be stepped on is ensured. At the moment, the speed reduction of the wheels of the automobile is realized by the feedback torque of the motor, and the force of the brake pedal is completely simulated by the brake pedal sense simulator before the decoupling gap is eliminated. The hydraulic braking does not participate in the light braking of the brake main cylinder, the feedback torque of the engine can be fully utilized, the braking energy consumption is reduced, and the endurance contribution rate is improved. The automobile braking energy recovery system supports high braking energy recovery, generally can reach about 0.3G, and the endurance mileage contribution rate can be improved to about 20%.
Drawings
FIG. 1 is a schematic view of a vacuum booster assembly.
Fig. 2 is an enlarged view at a of fig. 1.
FIG. 3 is a schematic diagram of a braking energy recovery system of an automobile.
Fig. 4 is a graph of brake pedal force versus brake deceleration.
In the figure, 1 is a vacuum booster, 2 is a brake master cylinder, 3 is a spring seat, 4 is a spring part, 5 is a decoupling gap, 6 is a brake pedal, 7 is a hydraulic unit, 8 is a wheel, 9 is a storage battery, 10 is a motor, 11 is a speed reducer, 12 is a motor controller, 13 is a master controller, 14 is a reversible motor controller, 15 is a displacement sensor, and 16 is a dust cover;
1-1 is an output force ejector rod, 1-2 is a power-assisted push rod, 1-3 is a vacuum shell, 1-4 is a vacuum cavity, 1-5 is a convex ring, 1-6 is a sliding valve body, 2-1 is a piston, 2-2 is a groove, 4-1 is a rubber cylinder, 4-2 is a columnar spring, 16-1 is a sliding cavity, and 16-2 is a limit ring.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For convenience of description, unless otherwise noted, the up-down direction described below coincides with the up-down direction of fig. 1 itself, and the left-right direction described below coincides with the left-right direction of fig. 1 itself.
As shown in fig. 1 to 4, the present embodiment provides a vacuum booster assembly including a vacuum booster 1 and a master cylinder connected to the vacuum booster 1; the vacuum booster 1 is provided with an output force ejector rod 1-1, a vacuum shell 1-3 and a boosting push rod 1-2 which is inserted in the vacuum shell 1-3 in a sliding manner; the vacuum booster 1 is provided with an output force ejector rod 1-1, a boosting push rod 1-2 and a vacuum cavity 1-4, wherein the output force ejector rod 1-1 is connected with a piston 2-1 of a brake main cylinder 2, the boosting push rod 1-2 is connected with a brake pedal 6 (the prior art), and the structure of the vacuum booster 1 can refer to a patent CN201720620926. X.
The vacuum booster 1 is provided with a spring seat 3 and a spring part 4 for simulating the force of a brake pedal, one end of the spring part 4 is abutted against a vacuum shell 1-3, the other end of the spring part 4 is fixed on the spring seat 3, the spring part 4 is clamped between the vacuum shell 1-3 and the spring seat 3, the spring seat 3 is fixed on a boosting push rod 1-2, a piston 2-1 of a brake main cylinder 2 is positioned in a vacuum cavity 1-4 of the vacuum booster 1 and on a moving path of an output force ejector rod 1-1, and a gap is formed between the piston 2-1 of the brake main cylinder 2 and the vacuum booster 1. The boosting push rod 1-2, the spring seat 3 and the spring piece 4 jointly form a brake pedal feeling simulator. The spring seat 3 is fixedly connected with the boosting push rod 1-2 and is arranged on the vacuum shell 1-3 in a sliding mode, and the spring part 4 is clamped between the vacuum shell 1-3 and the spring seat 3. When the boosting push rod 1-2 pushes the output force ejector rod to approach to the piston 2-1 of the brake master cylinder 2, the spring seat 3 compresses the spring part 4. The piston 2-1 of the brake master cylinder 2 is positioned in the vacuum cavity 1-4 of the vacuum booster 1 and on the moving path of the output force ejector rod, and a gap is arranged between the piston 2-1 of the brake master cylinder 2 and the vacuum booster 1. This gap is the decoupling gap 5. The damping of the brake pedal simulator is set according to the requirements of the brake pedal force-brake deceleration curve. The curve of brake pedal force-brake deceleration is shown in fig. 4, when the brake deceleration is less than the set limit (0.3G), the hydraulic brake system does not build hydraulic pressure, and there is no hydraulic feedback force on the brake pedal 6, and the brake pedal force at this moment is completely simulated by the inventive brake pedal feel simulator (the pedal feel characteristic needs to be satisfied), so as to ensure the comfort of the brake pedal. When the stroke of the boosting push rod 1-2 pushing the push rod of the brake master cylinder 2 is smaller than the decoupling gap 5, the hydraulic brake system of the automobile does not build pressure, the deceleration of the wheels 8 is completed by the feedback torque of the motor 10, and the force of the brake pedal 6 is completely simulated by the brake pedal sense simulator before the decoupling gap 5 is eliminated. When the invention is lightly braked, the hydraulic brake of the automobile is not participated, the feedback torque of the engine can be fully utilized, the high brake energy recovery is completely realized by a mechanical structure, and the mechanical structure has higher reliability compared with an electrical structure.
Specifically, in one embodiment, the distance of the decoupling gap 5 is about 10mm, the value of the decoupling gap 5 is set by the maximum feedback torque of the motor 10 of the automobile, and the feedback torque of the motor 10 is slightly smaller than the maximum value (0.28G) before the decoupling gap 5 is eliminated. During braking, most of braking deceleration is less than 0.3G, and the decoupling gap 5 is arranged, so that most of braking deceleration is completely realized by the feedback torque of the motor 10, the braking energy consumption is reduced, and the endurance contribution rate is improved.
Specifically, in one embodiment, the piston 2-1 of the master cylinder 2 is positioned in the vacuum cavity 1-4 of the vacuum booster 1, the piston 2-1 of the master cylinder 2 is provided with a groove 2-2, and the output push rod of the vacuum booster 1 extends into the groove 2-2 and has a gap with the inner wall of the groove 2-2. The piston 2-1 of the brake main cylinder 2 extends and retracts left and right in the horizontal direction, the output force ejector rod 1-1 is located on the right side of the piston 2-1 of the brake main cylinder 2 and moves left and right, the groove 2-2 is formed in the tail end (right end) of the piston 2-1 of the brake main cylinder 2, the left end of the output force ejector rod 1-1 extends into the groove 2-2, and the piston 2-1 of the brake main cylinder 2 is ensured to be in the moving direction of the output force push rod. A decoupling gap 5 exists between the bottom wall (left end) of the groove 2-2 and the left end of the output force ejector rod 1-1.
Specifically, in one embodiment, the groove 2-2 has a top end (right end) provided with a notch and a bottom wall (left end) in the extending direction of the output push rod, and the bottom wall of the groove 2-2 is spherical. The tail end of the output force ejector rod is provided with a hemisphere, and the diameter of the hemisphere is equal to that of the bottom wall of the groove 2-2. The sphere center of the spherical surface is positioned on the axis of the piston 2-1 of the brake master cylinder 2, when the brake pedal 6 is treaded down with force, the output force ejector rod can accurately abut against the stress point of the piston 2-1 of the brake master cylinder 2 (the center of the end surface of the piston 2-1), so that the piston 2-1 of the brake master cylinder 2 can move rapidly along the axis direction, rapid braking is realized, and the sensitivity and the safety of braking are improved.
Specifically, in one embodiment, the spring element 4 comprises a rubber tube 4-1 sleeved on the boosting push rod 1-2 and a columnar spring 4-2 sleeved on the rubber tube 4-1; one end of the rubber cylinder 4-1 and one end of the columnar spring 4-2 are both fixed on the vacuum shell 1-3, and the other end of the rubber cylinder 4-1 and the other end of the columnar spring 4-2 are both fixedly connected with the spring seat 3. The rubber tube 4-1 is a rubber spring which can be stretched and deformed when stressed, and the original shape can be recovered after the external force is removed. The cylindrical spring 4-2 is a metal spring, and the rubber cylinder 4-1 and the cylindrical spring 4-2 form a composite rubber spring. The pure metal spring has high rigidity, high noise, poor spring force stability and poor brake pedal feel. The rigidity adjusting range of the composite rubber spring is large, the working noise is low, the stability of the spring force is good, and the comfortable operating force of the brake pedal 6 is ensured.
Specifically, in one embodiment, the rubber cylinder 4-1 and the cylindrical spring 4-2 are non-linearly designed. Because the stress of the brake pedal 6 is required to be increased nonlinearly, the nonlinear spring force of the compounded rubber spring can ensure good brake pedal feel.
Specifically, in one embodiment, the cylindrical spring 4-2 is embedded within the rubber cylinder 4-1. The cylindrical spring 4-2 is embedded into the rubber tube 4-1 from the outer circumferential side surface of the rubber tube 4-1, so that the deformation of the cylindrical spring 4-2 and the deformation of the rubber tube 4-1 can be synchronous, and the sensitivity of the brake pedal feel simulator is ensured.
Specifically, in one embodiment, the depth of the cylindrical spring 4-2 radially embedded into the rubber tube 4-1 is 0.25-0.35 times the thickness of the rubber tube 4-1, which can ensure that the deformation of the cylindrical spring 4-2 and the rubber tube 4-1 can be synchronous, and the cylindrical spring 4-2 has a certain wrapping force on the rubber tube 4-1, so as to prevent the radial deformation of the rubber tube 4-1 and ensure the axial extension and contraction of the rubber tube 4-1.
Specifically, in one embodiment, the spring seat 3 is provided with a first rod hole, and the power-assisted push rod 1-2 penetrates through the first rod hole and is fixedly connected with the sliding block. When the power-assisted push rod 1-2 moves, the slide plate can be pushed to compress the spring part 4.
Specifically, in one embodiment, a convex ring 1-5 is arranged on a vacuum shell 1-3, the diameter of the convex ring 1-5 is smaller than the inner diameter of a rubber cylinder 4-1, the left end of the rubber cylinder 4-1 is fixedly sleeved on the convex ring 1-5, a sliding valve body 1-6 is arranged in the convex ring 1-5, and the rubber cylinder 4-1 is sleeved on the sliding valve body 1-6. The left end of the sliding valve body 1-6 is arranged in the convex ring 1-5, and the right end of the sliding valve body 1-6 is arranged in the rubber cylinder 4-1. The rubber cylinder 4-1 is sleeved on the sliding valve body 1-6 and the convex ring 1-5 at the same time, and the sliding valve body 1-6 and the convex ring 1-5 are abutted against the inner wall of the rubber cylinder 4-1 at the same time.
Specifically, in one embodiment, a sealing ring is arranged between the sliding valve body 1-6 and the convex ring 1-5.
Specifically, in one embodiment, a dust cover 16 is further fixed on the vacuum casing 1-3; the dust cover 16 is sleeved on the rubber tube 4-1, the spring seat 3 is arranged in the dust cover 16 in a sliding mode, a second rod hole in the dust cover 16 is formed, and the power-assisted push rod 1-2 extends into the dust cover 16 from the second rod hole and is connected with the spring seat 3. A sliding cavity 16-1 is arranged in the dust cover 16, and the spring seat 3 is arranged in the sliding cavity 16-1 in a sliding way. The dust cover 16 limits the spring seat 3 to slide up and down, so that the spring seat 3 can only move left and right in the sliding cavity 16-1. The spring seat 3, the spring piece 4 and the convex ring 1-5 are all positioned in the sliding cavity 16-1. The boosting push rod 1-2 extends into the sliding cavity 16-1 from the second rod hole to be connected with the sliding plate.
Specifically, in one embodiment, the rubber cylinder 4-1 has a first section sleeved on the convex ring 1-5 and a second section fixedly connected with the spring seat 3, the inner diameter of the first section is smaller than that of the second section, and the cylindrical spring 4-2 is embedded in the second section. The inner diameter of the first section is equal to the diameter of the convex ring 1-5 and is fixedly sleeved on the convex ring 1-5, and the sliding valve body 1-6 is abutted against the inner wall of the second section.
Specifically, in one embodiment, the dust cover 16 is cylindrical, the dust cover 16 is a rubber member, and the outer circumferential side of the dust cover 16 is corrugated, so that the dust cover 16 has a certain elastic deformability.
Specifically, in one embodiment, the edge of the second rod hole is provided with a retainer ring 16-2 for preventing the spring seat 3 from slipping out of the second rod hole.
An automobile braking energy recovery system comprises the vacuum booster assembly, a brake pedal 6 connected with a boosting push rod 1-2, a hydraulic unit 7 connected with a brake main cylinder 2, wheels 8 connected with the hydraulic unit 7, a storage battery 9, a motor 10 electrically connected with the storage battery 9 and a speed reducer 11 connected with the output end of the motor 10; the output end of the reducer 11 is connected with the wheel 8. When low-intensity braking is carried out, the output force ejector rod is not in contact with the piston 2-1 of the brake master cylinder 2, pressure is not built in a loop (ESC) of the hydraulic unit 7, and the speed reduction of the wheel 8 is completely realized by the torque feedback of the motor 10. The invention uses the feedback torque of the motor 10 to charge the battery to the utmost extent to realize the back-dragging braking, thereby improving the contribution rate of the endurance mileage. The invention has the advantages of small change amount of the traditional vacuum booster 1, low cost and simple structure.
Specifically, in one embodiment, the automobile braking energy recovery system further includes a motor controller 12, a general controller 13 in signal connection with the motor controller 12, and a reversible motor controller 14 in signal connection with the general controller 13; the main controller 13 is in signal connection with the hydraulic unit 7, and the storage battery 9 is in signal connection with the main controller 13 through the reversible motor controller 14.
Specifically, in one embodiment, the automobile braking energy recovery system further comprises a displacement sensor 15 mounted on the brake pedal 6; the displacement sensor 15 is in signal connection with the overall controller 13. A displacement sensor 15 is additionally arranged on the brake pedal 6 to detect the displacement of the brake pedal 6, and the feedback braking torque of the motor 10 is increased in proportion to the displacement. The proportional increasing relation of the feedback torque of the motor 10 ensures that the braking requirement is consistent with the braking requirement of a driver, and the controllability of the vehicle is ensured.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A vacuum booster assembly comprises a vacuum booster and a brake master cylinder connected with the vacuum booster; the vacuum booster is provided with an output force ejector rod, a vacuum shell and a boosting push rod which is inserted on the vacuum shell in a sliding mode;
the method is characterized in that: the vacuum booster is provided with a spring seat and a spring part for simulating the force of a brake pedal, one end of the spring part is abutted against the vacuum shell, the other end of the spring part is fixed on the spring seat, the spring part is clamped between the vacuum shell and the spring seat, the spring seat is fixed on the boosting push rod, a piston of the brake main cylinder is located in a vacuum cavity of the vacuum booster and located on a moving path of the output force ejector rod, and a gap is formed between the piston of the brake main cylinder and the vacuum booster.
2. A vacuum booster assembly as set forth in claim 1 wherein: the spring part comprises a rubber cylinder sleeved on the power-assisted push rod and a columnar spring sleeved on the rubber cylinder; one end of the rubber cylinder and one end of the columnar spring are both fixed on the vacuum shell, and the other end of the rubber cylinder and the other end of the columnar spring are both fixedly connected with the spring seat.
3. A vacuum booster assembly as set forth in claim 2 wherein: the cylindrical spring is embedded in the rubber cylinder.
4. A vacuum booster assembly as set forth in claim 1 wherein: and a first rod hole is formed in the spring seat, and the power-assisted push rod penetrates through the first rod hole and is fixedly connected with the spring seat.
5. A vacuum booster assembly as set forth in claim 3 wherein: the vacuum shell is provided with a convex ring, the diameter of the convex ring is smaller than the inner diameter of the rubber cylinder, the rubber cylinder is fixedly sleeved on the convex ring, a sliding valve body is arranged in the convex ring, and the rubber cylinder is sleeved on the sliding valve body.
6. A vacuum booster assembly as set forth in claim 5 wherein: a dust cover is fixedly arranged on the vacuum shell; the dust cover is sleeved on the rubber barrel, the spring seat is arranged in the dust cover in a sliding mode, a second rod hole in the dust cover is formed, and the power-assisted push rod extends into the dust cover from the second rod hole and is connected with the spring seat.
7. A vacuum booster assembly as set forth in claim 6 wherein: and a limiting ring for preventing the spring seat from sliding out of the second rod hole is arranged at the edge of the second rod hole.
8. An automobile braking energy recovery system is characterized in that: the brake booster comprises a vacuum booster assembly as claimed in any one of claims 1-2, a brake pedal connected with the boosting push rod, a hydraulic unit connected with the brake master cylinder, wheels connected with the hydraulic unit, a storage battery, a motor electrically connected with the storage battery, and a speed reducer connected with an output end of the motor; the output end of the speed reducer is connected with the wheels.
9. The automotive braking energy recovery system of claim 8, wherein: the motor controller is connected with the motor controller through signals, and the reversible motor controller is connected with the master controller through signals; the master controller is in signal connection with the hydraulic unit, and the storage battery is in signal connection with the master controller through the reversible motor controller.
10. The automotive braking energy recovery system of claim 9, wherein: the brake device also comprises a displacement sensor arranged on the brake pedal; and the displacement sensor is in signal connection with the master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005068.9A CN112758070A (en) | 2021-01-04 | 2021-01-04 | Vacuum booster assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005068.9A CN112758070A (en) | 2021-01-04 | 2021-01-04 | Vacuum booster assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112758070A true CN112758070A (en) | 2021-05-07 |
Family
ID=75699081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110005068.9A Withdrawn CN112758070A (en) | 2021-01-04 | 2021-01-04 | Vacuum booster assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112758070A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522108A (en) * | 1980-09-12 | 1985-06-11 | Nissin Kogyo Kabushiki Kaisha | Vacuum booster device |
| CN2051316U (en) * | 1989-02-24 | 1990-01-17 | 吴万才 | Helical combined rubber spring |
| US20070024110A1 (en) * | 2005-07-29 | 2007-02-01 | Toyota Jidosha Kabushiki Kaisha | Brake apparatus for a vehicle |
| CN202279101U (en) * | 2011-09-06 | 2012-06-20 | 上海中科深江电动车辆有限公司 | Servo braking system for four-wheel drive electric automobile |
| CN207450978U (en) * | 2017-11-15 | 2018-06-05 | 宁夏天地西北煤机有限公司 | Triple buffer material receiving device |
-
2021
- 2021-01-04 CN CN202110005068.9A patent/CN112758070A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4522108A (en) * | 1980-09-12 | 1985-06-11 | Nissin Kogyo Kabushiki Kaisha | Vacuum booster device |
| CN2051316U (en) * | 1989-02-24 | 1990-01-17 | 吴万才 | Helical combined rubber spring |
| US20070024110A1 (en) * | 2005-07-29 | 2007-02-01 | Toyota Jidosha Kabushiki Kaisha | Brake apparatus for a vehicle |
| CN202279101U (en) * | 2011-09-06 | 2012-06-20 | 上海中科深江电动车辆有限公司 | Servo braking system for four-wheel drive electric automobile |
| CN207450978U (en) * | 2017-11-15 | 2018-06-05 | 宁夏天地西北煤机有限公司 | Triple buffer material receiving device |
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Application publication date: 20210507 |