CN110552979A - Electronic mechanical hydraulic line control brake - Google Patents
Electronic mechanical hydraulic line control brake Download PDFInfo
- Publication number
- CN110552979A CN110552979A CN201910800311.9A CN201910800311A CN110552979A CN 110552979 A CN110552979 A CN 110552979A CN 201910800311 A CN201910800311 A CN 201910800311A CN 110552979 A CN110552979 A CN 110552979A
- Authority
- CN
- China
- Prior art keywords
- brake
- piston
- small piston
- curved surface
- caliper body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band brakes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3475—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using solenoids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/14—Mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2123/00—Multiple operation forces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/06—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
- F16D2125/28—Cams; Levers with cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
Abstract
The invention relates to an electronic mechanical hydraulic line control brake, which comprises a motor, a transmission mechanism, a cam, a large piston, a small piston, a hydraulic system and the like. The motor drives the cam to rotate through the transmission mechanism, the large piston and the brake caliper body are driven to move in opposite directions through the hydraulic system, the friction plates are pressed tightly by the same force from two sides of the brake disc, and meanwhile, the influences possibly caused by the failure of the hydraulic system and the long-time continuous braking work are avoided. The invention has simple structure, reliable work and high braking efficiency, can automatically adjust the braking clearance, compensate the influence caused by the abrasion of the friction plate, simplify the design of a control system and can be used for service braking and parking braking.
Description
Technical Field
The invention relates to the field of brakes, in particular to a wire-controlled mechanical brake which can replace the existing floating caliper disc type hydraulic brake, realize that friction plates clamp a brake disc from two sides with the same pressure in an electric control mechanical hydraulic mode, and realize adjustable brake clearance and adjustable brake strength, in particular to an electronic mechanical hydraulic wire-controlled brake.
Background
The brake-by-wire technology is a novel brake technology appearing in recent years, a control system receives information of a sensor to control a motor to work without depending on mechanical or hydraulic connection between a brake and a brake pedal, and stable and reliable brake control of an automobile is realized. At present, there are two main types of electronic hydraulic brake systems (EHB) and electronic mechanical brake systems (EMB). The brake-by-wire system is beneficial to optimizing the braking performance of the whole vehicle, and can be conveniently integrated with other electronic control systems such as ABS, ASR, ESP and the like, so that the system has wide development space.
The electronic hydraulic brake system (EHB) is formed by transforming the traditional hydraulic brake system, the braking process is quicker and more stable, the braking safety and the comfort of an automobile are improved, but the hydraulic part is kept, and the characteristics of hydraulic oil pressure establishment, pressure oil flow energy transfer and the like still exist, so the electronic hydraulic brake system does not have all the advantages of a complete wire control brake system, and is generally regarded as an advanced product of an electronic mechanical brake system (EMB).
An electronic mechanical brake system (EMB) drives a mechanical mechanism through a motor to realize a braking process, so that the structure of the brake system is greatly simplified, and the brake is easier to arrange, assemble and overhaul. However, the conventional electromechanical braking system often lacks a function of automatically adjusting the braking clearance at the brake part, so that the problem that the efficiency of a brake actuator is variable under the conditions of external environment change and friction plate abrasion of the brake is caused, and certain difficulty is brought to the control of the braking efficiency. Meanwhile, when the mechanical transmission part needs to realize a larger transmission ratio, the mechanical transmission part often has the conditions of larger size, higher space requirement and the like, so that most of brakes have the problems of more complex structure, larger installation size and the like.
Disclosure of Invention
The invention aims to provide an electromechanical hydraulic brake-by-wire. The invention has the advantages of simple structure, reliable work and the like, can realize the automatic adjustment of the brake clearance, utilizes the advantages of small space, large transmission ratio and the like of the hydraulic system by the matching of the hydraulic system and the mechanical system, simultaneously avoids the phenomena of sensitivity reduction and the like caused by the problems of the flow of hydraulic oil, pressure establishment and the like in the hydraulic system, and also carries out structural design aiming at the conditions of failure of the hydraulic system, long-time continuous braking and the like.
The technical scheme for realizing the purpose of the invention is as follows:
The electro-mechanical hydraulic line control brake comprises a motor, a transmission mechanism, a cam, a large piston, a large sealing ring, a small piston, a liquid supplementing tank, a one-way valve, a pressure limiting valve, a throttling hole, a brake caliper body, a brake disc and a friction plate; the method is characterized in that: the friction plates are symmetrically arranged on two sides of the brake disc, one friction plate is arranged on the large piston, and the other friction plate is arranged on the brake caliper body; the motor is connected with a power input element of the transmission mechanism, and a power output element of the transmission mechanism is connected with the cam; the cam is a groove cam and is matched with the small piston/brake caliper body; the small piston is arranged on the brake caliper body, one end of the small piston is connected with the cam, and the other end of the small piston comprises a curved surface structure with a certain slope; the large piston is arranged in an installation hole on the brake caliper body through the large sealing ring, one end of the large piston is provided with the friction plate, and the other end of the large piston is provided with a curved surface structure corresponding to the curved surface structure of the small piston; a hydraulic cavity is arranged between the curved surface end of the large piston and the curved surface end of the small piston; the hydraulic cavity is connected with the liquid supplementing tank through the one-way valve; the hydraulic cavity is connected with the liquid supplementing tank through the pressure limiting valve, and the throttling hole is arranged between the pressure limiting valve and the hydraulic cavity.
The curved surface end of the large piston is in direct contact fit with the curved surface end of the small piston to form a contact curved surface.
The clearance between the big piston and the mounting hole on the brake caliper body is larger than the feedback of the deformation between the contact curved surface of the big piston and the small piston from the contact of the friction plate and the brake disc to the generation of the maximum braking efficiency in the braking work and smaller than the feedback of the free clearance between the friction plate and the brake disc on the contact curved surface of the big piston and the small piston, namely, when the brake works under the condition that the curved surface end of the big piston and the small piston are contacted, the friction plate is contacted with the brake disc, and the relative movement is generated on the curved surface between the big piston and the small piston due to the action of friction force, so that the self-energizing effect is realized, and when the maximum braking strength is reached, the big piston is not contacted with the mounting hole. When the friction plate and the brake disc are contacted due to impurities or unevenness between the friction plate and the brake disc, relative movement can be generated on the curved surface between the large piston and the small piston, and the large piston is contacted with the mounting hole before the free gap is completely eliminated, so that the self-boosting effect can not occur.
The curved contact surface between the large piston and the small piston can be a slope, a circular arc surface, a hyperbolic surface, a parabolic surface and the like or a combination of the above curved surfaces.
When no transmission link with zero reverse efficiency exists in the transmission mechanism, parking braking under the condition of power failure of the motor is realized by adopting a locking mechanism, the locking mechanism adopts an electromagnetic brake or an electric control mechanical braking device and can be disconnected when being powered on, a transmission element in a transmission link is fixed when the power failure occurs, the pressure between the friction plate and the brake disc is kept, and the parking braking function is realized; when the transmission mechanism is provided with a transmission link with the reverse efficiency of zero, the parking brake can be realized by using the locking mechanism, and the parking brake under the condition of motor power failure can also be realized by using the transmission link with the reverse efficiency of zero and incapable reverse transmission of power and motion.
The cam is supported on the brake caliper body and is matched with the small piston; or the cam is supported on the small piston and is matched with the brake caliper body for installation.
The device also comprises a roller mechanism which is adopted at the position where the large piston is matched with the small piston in a curved surface manner so as to reduce the friction resistance.
And a sealing device is arranged between the small piston and the brake caliper body.
And a roller structure is adopted between the small piston and the cam and between the brake caliper body and the cam, so that the friction resistance is reduced, and the working efficiency of the system is improved.
Drawings
Fig. 1 is a front view of a first embodiment of an electro-mechanical hydraulic brake-by-wire of the present invention.
Fig. 2 is a front view of a second embodiment of the electromechanical hydraulic brake-by-wire of the present invention.
The description is marked in the drawings: 1-brake caliper body 2-grooved cam 3-worm wheel 4-driving gear 5-mandrel 6-small piston 7-worm 8-liquid supplement tank 9-locking wheel 10-motor 11-motor shaft 12-electromagnetic brake 13-small sealing ring 14-large piston 15-friction plate 16-brake disc 17-one-way valve 18-pressure limiting valve 19-driven gear 20-electromagnetic coil 21-return spring 22-locking pin 23-large sealing ring 24-orifice 24
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1.
As shown in figure 1, the electronic mechanical hydraulic line control brake comprises a brake caliper body (1), a brake disc (16) is arranged in a jaw of the brake caliper body (1), friction plates (15) are arranged on two sides of the brake disc (16), one is arranged on the brake caliper body (1), the other is arranged on a large piston (14), the large piston (14) is arranged on the brake caliper body (1) through a large sealing ring (23), the other end of the large piston (14) is provided with an inclined surface and is oppositely arranged with a small piston (6) with the same inclined surface, the small piston (6) is arranged on the brake caliper body (1) through a small sealing ring (13), the other end of the small piston (6) is arranged in a matched mode with a groove cam (2), and the brake caliper body (1) is arranged on the other side of the groove cam (2) in a matched mode. The center of the groove cam (2) is fixedly connected with the worm wheel (3) through the mandrel (5), and the worm (7) which is matched with the worm wheel (3) to work is driven by the motor (10). A hydraulic cavity is arranged between the large piston (14) and the small piston (6), and the acting area of the small piston (6) on the hydraulic cavity is smaller than that of the large piston (14) on the hydraulic cavity. The hydraulic cavity is connected with the liquid replenishing tank (8) through a one-way valve (17), meanwhile, the hydraulic cavity is connected with the liquid replenishing tank (8) through a pressure limiting valve (18), and an orifice (24) is arranged between the pressure limiting valve (18) and the hydraulic cavity.
When the brake works, the motor (10) drives the worm gear mechanism to rotate to drive the groove cam (2) to rotate, the groove cam (2) pushes the brake caliper body (1) to move rightwards, the small piston (6) moves leftwards, the pressure in the hydraulic cavity is increased, the large piston (14) is pushed to move leftwards, the friction plates (15) on two sides are driven to compress the brake disc (16), and the efficient and reliable brake effect is realized. When the brake is released, the motor (10) drives the worm gear mechanism to rotate reversely to drive the groove cam (2) to rotate reversely, so that the small piston (6) and the brake caliper body (1) move relatively to restore the initial position, the elastic potential energy stored in the large sealing ring (23) is released to return the large piston (14), and all elements restore the initial position.
When the friction plate (15) is abraded and the thickness is reduced, and the brake is in work, the motor (10) drives the groove cam (2) to rotate through the worm gear mechanism, the large piston (14)/the small piston (6) and the brake caliper body (1) are pushed to move relatively through the hydraulic system, when the elastic deformation of the large sealing ring (23) reaches the maximum, the brake effect is poor due to abrasion of the friction plate (15), at the moment, the motor (10) drives the groove cam (2) to continue to rotate, namely, the large piston (14) continues to move relative to the large sealing ring (13) under the action of hydraulic pressure until the required brake strength is obtained. When braking is relieved, the motor (10) drives the groove cam (2) to rotate reversely to drive the small piston (6) and the brake caliper body (1) to move relatively and return, elastic potential energy of the large sealing ring (23) is released, the large piston (14) moves relative to the brake caliper body (1) and returns to a balance position, due to abrasion of the friction plate, pressure in the hydraulic cavity is reduced, the one-way valve (17) is opened, and oil flows into the hydraulic cavity from the liquid supplementing tank (8) to compensate volume change caused by abrasion of the friction plate. The return of the large piston (14) is realized by a large sealing ring (23) which is the same as that of the traditional hydraulic disc brake, so that the brake clearance is kept consistent with that before abrasion, and the automatic adjustment of the brake clearance is realized.
When the hydraulic system fails and pressure cannot be built in the hydraulic cavity, the motor (10) can drive the groove cam (2) to enable the small piston (6) to be in direct contact with the large piston (14) through the curved surface end, and the friction plates (15) are pushed to press the brake disc (16) from two sides. When the friction plate (15) contacts with the brake disc (16) to generate friction force, the large piston (14) moves relative to the small piston (6) due to the friction force and the action of the curved surfaces between the large piston and the small piston, so that the self-energizing effect is realized, and larger braking strength can be obtained by using smaller motor power. When the maximum braking strength is reached, the large piston (14) is not in contact with the mounting hole.
When the brake is continuously operated for a long time, the temperature of the brake rises to cause the pressure in the hydraulic cavity to rise, and when the pressure rises to a certain value, the pressure limiting valve (18) is opened to avoid damage. The orifice (24) is used to eliminate the effect of pressure fluctuations.
When parking braking is needed, the motor (10) drives the friction plate (15) to press the brake disc (16) to meet the requirement of parking braking, and parking braking under the condition that the motor (10) is powered off is realized by using a worm and gear transmission mechanism with zero reverse efficiency. Or the parking brake function is realized by using a locking mechanism.
The embodiment of fig. 2 differs from the embodiment of fig. 1 mainly as follows:
The transmission mechanisms are different, a worm gear mechanism is adopted for transmission in the attached drawing 1, a mandrel (5) fixedly connected with a worm wheel (3) is a power output element of the transmission mechanism and is fixedly connected with a groove cam (2); in the attached figure 2, a gear mechanism is adopted for transmission, and a mandrel (5) fixedly connected with a driven gear (19) is a power output element of the transmission mechanism and is fixedly connected with a groove cam (2).
The parking braking function is realized in different modes, in the attached figure 1, when a worm gear mechanism with zero reverse efficiency is adopted, the parking braking function can be realized by directly utilizing the worm gear mechanism, and also can be realized by utilizing a locking mechanism, namely the electromagnetic brake, the electric control mechanical braking device and the like; in the attached figure 2, the parking braking mode is shown, wherein the motor shaft (11) is released when the electromagnetic brake (12) is electrified, and the motor shaft (11) is locked when the motor (10) is powered off, and the parking braking mode is also shown, wherein the electromagnetic coil (20) is electrified, the locking pin (22) is under the action of electromagnetic force, and the return spring (21) is compressed, so that the locking pin (22) is not in contact with the locking wheel (9), and the braking or the releasing of the brake is not influenced; when parking braking is needed, the motor (10) drives the friction plate (15) to press the brake disc (16) to meet the parking braking requirement, then the electromagnetic coil (20) is powered off, the locking pin (22) is inserted into the teeth of the locking wheel (9) under the elastic force action of the return spring (21), the parking braking effect is kept, and the parking braking function under the condition that the motor (10) is powered off can be achieved.
The structure and the movement characteristics are different, in the attached figure 1, the groove cam (2) is simultaneously contacted with the small piston (6) and the brake caliper body (1), the groove cam (2) generates pushing strokes in two directions (the small piston and the brake caliper body) when rotating, and the installation, the positioning and the movement states of the groove cam are relatively independent from the brake caliper body (1) and are not mutually influenced; in the attached figure 2, a working groove of a groove cam (2) is only matched with a small piston (6), the groove cam (2) only generates a pushing lift in one direction when rotating, a lift curve can be made into an axisymmetric form, such as an eccentric wheel and the like, or an asymmetric form, a corresponding lift curve is only arranged on a working surface for driving the small piston, the groove cam (2) is supported on a brake caliper body (1) through a mandrel (5), and in the working process, the groove cam (2) moves together with the brake caliper body (1) besides the movement around the axis of the groove cam (2).
The braking operation process and the clearance adjustment method of the second embodiment are basically the same as those of the first embodiment, and detailed description is omitted here.
In the second embodiment, the electric control mechanical brake device can also directly act on the driving gear (4) or the driven gear (19), and a similar parking brake effect can be obtained.
The transmission mechanism can adopt other transmission modes such as direct transmission, lever transmission, inhaul cable transmission, chain transmission, belt transmission, planetary gear transmission and the like or the combination of the transmission modes except a dead axle gear mechanism and a worm and gear mechanism, and the locking mechanism can also realize the locking function by acting a locking pin on other gears or a special locking ratchet wheel integrated with the gears or installing a ratchet wheel and pawl mechanism on a motor shaft. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention belong to the protection scope of the present invention.
The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and changes are intended to be included within the scope of the invention.
Claims (9)
1. An electronic mechanical hydraulic line control brake comprises a motor, a transmission mechanism, a cam, a large piston, a large sealing ring, a small piston, a liquid supplementing tank, a one-way valve, a pressure limiting valve, a throttling hole, a brake caliper body, a brake disc and a friction plate; the method is characterized in that: the friction plates are symmetrically arranged on two sides of the brake disc, one friction plate is arranged on the large piston, and the other friction plate is arranged on the brake caliper body; the motor is connected with a power input element of the transmission mechanism, and a power output element of the transmission mechanism is connected with the cam; the cam is a groove cam and is matched with the small piston/brake caliper body; the small piston is arranged on the brake caliper body, one end of the small piston is connected with the cam, and the other end of the small piston comprises a curved surface structure with a certain slope; the large piston is arranged in an installation hole on the brake caliper body through the large sealing ring, one end of the large piston is provided with the friction plate, and the other end of the large piston is provided with a curved surface structure corresponding to the curved surface structure of the small piston; a hydraulic cavity is arranged between the curved surface end of the large piston and the curved surface end of the small piston; the hydraulic cavity is connected with the liquid supplementing tank through the one-way valve; the hydraulic cavity is connected with the liquid supplementing tank through the pressure limiting valve, and the throttling hole is arranged between the pressure limiting valve and the hydraulic cavity.
2. The electro-mechanical hydraulic brake-by-wire of claim 1, wherein: the curved surface end of the large piston is in direct contact fit with the curved surface end of the small piston to form a contact curved surface.
3. the electro-mechanical hydraulic brake-by-wire of claim 2, wherein: a gap is reserved between the large piston and the mounting hole on the brake caliper body, the size of the gap is larger than the feedback of the deformation between the contact of the friction plate and the brake disc and the generation of the maximum braking efficiency on the contact curved surface of the large piston and the small piston in the braking work, and the feedback of the free gap between the friction plate and the brake disc on the contact curved surface of the large piston and the small piston is smaller than the feedback of the free gap between the friction plate and the brake disc on the contact curved surface of the.
4. The electro-mechanical hydraulic brake-by-wire of claim 2, wherein: the curved contact surface between the large piston and the small piston can be a slope, a circular arc surface, a hyperbolic surface, a parabolic surface and the like or a combination of the above curved surfaces.
5. The electro-mechanical hydraulic brake-by-wire of claim 1, wherein: when no transmission link with zero reverse efficiency exists in the transmission mechanism, parking braking under the condition of power failure of the motor is realized by adopting a locking mechanism, the locking mechanism adopts an electromagnetic brake or an electric control mechanical braking device and can be disconnected when being powered on, a transmission element in a transmission link is fixed when the power failure occurs, the pressure between the friction plate and the brake disc is kept, and the parking braking function is realized; when the transmission mechanism is provided with a transmission link with the reverse efficiency of zero, the parking brake can be realized by using the locking mechanism, and the parking brake under the condition of motor power failure can also be realized by using the transmission link with the reverse efficiency of zero and incapable reverse transmission of power and motion.
6. The electro-mechanical hydraulic brake-by-wire of claim 1, wherein: the cam is supported on the brake caliper body and is matched with the small piston; or the cam is supported on the small piston and is matched with the brake caliper body for installation.
7. The electro-mechanical hydraulic brake-by-wire of claim 2, wherein: the device also comprises a roller mechanism which is adopted at the position where the large piston is matched with the small piston in a curved surface manner so as to reduce the friction resistance.
8. The electro-mechanical hydraulic brake-by-wire of claim 1, wherein: and a sealing device is arranged between the small piston and the brake caliper body.
9. The electro-mechanical hydraulic brake-by-wire of claim 1, wherein: and a roller structure is adopted between the small piston and the cam and between the brake caliper body and the cam, so that the friction resistance is reduced, and the working efficiency of the system is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800311.9A CN110552979A (en) | 2019-08-20 | 2019-08-20 | Electronic mechanical hydraulic line control brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800311.9A CN110552979A (en) | 2019-08-20 | 2019-08-20 | Electronic mechanical hydraulic line control brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552979A true CN110552979A (en) | 2019-12-10 |
Family
ID=68736594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910800311.9A Withdrawn CN110552979A (en) | 2019-08-20 | 2019-08-20 | Electronic mechanical hydraulic line control brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552979A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911563A (en) * | 2020-06-08 | 2020-11-10 | 许飚 | Automobile brake device |
| CN114810879A (en) * | 2022-06-08 | 2022-07-29 | 浙江师范大学 | Composite line control ware |
| CN115095618A (en) * | 2022-06-27 | 2022-09-23 | 浙江师范大学 | Composite line control brake, brake system and control method |
| CN115182942A (en) * | 2022-07-15 | 2022-10-14 | 江苏理工学院 | Electric brake structure and electric sliding table device using same |
| CN116877598A (en) * | 2023-09-04 | 2023-10-13 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Wire control brake device, wire control brake and vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4229042A1 (en) * | 1991-09-02 | 1993-03-04 | Akebono Brake Ind | Electric-motor-assisted hydraulic brake for motor vehicle - has sensitivity to brake pedal operation enhanced by gearing-down and unequal dias. of colinear pistons |
| JPH08253115A (en) * | 1995-03-20 | 1996-10-01 | Akebono Brake Res & Dev Center Ltd | Caliper inside incorporated type brake fluid pressure control device |
| CN100469633C (en) * | 2004-03-29 | 2009-03-18 | 赵韩龙 | Brake actuating apparatus using an electric motor |
| CN201593576U (en) * | 2009-10-23 | 2010-09-29 | 南京航空航天大学 | Electronic mechanical type and hydraulic type dual-purpose brake |
| CN202500929U (en) * | 2011-11-14 | 2012-10-24 | 芜湖伯特利汽车安全系统有限公司 | hydraulic braking caliper used for light truck braking system |
| CN104870854A (en) * | 2013-10-15 | 2015-08-26 | 京西重工（上海）有限公司 | Brake caliper piston actuation device |
| CN107477110A (en) * | 2017-08-28 | 2017-12-15 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN107477109A (en) * | 2017-08-28 | 2017-12-15 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN107965536A (en) * | 2017-11-28 | 2018-04-27 | 宋建毅 | A kind of hydraulic pressure floating caliper type disc brake gear |
| CN109185366A (en) * | 2018-10-12 | 2019-01-11 | 合肥工业大学 | A kind of line control brake system of hydraulic regulating |
-
2019
- 2019-08-20 CN CN201910800311.9A patent/CN110552979A/en not_active Withdrawn
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4229042A1 (en) * | 1991-09-02 | 1993-03-04 | Akebono Brake Ind | Electric-motor-assisted hydraulic brake for motor vehicle - has sensitivity to brake pedal operation enhanced by gearing-down and unequal dias. of colinear pistons |
| JPH08253115A (en) * | 1995-03-20 | 1996-10-01 | Akebono Brake Res & Dev Center Ltd | Caliper inside incorporated type brake fluid pressure control device |
| CN100469633C (en) * | 2004-03-29 | 2009-03-18 | 赵韩龙 | Brake actuating apparatus using an electric motor |
| CN201593576U (en) * | 2009-10-23 | 2010-09-29 | 南京航空航天大学 | Electronic mechanical type and hydraulic type dual-purpose brake |
| CN202500929U (en) * | 2011-11-14 | 2012-10-24 | 芜湖伯特利汽车安全系统有限公司 | hydraulic braking caliper used for light truck braking system |
| CN104870854A (en) * | 2013-10-15 | 2015-08-26 | 京西重工（上海）有限公司 | Brake caliper piston actuation device |
| CN107477110A (en) * | 2017-08-28 | 2017-12-15 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN107477109A (en) * | 2017-08-28 | 2017-12-15 | 浙江师范大学 | A kind of electric mechanical brake-by-wire device |
| CN107965536A (en) * | 2017-11-28 | 2018-04-27 | 宋建毅 | A kind of hydraulic pressure floating caliper type disc brake gear |
| CN109185366A (en) * | 2018-10-12 | 2019-01-11 | 合肥工业大学 | A kind of line control brake system of hydraulic regulating |
Non-Patent Citations (1)
| Title |
|---|
| 欧阳光耀等: "《柴油机高压共轨喷射技术》", 30 November 2012, 国防工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911563A (en) * | 2020-06-08 | 2020-11-10 | 许飚 | Automobile brake device |
| CN114810879A (en) * | 2022-06-08 | 2022-07-29 | 浙江师范大学 | Composite line control ware |
| CN114810879B (en) * | 2022-06-08 | 2023-07-18 | 浙江师范大学 | Combined type wire control actuator |
| CN115095618A (en) * | 2022-06-27 | 2022-09-23 | 浙江师范大学 | Composite line control brake, brake system and control method |
| CN115095618B (en) * | 2022-06-27 | 2023-07-28 | 浙江师范大学 | Combined type brake-by-wire, brake system and control method |
| CN115182942A (en) * | 2022-07-15 | 2022-10-14 | 江苏理工学院 | Electric brake structure and electric sliding table device using same |
| CN115182942B (en) * | 2022-07-15 | 2023-10-03 | 江苏理工学院 | Electric brake structure and electric sliding table device using same |
| CN116877598A (en) * | 2023-09-04 | 2023-10-13 | 北京理工大学深圳汽车研究院(电动车辆国家工程实验室深圳研究院) | Wire control brake device, wire control brake and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110469600B (en) | Self-energizing wire control actuator | |
| CN110552979A (en) | Electronic mechanical hydraulic line control brake | |
| CN107477109B (en) | A kind of electric mechanical brake-by-wire device | |
| CN107448520B (en) | A kind of electric mechanical brake-by-wire device | |
| CN110486394B (en) | Self-energizing wire control actuator | |
| CN110594319A (en) | Electronic mechanical hydraulic line control brake | |
| CN110425236B (en) | Self-energizing wire control actuator | |
| CN108591306B (en) | Electronic mechanical brake-by-wire | |
| CN107420460B (en) | Electronic mechanical brake-by-wire | |
| CN110541898A (en) | Electronic mechanical hydraulic line control brake | |
| CN110425237B (en) | Wedge block assembly for brake | |
| CN110469602B (en) | Self-energizing wire control actuator | |
| CN114382802B (en) | Linear control actuator | |
| CN110513410A (en) | A kind of hydraulic brake-by-wire device of electric mechanical | |
| CN107588125A (en) | A kind of electric mechanical brake-by-wire device | |
| CN108253042B (en) | Electronic mechanical brake-by-wire | |
| CN110454522B (en) | Self-energizing wire control actuator | |
| CN114658772A (en) | Electronic mechanical line control brake with more stable transmission characteristic | |
| CN108194535B (en) | Electronic mechanical brake-by-wire | |
| CN114396439B (en) | Linear control actuator | |
| CN110578760A (en) | Electronic mechanical hydraulic line control brake | |
| CN107588126B (en) | Electronic mechanical wire control actuator | |
| CN115095618B (en) | Combined type brake-by-wire, brake system and control method | |
| CN110566603B (en) | Wire control actuator | |
| CN110486392B (en) | Self-energizing wire control actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191210 |