CN107420460B - Electronic mechanical brake-by-wire - Google Patents
Electronic mechanical brake-by-wire Download PDFInfo
- Publication number
- CN107420460B CN107420460B CN201710859045.8A CN201710859045A CN107420460B CN 107420460 B CN107420460 B CN 107420460B CN 201710859045 A CN201710859045 A CN 201710859045A CN 107420460 B CN107420460 B CN 107420460B
- Authority
- CN
- China
- Prior art keywords
- brake
- piston
- friction
- caliper body
- screw rod
- 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.)
- Active
Links
Images
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
-
- 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
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
-
- 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
- F16D65/38—Slack adjusters
-
- 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
- F16D65/38—Slack adjusters
- F16D2065/386—Slack adjusters driven electrically
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to an electronic mechanical brake-by-wire, which comprises a motor, a transmission mechanism, a one-way clutch, a screw, a piston, a friction limiting device and the like. The motor drives the one-way clutch to rotate through the transmission mechanism, the one-way clutch is combined with the driving screw to rotate, the piston and the brake caliper body are respectively driven to move in opposite directions through the thread transmission mechanism, the friction plates are pressed tightly by the same force from two sides of the brake disc, and the efficient braking effect is achieved. 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 mode, and simultaneously realize adjustable brake clearance and adjustable brake strength, in particular to an electronic mechanical 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 mainly an electrohydraulic brake system (EHB) and an electromechanical brake system (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 electronic hydraulic brake system does not have all the advantages of a complete brake-by-wire system because a hydraulic component is reserved, 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 braking 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, most brakes have the problems of complex structure, large installation size and the like.
Disclosure of Invention
The invention aims to provide an electromechanical 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, and can convert the displacement or the rotation angle of the friction plate driving mechanism to obtain the magnitude of the brake clamping force by detecting the displacement or the rotation angle of the friction plate driving mechanism, thereby correspondingly simplifying a control system.
The technical scheme for realizing the purpose of the invention is as follows:
an electronic mechanical line control brake comprises a motor, a transmission mechanism, a one-way clutch, a screw rod, a piston, a friction limiting device, a brake caliper body, a brake disc and a friction plate; the friction plates are symmetrically arranged on two sides of the brake disc, one friction plate is arranged on the piston, and the other friction plate is arranged on the brake caliper body; the piston is arranged on the brake caliper body through the friction limiting device; one part of the friction limiting device is fixedly arranged on the brake caliper body, and the other part of the friction limiting device has larger friction force with the outer surface of the piston; the motor is connected with an input element of the transmission mechanism; the terminal element of the transmission mechanism is connected with the one-way clutch, the one-way clutch is connected with the screw rod, the screw rod is arranged on the piston and can rotate around the axis direction of the screw rod, and the movement along the axis direction of the screw rod is limited by the piston; a threaded hole is formed in the position, corresponding to the screw, of the brake caliper body; the screw rod is matched with the threaded hole; when the one-way clutch is combined, the screw rod is driven to rotate, the brake caliper body and the piston are driven to move in opposite directions through the thread transmission mechanism, and the friction plates are driven to press the brake disc from two sides;
when braking, the motor drives the one-way clutch to move through the transmission mechanism, at the moment, the one-way clutch is combined to drive the screw rod to rotate, the piston and the brake caliper body are driven to move in opposite directions respectively, and the friction plates are pressed on two sides of the brake disc to obtain a high-efficiency and reliable braking effect; when the brake is released, the motor drives the one-way clutch to move reversely through the transmission mechanism, the one-way clutch is separated, the piston and the brake caliper body move relatively under the action of elastic potential energy in the friction limiting device, the initial position is restored, and the screw rotates to adapt to the relative movement of the piston and the brake caliper body;
when the friction plate is worn and the thickness of the friction plate is reduced, and the brake works, the motor drives the one-way clutch to be combined through the transmission mechanism to drive the screw rod to rotate, so that the piston and the brake caliper body move relatively, the elastic potential energy in the friction limiting device reaches the maximum, the brake effect is poor due to the reduction of the friction plate, the motor continues to work at the moment, the screw rod is driven to continue to rotate, the friction force between the outer surface of the piston and the friction limiting device is overcome, the piston and the brake caliper body continue to move relatively, and the brake disc is pressed tightly, so that the reliable and efficient brake effect is obtained; when the brake is released, the piston and the brake caliper body move relatively under the action of elastic potential energy in the friction limiting device, and the piston and the friction limiting device are relatively fixed at a new contact position at the moment, so that the automatic adjustment of the brake clearance is realized.
And a circulating ball structure is adopted between the screw rod and the threaded hole on the brake caliper body so as to reduce the friction resistance and improve the working efficiency of the system.
And a transmission system is added between the one-way clutch and the screw.
The piston is connected with the screw rod through a roller mechanism to reduce friction resistance.
When no transmission link with zero reverse efficiency exists in the transmission mechanism or the transmission system, a locking mechanism is adopted to realize parking braking under the condition of power failure of the motor, the locking mechanism adopts an electromagnetic brake or an electric control mechanical braking device, can fix a transmission element in the transmission link when the transmission mechanism is switched on or switched off, and keeps the pressure between the friction plate and the brake disc, thereby realizing the parking braking function; when the transmission mechanism or the transmission system 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 can also be realized under the condition that the motor is powered off by using the condition that the reverse efficiency is zero and the power and the motion can not be reversely transmitted.
Drawings
Fig. 1 is a front view of a first embodiment of an electromechanical brake-by-wire of the present invention.
Fig. 2 is a view of the first embodiment of the electromechanical brake-by-wire of the present invention viewed from direction a.
Fig. 3 is a front view of a second embodiment of the electromechanical brake-by-wire of the present invention.
The description is marked in the drawings: 1-brake caliper support 2-guide pin 3-brake caliper body 4-plane thrust bearing 5-screw 6-worm wheel 7-one-way clutch 8-worm 9-sealing ring 10-motor 11-piston 12-friction plate 13-brake disc 14-motor shaft 15-electromagnetic brake 16-primary driving gear 17-spring 18-snap ring 19-primary driven gear 20-secondary driving gear 21-secondary driven gear 22-electromagnetic coil 23-locking pin 24-return spring
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1 and 2.
As shown in fig. 1, an electromechanical brake-by-wire brake comprises a caliper body (3) which can be moved on a guide pin (2), the guide pin (2) being fixed to a brake caliper carrier (1). A brake disc (13) is arranged in a jaw of a brake caliper body (3), friction plates (12) are arranged on two sides of the brake disc (13), one friction plate is arranged on the brake caliper body (3) and the other friction plate is arranged on a piston (11), the piston (11) is arranged on the brake caliper body (3) through a sealing ring (9), large friction force exists between contact surfaces of the sealing ring (9) and the piston (11), and when the piston (11) moves within the elastic deformation range of the sealing ring (9), relative movement does not exist between the contact surfaces of the sealing ring (9) and the piston (11). The other side of the piston (11) is provided with a hole, a screw rod (5) is arranged in the hole, a plane thrust bearing (4) is arranged between the screw rod (5) and the hole of the piston (11), and a radial bearing can be additionally used to further reduce the friction loss. The other end of the screw rod (5) is matched with a threaded hole on the brake caliper body (3), the outer surface of the screw rod (5) is connected with the worm wheel (6) through the one-way clutch (7), and the worm (8) which is matched with the worm wheel (6) to work is driven by the motor (10).
When the brake works, the motor (10) drives the worm (8) and the worm wheel (6) to rotate, the one-way clutch (7) is combined to drive the screw rod (5) to rotate, the screw rod (5) is installed in a hole of the piston (11) and a bearing is arranged between the screw rod and the piston (11), so that the piston (11) cannot be caused to rotate by the rotation of the screw rod (5), the screw rod (5) is matched with a threaded hole in the brake caliper body (3), and the brake caliper body (3) cannot rotate, so that the piston (11) moves leftwards by the rotation of the screw rod (5), meanwhile, the brake caliper body (3) moves rightwards, namely the piston (11) and the brake caliper body (3) move towards opposite directions, and the corresponding friction plates (12) are driven to press the brake disc (13) from two sides with the same force, and the efficient and reliable brake effect is realized. At this time, the seal ring (9) is elastically deformed to store elastic potential energy, and there is no relative movement between the contact surfaces of the seal ring (9) and the piston (11). When the brake is released, the motor (10) drives the worm gear mechanism to rotate reversely, at the moment, the one-way clutch (7) is separated, the screw rod (5) is in a free state, the elastic potential energy stored in the sealing ring (9) is released, the piston (11) and the brake caliper body (3) move relatively, the screw rod (5) is driven to rotate reversely under the action of the elastic potential energy in the sealing ring (9), and all elements recover to the initial position.
When the friction plate (12) is abraded and thinned, and the brake caliper body is braked, the motor (10) drives the one-way clutch (7) to be combined through the worm gear mechanism, the drive screw (5) rotates to push the piston (11) and the brake caliper body (3) to move relatively, and when the elastic deformation of the sealing ring (9) reaches the maximum, the brake effect is poor due to abrasion of the friction plate (12), at the moment, the motor (10) continues to drive the screw (5) to rotate through the combined one-way clutch (7), namely, the piston (11) and the brake caliper body (3) continue to move relatively, so that the sealing ring (9) keeps the maximum elastic deformation, the piston (11) overcomes the friction force between the piston and the sealing ring (9), a new contact surface is matched with the sealing ring (9), and namely, the displacement of the piston (11) relative to the brake caliper body (3) is larger than the maximum elastic deformation of the sealing ring (9). When the brake is released, the motor (10) drives the worm gear mechanism to rotate reversely, the one-way clutch (7) is separated, the elastic potential energy of the sealing ring (9) is released, the piston (11) and the brake caliper body (3) move relatively, the screw rod (5) is driven to rotate reversely, the sealing ring (9) and the piston (11) are positioned in a matched mode through a new contact surface, the return displacement amount is still the maximum elastic deformation amount of the sealing ring (9), therefore, the brake gap is kept the same as that before abrasion, and the automatic adjustment of the brake gap is achieved.
When the transmission reverse efficiency of the worm (8) and the worm wheel (6) is zero, the motor (10) can drive the friction plate (12) to press the brake disc (13), and after the parking brake requirement is met, the parking brake under the condition that the motor (10) is powered off is realized by using the self-locking function of the worm and worm wheel mechanism.
Another embodiment of the present invention will be described with reference to fig. 3.
The embodiment of fig. 3 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 worm wheel (6) is a terminal element of the transmission mechanism, and a one-way clutch (7) is arranged between the worm wheel (6) and a screw rod (5); in fig. 3, two-stage gear transmission is adopted, a secondary driven gear (21) is a terminal element of the transmission mechanism, and a one-way clutch (7) is arranged between the secondary driven gear (21) and a screw rod (5).
Different friction limiting devices are adopted, a sealing ring (9) is adopted in the attached drawing 1 to realize the friction limiting function, and elastic potential energy is stored by utilizing the elastic deformation of the sealing ring (9); in the attached drawing 3, a spring (17) and a snap ring (18) are adopted to realize the friction limiting function, and the spring (17) is utilized to generate elastic deformation to store elastic potential energy.
The parking braking function is realized in different modes, in the attached figure 1, the parking braking under the condition that the motor (10) is powered off can be directly realized by utilizing the reverse efficiency of the worm gear mechanism as zero; in the attached figure 3, the parking braking mode is shown when the electromagnetic brake (15) is electrified to release the motor shaft (14) and the motor shaft (14) is locked when the motor (10) is powered off, and the parking braking mode is also shown when the electric control mechanical braking device is adopted, when the electromagnetic coil (22) is powered on, the locking pin (23) is acted by electromagnetic force to compress the return spring (24), so that the locking pin (23) is not contacted with the secondary driven gear (21), and the braking or the releasing of the brake is not influenced; when parking braking is needed, the motor (10) drives the friction plate (12) to press the brake disc (13) to meet the parking braking requirement, then the electromagnetic coil (22) is powered off, the locking pin (23) is inserted into the teeth of the secondary driven gear (21) under the action of the elastic force of the return spring (24), the parking braking effect is kept, and the parking braking function under the condition that the motor (10) is powered off can be achieved.
As shown in figure 3, a brake disc (13) is arranged in a jaw of a brake caliper body (3), friction plates (12) are arranged on two sides of the brake disc (13), one is arranged on the brake caliper body (3) and the other is arranged on a piston (11), the piston (11) is arranged on the brake caliper body (3) through a clamping ring (18), the clamping ring (18) is pushed to one side far away from the brake disc (13) by a spring (17), and the spring (17) is arranged on the brake caliper body (3). The contact surface between the snap ring (18) and the piston (11) has larger friction force, and when the displacement of the piston (11) is within the elastic deformation range of the spring (17), the contact surface between the snap ring (18) and the piston (11) has no relative movement. The other side of the piston (11) is provided with a hole, a screw rod (5) is arranged in the hole, a plane thrust bearing (4) is arranged between the screw rod (5) and the hole of the piston (11), and a radial bearing can be additionally used to further reduce the friction loss. The other end of the screw rod (5) is matched with a threaded hole in the brake caliper body (3), the outer surface of the screw rod (5) is connected with a secondary driven gear (21) through a one-way clutch (7), the secondary driven gear (21), a secondary driving gear (20), a primary driven gear (19) and a primary driving gear (16) form a two-stage gear speed reducing mechanism, and the primary driving gear (16) is fixedly installed on a motor shaft (14).
When the brake works, the motor (10) drives the one-way clutch (7) to be combined through the two-stage gear reduction mechanism to drive the screw rod (5) to rotate, the piston (11) and the brake caliper body (3) are pushed to move in opposite directions, and the corresponding friction plates (12) are driven to press the brake disc (13) from two sides with the same force, so that the efficient and reliable brake effect is realized. At this time, the snap ring (18) moves together with the piston (11), the spring (17) is compressed, the spring (17) is elastically deformed, elastic potential energy is stored, and there is no relative movement between the contact surfaces of the snap ring (18) and the piston (11). When the brake is released, the motor (10) drives the two-stage gear reduction mechanism to rotate reversely, at the moment, the one-way clutch (7) is separated, the screw (5) is in a free state, the elastic potential energy stored in the spring (17) is released, the piston (11) and the brake caliper body (3) move relatively, the screw (5) is driven to rotate reversely under the action of the elastic potential energy in the spring (17), and all elements recover to the initial position.
When the friction plate (12) is abraded and the thickness is reduced, and braking works, the motor (10) drives the one-way clutch (7) to be combined through the two-stage gear reduction mechanism, the screw rod (5) is driven to rotate, the piston (11) and the brake caliper body (3) are pushed to move relatively, the elastic deformation of the spring (17) is maximum, when the snap ring (18) is close to the left step surface, the friction plate (12) is abraded, the braking effect is poor, at the moment, the motor (10) drives the screw rod (5) to rotate continuously through the combined one-way clutch (7), namely, the piston (11) and the brake caliper body (3) continue to move relatively, therefore, the spring (17) keeps the maximum elastic deformation, the piston (11) overcomes the friction force between the piston and the snap ring (18), and a new contact surface is matched with the snap ring (18). When the brake is released, the motor (10) drives the two-stage gear reduction mechanism to rotate reversely, the one-way clutch (7) is separated, the elastic potential energy of the spring (17) is released, the piston (11) and the brake caliper body (3) move relatively, the screw rod (5) is driven to rotate, the snap ring (18) and the piston (11) are positioned in a matched mode through a new contact surface, the return displacement amount is still the maximum elastic deformation amount of the spring (17), therefore, the brake clearance is kept the same as that before abrasion, and automatic adjustment of the brake clearance is achieved.
When parking braking is needed, the motor (10) drives the friction plate (12) to press the brake disc (13) to meet the parking braking requirement, then the electromagnetic brake (15) is powered off, the motor shaft (14) is locked, the braking efficiency is kept unchanged, and the parking braking function under the condition that the motor (10) is powered off can be realized at the moment. When the electromagnetic brake (15) is electrified, the motor shaft (14) is released, and the braking torque can be freely controlled by the motor (10). Or an electric control mechanical braking device is adopted, when the power is on, the electromagnetic coil (22) enables the locking pin (23) to return, when the power is off, the locking pin (23) is inserted into the teeth of the secondary driven gear (21), and the parking braking function under the condition that the power is off of the motor (10) is realized.
In this embodiment, the electromechanical brake device may also act directly on the primary driven gear (19), or on the secondary driving gear (20), or on a specially provided detent wheel, to achieve a similar parking brake effect.
In the embodiment of fig. 3, the one-way clutch (7) can also be provided in the primary driven gear (19), or in the primary driving gear (16), or in the secondary driving gear (20); in the embodiment of fig. 1 and 2, the one-way clutch (7) can also be arranged in the worm (8), as claimed in claim 3.
The transmission mechanism can adopt other transmission modes such as chain transmission, belt transmission, lever transmission, inhaul cable transmission, planetary gear transmission and the like besides a dead axle gear mechanism and a worm and gear mechanism, the friction limiting device can also adopt other structures to realize similar functions besides a sealing ring and a spring/snap ring, and the locking mechanism can also realize locking functions in a mode of acting a locking pin on other gears or a special locking ratchet wheel integrated with the gears or installing a ratchet and pawl mechanism on a motor shaft and the like. 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 (3)
1. An electronic mechanical line control brake comprises a motor, a transmission mechanism, a one-way clutch, a screw rod, a piston, a friction limiting device, a brake caliper body, a brake disc and a friction plate; the friction plates are symmetrically arranged on two sides of the brake disc, one friction plate is arranged on the piston, and the other friction plate is arranged on the brake caliper body; the piston is arranged on the brake caliper body through the friction limiting device; one part of the friction limiting device is fixedly arranged on the brake caliper body, and the other part of the friction limiting device has larger friction force with the outer surface of the piston; the motor is connected with an input element of the transmission mechanism; the terminal element of the transmission mechanism is connected with the one-way clutch, the one-way clutch is connected with the screw rod, the screw rod is arranged on the piston and can rotate around the axis direction of the screw rod, and the movement along the axis direction of the screw rod is limited by the piston; a threaded hole is formed in the position, corresponding to the screw, of the brake caliper body; the screw rod is matched with the threaded hole; when the one-way clutch is combined, the screw rod is driven to rotate, the brake caliper body and the piston are driven to move in opposite directions through the thread transmission mechanism, and the friction plates are driven to press the brake disc from two sides; the brake caliper further comprises a circulating ball structure which is arranged between the screw rod and the threaded hole on the brake caliper body, so that the friction resistance is reduced, and the working efficiency of the system is improved; the transmission system is additionally arranged between the one-way clutch and the screw rod;
when the brake is carried out, the motor drives the one-way clutch to move through the transmission mechanism, at the moment, the one-way clutch is combined to drive the screw rod to rotate, the piston and the brake caliper body are driven to move towards opposite directions respectively, and the friction plates are pressed on two sides of the brake disc to obtain a high-efficiency and reliable brake effect; when the brake is released, the motor drives the one-way clutch to move reversely through the transmission mechanism, the one-way clutch is separated at the moment, the piston and the brake caliper body move relatively under the action of elastic potential energy in the friction limiting device, the initial position is recovered, and the screw rotates to adapt to the relative movement of the piston and the brake caliper body at the moment;
when the friction plate is worn and the thickness of the friction plate is reduced, and the brake works, the motor drives the one-way clutch to be combined through the transmission mechanism to drive the screw rod to rotate, so that the piston and the brake caliper body move relatively, the elastic potential energy in the friction limiting device reaches the maximum, the brake effect is poor due to the reduction of the friction plate, the motor continues to work at the moment, the screw rod is driven to continue to rotate, the friction force between the outer surface of the piston and the friction limiting device is overcome, the piston and the brake caliper body continue to move relatively, and the brake disc is pressed tightly, so that the reliable and efficient brake effect is obtained; when the brake is released, the piston and the brake caliper body move relatively under the action of elastic potential energy in the friction limiting device, and the piston and the friction limiting device are relatively fixed at a new contact position at the moment, so that the automatic adjustment of the brake clearance is realized.
2. The electromechanical brake-by-wire of claim 1, further comprising a roller mechanism at a location where said piston is coupled to said threaded rod to reduce frictional resistance.
3. The electromechanical brake-by-wire of claim 1, wherein when there is no transmission link with zero reverse efficiency in the transmission mechanism or the transmission system, a locking mechanism is used to implement parking brake when the motor is powered off, and the locking mechanism uses an electromagnetic brake or an electromechanical brake device, which can be switched off when powered on and off to fix a transmission element in the transmission link, and maintain the pressure between the friction plate and the brake disc, thereby implementing parking brake function; when the transmission mechanism or the transmission system is provided with a transmission link with the reverse efficiency of zero, the parking brake can be realized by utilizing the locking mechanism, and the parking brake under the condition of power failure of the motor can also be realized by utilizing the condition that the reverse efficiency of zero and the power and the motion cannot be reversely transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859045.8A CN107420460B (en) | 2017-09-13 | 2017-09-13 | Electronic mechanical brake-by-wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859045.8A CN107420460B (en) | 2017-09-13 | 2017-09-13 | Electronic mechanical brake-by-wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107420460A CN107420460A (en) | 2017-12-01 |
| CN107420460B true CN107420460B (en) | 2023-04-07 |
Family
ID=60433333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710859045.8A Active CN107420460B (en) | 2017-09-13 | 2017-09-13 | Electronic mechanical brake-by-wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107420460B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630570A (en) * | 2019-01-28 | 2019-04-16 | 任丘市本溪石油设备有限公司 | A kind of dead brake hook automatic ejection resetting apparatus |
| CN110425236B (en) * | 2019-07-27 | 2021-01-15 | 浙江师范大学 | Self-energizing wire control actuator |
| CN111246699B (en) * | 2020-03-17 | 2021-04-06 | 李名龙 | Assembled regulator cubicle of easily assembling |
| CN112619114A (en) * | 2021-01-29 | 2021-04-09 | 哈尔滨体育学院 | Safety protective tool for free combat |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| CN202149166U (en) * | 2011-07-06 | 2012-02-22 | 隆中控股集团有限公司 | Automatic clearance adjusting mechanism of automobile pressure disc brake |
| DE102011085367A1 (en) * | 2010-11-05 | 2012-05-10 | Continental Teves Ag & Co. Ohg | Gear motor drive - especially for a combined motor vehicle brake |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN202790221U (en) * | 2012-09-15 | 2013-03-13 | 浙江大学台州研究院 | Car drive-by-wire brake |
| CN104019163A (en) * | 2014-06-28 | 2014-09-03 | 枣庄泰德机械有限公司 | Chassis type automatic brake gap adjusting mechanism of commercial vehicle |
| CN104196922A (en) * | 2014-08-20 | 2014-12-10 | 吉林大学 | Worm gear, worm, ball and wedge-disc type electronic parking brake |
| CN105736606A (en) * | 2016-04-07 | 2016-07-06 | 金华职业技术学院 | Automobile electromechanical brake with gap adjusting function |
-
2017
- 2017-09-13 CN CN201710859045.8A patent/CN107420460B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660580A (en) * | 2008-08-29 | 2010-03-03 | 日立汽车系统株式会社 | Electric disk brake |
| DE102011085367A1 (en) * | 2010-11-05 | 2012-05-10 | Continental Teves Ag & Co. Ohg | Gear motor drive - especially for a combined motor vehicle brake |
| CN202149166U (en) * | 2011-07-06 | 2012-02-22 | 隆中控股集团有限公司 | Automatic clearance adjusting mechanism of automobile pressure disc brake |
| CN102853000A (en) * | 2012-09-15 | 2013-01-02 | 浙江大学台州研究院 | Automobile brake controlled by wire |
| CN202790221U (en) * | 2012-09-15 | 2013-03-13 | 浙江大学台州研究院 | Car drive-by-wire brake |
| CN104019163A (en) * | 2014-06-28 | 2014-09-03 | 枣庄泰德机械有限公司 | Chassis type automatic brake gap adjusting mechanism of commercial vehicle |
| CN104196922A (en) * | 2014-08-20 | 2014-12-10 | 吉林大学 | Worm gear, worm, ball and wedge-disc type electronic parking brake |
| CN105736606A (en) * | 2016-04-07 | 2016-07-06 | 金华职业技术学院 | Automobile electromechanical brake with gap adjusting function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107420460A (en) | 2017-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110469600B (en) | Self-energizing wire control actuator | |
| CN107477109B (en) | A kind of electric mechanical brake-by-wire device | |
| CN107448520B (en) | A kind of electric mechanical brake-by-wire device | |
| CN107420460B (en) | Electronic mechanical brake-by-wire | |
| CN110425236B (en) | Self-energizing wire control actuator | |
| CN108591306B (en) | Electronic mechanical brake-by-wire | |
| US7806239B2 (en) | Electromechanical actuating device for a wheel brake system of a motor vehicle and a brake system equipped with such an actuating device | |
| CN110486394B (en) | Self-energizing wire control actuator | |
| CN110552979A (en) | Electronic mechanical hydraulic line control brake | |
| CN110594319A (en) | Electronic mechanical hydraulic line control brake | |
| CN107461428B (en) | A kind of automobile brake-by-wire device and control method | |
| CN108263356B (en) | Brake, brake system and vehicle | |
| CN110469602B (en) | Self-energizing wire control actuator | |
| CN110425237B (en) | Wedge block assembly for brake | |
| CN107588125B (en) | A kind of electric mechanical brake-by-wire device | |
| CN107435699B (en) | A kind of floating caliper type disc brake-by-wire device and control method | |
| CN114382802B (en) | Linear control actuator | |
| CN110541898A (en) | Electronic mechanical hydraulic line control brake | |
| 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 | |
| CN107588126B (en) | Electronic mechanical wire control actuator | |
| CN108194535B (en) | Electronic mechanical brake-by-wire | |
| CN110486392B (en) | Self-energizing wire control actuator | |
| CN110566603B (en) | Wire control actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |