CN113653750A - Disc brake and car - Google Patents
Disc brake and car Download PDFInfo
- Publication number
- CN113653750A CN113653750A CN202110893003.2A CN202110893003A CN113653750A CN 113653750 A CN113653750 A CN 113653750A CN 202110893003 A CN202110893003 A CN 202110893003A CN 113653750 A CN113653750 A CN 113653750A
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- Prior art keywords
- brake
- piston
- push rod
- cylinder
- disc brake
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- 238000007789 sealing Methods 0.000 description 16
- 239000007788 liquid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Classifications
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- 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
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The application relates to a disc brake and a vehicle, comprising a brake assembly, a first driving assembly and a second driving assembly, wherein the brake assembly comprises a first brake block and a second brake block, the first brake block and the second brake block are arranged at an interval, the driving assembly comprises a driving piece connected with the first brake block, the driving piece is configured to drive the first brake block to move towards a direction close to or away from the second brake block so as to brake or release the brake, the second driving assembly is arranged at one side of the brake assembly and comprises a first cylinder, a first piston and a push rod, the first piston is arranged in the first cylinder, the first piston is configured to provide power for moving the push rod so as to drive the driving piece to brake or release the brake, and the second driving assembly is arranged at one side of the brake assembly and comprises a first cylinder, a first piston and a second piston, the first piston is configured to provide power for moving the push rod so as to drive the driving piece to release the brake, so that the disc brake of the present application has service brake and parking brake functions, the problem that the design of the conventional disc brake is unreasonable due to the functions of service braking and parking braking is solved.
Description
Technical Field
The application relates to the field of automobile brake systems, in particular to a disc brake and an automobile.
Background
The brake is an important part influencing the safety of the automobile, the hydraulic disc brake is widely applied to the fields of passenger vehicles and light commercial vehicles due to the advantages of good stability and the like, but for most of the passenger vehicles and light commercial vehicles, the rear axle brake is required to have a service braking function and a parking braking function at the same time at present, the hydraulic disc brake is commonly used in a floating caliper disc brake, and in order to enable the hydraulic disc brake to have the parking function at the same time, two common solutions are provided at present, one is that a set of mechanical parking mechanism is integrated on the disc brake, a rocker arm in the parking mechanism is pulled through a pull wire, and the pulling force on the rocker arm is converted into piston thrust through a worm gear, so that the parking is realized, but the parking structure has lower force transmission efficiency and cannot meet the use requirement of the parking of the vehicle with heavier total weight, and the other is that a set of self-drum brake (hub in a disc) is additionally arranged in the booster disc brake to realize the parking function, however, the arrangement is difficult due to the limitation of space, and the weight and the cost are greatly increased because a set of parking mechanism is additionally arranged at both ends of the rear axle.
Disclosure of Invention
Accordingly, it is necessary to provide a disc brake and an automobile in order to solve the problem of an unreasonable design of a conventional disc brake that has both a service brake function and a parking brake function.
The embodiment of the application provides a disk brake, includes: the brake assembly comprises a first brake block and a second brake block, and the first brake block and the second brake block are oppositely arranged at intervals; a first driving assembly including a driving member connected to the first brake pad, the driving member being configured to move the first brake pad toward or away from the second brake pad for braking or braking release; and the second driving assembly is arranged on one side, away from the braking assembly, of the first driving assembly and comprises a first cylinder body, a first piston and a push rod, the first piston is arranged in the first cylinder body, one end of the push rod is connected with the first piston, the other end of the push rod penetrates through the first driving assembly, the first piston is configured to provide power for enabling the push rod to move so as to drive the driving piece to brake, and power for enabling the push rod to move so as to drive the driving piece to brake is provided.
In one embodiment, the second driving assembly further includes an elastic element, the first piston separates a first accommodating cavity and a second accommodating cavity in the first cylinder, the push rod is at least partially disposed in the second accommodating cavity, the elastic element is disposed in the first accommodating cavity and connected to the first piston, and the elastic element is configured to provide power for moving the push rod to drive the driving member to brake.
In one embodiment, the first cylinder body is provided with a first duct communicated with the second accommodating cavity.
In one embodiment, the first cylinder comprises a housing and a base, an opening is formed in one side of the housing close to the first driving assembly, the base blocks the opening, and the push rod penetrates through the base.
In one embodiment, the second driving assembly further comprises a guide post at least partially disposed in the first receiving cavity, one end of the guide post being connected to the housing and the other end being connected to the first piston, such that the first piston can slide along the guide post.
In one embodiment, the resilient element comprises a spring, which is sleeved on the guide post.
In one embodiment, the first drive assembly further comprises a second cylinder, and the drive member comprises a second piston disposed within the second cylinder, the second piston being disposed between the push rod and the first brake pad.
In one embodiment, the second cylinder body is provided with a second duct communicated with the cavity of the second cylinder body.
In one embodiment, the second driving assembly further comprises a sealing ring and a bushing, the first piston is provided with a first groove and a second groove at one end, the sealing ring is arranged in the first groove, and the bushing is arranged in the second groove.
The embodiment of the present application further provides an automobile, including: such as the disc brake described above.
The application discloses a disc brake and an automobile, which comprises a brake assembly, a first driving assembly and a second driving assembly, wherein the brake assembly comprises a first brake block and a second brake block, the first brake block and the second brake block are arranged at an interval and used for pressing the brake disc to brake or releasing the brake disc to release the brake, the first driving assembly comprises a driving piece connected with the first brake block, the driving piece is configured to drive the first brake block to move towards a direction close to or away from the second brake block to brake or release the brake, the second driving assembly is arranged on one side of the first driving assembly away from the brake assembly and comprises a first cylinder body, a first piston and a push rod, the first piston is arranged in the first cylinder body, one end of the push rod is connected with the first piston, the other end of the push rod is arranged in the first driving assembly in a penetrating way, the first piston is configured to provide power for enabling the push rod to move so as to drive the driving piece to brake, and provide the power that makes the push rod motion in order to drive the driving piece and relieve the braking to make the disc brake of this application possess service braking function and parking braking function simultaneously, and then solve current disc brake for possessing service braking function and parking braking function simultaneously and the unreasonable problem of design that arouses.
Drawings
Fig. 1 is a schematic structural diagram of a disc brake provided in an embodiment of the present application;
fig. 2 is a sectional view of a disc brake according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The brake is an important part influencing the safety of the automobile, the hydraulic disc brake is widely applied to the fields of passenger vehicles and light commercial vehicles due to the advantages of good stability and the like, but for most of the passenger vehicles and light commercial vehicles, the rear axle brake is required to have a service braking function and a parking braking function at the same time at present, the hydraulic disc brake is commonly used in a floating caliper disc brake, and in order to enable the hydraulic disc brake to have the parking function at the same time, two common solutions are provided at present, one is that a set of mechanical parking mechanism is integrated on the disc brake, a rocker arm in the parking mechanism is pulled through a pull wire, and the pulling force on the rocker arm is converted into piston thrust through a worm gear, so that the parking is realized, but the parking structure has lower force transmission efficiency and cannot meet the use requirement of the parking of the vehicle with heavier total weight, and the other is that a set of self-drum brake (hub in a disc) is additionally arranged in the booster disc brake to realize the parking function, however, the arrangement is difficult due to the limitation of space, and the weight and the cost are greatly increased because a set of parking mechanism is additionally arranged at both ends of the rear axle.
Fig. 1 is a schematic structural diagram of a disc brake provided in an embodiment of the present application; fig. 2 is a sectional view of a disc brake according to an embodiment of the present application.
As shown in fig. 1 and 2, the present embodiment provides a disc brake, including a brake assembly 100, a first driving assembly 200 and a second driving assembly 300, wherein the brake assembly 100 includes a first brake shoe 110 and a second brake shoe 120, the first brake shoe 110 and the second brake shoe 120 are spaced apart from each other and are used for pressing a brake disc (not shown) to brake or releasing the brake disc to brake, the first driving assembly 200 includes a driving member 210 connected to the first brake shoe 110, the driving member 210 is configured to move the first brake shoe 110 toward or away from the second brake shoe 120 to brake or release the brake, the second driving assembly 300 is disposed on a side of the first driving assembly 200 away from the brake assembly 100 and includes a first cylinder 310, a first piston 320 and a push rod 330, the first piston 320 is disposed in the first cylinder 310, one end of the push rod 330 is connected to the first piston 320, the other end of the push rod 330 is disposed through the first driving assembly 200, and the first piston 320 is configured to provide power for moving the push rod 330 to drive the driving member 210 to perform braking, and provide power for moving the push rod 330 to drive the driving member 210 to release braking. The first piston 320 and the push rod 330 drive the driving unit 210 to move, so that the driving unit 210 can drive the first brake pad 110 to move towards or away from the second brake pad 120 to perform parking braking or release parking braking, and the driving unit 210 drives the first brake pad 110 to move towards or away from the second brake pad 120 to perform service braking or release service braking, so that the disc brake of the present application has both service braking function and parking braking function, and further solves the problem of unreasonable design of the existing disc brake due to both service braking function and parking braking function.
As shown in fig. 2, the second driving assembly 300 further includes an elastic element 340, the first piston 320 separates a first accommodating cavity 311 and a second accommodating cavity 312 in the first cylinder 310, the push rod 330 is at least partially disposed in the second accommodating cavity 312 to allow the push rod 330 to drive the driving member 210 to perform braking power and braking releasing power, the elastic element 340 is disposed in the first accommodating cavity 311 and connected to the first piston 320, the elastic element 340 is configured to provide power for moving the push rod 330 to drive the driving member 210 to perform braking power, because the elastic element 340 is connected to the first piston 320, the first piston 320 can provide power for moving the push rod 330 to drive the driving member 210 to perform braking power and braking releasing power, in another embodiment, the elastic element 340 can also be disposed in the second accommodating cavity 312 and connected to the first piston 320, so that the first piston 320 can provide power for moving the push rod 330 to drive the driving member 210 to perform braking power and braking releasing power, the specific design can be flexibly changed according to the actual situation, and is not limited herein. The elastic element 340 enables the disc brake in the embodiment of the present application to realize a parking brake function, one end of the push rod 330 is connected to the first piston 320, the first piston 320 drives the push rod 330 to move towards the direction close to the second brake pad 120 under the acting force of the elastic element 340, and further the push rod 330 drives the first brake pad 110 arranged on the driving element 210 to move towards the direction close to the second brake pad 120, so as to generate a parking brake, and thus a parking brake is realized.
In order to achieve the parking brake releasing function of the disc brake of the present embodiment, the first cylinder 310 is provided with a first hole communicating with the second receiving cavity 312, when the first piston 320 makes the push rod 330 drive the first brake pad 110 provided on the driving member 210 to move towards the direction approaching to the second brake pad 120 under the action of the elastic member 340, thereby generating the parking brake, and after the parking brake is released, compressed air is filled into the second receiving cavity 312 of the first cylinder 310 through the first hole, when the force of the compressed air acting on the first piston 320 in the second receiving cavity 312 is greater than the force of the elastic member 340 acting on the first piston 320, and since the direction of the force of the compressed air acting on the first piston 320 is opposite to the direction of the force of the elastic member 340 acting on the first piston 320, the first piston 320 drives the push rod 330 to move away from the second brake pad 120, and the push rod 330 drives the first brake shoe 110 provided on the driving member 210 to move in a direction away from the second brake shoe 120, so as to release the parking brake, in other embodiments, an elastic element may be provided in the second receiving cavity 312 and connected to the first piston 320, and the first duct is communicated with the first receiving cavity 311 of the first cylinder 310.
The first cylinder 310 includes a housing 313 and a base 314, an opening 315 is disposed on a side of the housing 313 close to the first driving assembly 200, the base 314 blocks the opening 315, the push rod 330 passes through the base 314, one end of the first piston 320 is connected to an inner wall of the housing 313, so as to divide a cavity of the first piston 320 into a first accommodating cavity 311 and a second accommodating cavity 312, a connecting hole is disposed on the base 314, one end of the push rod 330 is connected to the first piston 320, and the other end of the push rod passes through the connecting hole, a sealing ring and a bushing are disposed between the base 314 and the push rod 330, the sealing ring can enable a sealing effect to be achieved between the base 314 and the push rod 330, the bushing can reduce wear caused by relative movement between the push rod 330 and the base 314, the housing 313 and the base 314 can be connected by threads or welded, in other embodiments, the first cylinder 310 can be a closed integral cylinder, one end of the first piston 320 is connected to the inner wall of the first cylinder 310, one end of the first cylinder 310 is provided with a connection hole, one end of the push rod 330 is connected to the first piston 320, and the other end is inserted into the connection hole.
The second driving assembly 300 further includes a guide post 350 at least partially disposed in the first accommodating cavity 311, one end of the guide post 350 is connected to the housing 313, and the other end of the guide post 350 is connected to the first piston 320, so that the first piston 320 can slide along the guide post 350, specifically, a threaded hole is disposed on the housing 313, threads are disposed on both ends of the guide post 350, one end of the guide post 350 is threadedly connected to the threaded hole on the housing 313, and one end of the guide post 350 is fixed to the housing 313 through a nut and a cotter pin, connecting holes are disposed on both the first piston 320 and the push rod 330, and after the other end of the guide post 350 is respectively inserted into the connecting hole on the first piston 320 and the connecting hole on the push rod 330, a bolt cap is threadedly connected to the other end of the guide post 350, so that the other end of the guide post 350 is connected to the push rod 330, and the first piston 320 can slide along the guide post 350, and a gasket can be disposed between the bolt cap and the push rod 330 to reduce wear. When the disc brake in the embodiment of the present application fails and compressed air cannot be filled into the second receiving cavity 312, and thus the parking brake cannot be released, the cotter pin on the guide post 350 may be pulled out, and the nut is rotated and removed at the same time, and then the push rod 330 is pulled, so that the push rod 330 drives the first piston 320 and the push rod 330 to move in a direction away from the second brake pad 120, thereby releasing the parking brake.
In the disc brake of the embodiment of the present application, the elastic element 340 includes a spring 341, the spring 341 is sleeved on the guide post 350, the spring 341 is disposed in the first accommodating cavity 311, one end of the spring 341 is connected to the first piston 320, the spring 341 can provide power for moving the push rod 330 to drive the actuator 210 to perform braking, the first piston 320 makes the push rod 330 drive the first brake pad 110 disposed on the actuator 210 to move in a direction close to the second brake pad 120 under the action of the spring 341, so as to generate the parking brake, if the parking brake is released after the parking brake is achieved, compressed air is filled into the second accommodating cavity 312 on the first cylinder 310 through the first hole, when the force of the compressed air acting on the first piston 320 in the second accommodating cavity 312 is greater than the force of the spring 341 acting on the first piston 320, and because the direction of the force of the compressed air acting on the first piston 320 is opposite to the direction of the force of the spring 341 acting on the first piston 320, the first piston 320 drives the push rod 330 to start moving in a direction away from the second brake pad 120, so that the push rod 330 drives the first brake pad 110 provided on the driving member 210 to move in a direction away from the second brake pad 120, thereby releasing the parking brake. The spring 341 may be a spring used in the present technical field, the spring is a mechanical part that works by using elasticity, the part made of elastic material deforms under the action of external force, and returns to the original state (natural state) after the external force is removed, and the spring is generally made of spring steel, and the types of the spring are complex and various, and are divided into shapes, mainly including a coil spring, a spiral spring, a plate spring, a special-shaped spring, and the like.
The first driving assembly 200 further includes a second cylinder 220, the driving member 210 includes a second piston 211, the second piston 211 is disposed in the second cylinder 220, one end of the second piston 211 is connected to an inner wall of the second cylinder 220, a sealing ring may be disposed between the second piston 211 and the inner wall of the second cylinder 220, the sealing ring may be a rectangular sealing ring, the sealing ring can improve a sealing effect between the second piston 211 and the second cylinder 220, the second piston 211 is disposed between the push rod 330 and the first brake pad 110, and the push rod 330 can push the second piston 211 to move, so as to drive the first brake pad 110 to move.
The second cylinder 220 is provided with a second duct 221 communicating with the cavity of the second cylinder 220, when the chamber is filled with high-pressure liquid through the second duct 221 to implement service braking of the disc brake in the embodiment of the present application, the pressure of the high-pressure liquid acting on the second piston 211 can push the second piston 211 to move toward the second brake pad 120 and further push the first brake pad 110 to move toward the second brake pad 120, thereby implementing service braking, when the service braking needs to be released, the high-pressure liquid flows out of the cavity of the second cylinder 220 from the second duct 221 to eliminate the pressure acting on the second piston 211, thereby pushing the second piston 211 to move away from the second brake pad 120 and further pushing the first brake pad 110 to move away from the second brake pad 120, and finally, the service brake is released.
The second driving assembly 300 further includes a sealing ring 360 and a bushing 370, one end of the first piston 320 is provided with a first groove 361 and a second groove 371, the sealing ring 360 is disposed in the first groove 361, the bushing 370 is disposed in the second groove 371, the sealing ring 360 can enable a sealing effect between the first piston 320 and the first cylinder 310, the bushing can reduce abrasion caused by relative movement between the first piston 320 and the first cylinder 310, and the sealing ring 360 can be a Y-shaped sealing ring.
As shown in fig. 1, the disc brake in the embodiment of the present application further includes a bracket 400, the bracket 400 connects the first brake pad 110 and the second brake pad 120, and the bracket 400 is fixedly disposed, thereby fixedly disposing the brake assembly 100, the first drive assembly 200, and the second drive assembly 300.
As shown in fig. 2, the disc brake in the embodiment of the present application operates on the following principle:
parking and braking: the spring 341 provides power to move the push rod 330 to drive the actuator 210 to perform braking, and the first piston 320, under the force of the spring 341, causes the push rod 330 to drive the first brake shoe 110 provided on the actuator 210 to move in a direction close to the second brake shoe 120, thereby generating parking braking.
Releasing the parking brake: when the force of the compressed gas in the second receiving cavity 312 of the first cylinder 310 acting on the first piston 320 is greater than the force of the spring 341 acting on the first piston 320, and the direction of the force of the compressed gas acting on the first piston 320 is opposite to the direction of the force of the spring 341 acting on the first piston 320, the first piston 320 will drive the push rod 330 to move in the direction away from the second brake pad 120, and the push rod 330 will drive the first brake pad 110 provided on the driving member 210 to move in the direction away from the second brake pad 120, so as to release the parking brake, when the disc brake in the embodiment of the present application fails and the compressed gas cannot be filled into the second receiving cavity 312, the opening pin on the guide post 350 can be pulled out, and the nut can be removed by rotation, then, the push rod 330 is pulled, so that the push rod 330 drives the first piston 320 and the push rod 330 to move away from the second brake pad 120, thereby releasing the parking brake.
Service braking: the high-pressure liquid is filled into the cavity of the second cylinder 220 through the second hole passage 221, and when the cavity is filled with the high-pressure liquid in the cavity of the second cylinder 220, the pressure of the high-pressure liquid acting on the second piston 211 can push the second piston 211 to move towards the direction close to the second brake pad 120, and further push the first brake pad 110 to move towards the direction close to the second brake pad 120, thereby realizing service braking.
And (3) releasing the service braking, namely, the high-pressure liquid flows out of the cavity of the second cylinder 220 from the second duct 221 to eliminate the pressure acting on the second piston 211, so that the direction of pushing the second piston 211 moves away from the direction of the second brake pad 120, the first brake pad 110 is pushed to move away from the second brake pad 120, and finally the service braking is released.
The embodiment of the present application further provides an automobile, which includes a brake assembly 100, a first driving assembly 200 and a second driving assembly 300, wherein the brake assembly 100 includes a first brake shoe 110 and a second brake shoe 120, the first brake shoe 110 and the second brake shoe 120 are oppositely disposed at a distance, so as to dispose the wheel of the automobile of the present application between the first brake shoe 110 and the second brake shoe 120, the first driving assembly 200 includes a driving member 210 connected to the first brake shoe 110, the driving member 210 is configured to drive the first brake shoe 110 to move towards or away from the second brake shoe 120 for braking or braking release, the second driving assembly 300 is disposed on a side of the first driving assembly 200 away from the brake assembly 100, and includes a first cylinder 310, a first piston 320 and a push rod 330, the first piston 320 is disposed in the first cylinder 310, one end of the push rod 330 is connected to the first piston 320, and the other end of the push rod 330 is disposed in the first driving assembly 200, the first piston 320 is configured to provide power for moving the push rod 330 to drive the driving member 210 to perform braking, and provide power for moving the push rod 330 to drive the driving member 210 to release braking, so that the disc brake of the present application has both a service braking function and a parking braking function, thereby solving the problem of unreasonable design caused by the existing disc brake having both a service braking function and a parking braking function.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A disc brake, comprising:
the brake assembly comprises a first brake block and a second brake block, and the first brake block and the second brake block are oppositely arranged at intervals;
a first driving assembly including a driving member connected to the first brake pad, the driving member being configured to move the first brake pad toward or away from the second brake pad to apply or release the brake; and
the second driving assembly is arranged on one side, away from the braking assembly, of the first driving assembly and comprises a first cylinder body, a first piston and a push rod, the first piston is arranged in the first cylinder body, one end of the push rod is connected with the first piston, the other end of the push rod penetrates through the first driving assembly, and the first piston is configured to provide power for enabling the push rod to move so as to drive the driving piece to brake and provide power for enabling the push rod to move so as to drive the driving piece to brake.
2. The disc brake of claim 1, wherein the second drive assembly further includes a resilient member, the first piston separates a first receiving cavity and a second receiving cavity within the first cylinder, the push rod is at least partially disposed within the second receiving cavity, the resilient member is disposed within the first receiving cavity and is connected to the first piston, and the resilient member is configured to provide a force for moving the push rod to brake the driver.
3. The disc brake of claim 2, wherein the first cylinder block is provided with a first port communicating with the second receiving chamber.
4. The disc brake of claim 2, wherein the first cylinder includes a housing and a seat, the housing having an opening on a side thereof adjacent to the first drive assembly, the seat closing the opening, and the push rod passing through the seat.
5. The disc brake of claim 4, wherein the second drive assembly further includes a guide post at least partially disposed within the first receiving cavity, the guide post coupled at one end to the housing and at another end to the first piston such that the first piston is slidable along the guide post.
6. The disc brake of claim 5, wherein the resilient element includes a spring that is sleeved over the guide post.
7. The disc brake of claim 1, wherein the first drive assembly further includes a second cylinder, the drive member including a second piston disposed within the second cylinder, the second piston disposed between the push rod and the first brake pad.
8. The disc brake of claim 7, wherein the second cylinder block is provided with a second port communicating with the cavity of the second cylinder block.
9. The disc brake of claim 1, wherein the second drive assembly further includes a seal ring and a bushing, the first piston having a first groove and a second groove at one end, the seal ring disposed in the first groove, the bushing disposed in the second groove.
10. A motor vehicle, characterized in that it comprises a disc brake according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110893003.2A CN113653750A (en) | 2021-08-04 | 2021-08-04 | Disc brake and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110893003.2A CN113653750A (en) | 2021-08-04 | 2021-08-04 | Disc brake and car |
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| Publication Number | Publication Date |
|---|---|
| CN113653750A true CN113653750A (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110893003.2A Pending CN113653750A (en) | 2021-08-04 | 2021-08-04 | Disc brake and car |
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| CN (1) | CN113653750A (en) |
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| US20090134697A1 (en) * | 2005-12-02 | 2009-05-28 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Combined Service Brake and Stored-Energy Brake Cylinder with Internal Ventilation |
| CN112298125A (en) * | 2019-07-31 | 2021-02-02 | 比亚迪股份有限公司 | Brake-by-wire system and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4072360A (en) * | 1976-05-24 | 1978-02-07 | General Motors Corporation | Hydraulic pressure brake system with spring apply pressure release parking brake mode |
| EP0452621A1 (en) * | 1990-03-30 | 1991-10-23 | Knorr-Bremse Ag | Combined service and spring brake cylinder for vehicle brake systems, especially for utility vehicles |
| CN2647688Y (en) * | 2003-09-19 | 2004-10-13 | 丹东曙光车桥股份有限公司 | Light vehicle drive bridge assembly with disc wheel side parking braking device |
| US20090134697A1 (en) * | 2005-12-02 | 2009-05-28 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Combined Service Brake and Stored-Energy Brake Cylinder with Internal Ventilation |
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Application publication date: 20211116 |