CN110027535B - Pedal feel simulator for vehicle and vehicle with same - Google Patents
Pedal feel simulator for vehicle and vehicle with same Download PDFInfo
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- CN110027535B CN110027535B CN201810031968.9A CN201810031968A CN110027535B CN 110027535 B CN110027535 B CN 110027535B CN 201810031968 A CN201810031968 A CN 201810031968A CN 110027535 B CN110027535 B CN 110027535B
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- motor
- pedal
- push rod
- elastic
- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4081—Systems with stroke simulating devices for driver input
- B60T8/409—Systems with stroke simulating devices for driver input characterised by details of the stroke simulating device
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Elements And Transmission Devices (AREA)
- Regulating Braking Force (AREA)
- Mechanical Control Devices (AREA)
Abstract
The invention discloses a pedal feel simulator for a vehicle and the vehicle with the pedal feel simulator, wherein the vehicle comprises a pedal, the pedal feel simulator comprises a shell, a linear motor and two elastic pieces, the linear motor comprises a motor primary, a motor secondary and a motor push rod, the motor primary is fixed on the inner wall of the shell, the motor secondary is arranged in the motor primary, the motor secondary is matched with the motor primary so that the motor secondary can axially move relative to the motor primary, the motor secondary is sleeved on the motor push rod to drive the motor push rod to synchronously move, and the first end of the motor push rod extends out of the shell to be suitable for being connected with the pedal; two elastic components are respectively arranged in the shell, the lengths of the two elastic components are different, and two ends of each elastic component are respectively matched with the inner wall of the shell and the second end of the motor push rod. The pedal feel simulator for the vehicle has high response speed and good braking effect, and can provide good braking feel, particularly pedal braking feel, for the driver.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a pedal feeling simulator for a vehicle and the vehicle with the pedal feeling simulator.
Background
In the related art, a pedal in a vehicle mainly adopts a hydraulic transmission mechanism or a pneumatic transmission mechanism to perform force transmission, so that the vehicle is braked. However, the brake system using the hydraulic transmission mechanism or the pneumatic transmission mechanism has a slow response speed and poor braking performance, which brings great inconvenience to the actual operation of the driver.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, the present invention proposes a pedal feel simulator for a vehicle, which has a high response speed, has a good braking effect, and can provide a good "braking feel", particularly a pedal braking feel, to a driver.
The invention also provides a vehicle with the pedal feel simulator.
A pedal feel simulator for a vehicle according to an embodiment of a first aspect of the invention, the vehicle including a pedal, the pedal feel simulator including: a housing; the linear motor comprises a motor primary, a motor secondary and a motor push rod, the motor primary is fixed on the inner wall of the shell, the motor secondary is arranged in the motor primary, the motor secondary is matched with the motor primary to enable the motor secondary to move axially relative to the motor primary, the motor secondary is sleeved on the motor push rod to drive the motor push rod to move synchronously, and the first end of the motor push rod extends out of the shell to be suitable for being connected with the pedal; the two elastic pieces are arranged in the shell respectively, the lengths of the two elastic pieces are different, and two ends of each elastic piece are matched with the inner wall of the shell and the second end of the motor push rod respectively.
According to the pedal feel simulator for the vehicle provided by the embodiment of the invention, the linear motor and the elastic member are arranged, the elastic member can apply elastic force to the motor push rod to provide basic pedal reaction force, the motor secondary can apply acting force to the motor push rod to provide compensating force, so that the pedal feel simulator can provide optimal target pedal reaction force to the pedal, the optimal target pedal reaction force, pedal brake force and the running state of the real vehicle are matched with each other, and further when the pedal feel simulator is applied to the vehicle, the brake signal can be transmitted by adopting an electric signal, the signal transmission is rapid, the brake response is rapid, the response is sensitive, good brake feeling, particularly the pedal brake feeling can be provided for a driver, the brake feeling is more consistent with the human body feeling, and the brake effect of a brake system of the vehicle is improved (for example, the brake response time is shortened), More rational braking force) and driver's braking feel; the two elastic pieces are arranged, the elastic characteristic lines of the elastic pieces have diversity, so that the elastic characteristic lines of the elastic pieces are closer to a pedal target curve, namely the elastic force of the elastic pieces is closer to the optimal target pedal counterforce, the design requirement is more easily met, the burden of a linear motor is reduced, meanwhile, when any one of the two elastic pieces breaks down, the other elastic piece can continuously provide the elastic force to ensure the normal operation of the pedal feeling simulator, the safety coefficient of the elastic pieces is improved, the use reliability of the pedal feeling simulator is ensured, the regulation and control of the pedal braking feeling can be realized, for example, the optimal target pedal counterforce can be changed, and the different requirements of different drivers on the braking feeling are met; the pedal feeling simulator has strong integrity, can realize modular design and is convenient to produce, transport, install and use.
According to some embodiments of the invention, a first mounting protrusion is arranged on an inner wall of the housing, a second mounting protrusion is arranged on an end surface of the first mounting protrusion facing the motor push rod, an outer peripheral wall of the second mounting protrusion is located inside the outer peripheral wall of the first mounting protrusion, the two elastic members are respectively a first elastic member and a second elastic member, the first elastic member is sleeved on the first mounting protrusion, and the second elastic member is sleeved on the second mounting protrusion.
According to some embodiments of the invention, the second end of the motor push rod is provided with a third mounting protrusion, the first elastic member is sleeved on the peripheral wall of the third mounting protrusion, and the second elastic member is stopped against the end face of the third mounting protrusion.
According to some embodiments of the invention, the second mounting protrusion extends into the third mounting protrusion.
According to some embodiments of the present invention, a support is disposed on the housing, the pedal is rotatably disposed on the support, and a stop member is disposed on the pedal and stops against the first end of the motor push rod.
According to some embodiments of the invention, the stop member is a roller rotatably provided on the pedal.
According to some embodiments of the invention, the housing comprises: the motor primary is fixed on the inner wall of the main cylinder body; the bottom cover is arranged on the main cylinder body to close one side opening of the main cylinder body, and the two elastic pieces are stopped against the bottom cover; the fixed plate is arranged on the main cylinder body to close the other side opening of the main cylinder body, and the first end of the motor push rod penetrates out of the fixed plate.
According to some embodiments of the invention, the outer peripheral wall of the fixing plate is located outside the outer peripheral wall of the main cylinder.
According to some embodiments of the invention, a seal is provided between the bottom head and the main cylinder.
A vehicle according to an embodiment of a second aspect of the invention includes: the vehicle body is provided with an electronic control unit; the pedal feel simulator is the pedal feel simulator according to the embodiment of the first aspect of the invention, the shell is arranged on the vehicle body, the first end of the motor push rod is connected with the pedal, and the linear motor is connected with the electronic control unit; the displacement detection device is used for detecting the displacement of the motor push rod and is connected with the electronic control unit; and the pressure detection device is used for detecting the bearing pressure of the first end of the motor push rod and is connected with the electronic control unit.
According to the vehicle provided by the embodiment of the invention, by adopting the pedal feel simulator, an electromechanical layout can be formed in the vehicle, hydraulic pipelines and the like do not need to be arranged, the layout is flexible, the overall structure of the vehicle is convenient to arrange, the quality of the vehicle is reduced, the braking effect of a braking system of the vehicle and the braking feel of a driver are improved, and the electric braking of the vehicle is realized. Wherein, the pedal feel simulator can be installed under the floor of automobile body, and the pedal feel simulator can not occupy the space in cockpit and engine compartment this moment, has further made things convenient for arranging of vehicle overall structure, has promoted the travelling comfort of vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a cross-sectional view of a pedal feel simulator according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A circled in FIG. 1;
FIG. 3 is an enlarged view of portion B circled in FIG. 1;
FIG. 4 is a schematic view of the assembly between the pedal feel simulator and the pedal shown in FIG. 1;
FIG. 5 is an exploded view of the pedal feel simulator and pedal assembly shown in FIG. 4;
FIG. 6 is a partial schematic view of the pedal feel simulator and pedal assembly shown in FIG. 4;
FIG. 7 is a graph of elastic properties of a first elastic member, a second elastic member, and combinations thereof, according to an embodiment of the present invention;
fig. 8 is an elastic characteristic line of the first elastic member, the second elastic member and a combination thereof according to another embodiment of the present invention.
Reference numerals:
a pedal feeling simulator 100, a pedal 101, a stopper 101a, a stopper 102, a roller shaft 102a, a spring,
A housing 1, a support 10, a support rotating shaft 10a, a first fixing piece 10b, a second fixing piece 10c, a third fixing piece 10d,
A main cylinder 11, a first connecting part 111, a bottom cover 12, a bottom cover packing 120,
A first receiving groove 12a, a first mounting protrusion 121, a second mounting protrusion 122, a second connecting portion 123,
A fixed plate 13, a second receiving groove 13a, a fixed plate packing 130,
A linear motor 2, a motor primary 21, a motor secondary 22, a motor push rod 23,
A first end 23a, a second end 23b, a third mounting protrusion 231, a relief groove 231a,
A first elastic member 31, a second elastic member 32.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "length," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A pedal feel simulator 100 for a vehicle according to an embodiment of the first aspect of the invention will be described below with reference to fig. 1 to 8.
As shown in fig. 1 to 8, a pedal feel simulator 100 for a vehicle according to an embodiment of the present invention includes a pedal 101, and the pedal feel simulator 100 includes a housing 1, a linear motor 2, and two elastic members.
The linear motor 2 comprises a motor primary 21, a motor secondary 22 and a motor push rod 23, wherein the motor primary 21 is fixed on the inner wall of the shell 1, the motor secondary 22 is arranged in the motor primary 21, the motor secondary 22 is matched with the motor primary 21 to enable the motor secondary 22 to move axially relative to the motor primary 21, the motor secondary 22 is sleeved on the motor push rod 23 to drive the motor push rod 23 to move synchronously, and a first end 23a of the motor push rod 23 extends out of the shell 1 to be suitable for being connected with the pedal 101. The two elastic members are respectively arranged in the shell 1, the lengths of the two elastic members are different, and two ends of each elastic member are respectively matched with the inner wall of the shell 1 and the second end 23b of the motor push rod 23.
For example, as shown in fig. 1 to 6, the housing 1 may be formed substantially in a cylindrical structure and an accommodating space may be defined in the housing 1, the motor primary 21 and the motor secondary 22 may be both located in the accommodating space, the motor primary 21 is fixed on the housing 1 to support the housing 1, further ensuring the strength and stability of the housing 1, and the motor push rod 23 may be inserted through the housing 1 such that a portion of the motor push rod 23 is located in the accommodating space and another portion of the motor push rod 23 is located outside the accommodating space.
The motor primary 21 and the motor secondary 22 may both form an annular structure, the motor push rod 23, the motor secondary 22 and the motor primary 21 may be sequentially arranged from inside to outside, that is, the motor secondary 22 is sleeved outside the motor push rod 23, and the motor primary 21 is sleeved outside the motor secondary 22, wherein the motor secondary 22 may be fixed on the motor push rod 23, and the motor primary 21 and the motor secondary 22 are arranged at intervals inside and outside, and the motor primary 21 and the motor secondary 22 interact with each other to enable the motor secondary 22 to move relative to the motor primary 21 along the axial direction of the linear motor 2, so that the motor secondary 22 may drive the motor push rod 23 to move synchronously. The linear motor 2 has the advantages of compact structure, low power loss, high reaction speed, accurate positioning, low noise, long service life and the like.
The two elastic members have different lengths and two ends of each elastic member are respectively matched with the inner wall of the shell 1, such as the bottom wall of the shell 1 and the second end 23b of the motor push rod 23, so that when the motor push rod 23 moves along the axial direction of the linear motor 2 when the vehicle needs to be braked, the axial distance between the second end 23b of the motor push rod 23 and the inner wall of the shell 1 is changed, the elastic members can apply elastic force to the motor push rod 23, and the first end 23a of the motor push rod 23 is connected with the pedal 101, so that the elastic members can provide basic pedal counter force. Here, the phrase "the two elastic members have different lengths" means that the two elastic members have different axial lengths when the pedal feel simulator 100 is at the initial position (the driver does not step on the pedal 101) after the pedal feel simulator 100 is assembled and connected to the pedal 101.
When the pedal feel simulator 100 is applied to a vehicle, when the vehicle needs to be braked, a driver depresses the pedal 101 to transmit the pedaling force of the driver to the linear motor 2 and the elastic member through the motor push rod 23, and the elastic member can apply the elastic force to the motor push rod 23 to provide a basic pedal reaction force, so that the 'braking feel' of the pedal 101 when the brake system works is ensured; the detection device on the vehicle, for example, the sensor, may detect parameters such as the magnitude of the pedaling force, the moving displacement of the motor push rod 23 or the motor secondary 22, the moving speed of the motor push rod 23 or the motor secondary 22, and transmit the detection result to an Electronic Control Unit (ECU) of the vehicle to analyze the detection result, so as to calculate an optimal target pedal reaction force and a compensation force that the linear motor 2 needs to provide, where the compensation force that the linear motor 2 needs to provide may be a difference between the optimal target pedal reaction force and the base pedal reaction force, and at this time, the Electronic Control Unit transmits the optimization result to the linear motor 2, and the linear motor 2 receives signals to enable the motor primary 21 and the motor secondary 22 to interact with each other, so that the motor secondary 22 can apply a corresponding compensation force to the motor push rod 23, and the sum of the base pedal reaction force and the compensation force to form the optimal target pedal reaction force, the optimal target pedal reaction force acts on the motor push rod 23 to be matched with the running state of the real vehicle, so that the pedal feeling effect of a driver when stepping on the pedal 101 can be improved, and the operation comfort of the driver can be improved; meanwhile, the electronic control unit can analyze and obtain a final braking scheme according to the optimal target pedal reaction force and by combining the running state, the real-time road condition and the like of the real vehicle, and transmits corresponding signals to the actuating mechanism to realize the braking of the vehicle.
Here, it should be noted that the "brake feeling" is a comprehensive feeling, and may include a pedal brake feeling, which is the most important component, a vehicle brake deceleration felt by the driver, an audible brake noise, a visual vehicle deceleration, and the like.
It can be understood that both ends of each elastic member respectively cooperate with the inner wall of the housing 1 and the second end 23b of the motor push rod 23, when the driver does not step on the pedal 101 and the pedal feel simulator 100 is in the initial position, both ends of at least one of the two elastic members respectively abut against the inner wall of the housing 1 and the second end 23b of the motor push rod 23, so that when the driver steps on the pedal 101, at least one elastic member can apply an elastic force to the motor push rod 23 to provide a basic pedal reaction force. For example, when the driver does not step on the pedal 101 and the pedal feel simulator 100 is in the initial position, two ends of one of the two elastic members respectively abut against the inner wall of the housing 1 and the second end 23b of the motor push rod 23, one end of the other of the two elastic members may abut against one of the inner wall of the housing 1 and the second end 23b of the motor push rod 23, and the other end may be spaced from the other of the inner wall of the housing 1 and the second end 23b of the motor push rod 23, the driver starts to step on the pedal 101 to move the motor push rod 23 along the axial direction of the linear motor 2, the one of the two elastic members applies an elastic force to the motor push rod 23, and when the motor push rod 23 moves to a position where the two ends of the other of the two elastic members respectively abut against the inner wall of the housing 1 and the second end 23b of the motor push rod 23, the two elastic members start to work simultaneously, While applying an elastic force to the motor push rod 23. For another example, when the driver does not step on the pedal 101 and the pedal feel simulator 100 is at the initial position, two ends of each of the two elastic members respectively abut against the inner wall of the housing 1 and the second end 23b of the motor push rod 23, the driver starts to step on the pedal 101 to move the motor push rod 23 along the axial direction of the linear motor 2, and the two elastic members simultaneously start to work and apply an elastic force to the motor push rod 23.
When the driver does not step on the pedal 101 and the pedal feel simulator 100 is in the initial position, the states of the two elastic members can be set according to actual requirements. For example, both elastic members may be in a natural state (the elastic members are not pre-compressed), or both elastic members may be in a pre-compressed state, or one of the two elastic members may be in a pre-compressed state and the other in a natural state.
According to the pedal feel simulator 100 for the vehicle of the embodiment of the invention, by arranging the linear motor 2 and the elastic member, the elastic member can apply an elastic force to the motor push rod 23 to provide a basic pedal reaction force, the motor secondary 22 can apply an acting force to the motor push rod 23 to provide a compensating force, so that the pedal feel simulator 100 can provide an optimal target pedal reaction force to the pedal 101, and thus the optimal target pedal reaction force, pedal brake force and the running state of the real vehicle are matched with each other, and further, when the pedal feel simulator 100 is applied to the vehicle, an electric signal can be used for transmitting a brake signal, so that the signal transmission is rapid, the brake response is rapid, the response is sensitive, and simultaneously a good "brake feel", especially the pedal brake feel, can be provided for the driver, so that the "brake feel" better conforms to the human body feeling ", and thus the brake effect of the brake system of the vehicle is improved (for example, the brake response time is shortened), More rational braking force) and driver's braking feel; the two elastic pieces are arranged, the elastic characteristic lines of the elastic pieces have diversity, so that the elastic characteristic lines of the elastic pieces are closer to a pedal target curve, namely the elastic force of the elastic pieces is closer to the optimal target pedal counterforce, the design requirement is more easily met, the burden of the linear motor 2 is reduced, meanwhile, when any one of the two elastic pieces breaks down, the other elastic piece can continuously provide the elastic force to ensure the normal operation of the pedal feeling simulator 100, the safety coefficient of the elastic pieces is improved, the use reliability of the pedal feeling simulator 100 is ensured, the safety of a driver is ensured, the regulation and control of the pedal braking feeling can be realized, for example, the optimal target pedal counterforce can be changed, the different requirements of different drivers on the 'braking feeling' are met, and the regulation and the control are convenient; the pedal feel simulator 100 has strong integrity, can realize modular design, and is convenient to produce, transport, install and use.
In some alternative embodiments of the present invention, a first mounting protrusion 121 is disposed on an inner wall of the housing 1, a second mounting protrusion 122 is disposed on an end surface of the first mounting protrusion 121 facing the motor push rod 23, an outer circumferential wall of the second mounting protrusion 122 is located inside the outer circumferential wall of the first mounting protrusion 121, the two elastic members are a first elastic member 31 and a second elastic member 32, respectively, the first elastic member 31 is sleeved on the first mounting protrusion 121, and the second elastic member 32 is sleeved on the second mounting protrusion 122. For example, in the example of fig. 1 and 4, the first mounting protrusion 121 may be provided on the bottom wall of the housing 1, the first mounting protrusion 121 may be formed by a portion of the inner wall of the bottom wall protruding toward the direction approaching the motor push rod 23, the second mounting protrusion 122 may be formed by a portion of the end surface of the first mounting protrusion 121 facing the motor push rod 23 protruding toward the direction approaching the motor push rod 23, the first mounting protrusion 121 and the second mounting protrusion 122 may each be formed substantially as a solid structure and the cross-sectional area of the second mounting protrusion 122 is smaller than that of the first mounting protrusion 121, and the first mounting protrusion 121 and the second mounting protrusion 122 may be coaxially provided. The first elastic member 31 and the second elastic member 32 can be nested inside and outside and the first elastic member 31 can be sleeved outside the second elastic member 32, and the lower end (e.g., the lower end in fig. 1) of the first elastic member 31 is sleeved outside the first mounting protrusion 121, and the lower end of the second elastic member 32 is sleeved outside the second mounting protrusion 122, so that the lower end of the first elastic member 31 can be matched with the outer peripheral wall of the first mounting protrusion 121, the lower end of the second elastic member 32 can be matched with the outer peripheral wall of the second mounting protrusion 122, therefore, the first mounting protrusion 121 and the second mounting protrusion 122 can respectively position the first elastic member 31 and the second elastic member 32, so that the first elastic member 31 and/or the second elastic member 32 cannot provide basic pedal reaction force better due to the change of the position of the first elastic member 31 and/or the second elastic member 32, and the pedal braking feeling is further ensured; meanwhile, the interval between the first elastic piece 31 and the second elastic piece 32 is ensured, so that the first elastic piece 31 and the second elastic piece 32 are arranged at intervals inside and outside, and the first elastic piece 31 and the second elastic piece 32 do not interfere with each other and work independently; and the first elastic element 31 and the second elastic element 32 can be coaxially mounted, so that a first elastic force applied to the motor push rod 23 by the first elastic element 31 and a second elastic force applied to the motor push rod 23 by the second elastic element 32 are relatively balanced.
It is understood that the first elastic member 31 and the second elastic member 32 may also be disposed in a non-inner-outer nested manner, for example, the first elastic member 31 and the second elastic member 32 may be disposed opposite to each other in a radial direction of the linear motor 2. The first elastic member 31 and the second elastic member 32 may be both springs, but are not limited thereto. When the first elastic member 31 and the second elastic member 32 are both springs, the springs may be linear springs, nonlinear springs, and the like, and the inner diameters of the springs may be constant along the axial direction of the springs, or may gradually increase or decrease along the axial direction of the springs, for example, the springs may be cylindrical springs or conical springs, and the stiffness coefficients of the springs may be the same or different.
As shown in fig. 1 to 8, when the pedal feel simulator 100 is applied to a vehicle, when a driver does not step on the pedal 101, the pedal feel simulator 100 is in an initial position, and at this time, the state and the starting time of the first elastic member 31 and the state and the starting time of the second elastic member 32 can be set according to actual requirements. For example, when the pedal feel simulator 100 is in the initial position, the first elastic member 31 and the second elastic member 32 are both in the pre-compression state, that is, the first elastic member 31 and the second elastic member 32 are both in the compression state to generate the acting force on the motor push rod 23; when the driver steps on the pedal 101, the first elastic member 31 and the second elastic member 32 operate simultaneously. Or, when the pedal feel simulator 100 is in the initial position, the first elastic element 31 is in the pre-compression state, and the second elastic element 32 is in the natural state, at this time, the first elastic element 31 generates an acting force on the motor push rod 23, the second elastic element 32 does not generate an acting force on the motor push rod 23, the lower end of the second elastic element 32 can be abutted against the inner wall of the housing 1, and the upper end of the second elastic element 32 and the second end 23b of the motor push rod 23 can be abutted against each other or can be arranged at intervals; when the pedal feel simulator 100 is at the initial position and the upper end of the second elastic member 32 abuts against the second end 23b of the motor push rod 23, the driver steps on the pedal 101, and the displacement of the pedal 101 is greater than zero, the first elastic member 31 and the second elastic member 32 operate simultaneously, or, when the pedal feel simulator 100 is at the initial position and the upper end of the second elastic member 32 and the second end 23b of the motor push rod 23 are spaced apart from each other, the displacement of the pedal 101 reaches its set value, or the displacement of the motor push rod 23 reaches its set value, the first elastic member 31 and the second elastic member 32 operate simultaneously, that is, after the second end 23b of the motor push rod 23 moves to abut against the upper end of the second elastic member 32, the second elastic member 32 starts to operate, and when the displacement of the pedal 101 does not reach its set value, or the displacement of the motor push rod 23 does not reach its set value, only the first elastic member 31 operates. For another example, when the pedal feel simulator 100 is at the initial position, the first elastic member 31 and the second elastic member 32 are both in a natural state, and at this time, the first elastic member 31 and the second elastic member 32 both do not exert an elastic force on the motor push rod 23, the upper end of the first elastic member 31 may abut against the second end 23b of the motor push rod 23, the lower end of the first elastic member 31 may abut against the inner wall of the housing 1, the lower end of the second elastic member 32 may abut against the inner wall of the housing 1, and the upper end of the second elastic member 32 may abut against or be spaced from the second end 23b of the motor push rod 23. But is not limited thereto.
Further, as shown in fig. 1 and 4, the cross-sectional area of the first mounting protrusion 121 may gradually increase from top to bottom, for example, the first mounting protrusion 121 is formed in a circular truncated cone shape, thereby facilitating the mounting of the first elastic member 31; the cross-sectional area of the second mounting protrusion 122 may gradually increase from top to bottom, for example, the second mounting protrusion 122 is formed in a truncated cone shape, thereby facilitating the mounting of the second elastic member 32. It is understood that the cross-sectional area of the first mounting protrusion 121 may also be constant from top to bottom, and the cross-sectional area of the second mounting protrusion 122 may also be constant from top to bottom, but is not limited thereto.
In a further embodiment of the present invention, the second end 23b of the motor push rod 23 is provided with a third mounting protrusion 231, the first elastic member 31 is sleeved on the outer peripheral wall of the third mounting protrusion 231, and the second elastic member 32 is stopped against the end surface of the third mounting protrusion 231. For example, in the example of fig. 1 and 4, the third mounting protrusion 231 may be formed by a portion of an end surface of the second end 23b of the motor push rod 23 protruding toward a direction close to the first mounting protrusion 121, an upper end (e.g., an upper end as in fig. 1) of the first elastic member 31 is sleeved outside the third mounting protrusion 231, the upper end of the first elastic member 31 may be fitted to an outer peripheral wall of the third mounting protrusion 231, the upper end of the second elastic member 32 is stopped against the end surface of the third mounting protrusion 231, and the second elastic member 32 may be in a natural state or a pre-compressed state, so that the third mounting protrusion 231 may further position the first elastic member 31 while further ensuring a space between the first elastic member 31 and the second elastic member 32.
Further, as shown in fig. 1 and 4, the cross-sectional area of the third installation projection 231 may be gradually increased from top to bottom, thereby further facilitating the installation of the first elastic member 31. It is understood that the cross-sectional area of the third mounting protrusion 231 may also be constant from the top down, but is not limited thereto.
Optionally, the second mounting protrusion 122 protrudes into the third mounting protrusion 231. For example, as shown in fig. 1 and 4, an avoiding groove 231a is formed on the third mounting protrusion 231, the avoiding groove 231a may be formed by a portion of the end surface of the third mounting protrusion 231 being recessed toward a direction away from the first mounting protrusion 121, at this time, in the process that the motor push rod 23 moves along the axial direction of the linear motor 2 toward a direction close to the first mounting protrusion 121, the second mounting protrusion 122 may extend into the avoiding groove 231a, so as to avoid that the pedal feel simulator 100 cannot normally operate due to collision between the second mounting protrusion 122 and the third mounting protrusion 231, and simultaneously limit the displacement of the motor push rod 23, i.e., limit the stroke of the motor push rod 23, reduce the axial dimension of the pedal feel simulator 100, and make the structure of the pedal feel simulator 100 compact and occupy a small space.
It can be understood that the second end 23b of the motor push rod 23 is not provided with the third mounting protrusion 231 but is formed with a groove (not shown), the second mounting protrusion 122 may extend into the groove during the process of moving the motor push rod 23 in the axial direction of the linear motor 2 toward the direction close to the first mounting protrusion 121, at this time, the upper end of the first elastic member 31 may be stopped against the end surface of the second end 23b of the motor push rod 23, and the upper end of the second elastic member 32 may be stopped against the end surface of the second end 23b of the motor push rod 23 or the wall surface of the groove.
In some embodiments of the present invention, the housing 1 is provided with a support 10, the pedal 101 is rotatably disposed on the support 10, and the pedal 101 is provided with a stop member 102 which stops against the first end 23a of the motor push rod 23. For example, as shown in fig. 4 to 6, a support 10 may be provided at a side of the housing 1 adjacent to the pedal 101, the pedal 101 may be rotatably provided on the support 10 by a support rotation shaft 10a, and a stopper 102 may be provided at a side of the pedal 101 facing the motor push rod 23, so that the pedal 101 may transmit the driver's pedaling force to the motor push rod 23 by the stopper 102, while further reducing the occupied space of the pedal feel simulator 100.
In some embodiments of the present invention, the stopping member 102 is a roller rotatably disposed on the pedal 101. For example, in the example of fig. 4-6, the roller may be rotatably mounted on the pedal 101 through the roller rotating shaft 102a, when the driver steps on the pedal 101, the pedal 101 may rotate around the seat rotating shaft 10a, so that the roller may also rotate around the seat rotating shaft 10a, so that the roller may push the motor push rod 23 to move the motor push rod 23 toward the first mounting protrusion 121, so that the motor push rod 23 compresses the first elastic member 31 and/or the second elastic member 32, during which the roller may rotate around the roller rotating shaft 102a, so that the roller is in rolling contact with the first end 23a of the motor push rod 23, friction between the roller and the motor push rod 23 is reduced, wear of the roller and the motor push rod 23 is reduced, thereby improving the reliability of the use of the pedal feel simulator 100 and ensuring the pedal braking feel of the driver.
In some embodiments of the present invention, the housing 1 includes a main cylinder 11 with two open sides, a bottom cover 12 and a fixing plate 13, the motor primary 21 is fixed on the inner wall of the main cylinder 11, the bottom cover 12 is disposed on the main cylinder 11 to close one side open opening of the main cylinder 11, the two elastic members are stopped against the bottom cover 12, the fixing plate 13 is disposed on the main cylinder 11 to close the other side open opening of the main cylinder 11, and a first end 23a of the motor push rod 23 penetrates the fixing plate 13. For example, as shown in fig. 1 to 5, the main cylinder 11 may be formed in a substantially cylindrical structure, two axial ends of the main cylinder 11 are open, the bottom cover 12 is disposed at one axial end of the main cylinder 11, and the fixing plate 13 is disposed at the other axial end of the main cylinder 11, so that a closed accommodating space is defined between the bottom cover 12, the main cylinder 11, and the fixing plate 13, so that dust, water, and the like cannot enter the accommodating space, and the dustproof and waterproof effects of the pedal feel simulator 100 are achieved. The lower ends of the two elastic members (e.g., the lower ends as shown in fig. 1) are stopped against the bottom cover 12, and the motor push rod 23 can be inserted through the fixing plate 13, such that the first end 23a of the motor push rod 23 penetrates through the fixing plate 13 to be suitable for being connected with the pedal 101.
Specifically, as shown in fig. 1, 3, 4 and 6, one end of the main cylinder 11 connected to the fixed plate 13 may be formed with a first connection portion 111, the first connection portion 111 may be formed to protrude outward in a radial direction of the main cylinder 11, and a first fixing member 10b is inserted into the first connection portion 111, so that the main cylinder 11 and the fixed plate 13 may be fixedly connected by the first fixing member 10 b; the outer edge of the bottom cover 12 may be formed with a second connecting portion 123, the second connecting portion 123 may be formed to protrude outward in the radial direction of the bottom cover 12, and a second fixing member 10c is inserted into the second connecting portion 123, so that the main cylinder 11 and the bottom cover 12 can be fixedly connected by the second fixing member 10 c; the third fixing member 10d is provided on the fixing plate 13 in a penetrating manner, so that the pedal feel simulator 100 can be fixed on the vehicle through the third fixing member 10d, which facilitates the installation of the pedal feel simulator 100, and the fixing plate 13 can play a role of supporting the pedal feel simulator 100. The first fixing member 10b, the second fixing member 10c, and the third fixing member 10d may be bolts.
In some embodiments of the present invention, as shown in fig. 1, 4-6, the outer circumferential wall of the fixed plate 13 is located outside the outer circumferential wall of the main cylinder 11, so that the third fixing member 10d is easily penetrated on the fixed plate 13 to mount the pedal feel simulator 100 on the vehicle. Here, the direction "outer" refers to a direction away from the center axis of the pedal feel simulator 100, and the opposite direction is defined as "inner".
Further, a gasket is provided between the bottom cover 12 and the main cylinder 11. For example, in the example of fig. 1, 3 and 4, the bottom cover sealing ring 120 is provided between the bottom cover 12 and the main cylinder 11, so that the sealing performance between the bottom cover 12 and the main cylinder 11 is improved, the sealing performance of the housing 1 is further ensured, and the dust-proof and water-proof effects of the pedal feel simulator 100 are improved.
Wherein, at least one of the lower cap 12 and the main cylinder 11 may be formed with a first receiving groove 12a, and the lower cap packing 120 may be disposed in the first receiving groove 12a to limit the lower cap packing 120. For example, in the example of fig. 1, 3 and 4, the first receiving groove 12a is formed on the peripheral wall of the bottom cover 12, and the first receiving groove 12a may be formed by a part of the peripheral wall of the bottom cover 12 being recessed inward. Of course, the first receiving groove 12a may be formed in the main cylinder 11, or the first receiving groove 12a may be formed in both the lower cap 12 and the main cylinder 11, and the first receiving groove 12a in the lower cap 12 and the first receiving groove 12a in the main cylinder 11 may be disposed opposite to each other to receive the lower cap packing 120.
As shown in fig. 1, 2 and 4, a through hole penetrating through the fixing plate 13 along the thickness direction is formed on the fixing plate 13, the first end 23a of the motor push rod 23 penetrates out of the fixing plate 13 through the through hole, and a fixing plate sealing ring 130 is arranged between the motor push rod 23 and the wall surface of the through hole to improve the sealing performance between the motor push rod 23 and the fixing plate 13, thereby further ensuring the sealing performance of the housing 1 and improving the dustproof and waterproof effects of the pedal feel simulator 100. Wherein, part of the wall surface of the through hole may be recessed outward to form a second receiving groove 13a, and the fixing plate sealing ring 130 may be disposed in the second receiving groove 13a to achieve the limiting of the fixing plate sealing ring 130.
The vehicle according to the second aspect embodiment of the invention includes a vehicle body, a pedal feel simulator 100, displacement detection means, and pressure detection means, wherein the pedal feel simulator 100 is the pedal feel simulator 100 according to the above-described first aspect embodiment of the invention. The vehicle may be an electric automobile, but is not limited thereto.
An electronic control unit is arranged on the vehicle body, the shell 1 of the pedal feeling simulator 100 is arranged on the vehicle body, the first end 23a of the motor push rod 23 is connected with the pedal 101, and the linear motor 2 is connected with the electronic control unit. The displacement detection device can be used for detecting the displacement of the motor push rod 23 and is connected with the electronic control unit, so that the displacement detection device can transmit a detection result to the electronic control unit, the pressure detection device can be used for detecting the bearing pressure of the first end 23a of the motor push rod 23 and is connected with the electronic control unit, and the pressure detection device can transmit the detection result to the electronic control unit. The electronic control unit can analyze the detection results of the displacement detection device and the pressure detection device, calculate the optimal target pedal reaction force and the compensation force required to be provided by the linear motor 2, transmit the optimization result to the linear motor 2, receive signals by the linear motor 2 to enable the motor primary 21 and the motor secondary 22 to interact with each other, enable the motor secondary 22 to apply corresponding compensation force to the motor push rod 23, and accordingly improve the pedal feeling effect when a driver steps on the pedal 101; meanwhile, the electronic control unit can analyze and obtain a final braking scheme according to the optimal target pedal reaction force and by combining the running state, the real-time road condition and the like of the real vehicle, and transmits corresponding signals to the actuating mechanism to realize the braking of the vehicle. Wherein, the concrete position of displacement detection device and pressure detection device can specifically set up according to actual demand.
According to the vehicle provided by the embodiment of the invention, by adopting the pedal feel simulator 100, an electromechanical layout can be formed in the vehicle, hydraulic pipelines and the like do not need to be arranged, the layout is flexible, the overall structure of the vehicle is convenient to arrange, the quality of the vehicle is reduced, the braking effect of a braking system of the vehicle and the braking feel of a driver are improved, and the electric braking of the vehicle is realized. Wherein, the pedal feel simulator 100 can be installed under the floor of the vehicle body, and the pedal feel simulator 100 can not occupy the space of the cockpit and the engine compartment at the moment, thereby further facilitating the arrangement of the overall structure of the vehicle and improving the comfort of the vehicle.
Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
The pedal feel simulator 100 for a vehicle according to the embodiments of the present invention will be described in detail in two specific embodiments with reference to fig. 1 to 8. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
Example one
In the present embodiment, as shown in fig. 1 to 7, the pedal feel simulator 100 includes a housing 1, a linear motor 2, a first elastic member 31, and a second elastic member 32.
The housing 1 includes a main cylinder 11, a bottom cover 12, and a fixing plate 13, the main cylinder 11 is formed substantially in a cylindrical structure, both axial ends of the main cylinder 11 are open, the bottom cover 12 is provided at one axial end (e.g., a lower end as viewed in fig. 1) of the main cylinder 11, and the fixing plate 13 is provided at the other axial end (e.g., an upper end as viewed in fig. 1) of the main cylinder 11, such that the bottom cover 12, the main cylinder 11, and the fixing plate 13 collectively define a closed accommodation space therebetween. Specifically, as shown in fig. 1 to 6, a first connecting portion 111 is formed at the upper end of the main cylinder 11, the first connecting portion 111 is formed to protrude outward in the radial direction of the main cylinder 11, a first fixing member 10b is inserted into the first connecting portion 111, and the main cylinder 11 and the fixing plate 13 are fixedly connected by the first fixing member 10 b; a second connecting part 123 is formed at the outer edge of the bottom cover 12, the second connecting part 123 is formed by protruding outwards along the radial direction of the bottom cover 12, a second fixing piece 10c is arranged on the second connecting part 123 in a penetrating way, and the main cylinder body 11 and the bottom cover 12 are fixedly connected through the second fixing piece 10 c; the outer peripheral wall of the fixed plate 13 is located outside the outer peripheral wall of the main cylinder 11, and a third fixing member 10d is penetrated through the fixed plate 13, so that the pedal feel simulator 100 can be fixed to the vehicle by the third fixing member 10d when the pedal feel simulator 100 is applied to the vehicle. The first fixing member 10b, the second fixing member 10c, and the third fixing member 10d are all bolts.
Further, as shown in fig. 1 to 4, a first receiving groove 12a is formed in the outer circumferential wall of the lower cap 12, the first receiving groove 12a is located above the second connecting portion 123, and the lower cap packing 120 between the lower cap 12 and the main cylinder 11 is disposed in the first receiving groove 12 a. The linear motor 2 comprises a motor primary 21, a motor secondary 22 and a motor push rod 23, wherein the motor primary 21 and the motor secondary 22 are both formed into an annular structure, the motor push rod 23, the motor secondary 22 and the motor primary 21 can be sequentially arranged from inside to outside, the motor primary 21 and the motor secondary 22 are both positioned in the accommodating space, the motor primary 21 is fixed on the inner wall of the shell 1, the motor secondary 22 and the motor primary 21 are arranged at intervals inside and outside, the motor secondary 22 is fixed on the motor push rod 23, the motor primary 21 and the motor secondary 22 interact with each other to enable the motor secondary 22 to move relative to the motor primary 21 along the axial direction of the pedal feeling simulator 100, and therefore the motor secondary 22 can drive the motor push rod 23 to synchronously move. A through hole penetrating through the fixing plate 13 along the thickness direction of the fixing plate 13 is formed in the fixing plate 13, a part of the wall surface of the through hole is recessed outwards to form a second accommodating groove 13a, the first end 23a of the motor push rod 23 penetrates out of the fixing rod through the through hole, and a fixing plate sealing ring 130 between the motor push rod 23 and the wall surface of the through hole is arranged in the second accommodating groove 13 a.
As shown in fig. 1 and 4, a first mounting protrusion 121 is provided on the bottom cover 12, the first mounting protrusion 121 is formed by protruding a part of the inner wall of the bottom cover 12 upward, a second mounting protrusion 122 is provided on the upper end surface of the first mounting protrusion 121, a second mounting protrusion 122 is formed by protruding a part of the upper end surface of the first mounting protrusion 121 upward, the first mounting protrusion 121 and the second mounting protrusion 122 are coaxially provided, the first mounting protrusion 121 and the second mounting protrusion 122 are both formed in a circular truncated cone shape, and the cross-sectional area of the second mounting protrusion 122 is smaller than that of the first mounting protrusion 121. The second end 23b of the motor push rod 23 is provided with a third mounting protrusion 231, the third mounting protrusion 231 is formed by a part of the end surface of the second end 23b of the motor push rod 23 protruding downwards, an avoiding groove 231a is formed on the third mounting protrusion 231, and the second mounting protrusion 122 can be fitted in the avoiding groove 231a from bottom to top.
The first elastic member 31 and the second elastic member 32 are nested inside and outside, the first elastic member 31 is sleeved outside the second elastic member 32, when the pedal feel simulator 100 is at the initial position, the lower end of the first elastic member 31 is sleeved outside the first mounting protrusion 121 so that the lower end of the first elastic member 31 abuts against the bottom cover 12, the upper end of the first elastic member 31 is sleeved outside the third mounting protrusion 231 so that the upper end of the first elastic member 31 abuts against the end surface of the second end 23b of the motor push rod 23, the lower end of the second elastic member 32 is sleeved outside the second mounting protrusion 122 so that the lower end of the second elastic member 32 abuts against the upper end surface of the first mounting protrusion 121, and the upper end of the second elastic member 32 abuts against the end surface of the third mounting protrusion 231.
The first elastic member 31 and the second elastic member 32 are both springs, and the initial length of the first elastic member 31 is greater than the initial length of the second elastic member 32, that is, when the driver does not step on the pedal 101 and the pedal feel simulator 100 is at the initial position, the axial length of the first elastic member 31 is greater than the axial length of the second elastic member 32. As shown in fig. 7, the first elastic member 31 and the second elastic member 32 are both linear springs, and the stiffness coefficient of the first elastic member 31 is greater than that of the second elastic member 32. When the driver does not step on the pedal 101, the pedal feel simulator 100 is in an initial position, and at the moment, the first elastic member 31 and the second elastic member 32 are in a natural state; when the driver steps on the pedal 101, the first elastic member 31 and the second elastic member 32 simultaneously start to work to apply an elastic force to the motor push rod 23, and at this time, the first elastic force of the first elastic member 31 and the second elastic force of the second elastic member 32 may be superimposed to form an elastic force of a combined elastic member (including the first elastic member 31 and the second elastic member 32).
When the pedal feel simulator 100 is applied to a vehicle, the vehicle further includes a pedal 101, a vehicle body, a displacement detection device and a pressure detection device, the pedal 101 is formed into a substantially flat plate structure, an electronic control unit is provided on the vehicle body, the linear motor 2 is connected to the electronic control unit, the housing 1 of the pedal feel simulator 100 is mounted on the vehicle body through the third fixing member 10d, the displacement detection device is used for detecting the displacement amount of the motor push rod 23 and is connected to the electronic control unit, so that the displacement detection device can transmit a detection result to the electronic control unit, the pressure detection device is used for detecting the bearing pressure of the first end 23a of the motor push rod 23 and is connected to the electronic control unit, so that the pressure detection device can transmit the detection result to the electronic control unit.
The fixed plate 13 is provided with a support 10, and the pedal 101 is rotatably arranged on the support 10 through a support rotating shaft 10a, namely the support rotating shaft 10a can be used as a rotating fulcrum of the pedal 101; the pedal 101 is provided with a stopping part 102 which stops against the first end 23a of the motor push rod 23, and the pedal 101 can transmit the treading force of the driver to the motor push rod 23 through the stopping part 102; the pedal 101 is formed with a limiting portion 101a, and the limiting portion 101a and the stopping member 102 are respectively located at two sides of the support rotating shaft 10a, so that the limiting portion 101a can play a limiting role, the pedal 101 is prevented from reversely rotating at an initial position, and the operation of a driver is facilitated. The stopping member 102 is a roller, and the roller is rotatably mounted on the pedal 101 through a roller shaft 102 a.
When a vehicle needs braking, a driver steps on the pedal 101, the pedal 101 rotates anticlockwise around the support rotating shaft 10a, the distance between the stepping force of the driver on the pedal 101 and the support rotating shaft 10a is larger than the distance between the roller and the support rotating shaft 10a, so that the stepping force is amplified and then transmitted to the motor push rod 23 through the stopping piece 102, the motor push rod 23 moves downwards along the axial direction of the pedal feeling simulator 100 to compress the first elastic piece 31 and the second elastic piece 32, the first elastic piece 31 and the second elastic piece 32 can apply elastic force to the motor push rod 23 to provide basic pedal counterforce, and the 'braking feeling' of the pedal 101 is ensured when the braking system works; the displacement detection device, such as a displacement sensor, can detect the displacement of the motor push rod 23 and/or the displacement of the motor secondary 22 and transmit the detection result to the electronic control unit, the pressure detection device, such as a pressure sensor, can detect the pressure bearing force of the first end 23a of the motor push rod 23 and transmit the detection result to the electronic control unit through an electric signal to analyze the detection result, the electronic control unit can calculate the optimal target pedal reaction force and the compensation force required to be provided by the linear motor 2, the compensation force required to be provided by the linear motor 2 can be the difference between the optimal target pedal reaction force and the basic pedal reaction force, at this time, the electronic control unit also transmits the optimization result to the linear motor 2 through the electric signal, the linear motor 2 receives the signal to enable the motor primary 21 and the motor secondary 22 to interact, so that the motor secondary 22 can apply corresponding compensation force to the motor push rod 23, the sum of the basic pedal reaction force and the compensation force forms the optimal target pedal reaction force, and the optimal target pedal reaction force acts on the motor push rod 23 to be matched with the running state of the real vehicle, so that the pedal feeling effect of a driver when stepping on the pedal 101 can be improved, and the operation comfort of the driver can be improved; meanwhile, the electronic control unit can analyze and obtain a final braking scheme according to the optimal target pedal reaction force and by combining the running state, the real-time road condition and the like of the real vehicle, and transmits corresponding signals to the actuating mechanism to realize the braking of the vehicle.
Example two
As shown in fig. 8, the present embodiment has substantially the same structure as the first embodiment, wherein the same reference numerals are used for the same components, except that: when a driver does not step on the pedal 101 and the pedal feel simulator 100 is in an initial position, the first elastic member 31 and the second elastic member 32 are both in a natural state, two ends of the first elastic member 31 are respectively abutted against the inner wall of the housing 1 and the second end 23b of the motor push rod 23, the lower end of the second elastic member 32 is abutted against the inner wall of the housing 1, and the upper end of the second elastic member 32 is arranged at an interval with the second end 23b of the motor push rod 23. When a driver steps on the pedal 101, the first elastic member 31 firstly works to apply an elastic force to the motor push rod 23, and when the displacement of the pedal 101 reaches a set value thereof or the displacement of the motor push rod 23 reaches a set value thereof, the second elastic member 32 only starts to work, and at this time, the first elastic member 31 and the second elastic member 32 both apply an elastic force to the motor push rod 23.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
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| CN201810031968.9A CN110027535B (en) | 2018-01-12 | 2018-01-12 | Pedal feel simulator for vehicle and vehicle with same |
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| CN201810031968.9A CN110027535B (en) | 2018-01-12 | 2018-01-12 | Pedal feel simulator for vehicle and vehicle with same |
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| CN110027535B true CN110027535B (en) | 2021-09-03 |
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| CN110329227B (en) * | 2019-08-09 | 2024-02-09 | 上海拿森汽车电子有限公司 | A pedal simulator, electric booster and vehicle |
| KR102771521B1 (en) * | 2020-08-12 | 2025-02-21 | 현대자동차주식회사 | Foldable brake pedal apparatus for autonomous driving vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4774600B2 (en) * | 2001-01-23 | 2011-09-14 | 株式会社アドヴィックス | Hydraulic pressure control device and vehicle braking device using the same |
| US7367187B2 (en) * | 2005-06-30 | 2008-05-06 | Hitachi, Ltd. | Electrically actuated brake booster |
| US8226175B2 (en) * | 2007-08-02 | 2012-07-24 | Continental Teves Ag & Co. Ohg | Brake system of the brake-by-wire type |
| JP5320377B2 (en) * | 2010-12-08 | 2013-10-23 | 本田技研工業株式会社 | Hydraulic modulator |
| US8850810B2 (en) * | 2011-03-11 | 2014-10-07 | Honda Motor Co., Ltd. | Vehicular hydraulic-pressure-generation device and vehicular braking-force generation device |
| KR20130066375A (en) * | 2011-12-12 | 2013-06-20 | 현대모비스 주식회사 | Pedal simulator of electro-mechanical brake in vehicle |
| JP2014046857A (en) * | 2012-08-31 | 2014-03-17 | Hitachi Automotive Systems Ltd | Electric booster |
| KR20140044712A (en) * | 2012-10-05 | 2014-04-15 | 현대모비스 주식회사 | Brake for vehicle |
| CN203766733U (en) * | 2014-01-28 | 2014-08-13 | 同济大学 | Pedal feeling simulator with combined type springs |
| CN203996204U (en) * | 2014-06-10 | 2014-12-10 | 徐刚 | Master cylinder automatic force booster mechanism |
| CN204978611U (en) * | 2015-02-11 | 2016-01-20 | 同济大学 | Double -piston passive form footboard sensation simulator |
| JP6405299B2 (en) * | 2015-12-24 | 2018-10-17 | ヴィオニア日信ブレーキシステムジャパン株式会社 | Hydraulic pressure generator |
| CN205836794U (en) * | 2016-06-29 | 2016-12-28 | 浙江科力车辆控制系统有限公司 | Electronic control main valve |
| CN106427967B (en) * | 2016-11-25 | 2023-07-14 | 清华大学 | A fully mechanically decoupled brake-by-wire system for automobiles |
| CN107139902B (en) * | 2017-04-07 | 2019-08-27 | 江苏理工学院 | An adjustable pedal feeling simulator and its automobile brake pedal mechanism |
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