CN111645647A - Brake pedal feel simulator and automobile - Google Patents
Brake pedal feel simulator and automobile Download PDFInfo
- Publication number
- CN111645647A CN111645647A CN202010266756.6A CN202010266756A CN111645647A CN 111645647 A CN111645647 A CN 111645647A CN 202010266756 A CN202010266756 A CN 202010266756A CN 111645647 A CN111645647 A CN 111645647A
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- Prior art keywords
- brake pedal
- hole
- restoring
- propulsion
- piston body
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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
- B60T7/06—Disposition of pedal
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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
- B60T8/4086—Systems with stroke simulating devices for driver input the stroke simulating device being connected to, or integrated in the driver input device
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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)
Abstract
The invention discloses a brake pedal feel simulator and an automobile, wherein the brake pedal feel simulator comprises a propulsion damping assembly and a return damping assembly, so that when a brake pedal is in a stressed state, the propulsion damping assembly deforms under the pressure action of oil, the flow rate of the oil flowing from a propulsion through hole to a first chamber in a second chamber can be reduced, and the elasticity of a return spring and the damping force of the propulsion damping assembly simultaneously prevent a push rod from propelling towards an inner cavity of a cylinder body; when the brake pedal is in a non-stressed state, the return damping assembly deforms under the pressure action of oil to slow down the flow speed of the oil flowing from the propulsion through hole to the second chamber in the first chamber, and the damping force generated by the return damping assembly limits the push rod to quickly return under the elastic force action of the return spring.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a brake pedal feeling simulator and an automobile.
Background
The automobile is taken as a convenient vehicle and is integrated into the daily life of people, at present, China automobile keeps the front of the world and has a large market space, and the braking performance of the automobile is one of the important performances of the automobile and directly influences the driving safety of the automobile. The hydraulic brake system of a conventional automobile mainly includes a pedal mechanism, a vacuum booster, a master cylinder, a hydraulic modulator, a brake line, and a brake. The driver steps on the brake pedal, overcomes the gap between the mechanisms, pushes the piston of the brake main cylinder to move under the boosting action of the vacuum booster, builds pipeline pressure, increases oil pressure to push the brake wheel cylinder, and the brake generates brake torque to decelerate the vehicle under the interaction of the tire and the road surface. In the process, a pedal displacement and a pedal force signal which are fed back by a driver through stepping on a brake pedal and a plurality of factors such as vehicle brake deceleration sensed by the body, auditory brake noise, visual vehicle deceleration and the like form brake feeling, the brake feeling is a comprehensive feeling on the body sense of the driver under the condition of vehicle braking, and the feedback action of the pedal mechanism to the driver by the brake pedal feeling is part of the brake feeling, and the relationship between the brake deceleration and the pedal displacement and the brake deceleration sensed by the driver form the pedal characteristic formed by the relationship between the pedal force and the pedal displacement.
In the braking process of the vehicle, a person and a vehicle group form a closed-loop control system, and in the system, a driver can actively control the vehicle and must receive feedback information of the vehicle in time so as to make corresponding adjustment. The brake pedal feeling is taken as one of important evaluation indexes of the braking performance by each large host factory, and is also an important aspect of external media and customer evaluation of vehicle satisfaction. With the development of automobile electronic technology, particularly the continuous popularization of new energy automobiles, the vacuum booster is gradually replaced by a decoupling type electric control hydraulic braking system, and the brake-by-wire is absolutely and comprehensively implemented in the future along with the landing of automatic driving. However, in such systems, the direct connection between the brake pedal and the master cylinder is eliminated, and a specific device is required to simulate the feeling of the brake pedal, so that the driver can correctly receive the feedback information of the vehicle and make corresponding adjustment. Mechanical mechanisms designed by elastic elements such as springs are generally used in the market at present for simulation, and although force feedback is realized, damping is lacked, namely the damping is not used for following feet (force feedback is small) or bouncing feet (force feedback is too large), so that the balance is not facilitated, and the feeling requirements of customers are difficult to fit.
Therefore, the brake pedal feel simulator in the prior art has the problem of poor working smoothness.
Disclosure of Invention
The invention aims to solve the problem that the brake pedal feel simulator in the prior art is poor in working stability. Therefore, the brake pedal feeling simulator and the automobile provided by the invention have the advantage of good working stability.
To solve the above problems, an embodiment of the present invention provides a brake pedal feel simulator including: the brake device comprises a brake pedal, a cylinder body, a push rod, a piston assembly and a return spring; the brake pedal is provided with an opening, one end of the push rod penetrates through the opening and is located in the cylinder, the other end of the push rod is rotatably connected to a position, close to the rear end, of the brake pedal, the piston assembly is connected to the one end of the push rod, the outer periphery of the piston assembly is sealed with the inner peripheral wall of the cylinder, an inner cavity of the cylinder is separated into a first cavity close to the opening and a second cavity far away from the opening, the return spring is connected between the other end of the cylinder and the piston assembly, and the first cavity and the second cavity are used for storing oil; the piston assembly includes:
the piston comprises a piston body, wherein a pushing through hole and a restoring through hole are formed in the piston body, and the pushing through hole and the restoring through hole are oppositely and separately arranged;
the propulsion damping assembly is arranged on one side, close to the first chamber, of the piston body, the propulsion damping assembly is arranged corresponding to the propulsion through hole, and one end, away from the propulsion damping assembly, of the propulsion through hole is communicated with the second chamber;
the return damping assembly is arranged on one side, close to the second chamber, of the piston body, and is arranged corresponding to the restoration through hole, and one end, away from the return damping assembly, of the restoration through hole is communicated with the first chamber; the piston body, the propulsion damping assembly and the return damping assembly are coaxially arranged; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the brake pedal is linked with the push rod to push towards the inner cavity of the cylinder body, the push rod drives the piston assembly to move towards a position close to the second chamber, the return spring starts to compress, oil in the second chamber acts on the propulsion damping assembly through the propulsion through hole and flows to the first chamber, the propulsion damping assembly deforms under the pressure of the oil to reduce the flow rate of the oil flowing from the second chamber to the first chamber through the propulsion through hole, and the elastic force of the return spring and the damping force of the propulsion damping assembly simultaneously prevent the push rod from pushing towards the inner cavity of the cylinder body;
work as when brake pedal is in the non-atress state, return spring begins to open, fluid in the first cavity passes through restore the through-hole to be used in on the return damping subassembly and flow to the second cavity, return damping subassembly is in the pressure effect of fluid is out of shape down, in order to slow down the follow first cavity passes through restore the through-hole flow direction the second cavity the velocity of flow of fluid, the damping force restriction that return damping subassembly produced the push rod is in quick return under return spring's the elastic force effect.
By adopting the technical scheme, the brake pedal feel simulator in the embodiment has the advantages that the propulsion damping component and the return damping component are arranged in the piston assembly, so that when the brake pedal is in a stressed state, the propulsion damping component deforms under the pressure action of oil, the flow rate of the oil flowing from the propulsion through hole to the first chamber of the second chamber can be reduced, and the elasticity of the return spring and the damping force of the propulsion damping component simultaneously prevent the push rod from propelling towards the inner cavity of the cylinder body; when the brake pedal is in a non-stressed state, the return damping assembly deforms under the pressure action of oil to slow down the flow speed of the oil flowing from the propulsion through hole to the second chamber of the first chamber, and the damping force generated by the return damping assembly limits the push rod to quickly return under the elastic force action of the return spring. Through the arrangement of the structure, the brake pedal can be stably pushed or returned no matter in a stressed state or an unstressed state, so that the brake pedal feel simulator in the embodiment has the advantage of good working stability.
Further, another embodiment of the present invention provides a brake pedal feel simulator, wherein a plurality of the propulsion through holes are formed in the piston body, the plurality of the propulsion through holes are arranged at intervals along a circumferential direction of the piston body, each propulsion through hole penetrates through the piston body along a length direction of the piston body, and the plurality of the propulsion through holes are arranged on the piston body at positions close to an edge of the piston body;
the piston body is further provided with a plurality of the restoring through holes, the restoring through holes are arranged along the circumferential direction of the piston body at intervals, each restoring through hole penetrates through the piston body along the length direction of the piston body, and the restoring through holes are arranged on the piston body at positions close to the central axis of the piston body.
Further, another embodiment of the present invention provides a brake pedal feel simulator, the propulsion damping assembly including a propulsion liquid passing piece, a propulsion limit washer, and a propulsion tower spring; wherein the content of the first and second substances,
the propelling liquid passing sheet, the propelling limiting gasket and the propelling tower spring are sequentially arranged on one side, close to the first cavity, of the piston body along the axis direction of the push rod from the piston body to the direction away from the piston body, the propelling liquid passing sheet, the propelling tower spring and the propelling limiting gasket are sleeved outside the push rod, and a through hole communicated with the restoring through hole is formed in the propelling liquid passing sheet; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the propelling liquid-passing piece deforms under the pressure of oil liquid flowing through the propelling through hole by taking the edge of the propelling limiting gasket as a fulcrum, the upper end of the propelling through hole is opened, the lower end of the restoring through hole is closed by the return damping assembly, and the oil liquid in the second chamber flows to the first chamber through the propelling through hole;
when the brake pedal is in a non-stressed state, the upper end of the propulsion through hole is closed by the propulsion liquid passing piece, the lower end of the restoration through hole is opened by the return damping assembly, and oil in the first cavity flows to the second cavity from the restoration through hole.
Further, another embodiment of the present invention provides a brake pedal feel simulator, wherein the return damping assembly comprises a return throttle plate, a return valve plate and a return limit washer; wherein the content of the first and second substances,
the restoring throttling sheet, the restoring valve sheet and the restoring limiting gasket are sequentially arranged on one side, close to the second cavity, of the piston body from the piston body to the direction away from the piston body along the axis direction of the push rod, and the restoring throttling sheet, the restoring valve sheet and the restoring limiting gasket are all sleeved outside the push rod; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the lower end of the restoration through hole is closed by the restoration throttling sheet and the restoration valve sheet;
when the brake pedal is in a non-stressed state, the restoring throttle sheet and the restoring valve sheet deform under the pressure action of oil flowing through the restoring through hole by taking the edge of the restoring limiting gasket as a fulcrum, the lower end of the restoring through hole is opened, and the oil in the first cavity flows to the second cavity from the restoring through hole.
Further, another embodiment of the present invention provides a brake pedal feel simulator, the piston assembly further comprising a first support base, a second support base, and an upper spring base; wherein the content of the first and second substances,
the first support base is arranged on one side, away from the propelling limiting gasket, of the propelling tower spring, the second support base is arranged on one side, away from the reset valve plate, of the reset limiting gasket, and the spring upper base is arranged on one side, away from the reset limiting gasket, of the second support base; and the number of the first and second electrodes,
the one end of the push rod penetrates through the first supporting base, the propelling tower spring, the propelling limiting gasket, the propelling liquid passing sheet, the piston body, the restoring throttling sheet, the restoring valve sheet, the restoring limiting gasket, the second supporting base and the spring upper base in sequence.
Further, another embodiment of the present invention provides a brake pedal feel simulator in which the circumferential side of the restoring orifice plate is provided with a plurality of grooves.
Further, another embodiment of the present invention provides a brake pedal feel simulator, wherein a conical spring seat is disposed on an inner wall surface of the other end of the cylinder, and the other end of the return spring is sleeved on the conical spring seat.
Further, another embodiment of the present invention provides a brake pedal feel simulator, the first chamber and the second chamber further storing nitrogen therein.
Further, another embodiment of the present invention provides a brake pedal feel simulator, wherein a peripheral portion of the piston body is provided with a seal ring that seals the peripheral portion of the piston body with an inner wall of the cylinder.
Further, another embodiment of the present invention provides an automobile including the brake pedal feel simulator of the above-described structure.
With the above technical solution, the automobile according to the present embodiment includes the brake pedal feel simulator having the above structure. And the brake pedal feel simulator can enable the brake pedal to be stably pushed or returned no matter the brake pedal is in a stressed state or an unstressed state. Therefore, the brake pedal feel simulator of the automobile adopting the structure in the embodiment can better simulate the boosting effect brought by the real connection of the traditional vacuum booster and the main cylinder.
Additional features and corresponding 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
Fig. 1 is a schematic structural view of a brake pedal feel simulator in embodiment 1 of the invention;
FIG. 2 is a schematic sectional view showing a piston assembly in the brake pedal feel simulator in accordance with embodiment 1 of the invention;
fig. 3 is a schematic diagram showing an exploded structure of a piston assembly in the brake pedal feel simulator in embodiment 1 of the present invention.
Description of reference numerals:
10: a brake pedal feel simulator;
100: a piston assembly;
110: a piston body;
111: pushing the through hole; 112: restoring the through hole; 113: a seal ring;
120: a propulsion damping assembly;
121: pushing the liquid-through sheet; 122: pushing the limit gasket; 123: a propulsion tower spring;
130: a return damping assembly;
131: restoring the throttling sheet; 1310: a groove; 132: restoring the valve plate; 133: restoring the limiting gasket;
140: a first support base;
150: a second support base;
160: a spring upper base;
200: a cylinder body;
210: a first chamber;
220: a second chamber;
230: an opening;
240: a conical spring base;
300: a brake pedal;
400: a push rod;
410: one end;
420: the other end;
500: and a return spring.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to these embodiments. On the contrary, the invention is described in connection with the embodiments for the purpose of covering alternatives or modifications that may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Moreover, some of the specific details have been left out of the description in order to avoid obscuring or obscuring the focus of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
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.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1:
embodiments of the present embodiment provide a brake pedal feel simulator 10, as shown in fig. 1-3, including: a brake pedal 300, a cylinder 200, a push rod 400, a piston assembly 100 and a return spring 500; the one end of the cylinder 200 is provided with an opening 230, one end 410 of the push rod 400 passes through the opening 230 and is located in the cylinder 200, the other end 420 of the push rod 400 is rotatably connected to a position of the brake pedal 300 close to the rear end, the piston assembly 100 is connected to the one end 410 of the push rod 400, the outer periphery of the piston assembly 100 is sealed with the inner peripheral wall of the cylinder 200, the inner cavity of the cylinder 200 is divided into a first cavity 210 close to the opening 230 and a second cavity 220 away from the opening 230, the return spring 500 is connected between the other end of the cylinder 200 and the piston assembly 100, and the first cavity 210 and the second cavity 220 are used for storing oil.
Further, the piston assembly 100 includes: a piston body 110, an advance damping assembly 120, and a return damping assembly 130; wherein, the piston body 110 is provided with a pushing through hole 111 and a restoring through hole 112, and the pushing through hole 111 and the restoring through hole 112 are relatively separated; the propulsion damping assembly 120 is arranged on one side of the piston body 110 close to the first chamber 210, the propulsion damping assembly 120 is arranged corresponding to the propulsion through hole 111, and one end of the propulsion through hole 111, which is far away from the propulsion damping assembly 120, is communicated with the second chamber 220; the return damping assembly 130 is disposed on one side of the piston body 110 close to the second chamber 220, the return damping assembly 130 is disposed corresponding to the restoring through hole 112, and one end of the restoring through hole 112 away from the return damping assembly 130 is communicated with the first chamber 210; the piston body 110, the advance damping assembly 120 and the return damping assembly 130 are coaxially disposed.
Specifically, the brake pedal feel simulator 10 in the present embodiment, during use: when the brake pedal 300 is in a stressed state, the brake pedal 300 is linked with the push rod 400 to push towards the inner cavity of the cylinder body 200, the push rod 400 drives the piston assembly 100 to move towards a position close to the second chamber 220, the return spring 500 starts to compress, oil in the second chamber 220 acts on the push damping component 120 through the push through hole 111 and flows to the first chamber 210, the push damping component 120 deforms under the pressure of the oil to slow down the flow rate of the oil flowing from the second chamber 220 to the first chamber 210 through the push through hole 111, and the elastic force of the return spring 500 and the damping force of the push damping component 120 simultaneously prevent the push rod 400 from pushing towards the inner cavity of the cylinder body 200.
When the brake pedal 300 is in an unstressed state, the return spring 500 begins to expand, oil in the first chamber 210 acts on the return damping assembly 130 through the restoration through hole 112 and flows to the second chamber 220, the return damping assembly 130 deforms under the pressure of the oil to slow down the flow rate of the oil flowing from the first chamber 210 to the second chamber 220 through the restoration through hole 112, and the damping force generated by the return damping assembly 130 limits the push rod 400 to rapidly return under the elastic force of the return spring 500.
More specifically, in the brake pedal feel simulator 10 of the present embodiment, the push damping assembly 120 and the return damping assembly 130 are disposed in the piston assembly 100, so that when the brake pedal 300 is in a stressed state, the push damping assembly 120 deforms under the pressure of the oil, the flow rate of the oil flowing from the push through hole 111 to the first chamber 210 in the second chamber 220 can be reduced, and the elastic force of the return spring 500 and the damping force of the push damping assembly 120 simultaneously prevent the push rod 400 from pushing towards the inner cavity of the cylinder 200; when the brake pedal 300 is in an unstressed state, the return damping assembly 130 deforms under the pressure of the oil to slow down the flow rate of the oil flowing from the first chamber 210 to the second chamber 220 through the push through hole 111, and the damping force generated by the return damping assembly 130 limits the push rod 400 to be quickly returned under the elastic force of the return spring 500. With the arrangement of the structure, the brake pedal 300 can be smoothly pushed or returned no matter the brake pedal 300 is in a stressed state or an unstressed state, so that the brake pedal feel simulator 10 in the embodiment has the advantage of good working stability.
More specifically, in the present embodiment, the forward damping assembly 120 and the return damping assembly 130 are both configured to slow down the flow rate of the oil, so that the brake pedal 300 is more stable when being depressed and returned. The brake pedal feel simulator 10 having such a structure can prevent the brake pedal 300 from bouncing when it is returned, and can allow people to smoothly control the vehicle speed when braking.
It should be noted that the specific structures of the advance damping assembly 120 and the return damping assembly 130 in this embodiment are explained below, and are not described in detail herein.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 2 to 3, a plurality of pushing through holes 111 are provided on the piston body 110, the plurality of pushing through holes 111 are provided at intervals along a circumferential direction of the piston body 110, each pushing through hole 111 penetrates the piston body 110 along a length direction of the piston body 110, and the plurality of pushing through holes 111 are provided on the piston body 110 at a position close to an edge of the piston body 110.
Specifically, in the present embodiment, the piston body 110 is further provided with a plurality of restoring through holes 112, the restoring through holes 112 are arranged at intervals along the circumferential direction of the piston body 110, each restoring through hole 112 penetrates the piston body 110 along the length direction of the piston body 110, and the restoring through holes 112 are arranged on the piston body 110 at positions close to the central axis of the piston body 110.
More specifically, in the present embodiment, the recovery through hole 112 is disposed between the thrust through hole 111 and the central axis of the cylinder 200, and the recovery through hole 112 and the thrust through hole 111 may be respectively provided with 4, 5, or more, and may be specifically set according to actual design and use requirements, which is not limited in the present embodiment.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 2-3, with a propulsion damping assembly 120 including a propulsion vent plate 121, a propulsion limit spacer 122, and a propulsion tower spring 123.
Specifically, in this embodiment, the propelling liquid passing piece 121, the propelling limit gasket 122 and the propelling tower spring 123 are sequentially disposed on one side of the piston body 110 close to the first chamber 210 from the piston body 110 to a direction away from the piston body 110 along the axial direction of the push rod 400, the propelling liquid passing piece 121, the propelling tower spring 123 and the propelling limit gasket 122 are all sleeved outside the push rod 400, and the propelling liquid passing piece 121 is provided with a through hole communicated with the recovery through hole 112.
Specifically, the brake pedal feel simulator 10 in the present embodiment, during use: when the brake pedal 300 is in a stressed state, the propelling liquid-passing piece 121 deforms with the edge of the propelling limiting gasket 122 as a fulcrum under the pressure of the oil liquid flowing through the propelling through hole 111, the upper end of the propelling through hole 111 is opened, the return damping assembly 130 closes the lower end of the restoring through hole 112, and the oil liquid in the second chamber 220 flows to the first chamber 210 through the propelling through hole 111.
When the brake pedal 300 is in an unstressed state, the upper end of the propulsion through hole 111 is closed by the propulsion liquid passing piece 121, the lower end of the restoration through hole 112 is opened by the return damping assembly 130, and the oil in the first chamber 210 flows to the second chamber 220 from the restoration through hole 112.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 2-3, the return damping assembly 130 includes a return orifice plate 131, a return valve plate 132, and a return limit washer 133; wherein the content of the first and second substances,
the restoring orifice plate 131, the restoring valve plate 132 and the restoring limiting shim 133 are sequentially arranged on one side of the piston body 110 close to the second chamber 220 from the piston body 110 to the direction departing from the piston body 110 along the axial direction of the push rod 400, and the restoring orifice plate 131, the restoring valve plate 132 and the restoring limiting shim 133 are all sleeved outside the push rod 400.
Specifically, the brake pedal feel simulator 10 in the present embodiment, during use: when the brake pedal 300 is in a stressed state, the lower end of the restoring through hole 112 is closed by the restoring throttle sheet 131 and the restoring valve sheet 132;
when the brake pedal 300 is in an unstressed state, under the pressure of the oil flowing through the recovery through hole 112, the recovery throttle plate 131 and the recovery valve plate 132 deform around the edge of the recovery limiting gasket 133 as a fulcrum and open the lower end of the recovery through hole 112, and the oil in the first chamber 210 flows from the recovery through hole 112 to the second chamber 220.
More specifically, in the present embodiment, the impelling liquid passing piece 121, the impelling tower spring 123, the impelling limit spacer 122, the restoring throttle piece 131, and the restoring valve piece 132 should be provided with an elastically deformable structure with the restoring limit spacer 133, and specific materials thereof may be set according to actual design and usage requirements, which is not limited in the present embodiment.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 2-3, the piston assembly 100 further comprising a first support base 140, a second support base 150, and an upper spring base 160.
Specifically, in the present embodiment, the first supporting base 140 is disposed on a side of the pushing tower spring 123 away from the pushing limit pad 122, the second supporting base 150 is disposed on a side of the restoring limit pad 133 away from the restoring valve plate 132, and the spring upper base 160 is disposed on a side of the second supporting base 150 away from the restoring limit pad 133.
More specifically, in the present embodiment, one end 410 of the plunger 400 sequentially penetrates the first support base 140, the push tower spring 123, the push limit spacer 122, the push fluid-feed piece 121, the piston body 110, the return orifice piece 131, the return valve piece 132, the return limit spacer 133, the second support base 150, and the sprung base 160.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 3, in which a plurality of grooves 1310 are provided on the circumferential side of the restoring orifice 131.
More specifically, in the present embodiment, the width and the number of the grooves 1310 can be set according to actual requirements, which is not limited in the present embodiment. For example, 10, 20, etc. grooves 1310 may be provided, and the width of the grooves 1310 may be provided by 5mm, 10mm, etc.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, as shown in fig. 1, a conical spring seat 240 is disposed on an inner wall surface of the other end of the cylinder 200, and the other end of the return spring 500 is sleeved on the conical spring seat 240.
Specifically, the conical spring base 240 enables the spring base to be connected in a sleeved manner, so that the assembly is more convenient.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, wherein the first chamber 210 and the second chamber 220 are also used for storing nitrogen gas, so that oil can flow in the two chambers.
Further, another embodiment of the present embodiment provides a brake pedal feel simulator 10, in which a sealing ring 113 is provided on a peripheral portion of the piston body 110, and the sealing ring 113 seals the peripheral portion of the piston body 110 with an inner wall of the cylinder 200.
Specifically, in the present embodiment, the seal ring 113 may be a seal ring made of various materials, such as a rubber seal ring and a plastic seal ring, which are commonly used by those skilled in the art, and may be specifically set according to actual design and use requirements, which are not limited in the present embodiment.
In the present embodiment, as shown in fig. 1 to 3, during the use process, when the brake pedal 300 is in a stressed state, the push rod 400 pushes the return spring 500, and the oil second chamber 220 flows to the first chamber 210, during the process, the oil flows from the pushing through hole 111 of the piston body 110, the hydraulic pressure deforms the pushing liquid passing piece 121, and the pushing liquid passing piece 121 deforms with the edge of the pushing limit gasket 122 as a fulcrum due to the limit of the pushing limit gasket 122 and the pressing of the pushing tower spring 123, and the linkage pushing tower spring 123 deforms synchronously to generate an additional damping force. The piston seal ring 11320a functions to block oil in the chambers on both sides of the piston, and improves the sliding property.
It should be understood that when the brake pedal 300 is stepped on slowly, the damping force is mainly generated by the deformation of the propulsion liquid passing piece 121; when the stepping speed is high, the propelling liquid through sheet 121 and the propelling tower spring 123 deform synchronously to provide higher damping force; the faster the stepping is, the more the valve plate opened by the oil is deformed, and the more the damping force is increased.
When the brake pedal 300 is in an unstressed state, the piston assembly 100 moves to the initial position by the return elastic force of the return spring 500, and simultaneously, the oil flows back to the second chamber 220 from the first chamber 210, and the oil pushes against the restoring throttle plate 131 and the restoring valve plate 132, and at this time, the restoring throttle plate 131 and the restoring valve plate 132 generate a retarding damping force to perform a buffering and shock absorption function. The restoring throttle plate 131 and the restoring valve plate 132 are deformed around the outer edge of the limit gasket as a fulcrum due to the limit of the limit gasket, and provide a damping force. Wherein, when returning at low speed, the deformation of the recovery throttle sheet 131 is mainly used; when returning fast, restore throttle plate 131 and restore valve plate 132 and warp simultaneously, provide higher damping force, prevent to play the foot.
Through the arrangement of the brake pedal feel simulator 10 in the structure, when the brake pedal 300 is in a stressed state, the propulsion damping assembly 120 deforms under the pressure of the oil, so that the flow rate of the oil flowing from the propulsion through hole 111 to the first chamber 210 in the second chamber 220 can be reduced, and the elastic force of the return spring 500 and the damping force of the propulsion damping assembly 120 simultaneously prevent the push rod 400 from propelling towards the inner cavity of the cylinder 200; when the brake pedal 300 is in an unstressed state, the return damping assembly 130 deforms under the pressure of the oil to slow down the flow rate of the oil flowing from the first chamber 210 to the second chamber 220 through the push through hole 111, and the damping force generated by the return damping assembly 130 limits the push rod 400 to be quickly returned under the elastic force of the return spring 500. With the arrangement of the structure, the brake pedal 300 can be smoothly pushed or returned no matter the brake pedal 300 is in a stressed state or an unstressed state, so that the brake pedal feel simulator 10 in the embodiment has the advantage of good working stability.
Example 2:
further, the present embodiment provides an automobile including the brake pedal feel simulator 10 of embodiment 1.
Specifically, referring to fig. 1 to 3 in example 1, since the automobile in the present embodiment includes the brake pedal feel simulator 10 in example 1. The brake pedal feel simulator 10 includes a push damping assembly 120 and a return damping assembly 130, so that when the brake pedal 300 is in a stressed state, the push damping assembly 120 deforms under the pressure of oil, the flow rate of the oil flowing from the push through hole 111 to the first chamber 210 in the second chamber 220 can be reduced, and the elastic force of the return spring 500 and the damping force of the push damping assembly 120 simultaneously prevent the push rod 400 from pushing towards the inner cavity of the cylinder 200; when the brake pedal 300 is in an unstressed state, the return damping assembly 130 deforms under the pressure of the oil to slow down the flow rate of the oil flowing from the first chamber 210 to the second chamber 220 through the push through hole 111, and the damping force generated by the return damping assembly 130 limits the push rod 400 to be quickly returned under the elastic force of the return spring 500. Through the arrangement of the structure, no matter the brake pedal 300 is in a stressed state or an unstressed state, the brake pedal 300 can be smoothly pushed or returned, so that the brake pedal feel simulator 10 of the automobile adopting the structure in the embodiment can better simulate the boosting effect brought by the real connection of the traditional vacuum booster and the main cylinder.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A brake pedal feel simulator comprising: the brake device comprises a brake pedal, a cylinder body, a push rod, a piston assembly and a return spring; the brake pedal is provided with an opening, one end of the push rod penetrates through the opening and is located in the cylinder, the other end of the push rod is rotatably connected to a position, close to the rear end, of the brake pedal, the piston assembly is connected to the one end of the push rod, the outer periphery of the piston assembly is sealed with the inner peripheral wall of the cylinder, an inner cavity of the cylinder is separated into a first cavity close to the opening and a second cavity far away from the opening, the return spring is connected between the other end of the cylinder and the piston assembly, and the first cavity and the second cavity are used for storing oil; characterized in that, the piston assembly includes:
the piston comprises a piston body, wherein a pushing through hole and a restoring through hole are formed in the piston body, and the pushing through hole and the restoring through hole are oppositely and separately arranged;
the propulsion damping assembly is arranged on one side, close to the first chamber, of the piston body, the propulsion damping assembly is arranged corresponding to the propulsion through hole, and one end, away from the propulsion damping assembly, of the propulsion through hole is communicated with the second chamber;
the return damping assembly is arranged on one side, close to the second chamber, of the piston body, and is arranged corresponding to the restoration through hole, and one end, away from the return damping assembly, of the restoration through hole is communicated with the first chamber; the piston body, the propulsion damping assembly and the return damping assembly are coaxially arranged; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the brake pedal is linked with the push rod to push towards the inner cavity of the cylinder body, the push rod drives the piston assembly to move towards a position close to the second chamber, the return spring starts to compress, oil in the second chamber acts on the propulsion damping assembly through the propulsion through hole and flows to the first chamber, the propulsion damping assembly deforms under the pressure of the oil to reduce the flow rate of the oil flowing from the second chamber to the first chamber through the propulsion through hole, and the elastic force of the return spring and the damping force of the propulsion damping assembly simultaneously prevent the push rod from pushing towards the inner cavity of the cylinder body;
work as when brake pedal is in the non-atress state, return spring begins to open, fluid in the first cavity passes through restore the through-hole to be used in on the return damping subassembly and flow to the second cavity, return damping subassembly is in the pressure effect of fluid is out of shape down, in order to slow down the follow first cavity passes through restore the through-hole flow direction the second cavity the velocity of flow of fluid, the damping force restriction that return damping subassembly produced the push rod is in quick return under return spring's the elastic force effect.
2. The brake pedal feel simulator of claim 1 wherein said piston body is provided with a plurality of said push through holes spaced circumferentially thereof, each of said push through holes extending through said piston body along a length thereof, said plurality of said push through holes being provided on said piston body adjacent an edge thereof;
the piston body is further provided with a plurality of the restoring through holes, the restoring through holes are arranged along the circumferential direction of the piston body at intervals, each restoring through hole penetrates through the piston body along the length direction of the piston body, and the restoring through holes are arranged on the piston body at positions close to the central axis of the piston body.
3. The brake pedal feel simulator of claim 2 wherein said propulsion damping assembly includes a propulsion diaphragm, a propulsion limit pad, and a propulsion tower spring; wherein the content of the first and second substances,
the propelling liquid passing sheet, the propelling limiting gasket and the propelling tower spring are sequentially arranged on one side, close to the first cavity, of the piston body along the axis direction of the push rod from the piston body to the direction away from the piston body, the propelling liquid passing sheet, the propelling tower spring and the propelling limiting gasket are sleeved outside the push rod, and a through hole communicated with the restoring through hole is formed in the propelling liquid passing sheet; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the propelling liquid-passing piece deforms under the pressure of oil liquid flowing through the propelling through hole by taking the edge of the propelling limiting gasket as a fulcrum, the upper end of the propelling through hole is opened, the lower end of the restoring through hole is closed by the return damping assembly, and the oil liquid in the second chamber flows to the first chamber through the propelling through hole;
when the brake pedal is in a non-stressed state, the upper end of the propulsion through hole is closed by the propulsion liquid passing piece, the lower end of the restoration through hole is opened by the return damping assembly, and oil in the first cavity flows to the second cavity from the restoration through hole.
4. The brake pedal feel simulator of claim 3 wherein said return damping assembly comprises a return orifice plate, a return valve plate and a return limit shim; wherein the content of the first and second substances,
the restoring throttling sheet, the restoring valve sheet and the restoring limiting gasket are sequentially arranged on one side, close to the second cavity, of the piston body from the piston body to the direction away from the piston body along the axis direction of the push rod, and the restoring throttling sheet, the restoring valve sheet and the restoring limiting gasket are all sleeved outside the push rod; wherein the content of the first and second substances,
when the brake pedal is in a stressed state, the lower end of the restoration through hole is closed by the restoration throttling sheet and the restoration valve sheet;
when the brake pedal is in a non-stressed state, the restoring throttle sheet and the restoring valve sheet deform under the pressure action of oil flowing through the restoring through hole by taking the edge of the restoring limiting gasket as a fulcrum, the lower end of the restoring through hole is opened, and the oil in the first cavity flows to the second cavity from the restoring through hole.
5. The brake pedal feel simulator of claim 4 wherein said piston assembly further comprises a first support base, a second support base and an upper spring base; wherein the content of the first and second substances,
the first support base is arranged on one side, away from the propelling limiting gasket, of the propelling tower spring, the second support base is arranged on one side, away from the reset valve plate, of the reset limiting gasket, and the spring upper base is arranged on one side, away from the reset limiting gasket, of the second support base; and the number of the first and second electrodes,
the one end of the push rod penetrates through the first supporting base, the propelling tower spring, the propelling limiting gasket, the propelling liquid passing sheet, the piston body, the restoring throttling sheet, the restoring valve sheet, the restoring limiting gasket, the second supporting base and the spring upper base in sequence.
6. The brake pedal feel simulator of claim 5 wherein said peripheral side of said reset orifice plate is provided with a plurality of notches.
7. The brake pedal feel simulator of claim 5, wherein a conical spring seat is provided on an inner wall surface of the other end of the cylinder, and the other end of the return spring is fitted over the conical spring seat.
8. The brake pedal feel simulator of claim 5 wherein said first and second chambers are further adapted to store nitrogen therein.
9. The brake pedal feel simulator of claim 5 wherein the peripheral portion of said piston body is provided with a seal that seals the peripheral portion of said piston body to the inner wall of said cylinder.
10. An automobile comprising the brake pedal feel simulator of any one of claims 1 to 9.
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| CN202010266756.6A CN111645647B (en) | 2020-04-07 | 2020-04-07 | Brake pedal feel simulator and automobile |
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| CN202010266756.6A CN111645647B (en) | 2020-04-07 | 2020-04-07 | Brake pedal feel simulator and automobile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332809A (en) * | 2007-06-27 | 2008-12-31 | 周成富 | Control method and device for preventing wrongly stepping on the vehicle throttle |
| CN101566211A (en) * | 2009-06-01 | 2009-10-28 | 奇瑞汽车股份有限公司 | Damping regulator and electronic brake pedal sense simulator |
| CN101628577A (en) * | 2008-07-16 | 2010-01-20 | 现代摩比斯株式会社 | Hysteresis characterizing typed electro pedal device |
| CN103223934A (en) * | 2012-01-25 | 2013-07-31 | 株式会社万都 | Pre-fill system to improve brake feel and method of increasing initial flux using the same |
| CN203766732U (en) * | 2014-01-28 | 2014-08-13 | 同济大学 | Passive type pedal feeling simulation device |
-
2020
- 2020-04-07 CN CN202010266756.6A patent/CN111645647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332809A (en) * | 2007-06-27 | 2008-12-31 | 周成富 | Control method and device for preventing wrongly stepping on the vehicle throttle |
| CN101628577A (en) * | 2008-07-16 | 2010-01-20 | 现代摩比斯株式会社 | Hysteresis characterizing typed electro pedal device |
| CN101566211A (en) * | 2009-06-01 | 2009-10-28 | 奇瑞汽车股份有限公司 | Damping regulator and electronic brake pedal sense simulator |
| CN103223934A (en) * | 2012-01-25 | 2013-07-31 | 株式会社万都 | Pre-fill system to improve brake feel and method of increasing initial flux using the same |
| CN203766732U (en) * | 2014-01-28 | 2014-08-13 | 同济大学 | Passive type pedal feeling simulation device |
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