CN219883834U - Pedal feel simulation device and brake system - Google Patents
Pedal feel simulation device and brake system Download PDFInfo
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- CN219883834U CN219883834U CN202320259556.7U CN202320259556U CN219883834U CN 219883834 U CN219883834 U CN 219883834U CN 202320259556 U CN202320259556 U CN 202320259556U CN 219883834 U CN219883834 U CN 219883834U
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- cavity
- spring seat
- piston
- spring
- axially
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- 238000004088 simulation Methods 0.000 title abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The utility model discloses a pedal feeling simulation device and a braking system, comprising: the sealing device comprises a cavity, a sealing component, a piston and an elastic axial movement mechanism, wherein the sealing component is arranged at the left end of the cavity and forms a sealing structure with the cavity wall of the cavity, the piston is arranged in the right end area of the cavity, the piston and the cavity wall of the cavity form a hydraulic cavity, the inner space of which is changed due to the fact that the piston is driven by hydraulic pressure to move axially, and the elastic axial movement mechanism axially connects the piston with the sealing component so as to feed back different force values at different stages due to the axial movement of the piston. The utility model solves the problems that the pedal feeling experience provided by the existing pedal feeling simulation device for the driver is poor and the requirements of the driver cannot be met.
Description
Technical Field
The utility model belongs to the field of automobile braking, and particularly relates to a pedal feeling simulation device and a braking system.
Background
With the rapid development of intelligent driving in new energy automobiles, the traditional vacuum booster braking system cannot meet the market demand, and more electronic hydraulic products are applied to the automobiles, wherein the braking process of the products is to step on a pedal by a driver, a pedal displacement sensor outputs a signal to an ECU, and the control system brakes, so that the driver does not directly apply force to brake.
However, at present, the pedal feel simulation device provides poor pedal feel experience for the driver, and cannot meet the requirements of the driver.
There is therefore a need for an additional simulated pedal feel device in a brake system that provides a pedal feel to the driver.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the pedal feeling simulation device and the brake system, and the elastic axial movement mechanism feeds back different force values at different stages due to the axial movement of the piston, so that the problems that the pedal feeling simulation device at present provides a poor pedal feeling experience for a driver and cannot meet the requirements of the driver are solved.
The utility model aims at realizing the following technical scheme:
in a first aspect, there is provided a simulated pedal feel apparatus comprising:
a cavity;
the plugging component is arranged at the left end of the cavity and forms a sealing structure with the cavity wall of the cavity;
the piston is arranged in the right end area of the cavity, and the piston and the cavity wall of the cavity form a hydraulic cavity with an inner space which is changed due to the fact that the piston is driven by hydraulic pressure to axially move; and
and the elastic axial movement mechanism is used for axially connecting the piston with the plugging assembly so as to feed back different force values at different stages due to the axial movement of the piston.
In certain embodiments, the resilient axial-motion mechanism comprises:
the first spring seat is axially movably arranged in the cavity and is spaced from the plugging assembly;
the second spring seat is arranged on the piston and forms a structure which slides mutually and axially with the first spring seat;
a first spring axially disposed between the first spring seat and the second spring seat;
the second spring is axially arranged between the first spring seat and the plugging assembly;
the first rubber spring is arranged on the first spring seat and is spaced from the second spring seat, and the first rubber spring is positioned on the axial sliding track of the second spring seat; and
the second rubber spring is arranged on the plugging assembly and on the axial movement track of the first spring seat.
In certain embodiments, the occlusion mechanism comprises:
a retainer ring fixedly arranged at the left end part in the cavity;
and the end cover is arranged in the cavity, is contacted with the check ring and is positioned on the right side of the check ring, and is clamped by the check ring and the inner wall of the cavity together to be kept at a preset position.
In certain embodiments, further comprising: and the sealing ring is arranged between the outer peripheral wall of the piston and the inner wall of the cavity.
In some embodiments, the cavity is provided with a liquid inlet hole for introducing the oil discharged by the brake master cylinder into the hydraulic cavity.
In certain embodiments, the first spring seat comprises:
the spring seat body is internally provided with an opening containing cavity;
the matching column is axially arranged in the containing cavity of the spring seat body, the head of the matching column extends into the second spring seat, the head is provided with a radially protruding limiting part 50121, and the matching column is in sliding fit with the second spring seat.
In a second aspect, there is provided a brake system comprising: the pedal feeling simulation device.
The beneficial effects of the utility model are as follows: according to the utility model, the piston is matched with the elastic axial movement mechanism, the elastic axial movement mechanism feeds back different force values at different stages due to the axial movement of the piston, and the feedback force values at multiple stages can better fit the braking feeling of the traditional vacuum booster, so that the high-quality pedal feeling is brought to a driver, and the problem that the pedal feeling experience provided by the conventional pedal feeling simulation device for the driver is poor and the requirement of the driver cannot be met is solved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a simulated pedal feel apparatus provided in an exemplary embodiment;
FIG. 2 is a schematic view of a cavity provided in an exemplary embodiment;
FIG. 3 is a diagram illustrating an exemplary embodiment of an operating state of a simulated pedal feel apparatus during a first stage compression stage;
FIG. 4 is a diagram illustrating an exemplary embodiment of an operating state of a simulated pedal feel apparatus during a second stage of compression;
FIG. 5 is a diagram illustrating an operational state of a simulated pedal feel apparatus in a third stage compression stage provided in an exemplary embodiment;
FIG. 6 is a diagram of an exemplary embodiment of an operating state of the simulated pedal feel apparatus in a fourth stage compression stage.
Detailed Description
For a better understanding of the technical solution of the present utility model, the following detailed description of the embodiments of the present utility model refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, in one embodiment, a simulated pedal feel apparatus is provided for use in a braking system, particularly an automotive braking system, the simulated pedal feel apparatus comprising: the chamber 10, the closure assembly 20, the piston 30 and the resilient axial-motion mechanism 50.
As shown in fig. 2, the right end in the cavity 10 has a first hole 102, the first hole 102 is communicated with a liquid inlet hole 101 (hereinafter shown), the first hole 102 of the cavity 10 has a right hole section 1021, a left hole section 1022 and a piston contact hole section 1023 between the right hole section 1021 and the left hole section 1022, wherein the hole diameter of the right hole section 1021 is larger than that of the piston contact hole section 1023, the piston 30 is contacted with the inner wall of the piston contact hole section 1023 and can move axially, namely transversely, in the piston contact hole section 1023, a second hole 103 which is connected with the first hole 102 and is positioned at the left side of the first hole 102 is arranged in the cavity 10, and the hole diameter of the first hole 102 of the cavity 10 is smaller than that of the second hole 103. In one embodiment, the piston contact hole section 1023 has a sealing groove 104 with a rectangular cross section, and a sealing ring 60 is provided in the sealing groove 104, and the sealing ring 60 is disposed between the outer peripheral wall of the piston 30 and the piston contact hole section 1023 in the inner wall of the cavity 10, so as to enhance the sealing effect between the piston 30 and the inner wall of the cavity 10. In one embodiment, the seal 60 is a Y-shaped seal.
As shown in fig. 1, the plugging assembly 20 is disposed at the left end of the cavity 10 and forms a sealing structure with the cavity wall of the cavity 10; in one embodiment, the occlusion mechanism comprises: the retainer ring 201 and the end cover 202 are arranged at the left end of the inner cavity wall of the cavity 10, the ring groove 105 is arranged at the left end of the inner cavity wall of the cavity 10, the protruding limiting part is arranged at the right side of the ring groove 105, and the retainer ring 201 is fixedly arranged in the ring groove 105 at the left end part of the inner cavity 10. The end cap 202 includes a cover body 2021 having a substantially plate shape, a groove portion 2022 protruding rightward from a right side surface of the cover body 2021, and a notch of the groove portion 2022 at a right end. The cover body 2021 of the end cover 202 is disposed in the cavity 10 in contact with the retainer ring 201 and located on the right of the retainer ring 201, specifically, the retainer ring 201 is disposed between the retainer ring 201 and the stopper portion of the cavity 10, and the cover body 2021 of the end cover 202 is held in a predetermined position under the common clamping of the retainer ring 201 and the stopper portion in the inner wall of the cavity 10.
The piston 30 has a cavity inside and a protruding protrusion on the right side wall, the piston 30 is disposed at the right end area inside the cavity 10, the outer diameter of the piston 30 is smaller than the aperture of the right hole section 1021 of the cavity 10, and thus a hydraulic cavity 40 is formed, that is, the hydraulic cavity 40 is formed by the outer wall of the piston 30 and the cavity wall of the right hole section 1021 inside the cavity 10, and the internal space of the hydraulic cavity 40 is changed due to the axial movement of the piston 30 driven by hydraulic pressure. In one embodiment, the chamber 10 has a fluid inlet 101 for introducing fluid from the brake master cylinder into the hydraulic chamber 40, the fluid inlet 101 having a transverse bore section and a vertical bore section, the transverse bore section being connected to the right side of the hydraulic chamber 40 and the vertical bore section receiving fluid from the brake master cylinder.
The elastic axial movement mechanism 50 axially connects the piston 30 with the closure assembly 20 to feed back different force values at different stages due to the axial movement of the piston 30.
As shown in fig. 1, in one embodiment, the resilient axial-motion mechanism 50 includes: a first spring seat 501, a second spring seat 502, a first spring 503, a second spring 504, a first rubber spring 505, and a second rubber spring 506.
The first spring seat 501 is axially movably arranged in the cavity 10 and is axially spaced from the plugging assembly 20, the second spring seat 502 is arranged on the piston 30 and forms a mutually axially sliding structure with the first spring seat 501, the first spring 503 is axially arranged between the first spring seat 501 and the second spring seat 502, the second spring 504 is axially arranged between the first spring seat 501 and the plugging assembly 20, the first rubber spring 505 is arranged on the first spring seat 501 and is spaced from the second spring seat 502, the first rubber spring 505 is arranged on an axially sliding track of the second spring seat 502, and the second rubber spring 506 is arranged on the plugging assembly 20 and is arranged on an axially moving track of the first spring seat 501.
As shown in fig. 1, in an embodiment, the first spring seat 501 includes: spring seat body 5011 and cooperation post 5012, spring seat body 5011 inside has the opening appearance chamber, specifically, spring seat body 5011 is the tube-shape and the left end is sealed and the right-hand member is open to spring seat body 5011 has radial convex seat limit portion 50111 in the right-hand member, cooperation post 5012 sets up in spring seat body 5011's appearance intracavity axially, and cooperation post 5012's head stretches into in the second spring seat 502 and the head has radial convex spacing portion 50121, cooperation post 5012 and second spring seat 502 sliding fit.
The right end of the second spring seat 502 is connected with the piston 30, and the left end is provided with a slide hole 5021, the slide hole 5021 of the second spring seat 502 is shaped and sized to be matched with the fitting post 5012, and the limiting portion 50121 is used for preventing the fitting post 5012 from sliding out of the slide hole 5021 of the second spring seat 502. The left end portion of the second spring seat 502 extends into the interior cavity of the spring seat body 5011 and is spaced from the interior left side wall of the spring seat body 5011.
The first spring 503 is sleeved on the second spring seat 502, the right end of the first spring is connected to the outer peripheral wall of the second spring seat 502, and the left end of the first spring is connected to the left side wall in the spring seat body 5011.
The second spring 504 is sleeved on the outer wall of the spring seat body 5011 and the groove portion 2022 of the end cover 202, and the right end thereof is connected to the seat side portion 50111 of the spring seat body 5011 and the left end thereof is connected to the cover body 2021 of the end cover 202.
The first rubber spring 505 is disposed on the left side wall in the spring seat body 5011, and the first rubber spring 505 is located inside the first spring 503 and is passed through by the fitting post 5012.
The second rubber spring 506 is disposed within the groove portion 2022 of the end cap 202 and the right end extends axially to a notch protruding from the groove portion 2022.
As shown in fig. 3, in the first stage compression stage, when the driver presses the brake pedal, the oil discharged from the master cylinder enters the hydraulic chamber 40 through the inlet port 101, the piston 30 moves leftward, and pushes the second spring seat 502 to compress the first spring 503 first, and when the second spring seat 502 contacts the first rubber spring 505, the second stage compression stage is ready to be entered.
As shown in fig. 4, in the second stage of compression, the first rubber spring 505 is compressed as the piston 30 moves from a to A1; when the second spring seat 502 contacts the first spring seat 501, the first rubber spring 505 and the first spring 503 are compressed to the limit, and the first rubber spring 505 has a force superposition transition function, so that the change of different force values can be better engaged. At this point, the third stage of compression is ready to be entered.
As shown in fig. 5, in the third stage of compression, the second spring 504 compresses to generate force feedback to the pedal as the piston 30 moves from A1 to A2.
As shown in fig. 5, in the fourth stage of compression, when the piston 30 moves from A2 to A3, the second spring 504 is further compressed, and then the first spring seat 501 contacts and compresses the second rubber spring 506, so as to generate an elastic force feedback, and eliminate the rigid pedal feel when the pedal is stepped on to the full stroke, thereby providing a very good pedal feel to the driver.
According to the pedal feeling simulation device, the piston 30 is matched with the elastic axial movement mechanism 50, the elastic axial movement mechanism 50 feeds back different force values at different stages due to axial movement of the piston 30, and the feedback force values at multiple stages can better fit the feeling of a traditional vacuum booster during braking, so that a driver is provided with a high-quality pedal feeling, and the problem that the pedal feeling simulation device provided by the current pedal feeling simulation device for the driver is poor in pedal feeling experience and cannot meet the requirement of the driver is solved.
The foregoing description of the preferred embodiment(s) is (are) merely intended to illustrate the embodiment(s) of the present utility model, and it is not intended to limit the embodiment(s) of the present utility model to the particular embodiment(s) described.
Claims (6)
1. A simulated pedal feel apparatus comprising:
a cavity;
the plugging component is arranged at the left end of the cavity and forms a sealing structure with the cavity wall of the cavity;
the piston is arranged in the right end area of the cavity, and the piston and the cavity wall of the cavity form a hydraulic cavity with an inner space which is changed due to the fact that the piston is driven by hydraulic pressure to axially move; and
the elastic axial movement mechanism axially connects the piston with the plugging assembly so as to feed back different force values at different stages due to the axial movement of the piston;
the elastic axial movement mechanism comprises:
the first spring seat is axially movably arranged in the cavity and is spaced from the plugging assembly;
the second spring seat is arranged on the piston and forms a structure which slides mutually and axially with the first spring seat;
a first spring axially disposed between the first spring seat and the second spring seat;
the second spring is axially arranged between the first spring seat and the plugging assembly;
the first rubber spring is arranged on the first spring seat and is spaced from the second spring seat, and the first rubber spring is positioned on the axial sliding track of the second spring seat; and
the second rubber spring is arranged on the plugging assembly and on the axial movement track of the first spring seat.
2. The simulated pedal feel device of claim 1 wherein said occlusion assembly comprises:
a retainer ring fixedly arranged at the left end part in the cavity;
and the end cover is arranged in the cavity, is contacted with the check ring and is positioned on the right side of the check ring, and is clamped by the check ring and the inner wall of the cavity together to be kept at a preset position.
3. The simulated pedal feel device of claim 1 further comprising: and the sealing ring is arranged between the outer peripheral wall of the piston and the inner wall of the cavity.
4. The simulated pedal feel device of claim 1 wherein: the cavity is provided with a liquid inlet hole for introducing the oil discharged by the brake master cylinder into the hydraulic cavity.
5. The simulated pedal feel device of claim 1 wherein said first spring seat comprises:
the spring seat body is internally provided with an opening containing cavity;
the matching column is axially arranged in the containing cavity of the spring seat body, the head of the matching column extends into the second spring seat, the head is provided with a radially protruding limiting part, and the matching column is in sliding fit with the second spring seat.
6. A braking system, comprising: a simulated pedal feel apparatus as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259556.7U CN219883834U (en) | 2023-02-20 | 2023-02-20 | Pedal feel simulation device and brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320259556.7U CN219883834U (en) | 2023-02-20 | 2023-02-20 | Pedal feel simulation device and brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219883834U true CN219883834U (en) | 2023-10-24 |
Family
ID=88405175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320259556.7U Active CN219883834U (en) | 2023-02-20 | 2023-02-20 | Pedal feel simulation device and brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219883834U (en) |
-
2023
- 2023-02-20 CN CN202320259556.7U patent/CN219883834U/en active Active
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| GR01 | Patent grant |