Pedal feeling simulator and brake-by-wire system

Abstract

The invention provides a pedal feeling simulator and a brake-by-wire system, and relates to the technical field of vehicle accessories, the pedal feeling simulator comprises a first shell, a second shell and an elastic simulation mechanism, the second shell and the first shell are movably connected in an inserted mode, and a mounting cavity is formed between the second shell and the first shell; the elastic simulation mechanism comprises an execution piece movably arranged in the installation cavity, a first elastic assembly arranged between the execution piece and the first shell, and a second elastic assembly arranged between the execution piece and the second shell. The rigidity of the first elastic assembly is larger than that of the second elastic assembly. Different braking feelings can be better simulated, the braking experience of a user is improved, a rubber elastic part does not need to be used, and the service life is longer.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle accessories, and in particular to a pedal feeling simulator and a brake-by-wire system. Background Art

[0002] The brake pedal input and friction braking force of the traditional braking system cannot be decoupled, and there are great limitations in use, so that the traditional braking system can no longer better meet the needs of intelligent vehicles in kinetic energy recovery and intelligent driving. The wire control brake system realizes the decoupling of the brake pedal input and friction force, so the wire control brake system is increasingly used in vehicles. In order to better improve the user experience, a pedal feel simulation device is used in the wire control brake system to simulate the pedal braking feel. However, in the technical field, although the pedal feel simulation device can use a rubber spring to simulate nonlinear braking force, the elasticity of the rubber spring will change with the change of temperature, especially in a low temperature environment, which will cause the rubber spring to harden, thereby affecting the simulation effect of the pedal feel simulation device. In addition, when the rubber spring is compressed, the diameter of the rubber spring will increase, and then the rubber spring will easily affect the normal use of other surrounding components, such as the coil spring in the pedal feel module device, thereby causing durability problems. Therefore, how to improve the simulation effect and service life of the pedal braking feel has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a pedal feeling simulator and a wire control brake system for improving the simulation effect and service life of the pedal braking feeling.

[0004] The above-mentioned object of the present invention can be achieved by adopting the following technical scheme. The present invention provides a pedal feeling simulator, comprising:

[0005] a first shell;

[0006] A second shell, the second shell being movably plugged into the first shell, and a mounting cavity being formed between the second shell and the first shell;

[0007] An elastic simulation mechanism includes an actuator movably disposed in the mounting cavity, a first elastic component disposed between the actuator and the first shell, and a second elastic component disposed between the actuator and the second shell, wherein the stiffness of the first elastic component is greater than the stiffness of the second elastic component.

[0008] In a preferred embodiment of the present invention, the first elastic component includes a first elastic member arranged between the actuator and the first shell, and a second elastic member arranged between the first elastic member and the first shell, and the stiffness of the first elastic member is smaller than the stiffness of the second elastic member.

[0009] In a preferred embodiment of the present invention, the first elastic member includes a first spring, the first spring is arranged between the actuator and the second elastic member, the first spring has a first preset stiffness, and the first preset stiffness is smaller than the stiffness of the second elastic member.

[0010] In a preferred embodiment of the present invention, the second elastic member includes a first disc spring group, the first disc spring group is arranged between the first elastic member and the first shell, the first disc spring group has a second preset stiffness, and the second preset stiffness is greater than the stiffness of the first elastic member.

[0011] In a preferred embodiment of the present invention, the second elastic member also includes a second disc spring group, the second disc spring group is arranged between the first disc spring group and the first shell, the second disc spring group has a third preset stiffness, and the third preset stiffness is greater than the second preset stiffness.

[0012] In a preferred embodiment of the present invention, a displacement limiter is further included, and the displacement limiter is arranged between the first disc spring group and the second disc spring group.

[0013] In a preferred embodiment of the present invention, an isolating member is further included. The isolating member is disposed between the first elastic member and the second elastic member, and one end of the second shell can abut against the isolating member.

[0014] In a preferred embodiment of the present invention, the isolation member includes an isolation gasket disposed between the first elastic member and the second elastic member.

[0015] In a preferred embodiment of the present invention, the actuator includes an end portion and a rod portion connected to the end portion, the first elastic component is arranged between one end surface of the end portion and the first shell, the second elastic component is arranged between the other end surface of the end portion and the second shell, and the first elastic component is provided with a channel for the rod portion to pass through.

[0016] In a preferred embodiment of the present invention, the second elastic component includes a fourth elastic member, the fourth elastic member is arranged between the actuator and the second shell, and the rigidity of the fourth elastic member is smaller than the rigidity of the first elastic member.

[0017] In a preferred embodiment of the present invention, the second elastic member includes a second spring, the second spring is arranged between the actuator and the second shell, and the second spring has a fourth preset stiffness, and the fourth preset stiffness is smaller than the stiffness of the first elastic component.

[0018] In a preferred embodiment of the present invention, it further includes a limiting structure disposed between the second housing and the actuator, and the second spring is disposed between the second housing and the actuator through the limiting structure.

[0019] In a preferred embodiment of the present invention, the limiting structure includes a first limiting portion provided on the second shell, and a second limiting portion provided on the actuator, and the second spring connects the first limiting portion and the second limiting portion.

[0020] In a preferred embodiment of the present invention, one of the first limiting portion and the second limiting portion is a limiting groove, and the other of the first limiting portion and the second limiting portion is a limiting block.

[0021] In a preferred embodiment of the present invention, the first shell includes a spring seat, which is cylindrical, and the second shell includes a piston, which is cylindrical. The piston is slidably inserted in the spring seat, and the installation cavity is formed between the spring seat and the piston.

[0022] In a preferred embodiment of the present invention, a sliding connection structure is further included between the first shell and the second shell, and the sliding connection structure can limit the movement stroke of the second shell along the axial direction of the first shell.

[0023] In a preferred embodiment of the present invention, the sliding connection structure includes a first connection member slidably mounted on the first shell, and a second connection member connected to the second shell, and the first connection member and the second connection member are detachably connected.

[0024] The present invention also provides a brake-by-wire system, comprising the aforementioned pedal feel simulator.

[0025] The technical solution of the present invention has the following significant beneficial effects:

[0026] When the pedal feel simulator described in the present invention is used, the first shell and the second shell are movably plugged into each other so that the first shell and the second shell can move toward each other to compress the elastic simulation mechanism. The elastic simulation mechanism can generate resistance to simulate the braking feeling, thereby achieving decoupling of the brake pedal input and friction force power, thereby better meeting the use needs of the automobile.

[0027] The elastic simulation mechanism of the present invention utilizes the cooperation of the first elastic component and the second elastic component. When the first shell and / or the second shell is compressed, the damping of the first elastic component and the second elastic component can be controllably superimposed in sequence, so that the stiffness curve of the pedal feel simulator changes nonlinearly to simulate different braking feelings at different stages, with better simulation flexibility, thereby improving the user's braking experience.

[0028] Furthermore, when the first elastic component and / or the second elastic component are composed of elastic parts with different stiffness, by controlling the stiffness and type of each elastic part, there is no need to use rubber elastic parts. On the one hand, this solves the problem that the stiffness of rubber elastic parts will change significantly at different temperatures, thereby improving the simulation effect. On the other hand, it also avoids the deformation of rubber elastic parts and interference with other surrounding parts, thereby improving durability and helping to improve the service life of the pedal feel simulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0031] Figure 1 A side cross-sectional view of an embodiment of the pedal feel simulator of the present invention.

[0032] Reference numerals in the above drawings:

[0033] 100. a first shell;

[0034] 200, second shell;

[0035] 300, elastic simulation mechanism; 310, actuator; 311, end; 312, rod; 320, first elastic component; 321, first elastic member; 322, second elastic member; 3221, first disc spring group; 3222, second disc spring group; 330, second elastic component; 331, fourth elastic member;

[0036] 400, displacement limiter;

[0037] 500, spacers;

[0038] 600, limiting structure; 610, first limiting portion; 620, second limiting portion;

[0039] 700, sliding connection structure; 710, first connection member; 720, second connection member. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Implementation Method 1

[0042] Please refer to Figure 1 As shown, a pedal feel simulator is provided in an embodiment of the present invention, which pedal feel simulator comprises at least a first shell 100, a second shell 200 and an elastic simulation mechanism 300, the second shell 200 and the first shell 100 are movably plugged into each other, and an installation cavity is formed between the second shell 200 and the first shell 100; the elastic simulation mechanism 300 comprises an actuator 310 movably arranged in the installation cavity, a first elastic component 320 arranged between the actuator 310 and the first shell 100, and a second elastic component 330 arranged between the actuator 310 and the second shell 200, and the stiffness of the first elastic component 320 is greater than the stiffness of the second elastic component 330.

[0043] On the whole, when the pedal feel simulator is used, the first shell 100 and the second shell 200 are movably plugged together so that the first shell 100 and the second shell 200 can move toward each other to compress the elastic simulation mechanism 300. The elastic simulation mechanism 300 can generate resistance to simulate the braking feeling, thereby achieving decoupling of the brake pedal input and friction force, thereby better meeting the use needs of the automobile.

[0044] Furthermore, the elastic simulation mechanism 300 of the present invention utilizes the cooperation of the first elastic component 320 and the second elastic component 330. When the first shell 100 and / or the second shell 200 is compressed, the damping of the first elastic component 320 and the second elastic component 330 can be controllably superimposed in sequence, so that the stiffness curve of the pedal feel simulator changes nonlinearly to simulate different braking feelings at different stages, and has better simulation flexibility, thereby improving the user's braking experience.

[0045] Furthermore, when the first elastic component 320 and / or the second elastic component 330 are composed of elastic parts with different stiffness, by controlling the stiffness and type of each elastic part, there is no need to use rubber elastic parts. On the one hand, this solves the problem that the stiffness of rubber elastic parts will change significantly at different temperatures, thereby improving the simulation effect. On the other hand, it also avoids the deformation of rubber elastic parts and interference with other surrounding parts, thereby improving durability and helping to improve the service life of the pedal feel simulator.

[0046] In an embodiment of the present invention, the first elastic component 320 includes a first elastic member 321 arranged between the actuator 310 and the first shell 100, and a second elastic member 322 arranged between the first elastic member 321 and the first shell 100, and the stiffness of the first elastic member 321 is smaller than the stiffness of the second elastic member 322.

[0047] By making the rigidity of the first elastic member 321 smaller than that of the second elastic member 322 , when the first elastic member 321 and the second elastic member 322 are compressed at the same time, the first elastic member 321 will deform before the second elastic member 322 to provide braking resistance.

[0048] Specifically, the first elastic member 321 includes a first spring, which is disposed between the actuator 310 and the second elastic member 322 . The first spring has a first preset stiffness, which is smaller than the stiffness of the second elastic member 322 .

[0049] Designers can adjust the first preset stiffness according to usage requirements, and no specific numerical value is limited here.

[0050] In an embodiment of the present invention, the second elastic member 322 includes a first disc spring group 3221, which is arranged between the first elastic member 321 and the first shell 100, and the first disc spring group 3221 has a second preset stiffness, which is greater than the stiffness of the first elastic member 321.

[0051] The designer can adjust the specific structure of the first disc spring group 3221 and the size of the second preset stiffness according to the use requirements, and no specific restrictions are made here. Preferably, the first disc spring group 3221 includes at least one first disc spring. Among them, the second preset stiffness is the stiffness of the first disc spring.

[0052] Furthermore, the second elastic member 322 also includes a second disc spring group 3222, which is arranged between the first disc spring group 3221 and the first shell 100, and the second disc spring group 3222 has a third preset stiffness, which is greater than the second preset stiffness.

[0053] Preferably, the second disc spring group 3222 includes a plurality of second disc springs. Furthermore, the first disc spring group 3221 and the second disc spring group 3222 may be arranged concentrically. The third preset stiffness is the stiffness of the second disc spring.

[0054] By making the third preset stiffness greater than the second preset stiffness, when under pressure, the first disc spring group 3221 will deform before the second disc spring group 3222 to provide braking damping.

[0055] In an embodiment of the present invention, the second elastic component 330 includes a fourth elastic member 331 , which is disposed between the actuator 310 and the second housing 200 , and the rigidity of the fourth elastic member 331 is smaller than that of the first elastic member 321 .

[0056] By arranging the fourth elastic member 331 between the actuator 310 and the second shell 200 , when the second shell 200 is pressurized, the second shell 200 will press down the fourth elastic member 331 , and the third elastic member will transfer the pressure to the first elastic component 320 via the actuator 310 .

[0057] Since the rigidity of the fourth elastic member 331 is smaller than that of the first elastic member 321 , the fourth elastic member 331 will be deformed before the first elastic member 321 to reduce the braking resistance.

[0058] Specifically, the second elastic member 322 includes a second spring, which is disposed between the actuator 310 and the second housing 200 . The second spring has a fourth preset stiffness, which is smaller than the stiffness of the first elastic member 320 .

[0059] Designers can adjust the size of the fourth preset stiffness according to usage requirements, and no specific numerical limit is imposed here.

[0060] In an embodiment of the present invention, a displacement limiter 400 is further included, and the displacement limiter 400 is arranged between the first disc spring group 3221 and the second disc spring group 3222.

[0061] By setting the displacement limiter 400 between the first disc spring group 3221 and the second disc spring group 3222, when the first disc spring group 3221 and the second disc spring group 3222 are under pressure, the displacement limiter 400 can reduce or avoid the movement between the first disc spring group 3221 and the second disc spring group 3222, thereby helping to improve the use stability of the first elastic component 320.

[0062] Designers can adjust the specific structure of the displacement limiter 400 according to usage requirements. For example, the displacement limiter 400 includes a stop washer arranged between the first disc spring group 3221 and the second disc spring group 3222, and no specific limitation is made here.

[0063] In the embodiment of the present invention, an isolating member 500 is further included. The isolating member 500 is disposed between the first elastic member 321 and the second elastic member 322 . One end of the second shell 200 can abut against the isolating member 500 .

[0064] Specifically, the isolation member 500 includes an isolation gasket disposed between the first elastic member 321 and the second elastic member 322. By disposing the isolation gasket between the first elastic member 321 and the second elastic member 322, the isolation gasket can better support the first elastic member 321, and the isolation gasket can also evenly transfer the pressure on the first elastic member 321 to the second elastic member 322, thereby improving the uniformity of pressure.

[0065] In an embodiment of the present invention, the actuator 310 includes an end portion 311 and a rod portion 312 connected to the end portion 311, the first elastic component 320 is arranged between one side end surface of the end portion 311 and the first shell 100, the second elastic component 330 is arranged between the other end surface of the end portion 311 and the second shell 200, and the first elastic component 320 is provided with a channel for the rod portion 312 to pass through.

[0066] Specifically, the first elastic member 321 includes a first spring, and the first spring is sleeved on the rod portion 312. In addition, the second elastic member 322 includes a first disc spring group 3221 and a second disc spring group 3222, and the central holes of the first disc spring group 3221 and the second disc spring group 3222 form the channel, and the first disc spring group 3221 and the second disc spring group 3222 can also be sleeved on the rod portion 312.

[0067] The rod portion 312 cooperates with the inner wall of the first housing 100 , which helps to improve the installation stability of the first spring, the first disc spring group 3221 and the second disc spring group 3222 .

[0068] Of course, designers can adjust the specific structure of the actuator 310 according to usage requirements, and no specific restrictions are made here.

[0069] In the embodiment of the present invention, a limiting structure 600 is further included between the second housing 200 and the actuator 310 , and the second spring is disposed between the second housing 200 and the actuator 310 through the limiting structure 600 .

[0070] The limiting structure 600 can limit the second spring to prevent the second spring from moving during use, thereby helping to improve the use stability of the pedal feel simulator.

[0071] Specifically, the limiting structure 600 includes a first limiting portion 610 disposed on the second housing 200 , and a second limiting portion 620 disposed on the actuator 310 , and the second spring connects the first limiting portion 610 and the second limiting portion 620 .

[0072] Designers can adjust the specific structures of the first limiting portion 610 and the second limiting portion 620 according to the use requirements, and no specific limitation is made here. For example, one of the first limiting portion 610 and the second limiting portion 620 is a limiting groove, and the other of the first limiting portion 610 and the second limiting portion 620 is a limiting block.

[0073] Preferably, a limiting groove is provided on the end 311 of the actuator 310, one end of the second spring is inserted into the limiting groove, a limiting block is protruding from the second shell 200, and the other end of the second spring is sleeved on the limiting block.

[0074] In a preferred embodiment of the present invention, the pedal feeling simulator comprises a first spring, a second spring, a first disc spring group 3221 and a second disc spring group 3222. The specific braking simulation process of the pedal feeling simulator is as follows:

[0075] The first stage: applying pressure to the second housing 200, the second housing 200 compresses the second spring downward, causing the second spring to deform first under pressure until the second housing 200 abuts against the actuator 310;

[0076] The second stage: the second housing 200 continues to press the actuator 310 downward, and the actuator 310 compresses the first spring downward, causing the first spring to deform under pressure until the second housing 200 abuts against the isolation member 500;

[0077] The third stage: the second housing 200 continues to press down the isolation member 500, and the isolation member 500 compresses the first disc spring group 3221 downward, so that the first disc spring group 3221 is deformed under pressure until the first disc spring group 3221 is completely compressed onto the displacement limiter;

[0078] The fourth stage: the second shell 200 continues to press downward, driving the first disc spring group 3221 to compress the displacement limiter 400 downward, and the displacement limiter compresses the second disc spring group 3222 downward, causing the second disc spring group 3222 to be deformed under pressure, thereby providing the final displacement.

[0079] Among them, during the compression of the first spring, the second spring, the first disc spring group 3221 and the second disc spring group 3222, the stiffness of the components can be superimposed in an orderly manner, so that the pedal feel simulator can simulate different stiffness curves according to design requirements and has a better braking simulation effect.

[0080] In an embodiment of the present invention, the first housing 100 includes a spring seat which is cylindrically arranged, and the second housing 200 includes a piston which is cylindrically arranged and slidably inserted in the spring seat, and an installation cavity is formed between the spring seat and the piston.

[0081] Of course, in other feasible embodiments, designers can adjust the specific shapes of the first shell 100 and the second shell 200 according to usage, and no specific limitation is made here.

[0082] After the first shell 100 and the second shell 200 are movably plugged in, the second shell 200 may be pushed out of the first shell 100 under the elastic force of the elastic simulation mechanism 300 .

[0083] In order to prevent the second shell 200 from separating from the first shell 100, in an embodiment of the present invention, a sliding connection structure 700 is also provided between the first shell 100 and the second shell 200, and the sliding connection structure 700 can limit the movement range of the second shell 200 along the axial direction of the first shell 100.

[0084] Specifically, the sliding connection structure 700 includes a first connection member 710 slidably mounted on the first housing 100 , and a second connection member 720 connected to the second housing 200 . The first connection member 710 and the second connection member 720 are detachably connected.

[0085] Furthermore, a raised limiting shoulder is provided on the outer wall of the first shell 100 , and the first connecting member 710 can be limited along the axial direction of the first shell 100 by the limiting shoulder to prevent the first connecting member 710 from being separated from the first shell 100 along with the second shell 200 .

[0086] Designers can adjust the specific structures of the first connecting member 710 and the second connecting member 720 according to usage requirements, and no specific limitation is made here.

[0087] For example, the first connecting member 710 includes a threaded sleeve, which is slidably mounted on the first shell 100 , and the second connecting member 720 includes a cover, which is mounted on the second shell 200 .

[0088] Furthermore, the cover body and the screw sleeve may be connected via threads, or the cover body and the screw sleeve may be detachably clamped, or the cover body and the screw sleeve may be detachably connected via a connector, which is not specifically limited herein.

[0089] Of course, after the cover body and the screw sleeve are installed, the cover body and the screw sleeve can also be fixedly connected, and no specific limitation is made here.

[0090] In the embodiment of the present invention, a sealing structure is provided between the cover and the first housing 100 and / or between the cover and the second housing 200 .

[0091] The sealing structure can play an isolating role, preventing impurities and water from entering the installation cavity and contaminating the elastic simulation mechanism 300. Designers can adjust the specific structure of the sealing structure according to the use requirements, such as the sealing ring, etc., and no specific limitation is made here.

[0092] Implementation Method 2

[0093] In an embodiment of the present invention, a brake-by-wire system is provided, and the brake-by-wire system includes the pedal feel simulator described in Embodiment 1. The specific structure, working principle and beneficial effects of the pedal feel simulator are the same as those described in Embodiment 1, and are not described in detail here. The brake-by-wire system can better simulate different braking feelings by using the pedal feel simulator, thereby improving the user's braking experience, and does not require the use of rubber elastic parts, and has a longer service life.

[0094] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0095] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pedal feel simulator, characterized in that: include: a first shell; A second shell, the second shell being movably plugged into the first shell, and a mounting cavity being formed between the second shell and the first shell; An elastic simulation mechanism, the elastic simulation mechanism includes an actuator movably arranged in the installation cavity, a first elastic component arranged between the actuator and the first shell, and a second elastic component arranged between the actuator and the second shell, the stiffness of the first elastic component is greater than the stiffness of the second elastic component.

2. The pedal feel simulator according to claim 1, characterized in that: The first elastic component includes a first elastic member disposed between the actuator and the first shell, and a second elastic member disposed between the first elastic member and the first shell, and the rigidity of the first elastic member is smaller than the rigidity of the second elastic member.

3. The pedal feel simulator according to claim 2, characterized in that: The first elastic member includes a first spring, the first spring is arranged between the actuator and the second elastic member, the first spring has a first preset stiffness, and the first preset stiffness is smaller than the stiffness of the second elastic member.

4. The pedal feel simulator according to claim 2, characterized in that: The second elastic member includes a first disc spring group, the first disc spring group is arranged between the first elastic member and the first shell, the first disc spring group has a second preset stiffness, and the second preset stiffness is greater than the stiffness of the first elastic member.

5. The pedal feel simulator according to claim 4, characterized in that: The second elastic member also includes a second disc spring group, which is arranged between the first disc spring group and the first shell, and the second disc spring group has a third preset stiffness, which is greater than the second preset stiffness.

6. The pedal feel simulator according to claim 5, characterized in that: It also includes a displacement limiter, which is arranged between the first disc spring group and the second disc spring group.

7. The pedal feel simulator according to claim 2, wherein: It also includes an isolating member, which is disposed between the first elastic member and the second elastic member, and one end of the second shell can abut against the isolating member.

8. The pedal feel simulator according to claim 7, characterized in that: The isolation member includes an isolation gasket disposed between the first elastic member and the second elastic member.

9. The pedal feel simulator according to claim 1, wherein: The actuator includes an end and a rod connected to the end, the first elastic component is arranged between one end surface of the end and the first shell, the second elastic component is arranged between the other end surface of the end and the second shell, and the first elastic component is provided with a channel for the rod to pass through.

10. The pedal feel simulator according to claim 2, wherein: The second elastic component includes a fourth elastic member, the fourth elastic member is arranged between the actuator and the second shell, and the rigidity of the fourth elastic member is smaller than the rigidity of the first elastic member.

11. The pedal feel simulator according to claim 10, wherein: The second elastic member includes a second spring, the second spring is arranged between the actuator and the second shell, and the second spring has a fourth preset stiffness, and the fourth preset stiffness is smaller than the stiffness of the first elastic component.

12. The pedal feel simulator according to claim 11, characterized in that It also includes a limiting structure arranged between the second shell and the actuator, and the second spring is arranged between the second shell and the actuator through the limiting structure.

13. The pedal feel simulator according to claim 12, wherein: The limiting structure includes a first limiting portion provided on the second housing, and a second limiting portion provided on the actuator, and the second spring connects the first limiting portion and the second limiting portion.

14. The pedal feel simulator according to claim 13, wherein: One of the first limiting portion and the second limiting portion is a limiting groove, and the other of the first limiting portion and the second limiting portion is a limiting block.

15. The pedal feel simulator according to claim 1, wherein: The first housing includes a spring seat, which is cylindrically arranged. The second housing includes a piston, which is cylindrically arranged. The piston is slidably inserted in the spring seat, and the installation cavity is formed between the spring seat and the piston.

16. The pedal feel simulator according to claim 1, wherein: It also includes a sliding connection structure arranged between the first shell and the second shell, and the sliding connection structure can limit the movement stroke of the second shell along the axial direction of the first shell.

17. The pedal feel simulator according to claim 16, wherein: The sliding connection structure includes a first connection member slidably mounted on the first shell, and a second connection member connected to the second shell, and the first connection member and the second connection member are detachably connected.

18. A brake-by-wire system, characterized in that: Comprising a pedal feel simulator as claimed in any one of claims 1 to 17.

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