Vehicle pedal simulator

Abstract

A vehicle pedal simulator includes: a housing; a piston portion movably disposed in the housing; a plurality of damper portions mounted on the piston portion, stacked in an axial direction of the piston portion, and supported and compressed by the housing according to movement of the piston portion; and an elastic portion configured to elastically support the piston portion inside the housing. According to the vehicle pedal simulator, the pedal force can be adjusted by changing the diameters, the thicknesses and the hardness of the multiple shock absorber parts.

Description

Technical Field

[0001] Exemplary embodiments of this disclosure relate to a vehicle pedal simulator, and more specifically, to a vehicle pedal simulator capable of providing a braking feel. Background Technology

[0002] Hydraulic systems are typically used in electronic brakes. However, in recent years, the emergence of electric braking systems (brake-by-wire systems) and related technologies for autonomous vehicles has created a demand for non-hydraulic braking systems.

[0003] A pedal simulator is a component mounted on an electromechanical brake (EMB) or electronic booster that provides the driver with the braking sensation produced by a conventional mechanical (hydraulic) brake.

[0004] Traditional pedal simulators use elastically deformable shock absorbers to provide a braking feel similar to that of a hydraulic booster. However, to reproduce a smooth increase in pressure across all braking stages without inflection points, the shock absorber, like a traditional hydraulic booster, would have a complex shape, necessitating the development of new shock absorbers for each application to meet diverse requirements. Therefore, it is necessary to address these issues.

[0005] The background technology of this disclosure is disclosed in Korean Patent Registration No. 10-2223847 (published on March 8, 2021, entitled "Pedal Simulator"). Utility Model Content

[0006] Various embodiments relate to vehicle pedal simulators capable of responding to a variety of braking sensation requirements of the pedal simulator.

[0007] Furthermore, various embodiments relate to vehicle pedal simulators that can be applied regardless of the type and shape of the pedals.

[0008] According to one aspect of this disclosure, a vehicle pedal simulator is provided, comprising: a housing; a piston portion movably disposed within the housing; a plurality of shock absorber portions mounted on the piston portion, stacked axially along the piston portion and supported and compressed by the housing according to movement of the piston portion; and an elastic portion configured to elastically support the piston portion inside the housing.

[0009] The piston portion may include: a piston body located inside the housing and provided with a spherical object; a piston pressing portion disposed on one side of the piston body and provided with a socket rotatably coupled to the spherical object; and a piston rod disposed on the other side of the piston body and configured to pass through a plurality of shock absorber portions.

[0010] The piston portion may further include: a nut, threadedly coupled to the end portion of the piston rod; and a support plate through which the piston rod passes, the support plate being disposed between a plurality of shock absorber portions and the nut and supported by an elastic portion.

[0011] The housing may include: a first housing having a first cavity in which the piston portion is movably accommodated; and a second housing configured to communicate with the first cavity, the second housing having a second cavity in which the piston rod is inserted, and the second housing having a support member for supporting the elastic portion.

[0012] The diameter of the second cavity can be smaller than the diameter of the first cavity.

[0013] The support plate may have a protrusion that protrudes from the outer surface of the support plate and is able to contact the support member.

[0014] The shock absorber section may include: a first shock absorber section having a first plate that contacts the piston body and a first shock absorber member that is disposed on the first plate and is capable of elastic deformation; and a second shock absorber section having a second plate that contacts the first shock absorber member and a second shock absorber member that is disposed on the second plate, contacts the support plate, and is capable of elastic deformation.

[0015] The first and second shock absorber components can have different diameters, thicknesses, or hardnesses.

[0016] The first hook may be formed to protrude from the outer surface of the first plate and be inserted into the first shock absorber component to hook and fix the first shock absorber component; and the second hook may be formed to protrude from the outer surface of the second plate and be inserted into the second shock absorber component to hook and fix the second shock absorber component.

[0017] According to another aspect of this disclosure, a vehicle pedal simulator is provided, comprising: a housing detachably coupled to a pedal portion; a piston portion movably disposed within the housing; a plurality of shock absorber portions mounted on the piston portion, stacked axially along the piston portion and supported and compressed by the housing according to movement of the piston portion; and an elastic portion configured to elastically support the piston portion inside the housing. Attached Figure Description

[0018] Figure 1 This is a perspective view showing a vehicle pedal simulator according to an embodiment of the present disclosure mounted on a suspended pedal section.

[0019] Figure 2 This is a perspective view of a vehicle pedal simulator according to an embodiment of the present disclosure, viewed from one direction.

[0020] Figure 3 It shows the view from another direction. Figure 2 A 3D view of a vehicle pedal simulator.

[0021] Figure 4 This is an exploded perspective view of a vehicle pedal simulator according to an embodiment of the present disclosure, viewed from one direction.

[0022] Figure 5 It shows the view from another direction. Figure 4 Exploded 3D view of a vehicle pedal simulator.

[0023] Figure 6 This is a side cross-sectional view showing a vehicle pedal simulator according to an embodiment of the present disclosure.

[0024] Figure 7 This is a perspective view showing the first shock absorber section in a vehicle pedal simulator according to an embodiment of the present disclosure.

[0025] Figure 8 yes Figure 7 Side section view.

[0026] Figure 9 This is a perspective view showing the second shock absorber section in a vehicle pedal simulator according to an embodiment of the present disclosure.

[0027] Figure 10 yes Figure 9 Side section view.

[0028] Figure 11 This is a cross-sectional view showing the operational state of the vehicle pedal simulator in initial braking according to an embodiment of the present disclosure.

[0029] Figure 12 This is a cross-sectional view showing the operating state of a vehicle pedal simulator in mid- and late-braking according to an embodiment of the present disclosure. Detailed Implementation

[0030] Hereinafter, embodiments of a vehicle pedal simulator according to the present disclosure will be described with reference to the accompanying drawings. In the following description, for clarity and ease of explanation, the thickness of lines and the dimensions of components shown in the figures may be exaggerated. Furthermore, the terms used below are defined in consideration of their function in this disclosure and may vary depending on the intention or practice of the user or operator. Therefore, these terms should be defined based on the entire contents of this application.

[0031] Figure 1 This is a perspective view showing a vehicle pedal simulator according to an embodiment of the present disclosure mounted on a suspended pedal section.

[0032] refer to Figure 1The vehicle pedal simulator 1 according to embodiments of the present disclosure can be detachably installed regardless of the type and shape of the pedal portion 10, such as a suspended pedal portion or an accordion-style pedal portion. Therefore, the vehicle pedal simulator 1 according to embodiments of the present disclosure is modular and can be easily assembled and installed on the pedal portion 10, such as a suspended pedal portion or an accordion-style pedal portion, thereby achieving product versatility.

[0033] The pedal simulator 1 according to an embodiment of the present disclosure can be easily assembled by connecting the bracket 140 disposed in the housing 100 to the suspended pedal section or the organ-type pedal section via a coupling member 20 such as a bolt or nut.

[0034] Figure 2 This is a perspective view of a vehicle pedal simulator according to an embodiment of the present disclosure, viewed from one direction. Figure 3 It shows the view from another direction. Figure 2 A 3D view of a vehicle pedal simulator. Figure 4 This is an exploded perspective view of a vehicle pedal simulator according to an embodiment of the present disclosure, viewed from one direction. Figure 5 It's being viewed from another direction. Figure 4 Exploded 3D view of a vehicle pedal simulator. Figure 6 This is a side cross-sectional view showing a vehicle pedal simulator according to an embodiment of the present disclosure.

[0035] refer to Figures 2 to 6 The vehicle pedal simulator 1 according to an embodiment of the present disclosure includes a housing 100, a piston portion 200, a shock absorber portion 300, and an elastic portion 400, which will be described in detail below.

[0036] The housing 100 forms the overall appearance of the vehicle pedal simulator according to an embodiment of the present disclosure and can support the piston portion 200, the shock absorber portion 300, and the elastic portion 400, which will be described below. The housing 100 may include a first housing 110 and a second housing 120.

[0037] The first outer shell 110 has a predetermined length, and a first cavity 111 can be provided inside the first outer shell 110. That is, the first outer shell 110 can be formed into a hollow shape with a predetermined length. The piston portion 200 can be movably accommodated in the first cavity 111.

[0038] The first cavity 111 can guide the linear movement of the piston body 210 (which will be described below). An opening communicating with the first cavity 111 can be provided on the outer surface of the first housing 110. Figure 6 (Left side).

[0039] The second housing 120 may be disposed on one longitudinal side of the first housing 110. Figure 6(Right side). The second outer shell 120 can be integrally disposed within the first outer shell 110. The second outer shell 120 has a predetermined length, and a second cavity 121 can be provided inside the second outer shell 120. That is, the second outer shell 120 can be formed into a hollow shape with a predetermined length.

[0040] The second cavity 121 may communicate with the first cavity 111. The diameter of the second cavity 121 may be smaller than the diameter of the first cavity 111. A piston rod 230 (described below) may be inserted into the second cavity 121. Furthermore, a nut 250 (described below) may be movably accommodated in the second cavity 121. Thus, the second cavity 121 may guide the linear movement of the piston rod 230, which is coupled to the nut 250.

[0041] A support member 122 for supporting the elastic part 400 may be disposed in the second housing 120. The support member 122 may be formed such that the connection between the first housing 110 and the second housing 120 is stepped. In other words, the support member 122 may be formed to be bent inward into the housing 100.

[0042] The elastic part 400 can be seated on the support member 122. The support member 122 can support the elastic part 400 so that the elastic part 400 can be pressed by the piston part 200.

[0043] The housing 100 may be detachably connected to the pedal portion 10, such as a suspended pedal portion or an organ-type pedal portion. A bracket 140 coupled to the pedal portion 10 may be disposed in the housing 100. The bracket 140 may be formed to protrude from the outer surface of the housing 100. A plurality of brackets 140 may be disposed in the housing 100 spaced apart from each other.

[0044] A hole 141 may be provided in the bracket 140. The hole 141 may be formed to pass through the bracket 140 in the thickness direction. The bracket 140 is connected to the coupling hole formed in the pedal portion 10 by a coupling member 20 such as a bolt or nut, so that the housing 100 can maintain a stable connection with the pedal portion 10 and prevent the housing 100 from rotating.

[0045] A sensor 130 may be further disposed within the housing 100. The sensor 130 may be mounted on the outer surface of the first housing 110. The sensor 130 may be electrically connected to a vehicle controller (not shown) and may detect the position of the magnet 240, which will be described below.

[0046] The piston portion 200 is movably disposed within the housing 100. The piston portion 200 may include a piston body 210, a piston pressing portion 220, a piston rod 230, a nut 250, and a support plate 260.

[0047] The piston body 210 can be located inside the first housing 110. The piston body 210 can be accommodated in the first cavity 111. In other words, the piston body 210 can be movably accommodated in the first cavity 111.

[0048] The piston body 210 can be formed as a plate with a set thickness. The diameter of the piston body 210 can be formed to be larger than the diameter of the second cavity.

[0049] A spherical object 211 may be provided in the piston body 210. The spherical object 211 may be formed to protrude from the outer surface of the piston body 210 facing the piston pressing portion 220. The spherical object 211 may be formed at the center of the piston body. The recess 221 of the piston pressing portion 220 may be connected to the spherical object 211.

[0050] The piston pressing part 220 can be provided on one side of the piston body 210. Figure 6 On the left side. The piston pressing part 220 can be mounted on the piston body 210. In other words, the piston pressing part 220 can be mounted on the ball 211.

[0051] The piston pressing part 220 is exposed through the opening in the housing 100. When an external force is applied, the piston pressing part 220 can move in one direction ( Figure 6 (Move to the right).

[0052] The piston pressing part 220 can be rotatably connected to the piston body 210 in a joint manner. In other words, the socket 221 provided in the piston pressing part 220 can be rotatably connected to the ball 211 provided in the piston body 210.

[0053] The piston body 210 can be caulking-coupled to the piston pressing portion 220. For example, by pressing and caulking the opening of the socket 221 against the piston body 210, the piston pressing portion 220, which is moved by an external force, can remain rotatably connected to the ball 211. The piston body 210 can be caulking within the piston pressing portion 220 to reduce assembly time and cost.

[0054] Piston rod 230 can be located on the other side of piston body 210. Figure 6 On the right side). In other words, the piston rod 230 may be formed on the outer surface of the piston body 210 facing the direction of the second housing 120.

[0055] The piston rod 230 can extend from the center of the piston body 210 toward the location of the second outer casing 120 to a predetermined length. The piston rod 230 can be formed into a rod with a circular cross-section. The diameter of the piston rod 230 can be formed to be smaller than the diameter of the piston body 210.

[0056] The diameter of the piston rod 230 can be made smaller than the diameter of the second cavity 121. The piston rod 230 can be movably accommodated in the first cavity 111 and the second cavity 121.

[0057] Multiple shock absorber sections 300 can be mounted on the piston rod 230. The piston rod 230 can pass through multiple shock absorber sections 300.

[0058] A helical thread may be formed at the end portion of the piston rod 230 facing the direction of the second housing 120. The helical thread may be formed on the outer peripheral surface of the piston rod 230. A nut 250 may be coupled to the end portion of the piston rod 230.

[0059] A magnet 240 may be provided in the piston portion 200. The magnet 240 may be provided on the outer peripheral surface of the piston body 210. The magnet 240 and the piston body 210 are inserted together in an injection mold to be integrally provided in the piston body 210.

[0060] The magnet 240 can be formed along the circumference of the piston body 210. Therefore, the position of the magnet 240 can be detected regardless of the mounting position of the sensor 130 mounted on the housing 100.

[0061] Magnet 240 can measure the position information of piston 200. Magnet 240 is a magnet with magnetic force, and when it moves together with piston 200, magnet 240 can transmit the pedal force applied by piston 200 or the position information of piston 200 to vehicle controller via sensor 130 through changes in magnetic field.

[0062] Nut 250 can be screwed onto the end portion of piston rod 230. Nut 250 is coupled to piston rod 230 and can prevent the plurality of shock absorber portions 300 mounted on piston rod 230 from disengaging axially from piston rod 230. Nut 250 can be movably accommodated in second cavity 121.

[0063] The support plate 260 may be formed in the shape of a plate with an opening in the center to allow the piston rod 230 to pass through. The support plate 260 may be mounted on the piston rod 230. The support plate 260 may be disposed between a plurality of shock absorber portions 300 and nuts 250. An elastic portion 400 located on the support member 122 may elastically support the support plate 260.

[0064] A protrusion 261 may be provided on the support plate 260. The protrusion 261 may be formed on the outer surface of the support plate 260 facing the elastic portion 400. The protrusion 261 may extend from the edge of the support plate 260 to a predetermined length and is formed along the circumferential direction of the support plate 260.

[0065] The protrusion 261 can be formed into a hollow shape, with its interior empty. The inner diameter of the protrusion 261 can be formed to be larger than the outer diameter of the elastic portion 400. In this way, when the support plate 260 is moved toward the elastic portion 400 by pressing the piston portion 200, and then the elastic portion 400 is pressed, the elastic portion 400 can be accommodated inside the protrusion 261. Depending on the movement of the piston portion 200, the protrusion 261 may or may not be in contact with the support member 122.

[0066] The shock absorber section 300 can be mounted on the piston section 200. Multiple shock absorber sections 300 can be configured. Multiple shock absorber sections 300 can be mounted on the piston rod 230. Multiple shock absorber sections 300 can be stacked along the axial direction of the piston rod 230 in a manner passing through the piston rod 230 to surround the piston rod 230.

[0067] Multiple shock absorber sections 300 can be disposed between the piston body 210 and the support plate 260.

[0068] Each of the multiple shock absorber sections 300 can be formed in a hollow shape, with an empty interior. Openings communicating with the internal space of the shock absorber section 300 can be provided at both ends of the shock absorber section 300. The openings can be formed at the center of the shock absorber section 300. Therefore, the piston rod can pass through the center of the shock absorber section 300.

[0069] As the piston 200 moves, multiple shock absorber sections 300 can move together with the piston 200 and elastically deform. When the protrusion 261 of the support plate 260 is supported by the support member 122 in the direction of movement of the piston 200, the multiple shock absorber sections 300 can be pressed between the piston body 210 and the support plate 260.

[0070] When an external force is applied to the piston pressing part 220, causing the piston body 210 to move toward the second housing 120, the piston rod 230 can be inserted into the second cavity 121, and the protrusion 261 of the support plate 260 can be supported by the support member 122, so that the shock absorber part 300 can be pressed between the piston body 210 and the support plate 260.

[0071] Figure 7 This is a perspective view showing the first shock absorber section in a vehicle pedal simulator according to an embodiment of the present disclosure. Figure 8 yes Figure 7 Side section view, Figure 9 This is a perspective view showing the second shock absorber section in a vehicle pedal simulator according to an embodiment of the present disclosure. Figure 10 Figure 9 Side section view.

[0072] refer to Figures 2 to 10According to embodiments of the present disclosure, the shock absorber section 300 may include a first shock absorber section 310 and a second shock absorber section 320. The first shock absorber section 310 may include a first plate 311 and a first shock absorber member 312.

[0073] The first plate 311 can be formed into a plate shape including metallic material. The first plate 311 can contact the piston body 210. The first plate 311 can be pressed onto the piston body 210. The first shock absorber component 312 can be disposed on the first plate 311.

[0074] The first shock absorber component 312 may include an elastically deformable material. The first shock absorber component 312 may include an elastically deformable material such as rubber, silicone, or plastic. The first shock absorber component 312 may be integrally disposed with the first plate 311. The first shock absorber component 312 may be injection molded into the first plate 311.

[0075] A first hook 311a may be provided in the first plate 311. The first hook 311a may be formed to protrude from the outer surface of the first plate 311 that contacts the first shock absorber member 312.

[0076] The first hook 311a can protrude toward the first shock absorber member 312 and form along the inner circumferential surface of the first plate 311, and its end portion can be bent toward the inner circumferential surface of the first shock absorber member 312 to insert into the interior of the first shock absorber member 312. Therefore, the first shock absorber member 312 can be hooked and fixed by the first hook 311a to securely fix it to the first plate 311.

[0077] The second shock absorber section 320 may include a second plate 321 and a second shock absorber component 322.

[0078] The second plate 321 can be formed as a plate including metallic material. The second plate 321 can be formed to have the same diameter and thickness as the first plate 311. The second plate 321 can contact the first shock absorber member 312. The second plate 321 can be pressed onto the first shock absorber member 312. The second shock absorber member 322 can be disposed on the second plate 321.

[0079] The second shock absorber component 322 may include an elastically deformable material. The second shock absorber component 322 may include an elastically deformable material such as rubber, silicone, or plastic. The second shock absorber component 322 may be integrally mounted on the second plate 321. The second shock absorber component 322 may be injection molded into the second plate 321. The second shock absorber component 322 may contact the support plate 260. The support plate 260 may be pressed against the second shock absorber component 322.

[0080] A second hook 321a may be provided in the second plate 321. The second hook 321a may be formed to protrude from the outer surface of the second plate 321 that contacts the second shock absorber member 322.

[0081] The second hook 321a can protrude into the second shock absorber member 322 and form along the inner circumferential surface of the second plate 321, and its end portion can be bent toward the inner circumferential surface of the second shock absorber member 322 to insert into the interior of the second shock absorber member 322. Therefore, the second shock absorber member 322 can be hooked and fixed by the second hook 321a to securely fix it to the second plate 321.

[0082] The first shock absorber component 312 and the second shock absorber component 322 may have different diameters. The outer diameter of the first shock absorber component 312 may be smaller than the outer diameter of the second shock absorber component 322.

[0083] The first damper component 312 and the second damper component 322 may have different thicknesses. The thickness of the first damper component 312 may be less than the thickness of the second damper component 322.

[0084] The first shock absorber component 312 and the second shock absorber component 322 may have different hardnesses. For example, the first shock absorber component 312 may be made of a soft material with a hardness lower than that of the second shock absorber component 322, or the second shock absorber component 322 may be made of a soft material with a hardness lower than that of the first shock absorber component 312.

[0085] The elastic part 400 can elastically support the piston part 200 inside the first housing 110. In other words, the elastic part 400 can elastically support the piston part 200 in the first cavity 111.

[0086] One side of the elastic part 400 ( Figure 6 The right side) can contact the support 122, and its other side ( Figure 6 The left side of the elastic part 400 can contact the outer surface of the support plate 260. In other words, one side of the elastic part 400 can be mounted on the support member 122, and the other side can be mounted on the outer surface of the support plate 260. The elastic part 400 can provide an elastic force to the piston body 210, wherein the piston body 210 moves by an external force applied to the piston pressing part 220.

[0087] The elastic part 400 is compressed between the support plate 260 and the support member 122 by the pressing of the piston body 210, wherein the piston body 210 moves by an external force applied to the piston pressing part 220.

[0088] The compressed elastic portion 400 can provide an elastic force (elastic restoring force) to the piston body 210, causing the piston body 210 to return to its original position. The elastic portion 400 may include a coil spring.

[0089] When the elastic portion 400 is compressed, the elastic force of the elastic portion 400 prevents the multiple shock absorber portions 300 disposed between the piston body 210 and the support plate 260 from being compressed and deformed. In other words, the multiple shock absorber portions 300 do not compress and deform before the elastic portion 400 reaches its compression limit, and the multiple shock absorber portions 300 compress and deform after the protrusion 261 of the support plate 260 is supported on the support member 122.

[0090] The vehicle pedal simulator 1 according to an embodiment of the present disclosure may further include a retainer 500.

[0091] A slit hole 101 may be provided in the housing 100. The slit hole 101 may be formed to pass through the outer peripheral surface of the first housing 110. The slit hole 101 may include a first slit hole 101a and a second slit hole 101b located on the side opposite to the first slit hole 101a.

[0092] The retainer 500 may be formed as an annular shape with one end open. The retainer 500 passes through the first slit hole 101a, and the free end of the retainer 500 is inserted into the second slit hole 101b, so that the retainer 500 can be coupled to the first housing 110.

[0093] The retainer 500 can prevent the piston portion 200 from axially disengaging through the opening in the first housing 110 by interfering with the piston pressing portion 220.

[0094] The operation process of the vehicle pedal simulator formed by the above configuration according to the embodiments of this disclosure will be described below.

[0095] Figure 11 This is a cross-sectional view showing the initial braking operation state of a vehicle pedal simulator according to an embodiment of the present disclosure. Figure 12 This is a cross-sectional view showing the operating states of mid-term and late-term braking of a vehicle pedal simulator according to an embodiment of the present disclosure.

[0096] refer to Figure 11 When the piston pressing part 220 is pressed by an external force, the piston rod 230 and the piston body 210 move together toward the second outer shell 120.

[0097] As the piston body 210 moves, the elastic part 400 is compressed and deformed by the pressure of the support plate 260, and the protrusion 261 of the support plate 260 contacts the support member 122. When the elastic part 400 is compressed, the user can feel the initial braking sensation.

[0098] The position of the magnet 240, which moves through the piston section 200, is detected by the sensor 130. The sensor 130 transmits the position information or pressure information of the piston section 200 to the vehicle controller based on the change in the magnetic field.

[0099] refer to Figure 12 When an external force is continuously applied to the piston pressing part 220, the multiple shock absorber parts 300 that move together with the piston rod 230 are compressed between the piston body 210 and the support plate 260. When the multiple shock absorber parts 300 are compressed, the user can feel the braking sensation in the middle and later stages of braking.

[0100] The position of the magnet 240, which moves through the piston section 200, is detected by the sensor 130. The sensor 130 transmits the position information or pressure information of the piston section 200 to the vehicle controller based on the change in the magnetic field.

[0101] When the external force applied to the piston pressing part 220 is released, the compressed elastic part 400 provides elastic force (elastic restoring force) to the piston body 210 so that the piston body 210 returns to its original position.

[0102] According to an embodiment of the present disclosure, the vehicle pedal simulator 1 can adjust the pedal force by changing the diameter, thickness, and hardness of a plurality of shock absorber sections 300.

[0103] According to the vehicle pedal simulator 1 of the present disclosure, the versatility of various types of pedal parts 10 can be achieved through modularity, without considering the type and shape of the pedal parts 10, which reduces the maintenance and replacement costs of the pedal simulator 1 and improves productivity.

[0104] According to the vehicle pedal simulator 1 of the present disclosure, the pedal return spring can be omitted by elastically supporting the piston portion 200 by the elastic portion 400.

[0105] According to the vehicle pedal simulator 1 of the present disclosure, the pedal travel can be measured by a magnet 240 integrally disposed in the piston section 200.

[0106] According to this disclosure, there is an effect that allows for adjustment of pedal force by changing the diameter, thickness, and stiffness of multiple shock absorber sections.

[0107] Although this disclosure has been described with reference to embodiments shown in the accompanying drawings, these embodiments are merely illustrative, and it should be understood that those skilled in the art can obtain various modifications and equivalent embodiments based on these embodiments.

Claims

1. A vehicle pedal simulator, characterized in that, include: shell; The piston portion is movably disposed within the housing; Multiple shock absorber sections are mounted on the piston section, stacked along the axial direction of the piston section, and supported and compressed by the housing according to the movement of the piston section; as well as An elastic portion is configured to elastically support the piston portion inside the housing.

2. The vehicle pedal simulator according to claim 1, characterized in that, The piston portion includes: The piston body is located inside the outer casing and is provided with a spherical object; A piston pressing part is disposed on one side of the piston body and has a socket rotatably coupled to the spherical object; and A piston rod is disposed on the other side of the piston body and configured to pass through the plurality of shock absorber sections.

3. The vehicle pedal simulator according to claim 2, characterized in that, The piston portion further includes: A nut, threadedly coupled to the end portion of the piston rod; and A support plate through which the piston rod passes is provided, the support plate being disposed between the plurality of shock absorber portions and the nut and supported by the elastic portion.

4. The vehicle pedal simulator according to claim 3, characterized in that, The outer casing includes: A first outer casing, having a first cavity, wherein the piston portion is movably accommodated within the first cavity; and The second outer shell is configured to communicate with the first cavity; the second outer shell has a second cavity, into which the piston rod is inserted; and the second outer shell is provided with a support member to support the elastic part.

5. The vehicle pedal simulator according to claim 4, characterized in that, The diameter of the second cavity is smaller than the diameter of the first cavity.

6. The vehicle pedal simulator according to claim 4, characterized in that, The support plate is provided with a protrusion that protrudes from the outer surface of the support plate and is able to contact the support member.

7. The vehicle pedal simulator according to claim 3, characterized in that, The shock absorber unit includes: The first shock absorber section includes a first plate that contacts the piston body; and a first shock absorber component disposed on the first plate and capable of elastic deformation; and The second shock absorber section includes a second plate that contacts the first shock absorber component; and a second shock absorber component that is disposed on the second plate, contacts the support plate, and is elastically deformable.

8. The vehicle pedal simulator according to claim 7, characterized in that, The first shock absorber component and the second shock absorber component have different diameters, thicknesses or hardnesses.

9. The vehicle pedal simulator according to claim 7, characterized in that: The first plate includes a first hook-like object formed to protrude from the outer surface of the first plate, inserted into the first shock absorber component, hooking and securing the first shock absorber component; and The second plate includes a second hook-like object formed to protrude from the outer surface of the second plate and be inserted into the second shock absorber member to hook and secure the second shock absorber member.

10. A vehicle pedal simulator, characterized in that, include: The housing is detachably coupled to the pedal section; The piston portion is movably disposed within the housing; Multiple shock absorber sections are mounted on the piston section, stacked along the axial direction of the piston section, and supported and compressed by the housing according to the movement of the piston section; as well as An elastic portion is configured to elastically support the piston portion inside the housing.

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