Pedal simulator of vehicle

Abstract

The present invention relates to a pedal simulator for a vehicle, characterized by comprising a housing portion, a piston portion slidably disposed in the housing portion, an elastic portion elastically supporting the piston portion from the inside of the housing portion, a damper portion provided in the piston portion and elastically deformable according to the movement of the piston portion, and a cushioning member provided in the housing portion, disposed facing the damper portion, and compressed by the pressure of the damper portion.

Description

Technology Field

[0001] The present invention relates to a pedal simulator for a vehicle, and more specifically, to a pedal simulator for a vehicle capable of providing a braking sensation. Background Technology

[0002] Generally, hydraulic systems are applied to electronic brakes. Recently, with the emergence of Brake-by-Wire systems and technologies related to autonomous vehicles, there is a demand for the development of non-hydraulic brake systems.

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

[0004] Conventional pedal simulators utilize springs and dampers to provide a braking sensation similar to that of a hydraulic booster. While hydraulic boosters exhibit a pattern where the pedal force rises smoothly without inflection points across all braking ranges, conventional pedal simulators suffer from a problem where a sense of dissonance occurs during the transition from the spring compression range to the damper compression range. This can be perceived by the driver as a lack of tactile sensation. Therefore, there is a need to improve this.

[0005] The background technology of the present invention is disclosed in Korean Registered Patent Publication No. 10-2223847 (published March 8, 2021, Title of Invention: Pedal Simulator). The problem to be solved

[0006] The objective of the present invention, devised to solve the aforementioned problems, is to provide a vehicle pedal simulator capable of eliminating braking disparity when transitioning from the elastic compression section to the damper compression section.

[0007] In addition, the objective of the present invention is to provide a vehicle pedal simulator that can be applied regardless of the pedal type and shape. means of solving the problem

[0008] A pedal simulator for a vehicle according to the present invention, devised to achieve the above objective, comprises: a housing portion; a piston portion slidably disposed in the housing portion; an elastic portion elastically supporting the piston portion inside the housing portion; a damper portion provided in the piston portion and elastically deformable according to the movement of the piston portion; and a cushioning member provided in the housing portion, disposed facing the damper portion, and compressed by the pressure of the damper portion.

[0009] The piston portion may include a piston body portion located inside the housing portion and equipped with a ball portion, a piston pressurizing portion disposed on one side of the piston body portion and equipped with a socket portion rotatably coupled to the ball portion, and a piston rod portion provided on the other side of the piston body portion and equipped with the damper portion.

[0010] The above piston rod portion is provided with an opening at one end and is formed in a hollow shape, and the above damper portion can be received in the above piston rod portion.

[0011] The housing portion may include a hollow portion in which the piston portion is movably accommodated, a solid portion provided on one side of the hollow portion and coupled with the cushioning member to support the damper portion so that the damper portion is compressed by the pressure of the piston portion, and a guide portion formed on the outside of the solid portion, communicating with the hollow portion, and into which the piston rod portion is inserted.

[0012] The above damper part and the above cushioning member may have different hardnesses.

[0013] One side of the elastic part contacts the inner surface of the hollow part, and the other side contacts the outer surface of the piston body part, and can provide elastic force to the piston body part.

[0014] The above housing portion is provided with a slit hole portion, and may further include a retainer portion that passes through the slit hole portion and is coupled to the housing portion, and interferes with the piston pressurizing portion to prevent the piston portion from detaching.

[0015] The above piston portion may further include a magnet portion formed along the circumferential direction of the piston body portion and provided on the outer surface of the piston body portion.

[0016] It may further include a sensor part provided in the housing part and detecting the position of the magnet part.

[0017] A pedal simulator for a vehicle according to the present invention comprises: a housing portion detachably coupled to a pedal portion; a piston portion slidably disposed in the housing portion; an elastic portion elastically supporting the piston portion inside the housing portion; a damper portion provided in the piston portion and elastically deformable according to the movement of the piston portion; and a cushioning member provided in the housing portion, disposed facing the damper portion, and compressed by the pressure of the damper portion. Effects of the invention

[0018] The present invention has the effect of improving the braking disparity when transitioning from the elastic compression section to the damper compression section by means of a cushioning member compressed by the pressure of the damper section, thereby ensuring a smooth braking sensation.

[0019] In addition, the present invention has the effect of being able to adjust the pressure by the density, thickness, etc. of the cushioning member.

[0020] In addition, the present invention has the effect of reducing repair and replacement costs for pedal simulators and improving productivity by enabling commonality across various types of pedal parts through modularization applicable regardless of the type and shape of the pedal part.

[0021] In addition, the present invention has the effect of eliminating the pedal return spring by means of an elastic part that elastically supports the piston part.

[0022] In addition, the present invention has the effect of being able to measure the pedal stroke by means of a magnet part integrally provided with the piston part.

[0023] In addition, the present invention has the effect of being able to adjust the braking force by the length, outer diameter, hardness, etc. of the housing part, elastic part, and damper part. Brief explanation of the drawing

[0024] FIG. 1 is a perspective view showing a state in which a pedal simulator of a vehicle according to an embodiment of the present invention is mounted on a pendant-type pedal part. FIG. 2 is an external perspective view of a vehicle pedal simulator according to an embodiment of the present invention, viewed from one direction. FIG. 3 is an external perspective view of the pedal simulator of the vehicle of FIG. 2 viewed from a different direction. FIG. 4 is an exploded perspective view of a vehicle pedal simulator according to an embodiment of the present invention, viewed from one direction. FIG. 5 is an exploded perspective view of the pedal simulator of the vehicle of FIG. 4 viewed from a different direction. FIG. 6 is a cross-sectional view showing a pedal simulator of a vehicle according to an embodiment of the present invention, FIG. 7 is a cross-sectional view of the operating state showing the initial braking of a pedal simulator of a vehicle according to an embodiment of the present invention. FIG. 8 is a cross-sectional view of the operating state showing the mid-to-late braking of a pedal simulator of a vehicle according to an embodiment of the present invention. Specific details for implementing the invention

[0025] Hereinafter, an embodiment of a vehicle pedal simulator according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation. Furthermore, the terms described below are defined considering their functions in the present invention, and these may vary depending on the intention or convention of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0027] FIG. 1 is a perspective view showing a state in which a pedal simulator of a vehicle according to an embodiment of the present invention is mounted on a pendant-type pedal part.

[0028] Referring to FIG. 1, the pedal simulator (1) of a vehicle according to an embodiment of the present invention can be detachably mounted regardless of the type and shape of the pedal part (10), such as a pendant type pedal part or an organ type pedal part. Accordingly, the pedal simulator (1) of a vehicle according to an embodiment of the present invention can be modularized and easily assembled and mounted on the pedal part (10), such as a pendant type pedal part or an organ type pedal part, thereby enabling product standardization.

[0029] In the pedal simulator (1) according to an embodiment of the present invention, the bracket part (150) provided in the housing part (100) is connected to the pendant type pedal part or organ type pedal part via a connecting member (20) such as a bolt or nut, so that assembly can be easily performed.

[0030] FIG. 2 is an external perspective view of a vehicle pedal simulator according to an embodiment of the present invention viewed from one direction, FIG. 3 is an external perspective view of the vehicle pedal simulator of FIG. 2 viewed from another direction, FIG. 4 is an exploded perspective view of a vehicle pedal simulator according to an embodiment of the present invention viewed from one direction, FIG. 5 is an exploded perspective view of the vehicle pedal simulator of FIG. 4 viewed from another direction, and FIG. 6 is a cross-sectional view showing a vehicle pedal simulator according to an embodiment of the present invention.

[0031] Referring to FIGS. 2 to 6, a pedal simulator (1) of a vehicle according to an embodiment of the present invention includes a housing part (100), a piston part (200), an elastic part (300), a damper part (400), and a cushioning member (500), which are described in detail as follows.

[0032] The housing part (100) may include a hollow part (110), a solid part (120), and a guide part (130).

[0033] The hollow portion (110) is provided on the inner side of the housing portion (100) and can be formed in a hollow shape having a set length. The piston portion (200) can be movably accommodated in the hollow portion (110).

[0034] The hollow portion (110) can guide the linear movement of the piston body portion (210). An opening communicating with the hollow portion (110) may be provided on the outer surface (left side in FIG. 6) of the housing portion (100). The hollow portion (110) may be formed as a cylindrical groove.

[0035] The hollow portion (110) may include a first hollow portion (111) and a second hollow portion (112) having an inner diameter smaller than the inner diameter of the first hollow portion (111). Accordingly, a stepped portion (110a) that is bent inwardly into the housing portion (100) may be formed between the first hollow portion (111) and the second hollow portion (112). An elastic portion (300) may be seated on the stepped portion (110a).

[0036] The solid portion (120) is provided on the inner side of the housing portion (100) and may be provided on one side (right side according to FIG. 6) of the hollow portion (110). The solid portion (120) may be formed in a solid shape having a set length.

[0037] The solid portion (120) may be located inside the second hollow portion (112). The diameter of the solid portion (120) may be formed to be smaller than the diameter of the second hollow portion (112).

[0038] The solid portion (120) can support the damper portion (400) so that the damper portion (400) is compressed by the pressure of the piston portion (200). A cushioning member (500) may be coupled to the solid portion (120). The solid portion (120) may be provided with a seating portion (120a). The seating portion (120a) may be formed in the shape of a groove that is recessed into the outer surface of the solid portion (120) facing the direction in which the piston portion (200) is located.

[0039] The guide portion (130) may be provided on the inner side of the housing portion (100) and on the outer side of the solid portion (120). To elaborate, the guide portion (130) may be formed between the inner surface of the second hollow portion (112) and the outer surface of the solid portion (120), and may be formed along the circumferential direction of the second hollow portion (112) and the solid portion (120).

[0040] The guide portion (130) can communicate with the first hollow portion (111). A piston rod portion (230) can be inserted into the guide portion (130). The guide portion (130) can guide the linear movement of the piston rod portion (230).

[0041] The housing portion (100) can be detachably coupled to a pedal portion (10), such as a pendant-type pedal portion or an organ-type pedal portion. The housing portion (100) may be provided with a bracket portion (150) that is coupled to the pedal portion (10). The bracket portion (150) may be formed protruding from the outer surface of the housing portion (100). A plurality of bracket portions (150) may be spaced apart and arranged on the housing portion (100).

[0042] A hole (151) may be provided in the bracket portion (150). The hole (151) may be formed by penetrating the bracket portion (150) in the thickness direction. The bracket portion (150) is coupled to a coupling hole formed in the pedal portion (10) via a coupling member (20), such as a bolt or nut, so that the housing portion (100) is stably coupled to the pedal portion (10) and rotation of the housing portion (100) can be prevented.

[0043] The housing portion (100) may further be provided with a sensor portion (140). The sensor portion (140) may be mounted on the outer surface of the housing portion (100). The sensor portion (140) may be electrically connected to a control portion (not shown) of a vehicle and may detect the position of the magnet portion (240).

[0044] The piston portion (200) may be slidably disposed in the housing portion (100). The piston portion (200) may include a piston body portion (210), a piston pressurizing portion (220), and a piston rod portion (230).

[0045] The piston body portion (210) may be located inside the housing portion (100). The piston body portion (210) may be received in the hollow portion (110). Additionally, the piston body portion (210) may be movably received in the first hollow portion (111). The piston body portion (210) may be formed in a plate shape.

[0046] A spherical ball portion (211) may be provided in the piston body portion (210). The ball portion (211) may be formed protrudingly on the outer surface of the piston body portion (210) facing the piston pressurizing portion (220). A socket portion (221) of the piston pressurizing portion (220) may be coupled to the ball portion (211).

[0047] A protrusion (210a) may be provided on the piston body portion (210). The protrusion (210a) may be formed protrudingly on the outer surface of the piston body portion (210) facing the direction in which the solid portion (120) is located. The protrusion (210a) may be located in the central portion of the piston body portion (210). A damper portion (400) may be press-fitted to the protrusion (210a).

[0048] The piston pressurizing part (220) can be mounted on the piston body part (210). Additionally, the piston pressurizing part (220) can be mounted on the ball part (211). The piston pressurizing part (220) can be exposed through the opening of the housing part (100). When an external force is applied, the piston pressurizing part (220) can be moved toward one side (right direction based on FIG. 6).

[0049] The piston pressurizing part (220) can be rotatably connected to the piston body part (210) in a joint manner. To elaborate, the socket part (221) provided in the piston pressurizing part (220) can be rotatably connected to the ball part (211) provided in the piston body part (210).

[0050] The piston body portion (210) can be caulked to the piston pressurizing portion (220). For example, by caulking the opening of the socket portion (221) toward the piston body portion (210), the piston pressurizing portion (220), which is moved by an external force, can be maintained in a state where it is rotatably coupled to the ball portion (211). Since the piston body portion (210) is caulked to the piston pressurizing portion (220), assembly time and cost can be reduced.

[0051] The piston rod portion (230) may be provided on one side (right side according to FIG. 6) of the piston body portion (210). Additionally, the piston rod portion (230) may be formed on the outer surface of the piston body portion (210) facing the direction in which the core portion (120) is located.

[0052] The piston rod portion (230) can be movably accommodated in the hollow portion (110). The diameter of the piston body portion (210) can be formed to be larger than the diameter of the piston rod portion (230).

[0053] The piston rod portion (230) may be formed in a hollow shape with an opening (230a) at one end (right side in FIG. 6) facing the direction in which the solid portion (120) is located. The piston rod portion (230) may be formed in a cylindrical shape having a set length. A damper portion (400) may be mounted on the piston rod portion (230).

[0054] A magnet portion (240) may be provided in the piston portion (200). The magnet portion (240) may be provided on the outer surface of the piston body portion (210). The magnet portion (240) may be integrally provided in the piston body portion (210) by insert injection molding with the piston body portion (210).

[0055] The magnet portion (240) can be formed along the circumferential direction of the piston body portion (210). Therefore, the position of the magnet portion (240) can be detected regardless of the mounting position of the sensor portion (140) mounted on the housing portion (100).

[0056] The magnet part (240) can measure position information of the piston part (200). The magnet part (240) is a magnet having magnetic force, and can transmit the pressure applied by the piston part (200) or the position information of the piston part (200) to the vehicle control unit through the sensor part (140) by changing the magnetic field as it moves together with the piston part (200).

[0057] The elastic part (300) can elastically support the piston part (200) inside the housing part (100). Additionally, the elastic part (300) can elastically support the piston part (200) in the hollow part (110).

[0058] One side of the elastic part (300) (right side according to FIG. 6) may be in contact with the inner surface of the hollow part (110), and the other side (left side according to FIG. 6) may be in contact with the outer surface of the piston body part (210). To elaborate, one side of the elastic part (300) may be seated on the stepped part (110a), and the other side may be seated on the outer surface of the piston body part (210). The elastic part (300) may provide elastic force to the piston body part (210) which moves due to an external force applied to the piston pressurizing part (220).

[0059] The elastic part (300) can be compressed by the piston body part (210) which is moved by an external force applied to the piston pressurizing part (220) between the piston body part (210) and the step part (110a).

[0060] The compressed elastic member (300) can provide elastic force (elastic restoring force) to the piston body (210) to return the piston body (210) to its original position. The elastic member (300) may include a coil spring that wraps around the circumference of the piston rod (230).

[0061] The damper portion (400) may be provided in the piston portion (200). The damper portion (400) may be received inside the piston rod portion (230). A gap may be formed between the inner surface of the piston rod portion (230) and the outer surface of the damper portion (400). The damper portion (400) may be coupled to the inside of the piston rod portion (230) through the opening (230a) of the piston rod portion (230).

[0062] The damper part (400) may include an elastically deformable material. The damper part (400) may include rubber, silicone, plastic, etc. as an elastically deformable material.

[0063] The damper portion (400) may be formed in a hollow shape. Openings communicating with the internal space of the damper portion (400) may be provided at each end of the damper portion (400). A protrusion (210a) formed protruding from the outer surface of the piston body portion (210) may be pressed into one side opening of the damper portion (400), so that the damper portion (400) can be fixed to the inside of the piston rod portion (230).

[0064] The end of the damper portion (400) may be exposed or not exposed from the piston rod portion (230) through the opening (230a) of the piston rod portion (230).

[0065] The damper part (400) moves together with the piston part (200) and can be elastically deformed according to the movement of the piston part (200). The damper part (400) can be supported by the solid part (120) and compressed according to the direction of movement of the piston part (200).

[0066] When the piston rod portion (230) moves toward the solid portion (120) due to an external force applied to the piston pressurizing portion (220), the damper portion (400) is supported by the solid portion (120), and when the piston rod portion (230) is inserted into the guide portion (130), the damper portion (400) can be compressed between the piston body portion (210) and the solid portion (120).

[0067] A cushioning member (500) may be provided in the housing portion (100). The cushioning member (500) may be coupled to the solid portion (120). The cushioning member (500) may be press-fit coupled to the inside of a seating portion (120a) formed on the outer surface of the solid portion (120).

[0068] The cushioning member (500) may protrude from the seating portion (120a). The cushioning member (500) may be spaced apart from the damper portion (400) and positioned to face the damper portion (400). The diameter of the cushioning member (500) may be formed to be larger than the diameter of the damper portion (400). The central axis of the cushioning member (500) and the central axis of the damper portion (400) may coincide with each other.

[0069] The cushioning member (500) may include an elastically deformable material. The cushioning member (500) may be manufactured using materials such as sponge or wool. The cushioning member (500) may be compressed by the pressure of the damper part (400).

[0070] The cushioning member (500) is positioned between the core portion (120) and the damper portion (400) so that the damper portion (400) comes into contact with the core portion (120) and can absorb the shock applied to the core portion (120).

[0071] The damper part (400) and the cushioning member (500) may have different hardnesses. The cushioning member (500) may have a lower hardness than the damper part (400). Additionally, the cushioning member (500) may be made of a softer material than the damper part (400).

[0072] When the damper part (400) presses the cushioning member (500), the damper part (400) is not compressed and deformed by the elastic force of the cushioning member (500), and the cushioning member (500) can be compressed and deformed by the pressure of the damper part (400).

[0073] The damper part (400) is not compressed until the compression limit of the cushioning member (500) is reached, and the damper part (400) can be compressed after the cushioning member (500) reaches the compression limit and the damper part (400) is supported by the solid part (120).

[0074] The pedal simulator (1) of a vehicle according to an embodiment of the present invention may further include a retainer part (600).

[0075] A slit hole portion (101) may be provided in the housing portion (100). The slit hole portion (101) may be formed by penetrating the outer surface of the housing portion (100). The slit hole portion (101) may include a first slit hole portion (101a) and a second slit hole portion (101b) located on the opposite side of the first slit hole portion (101a).

[0076] The retainer portion (600) may be formed in a ring shape with one side open. The retainer portion (600) passes through the first slit hole portion (101a), and the free end of the retainer portion (600) is inserted into the inner side of the second slit hole portion (101b), so that the retainer portion (600) can be coupled to the housing portion (100).

[0077] The retainer portion (600) can interfere with the piston pressurizing portion (220) to prevent the piston portion (200) from moving axially through the opening of the housing portion (100).

[0078] The operation process of a vehicle pedal simulator according to an embodiment of the present invention, configured as described above, is as follows.

[0079] FIG. 7 is a cross-sectional view of the operating state showing the initial braking of a pedal simulator of a vehicle according to an embodiment of the present invention, and FIG. 8 is a cross-sectional view of the operating state showing the mid-to-late braking of a pedal simulator of a vehicle according to an embodiment of the present invention.

[0080] Referring to FIG. 7, when the piston pressurizing part (220) is pressurized by an external force, the piston rod part (230) moves together with the piston body part (210) toward the solid part (120).

[0081] As the piston body (210) moves, the elastic part (300) is compressed and deformed by the pressure of the piston body (210), and the damper part (400) comes into contact with the cushioning member (500). When the elastic part (300) is compressed, the user can feel an initial braking sensation.

[0082] The position of the magnet part (240) moved by the piston part (200) is detected by the sensor part (140), and the sensor part (140) transmits position information or pedal force information of the piston part (200) according to the change in the magnetic field to the control part of the vehicle.

[0083] Referring to FIG. 8, an external force is continuously applied to the piston pressurizing part (220), causing the elastic part (300) to be further compressed, and the piston rod part (230) is inserted into the guide part (130). At the same time, the damper part (400), which moves together with the piston rod part (230), presses the cushioning member (500), causing the cushioning member (500) to be compressed, and the damper part (400) is compressed while being supported by the solid part (120). When the elastic part (300) and the damper part (400) are compressed together, the user can feel a medium-to-late braking sensation.

[0084] The position of the magnet part (240) moved by the piston part (200) is detected by the sensor part (140), and the sensor part (140) transmits position information or pressure information of the piston part (200) according to the change in the magnetic field to the control unit of the vehicle. When the external force applied to the piston pressurizing part (220) is released, the compressed elastic part (300) provides elastic force (elastic restoring force) to the piston body part (210) to return the piston body part (210) to its original position.

[0085] The pedal simulator (1) of a vehicle according to an embodiment of the present invention can improve the braking sensation when transitioning from the compression section of the elastic section (300) to the compression section of the damper section (400) by means of a cushioning member (500) that is compressed by the pressure of the damper section (400), thereby ensuring a smooth braking sensation.

[0086] The pedal simulator (1) of a vehicle according to an embodiment of the present invention can adjust the pedal force by the density, thickness, etc. of the cushioning member (500).

[0087] The pedal simulator (1) of a vehicle according to an embodiment of the present invention can be used with various types of pedal parts (10) through modularization that is applicable regardless of the type and shape of the pedal part (10), thereby reducing repair and replacement costs of the pedal simulator (1) and improving productivity.

[0088] The pedal simulator (1) of a vehicle according to an embodiment of the present invention can remove the pedal return spring by means of an elastic part (300) that elastically supports the piston part (200).

[0089] A pedal simulator (1) of a vehicle according to an embodiment of the present invention can measure a pedal stroke by means of a magnet part (240) integrally provided with a piston part (200).

[0090] The pedal simulator (1) of a vehicle according to an embodiment of the present invention can adjust the pedal force by the length, outer diameter, hardness, etc. of the housing part (100), elastic part (300), and damper part (400).

[0091] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the claims below. Explanation of the symbols

[0092] 1: Pedal Simulator 10: Pedal Section 20: Connecting member 100: Housing part 101: Slit hole section 110: Hollow section 120: Core section 130: Guide section 140: Sensor section 150: Bracket section 200: Piston part 210: Piston body part 211: Ball part 220: Piston pressurizing part 221: Socket part 230: Piston rod part 230a: Opening 240: Magnet part 300: Elastic part 400: Damper part 500: Cushioning member 600: Retainer part

Claims

Claim 1 A pedal simulator for a vehicle comprising: a housing portion; a piston portion slidably disposed in the housing portion; an elastic portion elastically supporting the piston portion from the inside of the housing portion; a damper portion provided in the piston portion and elastically deformable according to the movement of the piston portion; and a cushioning member provided in the housing portion, disposed facing the damper portion, and compressed by the pressure of the damper portion; wherein the housing portion comprises: a hollow portion movably accommodated by the piston portion; and a solid portion provided on one side of the hollow portion and to which the cushioning member is coupled, wherein the cushioning member is disposed between the solid portion and the damper portion, and when an external force is applied to the piston portion and the piston portion moves toward the solid portion, the damper portion contacts the cushioning member. Claim 2 A pedal simulator for a vehicle according to claim 1, wherein the piston portion comprises: a piston body portion located inside the housing portion and having a ball portion; a piston pressurizing portion disposed on one side of the piston body portion and having a socket portion rotatably coupled to the ball portion; and a piston rod portion provided on the other side of the piston body portion and having a damper portion mounted thereon. Claim 3 A pedal simulator for a vehicle according to paragraph 2, characterized in that the piston rod portion is provided with an opening at one end and is formed in a hollow shape, and the damper portion is received in the piston rod portion. Claim 4 A pedal simulator for a vehicle according to claim 1, wherein the housing part comprises: a solid part that supports the damper part so that the damper part is compressed by the pressure of the piston part; and a guide part formed on the outer side of the solid part, communicating with the hollow part, and into which the piston rod part of the piston part is inserted. Claim 5 A vehicle pedal simulator according to claim 4, characterized in that the damper part and the cushioning member have different hardnesses. Claim 6 A pedal simulator for a vehicle according to claim 4, wherein one side of the elastic part contacts the inner surface of the hollow part and the other side contacts the outer surface of the piston body part of the piston part, and provides elastic force to the piston body part. Claim 7 A pedal simulator for a vehicle, characterized in that, in paragraph 2, the housing part is provided with a slit hole part, and further includes a retainer part that passes through the slit hole part and is coupled to the housing part, and interferes with the piston pressurizing part to prevent the piston part from detaching. Claim 8 A pedal simulator for a vehicle according to claim 2, characterized in that the piston part further comprises a magnet part formed along the circumferential direction of the piston body part and provided on the outer surface of the piston body part. Claim 9 A pedal simulator for a vehicle, characterized in that, in claim 8, it further comprises a sensor unit provided in the housing unit and detecting the position of the magnet unit. Claim 10 A pedal simulator for a vehicle comprising: a housing portion detachably coupled to a pedal portion; a piston portion slidably disposed in the housing portion; an elastic portion elastically supporting the piston portion from the inside of the housing portion; a damper portion provided in the piston portion and elastically deformable according to the movement of the piston portion; and a cushioning member provided in the housing portion, disposed facing the damper portion, and compressed by the pressure of the damper portion; wherein the housing portion comprises: a hollow portion movably accommodating the piston portion; and a solid portion provided on one side of the hollow portion and to which the cushioning member is coupled, wherein the cushioning member is disposed between the solid portion and the damper portion, and when an external force is applied to the piston portion and it moves toward the solid portion, the damper portion contacts the cushioning member.

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