Clutch pedal arrangement for a vehicle

Abstract

Disclosed is a clutch pedal device for a vehicle. According to the present invention, the operating force of a clutch pedal is realized by an elastic body, thereby simplifying the structure and reducing the manufacturing cost. Furthermore, the clutch pedal device for a vehicle is provided, in which a collision response function according to a collision situation is realized, and safety is ensured.

Description

Technical Field

[0001] This application relates to a clutch pedal device for a vehicle; more specifically, this application relates to a clutch pedal device for a vehicle that implements the operating force of the clutch pedal through an elastomer. Background Technology

[0002] Typical manual transmission vehicles include a clutch device, which is mounted between the flywheel and the input shaft of the transmission to interrupt the transmission of engine power when necessary.

[0003] When a driver shifts gears, the driver first depresses the clutch pedal to disengage the clutch mechanism in the vehicle, then shifts to the desired gear by operating the gear shift lever, and finally re-engages the clutch by releasing the depressed clutch pedal, thus completing the gear shift.

[0004] In a hydraulic clutch system, a clutch master cylinder and a clutch release cylinder are installed between the clutch pedal and the clutch assembly. When the driver depresses the clutch pedal and operates the clutch pedal, the combined force of the spring force provided in the clutch pedal and the hydraulic pressure generated by the clutch master cylinder and the clutch release cylinder forms the pedal force (reaction force).

[0005] On the other hand, since it does not use a mechanical structure that utilizes hydraulic pressure, the construction of an electronic clutch system can significantly reduce weight and cost compared to a hydraulic clutch system. Furthermore, its operation allows a pedal sensor located on the clutch pedal to detect the degree of clutch pedal depressing (rotation angle) when the driver depresses the clutch pedal and operates it to shift gears. The detected value is then transmitted as an electrical signal to the control unit (clutch controller and electronic control device for operating the clutch). By receiving various signals (such as signals from the pedal sensor and engine speed), the control unit automatically calculates the optimal clutch operation time suitable for vehicle conditions, thereby controlling the operation of the actuators (devices for operating the clutch interruption, DC motors, etc.) and engaging or disengaging the clutch device through the operation of the actuators.

[0006] Therefore, compared to hydraulic clutch systems, electronic clutch systems do not use hydraulic master cylinders and release cylinders to generate hydraulic pressure. Thus, when the driver depresses and operates the clutch pedal, only the spring force within the clutch pedal provides the final pedal force (reaction force). Consequently, when the driver operates the clutch pedal of an electronic clutch system, the operation is lighter than that of a hydraulic clutch system, which can result in a slightly different driving experience.

[0007] The operating force of the clutch pedal is determined by the spring force, and multiple springs are needed in various directions to achieve this. Consequently, it is difficult to adjust the spring force of the clutch pedal, and the design is complex and increases manufacturing costs.

[0008] The content described in the related technical description is provided only to help understand the background of this application and should not be considered as equivalent to prior art known to a person of ordinary skill in the art. Summary of the Invention

[0009] The subject of this application is to provide a clutch pedal device for a vehicle that simplifies the structure, reduces manufacturing costs, and ensures collision response performance by implementing the clutch pedal operating force with an elastomer.

[0010] According to an embodiment of this application, a clutch pedal device for a vehicle includes a clutch pedal and an elastomer; the clutch pedal is rotatably mounted on a pedal member in a longitudinal direction and has a plurality of protrusions extending forward at different angles; the elastomer is arranged in front of the clutch pedal in the pedal member, and through a plurality of elastic portions having each facing the plurality of protrusions, when the clutch pedal is rotated, the elastic force generated as each protrusion contacts each elastic portion acts as the operating force of the clutch pedal.

[0011] Multiple protrusions can be configured such that an extension line passing through the rotation center point and the distal end portion of the clutch pedal extends at different angles based on a central line that passes through the rotation center point of the clutch pedal in the front-rear direction, and an elastomer can be fixed to the upper end of the pedal member and extend downward, such that multiple elastic portions face each protrusion.

[0012] The impact response of multiple elastic parts can be formed with a first part and a second part, the first part extending downward and the second part bending forward at the end of the first part and extending adjacent to the pedal member.

[0013] The collision response protrusions of the multiple protrusions can extend such that the extension line at the initial position of the clutch pedal is arranged above the center line and faces the first part of the collision response elastic portion.

[0014] The return function elastic parts of the multiple elastic parts can extend downward, allowing their ends to rotate freely, while the return function protrusions of the multiple protrusions can extend such that the extension line at the initial position of the clutch pedal is arranged below the center line and faces the return function elastic parts.

[0015] The return function protrusion can be extended such that the extension line is positioned below the center line at the initial position of the clutch pedal, and even at the position where the clutch pedal is rotated to its maximum, the extension line is still positioned below the center line.

[0016] The return function elastic portion can be elastically supported backward by a secondary spring provided in the pedal component.

[0017] The main resistive elastic part of the multiple elastic sections can extend downwards, thereby fixing its end to the pedal component.

[0018] The main blocking protrusion of the multiple protrusions can be extended such that the extension line is arranged below the center line at the initial position of the clutch pedal, and above the center line at the position where the clutch pedal is rotated to its maximum.

[0019] The main resistance elastic portion may have a rearwardly protruding protrusion that contacts the main resistance protrusion when the clutch pedal is rotated, and the protrusion may be arranged at a position where the extension line of the main resistance protrusion matches the center line.

[0020] The auxiliary resisting elastic parts of multiple elastic sections can extend downward, allowing their ends to rotate freely. The auxiliary resisting protrusions of multiple protrusions can extend such that the extension line is arranged below the center line at the initial position of the clutch pedal, and above the center line at the position where the clutch pedal rotates to its maximum.

[0021] Some of the multiple elastic parts can extend downwards, but some extend obliquely backwards, so that the elastic force generated by the protrusion contacting the elastic part is different.

[0022] Multiple elastic parts can have different widths, thus resulting in different elastic forces generated by the contact between the protrusion and the elastic part. Attached Figure Description

[0023] Figure 1 A view showing the clutch pedal assembly of a vehicle according to an embodiment of this application.

[0024] Figure 2 for Figure 1 The image shows an assembled view of the vehicle's clutch pedal assembly.

[0025] Figure 3 To show Figure 1 The image shows a view of the clutch pedal and the elastic body of the vehicle's clutch pedal assembly.

[0026] Figure 4 To show according to Figure 1 The image shows a view of the elastic element of the clutch pedal assembly of a vehicle.

[0027] Figures 5 to 7 To show according to Figure 1 The image shows a view of the interlocking of the collision response protrusion and the collision response elastic part of the clutch pedal assembly of a vehicle.

[0028] Figure 8 This is a view showing the impact performance of the elastic part in response to a collision.

[0029] Figures 9 to 11 To show according to Figure 1 The image shows a view of the interlocking of the return function protrusion and the return function elastic part of the clutch pedal device of the vehicle.

[0030] Figure 12 This view shows another example of the return functionality elasticity section.

[0031] Figures 13 to 15 To show according to Figure 1 The image shows a view of the interlocking of the main resistance protrusion and the main resistance elastic part of the clutch pedal assembly of a vehicle.

[0032] Figures 16 to 18 To show according to Figure 1 The image shows a view of the interlocking of the auxiliary braking protrusion and the auxiliary braking elastic portion of the clutch pedal device of a vehicle.

[0033] Figure 19 This is a view showing the operating force generated by each elastic component. Detailed Implementation

[0034] In the following description, a clutch pedal device for a vehicle according to an exemplary embodiment of the present application will be described with reference to the accompanying drawings.

[0035] Figure 1 A view showing the clutch pedal assembly of a vehicle according to an embodiment of this application.

[0036] Figure 2 for Figure 1 The image shows an assembled view of the vehicle's clutch pedal assembly. Figure 3 To show Figure 1 The diagram shows a view of the clutch pedal and elastomer of a vehicle's clutch pedal assembly, and... Figure 4 To show according to Figure 1 The image shows a view of the elastic element of the clutch pedal assembly of a vehicle.

[0037] Figures 5 to 7 To show according to Figure 1 The image shows a view of the interlocking of the collision response protrusion and the collision response elastic portion of the vehicle's clutch pedal assembly, and... Figure 8 This is a view showing the impact performance of the elastic part in response to a collision.

[0038] Figures 9 to 11 To show according to Figure 1 The image shows a view of the interlocking of the return function protrusion and the return function elastic part of the clutch pedal device of the vehicle, and... Figure 12 This view shows another example of the return functionality elasticity section.

[0039] Figures 13 to 15 To show according to Figure 1 The image shows a view of the interlocking of the main resistance protrusion and the main resistance elastic part of the clutch pedal assembly of a vehicle.

[0040] Figures 16 to 18 To show according to Figure 1 The image shows a view of the interlocking of the auxiliary braking protrusion and the auxiliary braking elastic portion of the clutch pedal device of a vehicle.

[0041] Figure 19 This is a view showing the operating force generated by each elastic component.

[0042] like Figure 1 and Figure 2 As shown, the clutch pedal device of the vehicle according to this application includes a clutch pedal 100 and an elastic body 200; the clutch pedal 100 is rotatably mounted on a pedal member M in the longitudinal direction and has a plurality of protrusions 110 extending forward at different angles; the elastic body 200 is arranged in front of the clutch pedal 100 in the pedal member M, and through a plurality of elastic portions 210 having respectively facing the plurality of protrusions 110, when the clutch pedal 100 is rotated, the elastic force generated as each protrusion 110 contacts each elastic portion 210 acts as the operating force of the clutch pedal 100.

[0043] Here, the pedal component M can be fixed to the body panel (front bulkhead), the clutch pedal 100 is rotatably connected to the pedal component M via a hinge shaft, and the pedal component M can be equipped with a pedal sensor S for detecting the rotation angle of the clutch pedal 100.

[0044] Specifically, according to this application, a plurality of protrusions 110 are formed on the clutch pedal 100, and a plurality of elastic portions 210 are formed on the elastic body 200 fixed to the pedal member M, such that the elastic force generated as each protrusion 110 comes into contact with each elastic portion 210 acts as the operating force of the clutch pedal 100.

[0045] In other words, according to this application, the operating force of the clutch pedal 100 is generated by only one elastomer 200, and each protrusion 110 of the clutch pedal 100 and each elastic portion 210 of the elastomer 200 face each other. Here, the protrusions 110 and the elastic portions 210 can be configured to contact each other when the clutch pedal 100 rotates while being spaced apart from each other, or to remain in contact with each other.

[0046] Specifically, the protrusions 110 extend forward from the clutch pedal 100. Since the extension angles of the protrusions 110 are different, the contact positions between each protrusion 110 and each elastic portion 210 are different. Therefore, depending on the rotation angle of the clutch pedal 100 when it rotates, the elastic force generated by the contact between each protrusion 110 and each elastic portion 210 varies, resulting in operating force and return force generated according to the rotation of the clutch pedal 100.

[0047] As described above, according to this application, the structure is simplified because the operating force and return force on the clutch pedal 100 can be achieved with a single elastomer 200.

[0048] The present invention will be described in detail as described above. Figure 3 As shown, a plurality of protrusions 110 are configured such that an extension line A passing through the center of rotation of the clutch pedal 100 and the distal end portion extends at different angles based on a central line that passes through the center of rotation of the clutch pedal 100 in the front-rear direction, and an elastomer 200 is fixed to the upper end of the pedal member M and extends downward, such that a plurality of elastic portions 210 face each protrusion 110.

[0049] like Figure 3 As shown, multiple protrusions 110 extend at different angles based on a central line B (which is a dashed line), which passes through the center of rotation of the clutch pedal 100 in the front-rear direction. That is, since the positions of the multiple protrusions 110 facing the elastic body 200 are different according to the extension direction of the central line B, the elastic force generated when the clutch pedal 100 rotates is different, thereby realizing the operating force and the return force.

[0050] like Figure 4 As shown, the elastic body 200 is fixed to the upper end of the pedal member M and has a shape in which multiple elastic portions 210 extend downward. Since the protrusion 110 of the clutch pedal 100 contacts these elastic portions 210 at different positions, the rotational operating force and return force of the clutch pedal 100 are realized.

[0051] Furthermore, some of the multiple elastic portions 210 extend downwards, but extend obliquely forwards or backwards, so that the elastic force generated by the contact between the protrusion 110 and the elastic portion 210 can be different. Additionally, the multiple elastic portions 210 can have different widths, so that the elastic force generated by the contact between the protrusion 110 and the elastic portion 210 can be different.

[0052] In other words, when the elastic portion 210 extends obliquely rearward, the elastic force due to the contact between the protrusion 110 and the elastic portion 210 is further increased; while when the elastic portion 210 extends obliquely forward, the elastic force due to the contact between the protrusion 110 and the elastic portion 210 is decreased. Furthermore, when the width of the elastic portion 210 increases, the elastic force increases; and when the width of the elastic portion 210 relatively decreases, the elastic force decreases. As described above, by adjusting the extension direction and thickness of the elastic portion 210, the elastic force generated when the protrusion 110 contacts the elastic portion 210 during the rotation of the clutch pedal 100 can be set in various ways, thereby setting the operating force and return force of the clutch pedal 100.

[0053] The formation of operating force and return force according to various exemplary embodiments of the protrusion 110 and the elastic portion 210 will be described below.

[0054] like Figure 5 and Figure 6 As shown, the collision-coping elastic portion 211 of the plurality of elastic portions 210 can be formed having a first portion 211a and a second portion 211b, the first portion 211a extending downward, and the second portion 211b bending forward at the end of the first portion 211a and extending adjacent to the pedal member M.

[0055] Furthermore, the collision-response protrusions 111 of the plurality of protrusions 110 can extend such that the extension line A at the initial position of the clutch pedal 100 is arranged above the center line B and can contact the first portion 211a of the collision-response elastic portion 211.

[0056] The impact-resistance elastic part 211 is configured to respond to the impact while generating the operating force and return force of the clutch pedal 100.

[0057] In other words, such as Figure 5 As shown, in the initial position where the clutch pedal 100 is not rotated, the impact-response protrusion contacts the first portion 211a of the impact-response elastic portion 211 via the extension line A arranged above the center line B. Here, as... Figure 6 As shown, even when the clutch pedal 100 is rotated to its maximum, the extension line A of the impact response protrusion 111 remains above the center line B. Accordingly, as... Figure 7 As shown, when the operating force is reduced by the contact between the collision response protrusion 111 and the collision response elastic portion 211, when the clutch pedal 100 is rotated under pressure, the collision response protrusion 111 and the collision response elastic portion 211 separate, thus the elastic force decreases and the operating force increases.

[0058] As described above, by means of the extension angle of the impact response protrusion 111 and the contact of the impact response elastic portion 211, when the driver presses the clutch pedal 100, the elastic force acts in the direction of rotation of the clutch pedal 100, thereby generating an operating force.

[0059] Furthermore, the impact-response elastic portion 211 can be formed having a first portion 211a and a second portion 211b, wherein the impact-response protrusion 111 of the clutch pedal 100 contacts the first portion 211a, and the second portion 211b bends forward at the end of the first portion 211a and extends adjacent to the pedal member M. That is, as Figure 8 As shown, since the second portion 211b of the collision-response elastic portion 211 is positioned adjacent to the pedal member M, when the pedal member M deforms due to a vehicle collision, the pedal member M causes the second portion 211b of the collision-response elastic portion 211 to move, thereby pushing the collision-response protrusion 111. Therefore, when the clutch pedal 100 is pressed and rotated, it forces the clutch pedal 100 to rotate forward, thereby blocking power and preventing secondary accidents caused by vehicle operation.

[0060] As described above, by connecting the collision response protrusion 111 and the collision response elastic portion 211, the operating force of the clutch pedal 100 can be generated, and the collision response function can be realized according to the vehicle collision situation.

[0061] At the same time, such as Figure 9 As shown, the return function elastic portion 212 of the plurality of elastic portions 210 extends downward, thereby allowing its ends to rotate freely, while the return function protrusion 112 of the plurality of protrusions can extend such that the extension line A at the initial position of the clutch pedal 100 is arranged below the center line B and can face the return function elastic portion 212.

[0062] Specifically, the return function protrusion 112 can be extended such that the extension line A is arranged below the center line B at the initial position of the clutch pedal 100, and even at the position where the clutch pedal 100 is rotated to its maximum, the extension line A is still arranged below the center line B.

[0063] In this way, the return function protrusion 112 can contact the return function elastic portion 212 when the extension line A is arranged below the center line B, thereby allowing the return force to be applied to the clutch pedal 100. In addition, the elastic force generated by the contact between the return function protrusion 112 and the return function elastic portion 212 provides another type of operating feel.

[0064] In other words, such as Figure 9 As shown, in the initial position where the clutch pedal 100 is not rotated, the return function protrusion 112 faces the return function elastic portion 212 via the extension line A arranged below the center line B. Here, as... Figure 10 As shown, even when the clutch pedal 100 is rotated to its maximum, the extension line A of the return function protrusion 112 is arranged below the center line B, so that the elastic force is applied backward to the clutch pedal 100.

[0065] Accordingly, such as Figure 11 As shown, when the clutch pedal 100 is rotated under pressure, the operating force increases because the return function protrusion 112 pushes the return function elastic part 212.

[0066] As described above, through the extension angle of the return function protrusion 112 and the contact of the return function elastic portion 212, the elastic force acts in the return direction of the clutch pedal 100, thereby generating a return force.

[0067] At the same time, such as Figure 12 As shown, the secondary spring 212a provided in the pedal component M can elastically support the return function elastic portion backward, thereby increasing the return force due to the increased elastic force. This secondary spring 212a is arranged in front of the return function elastic portion 212 without interfering with the rotation of the clutch pedal 100.

[0068] At the same time, such as Figure 13 As shown, the main retention elastic portion 213 of the multiple elastic portions extends downward so that its end is fixed to the pedal member M, and the main retention protrusion 113 of the multiple protrusions can extend such that at the initial position of the clutch pedal 100, the extension line A is arranged below the center line B, and at the position where the clutch pedal 100 rotates to its maximum, the extension line A is arranged above the center line B.

[0069] Thus, since both ends of the main locking elastic portion 213 are fixed to the pedal member M, a strong elastic force is generated when the protrusion 110 contacts the clutch pedal 100 during rotation. Furthermore, the main locking elastic portion 213 may have a rearwardly protruding protrusion 213a that contacts the main locking protrusion 113 when the clutch pedal 100 rotates. The protrusion 213a can be positioned where the extension line A of the main locking protrusion 113 aligns with the center line B, thereby creating a structure where, as the clutch pedal 100 rotates, the main locking protrusion 113 passes over the protrusion 213a of the main locking elastic portion 213, thereby amplifying the elastic force.

[0070] Specifically, the main blocking protrusion 113 can be formed such that at the initial position of the clutch pedal 100, the extension line A is arranged below the center line B, and at the position of maximum rotation of the clutch pedal 100, the extension line A is arranged above the center line B, so that the elastic force acts in different directions according to the rotation position of the clutch pedal 100, thereby forming a blockage.

[0071] In other words, such as Figure 13 As shown, in the initial position where the clutch pedal 100 is not rotated, the main resistance protrusion 113 faces the return function elastic portion 212 via the extension line A arranged below the center line B. In this case, the elastic force for rotating the clutch pedal 100 rearward acts on the clutch pedal 100. Here, as... Figure 14 As shown, when the clutch pedal 100 rotates, the extension line A of the main resistance protrusion 113 moves upward through the center line B. In this case, the elastic force increases when the main resistance protrusion 113 deforms the main resistance elastic portion 213. Furthermore, when the clutch pedal 100 rotates to its maximum, since the extension line A of the main resistance protrusion 113 is arranged above the center line B, the elastic force for rotating the clutch pedal 100 forward acts on the clutch pedal 100 through the main resistance elastic portion 213.

[0072] Accordingly, such as Figure 15 As shown, when the clutch pedal 100 is pressed and rotated, the main resistance protrusion 113 pushes the main resistance elastic portion 213, increasing the operating force, and resistance is generated at the point when the extension line A reaches the center line B. Thereafter, the main resistance elastic portion 213 pushes the main resistance protrusion 113, decreasing the operating force.

[0073] As described above, by the extension angle of the main blocking protrusion 113 and the contact of the main blocking elastic portion 213, blocking can be generated together with the operating force and the return force.

[0074] At the same time, such as Figure 16As shown, the auxiliary blocking elastic portion 214 of the multiple elastic portions extends downward, thereby allowing its ends to rotate freely, while the auxiliary blocking protrusion 114 of the multiple protrusions can extend such that at the initial position of the clutch pedal 100, the extension line A is arranged below the center line B, and at the position where the clutch pedal 100 rotates to its maximum, the extension line A is arranged above the center line B.

[0075] Therefore, as Figure 16 As shown, in the initial position where the clutch pedal 100 is not rotated, the auxiliary braking protrusion 114 faces the auxiliary braking elastic portion 214 via the extension line A arranged below the center line B. In this case, the elastic force for rotating the clutch pedal 100 rearward acts on the clutch pedal 100. Here, as... Figure 17 As shown, when the clutch pedal 100 rotates, the extension line A of the auxiliary blocking protrusion 114 moves upward through the center line B. In this case, the elastic force is activated when the auxiliary blocking protrusion 114 pushes the auxiliary blocking elastic portion 214. Furthermore, when the clutch pedal 100 rotates to its maximum, since the extension line A of the auxiliary blocking protrusion 114 is arranged above the center line B, the elastic force for rotating the clutch pedal 100 forward acts on the clutch pedal 100 through the auxiliary blocking elastic portion 214.

[0076] Accordingly, such as Figure 18 As shown, when the clutch pedal 100 is pressed and rotated, the auxiliary resistance protrusion 114 pushes the auxiliary resistance elastic portion 214, increasing the operating force, and generating resistance at the point when the extension line A reaches the center line B. Afterwards, the auxiliary resistance elastic portion 214 pushes the auxiliary resistance protrusion 114, decreasing the operating force.

[0077] As described above, by the extension angle of the auxiliary blocking protrusion 114 and the contact of the auxiliary blocking elastic portion 214, blocking can be generated together with the operating force and the return force.

[0078] The clutch pedal device of the vehicle having the above-described structure realizes the operating force of the clutch pedal through an elastic body 200. That is, the operating force is generated by the connection operation of the impact-response protrusion 111 and the impact-response elastic part 211 (see...). Figure 7 The operating force is generated through the connection operation of the return function protrusion 112 and the return function elastic portion 212 (see...). Figure 11 The operating force is generated through the connection operation of the main blocking protrusion 113 and the main blocking elastic portion 213 (see...). Figure 15 ), and the operating force is generated through the connection operation of the auxiliary blocking protrusion 114 and the auxiliary blocking elastic portion 214 (see Figure 18 ), combined with the above-mentioned operational forces, to ultimately achieve as follows Figure 19 The operating force of the clutch pedal 100 shown.

[0079] Furthermore, multiple protrusions 110 and elastic portions 210 may be partially removed or further added to achieve various types of resistance, and each protrusion 110 and elastic portion 210 may be configured in various exemplary embodiments, not limited to the description above.

[0080] Therefore, the clutch pedal 100 implements operating force, return force, and resistance through an elastic body 200, simplifying the structure and reducing manufacturing costs. Furthermore, since a collision response function based on the collision condition is implemented through an elastic body 200, safety is ensured.

[0081] The clutch pedal device of the vehicle with the structure described above simplifies the structure and reduces manufacturing costs because the operating force of the clutch pedal is achieved through an elastic body. Furthermore, safety is ensured because a collision response function based on the collision situation is implemented.

[0082] Although this application has been illustrated and described through specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made to this application without departing from the spirit and scope of this application as defined by the appended claims.

Claims

1. A clutch pedal apparatus of a vehicle, comprising: a clutch pedal rotatably mounted on a pedal member in a front-rear direction and having a plurality of protrusions extending toward the front at different angles; an elastic body disposed in front of the clutch pedal in the pedal member, by having a plurality of elastic portions facing the plurality of protrusions respectively, an elastic force generated as each of the protrusions contacts each of the elastic portions when the clutch pedal is rotated, functions as an operation force of the clutch pedal, wherein the plurality of protrusions are disposed such that an extension line passing through a rotation center point of the clutch pedal and a distal end portion extends at different angles based on a center line passing through the rotation center point of the clutch pedal in the front-rear direction, the elastic body is fixed to an upper side end of the pedal member and extends downward so that the plurality of elastic portions face each of the protrusions, a collision coping elastic portion of the plurality of elastic portions is formed to have a first portion extending downward and a second portion bent forward at an end of the first portion and extending adjacent to the pedal member.

2. The clutch pedal arrangement for a vehicle of claim 1 wherein, a collision coping protrusion of the plurality of protrusions extends so that the extension line is disposed above the center line at an initial position of the clutch pedal and faces the first portion of the collision coping elastic portion.

3. A clutch pedal apparatus of a vehicle, comprising: a clutch pedal rotatably mounted on a pedal member in a front-rear direction and having a plurality of protrusions extending toward the front at different angles; an elastic body disposed in front of the clutch pedal in the pedal member, by having a plurality of elastic portions facing the plurality of protrusions respectively, an elastic force generated as each of the protrusions contacts each of the elastic portions when the clutch pedal is rotated, functions as an operation force of the clutch pedal, wherein the plurality of protrusions are disposed such that an extension line passing through a rotation center point of the clutch pedal and a distal end portion extends at different angles based on a center line passing through the rotation center point of the clutch pedal in the front-rear direction, the elastic body is fixed to an upper side end of the pedal member and extends downward so that the plurality of elastic portions face each of the protrusions, a return function elastic portion of the plurality of elastic portions extends downward so that an end thereof is free to rotate, a return function protrusion of the plurality of protrusions extends so that the extension line is disposed below the center line at an initial position of the clutch pedal and faces the return function elastic portion.

4. The clutch pedal arrangement for a vehicle of claim 3 wherein, the return function protrusion extends so that the extension line is disposed below the center line at the initial position of the clutch pedal and is disposed below the center line even at a position where the clutch pedal is rotated the most.

5. The clutch pedal arrangement for a vehicle of claim 3 wherein, the return function elastic portion is elastically supported rearward by a sub spring provided in the pedal member.

6. The clutch pedal arrangement for a vehicle of claim 1, wherein, a main resistance elastic portion of the plurality of elastic portions extends downward so that an end thereof is fixed to the pedal member.

7. The clutch pedal arrangement for a vehicle of claim 6 wherein, a main resistance protrusion of the plurality of protrusions extends so that the extension line is disposed below the center line at the initial position of the clutch pedal and is disposed above the center line at the position where the clutch pedal is rotated the most.

8. The clutch pedal arrangement for a vehicle of claim 7 wherein, The primary resistance elastic portions are formed with protrusions protruding rearward to contact the primary resistance protrusions when the clutch pedal is turned, The protrusions are arranged at positions where the extension lines of the primary resistance protrusions match the center line.

9. A clutch pedal apparatus of a vehicle, comprising: a clutch pedal rotatably mounted on a pedal member in a front-rear direction and having a plurality of protrusions extending toward the front at different angles; an elastic body arranged in front of the clutch pedal in the pedal member, by having a plurality of elastic portions facing the plurality of protrusions, respectively, causing elastic forces generated as each protrusion contacts each elastic portion when the clutch pedal is turned to act as an operation force of the clutch pedal, wherein the plurality of protrusions are arranged such that an extension line passing through a turning center point of the clutch pedal and a distal end portion extends at different angles based on a center line passing through the turning center point of the clutch pedal in the front-rear direction, the elastic body is fixed to an upper side end of the pedal member and extends downward such that the plurality of elastic portions face each protrusion, the plurality of elastic portions have an auxiliary resistance elastic portion extending downward such that an end thereof is free to turn, the plurality of protrusions have an auxiliary resistance protrusion extending such that the extension line is arranged below the center line at an initial position of the clutch pedal, and the extension line is arranged above the center line at a position where the clutch pedal is turned the most.

10. The clutch pedal assembly of claim 1, wherein, Some of the plurality of elastic portions extend downward but obliquely rearward such that the elastic forces generated by the protrusions contacting the elastic portions are different.

11. The clutch pedal assembly of claim 1, wherein, The plurality of elastic portions have different widths such that the elastic forces generated by the protrusions contacting the elastic portions are different.

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