JP3951546B2 - Accelerator pedal device for vehicle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular accelerator pedal device having a deceleration function in addition to an accelerator function.
[0002]
[Prior art]
This type of apparatus is disclosed in, for example, Japanese Patent Laid-Open No. 10-297451. The device described in this publication adds a brake amount corresponding to the vehicle speed when the accelerator pedal is at a predetermined return position (a position of about 1% when the accelerator is fully opened), and decelerates the vehicle at a deceleration corresponding to the vehicle speed. It is configured as follows. The brake amount is changed with the passage of time from the addition start time.
[0003]
[Problems to be solved by the invention]
However, in the device described in the above publication, the brake is applied by the accelerator pedal almost when the foot is released from the accelerator pedal, and the brake amount in this case is determined according to the vehicle speed, and thus is not always desired by the driver. The vehicle deceleration is not always obtained. Further, in the device described in the above publication, since the target deceleration increases as the vehicle speed increases, the vehicle cannot be driven with inertia while the accelerator pedal is released during high-speed driving. The driver's labor may increase.
[0004]
An object of the present invention is to provide a vehicular accelerator pedal device that can obtain a deceleration operation intended by a driver only by operating an accelerator pedal.
[0005]
[Means for Solving the Problems]
A description will be given with reference to the drawings showing an embodiment.
(1) The invention of claim 1 is applied to a vehicle accelerator pedal device. As shown in FIGS. 1 and 2, the vehicle accelerator pedal device includes an accelerator pedal 1, throttle drive means 11 for adjusting the throttle opening E of the engine, brake drive means 12 for adjusting the brake amount B, When the operation amount detector 3 for detecting the operation amount of the accelerator pedal 1 and the operation amount detection value T detected by the operation amount detector 3 are zero, the throttle opening E is set to zero and the brake amount B is set to When the maximum brake amount Bmax is set and the operation amount detection value T is larger than zero and smaller than the predetermined value T1, the throttle opening E is set to zero and the brake amount B is decreased as the operation amount of the accelerator pedal 1 is increased. When the operation amount detection value T is equal to or greater than the predetermined value T1, the throttle opening E is gradually increased as the operation amount of the accelerator pedal 1 is increased, and the brake amount B is set to zero. To a control unit 10 for controlling the driving of the throttle driving means 11 and the brake driving unit 12, respectively, and a vehicle speed detecting means 7 for detecting a vehicle speed, the control means 10, as shown in FIG. 3, the vehicle speed detecting means 7 When the vehicle speed detection value S detected by the above is equal to or less than the first predetermined value S1, the maximum brake amount Bmax is set to a constant B1, and when the vehicle speed detection value S is larger than the first predetermined value S1 and smaller than the second predetermined value S2. gradually decreases with a maximum amount of brake Bmax an increase in the vehicle speed, as the vehicle speed detected value S is zero the maximum braking amount Bmax when more than a second predetermined value S2, controls the driving of the brake drive unit 12 that is The above-mentioned object is achieved.
( 2 ) The invention according to claim 2 is the vehicle accelerator pedal device according to claim 1 , wherein, as shown in FIG. 2, the control means 10 has an operation amount detection value T larger than zero and smaller than a predetermined value T1. Controls the drive of the brake drive means 12 so that the ratio of the change in the brake amount B to the change in the operation amount T of the accelerator pedal 1 is constant.
( 3 ) The invention of claim 3 is the vehicle accelerator pedal device according to claim 1 , wherein, as shown in FIG. 7 , the control means 10 has an operation amount detection value T larger than zero and smaller than a predetermined value T 1. Controls the drive of the brake drive means 12 so that the brake amount B decreases stepwise as the operation amount T of the accelerator pedal 1 increases.
(4) The invention according to claim 4, in the accelerator pedal device for a vehicle according to claim 1, as shown in FIG. 8, the control means 10, when the operation amount detecting value T is smaller than the predetermined value T1 greater than zero Controls the drive of the brake drive means 12 so that the rate of decrease in the brake amount B with respect to the increase in the operation amount T of the accelerator pedal 1 is gradually reduced .
( 5 ) The invention of claim 5 is applied to a vehicular accelerator pedal device. As shown in FIGS. 1 and 9, the vehicle accelerator pedal device includes an accelerator pedal 1, throttle drive means 11 for adjusting the throttle opening E of the engine, brake drive means 12 for adjusting the brake amount B, When the operation amount detector 3 for detecting the operation amount T of the accelerator pedal 1 and the operation amount detection value T detected by the operation amount detector 3 are zero, the throttle opening E is set to zero and the brake amount B Is the maximum brake amount Bmax, and when the operation amount detection value T is larger than zero and smaller than the first predetermined value TL, the throttle opening E is set to zero and the brake amount B is increased as the operation amount of the accelerator pedal 1 is increased. When the operation amount detection value T is equal to or greater than the first predetermined value TL and smaller than the second predetermined value T1, the vehicle speed is constant, and when the operation amount detection value T is equal to or greater than the second predetermined value T1 The throttle opening E is gradually increased as the amount of operation of the accelerator pedal 1 is increased, and the control means 10 for controlling the driving of the throttle driving means 11 and the brake driving means 12 so as to make the brake amount B zero. By providing, the above-described object is achieved.
[0006]
In the section of the means for solving the above-described problems for explaining the configuration of the present invention, the drawings of the embodiments of the invention are used for easy understanding of the present invention. It is not limited.
[0007]
【The invention's effect】
According to the present invention, since the throttle opening and the brake amount of the engine are controlled according to the operation amount of the accelerator pedal, that is, when the pedal operation amount is zero, the throttle opening is made zero and the brake amount is set to the maximum brake amount. When the pedal operation amount is smaller than the predetermined value, the throttle opening is set to zero and the brake amount is decreased as the pedal operation amount increases.When the pedal operation amount is greater than the predetermined value, the pedal operation amount is increased. Accordingly, the throttle opening is gradually increased and the brake amount is made zero, so that a deceleration operation intended by the driver can be obtained only by operating the accelerator pedal. Further , since the maximum brake amount is controlled according to the vehicle speed, it is possible to add a brake amount according to the driving situation such as traveling on a highway. According to the invention of claim 3 , since the brake amount is decreased stepwise as the pedal operation amount increases when the operation amount of the accelerator pedal is less than or equal to a predetermined value, the driver can change the brake amount due to the operation of the accelerator pedal. Can be easily recognized, and the brake amount can be easily adjusted. Furthermore, according to the invention of claim 4 , when the operation amount of the accelerator pedal is equal to or less than a predetermined value, the rate of decrease of the brake amount with respect to the increase of the pedal operation amount is gradually reduced as the pedal operation amount increases . When the pedal is released, the brake amount can be increased rapidly. Further, according to the invention of claim 5 , since the throttle opening and the brake amount are controlled so that the vehicle speed becomes constant when the accelerator pedal is operated within a predetermined range, the vehicle speed can be controlled only by operating the accelerator pedal. Easy to hold.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
-First embodiment-
FIG. 1 is a diagram showing a configuration of a vehicular accelerator pedal device according to a first embodiment of the present invention. As shown in FIG. 1, an operation amount detector 3, 4 such as a potentiometer for detecting a pedal operation amount is provided on a rotation shaft of an accelerator pedal 1 and a rotation shaft of a brake pedal 2 provided below a driver's foot. As described later, the steering 5 is provided with a volume switch 6 for adjusting the maximum brake amount. A vehicle speed sensor 7 for detecting the vehicle speed is provided on the drive shaft of the vehicle. The accelerator pedal 1 operation amount detector 3, volume switch 6, and vehicle speed sensor 7 are each connected to a controller 10. Based on the input signals from these, the controller 10 executes predetermined processing as will be described later, and outputs control signals to the throttle driving actuator 11 such as a motor and the brake driving actuator 12, respectively. The throttle valve 13 is opened and closed in accordance with the drive amount of the throttle drive actuator 11, thereby increasing or decreasing the engine speed. Return springs 8a and 8b are mounted on the rotating portions of the pedals 1 and 2, respectively, and the pedals 1 and 2 are returned to their initial positions when not operated by the spring force of the return springs 8a and 8b.
[0009]
The operation amount detector 4 of the brake pedal 2 is connected to the brake driving actuator 12. The brake driving actuator 12 is driven by an addition signal obtained by adding the signal from the operation amount detector 8 to the signal from the controller 10, and according to the driving amount, a known brake device including a brake cylinder, a booster, and the like is used. Operate. As a result, the brake disc 14 operates to press the brake pad, and the brake is applied. The brake amount in this case corresponds to the operation amount of the brake disc 14. Note that the brake amount that can be applied by a signal from the controller 10 is, for example, about the engine brake. Therefore, when the vehicle is suddenly decelerated or the vehicle is stopped, the brake pedal 2 is operated to obtain a sufficient brake amount.
[0010]
The opening degree of the throttle valve 13 (throttle opening degree E) and the operation amount of the brake disk 14 (brake amount B) are controlled by the control signal from the controller 10 as follows. FIG. 2 is a diagram illustrating the relationship between the stroke amount T of the accelerator pedal 1, the throttle opening E, and the brake amount B. As shown in FIG. 2, the throttle opening E is zero when the pedal stroke amount T is equal to or less than the predetermined value T1, and increases linearly at a constant rate with respect to the increase in the stroke amount T when the pedal stroke amount T is equal to or greater than the predetermined value T1. When the stroke amount T reaches the maximum Tmax, the throttle opening E also reaches the maximum Emax. On the other hand, the brake amount B is a maximum Bmax when the accelerator pedal 1 is not operated (T = 0), and linearly at a constant rate with respect to the increase of the stroke amount T until the pedal stroke amount T reaches a predetermined value T1. The trolley amount T becomes zero when the trolley amount T is equal to or greater than a predetermined value T1. In this way, when the pedal stroke amount T is equal to or less than the predetermined value T1, the brake amount B corresponding to the stroke amount T acts (deceleration region), and when the pedal stroke amount T is equal to or greater than the predetermined value T1, the throttle opening degree is determined according to the stroke amount T. E changes (acceleration region).
[0011]
The characteristic of the brake amount B in the deceleration region (T ≦ T1) changes as shown by the dotted line in FIG. 2, for example, according to the vehicle speed. FIG. 3 is a diagram showing the relationship between the vehicle speed S and the brake amount (maximum brake amount Bmax) when the accelerator pedal is not operated. As shown in FIG. 3, in a region where the vehicle speed S is a predetermined value S1 or less (low vehicle speed region), the maximum brake amount Bmax is constant at a predetermined value B1, and the vehicle speed S is a region where the predetermined value S1 ≦ S ≦ predetermined value S2 ( In the middle vehicle speed range), the maximum brake amount Bmax gradually decreases as the vehicle speed S increases so that Bmax = 0 is an asymptotic line, and the maximum brake amount Bmax is 0 in the region where the vehicle speed S is equal to or greater than the predetermined value S2 (high vehicle speed region). It becomes. Here, the predetermined value S1 is set to 10 km / h, for example, and the predetermined value S2 is set to 60 km / h, for example.
[0012]
In general, in a low vehicle speed range (S ≦ S1), the driver does not like the brake characteristics to change according to the vehicle speed in order to adjust the vehicle speed with high accuracy. Therefore, as described above, the maximum brake amount Bmax is set to a predetermined value. Keep the value so that the vehicle speed can be adjusted easily. Further, in the high vehicle speed range (S ≧ S2) assuming traveling on an expressway or the like, the rate of traveling by inertia increases, so that the maximum brake amount Bmax is set to 0 as described above so that inertial traveling can be performed efficiently. To. The relationship among the stroke amount T of the accelerator pedal 1, the throttle opening E, and the brake amount B in the high vehicle speed range (S ≧ S2) is as shown in FIG. Since the maximum brake amount Bmax = 0 in the high vehicle speed range (S ≧ S2), the brake amount B in the deceleration region (T ≦ T1) is 0 as shown in FIG. The characteristic (inclination) of the throttle opening E is the same as in FIG. 2, and the throttle opening E increases at a constant rate regardless of the vehicle speed S as the pedal stroke amount T increases.
[0013]
The maximum brake amount B1 (hereinafter, low vehicle speed brake amount) in the low vehicle speed range shown in FIG. 3 is changed by operating the volume switch 6. FIG. 5 is a diagram showing the relationship between the volume switch operation amount α (0 ≦ α ≦ 100%) and the low vehicle speed brake amount B1. As shown in FIG. 5A, the operation amount α of the volume switch 6 and the low vehicle speed brake amount B1 are in a proportional relationship, and when the volume switch 6 is operated to the minimum (α = 0), the low vehicle speed brake amount B1 is 0. become. As a result, as shown by the characteristic A1 in FIG. 5B, the maximum brake amount Bmax is always 0, and the brake is not applied by the operation of the accelerator pedal 1. When the volume switch 6 is operated to the maximum (α = 100%), the low vehicle speed brake amount B1 becomes the maximum value B1max, and the maximum brake amount Bmax is as shown by the characteristic A2 in FIG. For example, when the volume switch 6 is operated in the middle (α = 50%), the low vehicle speed brake amount B1 becomes B1max / 2, and the maximum brake amount Bmax is 50% of the characteristic A2 as shown by the characteristic A3 in FIG. Value. In the memory of the controller 10, the relationship (for example, characteristic A2) between the vehicle speed S and the maximum brake amount Bmax under a predetermined operation amount α of the volume switch 6 is stored in advance as a reference characteristic of the maximum brake amount Bmax. Yes.
[0014]
Next, an example of processing executed by the controller 10 will be described using the flowchart of FIG. First, in step S1, based on the signals from the pedal operation amount detector 3, the vehicle speed sensor 7, and the volume switch 6, the stroke amount T, the vehicle speed detection value S, and the volume switch operation amount α of the accelerator pedal 1 are read out from the memory. A reference characteristic A2 (for example, corresponding to α = 100%) of the maximum brake amount Bmax is read. Next, in step S2, it is determined whether or not the vehicle speed detection value S is smaller than the predetermined value S1, that is, whether or not the vehicle speed is in a low vehicle speed range. In step S3, a low vehicle speed brake amount B1 (= B1max × α / 100) corresponding to the volume switch operation amount α is calculated from the characteristics shown in FIG. 5A. Next, in step S6, the maximum brake amount Bmax is set to B1. To do. On the other hand, if step S2 is negative, the process proceeds to step S4, and it is determined whether or not the vehicle speed detection value S is smaller than a predetermined value S2, that is, whether or not it is in the middle vehicle speed range. If step S4 is affirmed, the process proceeds to step S5, and a low vehicle speed brake amount B1 corresponding to the volume switch operation amount α is calculated as in step S3. Next, in step S7, the maximum brake amount Bmax corresponding to the volume switch operation amount α is calculated by multiplying the reference characteristic A2 of the maximum brake amount Bmax by α / 100. If step S4 is negative, that is, if it is determined that the vehicle is in the high vehicle speed range, the process proceeds to step S8, where the maximum brake amount Bmax is set to zero.
[0015]
When the maximum brake amount Bmax is calculated in any of steps S6 to S8, the process proceeds to step S9. In step S9, it is determined whether or not the pedal stroke amount T is smaller than a predetermined value T1 (see FIG. 2). If the result is affirmative, the process proceeds to step S10. If the result is negative, the process proceeds to step S11. In step S10, the target brake amount B is calculated along the characteristics of FIG. 2, that is, Bmax−Bmax · T / T1, and the target throttle amount E is set to zero. In step S11, the target throttle amount E is calculated from (T−T1) · Emax / (Tmax−T1), and the target brake amount B is set to zero. Next, in step S12, the control signal IB is output to the brake driving actuator 12 so that the brake amount becomes the target brake amount B, and further, in step S13, the valve opening is made so that the throttle opening becomes the target throttle opening E. The control signal IE is output to the actuator 11, and the process returns to step S1.
[0016]
As described above, according to the first embodiment, the control signals IE and IB corresponding to the stroke amount T of the accelerator pedal 1 are output from the controller 10 to the actuators 11 and 12, and the pedal stroke amount T is equal to or less than the predetermined value T1. Since the brake amount B is controlled in accordance with the stroke amount, the brake amount B can be adjusted by operating the accelerator pedal 1, and the driver's intended deceleration operation is changed from the accelerator pedal 1 to the brake pedal 2. And can be done easily. Further, in this case, the maximum brake amount Bmax is reduced as the vehicle speed increases, and the brake amount B becomes 0 when the vehicle speed is equal to or greater than the predetermined value S2, so that coasting on a highway can be easily performed. Further, since the maximum brake amount Bmax is adjusted by operating the volume switch 6, the effectiveness of the brake can be changed according to the preference of the operator. Further, when the brake pedal 2 is depressed, the brake amount is added according to the depression amount, and in this case, a larger brake amount is obtained.
[0017]
-Second Embodiment-
A second embodiment will be described with reference to FIG. The second embodiment differs from the first embodiment in the characteristics of the brake amount B in the deceleration region (T ≦ T1). That is, in the first embodiment, as shown in FIG. 2, the brake amount B is linearly increased in the deceleration region, but in the second embodiment, the brake amount B is nonlinearly increased. increase. FIG. 7 is a view showing the relationship between the pedal stroke amount S, the throttle opening degree E, and the brake amount B obtained by the accelerator pedal device according to the second embodiment. In the second embodiment, the target brake amount B for making the brake characteristic coincide with the characteristic of FIG. 7 is calculated in step S10 of FIG. 6, and the control signal IB corresponding to the target brake amount B is braked in step S12. Output to the driving actuator 12.
[0018]
As shown in FIG. 7, the brake amount B decreases stepwise as the pedal stroke amount T increases. Thus, the driver can easily recognize the change in the brake amount B due to the operation of the accelerator pedal 1, and the adjustment of the brake amount B is facilitated. Moreover, it is good also as a brake characteristic as shown in FIG. That is, the rate of decrease in the brake amount B with respect to the increase in the pedal stroke amount T is gradually reduced . As a result, when the brake pedal 1 is released, the brake amount B can be suddenly increased, and an operation in which the brake is applied on / off is possible.
[0019]
-Third embodiment-
A third embodiment will be described with reference to FIGS. 9 and 10. In the first embodiment, the deceleration region and the acceleration region are provided with the predetermined value T1 as a boundary. However, in the third embodiment, the vehicle speed that keeps the vehicle speed constant between the deceleration region and the acceleration region. A holding area is provided. FIG. 9 is a diagram showing the relationship between the pedal stroke amount T, the throttle opening degree E, and the brake amount B obtained by the accelerator pedal device according to the third embodiment. As shown in FIG. 9, when the pedal stroke amount T is smaller than the predetermined value TL (deceleration region), the throttle opening E is 0, and the brake amount B gradually decreases as the pedal stroke amount T increases. When the pedal stroke amount T is equal to or greater than the predetermined value T1 (acceleration region), the throttle opening E gradually increases as the pedal operation amount increases, and the brake amount B becomes zero. In the range where the pedal stroke amount T is equal to or greater than the predetermined value TL and smaller than the predetermined value T1 (vehicle speed holding region), the throttle opening E and the brake amount B are controlled so as to hold the predetermined vehicle speed S0.
[0020]
FIG. 10 is a flowchart for explaining processing in the controller 10 according to the third embodiment. In addition, the same code | symbol is attached | subjected to the location which performs the same process as FIG. 6, and the difference is mainly demonstrated below. As shown in FIG. 10, when the maximum brake amount Bmax is calculated in steps S6 to S8, the process proceeds to step S9A, and it is determined whether or not the pedal stroke amount T is smaller than a predetermined value TL (see FIG. 9) set in advance. judge. If step S9A is affirmed, the process proceeds to step S14, and if not, the process proceeds to step S9B. In step S14, the vehicle speed constant control flag is set to 0, and the process proceeds to step S10. When the flag is 0, vehicle speed constant control is not performed.
[0021]
In step S9B, it is determined whether or not the pedal stroke amount T is smaller than a predetermined value T1 (see FIG. 9). If the determination is affirmative, the process proceeds to step S15. If the determination is negative, the process proceeds to step S11. In step S15, it is determined whether or not flag = 1. If the determination is affirmative, the process proceeds to step S18, and if the determination is negative, the process proceeds to step S16. In step S16, the vehicle speed detection value S immediately after the accelerator pedal 1 is operated in the vehicle speed holding region (TL ≦ T <T1) is stored as the target speed S0. Next, a flag for constant vehicle speed control is set to 1 in step S17, and the process proceeds to step S18. In step S18, it is determined whether or not the difference | S0−S | between the target vehicle speed S0 and the current vehicle speed S is equal to or less than a preset deviation β. If the determination is affirmative, the process proceeds to step S12, and S0−S> β. If it determines, it will progress to step S19, and if it determines with S-S0> (beta), it will progress to step S20. In step S19, the target brake amount B and the target throttle amount E are calculated so as to increase the vehicle speed S by a predetermined amount ΔS. In step S20, the target brake amount B and the target throttle amount E are calculated so as to decrease the vehicle speed S by a predetermined amount ΔS. Are calculated, and the process proceeds to step S12.
[0022]
As described above, in the third embodiment, the vehicle speed holding area is provided between the deceleration area and the acceleration area, and when the accelerator pedal 1 is operated in the vehicle speed holding area, the actuators 11, Therefore, the vehicle speed can be easily maintained only by operating the accelerator pedal 1.
[0023]
In the above embodiment, the brake amount of the disc brake is controlled. However, a brake amount other than the disc brake may be controlled. In the above embodiment, as shown in FIG. 2, the brake amount B is gradually decreased in the range where the pedal stroke amount T is equal to or less than the predetermined value T1, but the brake amount is increased from 0 to the maximum at the pedal stroke amount T = T1. You may make it increase at a stretch to brake amount Bmax. Further, in the above embodiment, the maximum brake amount Bmax in the low vehicle speed range (S ≦ S1) is constant (= B1) as shown in FIG. 3, but it may be gradually decreased as the vehicle speed S increases.
[0024]
In the correspondence between the above embodiments and the claims, the throttle driving actuator 11 is the throttle driving means, the brake driving actuator 12 is the brake driving means, the controller 10 is the control means, and the vehicle speed sensor 7 is the vehicle speed detection. Each means is configured.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an accelerator pedal device for a vehicle according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a relationship between an accelerator pedal stroke amount, a throttle opening, and a brake amount obtained by the vehicular accelerator pedal device according to the first embodiment;
FIG. 3 is a diagram showing a relationship between a vehicle speed and a maximum brake amount of the accelerator pedal device for a vehicle according to the first embodiment.
FIG. 4 is a diagram showing a relationship between an accelerator pedal stroke amount, a throttle opening degree, and a brake amount in a high vehicle speed range.
FIG. 5 is a diagram showing a change in a maximum brake amount with respect to an operation amount of a volume switch.
FIG. 6 is a flowchart showing an example of processing in a controller constituting the vehicle accelerator pedal device according to the first embodiment.
FIG. 7 is a diagram showing a relationship between an accelerator pedal stroke amount, a throttle opening, and a brake amount obtained by a vehicle accelerator pedal device according to a second embodiment.
FIG. 8 is a diagram showing another relationship between the stroke amount of the accelerator pedal, the throttle opening, and the brake amount obtained by the vehicular accelerator pedal device according to the second embodiment.
FIG. 9 is a view showing the relationship between the stroke amount of the accelerator pedal, the throttle opening degree, and the brake amount obtained by the vehicle accelerator pedal device according to the third embodiment.
FIG. 10 is a flowchart showing an example of processing in a controller constituting the vehicle accelerator pedal device according to the third embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Accelerator pedal 2 Brake pedal 3, 4 Operation amount detector 7 Vehicle speed sensor 10 Controller 11 Throttle drive actuator 12 Brake drive actuator

Claims (5)

An accelerator pedal,
Throttle drive means for adjusting the throttle opening of the engine;
Brake drive means for adjusting the brake amount;
An operation amount detector for detecting an operation amount of the accelerator pedal;
When the operation amount detection value detected by the operation amount detector is zero, the throttle opening is set to zero, the brake amount is set to the maximum brake amount, and the operation amount detection value is greater than zero and greater than a predetermined value. When the operation amount is small, the throttle opening is set to zero, the brake amount is decreased as the operation amount of the accelerator pedal increases, and when the operation amount detection value is equal to or greater than the predetermined value, the operation of the accelerator pedal is performed. Control means for controlling the throttle driving means and the driving of the brake driving means so as to gradually increase the throttle opening as the amount increases and to make the brake amount zero ;
Vehicle speed detecting means for detecting the vehicle speed,
The control means makes the maximum brake amount constant when the vehicle speed detection value detected by the vehicle speed detection means is equal to or less than a first predetermined value, and the vehicle speed detection value is larger than the first predetermined value and is set to a second value. The brake drive means is configured to gradually reduce the maximum brake amount as the vehicle speed increases when the vehicle speed is smaller than a predetermined value, and to set the maximum brake amount to zero when the vehicle speed detection value is equal to or greater than the second predetermined value. An accelerator pedal device for a vehicle that controls driving . The accelerator pedal device for a vehicle according to claim 1,
  When the operation amount detection value is greater than zero and less than the predetermined value, the control means is configured to control the brake drive means so that the ratio of the change in the brake amount to the change in the operation amount of the accelerator pedal is constant. An accelerator pedal device for a vehicle that controls driving. The accelerator pedal device for a vehicle according to claim 1,
  The control means drives the brake drive means so as to decrease the brake amount stepwise as the accelerator pedal operation amount increases when the operation amount detection value is greater than zero and less than the predetermined value. An accelerator pedal device for a vehicle that controls the vehicle. The accelerator pedal device for a vehicle according to claim 1,
  The control means, when the operation amount detection value is larger than zero and smaller than the predetermined value, the brake driving means so as to gradually reduce the rate of decrease in the brake amount with respect to the increase in the operation amount of the accelerator pedal. An accelerator pedal device for a vehicle that controls the driving of the vehicle. An accelerator pedal,
  Throttle drive means for adjusting the throttle opening of the engine;
  Brake drive means for adjusting the brake amount;
  An operation amount detector for detecting an operation amount of the accelerator pedal;
  When the operation amount detection value detected by the operation amount detector is zero, the throttle opening is set to zero, the brake amount is set to the maximum brake amount, and the operation amount detection value is greater than zero and is the first value. When the throttle opening is smaller than a predetermined value, the throttle opening is set to zero, the brake amount is decreased as the operation amount of the accelerator pedal increases, and the operation amount detection value is greater than or equal to the first predetermined value and the second When the operation amount detection value is equal to or greater than the second predetermined value, the throttle opening is gradually increased as the operation amount of the accelerator pedal increases, An accelerator pedal for a vehicle, comprising: a throttle drive means and a control means for controlling the drive of the brake drive means so that the brake amount is zero. Le devices.

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