JP2018143023A - Accelerator device for electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an accelerator device for an electric vehicle, which is capable of preventing the vehicle from starting because of an accelerator operation which is not intended by a driver and increasing operability.SOLUTION: When a forward/backward traveling changeover switch is operated (YES in step S12) and then an accelerator operation is performed within a predetermined time thereafter (YES in step S15), a control part recognizes this as establishment of traveling permission condition and permits traveling of an electric vehicle by driving of a motor (step S16). Even if the accelerator operation is released (YES in step S19) while the electric vehicle is traveling after the establishment of the traveling permission condition, the control part continues permission of traveling (step S16) provided that an acceleration operation is performed again while a prescribed traveling permission continuation condition is satisfied (YES in step S21). The traveling permission continuation condition is a condition of being within a prescribed permission continuation time after releasing of an acceleration operation (YES in step S20).SELECTED DRAWING: Figure 3

Description

  The present invention relates to an accelerator device for an electric vehicle.

  Conventionally, what was described in patent document 1 as an accelerator apparatus of electric vehicles, such as a senior car and a handle type electric wheelchair, is known. The accelerator device described in Patent Document 1 can travel in a desired direction by holding the accelerator lever after reversing the accelerator lever to a position corresponding to the traveling direction.

  As a result, the accelerator device described in Patent Document 1 does not require a separate forward / reverse selector switch, and can prevent the vehicle from starting in a traveling direction unintended by the driver due to forgetting to operate the forward / reverse selector switch.

JP 2002-119547 A

  However, the accelerator device described in Patent Document 1 is used when the driver's body part is unintentionally caught on the handle lever, or when a passerby's clothing or the like is caught on the handle lever. There is a possibility that the accelerator operation unintentionally performed will cause the vehicle to start unintentionally.

  The present invention has been made paying attention to the above problems, and provides an accelerator device for an electric vehicle that can suppress the start of the vehicle due to an accelerator operation not intended by the driver and can improve operability. It is intended to do.

  The present invention includes a forward / reverse switching operation unit that switches a traveling direction of an electric vehicle to forward or reverse, an accelerator operation unit that performs an accelerator operation in the traveling direction switched by the forward / reverse switching operation unit, and an accelerator operation unit An accelerator device for an electric vehicle having a motor driven based on an operation, wherein the accelerator operation is performed within a predetermined time after the forward / reverse switching operation unit is operated, A controller that allows the electric vehicle to travel by driving a motor; and the controller is configured to release the accelerator operation while the electric vehicle is traveling after the travel permission condition is satisfied. When the accelerator operation is performed again in a state where a predetermined travel permission continuation condition is satisfied, the travel permission is continued.

  As described above, according to the present invention, the start of the vehicle due to the accelerator operation not intended by the driver can be suppressed, and the operability can be improved.

FIG. 1 is a perspective view of a handle unit of an electric vehicle equipped with an accelerator device according to a first embodiment of the present invention as viewed from a driver. FIG. 2 is a functional block diagram of the accelerator apparatus for an electric vehicle according to the first embodiment of the present invention. FIG. 3 is a flowchart for explaining the operation of the accelerator device for the electric vehicle according to the first embodiment of the present invention. FIG. 4 is a timing chart illustrating the transition of the travel permission state of the electric vehicle equipped with the accelerator device according to the first embodiment of the present invention. FIG. 5 is a flowchart for explaining the operation of the accelerator apparatus for an electric vehicle according to the second embodiment of the present invention. FIG. 6 is a flowchart for explaining the operation of the accelerator apparatus for an electric vehicle according to the third embodiment of the present invention.

  An accelerator device for an electric vehicle according to an embodiment of the present invention includes a forward / reverse switching operation unit that switches a traveling direction of the electric vehicle to forward or reverse, and an accelerator operation in the traveling direction switched by the forward / reverse switching operation unit. An accelerator device for an electric vehicle having an accelerator operation unit to be performed and a motor driven based on an operation of the accelerator operation unit, wherein the accelerator operation was performed within a predetermined time after the forward / reverse switching operation unit was operated And a control unit that permits the traveling of the electric vehicle by driving the motor, and the control unit is a case where the accelerator operation is released during the traveling of the electric vehicle after the traveling permission condition is satisfied. In addition, when the accelerator operation is performed again in a state where a predetermined travel permission continuation condition is satisfied, the travel permission is continued. Thus, the accelerator device for an electric vehicle according to the embodiment of the present invention can suppress the start of the vehicle due to an accelerator operation not intended by the driver, and can improve operability.

  Hereinafter, an accelerator apparatus for an electric vehicle according to a first embodiment of the present invention will be described with reference to the drawings. 1 to 4 are diagrams for explaining an accelerator device for an electric vehicle according to a first embodiment of the present invention. The electric vehicle according to the present embodiment is a senior car that travels at a low speed of walking speed with a motor as power. In FIG. 1, the up, down, left, and right directions indicate directions viewed from the driver on the vehicle.

  As shown in FIG. 1, the electric vehicle 1 includes a handle unit 10, and the handle unit 10 is provided at a front portion of a vehicle body (not shown).

  The handle unit 10 is rotated by a driver. The handle unit 10 includes a handle main body 11, a switch box 12 disposed so as to pass through the center of the handle main body 11, and a rearview mirror 13 attached to right and left of the switch box 12.

  The switch box 12 is equipped with operating devices and a display device that are used to drive the electric vehicle 1.

  Specifically, on the upper surface of the switch box 12, a power switch 14, an accelerator lever 15, a brake lever 16, a forward / reverse switching switch 17, a blinker switch 18, an alarm switch 19, a maximum speed setting knob 20, a display unit 21, a voice A guidance on / off switch 22 and a distance meter reset switch 23 are provided.

  The power switch 14 is switched between an on position and an off position by a turning operation. When the power switch 14 is operated to the on position, the electric vehicle 1 is turned on. When the power switch 14 is operated to the off position, the electric vehicle 1 is turned off.

  The forward / reverse switching switch 17 is a toggle type switch that tilts in the forward / backward direction, and is for switching the traveling direction of the electric vehicle 1 to forward or reverse.

  The forward / reverse selector switch 17 is rotatable between a forward position for instructing forward movement, a reverse position for instructing backward movement, and a neutral position not instructing forward movement. It returns to the neutral position.

  As the forward / reverse selector switch 17, a switch that performs a three-position momentary operation in which the neutral position is off and the forward position and the reverse position are on can be used.

  The forward position, neutral position, and reverse position of the forward / reverse selector switch 17 are indicated by Pf, Pn, and Pr in FIG. The forward position, neutral position, and reverse position of the forward / reverse selector switch 17 are set to coincide with the longitudinal direction of the electric vehicle 1, the forward position is set in front of the neutral position, and the reverse position is behind the neutral position. Is set. The forward / reverse switch 17 constitutes a forward / reverse switching operation unit in the present invention.

  A pair of accelerator levers 15 are provided on the left and right in the vicinity of the handle body 11 and are movable downward from the initial position. The accelerator lever 15 performs an accelerator operation in the traveling direction switched by the forward / reverse selector switch 17. The accelerator lever 15 constitutes an accelerator operation unit in the present invention.

  When the accelerator lever 15 is pushed down, the electric vehicle 1 advances, and when the hand is released from the accelerator lever 15, the electromagnetic brake is activated and the electric vehicle 1 stops. In addition, when the accelerator lever 15 is strongly squeezed (pulled forward), the electric vehicle 1 stops suddenly.

  The brake lever 16 is provided at the left front portion of the switch box 12, and can be rotated backward from the initial position. The brake lever 16 functions as a brake when the electric vehicle 1 is pushed by hand, and functions as a parking brake when parking.

  A pair of turn signal switches 18 are provided on the left and right. When the left turn signal switch 18 is operated, a left turn is signaled, and when the right turn signal switch 18 is operated, a right turn is signaled.

  The alarm switch 19 is a push button type switch. By pressing the alarm switch 19, an alarm sound is generated.

  The maximum speed setting knob 20 is a dial type operation unit, and adjusts the maximum speed at the time of forward movement within a predetermined speed range. For example, it can be set in the range of 2 km to 6 km per hour. Note that the maximum speed at the time of reverse travel is fixed at 2 km / h, for example.

  The display unit 21 displays a traveling speed, a traveling distance (trip meter), a battery charging state, and the like.

  The voice guidance on / off switch 22 is a button type switch and sets the voice guidance function on or off.

  The distance meter reset switch 23 is reset to reset the travel distance to zero.

  Further, a forward confirmation lamp 25 and a reverse confirmation lamp 26 are provided on the upper surface of the switch box. When the electric vehicle 1 can move forward, the forward movement confirmation lamp 25 is lit, and when the electric vehicle 1 can move backward, the backward movement confirmation lamp 26 is lit.

  A speaker 24 is provided on the lower surface of the switch box 12, and voice guidance and various alarm sounds are output from the speaker 24.

  The electric vehicle 1 configured as described above includes a control unit 100 as shown in FIG. The control unit 100 includes a microcomputer including, for example, a CPU, a RAM, a ROM, an input / output interface, and the like. The CPU uses the temporary storage function of the RAM and performs calculations according to a program stored in advance in the ROM. In the ROM, various control constants used when the CPU executes the program are stored in advance.

  An accelerator lever 15 and a forward / reverse selector switch 17 are electrically connected to the input side of the control unit 100. On the other hand, the motor 9 is electrically connected to the output side of the control unit 100 via an inverter (not shown).

  In such an electric vehicle 1, it is required to prevent the electric vehicle 1 from unintentionally starting due to an accelerator operation not intended by the driver.

  Therefore, the control unit 100 performs a travel permission determination operation described later, so that the motor 100 is operated when the accelerator lever 15 is operated within a predetermined time (T0 in FIG. 4) after the forward / reverse switching switch 17 is operated. The driving of the electric vehicle 1 by driving 9 is permitted.

  Next, with reference to FIG. 3, the driving | running | working permission determination operation | movement performed by the control part 100 which concerns on a present Example is demonstrated.

  As shown in FIG. 3, first, the control unit 100 determines whether the forward / reverse selector switch 17 is in the neutral position in step S <b> 11, and if not, sets the operation permission flag to off in step S <b> 17. In step S18, the travel prohibition is determined, and the current travel permission determination operation is terminated.

  When the forward / reverse selector switch 17 is in the neutral position in step S11, the control unit 100 determines in step S12 whether the forward / reverse selector switch 17 has been switched from the neutral position to the forward position, and from the neutral position to the forward position. Is switched to, the operation permission flag is set to ON in step S14.

  If the controller 100 determines in step S12 that the forward / reverse selector switch 17 has not been switched from the neutral position to the forward position, the controller 100 determines in step S13 whether the forward / reverse selector switch 17 has been switched from the neutral position to the reverse position. If the neutral position is switched to the reverse position, the operation permission flag is set to ON in step S14.

  That is, the control unit 100 sets the operation permission flag to ON when the forward / reverse switching switch 17 is switched from the neutral position to the forward position or the reverse position.

  After turning on the operation permission flag in step S14, the control unit 100 determines whether or not the operation of the accelerator lever 15 (hereinafter also referred to as an accelerator operation) is performed within a predetermined time in step S15. Here, the predetermined time is a time starting from when the operation permission flag is turned on based on switching of the forward / reverse selector switch 17, and is set to, for example, 2 to 3 seconds.

  If the accelerator lever 15 is not operated within the predetermined time in step S15, the control unit 100 determines to prohibit travel in step S18 and ends the current travel permission determination operation.

  On the other hand, when the accelerator lever 15 is operated within a predetermined time in step S15, the control unit 100 establishes the travel permission in step S16. Then, the control unit 100 drives the motor 9 according to the operation amount of the accelerator lever 15 and causes the electric vehicle 1 to travel.

  As described above, the control unit 100 permits the electric vehicle 1 to travel when both the forward / reverse switching switch 17 and the accelerator operation are performed, so that the traveling direction of the vehicle is intended by the driver. The vehicle always coincides with the direction, and the vehicle can be prevented from starting in a direction not intended by the driver. In addition, when the accelerator operation not intended by the driver is performed without operating the forward / reverse switching switch 17, the vehicle is prohibited from traveling, so that the vehicle can be prevented from starting due to the accelerator operation not intended by the driver.

  The forward / reverse selector switch 17 may be a switch that performs a two-position alternate operation that is operated to either the forward position or the reverse position. In this case, when the forward / reverse selector switch 17 is switched from one of the forward position and the reverse position to the other, or the forward / backward selector switch 17 is switched from one of the forward position and the reverse position to the other. If it is switched again to one later, the operation permission flag is turned ON.

  When the driver wants to move the electric vehicle 1 forward, the driver performs the operation of switching the forward / reverse switch 17 from the reverse position to the forward position, or the operation of switching from the forward position to the reverse position and then switching again to the forward position. By operating the lever 15, the electric vehicle 1 can travel in the forward direction.

  Further, when the driver wants to move the electric vehicle 1 backward, the driver performs an operation of switching the forward / reverse switching switch 17 from the forward movement position to the reverse movement position, or an operation of switching from the reverse movement position to the forward movement position and then switching to the reverse movement position again. By operating the accelerator lever 15, the electric vehicle 1 can travel in the reverse direction.

  Here, if the driver cancels the accelerator operation while the electric vehicle 1 is traveling after the travel permission is established in step S16, if the travel permission is canceled and the travel is prohibited, the driver In order to run 1 again, the forward / reverse selector switch 17 must be operated again, which complicates the operation.

  Therefore, even when the accelerator operation is canceled during the travel after the travel permission is established, the control unit 100, when the accelerator operation is performed again in a state where the predetermined travel permission continuation condition is satisfied, The travel permit is continued.

  In this embodiment, it is assumed that the travel permission continuation condition is within a predetermined permission continuation time (T1 in FIG. 4) after the accelerator operation is released.

  After executing step S16, the control unit 100 determines whether or not release of the accelerator operation is detected in step S19. If the accelerator operation is not released, the control unit 100 returns to step S16 to determine permission to travel. In other words, the control unit 100 determines to continue travel permission in step S16.

  When the accelerator operation is released in step S19, the control unit 100 determines in step S20 whether or not it is within a predetermined permission duration after the accelerator operation is released.

  When it determines with it being within permission continuation time by step S20, the control part 100 determines whether the accelerator operation was detected again by step 21. FIG.

  If the accelerator operation is not detected again in step S21, the control unit 100 returns to step S20. If the accelerator operation is detected again in step S21, the control unit 100 returns to step S16 and determines permission to travel. That is, in this embodiment, even when the accelerator operation is released, the travel permission is continued by performing the accelerator operation again within a predetermined permission duration after the accelerator operation is released.

  On the other hand, if it is determined in step S20 that it is not within the permission continuation time (the permission continuation time has elapsed), the control unit 100 determines to prohibit travel in step S18 and ends the current travel permission determination operation.

  With reference to the timing chart of FIG. 4, an example of the transition of the travel permission state when the travel permission determination operation of FIG. 3 is performed will be described. FIG. 4 shows the position of the forward / reverse selector switch 17, the state of the operation permission flag, the presence / absence of the accelerator operation, and the transition of the travel permission state.

  The period from time t0 to time t6 in FIG. 4 shows a case where travel permission is established and the electric vehicle 1 starts, and travel is prohibited due to continued release of the accelerator operation while the electric vehicle 1 is traveling. Yes.

  In FIG. 4, the electric vehicle 1 is stopped at time t0, and the operation permission flag is turned on when the forward / reverse selector switch 17 is operated at time t1. Then, the accelerator operation is performed at time t2 after time T0 has elapsed from time t1. In this case, since the accelerator operation is not performed within the time T0 after the operation permission flag is turned on, the travel is prohibited and the electric vehicle 1 cannot travel.

  Thereafter, the operation permission flag is turned on by operating the forward / reverse selector switch 17 at time t3. Then, the accelerator operation is performed at time t4 within time T0 from time t3. In this case, since the accelerator operation is performed within the time T0 after the operation permission flag is turned on, the travel permission is established and the electric vehicle 1 travels.

  Thereafter, the accelerator operation is released at time t5, and the accelerator operation remains released even at time t6 after the elapse of time T1 from time t5, so that traveling is prohibited at time t6.

  Further, during the period from time t7 to time t10 in FIG. 4, the travel permission is established and the electric vehicle 1 starts, and the accelerator operation is temporarily released while the electric vehicle 1 is traveling, but the travel permission is continued. Shows the case.

  In FIG. 4, the operation permission flag is turned on by operating the forward / reverse selector switch 17 at time t7. Then, the accelerator operation is performed at time t8 within time T0 from time t7. In this case, travel permission is established and the electric vehicle 1 travels.

  Thereafter, the accelerator operation is released at time t9, and the accelerator operation is performed again at time t10 within time T1 from time t9. For this reason, traveling permission is continued.

  As described above, in the electric vehicle 1 according to the present embodiment, the control unit 100 sets the motor 9 as a travel permission condition that the accelerator operation is performed within a predetermined time after the forward / reverse switching switch 17 is operated. The electric vehicle 1 is allowed to travel by driving.

  As a result, the travel of the electric vehicle 1 is permitted by performing both the operation of the forward / reverse selector switch 17 and the accelerator operation, and the electric vehicle 1 can start. For this reason, it is possible to prevent the traveling direction of the vehicle from coinciding with the direction intended by the driver and the vehicle from starting in a direction not intended by the driving vehicle. In addition, when the accelerator operation unintended by the driving vehicle is performed without operating the forward / reverse switching switch 17, the vehicle is prohibited from traveling, so that the start of the vehicle due to the accelerator operation not intended by the driver can be suppressed. Therefore, the start of the vehicle due to an accelerator operation not intended by the driver can be suppressed, and safety can be improved.

  Further, even when the accelerator operation is canceled during the traveling of the electric vehicle 1 after the travel permission condition is satisfied, the control unit 100 performs the accelerator operation again in a state where the predetermined travel permission continuation condition is satisfied. If yes, continue to permit travel. In this embodiment, the travel permission continuation condition is within a predetermined permission continuation time after the accelerator operation is released.

  As a result, even if the accelerator operation is canceled while the electric vehicle 1 is traveling, the travel permission is continued by performing the accelerator operation again within the permitted duration after the accelerator operation is canceled. Therefore, there is no need to operate the forward / reverse selector switch 17 in order to establish travel permission, and operability can be improved.

  As a result, the start of the vehicle due to the accelerator operation not intended by the driver can be suppressed, and the operability can be improved.

  An accelerator device for an electric vehicle according to a second embodiment of the present invention will be described with reference to the drawings. The second embodiment is different from the first embodiment in the travel permission continuation condition in the travel permission determination operation. In the present embodiment, the travel permission continuation condition is that the vehicle speed is equal to or higher than a predetermined vehicle speed. With reference to FIG. 5, the driving | running | working permission determination operation | movement performed by the control part 100 which concerns on a present Example is demonstrated.

  As shown in FIG. 5, first, the control unit 100 determines whether the forward / reverse selector switch 17 is in the neutral position in step S31, and if not, sets the operation permission flag to off in step S37. In step S38, the travel prohibition is determined, and the current travel permission determination operation is terminated.

  If the forward / reverse selector switch 17 is in the neutral position in step S31, the controller 100 determines in step S32 whether or not the forward / reverse selector switch 17 has been switched from the neutral position to the forward position. In the case of switching to, the operation permission flag is set to ON in step S34.

  If the controller 100 determines in step S32 that the forward / reverse selector switch 17 has not been switched from the neutral position to the forward position, the controller 100 determines in step S33 whether the forward / reverse selector switch 17 has been switched from the neutral position to the reverse position. If the neutral position is switched to the reverse position, the operation permission flag is set to ON in step S34.

  That is, the control unit 100 sets the operation permission flag to ON when the forward / reverse switching switch 17 is switched from the neutral position to the forward position or the reverse position.

  After turning on the operation permission flag in Step S34, the control unit 100 determines whether or not the operation of the accelerator lever 15 (hereinafter also referred to as an accelerator operation) is performed within a predetermined time in Step S35. Here, the predetermined time is a time starting from when the operation permission flag is turned on based on switching of the forward / reverse selector switch 17, and is set to, for example, 2 to 3 seconds.

  If the accelerator lever 15 is not operated within the predetermined time in step S35, the control unit 100 determines to prohibit travel in step S38 and ends the current travel permission determination operation.

  On the other hand, when the accelerator lever 15 is operated within a predetermined time in step S35, the control unit 100 determines the travel permission in step S36. Then, the control unit 100 drives the motor 9 according to the operation amount of the accelerator lever 15 and causes the electric vehicle 1 to travel.

  After execution of step S36, the control unit 100 determines whether or not release of the accelerator operation is detected in step S39. If the accelerator operation is not released, the control unit 100 determines travel permission in step S42. In other words, the control unit 100 determines to continue travel permission in step S42.

  When the accelerator operation is released in step S39, the control unit 100 determines in step S40 whether the vehicle speed is equal to or higher than a predetermined vehicle speed.

  When it is determined in step S40 that the vehicle speed is equal to or higher than the predetermined vehicle speed, the control unit 100 determines whether or not the accelerator operation is detected again in step S41.

  When the control unit 100 detects the accelerator operation again in step S41, the control unit 100 determines the travel permission in step S42. That is, in this embodiment, even when the accelerator operation is released, the travel permission is continued by performing the accelerator operation again in a state where the vehicle speed is equal to or higher than the predetermined vehicle speed. The predetermined vehicle speed is preferably set to be slightly higher than the stopped state of the electric vehicle 1 (vehicle speed is 0 km / h). By doing in this way, if it is between the cancellation | release of accelerator operation and the electric vehicle 1 stops, driving | running | working permission will be continued by performing accelerator operation again.

  On the other hand, when it is determined in step S40 that the vehicle speed is less than the predetermined vehicle speed, the control unit 100 determines to prohibit travel in step S38 and ends the current travel permission determination operation. If the accelerator operation is not detected again in step S41, the control unit 100 determines to prohibit travel in step S38 and ends the current travel permission determination operation.

  As described above, in the electric vehicle 1 according to the present embodiment, the control unit 100 sets the motor 9 as a travel permission condition that the accelerator operation is performed within a predetermined time after the forward / reverse switching switch 17 is operated. The electric vehicle 1 is allowed to travel by driving.

  Thereby, the start of the vehicle by the accelerator operation not intended by the driver can be suppressed, and the safety can be improved.

  In addition, even when the accelerator operation is released during the traveling of the electric vehicle 1 after the travel permission condition is satisfied, the control unit 100, when the accelerator operation is performed again in a state where the vehicle speed is equal to or higher than the predetermined vehicle speed, Continue driving permission.

  As a result, even if the accelerator operation is canceled while the electric vehicle 1 is traveling, if the vehicle speed is equal to or higher than the predetermined vehicle speed, the accelerator operation is performed again to continue the travel permission. Therefore, it is not necessary to operate the forward / reverse selector switch 17 in order to establish the above, and the operability can be improved.

  As a result, the start of the vehicle due to the accelerator operation not intended by the driver can be suppressed, and the operability can be improved.

  An accelerator device for an electric vehicle according to a third embodiment of the present invention will be described with reference to the drawings. The third embodiment is different from the first and second embodiments in the travel permission continuation condition in the travel permission determination operation. In the present embodiment, the travel permission continuation condition is that the brake is not operating. With reference to FIG. 6, the driving | running | working permission determination operation | movement performed by the control part 100 which concerns on a present Example is demonstrated.

  As shown in FIG. 6, first, the control unit 100 determines whether the forward / reverse selector switch 17 is in the neutral position in step S51, and if not, sets the operation permission flag to off in step S57. In step S58, the travel prohibition is determined, and the current travel permission determination operation is terminated.

  When the forward / reverse selector switch 17 is in the neutral position in step S51, the controller 100 determines in step S52 whether or not the forward / reverse selector switch 17 has been switched from the neutral position to the forward position, and from the neutral position to the forward position. Is switched to, the operation permission flag is set to ON in step S54.

  If the controller 100 determines in step S52 that the forward / reverse selector switch 17 has not been switched from the neutral position to the forward position, the controller 100 determines in step S53 whether or not the forward / reverse selector switch 17 has been switched from the neutral position to the reverse position. If the neutral position is switched to the reverse position, the operation permission flag is set to ON in step S54.

  That is, the control unit 100 sets the operation permission flag to ON when the forward / reverse switching switch 17 is switched from the neutral position to the forward position or the reverse position.

  After turning on the operation permission flag in step S54, the control unit 100 determines in step S55 whether or not an operation of the accelerator lever 15 (hereinafter also referred to as an accelerator operation) has been performed within a predetermined time. Here, the predetermined time is a time starting from when the operation permission flag is turned on based on switching of the forward / reverse selector switch 17, and is set to, for example, 2 to 3 seconds.

  If the accelerator lever 15 is not operated within the predetermined time in step S55, the control unit 100 determines to prohibit travel in step S58 and ends the current travel permission determination operation.

  On the other hand, when the accelerator lever 15 is operated within a predetermined time in step S55, the control unit 100 determines the travel permission in step S56. Then, the control unit 100 drives the motor 9 according to the operation amount of the accelerator lever 15 and causes the electric vehicle 1 to travel.

  After execution of step S56, the control unit 100 determines whether or not release of the accelerator operation is detected in step S59. If the accelerator operation is not released, the control unit 100 determines travel permission in step S62. In other words, the control unit 100 determines to continue travel permission in step S62.

  When the accelerator operation is released in step S59, the control unit 100 determines in step S60 whether the brake is not operating. Here, the control unit 100 determines whether or not the electromagnetic brake is activated. Note that the electromagnetic brake does not operate simultaneously with the release of the accelerator operation. The electromagnetic brake operates after an idle period after the accelerator operation is released.

  When it is determined in step S60 that the brake is not operating, the control unit 100 determines whether or not the accelerator operation is detected again in step S61.

  When the control unit 100 detects the accelerator operation again in step S61, the control unit 100 determines the travel permission in step S62. That is, in this embodiment, even when the accelerator operation is released, the travel permission is continued by performing the accelerator operation again in a state where the brake is not operated.

  On the other hand, when it determines with the brake operating at step S60, the control part 100 determines driving | running | working prohibition at step S58, and complete | finishes this driving | running | working permission determination operation | movement. If the accelerator operation is not detected again in step S61, the control unit 100 determines to prohibit travel in step S58, and ends the current travel permission determination operation.

  As described above, in the electric vehicle 1 according to the present embodiment, the control unit 100 sets the motor 9 as a travel permission condition that the accelerator operation is performed within a predetermined time after the forward / reverse switching switch 17 is operated. The electric vehicle 1 is allowed to travel by driving.

  Thereby, the start of the vehicle by the accelerator operation not intended by the driver can be suppressed, and the safety can be improved.

  In addition, even when the accelerator operation is released during the traveling of the electric vehicle 1 after the travel permission condition is satisfied, the control unit 100, when the accelerator operation is performed again without the brake being applied, Continue driving permission.

  As a result, even if the accelerator operation is released while the electric vehicle 1 is traveling, the travel permission is continued by performing the accelerator operation again if the brake is not in operation. Therefore, it is not necessary to operate the forward / reverse selector switch 17 in order to establish the above, and the operability can be improved.

  As a result, the start of the vehicle due to the accelerator operation not intended by the driver can be suppressed, and the operability can be improved.

  While embodiments of the invention have been disclosed, it will be apparent to those skilled in the art that changes may be made without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

1 Electric Vehicle 9 Motor 15 Accelerator Lever (Accelerator Operation Section)
17 Forward / reverse selector switch (forward / reverse selector)
100 control unit

Claims (4)

A forward / reverse switching operation section for switching the traveling direction of the electric vehicle to forward or reverse;
An accelerator operation unit that performs an accelerator operation in the traveling direction switched by the forward / reverse switching operation unit;
An accelerator device for an electric vehicle having a motor driven based on an operation of the accelerator operation unit,
A controller for permitting the traveling of the electric vehicle by driving the motor, with a travel permission condition that the accelerator operation is performed within a predetermined time after the forward / reverse switching operation unit is operated;
The control unit performs the accelerator operation in a state where a predetermined travel permission continuation condition is satisfied even when the accelerator operation is released during the traveling of the electric vehicle after the travel permission condition is satisfied. An accelerator device for an electric vehicle, characterized in that the travel permission is continued when it is performed again.   The accelerator apparatus for an electric vehicle according to claim 1, wherein the travel permission continuation condition is within a predetermined permission continuation time after the accelerator operation is released.   The accelerator device for an electric vehicle according to claim 1, wherein the travel permission continuation condition is that a vehicle speed is equal to or higher than a predetermined vehicle speed.   The accelerator device for an electric vehicle according to claim 1, wherein the travel permission continuation condition is that a brake is not activated.