JP2010208413A - Emergency stop mechanism for electric vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable an emergency stop of an electric vehicle in the case that an accelerator lever is erroneously pulled toward an operating handle side. <P>SOLUTION: A turning shaft pin 37 is installed at a mechanical chassis 36. A switch box plate 35 is provided with a first spring 41 inserted into the turning shaft pin, having holes of the turning shaft extending in a forward or rearward direction of a vehicle arranged at central positions in a width direction of the vehicle and biasing the mechanical chassis at the central positions in the width direction of the vehicle in respect to the switch box plate, and a second spring 42 for biasing the mechanical chassis against the switch box plate in a forward direction of the vehicle. When one of the left side and the right side of the accelerator lever 33 pivotally supported at the mechanical chassis is pulled toward an operating handle 32 side, the mechanical chassis is turned left or right around a fulcrum point of the turning shaft pin 37 and when both the left side and the right side of the accelerator lever are pulled simultaneously toward the operating handle side, the mechanical chassis is moved in the rearward direction of the vehicle. In these cases, the vehicle is stopped urgently. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an emergency stop mechanism for a three-wheeled or four-wheeled electric vehicle, particularly for use by an elderly person or a person who is physically disabled.

  This type of small electric vehicle is called a “Senior Car” (registered trademark) or the like, and has extremely high utility value as a substitute for elderly people. In such a small electric vehicle, an electric motor and a battery are mounted on a vehicle body frame to which a wheel and a seat on which a driver is seated are mounted, and the wheel is driven by the electric motor.

  In addition, a floor for a passenger to put his / her foot on is provided in front of the seat, and a steering shaft for steering the front wheels is further provided in front of the floor. An operation handle is attached to the upper end of the steering shaft, and an accelerator lever is disposed near the operation handle. The driver is seated on the seat and operates the operation handle and the accelerator lever to drive the vehicle.

  By the way, when driving with the accelerator lever pressed down, in an emergency where an obstacle suddenly appears ahead, the driver may cause an erroneous operation that strongly pulls the accelerator lever toward the operation handle as a habit . A mechanism capable of urgently stopping the vehicle by this erroneous operation is demanded, and such a mechanism is disclosed in Patent Document 1.

  In the small electric vehicle described in Patent Document 1, a rod-shaped intermediate portion extending in the vehicle width direction is fitted to the left and right cutout portions of the support bracket, and this intermediate portion is elastically supported by the left and right springs. An accelerator lever operation portion is provided at the right end and the left end of the intermediate portion. The vehicle speed increases when the operation unit is pushed down.

  For example, when the left accelerator lever operation part is pulled toward the grip part of the steering handle due to the above-mentioned erroneous operation by the driver, the middle part (accelerator lever) resists the biasing force of the left spring, and the right notch The inclination is detected by the limit switch type detecting means, and the vehicle is urgently stopped based on the detection signal.

JP-A-5-338475

  However, in the small electric vehicle described in Patent Document 1, the accelerator lever may move in the notch portion of the support bracket in the longitudinal direction of the vehicle within the range where the limit switch type detection means does not operate due to vehicle vibration during normal traveling. is there. In this case, the above-described movement of the accelerator lever is transmitted to the potentiometer fixed to the support bracket via the link member, and the vehicle speed may fluctuate.

  Further, since the accelerator lever is disposed in the notch portion of the support bracket and the accelerator lever abuts against the end surface of the notch portion by the biasing force of the spring, the surface pressure acting on the accelerator lever or the like is increased. For this reason, durability of the bearing part of an accelerator lever will fall.

  An object of the present invention has been made in consideration of the above-described circumstances, and is an electric motor that can reliably stop the vehicle in an emergency when the accelerator lever is pulled to the operation handle side by one or both hands due to an erroneous operation. It is to provide an emergency stop mechanism for a vehicle.

  In the present invention, operation handles are attached to both sides of a base plate connected to a steering shaft, and a movable plate is provided on the base plate so as to be movable in the vehicle longitudinal direction and rotatable in the vehicle width direction. The accelerator lever extending in the vehicle width direction is rotatably supported, and the vehicle speed is changed by rotating the accelerator lever, and when the accelerator lever is pulled toward the operation handle due to an erroneous operation, An emergency stop mechanism for an electric vehicle that moves a movable plate and detects the movement of the movable plate by a switch means to stop the vehicle urgently, and includes a rotation shaft pin on one of the base plate and the movable plate, and the other In addition, an elongated hole-shaped rotation shaft hole that is inserted into the rotation shaft pin and extends in the vehicle front-rear direction, A first spring that is provided at a central position in the vehicle width direction of both plates, and urges the movable plate to a central position in the vehicle width direction with respect to the base plate between the base plate and the movable plate; A second spring for urging the plate forward of the vehicle with respect to the base plate, and when the left or right side of the accelerator lever is pulled toward the operation handle, the movable plate is moved to the rotating shaft. The movable plate is configured to move to the rear of the vehicle when the pin is pivoted left or right and the left and right sides of the accelerator lever are simultaneously pulled toward the operation handle. It is a feature.

  According to the present invention, when one or both of the left and right sides of the accelerator lever are pulled toward the operation handle, the movable plate moves, and this movement is detected by the switch means, so that the vehicle is urgently stopped. If the accelerator lever is pulled to the operation handle side by one or both hands due to an erroneous operation, the vehicle can be surely stopped in an emergency.

The right view which shows the small electric vehicle to which one Embodiment in the emergency stop mechanism of the electric vehicle which concerns on this invention was applied. The front view which shows the small electric vehicle of FIG. The top view which shows the small electric vehicle of FIG. The front view which shows the accelerator apparatus provided with the emergency stop mechanism in the switch box of FIG. The rear view of the accelerator apparatus of FIG. FIG. The front view which expands and shows the principal part of FIG. The disassembled perspective view of the accelerator apparatus of FIG. The top view which shows the switch box plate of FIG. The top view which shows the micro switch for emergency stop of FIG. 4, and a sensor cam. Sectional drawing which shows the XI part of FIG. FIG. 10 is a plan view showing a rotation restricting hole of FIG. 9.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a right side view showing a small electric vehicle to which an embodiment of an emergency stop mechanism for an electric vehicle according to the present invention is applied.

  As shown in FIGS. 1 to 3, in a small electric vehicle 10 as an electric vehicle, a pair of left and right front wheels 12 and a rear wheel 13 are supported on a body frame 11 via a suspension (not shown). The vehicle body frame 11 is covered with a resin cover including a front cover 14, a leg shield 15, a floor 16, a rear cover 17 and the like except for a part thereof.

  A substantially box-shaped rear cover 17 projects upward at the rear of the vehicle body, and an electric motor 18 (FIG. 3) for driving the rear wheel 10 is provided on the inner side of the rear cover 17, and the output of the electric motor 18 is an axle. A power unit including a gear unit 20 that transmits to 19 and a battery (not shown) is accommodated. This power unit is controlled by the controller 28.

  A seat 22 on which a passenger sits is mounted above the rear cover 17 via a bracket 21 that rises from the body frame 11 in a gate shape, for example. The seat 22 includes a seat cushion 23 and a seat back (backrest) 24, and is supported on the rear cover 17 so as to be turnable in the horizontal direction. The turning angle of the seat 22 is set to, for example, 45 degrees, 90 degrees, and the like from the front position of the seat to the left and right. The seat 22 is appropriately turned by a turning lever 25 attached to the side portion of the seat cushion 23. Further, armrests 26 are provided on both sides of the seat back 24, and each armrest 26 is supported so as to be rotatable around a fulcrum 27.

  The leg shield 15 protrudes upward at the front of the vehicle body and protects the legs of the occupant seated on the seat 12 from being exposed to wind or the like. A steering shaft 29 for steering the front wheels 12 is erected inside the leg shield 15, and a handle unit 30 is attached to the upper end of the steering shaft 29. As shown in FIG. 1, the driver steers the front wheel 12 by sitting on the seat 22 and rotating the handle unit 30 left and right.

  The handle unit 30 is provided with semicircular operation handles 32 on both the left and right sides of the switch box 31, an accelerator lever 33 protruding, and an accelerator device 34 (FIG. 4) accommodated in the switch box 31. Composed. The switch box 31 is equipped with switches such as a power switch, a maximum speed setting switch, and a forward / reverse selector switch.

  As shown in FIGS. 4, 7, and 8, the accelerator device 34 includes a switch box plate 35 as a base plate, a mechanical chassis 36 as a movable plate, a rotation shaft pin 37, a rotation restriction pin 38, and a first spring 41. And a second spring 42, a potentiometer 39 as an accelerator opening sensor, an emergency stop micro switch 40 as a switch means, and a sensor cam 54.

  As shown in FIGS. 4 to 6, the switch box plate 35 is connected to the upper end portion of the steering shaft 29 in a rotationally integrated manner, and semicircular operation handles 32 are attached to the left and right sides, respectively. As shown in FIG. 7, FIG. 8, and FIG. 9, a rotating shaft pin 37 projects from one of the switch box plate 35 and the mechanical chassis 36 (in this embodiment, the mechanical chassis 36), and the other (in this embodiment). Then, a rotation shaft hole 43 is formed in the switch box plate 35). The rotation shaft pin 37 is provided at the center position in the vehicle width direction of the mechanical chassis 36, and the rotation shaft hole 43 is formed at the center position in the vehicle width direction of the switch box plate 35. The rotation shaft hole 43 has a long hole shape extending in the vehicle front-rear direction.

  The rotation shaft pin 37 of the mechanical chassis 36 is inserted into the rotation shaft hole 43 of the switch box plate 35, a washer 44 (FIG. 5) is inserted into the tip of the rotation shaft pin 37, and the nut 45 is screwed. Thus, as shown in FIG. 4, the mechanical chassis 36 is configured to be rotatable in the vehicle width direction (left-right direction) with respect to the switch box plate 35 and linearly movable in the vehicle front-rear direction. A movable stroke in the vehicle front-rear direction with respect to the switch box plate 35 of the mechanical chassis 36 is defined by the longitudinal dimension of the rotation shaft hole 43.

  As shown in FIGS. 7, 8, and 9, a rotation restricting pin 38 protrudes from one of the switch box plate 35 and the mechanical chassis 36 (the mechanical chassis 36 in the present embodiment), and the other (the present embodiment). Then, a rotation restricting hole 46 is formed in the switch box plate 35). The rotation restricting pin 38 is disposed at the center position in the vehicle width direction of the switch box plate 36 and aligned with the rotation shaft pin 37 in the vehicle front-rear direction, for example, in front of the rotation shaft pin 37. The rotation restricting hole 46 is formed at the center position in the vehicle width direction of the switch box plate 35 and aligned with the rotating shaft hole 43 in the vehicle front-rear direction, for example, in front of the rotating shaft hole 43.

  The rotation restriction hole 46 is formed to have a larger diameter than the rotation restriction pin 38. Accordingly, the rotation restricting pin 38 of the mechanical chassis 36 is inserted into the rotation restricting hole 46 of the switch box plate 35, and the washer 44 (FIG. 5) is inserted into the tip of the rotation restricting pin 38, and the nut 45 is screwed. Thus, as shown in FIG. 4, a pivotable angle in the vehicle width direction (left-right direction) with respect to the switch box plate 35 of the mechanical chassis 36 is defined.

  As shown in FIGS. 5 and 8, the first spring 41 and the second spring 42 are provided between the switch box plate 35 and the mechanical chassis 36. That is, the first spring 41 is, for example, a leaf spring provided with the protruding portion 41 </ b> A, and is installed on the switch box plate 35. The protrusion 41A of the first spring 41 is located at the center of the switch box plate 35 in the vehicle width direction, and is engaged with an engagement groove 47 formed at the front end of the mechanical chassis 36 as shown in FIGS. Match. As a result, the mechanical chassis 36 is configured to be pivotable about the pivot shaft pin 37 with respect to the switch box plate 35, but is configured to be held at the center position in the vehicle width direction of the switch box plate 35.

  The second spring 42 is, for example, a tension coil spring, as shown in FIGS. 5 and 8. One end of the second spring 42 is locked to the back surface of the switch box plate 35, and the other end is a front end convex portion 48 of the mechanical chassis 36. It is locked to. Accordingly, the mechanical chassis 36 is urged toward the vehicle front direction with respect to the switch box plate 35.

  As shown in FIGS. 4 and 7, the accelerator lever 33 is bent in a crank shape on both sides from the rotating shaft portion 49 in the central portion in the axial direction and extends in the vehicle width direction, and the operation portions 50 are provided at both tip portions. . The rotation shaft portion 49 of the accelerator lever 33 is rotatably supported by the mechanical chassis 36 using the bearing bracket 58, and at this time, the entire circumference of the rotation shaft portion 49 contacts the mechanical chassis 36 and the bearing bracket 35.

  Further, in the accelerator lever 33, the rotation shaft portion 49 is disposed in the vicinity of the rotation shaft pin 37, and the operation portion 50 reaches the vicinity of the grip portion 51 of the operation handle 32. The accelerator lever 33 is urged to rotate in the direction of the initial position shown by the solid line in FIG. The initial position of the accelerator lever 33 is set at a position lower than the upper surface of the operation handle 32, and an inadvertent rotation operation by the driver is prevented.

  As shown in FIGS. 4, 7, and 8, the potentiometer 39 is installed in the mechanical chassis 36. A drive gear 52 is integrally attached to the rotating shaft portion 49 of the accelerator lever 33, and the drive gear 52 meshes with a driven gear 53 attached to the shaft of the potentiometer 39. Accordingly, the rotation of the accelerator lever 33 is transmitted to the potentiometer 39 via the drive gear 52 and the driven gear 53, and the potentiometer 39 sends an accelerator opening signal corresponding to the rotation amount of the accelerator lever 33 to the controller 28 (FIG. 3). Output. The controller 28 supplies electric power corresponding to the accelerator opening signal to the electric motor 18 to control the vehicle speed.

  In the present embodiment, as shown in FIG. 4, the driver rotates the operation portion 50 of the accelerator lever 33 downward and rearward (in the direction of arrow P in FIG. 6) using the left hand LH and / or the right hand RH. The speed is increased and the vehicle speed is set to decrease by rotating upward and forward. Further, when the driver releases the left hand LH and the right hand RH from the operation unit 50 of the accelerator lever 33, an electromagnetic brake (not shown) disposed between the electric motor 18 and the gear unit 20 of FIG. Is configured to decelerate and stop.

  As shown in FIGS. 4 and 7, the emergency stop macro switch 40 outputs a signal for emergency stop of the vehicle in cooperation with the sensor cam 54, and the emergency stop macro switch 40 is connected to the mechanical chassis 36. The sensor cam 54 is installed on the switch box plate 35. The sensor cam 54 is provided with a cam surface 55 on the front end side, and the cam surface 55 is substantially V-shaped in a plan view as shown in FIG. 10 and is located at a front center outside in the vehicle width direction (that is, the cam surface bottom 55A). It has the inclined cam surface 55B inclined toward the direction. The contactor 57 attached to the lever 56 of the emergency stop macro switch 40 normally contacts the cam surface bottom 55A of the cam surface 55 of the sensor cam 54, so that the lever 56 is released and the emergency stop macro switch 40 is released. The contact (not shown) is in an OFF state.

  However, as shown in FIG. 4, the left or right operation portion 50 of the accelerator lever 33 is strongly pulled toward the grip portion 51 side of the operation handle 32 by the driver's erroneous operation, and the first spring 41 (FIG. 8) is pulled. When the mechanical chassis 36 is rotated leftward or rightward with the rotation shaft pin 37 as a fulcrum against the urging force, the contact 57 of the emergency stop Macross switch 40 installed on the mechanical chassis 36 is connected to the sensor cam. 54, the lever 56 is bent and deformed, and the emergency stop Macross switch 40 is turned on. As a result, the emergency stop Macross switch 40 detects the movement (rotation) of the mechanical chassis 36 and outputs a detection signal to the controller 28 (FIG. 3). Based on this detection signal, the controller 28 cuts off the power supply to the electric motor 18 and stops the vehicle urgently.

  Further, as shown in FIG. 4, both the left and right operation portions 50 of the accelerator lever 33 are strongly drawn toward the grip portion 51 side of the operation handle 32 due to an erroneous operation by the driver, and the biasing force of the second spring 42 is exerted. On the other hand, when the mechanical chassis 36 linearly moves rearward of the vehicle, the contact 57 of the emergency stop Macross switch 40 installed in the mechanical chassis 36 is positioned on the cam surface bottom 55A (FIG. 10) of the sensor cam 54. The lever 56 is bent and deformed, and the emergency stop microphone switch 40 is turned on. As a result, the emergency stop microphone switch 40 detects the movement of the mechanical chassis 36 (linear movement backward), and outputs a detection signal to the controller 28 (FIG. 3). Also in this case, the controller 28 cuts off the power supply to the electric motor 18 based on this detection signal, and stops the vehicle urgently.

  Here, as shown in FIGS. 7, 8 and 11, the mechanical chassis 36 has a plurality of embosses 60 projecting toward the switch box plate 35 on the surface 59 facing the switch box plate 35 (this embodiment). In this embodiment, three points arranged in a triangle are provided in the vicinity of one point in the vehicle width direction in front of the rotation restricting pin 38 and a pair of left and right bearing brackets 58 that support the accelerator lever 33. These embosses 60 come into contact with the switch box plate 35.

  9 and 12, the rotation restricting hole 46 is formed to have a larger diameter than the rotation restricting pin 38, and the rotation restricting when the mechanical chassis 36 is at the center position in the vehicle width direction. A step portion 61 is provided as holding means for holding the position of the pin 38. That is, on the inner peripheral surface of the rotation restricting hole 46, the position of the rotation restricting pin 38 when the mechanical chassis 36 is at the center position in the vehicle width direction (the two-dot chain line position in FIG. 12), and the mechanical chassis 36 on the left Alternatively, a stepped portion 61 is formed projecting outward between the position of the rotation restricting pin 38 when it is rotated rightward (the one-dot chain line position in FIG. 2). The rotation restricting pin 38 when the mechanical chassis 36 is at the center position in the vehicle width direction is held at that position by being engaged with the stepped portion 61. Therefore, the mechanical chassis 36 is normally held at the center position in the vehicle width direction by the engagement between the rotation restricting pin 38 and the stepped portion 61 and the urging force of the first spring 41.

  With the configuration as described above, the following effects (1) to (12) are achieved according to the present embodiment.

  (1) When one or both of the left and right operation portions 50 of the accelerator lever 33 are strongly pulled toward the operation handle 32 side, the mechanical chassis 36 moves (rotates around the rotation shaft pin 37 or moves linearly). This movement is detected by the emergency stop microphone switch 40, and the vehicle is emergency stopped. Therefore, when the driver strongly pulls the accelerator lever 33 toward the operation handle 32 side with one hand or both hands. The vehicle can be stopped urgently with certainty.

  (2) Since the mechanical chassis 36 is rotated around the switch box plate 35 and the rotation shaft pin 37 installed at the center position in the vehicle width direction of the mechanical chassis 36, the left or right operation portion of the accelerator lever 33 The rotational resistance when pulling one side of 50 toward the operation handle 32 can be reduced, and the operational feeling can be improved.

  (3) When one of the left and right operation portions 50 of the accelerator lever 33 is strongly pulled toward the operation handle 32, the mechanical chassis 36 resists the urging force of the first spring 41 around the rotation shaft pin 37. Is rotated. Further, when both the left and right operation portions 50 of the accelerator lever 33 are strongly pulled toward the operation handle 32, the mechanical chassis 36 is moved linearly against the urging force of the second spring 42 toward the rear of the vehicle. . Therefore, in order to adjust the rotation start timing of the mechanical chassis 36, the spring load of the first spring 41 is changed, and in order to adjust the linear movement start timing of the mechanical chassis 36, the spring load of the second spring 42 is changed. These changes can be made individually because they only need to be changed.

  (4) Since the rotation shaft pin 37 and the rotation restriction pin 38 for attaching the mechanical chassis 36 to the switch box plate 35 are arranged side by side in the vehicle front-rear direction of the mechanical chassis 36, the left and right operations of the accelerator lever 33 are performed. It is possible to reliably prevent the front side of the mechanical chassis 36 from being lifted when both the parts 50 are strongly pulled toward the operation handle 32 side.

  (5) Since the rotation shaft pin 37 is disposed in the vicinity of the rotation shaft portion 49 of the accelerator lever 33, when one of the left or right operation portion 50 of the accelerator lever 33 is strongly pulled toward the operation handle 32 side. The distance between the operating portion 50 of the accelerator lever 33 pushed downward and the rotation shaft pin 37 can be set short. As a result, the amount of rotation of the mechanical chassis 36 using the rotation shaft pin 37 as a fulcrum can be reduced, and the operational feeling can be improved.

  (6) Since a plurality of embosses 60 that contact the switch box plate 35 are formed on the surface facing the switch box plate 35 in the mechanical chassis 36, the contact resistance between the mechanical chassis 36 and the switch box plate 35 is reduced. Can be reduced. For this reason, the mechanical chassis 36 can be smoothly moved with respect to the switch box plate 35 against the biasing force of the first spring 41 and the second spring 42, and the movement of the mechanical chassis 36 is stabilized and the operation thereof is performed. A feeling can be improved.

  (7) The rotation restriction hole 46 of the switch box plate 35 is formed with a step portion 61 that engages with the rotation restriction pin 38 when the mechanical chassis 36 is at the center position in the vehicle width direction. The mechanical chassis 36 is held at the center in the vehicle width direction by the engagement of the 38 with the stepped portion 61 and the biasing force of the first spring 41. Therefore, the mechanical chassis 36 can be positioned at the center position in the vehicle width direction with a simple structure, and the vehicle is inadvertently stopped urgently in cases other than when the accelerator lever 33 is strongly pulled toward the operation handle 32 by an erroneous operation. Can be prevented.

  (8) Since the potentiometer 39 and the emergency stop microphone switch 40 to which the signal lines are respectively extended are installed in the mechanical chassis 36 which is the same member, the potentiometer 39 and the emergency stop microphone switch 40 are connected to the mechanical chassis 36. It can be assembled in advance, and the assembly of the accelerator device 34 can be improved.

  (9) Since the accelerator lever 33 is disposed at a position lower than the operation handle 32, the driver is not prepared for the accelerator lever 33 when the driver moves up and down the small electric vehicle 10 whose power switch is turned on. It is possible to prevent the vehicle from starting from being in contact with the vehicle.

  (10) The lever 56 of the emergency stop microphone switch 40 is not bent and deformed except when the accelerator lever 33 is strongly pulled toward the operation handle 32 by an erroneous operation, and is in a released state. .

  (11) Since the accelerator lever 33 is pivotally supported by the mechanical chassis 36 which moves when the accelerator lever 33 is strongly pulled toward the operation handle 32 due to an erroneous operation, and the potentiometer 39 is installed, the small electric vehicle 10 normally travels. Even when the mechanical chassis 36 is sometimes moved due to vehicle vibration, the accelerator lever 33 and the potentiometer 39 are not operated by this, and as a result, the vehicle speed can be stabilized.

  (12) Since the accelerator lever 33 is supported by the mechanical chassis 36 and the bearing bracket 58 in contact with the entire circumference, the surface pressure acting on the accelerator lever 33, the mechanical chassis 36 and the bearing bracket 58 can be reduced, and the bearing bracket can be reduced. The durability of the bearing structure of the accelerator lever 33 including 58 can be improved.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this. For example, in the present embodiment, the case has been described in which the vehicle speed is increased by pushing the accelerator lever 33 downward and rearward. However, even if the vehicle speed is increased by pushing the accelerator lever 33 upward and forward. Good. In this case, even if the driver carelessly contacts the accelerator lever 33 when the driver moves up and down on the small electric vehicle 10 whose power switch is turned on, it is possible to further suppress the vehicle from starting.

  In the present embodiment, the case where the present invention is applied to a small electric vehicle called a senior car has been described. However, the present invention is applied to an electrically driven electric bicycle, an electric motorcycle, an electric snow vehicle, and the like. May be.

DESCRIPTION OF SYMBOLS 10 Small electric vehicle 18 Electric motor 29 Steering shaft 32 Operation handle 33 Accelerator lever 34 Accelerator apparatus 35 Switch box plate (base plate)
36 Mechanical chassis (movable plate)
37 Rotating shaft pin 38 Rotating restriction pin 39 Potentiometer (accelerator opening sensor)
40 Micro switch for emergency stop (switch means)
41 First spring 42 Second spring 43 Rotating shaft hole 46 Rotation restricting hole 49 Rotating shaft portion 50 Operation portion 54 Sensor cam 55 Cam surface 59 Opposing surface 60 Emboss 61 Stepped portion

Claims (8)

Operation handles are attached to both sides of the base plate connected to the steering shaft, and a movable plate is provided on the base plate so as to be movable in the vehicle longitudinal direction and rotatable in the vehicle width direction. The accelerator lever that extends to is rotatably supported
By rotating the accelerator lever, the vehicle speed is changed, and the movable plate moves when the accelerator lever is pulled toward the operation handle due to an erroneous operation. An emergency stop mechanism for an electric vehicle that is detected and emergency stop the vehicle,
One of the base plate and the movable plate has a rotation shaft pin, and the other has a long rotation shaft hole inserted in the rotation shaft pin and extending in the vehicle front-rear direction. Provided together in position,
Between the base plate and the movable plate, a first spring for biasing the movable plate to the center position in the vehicle width direction with respect to the base plate, and a first spring for biasing the movable plate to the front of the vehicle with respect to the base plate. 2 springs are provided,
When one of the left and right sides of the accelerator lever is pulled toward the operation handle side, the movable plate rotates left or right with the rotation shaft pin as a fulcrum, and the left and right sides of the accelerator lever An emergency stop mechanism for an electric vehicle, wherein the movable plate is configured to move toward the rear of the vehicle when both are pulled toward the operation handle at the same time. A rotation restriction pin is provided on one of the base plate and the movable plate, and a rotation restriction hole inserted into the rotation restriction pin and restricts the rotation position of the rotation plate. 2. The emergency stop mechanism for an electric vehicle according to claim 1, wherein the emergency stop mechanism of the electric vehicle according to claim 1, wherein the emergency stop mechanism is provided in the center in the width direction so as to be aligned in the vehicle front-rear direction with respect to the rotation shaft pin and the rotation shaft hole. 2. The emergency stop mechanism for an electric vehicle according to claim 1, wherein the rotation shaft pin is disposed in the vicinity of a rotation shaft of an accelerator lever on the movable plate. The rotation restriction hole is formed with a diameter larger than that of the rotation restriction pin, and includes a holding means for holding the position of the rotation restriction pin when the movable plate is at the center position in the vehicle width direction. The emergency stop mechanism for an electric vehicle according to claim 2. The holding means is configured so that, on the inner peripheral surface of the rotation restricting hole, the position of the rotation restricting pin at the center position in the vehicle width direction of the movable plate and the rotation at the position where the movable plate is rotated left or right. 5. The emergency stop mechanism for an electric vehicle according to claim 4, wherein the mechanism is a step portion that protrudes inwardly between the position of the movement restriction pin and engages with the rotation restriction pin. The emergency stop mechanism for an electric vehicle according to claim 1, wherein the movable plate is formed with an emboss projecting toward the base plate on a surface facing the base plate. The movable plate is provided with an accelerator opening sensor that outputs an accelerator opening signal corresponding to the amount of rotation of the accelerator lever, and switch means that outputs a signal for emergency stop of the vehicle. The emergency stop mechanism for an electric vehicle according to claim 1. The emergency stop mechanism for an electric vehicle according to claim 1, wherein the accelerator lever is disposed at a position lower than an operation handle.

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