Suzuki Motor Corporation

Gopinath Raja

Masayoshi Wada

Shunya Sakurai

Tomoya Sato

Baku Matsuura

Atsushi Domeki

Kyohei Anno

A small electric vehicle includes: a body with a forward, backward, and a width direction; left and right driving wheels in the width direction of the body; free wheels, apart from the driving wheels, in the forward and backward direction; left and right motors to respectively transmit power to the left and right driving wheels; left and right rotation speed sensors detecting rotation speeds of the respective motors; an operation unit with an operation element; and a control unit controlling the motors according to an operation on the operation element, the control unit calculates target rotation speeds of the motors, based on a target vehicle speed provided by an operation position of the operation element, and on a target vehicle angular velocity provided by the operation position of the operation element and by the actual speed of the vehicle, and control the left and right motors such that actual rotation speeds of the motors follow the respective target rotation speeds.

Small electric vehicle

The electric walking assisting vehicle includes a vehicle body; left and right driving wheels; left and right motors operable to individually transmit power to the left and right driving wheels; gripping parts provided in an upper portion of the vehicle body and can be gripped by a user in a standing and walking posture; an electromagnetic brake for locking the left and right driving wheels or the left and right motors; a forcible release for the electromagnetic brake; an inclination sensor detecting an inclination of the vehicle body; and a control unit controlling the left and right motors, and during stopping of the left and right motors, when the inclination detected by the inclination sensor is less than a predetermined threshold value, the forcible releasing means for the electromagnetic brake is enabled and when the inclination is the predetermined threshold value or more, the forcible releasing means is disabled.

Electric walking assisting vehicle

The electric walking assisting vehicle includes: a vehicle body; left and right driving wheels; left and right motors which individually transmit power to the left and right driving wheels; universal wheels; gripping parts provided in an upper portion of the vehicle body and are gripped by a user in a standing and walking posture; a gripping sensor detecting that the gripping parts are gripped by the user; left and right rotation speed sensors individually detecting rotation speeds of the left and right driving wheels; and a control unit controlling the left and right motors. The control unit generates torque in the left and right motors in accordance with a torque map which defines relationship between the rotation speeds of the left and right driving wheels detected by the left and right rotation speed sensors and torque command values of the left and right motors in a state in which the gripping sensor is gripped.

A small electric vehicle includes: left and right motors connected so as to respectively transmit power to left and right driving wheels; left and right rotation speed sensors; an inclination sensor; a joystick-type operation element; and a control unit, wherein it is configured to calculate target rotation speeds of the left and right motors, based on a target vehicle speed provided by an inclination angle in consideration of the pitch angle and the roll angle detected through the inclination sensor and by an operation position of the operation element, and on a target vehicle angular velocity provided by the inclination angle, by the operation position of the operation element and by the actual speed of the vehicle, and control the left and right motors such that actual rotation speeds of the left and right motors follow the respective target rotation speeds.

A small electric vehicle includes: a vehicle body that has a forward and backward direction, and a width direction; left and right driving wheels provided apart in the width direction of the vehicle body; left and right motors connected so as to respectively transmit power to the left and right driving wheels; an operation unit that includes a joystick-type operation piece; and a control unit for controlling the left and right motors according to an amount of operation on the operation piece, wherein the control unit is configured to execute deceleration and stop control when the operation piece is returned to the neutral position during travel, and execute rapid stop control irrespective of an amount of operation in left and right directions when the operation piece is tilted backward during forward travel at a speed equal to or greater than a predetermined threshold.

An electric walking assisting vehicle configured such that in accordance with operating amounts acting on an operation part, driving of driving motors is controlled and includes an inclination detector which detects inclination of a vehicle body in a forward-backward direction, and on flat land where inclination is less than a threshold, with an operation origin of the operation part as a center, the driving motors are controlled to generate torque in a forward direction by operation of pushing the operation part forward and to generate torque in a backward direction by operation of pulling the operation part backward, on an uphill road on which the inclination is the threshold value or more, the operation origin is shifted to an pulling operation side, and on a downhill road on which the inclination is the threshold value or more, the operation origin is shifted to a pushing operation side.

A walking aid vehicle () includes: an operation part () provided on an upper portion of a vehicle body for grasping by a user in a walking posture; a detector () for detecting an operation force applied to the operation part; and an inclination detector () for detecting inclination of the vehicle body. When an advance direction inclination detected by the detector is less than threshold, a normal control () generates a normal direction torque in the drive motor (L,R) responsive to pushing the operation part () forward and generates a reverse direction torque in the drive motor responsive to pulling the operation part rearward, and when the advance direction inclination is equal to or greater than threshold and pushing operation force is detected, a shift to a pull control () is made which generates normal direction torque in the drive motor responsive to a pulling operation force.

Walking aid vehicle

In an electric vehicle, a seat on a mobile base can move between a sitting position in which a sitting surface faces the vehicle upper side, and a retracted position in which a seating portion having the sitting surface is retracted from the sitting position to the vehicle front side, a back plate on the mobile base can move between a raised position on the vehicle rear side and the vehicle upper side with respect to the seating portion in the sitting position, and a laid down position on the vehicle front side with respect to the raised position, a cargo bed portion on the mobile base is positioned on the vehicle lower side with respect to the seating portion of the seat in the sitting position and is positioned on the vehicle rear side with respect to the seating portion of the seat in the retracted position.

Electric vehicle

An electric vehicle includes: a mobile base capable of traveling by an electromotive drive; a seat including a seating portion having a sitting surface; and a battery capable of supplying electric power used in the electromotive drive. The seating portion of the seat includes a receiving portion capable of receiving the battery and arranged on a seat lower side with respect to the sitting surface. The mobile base is changeable between an expanded state in which a wheelbase is expanded and a contracted state in which the wheelbase is more contracted than in the expanded state. The seat is movable between a sitting position that the sitting surface faces a vehicle upper side in an expanded state of the mobile base, and a retracted position that the seating portion is retracted from the sitting position to a vehicle front side in a contracted state of the mobile base.

An operating device of an electric vehicle enables an electric vehicle to be operated, the electric vehicle having: left and right driving wheels; and left and right driving motors respectively independently driving these left and right driving wheels. The operating device has: a joystick operable to move so as to issue a turning direction instruction of the vehicle; and a traveling instruction portion issuing a traveling instruction of the vehicle by operation different from movement operation of this joystick. The joystick has a grip operable to be gripped by an occupant of the vehicle. By making a difference between rotating speeds of the left and right driving motors based on a combination of the turning direction instruction of the joystick and the traveling instruction of the traveling instruction portion, a gentle turn or a pivotal brake turn of the vehicle is performed.

Operating device for electric vehicle

The present invention relates to an electric vehicle. The electric vehicle includes: a mobile base capable of traveling by an electromotive drive; and a battery capable of supplying electric power used in the electromotive drive. The mobile base includes: a front base having a front wheel; and a rear base having a rear wheel, the front and rear bases are configured to be capable of moving relative to each other so as to be changeable between an expanded state in which a wheelbase is expanded, and a contracted state in which the wheelbase is more contracted than in the expanded state, the front base includes a receiving portion capable of receiving the battery, and the receiving portion has a front opening formed in a front-end portion of the front base or a rear opening formed in a rear-end portion of the front base.

A mobile object according to the present invention includes: a moving basewhich includes a front basehaving front wheeland a rear basehaving rear wheel; and a seatwhich includes a seating parthaving a seating surfaceand leg partsupporting the seating part. The front baseand the rear baseare movable relative to each other to expand and contract a wheel base H. The seating partis movable backward and forward respectively by movement of the leg partin association with relative movement of the front baseand the rear basefor expansion and contraction of the wheel base H. Thus, the mobile object can be efficiently used in a folded state, and user-friendliness of the mobile object can be enhanced.

Mobile object

The electric vehicle includes a moving base in which a front base with front wheels and a rear base with rear wheels are coupled to be extendable in a front-rear direction of a vehicle, an upper frame in which upper ends of a right and left pair of frames provided upward from both right and left side portions of the rear base are coupled by an upper end frame extending in a vehicle width direction, a seat configured to be movable between a seating position and a folded position, a seat operating part operated by a user seated at the seat, a rear operating part operated by the user in a standing and walking attitude from behind the seat, a rear cover frame extending in the vehicle width direction, wherein an article accommodation portion is formed between the upper end frame and the rear cover frame.

The electric vehicle according to the present invention includes a moving base capable of traveling by electromotive drive, a seat including a seating part having a seating surface and disposed on the moving base, and a back plate used as a seat back corresponding to the seating surface and disposed on the moving base, the seat can move between a seating position with the seating surface facing upward, and a retracting position with the seating part retracted forward from the seating position, the back plate can be moved between a standing-up position located rearward and upward with respect to the seating part of the seat when at the seating position, and a lying-down position located forward of the standing-up position, and the back plate includes a baggage carrier formed on a back surface facing upward when at the lying-down position and allowing baggage to be placed thereon.

Electric vehicle with movable baggage base

A mobile object is configured so as to be capable of moving front and rear basesobject to each other in order to make a wheel base provided between the front wheelsand the rear wheelsexpandable and contractible. The front basemoves so as to be expand and contract the tread width between the front wheelsin association with the expansion and the contraction of the wheel base achieved. The seating partis configured so as to turn forward in association with the relative movement of the front and rear basesin order to contract the wheel base and the tread width. The seating partis configured so as to turn backward in association with the relative movement of the front and rear basesin order to expand the wheel base and the tread width.

Growing community of inventors

Hamamatsu, Japan

Gopinath Raja