JP2006248280A - Electric conveying vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a constitution that a turnaround steering wheel position of an electric conveying vehicle is in the state that a driver himself easily drives it and is easily stored even in a narrow place by falling the steering wheel to a low level when the electric conveying vehicle is stored in a garage or the like. <P>SOLUTION: A control tower provided with the steering wheel for left/right turning operation of a front wheel at an upper part is arranged at a rear side of a load-carrying platform and a front side of a drive base. Left and right rear wheels are supported on an output shaft of respective D.C. electric motor devices mounted to both left and right side parts of a chassis and are rotated/driven. Change of an operation position of the steering wheel is achieved by change of a mounting angle in a longitudinal direction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an electric transport vehicle that a driver gets on and operates, and more particularly, to an electric transport vehicle in which a position of a handle can be rotated between a state where it is easy to drive and a storage state.

  A large drive wheel that is rotated by a mechanical power transmission system (small gear, large gear, belt between both) connected to an electric motor that uses a storage battery as a power source is arranged at the lower front part of the electric vehicle body, and the electric vehicle A small wheel of the caster is arranged at the lower rear part of the main body, an operation handle is provided at the upper end via a direction changing mechanism and a rod-shaped connecting mechanism above the caster, and an electric system operator is provided at the upper rear end of the electric vehicle main body. There is an electric vehicle in which a driver boarding floor is formed between an operation handle and an electric operation element, and a front side is a loading platform from the operation handle. (For example, refer to Patent Document 1).

In this patent document 1, the front wheel 8 is a large drive wheel driven by an electric motor, the rear wheel 11 is composed of a small carrier whose direction is changed, and the storage battery 4 is loaded at the rear upper position of the large diameter front wheel 8. 14 is attached to the lower surface. Further, the operation device 10 for changing the direction of the rear wheel 11 is in the form of a lever protruding upward on the front side of the driver's cab 15 (driver boarding floor 15), and the direction changing mechanism of the rear wheel 11 operated thereby. 16 is arranged in the lower space of the cab 15. In addition, the electric system operator 2 is arranged low on the rear side of the cab 15, and the handle 3 of the electric vehicle is arranged on the rear side of the cab 15.
JP-A-8-72560

  The operation device 10 for changing the direction of the rear wheel 11 of Patent Document 1 is a lever that protrudes upward on the front side of the driver's cab 15 (driver boarding floor 15), and since this is fixed, The person cannot change to the operation state suitable for himself and is forced to drive in this fixed position even in a state where it is difficult to operate. Further, even when a load loaded on the loading platform 14 comes into contact with or covers the operation device 10, it must be operated as it is.

  In view of the above, the present invention enables the direction change handle position of the electric transport vehicle to be changed to a state in which each driver can easily drive. Further, when the electric transport vehicle is stored in a garage or the like, a configuration is provided in which the handle is lowered to easily store it in a narrow place.

  According to a first aspect of the present invention, a front wheel and a rear wheel are disposed at front and rear positions on both left and right sides of a chassis in which a loading platform is disposed on the front side and a cab is disposed on the rear side, and a handle for the left and right rotation operation of the front wheel is upward. The left and right front wheels are supported by the output shafts of the respective DC motor devices attached to the left and right sides of the chassis and are driven to rotate by the DC motor devices. Storage batteries for supplying electric power to the DC motor are arranged on both the left and right sides of the chassis between the wheels and the operation position of the handle can be changed by changing the mounting angle in the front-rear direction.

  According to a second aspect of the present invention, a front wheel and a rear wheel are disposed at front and rear positions on both left and right sides of a chassis in which a loading platform is disposed on the front side and a cab is disposed on the rear side, and a handle for the left and right rotation operation of the front wheel The left and right front wheels are supported by the output shafts of the respective DC motor devices attached to the left and right sides of the chassis and are driven to rotate by the DC motor devices. Storage batteries for supplying power to the DC motor are respectively attached to the left and right side portions of the chassis between the wheels, and the handle is rotatably supported by the chassis, and is in a rearward tilted state detached from the loading platform. It can be set in a forward tilted state that protrudes onto the loading platform, and can be stored in a substantially horizontal state or an inclined state that is less than that in the rearward direction.

  According to a third aspect of the present invention, front wheels and rear wheels are disposed in front and rear positions on both left and right sides of a chassis in which a loading platform is disposed on the front side and a driver's cab is disposed on the rear side. A control tower having a steering handle for driving left and right is disposed on the rear side of the loading platform and on the front side of the driver's cab, and the left and right front wheels are output shafts of the respective DC motor devices attached to the left and right sides of the chassis. Are mounted on the left and right side portions of the chassis between the front wheels and the rear wheels, respectively, and storage batteries for supplying power to the DC motor are attached to the left and right sides of the chassis. Includes a side wall to which a side cover covering the front wheel, the rear wheel, and the storage battery is attached, and the control tower is rotated between a standing operation state and a stowed storage state substantially horizontal or lower toward the rear. It is rotatably supported on the chassis, in the retracted state, characterized in that the lower than the side walls of the right and left between the control tower sidewall cross the right and left, including the handle.

  According to a fourth aspect of the present invention, in the first to third aspects, the control tower including the handle includes a lower handle shaft supported in a left-right rotatable manner in a column fixed to the chassis, and the handle at an upper end. And an upper handle shaft whose lower end portion is connected to the upper end portion of the lower handle shaft so as to be pivotable in the front-rear direction, and a holding device that holds the upper handle shaft in a predetermined position with respect to the lower handle shaft. The holding device is configured such that the shaft selectively fits into one of a plurality of angle selection holes provided in the lower portion of the lower handle shaft by operating the operation lever, and the periphery of the upper handle shaft is covered with a decorative cover. An electric system control unit is disposed on the upper portion of the decorative cover, and the front wheel is rotated left and right by the rotation of the upper handle shaft and the lower handle shaft accompanying the rotation of the handle, The front-rear direction of rotation of the upper handle shaft relative bundle axis, characterized in that a variable the handle position.

  In the first invention, the steering wheel for the left and right rotation operation of the front wheel can be selected and set in a state where the driver can easily drive. Therefore, the handle is disposed on the front side of the cab behind the loading platform, When creating a state of driving while looking at the baggage, when there is no baggage in the loading platform or when the load on the loading platform is low, if it is easy to drive forward, it is possible to create that posture Become. Further, when the luggage on the loading platform is tall or for a person who can easily drive the rear tilt state, the rear tilt state can be created. Thus, since it can be inclined and installed in a state suitable for the state of the load on the cargo bed and the driving posture of the driver, a safe state that is easy to operate can be created. And since the installation position of the handle can be changed, the handle can be fixed at an appropriate position that does not interfere with the loading state of the load on the loading platform even when the loading platform and the cab are placed close to each other for miniaturization. This is suitable for downsizing the transport vehicle.

  In addition to the effects of the first invention, the second invention is a person who can easily set the forward leaning state overhanging the loading platform for those who are easy to drive in the forward leaning state, and prefers the backward leaning state inclined to the driver's cab side. Can be in that state. Further, since the handle can be tilted rearward or forward in a substantially horizontal state or an inclined state lower than that, the handle is obstructed even when the electric transport vehicle 1 is covered and stored in a garage or other narrow space. Since the handle can be in a low posture that prevents contact with other objects, it is also effective in terms of safety.

  The third aspect of the invention is such that the left and right side portions of the chassis are provided with side covers that cover and cover the front wheels, the rear wheels, and the storage batteries, so that the left and right sides are positioned lower than the left and right side walls. Since it can be tilted to the position where it is stored between the side walls, the control tower is also obstructed when the electric transport vehicle 1 is covered and stored in a garage or other confined spaces as in the effect of the second invention. Since the control tower can be in a low posture that prevents contact with other objects, it is also effective in terms of safety.

  According to a fourth aspect of the present invention, in the first to third aspects, the handle is connected to the lower handle shaft that is supported so that the turn of the handle in the front-rear direction is rotatable left and right within a column fixed to the chassis. This is a mechanism for rotating the upper handle shaft in the front-rear direction. For this reason, since the driver can easily operate the holding device by himself and hold the upper handle shaft in a predetermined position, it is easy to operate, and when set to a handle operation position suitable for the driver, The state can be maintained stably and the steering operation is also stable. In addition, it is easy to set the storage position by tilting the handle. Furthermore, since the decorative cover rotates together with the upper handle shaft, the front / rear position of the handle can be changed without changing the arrangement of the electric system control unit arranged thereon.

  In the present invention, a front wheel and a rear wheel are arranged at front and rear positions on both left and right sides of a chassis in which a loading platform is arranged on the front side and a cab is arranged on the rear side. Arranged on the front side of the cab, the left and right front wheels are supported by the output shafts of the respective DC motor devices attached to the left and right side portions of the chassis, and are driven to rotate by the DC motor devices, the front wheels and the rear wheels Between the left and right side portions of the chassis, storage batteries for supplying power to the DC motor are arranged, and the operation position of the handle can be changed by changing the mounting angle in the front-rear direction. The embodiment will be described.

  An embodiment of the present invention will be described with reference to the drawings. Each figure shows an embodiment of an electric transport vehicle according to the present invention, FIG. 1 is a rear perspective view showing a basic form including a chassis structure of the electric transport vehicle according to the present invention, and FIG. 2 is an electric drive according to the present invention. FIG. 3 is a front perspective view showing a basic configuration including a chassis structure of a transport vehicle, FIG. 3 is a left side view showing a basic configuration including a chassis structure of an electric transport vehicle according to the present invention, and FIG. 4 is a front view of the electric transport vehicle according to the present invention. FIG. 5 is a rear perspective view of the electric transport vehicle according to the present invention, FIG. 6 is a perspective view showing the arrangement of the electric system control unit of the control tower provided with the handle of the electric transport vehicle according to the present invention, and FIG. FIG. 8 is a perspective view showing a configuration of a lower end portion of a handle shaft of an electric conveyance vehicle according to the present invention, and FIG. 9 is a diagram according to the present invention. FIG. 10 is a perspective view showing the configuration of the front wheel rotation mechanism of the electric transport vehicle. FIG. 10 is a front wheel rotation mechanism. FIG. 11 is a diagram showing the configuration of the front wheel support portion with respect to the chassis frame, FIG. 12 is a bottom view showing the relationship of the front wheel support member with respect to the chassis frame, FIG. 13 is a perspective view of the rear wheel drive portion, and FIG. FIG. 15 is an electrical circuit diagram, FIG. 16 is a rear view of the handle front / rear position adjusting device, FIG. 17 is a perspective view of the handle front / rear position adjusting device, and FIG. 18 is a front view of the handle. FIG. 19 is a side perspective view in which the handle is in a lying state.

  1 is an electric transport vehicle according to the present invention, in which a loading platform 3 is disposed on the front side and a cab 4 is disposed on the rear side, side walls 1A are disposed on the left and right sides so as to gradually increase from the front to the rear, A front wheel 5 and a rear wheel 6 are disposed at the front and rear positions, and a control tower 9 having a handle 7 and an electric system control unit 8 for turning the front wheel 5 in the left-right direction is disposed on the front side of the cab 4. The chassis 2 of the electric transport vehicle 1 includes a loading platform 3, a cab 4, a control tower 9 having a handle 7 provided at a rear side of the cab 4 on the rear side of the loading platform 3, a front wheel 5 that is operated by a handle, The rear wheel 6 driven by the electric motor and the storage battery 11 for supplying electric power to the electric motor are provided, and the vehicle body frame 2A serving as a base and an exterior member covering the vehicle body frame 2A are configured. The height of the handle 7 from the floor of the cab 4 is a height at which the driver can easily drive with the driver standing on the cab 4.

  The chassis frame 2A forms a floor portion 3A of the loading platform 3 and a floor portion 4A of the cab 4 and is configured such that side wall portions 2C serving as base members of the sidewall 1A are formed on both the left and right sides. The floor portion 4A of the cab 4 is formed in a substantially horizontal state by the chassis frame 2A. The exterior member that covers the chassis frame 2A is, as will be described later, a flooring 3B fixed on the floor 3A of the cargo bed 3 with screws N1, and a screw N2 on the floor 4A of the cab 4 The floor frame 4A that is stopped, the outer wall 2C1 that is fixed to the side wall 2C with screws N3 so as to cover the outer side of the side wall 2C of the chassis frame 2A, and the left and right inner surfaces of the loading platform 3 are formed. The inner wall 3C1 fixed to the side wall 2C of the vehicle body 2C by the screw N4, the inner wall 3C2 fixed to the side wall 2C of the chassis frame 2A by the screw N6 so as to form the inner wall of the loading platform 3, and the left and right sides of the cab 4 An inner wall 4C1 fixed to the side wall 2C of the chassis frame 2A with a screw N5 so as to form an inner surface, and an inner wall 4C2 fixed to the chassis frame 2A with a screw N7 so as to form a back wall of the cab 4 It has.

  The front wheel 5 and the rear wheel 6 are arranged at the front and rear positions on both the left and right sides of the chassis 2, and the chassis 7 is positioned so that the handle 7 for the left and right pivoting operation of the front wheel 5 is located higher between the loading platform 3 and the cab 4. In the center part of 2 right and left, it is arrange | positioned high above the front side of the cab 4 in the rear side of the loading platform 3. FIG. The handle 7 is disposed on the front side of the cab 4 on the rear side of the load platform 3 in the left and right central portions of the chassis 2 so as to be positioned between the load platform 3 and the cab 4. On both the left and right sides of the chassis 2, driving DC motor devices 10 are attached to mounting portions provided on the chassis frame 2 A by appropriate fixing means such as screws N 8, and the rotational output shafts of the respective driving DC motor devices 10. The axle 6A of the left and right rear wheels 6 is attached to 10B. A storage battery 11 for supplying power to the DC motor 10A of each driving DC motor device 10 is attached to the left and right side portions of the chassis 2 between the front wheel 5 and the rear wheel 6, whereby the storage battery 11 is located behind the cargo bed 3. Correspondingly arranged on the left and right sides of the part.

  As a result, the front wheels 5 are arranged on the left and right sides of the loading platform 3 at positions closer to the front side of the loading platform 3, while the left and right rear wheels 6 are arranged corresponding to the left and right sides of the cab 4. Each DC motor device 10 for driving is arranged corresponding to the left and right sides of the front of the cab 4 slightly forward of the axle 6A of the rear wheel 6 due to the connection relationship between the rotation output shaft 10B and the axle 6A of the rear wheel 6. It is the state that was done. With this configuration, the rear wheel 6 is a driving wheel and the front wheel 5 is a steering wheel, so that the weight of the driver who rides on the cab 4 is received mainly by the rear wheel 6, Even when the vehicle is not mounted, stable driving can be obtained by sufficient resistance that the weight of the driver receives the weight of the driver and the rear wheel 6 contacts the floor or the ground.

  The storage battery 11 is arranged on the inner side of the line connecting the outer surface of the front wheel 5 and the rear wheel 6 facing in the straight direction, so that the storage battery 11 is kept in a state of not protruding outward from the outer surface of the front wheel 5 and the rear wheel 6. ing. For this reason, the storage battery 11 is less likely to collide with other objects appearing on the side surface of the electric transport vehicle 1 due to the travel of the electric transport vehicle 1, and it becomes easy to drive. The level of the chassis 2 that forms the floor 3A of the cargo bed 3 is a low center of gravity structure that is disposed at a position that is approximately the same height as the levels of the axles 5A and 6A of the front wheels 5 and the rear wheels 6. For this reason, it will be in the state which is easy to carry out the loading and unloading work of the wheelchair and other things to the loading platform 3. And, if the level of the chassis 2 is too low, the bottom of the chassis 2 collides with the uneven part of the road surface during traveling, and it becomes an obstacle to traveling, and there is also a danger due to sudden braking due to the collision, In the present invention, since the bottom of the chassis 2 can be kept at a moderate distance from the road surface, such a problem is also solved.

  Similarly to the loading platform 3, the level of the chassis 2 that forms the floor of the cab 4 is arranged at a position that is approximately the same level as the levels of the axles 5 </ b> A and 6 </ b> A of the front wheels 5 and the rear wheels 6. A low center of gravity structure can be obtained. In order to achieve this, the illustrated chassis frame 2A includes a vertical frame member 2A1 extending in the front-rear direction, a horizontal frame member 2A2 that intersects the frame frame 2A, and a peripheral frame member 2A3 that forms a peripheral portion. 3A and the floor 4A of the cab 4 are formed as a series of planes in the front-rear direction. In this way, the floor portions of both the loading platform 3 and the cab 4 formed on the chassis 2 are formed in a substantially identical plane by the series of chassis frames 2A. And the floor part of the loading platform 3 and the cab 4 is formed in this chassis frame 2A at the substantially same height as the level which connects the axles 5A and 6A of the left and right front wheels 5 and the rear wheels 6. As a result, the configuration of the chassis frame 2A is simplified, and the chassis frame 2A has a strong structure, so that stable travel can be achieved together with stable loading of heavy objects.

  The front wheel 5 and the rear wheel 6 are wheels in which rubber tires that keep swelling with air are attached to the outer periphery of a metal wheel, and the front wheel 5 and the rear wheel 6 are configured by wheels having substantially the same diameter, Thus, considering the stability of loading and unloading of luggage on the loading platform 3 and traveling stability, the level of the floor of the loading platform 3 and the cab 4 is substantially the same as the level connecting the axles 5A and 6A of the front wheels 5 and the rear wheels 6. Is formed. As an example of achieving this object, the centers of the axles 5A and 6A of the front wheel 5 and the rear wheel 6 having substantially the same diameter have a low center of gravity so that the height from the ground is 150 mm to 160 mm. Accordingly, the floor portions of the loading platform 3 and the cab 4 are approximately 150 mm to 160 mm from the ground, and have a low center of gravity configuration.

  Due to this low center of gravity configuration, the wheelchair can be mounted by rolling the left and right wheels from the front of the loading platform 3. When the wheelchair is mounted on the loading platform 3 (see FIG. 22), it is provided on the floor of the loading platform 3. What is necessary is just to comprise so that the wheelchair may be fixed with the appropriate wheelchair fixing tool. If the lateral width of the loading platform 3 is slightly wider than the lateral width of the wheelchair, the left and right sidewalls of the loading platform 3 will be effective as the left and right movement restriction walls of the loaded wheelchair. It is effective as the transport vehicle 1. Moreover, if the hollow which fits both right and left wheels of a wheelchair is formed in the floor of the loading platform 3, and it fixes with the said wheelchair fixing tool in the state which both the left and right wheels of the wheelchair were fitted in this hollow, the movement of the wheel of a wheelchair will move back and forth by this hollow. It is limited and can maintain a more stable loading state. In addition, what is necessary is just to cover this hollow with a flat plate, when loading a general load.

  Each driving DC motor device 10 includes a DC motor 10A, a gear device 10C that is combined with the rotating shaft of the DC motor 10A and rotates the output shaft 10B, and a gear (not shown) attached to the rotating shaft of the DC motor 10A. 1) and a clutch device 10D for attaching and detaching the meshing of the gear (not shown) of the gear device 10C. Clutch device 10D detaches and engages a gear (not shown) attached to the rotating shaft of DC motor 10A and a gear (not shown) of gear device 10C by external operation of clutch lever 10D1. Note that a switch 10E for turning on and off the electric circuit by the clutch lever 10D1 is provided, and the clutch lever 10D1 is in a state in which the clutch device 10D is inserted (the gear attached to the rotating shaft of the DC motor 10A and the gear of the gear device 10C). Switch 10E is turned on and the clutch lever 10D1 is disengaged (the gear attached to the rotating shaft of the DC motor 10A is disengaged from the gear of the gear device 10C). ), The switch 10E is turned off.

  The handle 7 is provided at the upper end portion of the handle shaft 9B, and the handle shaft 9B rotates left and right as the handle 7 rotates left and right. The handle shaft 9B is rotatably supported by a column 9A attached to the chassis frame 2A. Specifically, the lower part of the cylindrical column 9A is supported by an oblique support member 2E fixed to the two vertical frame members 2A1 of the chassis frame 2A by welding or screws, respectively. It has been. The upper part of the cylindrical column 9A is attached to a support bar 2D across the left and right side walls 2C of the chassis frame 2A by welding or screws. The handle shaft 9B includes a lower handle shaft portion 9B1 supported in a cylindrical column 9A so as to be rotatable left and right by a bearing, and a connecting shaft portion 80 on the upper end of the lower handle shaft portion 9B1 at a position above the support bar 2D. The upper handle shaft portion 9B2 is connected to the upper handle shaft portion 9B2, and the upper handle shaft portion 9B2 is provided with a handle 7 at the upper end. Therefore, the handle 7 and the upper handle shaft portion 9B2 are integrated and can be rotated back and forth with respect to the lower handle shaft portion 9B1, and as the handle 7 is turned left and right, the upper handle shaft portion 9B2 and the lower handle shaft portion 9B2 are rotated. The shaft portion 9B1 rotates to the left and right, and the front wheel 5 changes its direction to the left and right as will be described later.

  The periphery of the upper handle shaft portion 9B2 is covered with a decorative cover 9C, and an electric system control unit 8 is disposed on the upper part of the decorative cover 9C. The handle 7, the electric system control unit 8, and the decorative cover 9C are included. As a whole, a control tower 9 is configured to rotate left and right simultaneously with the handle 7. For this reason, as described above, the control tower 9 including the handle 7 is placed at the rear side of the loading platform 3 at the front side position of the cab 4. For this reason, the handle shaft 9B is rotated left and right by rotating the handle 7 to the left and right. In the cover 9C, a lead wire 8A connected to the electric system control unit 8 is disposed.

  A headlight 14 and a taillight 15 are respectively attached to the front end portion and the rear end portion of the left and right side wall portions 2C of the chassis frame 2A, and necessary wiring for the storage battery 11 is provided. The control tower 9 is provided with a switch 16 for turning on and off the headlight 14 and taillight 15 by the driver, and a charging terminal 11A of the storage battery 11.

  The arrangement of the cab 4 and each driving DC motor device 10 is such that the load of each driving DC motor device 10 and the weight of the driver riding on the cab 4 are mainly applied to the rear wheels 6 rather than the front wheels 5. It is composed. The storage battery 11 is attached to the left and right side portions of the chassis 2 between the front wheel 5 and the rear wheel 6, and the load of the storage battery 11 is close to the rear wheel 6 as described above, but the front wheel 5 and the rear wheel 6. This is a low center of gravity configuration. As a result, when the driver rides on the driver's cab 4, the load can be balanced in both the state where no load is loaded on the load platform 3 and the state where the load is loaded. I can run.

  Below the handle 7, that is, below the control tower 9, an electrical box 17 is mounted on the chassis frame 2A. This attachment is attached to the support member 2E fixed to the chassis frame 2A by welding or screws so as to support the support column 9A. The electric system control unit 8, each DC motor 10A, the switch 10E of the clutch device 10D, the charging terminal 11A of the storage battery 11, the forward / backward switching device 12, the power switch 13, the headlight 14, the taillight 15, the switch 16, etc. It is connected to the storage battery 11 via the switchboard of the box 17.

  By operating the handle 7, the handle shaft 9 </ b> B rotates to the left and right, whereby the front wheel 5 rotates to the left and right. Hereinafter, this mechanism will be described. A rotating body 18 protruding left and right is fixed to the lower end portion of the columnar handle shaft 9B protruding downward from the cylindrical column 9A by welding or a screw. One end of each of the front and rear operation rods 19 is coupled by a shaft support portion 24 so as to be rotatable. The front wheel 5 has an axle 5A rotatably supported by a horizontal shaft 22A of an axle member 22, and the axle member 22 is provided on a support member 20 disposed close to the lower side of the lateral frame member 2A2 of the chassis frame 2A. A shaft is supported on the vertical longitudinal axis portion 21 so as to be rotatable left and right. One end of a left / right actuating rod 23 is rotatably coupled to an arm portion 22B extending rearward from the axle member 22 by a shaft support portion 25. The other end of each front / rear actuating bar 19 is coupled to the left and right parts of a rotating body 27 that is pivotally coupled to the horizontal frame member 2A2 of the chassis frame 2A by a shaft support 26 by a shaft support 28. Has been. The rotating body 27 is disposed at the center between the left and right front wheels 5, 5. In this state, the front / rear operation rod 19 extends in a substantially parallel state in the front / rear direction at the left / right center of the chassis 2. The other end of the left / right actuating rod 23 is coupled to a rotating body 27 by a shaft support portion 29 so as to be rotatable.

  In this configuration, if the handle 7 is rotated to the left, the left front / rear operation rod 19 is retracted, and the right front / rear operation rod 19 is advanced to rotate the rotation body 27 to the left. 23 is pulled rightward, and the right and left operating rods 23 are pushed rightward. By this operation, the left and right front wheels 5 are rotated leftward about the vertical axis portion 21. In this state, the electric transport vehicle 1 traveling forward turns to the left. Further, if the handle 7 is rotated to the right, the front wheel 5 is rotated to the right about the vertical axis 21 by the reverse operation to the above, and the electric guided vehicle 1 traveling forward turns to the right. Will be.

  The support member 20 to which the axle member 22 is rotatably attached has a center portion of the support member 20 supported by a shaft support portion 31 rotatably on a front and rear support portion 30 suspended from the horizontal frame member 2A2. Thus, the support member 20 is disposed close to the lower side frame member 2A2 of the chassis frame 2A while maintaining the gap G. For this reason, the left and right sides of the support member 20 can move up and down with respect to the chassis frame 2A around the shaft support portion 31. A rubber cushion material 32 is attached to the lower surface of the horizontal frame member 2A2 at equal left and right positions. When the support member 20 is in a horizontal state with respect to the horizontal chassis frame 2A, the support member 20 and the cushion material are disposed. A slight gap 33 is formed between the first and second members 32. When the unevenness of the road surface is small, the width of the vertical movement of the front wheel 5 is small, and the support member 20 moves up and down within the gap 33 around the shaft support portion 31 as the front wheel 5 moves up and down. Do not push 2A upward. For this reason, when the front wheel 5 moves up and down due to road surface unevenness, the gap 33 serves as a working space that absorbs the road surface unevenness with respect to the chassis frame 2A.

  The rear wheel 6 moves up and down according to the unevenness of the road surface, whereby the rear part of the chassis frame 2A moves up and down, but the gap 33 on the side of the front wheel 5 exerts its absorbing effect on some unevenness of the road surface. Therefore, the shaking of the entire electric transport vehicle 1 is mitigated. When the road surface is uneven, the width of the vertical movement of the front wheel 5 increases, the support member 20 collides with the cushion material 32, the support member 20 pushes the lateral frame member 2A2 upward, and the chassis frame 2A moves upward. Although pushed, when the road surface has little unevenness, the shaking of the chassis frame 2A becomes small, and the electric transport vehicle 1 can travel stably.

  Note that the pair of left and right adjustment rods 34 screwed to one of the front and rear support portions 30 restricts the back and forth movement of the support member 20, so that the support member 20 can stably move up and down around the shaft support 31. Can do.

  As described above, the chassis frame 2 </ b> A has a configuration in which the floor 3 </ b> A of the loading platform 3 and the floor 4 </ b> A of the cab 4 are formed, and the side walls 2 </ b> C are formed on both the left and right sides. A substantially flat flooring 3B is fixed to the chassis frame 2A with screws N1 on the upper surface of the floor 3A of the loading platform 3, and a substantially flat flooring 4B is secured to the chassis frame 2A on the upper surface of the floor 4A of the cab 4. 2A is fixed with screws N2 to form respective floor surfaces. Further, the outer wall 2C1 is fixed to the side wall 2C with screws N3 so as to cover the outer side of the side wall 2C, and the inner wall 3C1 is fixed to the side walls 2C with screws N4 so as to form the left and right inner walls of the cargo bed 3. The inner wall 3C2 is fixed to the support bar 2D across the left and right side wall portions 2C with screws N6 so as to form the inner wall of the loading platform 3. In this way, the side wall 1A is formed. Then, the inner wall 4C1 is fixed to the left and right side walls 2C with screws N5 so as to form the left and right inner walls of the cab 4, and the support rail 2D extending over the left and right side walls 2C so as to form the inner wall of the cab 4. The inner wall 4C2 is fixed with a screw N7. With this configuration, a partition wall between the loading platform 3 and the cab 4 is configured by the inner wall 3C2 and the inner wall 4C2 attached to the support rail 2D, and the control tower 9 protrudes above the partition wall. .

  In the illustrated form, the inner side wall 4C1 that forms the left and right inner side walls of the cab 4 is constituted by the inner side wall 3C1 that forms the left and right inner side walls of the loading platform 3 and a series of substantially flat plates. The structure is reduced and installation is simplified. Further, the outer wall 2C1 that covers the outside of the side wall 2C integrally forms the front and rear fender portions 41 and 42 that cover the front and rear wheels 5 and 6, and the storage battery 11 at the intermediate portion between the front and rear fender portions 41 and 42. Covering. The flooring 3B is preferably made of metal in terms of strength for loading luggage, and the flooring 4B is also preferably made of metal in terms of strength because the driver stands and operates. Further, the outer wall 2C1 can be made of metal, but considering the appearance design including the fender portions 41 and 42, FRP (glass fiber reinforced) considering the synthetic resin injection molded product or strength. Synthetic resin) is preferable. The inner side wall 3C1, the inner side wall 3C2, the inner side wall 4C1, and the inner side wall 4C2 may be made of metal, but are made of a synthetic resin injection molded product or FRP (glass fiber reinforced synthetic resin) in consideration of strength. You can also.

  An electric system control unit 8 is provided in the upper part of the control tower 9. This electric system control unit 8 is disposed in the upper part of the control tower 9 and adjusts the applied voltage or current to each DC motor 10A, and a speed setting device 39 which is arranged in the vicinity of the handle 7 and is operated by the driver. The switch device 12 that operates with the levers 12A and 12B, the switch button 43 that sounds on the horn in the ON state, and the display unit 44 that displays the charging state of the storage battery 11, which are arranged on the upper panel of the control tower 9, The operation knob 40 of the speed setting device 39 and the display section 38 related thereto, the switch 16 for simultaneously turning on and off the headlight 14 and the taillight 15, and the charging of the storage battery 11 disposed on the upper rear side of the control tower 9. A charging terminal 11A for connecting the cable 11B, a power switch 13 and the like are included. The charging terminal 11 </ b> A of the storage battery 11 has a configuration in which a nut member provided at an end of the charging cable 11 </ b> B connected to the commercial power supply is screwed.

  Each DC motor 10A is configured to be in an operating state of rotating when all of the power switch 13, the changeover switch device 12, and the switch 10E of the clutch device 10D are turned on (ON). As a result, the check for starting the driving of the rear wheel 6 can be performed in three stages. That is, since it is possible to confirm whether these three switches are ON or OFF, it is excellent in ensuring safety when starting traveling forward or backward. This specific electric circuit is shown in FIG. 15. When the movable piece of the forward / backward changeover switch device 12 is connected to the contact a, each DC motor 10A rotates in the forward direction and the rear wheel 6 rotates in the forward direction. Then, the electric transport vehicle 1 moves forward. When the movable piece of the forward / backward changeover switch device 12 is connected to the contact b, each DC motor 10A rotates in the reverse direction, the rear wheel 6 rotates in the reverse direction, and the electric transport vehicle 1 moves backward. .

  Thus, the electric transport vehicle 1 can move forward or backward when each DC motor 10A is in an operating state, but each DC motor 10A includes a power switch 13, a changeover switch device 12, and a clutch device 10D. When all the switches (that is, the switch 10E of the clutch device 10D) are turned on, the driving state in which the rear wheel 6 rotates is set. When the driver turns on the power switch 13, turns on the clutch device 10D (switch 10E is turned on), and the driver holds the right lever 12A with the hand holding the right handle 7, the changeover switch device Since the 12 movable pieces are turned on at the contact a and each DC motor 10A rotates in the forward direction, the electric transport vehicle 1 moves forward at a predetermined speed.

  This speed can be set to the speed of the memory by turning the knob 40 of the speed setting device 39 provided on the upper panel of the control tower 9 and adjusting it to an arbitrary position in the memory of the speed display section 38. The speed setting device 39 turns the knob 40 to increase or decrease the current or voltage supplied to each DC motor 10A, and this speed can be controlled in the range of 2 to 15 km / h. If the lever 12A of the changeover switch device 12 is removed, the electric transport vehicle 1 has an internal resistance of each DC motor device 10 for driving, that is, an electric working between the rotor and the stator of the DC motor 10A. It stops by resistance and mechanical resistance by gear apparatus 10C etc. In addition, in order to stop suddenly, a brake device that can be operated by the driver can be provided.

  In order to move the electric transport vehicle 1 backward, the driver turns on the power switch 13, turns on the clutch device 10D (switch 10E is turned on), and the driver holds the left lever 12B with the hand holding the left handle 7. By grasping, the movable piece of the changeover switch device 12 is turned on at the contact point b, and each DC motor 10A rotates in the reverse direction, so that the electric transport vehicle 1 moves backward at a predetermined speed set by the knob 40. . If the lever 12B of this change-over switch device 12 is removed, the electric transport vehicle 1 has an internal resistance of each DC motor device 10 for driving, that is, an electric working between the rotor and the stator of the DC motor 10A. It stops by resistance and mechanical resistance by gear apparatus 10C etc.

  At the front end of the chassis 2, a bumper 35 having a left and right length across the width of the electric transport vehicle 1 is provided. The bumper 35 is configured by a bumper member 35A that extends horizontally to the front end portion of the chassis frame 2A and a cushion material 35B that covers the bumper member 35A. The cushion material 35B is resinous like urethane rubber. A guard 36 is provided at the front end of the loading platform 3 to prevent the cargo from dropping off from the loading platform 3 forward. The guard 36 is rotatably supported by the chassis frame 2A so that the guard 36 can be tilted when loading and unloading luggage. In the illustrated example, the base portion of the guard 36 is supported by a peripheral frame member 2A3 constituting the front member of the chassis frame 2A so that the base portion of the guard 36 can be rotated rearward by a shaft 37, and the base portion of the guard 36 and the bumper member 35 are integrally formed. It is a structured. As a result, in a normal state, the guard 36 protrudes upward as shown in the figure and guards the front end portion of the loading platform 3, and rotates rearward along the upper surface of the floor portion 3 </ b> A of the loading platform 3. By tilting, the front end portion of the loading platform 3 is released, and it becomes easy to load and unload the luggage on the back side of the loading platform 3. In addition, if the guard 36 is configured to be able to be tilted forward by rotation, it becomes easier to load and unload the load at the front end of the loading platform 3. In this case, a holding device for holding the guard 36 in an upright state is necessary so as to prevent the load from slipping off when the load is loaded on the loading platform 3.

  In the present invention, the position of the direction changing handle 7 of the electric transport vehicle 1 can be changed to a state in which the driver himself can easily drive. Further, when the electric transport vehicle 1 is stored in a garage or the like, the handle 7 is lowered to provide a configuration that can be easily stored in a narrow place. The configuration of the front / rear position adjusting device 70 for the handle 7 for this purpose will be described below.

  The operation position of the handle 7 can be changed by changing the mounting angle in the front-rear direction with respect to the chassis frame 2A. That is, a columnar lower handle shaft 9B1 is supported by a support 9A fixed to the chassis frame 2A so as to be turnable left and right by a bearing, and an upper end portion of the lower handle shaft 9B1 is provided at a lower end of the upper handle shaft 9B2. The parts are connected by a connecting shaft part 80 so as to be pivotable back and forth. A handle 7 is connected to the upper end of the upper handle shaft 9B2. With this configuration, the upper handle shaft 9B2 can be rotated in the front-rear direction with the shaft portion 80 as an axis with respect to the lower handle shaft 9B1, but in the present invention, the upper handle shaft 9B2 is held at the rotated predetermined position. A holding device is provided.

  The front / rear position adjusting device 70 including the holding device will be described in more detail. The upper end of the lower handle shaft 9B1 is provided with a support portion 51 having an upper horizontal shaft 50, and the horizontal shaft 50 penetrates and supports the lower end of the upper handle shaft 9B2, thereby forming a connecting shaft portion 80. ing. At the lower end of the upper handle shaft 9B2, a fan-shaped angle selector 52 is formed in the lower part of the connecting shaft 80, and a plurality of angle selectors 52 are arranged on the circumference around the horizontal axis 50. The angle selection hole 53 is formed. The angle selection hole 53 may be a bottomed hole, but in the figure, it is formed by an angle selection hole penetrating the angle selection portion 52, and is composed of four substantially equiangularly arranged 53A to 53D.

  The support portion 51 has a bearing portion 54 extending in the horizontal direction at the lower portion, and a shaft 56 extending in the horizontal direction from the operation lever 55 passes through the bearing hole 54A of the bearing portion 54 so as to be rotatable. ing. The shaft 56 is disposed on the same circumference as the angle selection holes 53 </ b> A to 53 </ b> D so that the tip portion selectively fits into one of the angle selection holes 53. By rotating the operation lever 55, the tip of the shaft 56 is configured to move horizontally between a state in which it protrudes from the support portion 51 to the angle selection portion 52 and a state in which it has retracted. Therefore, an inclined surface 57 is formed at the protruding end portion of the bearing portion 54, and an inclined surface 58 along the inclined surface 57 is also formed at the base portion of the shaft 56 of the operation lever 55. A large-diameter hole 82 is formed in the bearing portion 54 so as to communicate with the bearing hole 54 </ b> A, and one end of the outer periphery of the shaft 56 contacts the stepped portion 59 at the end of the hole 82 in the hole 82. A coil spring 60 that is in contact with the stopper 61 attached to the shaft 56 at the other end is held. In a state where the inclined surface 57 and the inclined surface 58 are aligned substantially in parallel, the state in which the tip of the shaft 56 is fitted into one of the holes 53A to 53D by the extending action of the coil spring 60 is maintained.

  In this configuration, the inclined surface 57 and the inclined surface 58 are matched substantially in parallel by the extension action of the coil spring 60, and the state where the tip of the shaft 56 is fitted in the hole 53A is maintained. This state is the state of FIG. This is because the axis of the control tower 9, that is, the axis of the upper handle shaft 9B2, is positioned on the tilt direction axis L1 inclined toward the cab 4 by an angle α1 with respect to the vertical direction axis L0 and includes the handle 7. The control tower 9 is in a standard set state slightly inclined backward.

  When changing the set state of the control tower 9 from the standard set state, the inclined surface 57 and the inclined surface 58 are matched while the coil spring 60 is compressed by rotating the operation lever 55 with respect to the bearing portion 54. Therefore, the shaft 56 is retracted and the tip of the shaft 56 is detached from the hole 53A. In this state, the control tower 9 can freely rotate back and forth, and the tip of the shaft 56 fits into one of the holes 53A to 53D in a predetermined inclined state, so that it can be set from the standard set state to another inclined state.

  That is, when the shaft 56 is retracted and the tip of the shaft 56 is disengaged from the hole 53A, the control tower 9 is turned forward by turning the control tower 9 forward, so that the control lever 55 is tilted slightly forward. When the operation is stopped and the hand is released from the operation lever 55, the inclined surface 58 of the operation lever 55 slides on the inclined surface 57 and the shaft 56 projects toward the angle selection unit 52 by the restoring force of the coil spring 60. Then, in a position where the axis of the upper handle shaft 9B2 is inclined forward by an angle α2 with respect to the vertical axis L0, the shaft 56 matches the hole 53B, and the shaft 56 fits into the hole 53B by the return force of the coil spring 60. It becomes. In this state, the control tower 9 including the handle 7 is in a forward tilt state in which the control tower 9 is positioned on the tilt direction axis L2 and protrudes upward on the loading platform 3 side. When the control tower 9 including the handle 7 is rotated forward and the shaft 56 is aligned with the hole 53B, the shaft 56 is fitted into the hole 53B by returning the operation lever 55 to the original state. The setting method may be used.

  In addition, as described above, by rotating the operation lever 55, the control tower 9 is rotated backward while the shaft 56 is retracted and the tip of the shaft 56 is disengaged from the hole 53A or the hole 53B. The tower 9 can be in a state inclined further to the rear than the standard set state. In this state, when the operation of the operation lever 55 is stopped and the hand is released from the operation lever 55 in the same manner as described above, the inclined surface 58 of the operation lever 55 slides on the inclined surface 57 and the shaft 56 selects the angle by the restoring force of the coil spring 60. Projecting toward the portion 52. Then, at a position inclined backward by an angle α3 with respect to the vertical axis L0, the shaft 56 matches the hole 53C, and the shaft 56 is fitted into the hole 53C by the restoring force of the coil spring 60. This is because the axis of the control tower 9, that is, the axis of the upper handle shaft 9B2, is located on the tilt direction axis L3 inclined toward the cab 4 side by an angle α3 with respect to the vertical direction axis L0 and includes the handle 7. The control tower 9 is in a tilted state after slightly tilting upward on the cab 4 side. In addition, when the control tower 9 is rotated backward and the shaft 56 is aligned with the hole 53C, the operation lever 55 is rotated and returned to the original state so that the shaft 56 is fitted in the hole 53C. Good.

  Further, as described above, the control lever 9 is rotated further rearward in a state where the shaft 56 is retracted and the tip of the shaft 56 is disengaged from the hole 53A, the hole 53B, or the hole 53C. As a result, the control tower 9 is in a substantially horizontal state or an angle state below that. In this state, when the operation of the operation lever 55 is stopped and the hand is released from the operation lever 55 in the same manner as described above, the inclined surface 58 of the operation lever 55 slides on the inclined surface 57 and the shaft 56 selects the angle by the restoring force of the coil spring 60. Projecting toward the portion 52. When the shaft 56 coincides with the hole 53D at a position inclined backward by the angle α4 with respect to the vertical axis L0, the shaft 56 is fitted into the hole 53D. In this state, the control tower 9 is located on the inclination direction axis L4 and is in a lying state in an approximately horizontal state or an angle state below the cab 4 side. This is because the axis of the control tower 9, that is, the axis of the upper handle shaft 9B2, is located on the tilt direction axis L4 inclined toward the cab 4 by an angle α4 with respect to the vertical direction axis L0 and includes the handle 7. The control tower 9 is in the stowed state in which it is laid down on the cab 4 side in a substantially horizontal state or an angle state below that. Alternatively, when the handle 7 is rotated rearward and the shaft 56 is aligned with the hole 53d, the operation lever 55 is returned to the original state to return the shaft 56 to fit into the hole 53D. .

  In the above, the control tower 9 including the handle 7 holds the storage state in which the shaft 56 is fitted in the hole 53D and is substantially horizontal on or below the cab 4 side. The same storage state can be maintained by this method. This is because, for example, the angle selector 52 is not provided with a hole 53D, and the control lever including the handle 7 is rotated with the operation lever 55 rotated so that the tip of the shaft 56 is disengaged from the hole 53A, hole 53B or hole 53C. When the rearward end surface 52P of the angle selecting portion 52 abuts the lower end receiving surface 51A of the support portion 51, the control tower 9 including the handle 7 is in a substantially horizontal state on the cab 4 side. It can also be set as the structure maintained in the following fallen storage state.

  Thus, in the stowed state in which the control tower 9 including the handle 7 is laid down on the cab 4 side, the control tower 9 including the handle 7 is lower than the left and right side walls 1A between the left and right side walls 1A. . For this reason, even when the electric transport vehicle 1 is covered and stored in a garage or other narrow space where the vertical distance is low, the control tower including the handle 7 can be kept out of the way. Since the control tower containing the can be placed in a low posture to prevent contact with other objects, it is also effective in terms of safety.

  As described above, the periphery of the upper handle shaft 9B2 is covered with the decorative cover 9C, and the electric system control unit 8 is disposed on the upper portion of the decorative cover 9C to constitute the control tower 9 as a whole. And in this cover 9C, the lead wire 8A connected to the electric system control part 8 is arrange | positioned. For this reason, in the state where the fixing by the holding device is removed, the decorative cover 9C rotates in the front-rear direction together with the upper handle shaft 9B2, so that the arrangement of the electric system control unit 8 arranged on the cover 9C is not changed, and the front-rear of the handle 7 is not changed. The position can be changed.

  As shown in the figure, the upper end portion of the cylindrical column 9A and the upper end portion of the lower handle shaft 9B1 are covered with a bellows-shaped rubber cover 81, and are protected from the outside so that dust or the like does not enter the portion. Yes. If the rubber cover 81 covers the entire portion of the front / rear position adjusting device 70 including the connecting shaft portion 80 in an exposed state, the rubber cover 81 can suppress the intrusion of dust into this portion, and this portion. The risk of injury from being touched by a driver or other person can be prevented.

  20 and 21 show a second embodiment of the electric transport vehicle 1 according to the present invention. FIG. 20 is a front perspective view of the electric transport vehicle 1 according to the present invention in a state in which loads are loaded, and FIG. It is a side view of the electric conveyance vehicle 1 which concerns on this invention of the state which loaded. The electric carrier 1 of the second embodiment has side walls on both the left and right sides of the cargo bed 3 so that the load M can be easily loaded and unloaded from the left and right sides of the cargo bed 3 as compared with the electric carriage 1 of the first embodiment. Although 1A is made low and the exterior differs from the electric conveyance vehicle 1 of Example 1, it is a low center-of-gravity configuration similarly to the electric conveyance vehicle 1 of Example 1, and about the structure of each part about the electric conveyance of Example 1 Since it is the same as that of the transport vehicle 1, the description thereof is omitted, but the same functional components as those of the first embodiment shown in the figure are denoted by the same reference numerals as those of the first embodiment.

  The side wall 1A is formed with side wall portions 2C on the left and right sides of the chassis frame 2A in the same manner as the electric transport vehicle 1 of the first embodiment, and the front and rear wheels 5 and 6 are attached to the outer wall 2C1 covering the outside of the side wall portion 2C. The front and rear fender portions 41 and 42 are integrally formed. Since the side walls 1A on both the left and right sides of the loading platform 3 are lowered, the right and left sides of the control tower 9 and the cab 4 are arranged to prevent the tall luggage M from falling over and falling from the left and right sides of the loading platform 3. A part 2C11 of the outer wall 2C1 formed so as to cover both the left and right sides is provided with left and right side guards 45 extending rearward above the side walls 1A in parallel with the left and right side walls 1A. It is provided so as to be rotatable upward about the portion 45A. Loading and unloading of luggage from the left and right sides of the loading platform 3 can be performed in a state where the left and right guards 45 are rotated approximately 90 degrees upward.

  Further, in order to prevent the driver H standing on the cab 4 from falling to the rear of the cab 4, it passes from one side of the cover 9 </ b> C of the control tower 9 to one side of the cab 4 to the rear. A driver's guard 46 is provided that extends laterally toward the other side of the cab 4 so as to cross the rear portion of the cab 4. The driver guard 46 is covered with a cushion cover and is substantially horizontal at a position corresponding to the lower part of the back of the driver H who stands on the driver's cab 4. By entering between the handle 7 and the driver's guard 46 from one side of the left and right, it is possible to get into the cab 4. In the illustrated form, the control tower 9 is configured to be slightly inclined forward in consideration of ease of operation.

  Also in the case of the second embodiment, the control tower 9 including the handle 7, the electric system control unit 8, the lower handle shaft 9B1, the upper handle shaft 9B2, the decorative cover 9C, and the front / rear position adjusting device 70 for the handle 7 as in the first embodiment. With the dynamic configuration, the set state of the control tower 9 including the handle 7 can be changed as in the first embodiment, and the handle 7 can be set to an appropriate state according to the state adapted to the driver and the loaded state.

  FIG. 22 shows a third embodiment of the electric transport vehicle 1 according to the present invention, and FIG. 22 is a front perspective view of a state in which the wheelchair K on which the person H1 is on the electric transport vehicle 1 according to the present invention is loaded on the loading platform 3. It is. The electric transport vehicle 1 of the third embodiment is different from the electric transport vehicle 1 of the first embodiment in appearance including the shapes of the left and right side walls 1A of the loading platform 3, but the electric transport vehicle 1 of the first embodiment is different from the electric transport vehicle 1 of the first embodiment. Similarly, it has a low center of gravity configuration, and since the configuration of each part is the same as that of the electric transport vehicle 1 of the first embodiment, the description thereof is omitted, but the same functional components as those of the first embodiment shown in FIG. Are denoted by the same reference numerals as those in the first embodiment. The wheelchair K is fixed at a predetermined position of the loading platform 3 by a wheelchair fixing tool provided on the flooring 3 </ b> B of the loading platform 3. In this case, the structure which attaches a commercially available wheelchair fixing tool to the flooring 3B of the loading platform 3 is convenient.

  Also in the case of the third embodiment, the rotation of the control tower 9 including the handle 7, the electric system control unit 8, the lower handle shaft 9B1, the upper handle shaft 9B2, the decorative cover 9C and the front / rear position adjusting device 70 of the handle 7 is the same as in the first embodiment. With the dynamic configuration, the set state of the control tower 9 including the handle 7 can be changed as in the first embodiment, and the handle 7 can be set to an appropriate state according to the state adapted to the driver and the loaded state.

  In both the first embodiment and the second embodiment, as in the third embodiment, the wheelchair K on which the person H1 is on the electric transport vehicle 1 can be loaded on the loading platform 3.

  Within the scope of the technical idea of the present invention, the present invention is not limited to the above-described embodiment, and can be applied to the electric conveyance vehicles of various embodiments.

It is a back perspective view showing the basic form containing the chassis structure of the electric conveyance vehicle concerning the present invention. Example 1 It is a front perspective view which shows the basic form containing the chassis structure of the electrically-driven conveyance vehicle which concerns on this invention. Example 1 It is a left view which shows the basic form containing the chassis structure of the electric conveyance vehicle which concerns on this invention. Example 1 It is a front perspective view of the electric conveyance vehicle concerning the present invention. Example 1 It is a back perspective view of the electric conveyance vehicle concerning the present invention. Example 1 It is a perspective view which shows arrangement | positioning of the electric system control part of the control tower provided with the handle | steering-wheel of the electric conveyance vehicle which concerns on this invention. Example 1 It is an upper perspective view which shows the relationship between the chassis frame and exterior member of the electric conveyance vehicle which concerns on this invention. Example 1 It is a perspective view which shows the structure of the handle shaft lower end part of the electric conveyance vehicle which concerns on this invention. Example 1 It is a perspective view which shows the structure of the front-wheel rotation mechanism part of the electric conveyance vehicle which concerns on this invention. Example 1 It is a perspective view which shows the rotation mechanism part of the front wheel of the electric conveyance vehicle which concerns on this invention. Example 1 It is a figure which shows the structure of the front-wheel support part with respect to the chassis frame of the electrically-driven conveyance vehicle which concerns on this invention. Example 1 It is a bottom view which shows the relationship of the supporting member of the front wheel with respect to the chassis frame of the electrically-driven conveyance vehicle which concerns on this invention. Example 1 It is a perspective view of the rear-wheel drive part of the electric conveyance vehicle which concerns on this invention. Example 1 It is a partial enlarged view of the rear-wheel drive part of the electric conveyance vehicle which concerns on this invention. Example 1 It is an electric circuit diagram of the electric conveyance vehicle concerning the present invention. Example 1 It is a rear view of the front-back position adjustment apparatus of the handle | steering-wheel of the electrically-driven conveyance vehicle which concerns on this invention. Example 1 It is a perspective view of the front-back position adjustment apparatus of the handle | steering-wheel of the electrically-driven conveyance vehicle which concerns on this invention. Example 1 It is a side view of the state which inclined the handle of the electric conveyance vehicle concerning the present invention ahead. Example 1 It is the side perspective view which made the handle of the electric conveyance vehicle concerning the present invention fall down. Example 1 It is a front perspective view of the electric conveyance vehicle concerning the present invention in the state where the load was loaded. (Example 2) It is a side view of the electric conveyance vehicle concerning the present invention in the state where a load was loaded. (Example 2) It is a front perspective view of the state where the wheelchair which the person got on the electric conveyance vehicle concerning the present invention was loaded on the loading platform. Example 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 .... Electric conveyance vehicle 1A ... Side wall 2 .... Chassis 2A ... Chassis frame 2C ... Side wall part of chassis frame 2C1, ... Outer wall 3 .... Loading platform 3A ... Loading platform Floor part 3B ... Floor material of the loading platform 3C1 ... Inner side wall of the loading platform 3C2 ... Inner side wall of the loading platform 4 .... Driver's cab 4A ... Floor of the cab 4B ... Floor material of the cab 4C1 .. Inner side wall of cab 4C2 .. Inner side wall of cab 5 ... Front wheel 5A ... Front wheel axle 6 ... Rear wheel 6A ... Rear wheel axle 7 ... Handle 8 ... Electric system control unit 8A ... Lead wire 9 ... Control tower 9B ... Handle shaft 9B1 ... Upper handle shaft 9B2 ... Lower handle shaft 9C ... Decoration cover 10 ... DC motor device for driving 10A, DC motor 10B, output shaft of driving DC motor device 10C ..Gear device 10D ... Clutch device 10D1 ... Clutch lever 10E ... Clutch device switch 11 ... Storage battery 12 ... Forward / backward switch device 13 ... Power switch 14 ... Headlight 15 ... -Taillight 16 ... Switch 17 ... Electrical box 18 ... Rotating body 19 ... Front / rear actuating rod 20 ... Support member 21 ... Vertical axis 22 ... Axle member 23 ... Left and right actuating rods 27 ... rotating body 32 ... cushion material 33 ... gap 35 ... bumper 36 ... guard 37 ... shaft 38 ... speed display unit 39 ... speed setting device 40 ... Speed control device knobs 41, 42 ... Fender part 43 ... horn button 44 ... Storage battery display part 45 ... Left and right side guards 6 ... Guard for driver 50 ... Shaft 51 ... Supporting part 52 ... Angle selection part 53 ... Angle selection hole 53A-53D ... Angle selection hole 54 ... Bearing part 54A -Bearing hole 55 ... Operation lever 56 ... Shaft 57 ... Inclined surface 58 ... Inclined surface 60 ... Coil spring 70 ... Front / rear position adjustment device of the handle

Claims (4)

  A front wheel and a rear wheel are arranged in front and rear positions on both the left and right sides of a chassis with a loading platform arranged on the front side and a cab on the rear side, and the handle for turning the left and right of the front wheel is raised upward and the front side of the cab The left and right rear wheels are supported by the output shafts of the respective DC motor devices attached to the left and right sides of the chassis, and are rotated by the DC motor devices, between the front wheels and the rear wheels. A battery for supplying power to the DC motor is disposed on each of the left and right sides of the chassis, and the operation position of the handle can be changed by changing the mounting angle in the front-rear direction.   A front wheel and a rear wheel are arranged in front and rear positions on both the left and right sides of a chassis with a loading platform arranged on the front side and a cab on the rear side, and the handle for turning the left and right of the front wheel is raised upward and the front side of the cab The left and right rear wheels are supported by the output shafts of the respective DC motor devices attached to the left and right sides of the chassis, and are rotated by the DC motor devices, between the front wheels and the rear wheels. Storage batteries for supplying power to the DC motor are respectively attached to the left and right side portions of the chassis, and the handle is rotatably supported by the chassis, and is tilted backward from the loading platform and stretched onto the loading platform. An electric transport vehicle characterized in that it can be set in a forward tilted state and can be stored in a substantially horizontal state or a lower lying state.   A front wheel and a rear wheel are arranged at the front and rear positions of the left and right sides of a chassis having a loading platform on the front side and a cab on the rear side, and an electric system control unit is provided at the top, and a handle for the left and right turning operation of the front wheel is provided. A control tower protruding left and right is disposed on the rear side of the loading platform and on the front side of the driver's cab, and the left and right rear wheels are supported by output shafts of respective DC motor devices attached to left and right side portions of the chassis. Rotation driven by a DC motor device, storage batteries for supplying power to the DC motor are respectively attached to the left and right side portions of the chassis between the front wheel and the rear wheel, and the front wheels, The vehicle includes a rear wheel and a side wall to which a side cover that covers the storage battery is attached, and the control tower is rotatable in a standing operation state and in a stowed storage state substantially horizontal or lower toward the rear. To be supported, an electric transport vehicle, characterized in that said control column containing the handle is lower than the side walls of the left and right between the side walls mutually of the left and right in the accommodated state.   The control tower including the handle includes a lower handle shaft supported in a left-right rotatable manner within a column fixed to the chassis, the handle connected to an upper end portion, and a lower end portion front and rear of the upper end portion of the lower handle shaft. An upper handle shaft that is pivotably connected in a direction, and a holding device that holds the upper handle shaft in a predetermined position with respect to the lower handle shaft. The holding device operates by operating an operation lever. The shaft selectively fits into one of a plurality of angle selection holes provided in the lower part of the handlebar, the periphery of the upper handle shaft is covered with a decorative cover, and an electric system control unit is disposed above the decorative cover Then, the front wheel is rotated left and right by the rotation of the upper handle shaft and the lower handle shaft accompanying the rotation operation of the handle, and the front handle shaft is moved in front of the lower handle shaft. Electric transport vehicle according to any one of claims 1 to 3, characterized in that a variable the handle position by the rotation direction.

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