JP2017196294A - Battery-mounted device of electric wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that an electric wheelchair includes a large-weight battery at a low position and makes a center of gravity as low as possible, thereby facilitating getting-on/off of a driver and having a form of stabilizing travel of a car body, however, consequently, a battery base surface becomes deeper in a lower side of a step floor surface, thereby making it hard to take the battery in/out and making the operation troublesome.SOLUTION: An electric wheelchair comprises: a battery room 9 for storing a battery 2 at a front-part lower side of a front driver's seat 1; a waterproof wall strip 12 formed of a front wall plate 10 and a rear wall plate 11 into a projecting cross-sectional shape and an appropriate height, at a rear end of a step floor 5 in a front-side peripheral part of the battery room 9; and a battery guide 15 formed inside the battery room 9 of the waterproof wall strip 12, the battery guide inclined forward and upward from a battery base 13 side of a bottom part to a top face 14 of the waterproof wall strip 12 so as to slidingly guide the battery 2 while supporting the bottom part thereof.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a battery-mounted device for an electric wheelchair, and facilitates an operation of attaching and detaching a heavy battery in a battery room in a low-position arrangement form formed on the lower side of a driver's seat.

  A technology that makes it easy to attach and detach a battery to and from the battery room and the case by providing a battery case that houses the battery in the battery room below the driver's seat so as to be movable in the horizontal direction along the upper surface of the step floor (for example, Patent Document 1) See).

JP 2003-235905 A

  The electric wheelchair has a configuration in which a heavy battery is mounted at a low position so that the position of the center of gravity is lowered as much as possible to facilitate getting on and off of the driver and to stabilize the running of the vehicle body. For this reason, if the battery base at the bottom of the battery room is set to a position below the step floor, the stability of the vehicle body can be improved and the battery can be mounted stably without being moved, but the battery base surface is lower than the step floor surface. It becomes difficult to put in and take out the battery, and the maintainability tends to deteriorate.

  According to the first aspect of the present invention, a battery 2 and an electric motor 3 are arranged below the driver's seat 1, and the rear wheel 4 is driven by the motor 3. 1 is a battery-mounted device for an electric wheelchair in which a steering wheel 7 for steering the front wheel 6 and a handle post 8 are disposed on the front portion of the step floor 5 and driving the vehicle. A battery room 9 for housing the battery 2 is formed, and the rear end of the step floor 5 at the front peripheral portion of the battery room 9 is appropriately formed in a convex cross-sectional form from the front wall plate 10 and the rear wall plate 11. A waterproof wall strip 12 having a height is formed. Inside the battery room 9 of the waterproof wall strip 12, the bottom of the battery 2 is inclined upward from the battery base 13 side to the top surface 14 of the waterproof wall strip 12. Support sliding guide The configuration of the electric wheelchair battery mounting device characterized by the formation of the battery guide 15.

  The driver puts his / her feet on the upper surface of the step floor 5 and travels while holding the front handle 7 in a posture seated on the driver's seat 1. By driving the motor 3 by the battery 2 mounted in the battery room 9 below the driver's seat 1, the rear wheel 4 is rotated and travels, and the steering wheel 7 is steered to steer the front wheel 6. When the battery 2 is attached to or detached from the battery base 13 at the bottom of the battery room 9, the battery cover 16 is opened from the waterproof wall strip 12. When taking out the heavy battery 2 from the upper surface of the battery base 13 to the front side, the bottom of the battery 2 or the front of the bottom is supported on the inclined edge of the battery guide 15 formed inside the battery room 9 of the waterproof wall plate 12. , Guide the drawer to the upper front. Further, when the battery 2 taken out from the top surface 14 of the waterproof wall strip 12 to the front side in this way is accommodated and installed on the battery base 13 of the battery room 9 again, the bottom of the battery 2 is placed on the top surface 14. The battery is mounted on the upper surface of the battery base 13 by being placed on the upper surface of the battery base 13 and supported on the inclined edge of the battery guide 15.

  According to the second aspect of the present invention, a step portion 18 is provided on the outer periphery of the top portion of the waterproof wall strip 12, and the cover edge 17 at the lower end of the front periphery of the battery cover 16 is fitted to and supported by the step portion 18.

  The battery cover 16 that closes the battery room 9 is fitted and supported by the cover edge 17 at the lower end of the front periphery to the outer peripheral portion of the waterproof wall strip 12, that is, the step 18 formed on the front wall plate 10. Therefore, the cover and density of the battery cover 16 can be easily maintained high, and the cover configuration can be made light and thin. The step floor 5 on the front side of the waterproof wall strip 12, the battery cover 16 and the like are exposed to rain water, washing water and the like, but the waterproof property between the step 18 and the edge of the battery cover 16 and the front wall The waterproof effect to the inside of the battery room 9 is maintained highly by the integral structure with respect to the step floor 5 surface of the waterproof wall strip 12 which formed the board 10. FIG.

  According to the first aspect of the present invention, the waterproof wall strip 12 is formed in a convex cross-sectional shape, and the battery cover 16 fitted to the upper side can be supported in a stable state, and the battery cover 16 is light and thin. It can be in the form. And since the battery guide 15 of the front rising inclination is formed in the inside of this battery room 9 from the battery base 13 to the top wall 14 of the waterproof wall strip 12, at the time of loading and unloading operation of the heavy battery 2, the battery The two bottom portions are slidably guided by the battery guide 15 so that they can be taken out and attached smoothly and easily. In addition, the structure of the waterproof wall strip 12 can increase the rigidity and strength of the step floor 5 and can increase the front lower edge of the battery cover 16 to maintain high waterproofness. Moreover, the position of the battery base 13 inside the battery room 9 can be set deeply, the center of gravity of the vehicle body can be lowered, and stable running operation can be performed.

  According to a second aspect of the present invention, a step portion 18 for receiving the cover edge 17 at the lower end of the battery cover 16 is formed on the front wall plate 10 portion outside the top portion of the waterproof wall strip 12 at the rear side portion of the step floor 5. Therefore, the battery cover 16 covers the top surface 14 of the waterproof wall strip 12 and maintains a high waterproof property. In addition, the top surface 14 is easily damaged when the bottom portion of the battery 2 is contacted and slid when the battery 2 is loaded or taken out. However, the step 18 located on the front side of the top surface 14 is not damaged. By fitting the cover edge 17 at the lower end, the sliding scar on the top surface 14 is not visible from the appearance, and has a concealing effect.

The side view of an electric wheelchair. The front view. The plan view. The side view which shows the battery room part and the taking-out state of a battery. The expanded side sectional view of a waterproof wall strip.

  Based on the drawings, a floor panel is laid on the upper side surface of the vehicle body frame 34 to form a step floor 5, and a battery room 9 for accommodating the battery 2, the electric motor 3, etc. is provided on the rear side of the step floor 5. The driver's seat 1 on which the driver sits is provided on the upper side of the battery room 9 so as to be able to turn left and right. Further, at the front end portion of the step floor 5, a handle post 8 having a handle 7 which can be steered and rotated at the upper end portion, and a handle post cover 24 standing on both the left and right sides of the handle post 8 are configured. To do.

  At the rear end of the frame 34, a pair of left and right rear wheels 4 are mounted on an axle 35, and a gear transmission mechanism in a transmission case 36 is provided by a motor 3 via a controller 45 disposed at the rear of the battery room 9. Etc. to drive and drive through rotation. A battery base on which the battery 2 can be placed and fixed at the same height as the front step floor 5 or at a position lower than the step floor 5 at the bottom of the battery room 9 covered with the rear cover 19, the battery cover 16 and the like. 13, and the motor 3, the transmission case 36, and the like are arranged and configured on the rear side of the battery base 13.

  A waterproof wall strip 12 is formed on the outer periphery of the battery room 9 so as to stand at the rear end portion of the step floor 5 portion. The rear end of the frame 34 is provided with rear fenders 38 on both the left and right sides to cover the upper periphery of the rear wheel 4. The rear wall of the waterproof wall strip 12 extends over the front periphery of the rear fender 38. The side cover 40 having a configuration in which the end portion is extended is configured, and the battery cover 16 and the cover edge 20 of the rear cover 19 are closed and fitted so as to cover the waterproof wall strip 12 and the top portion of the side cover 40. .

  The battery cover 16 that covers the waterproof wall 12 on the frame 34 and the rear cover 19 behind the battery cover 16 pass through the seat shaft hole 42 portion into which the seat shaft 41 that rotatably supports the driver's seat 1 is fitted. The front and rear can be divided. Each battery cover 16 and rear cover 19 is configured to be detachable from the frame 34 side member by a set bolt or the like.

  A pair of left and right rear wheels 4 are mounted on the rear axle 35 at the rear end of the vehicle body frame 34, and the motor 3 above the transmission case 36 is connected via a controller 45 disposed at the rear upper part of the battery room 9. To drive the rear wheel 4 through a gear transmission mechanism in the transmission case 36 and so on. A battery base 13 is provided at the bottom of the battery room 9, and a pair of left and right batteries 2 can be placed side by side and fixed. A front cover 16 is provided so as to cover the front and upper portions of the battery base 13. In the controller room 37 at the rear of the battery room 9, a controller 45 is disposed on the upper surface of the room base 39 at the bottom, and a rear cover 19 is provided so as to cover the upper part. The transmission case 36 with the motor 3 attached to the upper part is installed on the rear side of the battery room 9 and below the controller room 37.

  The battery base 13 at the bottom of the battery room 9 covered with the battery cover 16 or the like is formed at the same height as the front step floor 5 or at a position lower than the step floor 5. In the loading / unloading, the upper battery cover 16 is removed or opened, and the loading / unloading is performed from the upper surface side of the front step floor 5. In this case, the driver's seat 1 above the battery cover 16 can be moved, rotated, or removed to an upper position or a rearward posture so as not to obstruct the operation of inserting and removing the battery 2.

  The waterproof wall strip 12 formed on the upper surface of the step floor 5 is made of resin and formed into a convex cross-sectional shape in a side sectional view, and this bottom surface is superposed on the upper surface of the step floor 5 and attached to the frame 34 side. Yes. The top surface 14 of the waterproof wall strip 12 is formed in an inverted U-shape, and the thickness of the cover edge 17 of the battery cover 16 fitted to the top of the front wall plate 10 along the front side surface portion. A substantially corresponding step portion 18 is formed. The cover edge 17 of the battery cover 16 bulges to the front side with a small allowable interval, and is formed in a step different from the upper surface of the battery cover 16 so that the degree of fitting of the battery cover 16 to the waterproof wall strip 12 is made uniform.

  The step floor 5 is configured by laying a resin material on the upper side of the vehicle body frame 34. The handle post 8 is erected on the front end of the step floor 5, and the handle post 8 is sandwiched from the front and rear. The lower end portion of the handle post cover 24 including the front cover 25 and the rear cover 26 is fixed upright. The lower end portion of the handle post cover 24 is connected to the outer front fender 47 so as to stably support the step floor 5, the handle post cover 24, and the like. Further, the front side of the handle post cover 24 has a front cover 25 formed with an upper edge portion 31 and a bottom edge portion 32, and is formed in a U-shape when viewed from the side. The bucket 28 is fitted and attached to the front side. The front cover 25, the rear cover 26, and the bucket 28 of the handle post cover 24 are overlapped with the left and right side edges 29 and fixed together by tightening screws 30 to increase the rigidity of the handle post cover 24. Stabilizes the operation of the handle 7.

  In the present invention, a battery 2 and an electric motor 3 are arranged below the driver's seat 1 to drive the rear wheel 4 with the motor 3 and travel. In the front part, in the battery-mounted device of the electric wheelchair that runs by driving the steering wheel 7 and the steering wheel post 8 on the front part of the step floor 5, The battery room 9 that houses the battery 2 is configured, and the rear end portion of the step floor 5 at the front peripheral portion of the battery room 9 is appropriately raised in a convex cross-sectional form from the front wall plate 10 and the rear wall plate 11. The waterproof wall strip 12 is formed, and the bottom of the battery 2 is supported on the inside of the battery room 9 of the waterproof wall strip 12 from the bottom of the battery base 13 to the top surface 14 of the waterproof wall strip 12 with a front rising slope. Sliding guide Forming the battery guide 15 Noh. This battery guide 15 is formed by arranging triangular plates 51 having a forwardly rising inclined edge inside the waterproof wall strip 12 and the battery room 9 at appropriate intervals along the lateral direction. The side surface is configured to be supported.

  The driver puts his / her feet on the upper surface of the step floor 5 and travels while holding the front handle 7 in a posture seated on the driver's seat 1. By driving the motor 3 by the battery 2 mounted in the battery room 9 below the driver's seat 1, the rear wheel 4 is rotated and travels, and the steering wheel 7 is steered to steer the front wheel 6. When the battery 2 is attached to or detached from the battery base 13 at the bottom of the battery room 9, the battery cover 16 is opened from the waterproof wall strip 12. When taking out the heavy battery 2 from the upper surface of the battery base 13 to the front side, the bottom of the battery 2 or the front of the bottom is supported on the inclined edge of the battery guide 15 formed inside the battery room 9 of the waterproof wall plate 12. , Guide the drawer to the upper front. Further, when the battery 2 taken out from the top surface 14 of the waterproof wall strip 12 to the front side in this way is accommodated and installed on the battery base 13 of the battery room 9 again, the bottom of the battery 2 is placed on the top surface 14. The battery is mounted on the upper surface of the battery base 13 by being slidably guided to the inclined edge of the battery guide 15 so as to be pushed into the inside of the battery room 9.

  Further, a step portion 18 that is recessed toward the rear wall plate 11 is provided on the outer peripheral portion of the top portion of the waterproof wall strip 12, and the cover edge 17 at the lower end of the front periphery of the battery cover 16 is fitted to and supported by the step portion 18. The configuration.

  The battery cover 16 that closes the battery room 9 has the cover edge 17 at the lower end of the front periphery fitted and supported by the step 18 formed on the front wall plate 10 of the waterproof wall strip 12. It is easy to maintain a high lid density and density, and the cover structure can be made light and thin. The step floor 5 on the front side of the waterproof wall strip 12, the battery cover 16 and the like are exposed to rain water, washing water and the like, but the waterproof property between the step 18 and the edge of the battery cover 16 and the front wall The waterproof effect to the inside of the battery room 9 is maintained highly by the integral structure with respect to the step floor 5 surface of the waterproof wall strip 12 which formed the board 10. FIG.

DESCRIPTION OF SYMBOLS 1 Driver's seat 2 Battery 3 Motor 4 Rear wheel 5 Step floor 6 Front wheel 7 Handle 8 Handle post 9 Battery room 10 Front wall board 11 Rear wall board 12 Waterproof wall strip 13 Battery base 14 Top surface 15 Battery guide 16 Battery cover 17 Cover edge 18 steps

Claims (2)

  A battery (2) and an electric motor 3 are arranged by the battery (2) below the driver's seat (1), the rear wheel (4) is driven by the motor (3), and the vehicle travels. A battery of an electric wheelchair that is operated by driving a steering wheel (7) and a steering wheel post (8) for steering the front wheel (6) on the front part of the step floor (5) at the front part of the seat (1). In the mounting device, a battery room (9) for accommodating the battery (2) is formed below the front part of the driver seat (1), and the rear end of the step floor (5) at the front peripheral part of the battery room (9) A waterproof wall strip (12) having an appropriate height is formed in a convex cross-sectional form from the front wall plate (10) and the rear wall plate (11), and the battery room (9) of the waterproof wall strip (12) is formed on the portion. ) Inside the waterproof wall strip (12) top from the bottom battery base (13) side In up-ramp front over the surface (14), the battery (2) bottom electric wheelchair battery mounting device characterized by the formation of the supporting and sliding guide possible battery guide (15) a.   A step (18) is provided on the outer periphery of the top of the waterproof wall strip (12), and the cover edge (17) at the lower end of the front periphery of the battery cover (16) is fitted to and supported by the step (18). The battery-mounted apparatus of the electric wheelchair of Claim 1 characterized by these.

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