JP2801606B2 - Electric vehicle operating device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation device for an electric vehicle such as an electric wheelchair, and to a technique for safely and easily performing various operations of operating a body.

(Prior Art) Conventional operating devices for electric vehicles include a joystick system and a device described in Japanese Utility Model Laid-Open Publication No. Sho 61-5295, but a joystick system requires one change of traveling direction and speed adjustment. Since the operation is performed by operating the lever of the book, the operation is difficult.

Further, in the technology described in Japanese Utility Model Application Laid-Open No. 61-5295, the accelerator lever is simply provided on the rear side of the bar handle, and not only safety considerations are not taken, but also the front side. It is very difficult to operate the accelerator lever on the rear side while holding the handle or to operate the operation switch in this state.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned disadvantages of the prior art,
An object of the present invention is to provide an electric vehicle operating device that is highly safe even when used by elderly people and has good operability.

(Means for Solving the Problems) The center portion of the front handle portion (a) is fixed to the upper portion of the handle shaft 30 for steering the front wheel 21, and the front handle portion (a) is bent and extended rearward from both ends. Handle part (b),
(B) and the handle portions on both sides (b), (b) a rear handle portion (c) bent and extended inward from the end.
(C) together with the loop handle 23, the main part of the operation box 10 including the operation switch and the like is located and provided in a space surrounded by the loop handle 23,
The center portions of the rear handle portions (c) and (c) corresponding to the rear side of the operation box 10 are cut off and opened to form a space 34, the ends of which are configured as grips 35, 35, and further along the front of the grip 35. Thus, an electric vehicle having the throttle lever 3 extending from the operation box 10 is provided.

(Operation and Effect of the Invention) When driving the electric vehicle configured as described above,
The rear handle portions (c) and (c) of the loop handle 23 are cut off and opened at the center, and a space 34 is provided. The grip 35, 35 provided at the end of the loop handle 23 is operated with both hands, and the handle is operated. The direction of the front wheel 21 is changed via the control unit.

The operation box 10 provided with operation switches and the like has its main body positioned in a space surrounded by the loop handle 23,
In addition to being protected from contact with obstacles and other pedestrians, a rear handle portion (c) behind the operation box 10 is cut open at a central portion thereof to provide a space 34. The operation switch of the operation box 10 with the thumb or other finger using the open space 34 while holding the grips 35, 35 provided adjacent to 34, or while slightly relaxing the gripping force and attaching the hand. Can be operated easily and quickly, and it is safe.

Further, the throttle lever 3 for adjusting the speed is disposed along the front of the grip 35 from the operation box 10 and is located in a space surrounded by the loop handle 23, so that the throttle lever 3 is not in contact with obstacles or other pedestrians. While being protected, the operator can easily operate the front throttle lever 3 with the index finger or the middle finger while holding the grip 35.

Therefore, in the present invention, the operation box 10 including the operation switches is provided in the space surrounded by the loop handle 23.
By arranging the throttle lever 3 and the like, the operation members are protected from contact with obstacles and other pedestrians and the like, and safety is ensured.
, The throttle lever 3 arranged along the front of the grips 35, 35 can be easily and safely operated using the forefinger and the middle finger. Similarly, with the grips 35, 35 held or The operation switch of the operation box 10 can be easily operated quickly and securely without erroneous operation via the open space 34 with the gripping method slightly loosened and the hands attached to the grips 35, 35, which is extremely safe. .

(Embodiment) The figure is an example in which the operating device of the present invention is applied to an electric wheelchair. The electric wheelchair includes one front wheel 21 mounted on a chassis 20 and a pair of left and right rear wheels 22,22. It has a three-wheel structure in which the front wheels 21 are steered by a loop handle 23 and the rear wheels 22, 22 are driven and rotated by a motor 7 driven by a power supply from a battery 24.

Reference numeral 25 denotes a rear cover, in which the motor 7 and a gear box 26 for transmitting the rotational power of the motor 7 to the rear wheels 22 are transmitted.

27 is a battery case that has a control box inside
28 and two batteries 24, 24 are mounted and stored.

In addition, the front of the battery case 27
A front cover 31 is provided at the front of the front cover 31 to cover a lower portion of the handle shaft 30. 32 is a light and 33 is a chair.

At the upper end of the handle shaft 30, the front handle portion (a) of the loop handle 23 and the operation box 10 are attached. The loop handle 23 includes a front handle portion (a), side handle portions (b) extending rearward while expanding from both sides of the front handle portion (a), (b) and the side handle portion (b), (B)
The rear handle portions (c) and (c) are bent and extended inward from the end. Further, the rear handle portion (c), the corresponding portion on the rear surface of the operation box 10 in the center (c) is cut off and opened to form a space 34, and grips 35, 35 are formed at its ends.
Are fitted.

The operation box 10 is divided into upper and lower parts. The lower operation box 10a is attached to a flange 36 attached to the upper end of the handle shaft 30, and the mounting base 1 is detachably screwed to the flange 36 with a screw 37. The upper operation box 10b is configured to be detachable from the lower operation box 10a.

On both sides of the mounting base 1, both side frames 2, 2 are erected, and an operation shaft 5 is pivotally supported at the center of the both side frames 2, 2.

The potentiometer 8 is fixed to a mounting plate 38 which cuts and bends a part of the mounting base 1 upward, and also has a gear mounted on its shaft and meshed with the gear mounted on the operating shaft 5 to constitute the transmission mechanism 6. I have.

Vertical cam surfaces 39, 39 are formed on both front and rear sides of one end of the operation shaft 5, and pins 6 protruding from one side frame 2 are formed.
The driven surfaces 41, 41 of a pair of left and right F-shaped rotating arms 40, 40 rotatably supported at 0 are brought into contact with both sides of the cam surfaces 39, 39. A tension spring 42 is hung between the lower portions of the operating shaft 5 and the neutral position returning mechanism 9.
Is configured.

Reference numerals 43, 43 denote rotation restricting plates, which are attached to the long holes 44, 44 of the one side frame 2 with bolts or the like to form an L-shape.
It is configured to regulate the rotation range of 40,40.

Reference numerals 47, 47 denote mounting frames, which stand upward from both sides of the front portion of the mounting base 1 and extend upward and rearward from the upper ends thereof, on which the operation control board 45 can be attached and detached. It is configured in.

In the mating surfaces of both side plates 11, 11 of the upper and lower operation boxes 10b, 10a, through holes 46, 46 for the front handle portion (a) of the loop handle 23 and through holes 12, 46 for the both sides of the operation shaft 5 are provided. 12 is formed.

A connecting portion 4 formed by engraving a screw is formed at both ends of the operation shaft 5 so that a bolt 48 can be fixed to a lower end of the mounting arm 13 of the throttle lever 3. The throttle lever 3
A mounting portion 49 extending in the front-rear direction of the side surface of the operation box 10 and a loop handle bent outward from the rear end of the mounting portion 49.
23 Grip 35 Forward speed adjuster 50 located along the front
And a reverse speed adjusting portion 51 that bends and extends outward from the front end of the mounting portion 49.
13 The upper end is configured to be detachable by screwing means or the like. The reverse speed adjuster 51 is set shorter than the forward speed adjuster 50. 52 is a rubber cap.

53 is a key switch, 54 is a switch for maximum speed change, 55
Is a buzzer switch, 56 is a battery remaining amount meter, and 57 is a rubber bush.

When assembling the operating device,
A transmission mechanism 6 is constituted by rotatably inserting and pivoting the operation shaft 5 between the two, fixing the potentiometer 8 to the mounting plate 38, and meshing gears mounted on the respective shafts.

Next, rotating arms 40, 40 are attached to pins 60 protruding from one side frame 2.
And the driven surfaces 41, 41 of the rotating arms 40, 40 are
A tension spring 42 is hung between the lower portions of the rotating arms 40, 40 in a state of contacting both sides of the cam surfaces 39, 39 to form the neutral position return mechanism 9. The rotation restricting plates 43, 43 are connected to the long holes 44, 44 of the one side frame 2.
Attached to the part, the turning range of the turning arms 40, 40 is set.

Next, while mounting the control board 45 on the mounting frames 47, 47,
The connection with the potentiometer 8 etc. is performed.

Connect the lower operation box 10a to the flange 3 at the upper end of the handle shaft 30.
6After screwing it to the lower surface, attach the mounting base 1 to the handle shaft 30
Attach it to the flange 36 at the upper end with a screw 37. At the time of this mounting, an operating shaft 5 pivotally supported by the mounting base 1
4 and 4 are through holes 12 and 12 of both side plates 11 and 11 of the operation box 10,
The front handle portion (a) of the loop handle 23 also projects outside the operation box 10 through the through holes 46, 46. Next, a key switch 53 is attached to the lower operation box 10a and connected to the operation control board 45.
Then, a buzzer switch 55 and a maximum speed changeover switch 54 are attached, and after connecting the operation control board 45 with a connector or the like, the upper operation box 10b is attached to the lower operation box 10a by screwing or the like.

Next, after screwing the throttle lever 3 to the mounting arm 13, the lower end of the mounting arm 13 is connected to the connecting portions 4, 4 at both ends of the operating shaft 5.
Of these, one side is attached with a bolt 48. In the case of attaching to the other side of the connecting portion 4, if the throttle lever 3 is attached to the mounting arm 13 by inverting the front and rear, the forward speed adjusting portion 50 can be located on the front side of the steering wheel.

As described above, the operation shaft 5, the potentiometer 8, the transmission mechanism 6 between them, the neutral position return mechanism 9 of the operation shaft 5, the operation control board 45, etc. are assembled and adjusted on the mounting base 1 after the operation box. It can be mounted on 10 and the assembly accuracy is greatly improved. Also, it is possible to easily remove the mounting base 1 at the time of inspection and repair.

Furthermore, after assembling the mounting base 1 to the operation box 10,
Since the throttle lever 3 can be attached to the connecting portions 4 and 4 at both ends of the operation shaft 5 via the mounting arm 13, attachment / detachment of the right-hand and left-hand throttle levers is easy.

In addition, the command voltage is changed by rotating the potentiometer 8 via the transmission mechanism 6 by rotating the operation shaft 5 back and forth.
The motor 7 is switched between forward and reverse rotations and the number of rotations is adjusted and stopped. However, cam surfaces 39, 39 are formed at one end of the operation shaft 5, and the cam surfaces 39, 39 are driven by the rotating arms 40, 40. Spring 4 on surfaces 41, 41
2, the operation shaft 5 itself can be forcibly returned to the neutral position, and the neutral position return mechanism 9 is attached to the mounting base 1. By providing one side, a large space such as the potentiometer 8 and the transmission mechanism 6 can be secured on the mounting base 1.

The throttle lever 3 is screwed to a mounting arm 13 attached to the end of the operation shaft 5, extends forward and backward from that position, further extends outward, respectively, and includes a forward speed adjuster 50 and a reverse speed adjuster 51. Are specially configured and are greatly separated in front and back, so that the operator can identify each of them reliably and there is no erroneous operation.

In the embodiment shown in FIG. 7, an operation shaft 5 pivotally supported between both side frames 2, 2 of the mounting base 1 is formed to be slightly shorter than the width of the operation box 10, and both ends of the operation shaft 5 are provided. The connecting portions 4, 4 formed of screw holes are formed, and a connecting shaft 59, which forms a screw shaft 58 at one end, can be inserted and screwed into the connecting portions 4, 4 from outside the operation box 10 through the through holes 12. It is composed. The other end of the connecting shaft 59 has a mounting arm similar to the above-described embodiment.
13 is configured to be able to be bolted to 48.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front sectional view of an essential part, FIG. 2 is a plan sectional view of an essential part, FIG. 3 is a side sectional view of an essential part, and FIG. 5 is a perspective view of a main part, FIG. 5 is a perspective view, FIG. 6 is a side sectional view, and FIG. 7 is a plan sectional view showing another embodiment. In the drawing, reference numeral 1 is a mounting base, 2 is a side frame, 3 is a throttle lever, 4 is a connecting portion, 5 is an operating shaft, 6 is a transmission mechanism, 7 is a motor, 8 is a potentiometer, 9 is a neutral return mechanism, 10
Is an operation box, 11 is a side plate, 12 is a through hole, 13 is a mounting arm, 21 is a front wheel, 23 is a loop handle, 30 is a handle shaft,
34 is a space, 35 is a grip, 39 is a cam surface, 40 is a rotating arm, 50 is a forward speed adjuster, 51 is a forward speed adjuster, (a)
Indicates a front handle portion, (b) indicates a side handle portion, and (c) indicates a rear handle portion.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-96249 (JP, A) JP-A-63-8081 (JP, A) JP-A-61-193881 (JP, U) JP-A-56-9681 31499 (JP, Y2) Jiko 51-5867 (JP, Y2) JP-B43-19982 (JP, B1) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60L 15/00 B62D 63 / 00-63/08

Claims (1)

(57) [Claims] 1. A center portion of a front handle portion (a) is fixed to an upper portion of a steering wheel shaft (30) for steering a front wheel (21), and a side of the front handle portion (a) extending rearward from both ends thereof. The loop handle (23) is formed by the two handle portions (b) and (b) and the rear handle portions (c) and (c) which extend inward from the ends of the handle portions (b) and (b) on both sides. ), And a main part of an operation box (10) having an operation switch and the like is positioned and provided in a space surrounded by the loop handle (23), and the operation box (10) corresponds to a rear side of the operation box (10). The center part of the rear handle parts (c) and (c) is cut open and a space (34) is provided, and the ends thereof are configured as grips (35) and (35), and further along the front of the grip (35). Operation box (10) to throttle lever (3)
An operating device for an electric vehicle that is extended.