JP2000308214A - Steering device for electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent errors in operation due to contact when an operation box touches an obstacle or the like or a driver touches the operation box, when the driver gets on or off a vehicle and at the same time, enable the driver to get on or off the vehicle easily, by positioning the main body part of the operation box to a U-shaped space at the center of a bar handle. SOLUTION: The central part of a bar handle 2 is flexed downward into a U-shape, a large U-shaped space A is formed at the central part, at the same time its lower part is set to a mounting shaft 29 in a crosswise direction, and the mounting shaft 29 is pivoted at a handle post 1 and it is freely turntable back and forth. Also, the height of the bar handle 2 and distance from a chair can be adjusted to the physique of the driver. Then, an upper portion between the U-shaped flex parts of the bar handle 2 is connected by a connection lever that is formed by a round shaft, an operation box 3 with an acceleration lever 8 or the like mounted to the connection box, and the main body part of the operation box 3 is positioned in the U-shaped space A, thus preventing errors in operation due to the contact with an obstacle or the like or the contact by a driver, when he gets on or off the vehicle and at the same time, widening the space between a chair and the handle so that the driver can easily get on or off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an electric vehicle such as an electric tricycle.

[0002]

2. Description of the Related Art Conventionally, a steering device for an electric vehicle has a structure in which an operation box is located in a loop handle so that an operation switch and the like can be protected (Japanese Patent No. 2801605).
There is one in which an operation box is directly attached to a bar handle (Japanese Patent Laid-Open No. 61-5295). Patent No. 2801605
The technology described in Japanese Patent Application Publication No. H11-205703 accommodates an operation member such as an operation box in a loop handle, and is superior in the protection function and operability of the operation member, but is expensive and lacks a light feeling, and has a A large space is required, and there is a disadvantage that the space between the chair and the rear chair is narrow when the vehicle is constructed in a compact body. In the technology described in Japanese Utility Model Laid-Open Publication No. Sho 61-5295, a bar handle structure is used, and the body can be compactly configured. Since the accelerator lever is provided so as to protrude, there is a great risk that the operator may contact these members when boarding or disembarking, perform erroneous operations, or contact other obstacles.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned disadvantages of the prior art, and is compact and operable.
Another object of the present invention is to provide a control device for an electric vehicle that is easy to get on and off.

[0004]

The bar handle 2 has a central portion bent in a U-shape, and a lower portion thereof is pivotally supported by a handle post 1 without a mounting shaft 29 so as to be able to pivot back and forth, and a U-shaped bent portion. The upper portion is connected by a connecting rod 41, and an operation box 3 having an accelerator lever 8 and the like is attached to the connecting rod 41, and a main portion of the operation box 3 is located in the U-shaped space A. The structure of the control device for the electric vehicle will be used.

[0005]

The bar handle 2 has a central portion bent downward in a U-shape to form a large U-shaped space A in the central portion, and a lower portion formed by a horizontal mounting shaft 29 at the lower portion. The mounting shaft 29 is pivotally supported on the handle post 1 so as to be pivotable back and forth, so that the height of the bar handle 2 and the distance from the chair can be adjusted according to the physique of the operator. Further, the upper portion between the U-shaped bent portions of the bar handle 2 is connected by a connecting rod 41, the operation box 3 including the accelerator lever 8 and the like is attached to the connecting rod 41, and the main part of the operation box 3 is It is configured to be located in a space A having a U-shape. Therefore, the accelerator lever 8, the key switch 58, etc.
An operation box 3 provided with various operation switches has its main body located in a U-shaped space A in the center of the bar handle 2, and erroneous operation due to contact with an obstacle or the like when the operator gets on or off the board. Danger can be prevented, and the space between the chair 16 and the handle 2 can be widened to easily get on and off.
Also, when the position of the bar handle 2 is adjusted according to the physique, the lower handle post 1 is fixed,
The foot space for getting on and off can always be kept wide.

[0006]

FIG. 1 shows an embodiment in which the device of the present invention is applied to an electric three-wheeled vehicle.
One pipe is bent into a U-shape, and the left and right sides are formed as side frames 9 and 9, and the front loop is bent upward to form the mounting portion 11 of the front wheel steering unit 10. And mounting brackets 12 and 12 at the rear open end.
, The rear wheel drive unit 13 is attached. Support pipes 14 and 14 are welded to the upper surface of the left and right side frames 9 and 9 slightly rearward in the front-rear direction to be inclined rearward and upward. The mounting rods 17, 17 on the lower surface of the chair 16 are fitted into the upper end thereof. 18 is a fixture,
The height of the chair 16 is adjusted and fixed. The chair 16 is formed in a trapezoidal shape with a tapered front portion to facilitate getting on and off. In addition, the pipes 20 and 20 project outward from both sides of a rear portion of the mounting frame 19 to bypass both sides of the chair 16 and to move forward and upward. The chair 16 is bent back and out around the center of the chair 16 in the front and rear direction to form the armrests 21 and 21, and the backrest 22 is bent inward at the rear of the chair 16 and the backrest 22 is attached. It is.

The front wheel steering unit 10 includes one front wheel 24.
And a steering system for the front wheels 24. Front wheels 2 are provided at the lower ends of the two handle shafts 25, 25 made of pipe material.
4 is rotatably mounted on the shaft, and brackets 26, 26 each having an inverted triangular shape in plan view are welded to the two handle shafts 25, 25 at two slightly upper positions thereof, and the apexes thereof are attached to the two handle shafts 25, 25. It protrudes backward. Reference numeral 27 denotes a bearing, which is welded to the mounting portion 11 at the front portion of the side frames 9 and 9 with a caster angle so as to be inclined rearward. The upper and lower surfaces of the bearing 27 are sandwiched between the upper and lower brackets 26 and 26. Bracket 26,
The front wheel 24 is steerably connected by a pivot 28 passing through the bearing 26 and the bearing 27. The handle post 1 is made of an aluminum casting and is divided into upper and lower members 36 and 37, and two handle shafts 25 and 25 are inserted and screwed to the lower member 37 thereof. In the mating surface of the upper and lower members 36 and 37 of the handle post 1, a center of the bar handle 2 is bent into a U-shape, and a fitting groove 30, which can be fitted with a mounting shaft 29 formed thereunder. Reference numeral 30 is formed in the width direction so that the angle of the bar handle 2 can be adjusted. The mounting shaft 29 is provided with a pin 31 protruding downward, and is fitted to a longitudinal groove 32 formed forward and backward at the center of the fitting groove 30 of the lower member 36 of the handle post 1. The end limits the range of forward and backward rotation of the bar handle 2 between a substantially upright position and a position near the upper surface of the chair 16 at the rear. In addition, the vicinity of the center of the fitting grooves 30 is slightly cut to reduce the frictional resistance when the mounting shaft 29 rotates. On both sides of the front part of the lower member 36 of the handle post 1, there are formed cylindrical portions 34, 34 forming insertion holes 33 in the lateral direction, and cylindrical recesses 35 are formed between the left and right cylindrical portions 34, 34. ,
Further, a cylindrical portion 34 having an insertion hole 33 at the center corresponding to the lower member 36 is formed on the opposing mating surface of the upper member 37, and cylindrical concave portions 35 are formed on both sides thereof.
The mating surfaces 7 are fitted so that the pins 38 can be inserted into the insertion holes 33 from the side. The upper and lower members 36,
The rear side of the upper member 36 is pivoted around the front pin 38 by protruding the rear side of the 37 and providing a through bolt 39 penetrating them vertically and tightening with a nut 40 with a handle. The bar handle mounting shaft 29 that fits into the grooves 30, 30 can be tightened and fixed. As described above, the bar handle 2 has a central portion bent in a U-shape to form a large U-shaped space A in the central portion. The upper part between the U-shaped bent portions is connected by a connecting rod 41 formed of a round shaft, and the left and right mounting plates 4
The lower case 43 of the operation box 3 is screwed to the lower bent portion of the lower case 2 and 42, which are fixed obliquely downward toward the rear. At the upper and lower substantially intermediate portions of the left and right mounting plates 42, 42,
The operation shaft 5 is rotatably held. The left mounting plate 42 is extended forward, and a potentiometer 4 for generating a speed command signal of the electric vehicle is attached to the extended portion. The gear 45 is engaged with the wearing gear 45. Further, the pin 23 attached to the operating shaft 5 and the connecting rod 4
A torque spring 46 is wound around the fitting groove 1 and
The operation shaft 5 is always stopped at the neutral position by the stopper 47.
It has bounced towards. The stopper 47 is composed of a bolt attached to a mounting plate 48 bent rightward from the front end of the left mounting plate 42, and is configured to be able to adjust its contact position. 61 is a reinforcing plate, which is welded to the connecting rod 41,
The lower case 43 is screwed. The operating shaft 5 is suspended between mounting plates 42, 42 obliquely provided rearward from a connecting rod 41 arranged substantially linearly with the bar handle 2. Is located on the rear side, and furthermore, both ends thereof project from the through-holes on both sides of the lower case 43 to the outside of the operation box 3, and the extension thereof is bent forward and outward to form the operating rod 6 which bypasses below the bar handle 2. In addition, the accelerator lever 8 is bent outward and upward to be along the grip 7. Therefore, the operating device is disposed near and below the bar handles 2, 2 so that the projecting amounts of the operating lever 6 and the accelerator lever 8 are made as short as possible. In addition, contact with other obstacles can be minimized, which is safe. The operation shaft 5 is divided between the operation shaft 3 and the operating lever 6 at the position outside the operation box 3 so that the operation shaft 5 can be freely fitted and detached, and is bolted. or,
The accelerator lever 8 has a stopper function for restricting the maximum operation position of the accelerator lever 8 by abutting the grip 7 on the inner side in the length direction, so that it is not necessary to provide a special stopper, and the accelerator lever 8 is relatively Since the regulation is performed at a position close to the operation box 3, variations in the rotation range due to manufacturing errors of the constituent members can be reduced. Further, the accelerator lever 8 is
Since the inner half of the length of the grip 7 is contacted in parallel and the outer half is separated from the grip 7 to restrict the rotation range, the regulation is reliable and the grip 7
If the outer portion is grasped together with the accelerator lever 8, the accelerator lever 8 has a slight elastic force, and the operation feeling is good. The lower case 43 of the operation box 3 is configured such that the left portion in plan view is longer in the front-rear direction and the front-rear width of the right portion is shorter, and the left portion is provided with an LED lamp, which is a battery meter, on the connecting rod 41 via a mounting frame 48. The display substrate 49 provided is attached. The lower case 43 is formed in a funnel shape with a narrowed down portion, and has an insertion port 50 for a wiring cord provided at a lower portion thereof, and the insertion port 50 is used as a drainage port and a ventilation port. On both sides of the connecting rod 41, annular grooves 51, 51 are formed, and the upper case 52 and the lower case 43 of the operation box 3 are formed.
The semi-circular cutouts formed on both side plates are fitted from above and below to prevent rainwater intrusion. Upper case 52
Corresponds to the lower case 43, the left portion is longer in the front-rear direction (L), the front-rear width of the right portion is shorter (l), and the left-right width is longer than them to be horizontally long. (2) The main part is placed in the lower case 4 in the U-shaped space A at the center.
It is located with 3. Reference numeral 53 denotes a display window, which is formed of a transparent material and is located on the central inclined surface 54 of the upper case 52, so that the LED lamps on the display substrate 49 can be viewed. Reference numeral 55 denotes a knob for setting the maximum speed, which is configured so that the potentiometer 56 can be adjusted by rotating the knob. Reference numeral 57 denotes a forward / reverse changeover switch. These are front upper surfaces of the left portion of the upper case 52. It is provided in. Reference numeral 58 denotes a key switch, which is provided on a substantially vertical surface on the front side of the right side of the upper case 52. Therefore, it does not protrude from the left side portion of the upper case 52, and does not hinder getting on and off. Reference numeral 59 denotes an emergency stop switch, which is provided on the upper surface of the right side portion. When an emergency stop is performed during traveling, when the operation is performed, the power to the motor 66 is cut off to stop the electric vehicle. When the emergency stop switch 59 is operated while stopped, the electromagnetic brake provided on the shaft of the motor 66 is released to enable manual driving. In this way, various operation switches are connected to the upper case 5
2 It is provided on the upper surface or at a position where it does not protrude, so that it does not interfere with getting on and off. Rear wheel drive unit 13
Are connected to the rear wheels 63, 63 via the side frames 9, 9 and the L-shaped bracket 12 welded to the rear of the reinforcing pipe 60.
An axle case 64 is mounted, and a gear box 65 containing a differential device and a motor 6 are mounted in the center of the axle case 64.
6 are provided integrally. 67 is a bumper,
The gear box 65 is welded to the side frames 9 and 9 and the brackets 12 and 12 and extends rearward, and supports the gear box 65 at the front and rear middle. Reference numeral 68 denotes a battery, 69 denotes a controller storage case, which is provided below the step 70.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view.

FIG. 3 is a front view.

FIG. 4 is a plan view of an operation unit excluding an upper case.

FIG. 5 is a side sectional view of an operation unit.

FIG. 6 is a side sectional view of a handle rotating portion.

FIG. 7 is a plan view of a rear wheel drive unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle post 2 Bar handle 3 Operation box 8 Accelerator lever 29 Mounting shaft 41 Connecting rod A U-shaped space

Continued on front page F-term (reference) 5H115 PA01 PA08 PC06 PG04 PI13 PI29 QE10 QH08 QI07 TZ07 UI15

Claims (1)

[Claims] A bar handle (2) has a central portion bent in a U-shape, and a lower portion thereof is used as a mounting shaft (29) to pivotally support a handle post (1) so as to be able to rotate back and forth. The upper part is connected by a connecting rod (41), and the connecting rod (4
An operation box (3) provided with an accelerator lever (8) and the like is attached to 1), and a main part of the operation box (3) is located in the U-shaped space (A). apparatus.