JP3110519B2 - Lead wire arrangement structure for electric motorcycle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring structure for a lead wire of an electric motorcycle, for example, a power line for supplying electric power to a driving motor or a signal line for extracting a rotation speed signal.
In particular, the present invention relates to an improvement in a lead-out position and a lead-out direction of a lead wire, which does not cause a decrease in durability due to a vertical swing of a motor unit and can improve assemblability.

[0002]

2. Description of the Related Art In an electric motorcycle, necessary power is supplied from a vehicle-mounted battery to a driving motor via a power line, and a rotation speed signal of the motor is taken out via a signal line. The lead wire for supplying power or the like is conventionally connected to a drive motor portion of a motor unit in which a drive motor and a transmission case are integrated. In this case, in order to shorten the lead wires as much as possible and reduce the cost, it is considered advantageous to take out the lead wires in a direction perpendicular to the transmission case.

[0003]

The above-mentioned power line for supplying electric power to the drive motor has a large diameter and a large rigidity as compared with a flywheel magneto lead wire connected to a normal engine unit. Has been adopted. Therefore, when a power line or the like is taken out in a direction perpendicular to the transmission case as described above, an excessive bending force acts on the power line or the like due to the vertical swing of the motor unit, and the power line or the like is broken by fatigue bending. It is conceivable that the equal life is shortened.

The present invention has been made in view of the above-mentioned conventional circumstances, and can prevent an excessive bending force or the like from acting on a lead wire such as a power line or a signal line, thereby extending the life of the lead wire. It is an object of the present invention to provide a lead wiring structure for an electric motorcycle.

[0005]

SUMMARY OF THE INVENTION The present invention provides a drive motor disposed in the vehicle width direction and a transmission case extending rearward from the vehicle in one end in the vehicle width direction and supporting the rear wheel inside the rear end. In a lead wire routing structure of an electric motorcycle in which a front end portion of a unitized motor unit is pivotably supported by a body frame so as to be able to swing up and down, the drive motor on the outer peripheral surface at the other end of the drive motor A lead wire connecting portion is provided above a straight line connecting the motor shaft and the rear wheel shaft and is inclined backward or forward with respect to a perpendicular perpendicular to the straight line, and the lead wire is attached to or detached from the lead wire connecting portion. It is characterized in that it is freely connected, and the lead wire is inclined backward or forward with respect to the vertical line and taken out.

[0006]

According to the lead wire laying structure of the present invention, the lead wire is taken out from the upper side of the outer peripheral surface of the driving motor near the pivot of the motor unit and obliquely rearward or forward. Even if the wire has a large diameter and high rigidity, it is easily deformed with the vertical swing of the motor unit, and no excessive bending force is exerted especially on the vicinity of the motor unit connection portion of the lead wire. That can improve the durability of the lead wire and extend the life. A connecting portion is provided at the other end of the outer peripheral surface of the driving motor (the end opposite to the transmission case), and a lead wire is detachably connected to the connecting portion. The drive motor can be shared by appropriately selecting the size, the continuity test and the like of the drive motor can be easily performed, and the maintainability can be improved.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIGS. 1 to 10 are views for explaining a lead wiring structure of an electric motorcycle according to an embodiment of the present invention. FIGS. 1, 2 and 3 are side views, plan views, and exploded rear views, respectively. 4 and 5 are sectional views taken along line IV-IV and VV of FIG.
6 and 7 are perspective views of a battery box, FIG. 8 is a wiring diagram of a battery, and FIGS. 9 and 10 are a side view and a plan view of an electric motorcycle having the structure of the present embodiment.

In FIG. 1, reference numeral 1 denotes an electric motorcycle employing the structure of the embodiment, and a body frame 2 of the electric motorcycle is a so-called underbone type having the following configuration. An upper end of a main frame 4 extending downward is fixed to the head pipe 3, and front ends of a pair of left and right side frames 5, 5 are connected to the lower end of the main frame. This both side frames 5
The front part is bent downward in a substantially U-shape in side view to form a bent part 5a, and the rear part is extended upward and rearward to form a seat rail part 5b. And the bending portion 5
The front corner portions and the rear corner portions are connected by a front cross pipe 6 and a rear cross pipe 7, respectively.

A steering shaft 9a of a front fork 9 for pivotally supporting the front wheel 8 is supported by the head pipe 3 of the body frame 2 so as to be steerable left and right, and is steered to the upper end of the steering shaft 9a. The handle 10 is fixed. A motor unit 11 is pivotally supported at the connecting portion between the bent portion 5a of the vehicle body frame 2 and the rear cross pipe 7, and a rear wheel 12 is supported at a rear end of the unit 11. . A cushion unit 13 is interposed between the rear end and the rear end of the seat rail 5b.

The front fork 9 is bent at a bent portion 5a by a front cover 14a and a leg shield 14b.
The portion is surrounded by the foot board 15a and the under cover 15b, and the peripheral portion of the seat rail portion 5b is surrounded by the side cover 16. The above footboard 1
5a is a rear edge 14c of the leg shield 14a, a front edge 16a of the side cover 16, and an under cover 15b.
It is arranged so as to cover the opening defined by the upper edge 15c from the upper side. As a result, a low floor footrest portion A is formed.

A charging port 16c is formed in the side cover 16 between the seat rails 5b.
The charging port 16c can be opened and closed rearward by an opening / closing lid 16b. In the charging port 16c, a charging terminal 23 is provided so as to face outward. The charging terminal 23 is fixed on a bracket 23a provided between the seat rails 5b.

A seat bracket 17 is fixed to the front end of the seat rail 5b of the left and right side frames 5. The bracket 17 is attached to the side cover 1.
6, and the seat 18 is mounted on the protruding end. The opening / closing lid 16b can be opened and closed without interfering with the bottom of the seat 18.

A control case 19 made of sheet metal is disposed between the seat rails 5b, 5b.
b and welded. The control case 19 has a substantially U-shape that opens upward, and a support plate 19b extending in a shelf shape is fixed to the bottom surface on the left and right sides outward. 19c is a lightening hole for lightening.

The left and right battery boxes 20 are mounted on the support plate 19b. Each of the battery boxes 20 has a box shape that opens to the left and right, and a boss portion 20 a formed on the upper surface of each of the battery boxes 20 is supported by a support bracket 19 of the control case 19.
a.

A control unit 21 is housed in the control case 19. In the left and right battery boxes 20, left and right batteries 27 and 28 have positive and negative terminals 27a, 27b and 28a, respectively.
28b is accommodated and mounted facing outward in the vehicle width direction (see FIG. 8). The left and right batteries 27 and 28 are fixed at both ends by a holding band 24 locked to a locking piece 20c of the battery box 20.

A front battery box 33 is disposed in a portion surrounded by the bent portions 5a, 5a of the left and right side frames 5 and the front and rear cross pipes 6, 7. The foot board 15a surrounds the left, right, and lower sides with an under cover 15b. The front battery box 33 has a box shape with an open top. Brackets 33a and 33b formed on the outer surfaces of the front and rear walls are fixed to the front and rear cross pipes 6 and 7 by bolts. In the center of the bottom wall, a partition 33c is integrally erected, and the rubber ring 26 for buffering is fitted to the partition 33c. A positioning piece 33f is formed on each of the front side of the left wall and the rear side of the right wall, and a wiring cutout 33d is formed at the center.
In addition, 33e is a latching piece for latching the battery fixing rubber band.

In the front battery box 33, front,
A pair of rear batteries 31 and 32 are accommodated and arranged such that their terminals are located on the same side. The front and rear batteries 31 and 32 are deviated from each other in the vehicle width direction by the positioning piece 33f. Therefore, the positive terminal 31a, the negative terminal 32b, the negative terminal 31b, and the positive terminal 3 of each battery.
Reference numerals 2a deviate from each other in the vehicle width direction so that they do not face each other (see FIG. 8).

The motor unit 11 is formed by integrating a driving motor 11a arranged in the vehicle width direction and an electric case 11b extending rearward from the left end (one end) of the motor 11 by bolting flange portions together. It has a substantially inverted L-shape when viewed from a plane. A connector port 11c is formed on the outer peripheral surface of the right end (the other end) of the drive motor 11a, and a terminal block 11d is formed inside the connector port 11c. This connector port 11c, terminal block 1
Reference numeral 1d denotes a connecting portion of the present invention. When viewed from the side, a perpendicular line a above a straight line c connecting the axis of the drive motor 11a and the axis of the rear wheel 12 and orthogonal to the straight line c. Is located on the connection line b inclined backward by θ. A signal line 35 for extracting a rotation speed signal from a rotation sensor (encoder) is connected to the connector port 11c via a connector 35a. A power line 34 is screwed to the terminal block 11d to secure a plurality of terminals 34a.
4b are connected by fixing them with bolts 34c. Thus, the power line 34 and the signal line 35 are taken out from the upper side of the motor unit 11 and obliquely upward and rearward.

Next, the operation and effect of this embodiment will be described. In the electric motorcycle 1 of the present embodiment, the rear wheel 12 swings up and down together with the motor unit 11 due to the unevenness of the road surface or the like.
c, The terminal block 11d swings around the pivot portion 11e. Therefore, the signal line 35 and the power line 34 are deformed so as to absorb the swing amount of the connector port 11c and the like at the portion between the vehicle body fixed portion and the connector port 11c and the terminal block 11d. In this case, in this embodiment, the connector port 11c and the terminal block 11d are formed obliquely upward and rearward.
Since the signal line 35 and the power line 34 were taken out diagonally,
The deformation operation at the time of absorbing the swing becomes smooth, and the power line 3
No unreasonable bending force or the like acts on 4 or the like, so that the durability of the power line 34 or the like can be improved accordingly and the life can be extended. Further, as described above, since the power line 34 and the like are connected diagonally, waterproofing of the connection portion is easier than in the case where the power line 34 is connected vertically.

Since the power line 34 and the signal line 35 are detachably connected to the connector port 11c and the terminal block 11d,
The drive motor can be shared by appropriately selecting the length of the power line or the like in each model. In this case, since the terminal block 11d and the like are located at the right end of the drive motor 11a, the drive motor 11a
Can easily perform a continuity test and the like, and maintainability can be improved.

Furthermore, in the present embodiment, the opening / closing lid 16b is disposed in the space below the seat 18 so as to be openable and closable rearward, and the charging terminal 23 is disposed in the opening / closing lid 16b. In addition, the sheet 18 functions as an umbrella for the charging terminal 23, and can prevent rain or the like from being applied. Also, since the charging terminal 23 is not exposed to the outside, the sheet 1
Even when the side cover 16 and the side cover 8 are separated from each other, the appearance can be prevented from being deteriorated.

In the above embodiment, the lead wire is taken out of the motor unit obliquely upward and rearward, but the lead wire of the present invention may be taken out diagonally forward and upward.

[0023]

As described above, according to the lead wire laying structure of the electric motorcycle according to the present invention, the lead wire is obliquely taken out rearward or forward from the upper side of the outer peripheral surface of the drive motor. The motor unit can be smoothly deformed in accordance with the swing, and the swing does not cause excessive bending or breakage of the lead wire, thereby preventing fatigue bending disconnection and extending the life of the lead wire. There is. In addition, since the lead wire is detachably connected to the connection portion provided at the other end of the outer peripheral surface of the drive motor, the drive motor can be shared by appropriately selecting the length of the lead wire. The continuity test and the like of the motor can be easily performed, and there is an effect that the maintainability can be improved.

[Brief description of the drawings]

FIG. 1 is a right side view of a lead wiring structure of an electric motorcycle according to an embodiment of the present invention.

FIG. 2 is a plan view of a lead wire connection portion of the embodiment.

FIG. 3 is an exploded view showing a lead wire connection portion of the embodiment.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 9;

FIG. 5 is a sectional view taken along line VV of FIG. 9;

FIG. 6 is an exploded perspective view of a rear battery box and the like of the embodiment.

FIG. 7 is a perspective view of the front battery box of the embodiment.

FIG. 8 is a wiring diagram of the battery of the embodiment.

FIG. 9 is a left side view of the electric motorcycle having the structure of the embodiment.

FIG. 10 is a plan view of the electric motorcycle according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric motorcycle 2 Body frame 11 Motor unit 11a Driving motor 11b Transmission case 34, 35 Power line, signal line (lead wire) a Vertical line b Straight line

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62J 39/00 B62K 11/00 B62M 7/06

Claims (1)

(57) [Claims] 1. A disposed in the vehicle width direction by the drive motor and the
Extends from one end of the motor in the vehicle width direction to the rear of the vehicle and
In vertically swingably pivoted to the electric motorcycle of the lead wire routing structure for a front end portion in the body frame of the motor unit to the transmission case formed by unitizing for supporting a rear wheel, the driving
Of the drive motor on the outer peripheral surface of the other end of the drive motor.
Above the straight line connecting the motor shaft and the rear wheel shaft,
To the part inclined backward or forward with respect to the perpendicular perpendicular to
An electric motorcycle, further comprising: a lead wire connecting portion, wherein the lead wire is detachably connected to the lead wire connecting portion , and the lead wire is inclined backward or forward with respect to the vertical line and taken out. Lead wiring structure.