JP3055706B2 - Battery mounting 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 battery mounting structure for an electric motorcycle, and more particularly, to a battery in which a battery is mounted below a step floor and the step floor is fixed to a stay member for fixing the battery. Related to the mounting structure.

[0002]

2. Description of the Related Art An electric motorcycle is disclosed in Japanese Patent Application Laid-Open No. 54-38043.
As described in Japanese Patent Application Laid-Open Publication No. H10-163, an electric motor is mounted as a power source, and a battery for supplying power to the electric motor is mounted, and the vehicle runs with the power of the electric motor. In such an electric motorcycle, a battery having a large weight is arranged on the lower side of the vehicle body, and the center of gravity is lowered.

However, in a motorcycle, since a power unit, a swing arm, a link mechanism for attaching a cushion unit, and the like are arranged below the vehicle body, the power unit and the battery interfere with each other, and a large battery is attached to the vehicle. It was difficult to attach to the lower side.

Accordingly, the present applicant has proposed an electric motorcycle in which a large battery can be attached to the lower side of the vehicle body in Japanese Patent Application No. 1-181496. In the electric motorcycle according to the prior application, a support plate is fixed to a vehicle body frame below a step floor, and a battery box containing a battery is attached by the support plate. In this electric motorcycle, the step floor is made of synthetic resin to reduce the overall weight.

[0005]

However, in the electric motorcycle according to the above-mentioned prior application, since the step floor is made of synthetic resin, the rigidity of the step floor is low, and a plurality of step floors are provided by using a stay or the like. There is a problem that the parts must be supported by the body frame or the like, the number of parts increases, and sufficient weight reduction cannot be achieved. The present invention has been made in view of the above problems, and an object of the present invention is to provide a battery mounting structure for an electric motorcycle that can also use a battery supporting part for supporting a step floor, and reduce the number of parts and achieve a lighter weight. I do.

[0006]

In order to achieve the above object, a battery mounting structure for an electric motorcycle according to the present invention has a step floor mounted on a body frame in front of a seat, and a battery mounted below the step floor. In an electric motorcycle that travels by supplying power from the battery to an electric motor, the step floor is disposed between left and right frames.
A support plate having a substantially U-shape in front view so as to swell downward.
And a battery is mounted on the support plate via an elastic body,
Fix both ends to the left and right frames
Between the frames, making surface contact on the battery
A gate-shaped stay member is used to press the bar so as to press it through the elastic body.
Fixing the Tteri, characterized by being secured to the step floor to the stay member.

[0007]

The battery mounting structure for an electric motorcycle according to the present invention comprises:
Since the step floor is fixed to the stay member for fixing the battery, a stay dedicated to supporting the step floor can be omitted, and the number of parts and the weight can be reduced. Since Matava Tsu <br/> Teri engages the stay member via the elastic member surface contact can buffer the force applied to the battery via a stay member from the step floor.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a battery mounting structure for an electric motorcycle according to an embodiment of the present invention. FIG. 1 is a side view of the electric motorcycle, FIG. 2 is a plan view of a main part, and FIG. 3 is 3-3 in FIG. 4 is a side view of the main part, and FIG. 5 is a perspective view of the main part.

In FIG. 1, reference numeral 11 denotes a substantially U-shaped body frame when viewed from the side, and a body 21 made of synthetic resin is mounted on the body frame 11. The body 21 includes a front outer cover 21f, a front inner cover 21e, a leg shield 21a, a rear cover 21c, an under cover 21d, and a step floor 21b described later in detail, and covers around the body frame 11.

The body frame 11 includes a front frame 1
1f, center frame 11d and rear frame 11r
Having. The front frame 11f is formed of a pipe-like member extending substantially vertically, and has a head tube 12
Is fixed, and the lower end is connected to the center frame 11d.

A front wheel 14f is supported on the head tube 12 via a front fork 13 so as to be steerable by a steering handle 15, and a control box 1 is provided at a front portion.
6 is attached. The front of the head tube 12 is covered by a front outer cover 21f, and the rear is covered by a front inner cover 21e. The control box 16 houses a controller such as an ECU, and the controller is connected to a drive circuit, a battery, and the like, which will be described later.

As shown in FIG. 2, the center frame 11d is provided with two cross pipes 37 extending in the vehicle width direction and separated from each other in a vehicle width direction on a substantially U-shaped pipe 35 in a plan view, which extends rearward. It is composed. This center frame 11d
The front frame 11f is connected to the front by welding or the like, and the rear frame 11r is integrally connected to both left and right ends of the rear. The center frame 11d has leg shields 21a on both front sides and under covers 21d on both left and right sides.
In addition, a step floor 21b is attached to the upper part as described later.

A power swing unit 50 is swingably supported at a rear portion of the center frame 11d, and support plates 36F, 3 extending in the vehicle width direction respectively at front and rear lower portions.
6R is installed between the pipes 35. The power swing unit 50 has a front portion swingably mounted on a pivot shaft (not shown) or the like, and rotatably supports a rear wheel 14r on a rear portion.

Although a detailed description is omitted, the power swing unit 50 includes an electric motor, a drive circuit for driving the electric motor, a continuously variable transmission, a final reduction mechanism, and the like assembled in a case. 14r is driven. A cushion unit 49 is interposed between the power unit 50 and the rear frame 11r (see FIG. 1).

As shown in FIG. 3 and FIG.
F and 36R are substantially U-shaped when viewed from the front, and the support plate 36F is fixed to the left and right pipes 35 at both left and right ends by welding or the like. Similarly, the support plate 36R is also fixed to the left and right pipes 35 at the left and right ends. On the support plates 36F and 36R, two battery boxes 22 containing batteries are mounted on the left and right via an elastic body 40. The upper portions of the battery boxes 22 are pressed by holders (stay members) 23 and are mounted on the center frame 11d. Fixed. The elastic body 40 is made of rubber or the like, and is in surface contact with both the battery box 22 and the support plates 36F and 36R on the left and right sides on the lower surface of each battery box 22.

2 to 4, the holder 23 is formed by pressing a steel plate or the like into a substantially gate shape by a press or the like when viewed from the front, and extends right and left between the cross pipes 37. The holder 23 is detachably fixed at both ends to mounting members 38 fixed to the left and right pipes 35 with bolts or the like, and the lower surface thereof is in contact with the upper surface of the battery box 22 via a plurality of elastic bodies 39.

Receiving members 41 are fixed to the upper and left sides of the holder 23, and the step floor 21b is fixed to these receiving members 41 as described later. Elastic body 3
9 is made of rubber or the like, like the above-described elastic body 40, and comes into surface contact with both the lower surface of the holder 23 and the upper surface of the battery box 22.

As shown in detail in FIG. 5, the step floor 21b is formed by molding a synthetic resin or the like, and a semi-cylindrical column portion 43 is erected integrally with a rear portion of the substantially flat floor portion 42. It is composed. This step floor 21b
On the rear surface of the floor portion 42, bosses 42a are provided on both left and right sides at a substantially central position in the front-rear direction, and a plurality of ribs 42b extending in the vehicle width direction are integrally provided. The boss 42a
Can be configured separately from the step floor 21b.

The step floor 21b has a floor portion 4
The front edge of column 2 is fastened to the front inner cover 21e at two places by tapping screws or bolts, and similarly, the upper edge of the column portion 43 is fastened to the rear cover 21c at three places,
Furthermore, the boss 42a is fixed to the receiving member 41 with a bolt 44 penetrating from above. As shown in FIG. 3, the lower end of the boss 42 a contacts the upper surface of the receiving member 41, and the bolt 44 is screwed into a nut 45 fixed to the receiving member 41. Reference numeral 95 denotes a side skirt hanging from both side edges of the step floor 21b, and covers both sides of the holder 23.

Although not explicitly shown in the drawing, the rear frame 11r is configured by arranging pipes extending obliquely upward and rearward apart from each other, and has a front portion coupled to the center frame 11d. A rear cover 21c made of a synthetic resin is attached to the rear frame 11r, and a seat 26 is mounted on the rear cover 21c. The upper part of the rear cover 21c is open, and the seat 26 is hinged at the front lower part.
c is supported so as to be able to open and close the upper opening.

In the rear cover 21c, a trunk box 25 and a charging box 27 are accommodated in front and rear of the rear wheel 14r at an obliquely front upper side. The trunk box 25 has an upper opening, and the upper opening is openably and closably covered with the seat 26 described above. This trunk box 25 is large enough to accommodate a helmet.

The charging box 27 has a substantially L-shape in a side view with a front portion protruding upward, and an upper front portion is opened. The charging box 27 houses a charger for charging from a commercial AC power supply and the like, and a front upper opening is covered with a lid 28 so as to be openable and closable. The lid 28 is provided with a charging circuit on one side,
The charging circuit and the charger are connected to a battery or the like.

In FIG. 1, reference numeral 88 denotes an intake duct arranged in the rear cover 21c. One end of the intake duct 88 is connected to the cooling air inlet of the power swing unit 50, and the other end is opened in the rear cover 21c. I do.

In such an electric motorcycle, since it is arranged below the step floor 21b which is a dead space, the battery box 22 does not interfere with other devices, and a large battery box can be arranged. A battery of capacity can be mounted. And the battery box 22
Are fixed to the vehicle body frame 11 by supporting plates 36F, 36R.
Holder 23 mounted on and fixed to body frame 11
However, since the step floor 21b is fixed to the holder 23, a special stay or the like is not required for maintaining the rigidity of the step floor 21b, and the number of parts can be reduced and the weight can be reduced.

In this electric motorcycle, the step floor 21b has two tapping screws for fixing the front part of the floor part 42, and the upper part of the column part 43 for fixing.
2 to be fixed to the tapping screw of the book and the holder 23
It can be removed from the body frame 11 only by removing the bolts. For this reason, floor step 21b can be easily removed at the time of battery maintenance, etc.
Battery maintenance work is easy.

[0026]

As described above, according to the battery mounting structure for an electric motorcycle according to the present invention, the body frame
Attach a step floor in front of the seat to
Battery below the floor, and
In an electric motorcycle that travels by supplying power to an electric motor,
Inflate downward between the left and right frames where the
A support plate having a substantially U-shape in front view is erected to
The battery is mounted on the board via an elastic body, and both ends are
Hang between the left and right frames to secure it to the right frame.
Over the battery and press it through the elastic body that makes surface contact with the battery.
The battery is fixed with a gate-shaped stay member
The step floor was fixed to the member. First, since the battery is disposed below the step floor, which is a dead space, the size of the battery can be increased and the center of gravity can be reduced . Its to, the stay member for fixing the battery and the gate-shaped
Then, the stay member is fixed to both left and right ends between the left and right frames.
By setting it, the elastic body
Press the battery from above with the stay member,
Secure the battery to secure the step floor to the member
The stay member for use as a support member for the step floor
Can, therefore, Runode can save a dedicated component to the mounting of the step floor, the effect is obtained that reduction and weight reduction of the number of parts can be achieved.

Also, a support plate for mounting the battery and a battery
An elastic member is interposed between the re bottom, and because interposed an elastic body to surface contact between the stay member and the battery, force acting on the battery via a stay member from the step floor in addition to the above effects Is also obtained.

[Brief description of the drawings]

FIG. 1 shows a battery mounting structure for an electric motorcycle according to an embodiment of the present invention, and is an overall side view of the electric motorcycle.

FIG. 2 is a plan view of the main part.

FIG. 3 is a front sectional view of the essential part.

FIG. 4 is a side view of the main part.

FIG. 5 is a perspective view of the main part.

[Explanation of symbols]

11: body frame, 11d: center frame, 21
b: step floor, 22: battery box (battery), 23: stay member, 26: seat (seat),
23 ... support plate, 39 ... elastic body, 40 ... elastic body .

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62J 11/00 B62J 25/00 B62K 19/40 B62M 7/06

Claims (1)

(57) [Claims] 1. A mounting a step floor in front of the seat to the vehicle body frame, a battery-below the step floor, the two-wheeled electric vehicle which travels by power from the battery to the electric motor, right and left to place the step floor Between the frames
A support plate that is substantially U-shaped in front view is erected so as to swell toward
A battery is mounted on the support plate via an elastic body, and the left and right ends are fixed to the left and right frames.
Between the frames, making surface contact on the battery
A gate-shaped stay member is used to press the bar so as to press it through the elastic body.
Fixing the Tteri, said the step floor to the stay member is fastened, the battery mounting structure of the electric motorcycle characterized by and this.