JP3380449B2 - Auxiliary device arrangement structure for motorcycle - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of auxiliary devices such as a battery and an air cleaner in a motorcycle.

[0002]

2. Description of the Related Art A battery is a bulky auxiliary device which is usually in the form of a rectangular parallelepiped, and is a problem to arrange especially in a motorcycle. Conventionally, there is an example of a motorcycle in which a battery is provided in the front cover while avoiding interference with other devices.

An example of such an example is Japanese Unexamined Patent Publication No. Hei 1-103590.
What is described in the publication is shown in FIG. The motorcycle 01
The main frame 03 extends downward from the head pipe 02, and the battery holder 05 is attached to the bracket 04 protruding forward from the lower portion of the head pipe 02,
A battery 06 is housed in the battery holder 05.
Front cover from the front to the left and right of the battery 06
07 is covering.

[0004]

As described above, the battery 06 is used.
Is held in the bracket 04 projecting forward of the head pipe 02 via the battery holder 05, so that the battery 06 is located in front of the head pipe 02, and as a result, the battery 06 is
The front cover 07 that covers the front of the vehicle is greatly extended forward, which is unfavorable in appearance because of its large size.

The present invention has been made in view of the above points,
The purpose of this is to provide an auxiliary device arranging structure for a motorcycle, which can cover the battery without overhanging the front cover to the front and can improve the size and appearance.

[0006]

In order to achieve the above object, the present invention is directed toward the rear from the head pipe.
The horizontal frame below the main frame that extends downwards.
Suspend the internal combustion engine with the Linda tilted forward and place it above the cylinder.
For motorcycles with a carburetor and air cleaner on one side
The air cleaner case of the air cleaner
Is composed of a front case and a rear case that are divided into front and rear,
Intake duct extending from the front of the air cleaner case
However, it is necessary to stand upright from the upper part of the rear case.
The self that opened the intake port to the rear through the standing wall from the front side.
The auxiliary equipment arrangement structure of the motorcycle is adopted .

[0007]

[0008]

[0009]

[0010]

Since the intake port of the intake duct opens rearward of the standing wall, dust from the front can be blocked by the standing wall and can be prevented as much as possible from entering the intake port.

[0012]

The air cleaner case is divided into front and rear parts, the intake duct extends from the front case, and the standing wall is formed along the mating surface of the rear case, so that each case can be easily manufactured and assembled. Work becomes easy.

[0014]

An air cleaner, which utilizes a space below the main frame that extends obliquely downward and rearward from the head pipe,
The carburetor and the internal combustion engine are arranged in this order so that the intake systems are arranged one above the other, resulting in good space efficiency and excellent functionality.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. An overall side view of the motorcycle 1 according to the present embodiment is shown in FIG. 1, and an overall side view and a plan view of the body frame 2 are shown in FIGS.
Shown in.

The body frame 2 includes head pipes 3 to 1
A round pipe-shaped main frame 4 extends obliquely downward and rearward, and a pair of left and right symmetrical rear frames 5 and 5 branched leftward and rightward from an intermediate portion thereof extend backward substantially horizontally and then obliquely upward. Standing up.

Therefore, as shown in FIG. 2, the body frame 2 has a main frame front portion 4a which is obliquely inclined in a side view.
And a rear frame inclined portion 5b that rises diagonally through a substantially horizontal rear frame horizontal portion 5a and has a shape in which the center is curved downward, and the rigidity of the entire body frame is high. A rear portion 4b of the main frame 4 projects further below the rear frame horizontal portion 5a.

A gusset 6 reinforces the space between the head pipe 3 and the main frame 4, and a pair of left and right rear frames 5 and 5 are provided.
A cross plate 7 having a triangular shape in a plan view is erected between the parts branched from the main frame 4 at the front end of the cross frame 8 and the rear part of the rear frame tilt part 5b at the boundary between the rear frame horizontal part 5a and the tilt part 5b. A cross pipe 9 is erected, and a rear sub-frame 10 bent in a U-shape in a plan view is connected rearward in a horizontal posture between the rear ends of the left and right rear frame inclined portions 5b. A gusset 11 reinforces a connecting corner portion between the rear frame inclined portion 5b and the rear subframe 10.

A pair of bilaterally symmetrical pivot plates 12 and 12 are welded at the upper edge of the main frame rear portion 4b and vertically hang downward while spreading somewhat to the left and right, and the upper edges of the pivot plates 12 and 12 are located at the main portion thereof. The rear part is welded along the frame rear part 4b, the rear part is bent, and the connecting parts 13 and 13 are extended obliquely upward.
The upper ends of 13, 13 are welded to the cross pipe 8 to connect and reinforce the rear end of the main pipe 4 and the cross pipe 8 installed on the left and right rear frames 5, 5.

Therefore, as shown in FIG. 2, the rear frame horizontal portion 5a, the main frame 4b, and the connecting portion 13 form three triangular sides in a side view, and the rigidity of the entire body frame 2 is improved.

In the vehicle body frame 2 as described above, engine mount brackets 16 and 16 are vertically provided at the front portions of the rear frame horizontal portions 5a and 5a, respectively.
Gusets 17 and 17 are fixed to the corners of a and the inclined portions 5b and 5b, and support brackets 18 and 18 are provided on the left and right of the cross pipe 8.
Is provided projectingly, and horizontally long supporting brackets 19 and 19 are attached to the connecting portion with the rear subframe 10 at the upper ends of the rear frame inclined portions 5b and 5b.
A support bracket 20 is provided at the center of the rear part of the left and right sides, and a pair of support brackets 21 and 21 are provided on the left and right sides of the support bracket 20, respectively.

The head pipe 3 is provided with support brackets 22 and 23 for supporting the battery on the upper and lower sides of its right side, and support brackets 24 and 24 for supporting the air cleaner 45 on the left and right of the gusset 6. With leg shield 72
Supporting brackets 14 and 14 for supporting are provided to project laterally, and further supporting brackets 15 and 15 for supporting the rear part of the leg shield 72 are provided behind the engine mount brackets 16 and 16 of the rear frame horizontal parts 5a and 5a. It is provided.

A front wheel 26 is rotatably supported by the lower end of a front fork 25 rotatably supported by the front head pipe 3 of the vehicle body frame 2, and a handle 27 is developed left and right on the upper part integral with the front fork 25. It is installed.

A pair of left and right pivot plates 12 and 12 vertically installed from the main frame rear portion 4b is provided with a bearing 12a around the lower rear end of the main frame rear portion 4b, and a pivot shaft penetrating the bearing 12a. Rear forks 29, 29, whose front ends are pivotally supported at the left and right ends of 28, extend rearward, and a rear wheel 30 pivotally supported at the rear ends of the rear forks 29, 29 is made swingable up and down. A rear cushion 31 is interposed between the end and a gusset 11 provided on the upper end of the rear frame inclined portion 5b above the end.

A helmet storage box 35 is provided between the pair of left and right rear frames 5. This helmet storage box 35 has a substantially rectangular opening at the top, and an eaves portion 35a extends rearward from the upper portion of the rear wall, the front portion of the bottom wall is supported by the cross plate 7, and the rear portion of the bottom wall is crossed. Pipe 8
Is supported by the support bracket 18, and the left and right side portions of the eaves portion 35a are supported by the support bracket 19, both of which are elastically supported via elastic members.

A full-face type helmet 34 is stored in the helmet storage box 35. A fuel tank 36 is provided behind the helmet storage box 35. The fuel tank 36 is a box body which is divided into upper and lower halves and is joined by a flange portion 36a forming a mating surface.
A substantially rectangular parallelepiped fuel tank 36 is inserted into the rear subframe 10 which is connected to the rear end thereof and which is bent in a U shape in a plan view, and is supported by the flange portion 36a.

The eaves portion 35a extending to the rear of the helmet storage box 35 covers the front portion of the fuel tank 36 from the upper side to the left and right side portions. A long tandem seat 37 is provided at the front and back so as to cover the helmet storage box 35 and the fuel tank 36, and the helmet storage box 35 is provided so as to be openable and closable with its front end pivotally supported.

A seat lock device is provided on the pair of left and right support brackets 21, 21 projecting from the rear portion of the rear sub-frame 10.
38 is provided upright so as to lock and lock the lock pin 37a which is vertically provided from the rear end of the bottom plate of the tandem seat 37.

On the other hand, below the rear portion 4b of the main frame 4 extending from the head pipe 3, a rear frame horizontal portion 5 is provided.
2 of the engine mount bracket 16 hung on a and the pivot plate 12 hung on the rear part 4b of the main frame.
The internal combustion engine 40 is suspended by the support shafts 32 and 33 at some locations.
The internal combustion engine 40 is a four-cycle one-cylinder crankcase 40.
A cylinder 40b is projected forward from a by tilting forward substantially horizontally.

The carburetor 41 is arranged above the cylinder head 40c of the internal combustion engine 40, and the intake pipe 42 extending from the upper part of the cylinder head 34c is connected to the carburetor 41. An air cleaner 45 is provided from the lower side to the left and right sides of 4 and is connected to the carburetor 41 by a connecting pipe 43.

The internal space of the internal combustion engine 40 is utilized by utilizing the space below the main frame 4 which extends obliquely downward and rearward from the head pipe 3.
On the cylinder head 40c of the cylinder 40b tilted forward, the carburetor 41 and the air cleaner 45 are arranged in this order so that the intake system is upwardly arranged, and the space efficiency is improved and the function is excellent.

An exhaust pipe 55 extends from the lower portion of the cylinder head 34c, and the exhaust pipe 55 is bent and extends rearward in a substantially horizontal direction to the right, and a muffler 56 disposed on the right side of the rear wheel 30.
Connected to.

As shown in FIG. 6, the air cleaner 45 is composed of a front case 46 and a rear case 47, which are divided into front and rear parts, to form a horizontally elongated air cleaner case, and an air cleaner element 48 stretched at the boundary between the two. By intake chamber
45a and exhaust chamber 45b are partitioned. One end of an intake duct 49 is fitted in the center of the upper wall of the front case 46, and a connecting pipe 43 connected to the carburetor 41 is fitted in the lower wall of the rear case 47.

Left and right upper parts except the center extend upward along the horizontally long rectangular mating surfaces on the left and right sides of the rear case 47 and the standing wall 47 is formed.
a and 47a are formed perpendicularly to the front-rear direction of the vehicle body, and support walls 47 that are opposed to the rear from the inner edge of the compatible walls 47a and 47a to the left and right.
b and 47b are formed.

As described above, the air cleaner case has a structure in which the air cleaner element 48 is interposed at the boundary between the front and rear, and by forming the standing wall 47a along the mating surface of the rear case 47, the respective cases 46, 47 are formed. Can be done easily and the assembly work can be done easily.

The intake duct 49 extending from the center of the upper wall of the front case 46 is bent to the left and then to the rear so as to be supported through the left standing wall 47a.
The intake port 49a is directed rearward on the rear side.

The air cleaner 45 is installed in the main frame 4
Attach to the front of the from below. That is, the recesses between the left and right support walls 47b, 47b of the air cleaner 45 are fitted into the front portion of the main frame 4 from below, and the brackets 2 projecting to the left and right of the gusset 6 provided in the front portion of the main frame 4 are provided.
The support walls 47b, 47b are sandwiched between the left and right sides of the support walls 47b, 47b, and the support walls 47b, 47b are fixed to the brackets 24, 24 with bolts 50 and nuts 51, respectively, and the air cleaner 45 is suspended.

Therefore, the standing wall 47b is standing in front of the intake port 49a of the intake duct 49, and the standing wall 47b blocks the dust that jumps in from the front during traveling to prevent the dust from entering the intake port 49a as much as possible. can do.

A battery 60 is arranged on the right side of the head pipe 3 positioned diagonally above and in front of the air cleaner 45. A rectangular support frame 61 is provided on the upper and lower support brackets 22 and 23 projectingly provided on the right side surface of the head pipe 3 and is fixed to the support brackets 22 and 23 by a bolt 62 and a nut 63 in a slightly inclined posture. Battery case that is a rectangular box
64 is fitted and supported from above, and fixed by being tightened from above by the battery band 65.

The battery 60 is accommodated in the battery case 64. With reference to FIG. 5, a drain pipe 64a extends downward from the bottom wall of the battery case 64, and a drain tube 66 is connected to the drain pipe 64a.

The drain tube 66 extends downward from the drain pipe 64a while approaching the center of the vehicle body, and enters behind the intake duct 49 of the air cleaner 45 from the right side to connect the upper wall of the rear case 47 of the air cleaner 45 to the main frame 4. It extends rearward along the lower surface of the main frame 4 through the gaps, and extends vertically around the upper side of the internal combustion engine 40 as shown in FIG.

Therefore, if the battery 60 leaks,
The leaked liquid enters the drain tube 66 from the bottom of the battery case 64 via the drain pipe 64a, is guided to the rear of the internal combustion engine 40 by the drain tube 66, and is discharged downward.

Since the intake duct 49 of the air cleaner 45 is located on the left side of the head pipe 3, the battery 60 is located on the right side of the head pipe 3, so this battery 60
It is possible to easily make the drain tube 66 extending from the main tube 4 naturally along the lower surface of the main frame 4 in a short distance without interfering with the intake duct 49.

Also, the power line from the battery 60 and the handle 27
Signal lines from the head pipe 3 as shown in FIG.
On the side of the head pipe 3 is assembled into one harness 68
To the right side of the main frame 4 by passing around between the main frame 4 and the right side support wall 47b along the upper wall of the air cleaner 45 by detouring the front side to the right side to the rear side of the battery 60 (see FIG. 5). Along the back.

Of the cover for covering the vehicle body, the front cover 70 covers from the front of the head pipe 3 to the left and right sides, and the leg shield 72 covers the rear of the head pipe 3 and the upper part of the main frame 4 and the fronts of both legs of the driver.

As shown in FIG. 7, the front cover 70 covering the front of the head pipe 3 has a symmetrical shape with the center bulging forward, and a recess 70a into which the front fender 80 is swingably fitted is formed at the center of the lower end. Three mounting pieces 71 are formed above and below the left and right side edges of the inner surface.

On the other hand, the leg shield 72 is a front cover.
Corresponding to 70, it comprises a head pipe cover portion 72a surrounding the head pipe 3 from the rear, a main frame cover portion 72b covering the main frame 4 from above to the left and right sides, and a leg shield portion 72c protruding to the left and right sides.

Mounting holes 73 are formed in the head pipe cover portion 72a so as to correspond to the mounting pieces 71 of the front cover 70, and are mounted at portions corresponding to the left and right support brackets 14, 14 of the gusset 6 of the vehicle body frame 2. A hole 74 is formed.

Mounting holes 75, 75 are formed in the rear portions of the left and right side walls of the main frame cover portion 72b so as to correspond to the left and right support brackets 15, 15 of the rear frame 5, and an opening for maintenance is provided at a portion corresponding to the carburetor 41. 76, 76 are formed on the left and right. The openings 76, 76 are closed by the lids 77, 77.

Such front cover 70 and leg shield
Although the front and rear of the head pipe 3 are covered with 72, since the battery 60 provided in the front cover 70 is arranged on the right side of the head pipe 3 rather than on the front side, it is necessary to extend the front cover 70 largely forward. In addition, it is possible to reduce the size and improve the appearance.

The leg shield 72 covers the back of the air cleaner 45 not only from the rear but also from the upper side to the side, and partitions the upper side of the rear case 47 by standing walls 47a and 47a to form internal spaces on the left and right of the main frame 4, respectively. Intake duct 49
The intake port 49a of is open in the same space. Therefore, the structure is such that dust is unlikely to enter the intake duct 49.

[Brief description of drawings]

FIG. 1 is an overall side view of a motorcycle according to an embodiment of the present invention.

FIG. 2 is an overall side view of a body frame.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view of a main part of a front portion of a vehicle body.

FIG. 5 is a front view of the same.

FIG. 6 is a sectional view of an air cleaner.

FIG. 7 is an exploded perspective view of a front cover and a leg shield.

FIG. 8 is a side view of a conventional motorcycle.

[Explanation of symbols]

1 ... Motorcycle, 2 ... Body frame, 3 ... Head pipe, 4 ... Main frame, 5 ... Rear frame, 6 ... Gusset, 7 ... Cross plate, 8, 9 ... Cross pipe, 10
… Rear subframe, 11… Gusset, 12… Pivot plate, 13… Connection part, 14, 15… Support bracket, 16… Engine mount bracket, 17… Gusset, 18, 19, 20,
21, 22, 23, 24 ... Support bracket, 25 ... Front fork, 26 ... Front wheel, 27 ... Handle, 28 ... Pivot shaft, 29 ... Rear fork, 30 ... Rear wheel, 31 ... Rear cushion, 32, 33 ...
Spindle, 34 ... Helmet, 35 ... Helmet storage box,
36 ... Fuel tank, 37 ... Tandem seat, 38 ... Seat lock device, 40 ... Internal combustion engine, 41 ... Vaporizer, 42 ... Intake pipe, 43 ...
Connection pipe, 45 ... Air cleaner, 46 ... Front case, 47 ... Rear case, 48 ... Air cleaner element, 49 ... Intake duct, 50 ... Bolt, 51 ... Nut, 55 ... Exhaust pipe, 56 ... Muffler, 60 ... Battery, 61 … Supporting frame, 62… Bolts, 63… Nuts, 64… Battery case, 65… Battery band, 66…
Drain tube, 68 ... Harness, 70 ... Front cover,
71 ... Mounting piece, 72 ... Leg shield, 73, 74, 75 ... Mounting hole, 76 ... Opening, 77 ... Lid, 80 ... Front fender.

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B62J 11/00 B62J 39/00

Claims (2)

(57) [Claims] 1. A head pipe extending rearward and obliquely downward
Tilt the cylinder forward substantially horizontally below the projecting main frame.
The internal combustion engine is suspended and the carburetor is placed above the cylinder.
For motorcycles equipped with an air cleaner and an air cleaner, divide the air cleaner case in the air cleaner into
Air intake duct that is constructed by combining the front case and the rear case and extends from the front part of the air cleaner case.
However, it is necessary to stand upright from the upper part of the rear case.
The vertical intake wall is penetrated from the front side and the intake port is opened rearward.
An auxiliary device arrangement structure for a motorcycle characterized by: 2. The standing wall sandwiches the main frame.
The air intake duct penetrates one of the standing walls, and the power line is included between the other standing wall and the main frame.
2. The automatic machine according to claim 1, wherein
Auxiliary device arrangement structure for wheeled vehicles.