JP2963219B2 - Motorcycle carrier mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier mounting structure for a motorcycle, and more particularly to an anti-vibration measure when a tandem grip for a rear passenger is provided.

[0002]

2. Description of the Related Art In motorcycles, a carrier for loading luggage is often mounted on the rear end of a vehicle body frame. When such a carrier is mounted on a two-seat motorcycle, it is conceivable to form a tandem grip portion on the carrier for a rear occupant to grip.

[0003]

However, when a tandem grip portion is formed on the carrier, running vibrations and the like are easily transmitted from the body frame to the grip portion via the carrier, so that the bodily sensation vibration of the rear seat occupant tends to increase. There is concern about the problem. The present invention has been made in view of the above-described conventional situation, and has as its object to provide a carrier mounting structure for a motorcycle that can reduce the bodily sensation vibration of a rear occupant when a tandem grip portion is formed in the carrier.

[0004]

According to the present invention, there is provided a structure for mounting a carrier behind a seat of a body frame of a two-seat motorcycle, wherein the carrier 54 is mounted substantially flush with the upper surface of the seat 10. It is of a three-segment structure composed of a mounting portion 56 and left and right side portions 55, 55,
The side portion 55 connects an upper side portion 55e, which is bolted and fixed to the side surface of the mounting portion 56, to a rear end of a lower side portion 55b extending forward from the upper side portion 55e at a position below the upper side portion 55e with a rib 55f. And the front end of the upper side 55e and the lower side 5
The tandem grip portion 55 connects the middle of the tandem grip portion 55b to the vehicle body frame via a rubber damper at two places before and after the tandem grip portion 55 connection portion of the lower side portion 55b is sandwiched. The tandem grip 5 of the lower side 55b of the one side 55 is fixed.
A cover 55c is integrally formed so as to extend downward in the vicinity of the connecting portion 5, and a small case 63 is disposed inside the cover 55c in the vehicle width direction, and the small case 63 is fixed to the vehicle body frame by bolting. And at least a part thereof is covered from the outside by the cover portion 55c.

[0005]

According to the carrier mounting structure of the present invention, since the carrier is fixed to the body frame 2g via the elastic member 57, the traveling vibration is transmitted by the elastic member 57 when the vibration is transmitted from the body frame 2g to the carrier. It is suppressed, and the bodily vibration of the rear occupant is reduced accordingly. Further, the side part 55 of the carrier 54 is connected to the upper side part 55e and the lower side part 5e.
5b, the rib 55f and the tandem grip portion 55 are formed in a substantially rectangular shape, so that the rigidity of the side portion 55 can be increased. As a result, the load supporting rigidity of the entire carrier 54 can be greatly increased. Also, one side portion 55
The cover portion 55c is formed integrally with the lower side portion 55b near the tandem grip 55 connecting portion so as to expand downward, so that the cover portion 55c functions as a reinforcing member, and the rigidity of the side portion 55 also increases from this point. As a carrier, the load supporting rigidity is further increased. The cover 55c
The accessory case 63 is arranged inside the vehicle in the vehicle width direction.
Since at least a part of 3 is covered from the outside by the cover portion 55c, the appearance near the accessory case 63 can be improved, and the accessory case 63 can be prevented from being damaged when it falls down.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to 5 are views for explaining a carrier mounting structure for a motorcycle according to one embodiment of the present invention. FIGS. 1 and 4 are perspective views and side views, respectively, and FIG.
FIG. 3 is a perspective view of a rubber damper, and FIG. 5 is a side view of a motorcycle having the structure of the embodiment. The following description is made in a state where the vehicle is straddling the vehicle, that is, in a state where the vehicle is viewed from the rear to the front.

In FIG. 1, reference numeral 1 denotes a motorcycle having the structure of the embodiment, and a body frame 2 of the motorcycle is of a so-called diamond type, in which a front end of one main frame 2b is connected to a head pipe 2a. A pair of left and right seat stays 2c and a seat rail 2f are connected to the rear end of the main frame 2b, both members are connected by a back stay 2g, and one down tube 2e is connected to the head pipe 2a. It has a structured structure.

A front fork 4 for pivotally supporting the front wheel 3 at its lower end is supported by the head pipe 2a so as to be steerable left and right. A steering handle 5 is fixed to the upper end of the front fork 4. . A rear arm 7 that integrally supports the lower end of each seat stay 2c integrally supports a rear arm 7 that pivotally supports the rear wheel 6 at the rear end.

An engine unit 8 is suspended and supported in a space surrounded by the main frame 2b, the seat stay 2c, and the down tube 2e. A fuel tank 9 is provided above the main frame 2b, and a seat rail 2f is provided above the main frame 2b. The seat 10 is mounted on the upper side.

[0010] A portion on the front side of the head pipe 2a is surrounded by a cowling 18, and a screen 19 made of a transparent plate is mounted above the cowling 19 to suppress wind running toward the occupant's face. I have. A front cover 20 is provided below a front portion of the fuel tank 9. The cover 20 moves the radiator 25 disposed on the front side of the down tube 2 e, that is, behind the front fork 4 to the left and right sides. Covering from.
Furthermore, the lower left and right portions of the seat 10 are covered with side covers 21.

The engine unit 8 is of a water-cooled four-cycle single-cylinder type and has a structure in which a cylinder block 12, a cylinder head 13, and a head cover 14 are laminated and fastened to a front portion of an upper wall of a crankcase 11. A cooling water pump 2 is provided at the front of the right side wall of the crankcase 11.
The suction port of the pump 29 is connected to the radiator 25 via a return hose, and the discharge port is connected to the cylinder body 12 via a supply hose. In addition, 8a is an under guard for protecting the lower surface of the crankcase 11.

A carburetor 15 is connected to an intake port formed on the rear wall of the cylinder head 13, and an air cleaner 16 is connected to the suction port. The air cleaner 16 is disposed in a triangular space surrounded by the seat stays 2c, the seat rails 2f, and the back stays 2g, and a battery 17 is accommodated and disposed below the air cleaner 16.

The left and right exhaust pipes 32a and 32b of the exhaust device 31 are connected to the left and right exhaust ports formed on the front wall of the cylinder head 13, respectively. The two exhaust pipes 32a, 32b are connected to one confluence pipe 32c on the right side of the cylinder body 12, and a first expansion chamber 33 and a second expansion chamber 34 are sequentially provided at the rear end of the confluence pipe 32c. It is connected. 36 is a speed cable, 37 is a brake hose, and 49 is a clutch cable.

A carrier 54 is mounted behind the seat 10. The carrier 54 has a three-part structure including a mounting portion 56 substantially flush with the upper surface of the sheet 10 and left and right side portions 55. The side portion 55 connects an upper side portion 55e fastened and fixed to a side surface of the mounting portion 56 with a bolt 55d and a rear end portion of a lower side portion 55b extending forward at a position below the upper side portion 55e with a rib 55f. Further, the front end of the upper side 55e and the middle of the lower side 55b are connected by a tandem grip 55a. The tandem grip portion 55a is curved outward so that a rear occupant can hold the tandem grip portion with his / her hand. A lamp bracket 55g is formed integrally with a rear end of the lower side 55b, and a hanger bracket 55h is formed integrally with a front side thereof. Further, a cover 55c is formed integrally with the front end of the lower side 55b of the left side 55. A flasher lamp 60 is mounted on the lamp bracket 55g, and a helmet hanger 61 is mounted on the hanger bracket 55h. This accessory case 6
3 is a bracket 6 welded to the back stay 2g.
4a and 64b are fixed with bolts 63a and 63b, and are covered with the cover 55c.

The lower side 55b of each of the side portions 55 is fixed to brackets 64a and 64c of the back stay 2g via two rubber dampers 57. The rubber damper 57 is formed by fitting a rubber cylinder with a collar to a collar 57b made of a metal pipe and further baking it. The lower side 55b is fixed by bringing a washer 59 having a rubber plate into contact with the rubber damper 57, inserting a bolt 58, and screwing the bolt 58 into a nut 58a fixed to a bracket 64a.

Next, the operation and effect of this embodiment will be described. According to the present embodiment, since the tandem grip portion 55a is formed integrally with the side portion 55 of the carrier 54, the rear seat occupant can stabilize the body by gripping the grip 55a. There is no problem of increasing the number of parts and the number of assembling steps as in the case of separate parts. The tandem grip 5
5a can also be used as a standing handle.

When the tandem grip is formed as described above, when the carrier is directly fixed to the body frame as in the prior art, the traveling vibration and the like are directly transmitted to the hands of the rear occupant, and the bodily sensation increases. Problems are a concern.
In this embodiment, since the carrier 54 is fixed to the vehicle body frame 2 via the rubber damper 57, most of the traveling vibration and the like are absorbed by the rubber damper 57, and the body vibration can be reduced accordingly. Also, the side portion 55 of the carrier 54
Is substantially rectangular in side view in which the upper side 55e and the lower side 55b are connected by a rib 55f and a tandem grip 55, and the front and rear portions of the lower side 55b sandwiching the tandem grip 55 connection are fixed to the vehicle body frame. As a result, the load supporting rigidity as a carrier can be greatly increased, and the cover 55c is integrally formed so as to extend downward near the tandem grip 55 connecting portion of the lower side 55b of the one side 55. From this point, the rigidity of the side portion 55 is increased, and the rigidity for supporting the load as a carrier is further increased. Also, an accessory case 6 is provided inside the cover 55c in the vehicle width direction.
3 and the accessory case 63 is bolted and fixed to the vehicle body frame, and at least a part thereof is covered with the cover 55.
c, the appearance around the accessory case 63 can be improved, and damage to the accessory case 63 at the time of falling down can be avoided by the cover portion 55c.

Further, in this embodiment, since the flasher lamp 60 and the helmet hanger 61 are mounted on the carrier 54, the vibration isolation of these parts can be performed only by mounting the carrier 54 via the rubber damper 57. The number of parts, the number of assembling steps, and the like can be reduced as compared with the case where anti-vibration measures are separately performed. In the above embodiment,
Although the case where the carrier 54 has a three-part structure has been described, it is needless to say that this may be integrally formed.

[0019]

As described above, according to the motorcycle carrier mounting structure of the present invention, the tandem grip portion is formed on the carrier, and the carrier is mounted on the body frame via the elastic member. And the like can be suppressed by the above-mentioned elastic member, the effect of reducing the bodily sensation vibration of the rear passenger can be increased, and the rigidity of the side portion can be increased. As a result, the luggage support rigidity of the entire carrier can be increased. This has the effect of improving the appearance of the vicinity and preventing the accessory case from being damaged when it falls down.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a carrier mounting structure for a motorcycle according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of a rubber damper having the structure of the embodiment.

FIG. 4 is a side view of the structure of the embodiment.

FIG. 5 is a left side view of the motorcycle having the structure of the embodiment.

[Explanation of symbols]

 Reference Signs List 1 motorcycle 2g seat stay (body frame) 10 seat 54 carrier 55, 55 left and right side portions 55 tandem grip portion 55b lower side portion 55c cover portion 55e upper side portion 55f rib 56 mounting portion 57 rubber damper (elastic member) 63 Get in

Claims (1)

(57) [Claims] 1. A structure for mounting a carrier behind a seat on a body frame of a two-seat motorcycle, wherein the carrier is substantially flush with an upper surface of the seat.
Part and left and right side parts.
The side part is bolted to the side of the mounting part.
In front of the specified upper side and below the upper side
To the rear end of the lower side that extends
Connect the front end of the part and the middle of the lower side with a tandem grip
It has a substantially rectangular shape in side view and a tandem on the lower side.
Rubber dampers before and after the grip part
And is fixed to the body frame via
Near the tandem grip connection on the lower side of the guide
The cover part is integrally formed so as to spread downward,
An accessory case is arranged inside the cover in the vehicle width direction, and the accessory
The bolts are fixed to the body frame with bolts and less
And part of it is covered from outside by the cover
Carrier mounting structure for a motorcycle, characterized in that that.