JP3010874B2 - Auxiliary equipment support structure for motorcycles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle supporting structure for supporting accessories disposed near an exhaust muffler.

[0002]

2. Description of the Related Art It is necessary to arrange many accessories in a narrow space on a motorcycle body. Especially in scooters, a large-capacity article storage room that can accommodate a helmet etc. is provided below the seating seat, so that auxiliary equipment such as air cleaner is pushed out of the vehicle body and arranged in the vicinity of the exhaust muffler Often become. In this case, a stay for supporting the accessories is welded to the exhaust muffler, and the accessories are screwed to this stay.

[0003]

In recent years, exhaust mufflers for motorcycles have a built-in catalyst in order to comply with exhaust gas regulations, and the exhaust muffler is extremely low due to the heat of reaction between the catalyst and the exhaust gas. The temperature rises and radiant heat also increases. For this reason, when the stay is welded to the exhaust muffler to support the auxiliary equipment as described above, it is necessary to take heat-resistant measures for the attachment part on the auxiliary equipment side and the auxiliary equipment main body. Since the stay is welded, the welded portion of the exhaust muffler increases, and these points increase the manufacturing costs of the accessories and the exhaust muffler.

In order to avoid the above problem, even if the auxiliary equipment is supported by members other than the exhaust muffler, for example, a body frame, the auxiliary equipment support member such as a dedicated stay or bracket must be provided. Inevitably, an increase in the manufacturing cost of motorcycles was inevitable.

The present invention has been made in consideration of these problems, and protects the auxiliary devices arranged near the exhaust muffler from the heat of the exhaust muffler without increasing the cost. It is an object of the present invention to provide a motorcycle supporting structure capable of reliably supporting a machine.

[0006]

In order to achieve the above object, a motorcycle supporting structure for a motorcycle according to the present invention covers the exhaust muffler with a space between the exhaust muffler and the exhaust muffler. A muffler cover is provided to shield between the auxiliary equipment and exhaust muffler arranged near the muffler.This muffler cover is fixed to the exhaust muffler side, and the auxiliary equipment is supported by a stay member protruding from the muffler cover. It was done.

[0007]

With this configuration, the muffler cover shields the radiant heat from the exhaust muffler to the auxiliary equipment, and at the same time, prevents heat conduction to the auxiliary equipment to protect the auxiliary equipment, and To be surely supported. Therefore, auxiliary equipment can be indirectly supported by the exhaust muffler, and other auxiliary equipment support members can be reduced. Note that the muffler cover has conventionally been attached to the side surface of the exhaust muffler, and is merely extended to the auxiliary equipment side, so that the cost does not increase.

[0008]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a right side view of a scooter showing an example of a motorcycle to which the present invention is applied. This scooter 1
Has a general vehicle body layout. An engine unit 5 is connected via a link 4 to a center lower portion of a vehicle body frame 3 covered with a frame cover 2, and a rear wheel 6 is attached to a rear portion of the engine unit 5. Supported.

An exhaust pipe 8 extends rearward from the lower surface of the cylinder 7 of the engine unit 5, and an exhaust muffler 9 is provided.
It is connected to. A muffler stay 11 is fixed to the exhaust muffler 9, and the muffler stay 11 is fastened to the engine unit 5 by screws 12 and 13. A silencer 14 is provided at the rear end of the exhaust muffler 9.

Above the exhaust muffler 9, an air cleaner 15, which is one of accessories, is arranged. The air cleaner 15 has, for example, a substantially rectangular parallelepiped shape extending in the front-rear direction. A front portion of the air cleaner 15 is supported by the engine unit 5 by screws 16 and 17, and a rear portion thereof is a muffler cover 18 that covers the exhaust muffler 9.
Are supported by screws 19.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, and FIGS. 3 and 4 are a plan view and a side view taken along the arrows III and IV of FIG. 2, respectively.

The exhaust muffler 9 has a double pipe structure in which catalyst plates 23 and 24 having, for example, a punching plate carrying a catalyst component are installed inside muffler bodies 21 and 22 welded in the middle. Sound absorbing material 2 such as glass wool between the bodies 21 and 22 and the catalyst plates 23 and 24;
5 is filled.

The muffler cover 18 is made of a metal plate or the like, is curved in accordance with the contour of the exhaust muffler 9, and is provided with a space between the muffler 9 and the exhaust muffler 9. This muffler cover 18
Is interposed between the exhaust muffler 9 and the air cleaner 15 and covers the side surface of the exhaust muffler 9 to prevent an occupant of the scooter 1 from touching the exhaust muffler 9 and getting burned. The periphery of the muffler cover 18 is bent over the entire circumference toward the exhaust muffler 9 to form a flange 26, which contributes to improving the rigidity of the muffler cover 18 and preventing injury.

For example, two nuts 27 are fixed to the muffler bodies 21 and 22, and the muffler cover 18 is fastened to the exhaust muffler 9 by fastening the muffler cover 18 to the nut 27 with screws 28. Is done. The nut 27 also serves as a spacer for providing a space between the exhaust muffler 9 and the muffler cover 18.

A stay mounting hole 29 is formed in the muffler cover 18, and an air cleaner 1 is provided at an edge of the stay mounting hole 29.
An air cleaner stay 31 standing on the fifth side is fixed by spot welding or the like. This air cleaner stay 31
Corresponds to an example of a "stay member" described in the claims, and a nut 32 is fixed to a surface of the vehicle body side. Note that the air cleaner stay 31 is
Muffler cover 1 by cutting a part of 8 and bending it
8 may be provided integrally.

The air cleaner 15 has a general structure in which a cleaner element 34 such as a sponge is accommodated in a cleaner case 33 made of synthetic resin.
A case bracket 35 is vertically provided on the lower surface of the muffler cover 18 so as to overlap the air cleaner stay 31 of the muffler cover 18. A rubber bush 36 is fitted into the case bracket 35, a spacer 37 and a screw 19 are inserted into the rubber bush 36, and the screw 19 is fastened to the nut 32. Thus, the air cleaner 15 is securely supported by the exhaust muffler 9 via the muffler cover 18. In addition,
The vibration from the exhaust muffler 9 is absorbed by the rubber bush 36 and is not transmitted to the air cleaner 15.

With this configuration, the radiant heat from the exhaust muffler 9 is effectively blocked by the muffler cover 18, and there is no possibility that the radiant heat will be transmitted to the air cleaner 15. Further, since the heat of the exhaust muffler 9 is cooled while being transmitted through the nut 27 and the muffler cover 18, the air cleaner stay 31 does not become hot, and the heat conduction to the air cleaner 15 is prevented. Therefore, it is not necessary to take heat-resistant measures for the cleaner case 33 and the case bracket 35 of the air cleaner 15, and the air cleaner 15 can be manufactured at low cost.

In addition, the exhaust muffler 9 does not cause heat damage to the air cleaner 15 as described above.
Can be reliably supported, so that it is not necessary to provide an auxiliary device support member such as a special stay or bracket on the other part of the vehicle body, and the manufacturing cost can be reduced also in this regard.

Conventionally, a muffler cover that covers only the side surface of the exhaust muffler 9 is commonly used, and its fixing structure is a fixing structure of the muffler cover 18 in this embodiment (a nut 27 fixed to the muffler bodies 21 and 22). The muffler cover 18 is fastened to the muffler cover 18 with a screw 28), so that there is no particular increase in cost when attaching the muffler cover 18 of this embodiment to the exhaust muffler 9. Moreover, since it is not necessary to weld the supporting stays of the auxiliary devices to the exhaust muffler 9 unlike the conventional case, the number of welding parts of the exhaust muffler 9 can be reduced.
This can also contribute to cost reduction.

[0021]

As described above, the accessory supporting structure for a motorcycle according to the present invention covers the exhaust muffler with a space between the exhaust muffler, and is disposed near the exhaust muffler. A muffler cover for shielding between the auxiliary equipment and the exhaust muffler is provided, the muffler cover is fixed to the exhaust muffler side, and the auxiliary equipment is supported by a stay member protruding from the muffler cover. Is what you do.

According to this structure, the muffler cover shields the radiant heat from the exhaust muffler from the auxiliary equipment, and at the same time, prevents heat conduction to the auxiliary equipment, and reliably supports the auxiliary equipment. Eliminates the need to take heat-resistant measures for the machinery, weld auxiliary stays to the exhaust muffler, and to provide a dedicated accessory support member on the vehicle body. Cost increase can be avoided.

[Brief description of the drawings]

FIG. 1 is a right side view of a scooter showing an example of a motorcycle to which the present invention is applied.

FIG. 2 shows an embodiment of the present invention, and FIG.
Sectional drawing which follows the II line.

FIG. 3 is a plan view as viewed from the arrow III in FIG. 2;

FIG. 4 is a side view taken along the arrow IV in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scooter which shows an example of a motorcycle 2 Engine unit 8 Exhaust pipe 9 Exhaust muffler 15 Air cleaner as auxiliary equipment 18 Muffler cover 19, 28 Screw 27, 32 Nut 31 Air cleaner stay as stay member 35 Case bracket 36 Rubber bush 37 Spacer

Claims (1)

(57) [Claims] An exhaust muffler cover is provided to cover the exhaust muffler with a space between the exhaust muffler and to shield between an auxiliary device arranged near the exhaust muffler and the exhaust muffler. An accessory supporting structure for a motorcycle, wherein the cover is fixed to an exhaust muffler side and the accessory is supported by a stay member protruding from the muffler cover.