JPH05209519A - Auxiliary machine supporting structure of motorcycle - Google Patents

Abstract

PURPOSE:To provide an auxiliary machine supporting structure of a motorcycle, which ensures protecting an auxiliary machine arranged in the vicinity of an exhaust muffler against the heat of the exhaust muffler, and thus ensures supporting the auxiliary unit, without increasing the cost. CONSTITUTION:A muffler cover 18 coated around an exhaust muffler 9 is interposed at an interval between the exhaust muffler 9 and an auxiliary machine (an air cleaner 15), and the auxiliary machine is thus supported with the muffler cover 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary machine supporting structure for a motorcycle which supports auxiliary machines arranged near an exhaust muffler.

[0002]

2. Description of the Related Art It is necessary to arrange a large number of auxiliary machines in a narrow space in a motorcycle body. In particular, in a scooter, a large-capacity article storage chamber that can accommodate a helmet or the like is provided under the seat, so auxiliary equipment such as an air cleaner is pushed outside the vehicle body and placed near the exhaust muffler. Often becomes. In this case, a stay supporting the auxiliary machinery is welded to the exhaust muffler, and the auxiliary machinery is screwed to the stay.

[0003]

By the way, a recent exhaust muffler for a motorcycle has a built-in catalyst for complying with exhaust gas regulations, and the exhaust muffler is extremely heated by the reaction heat between the exhaust gas and the catalyst. The temperature rises and the radiant heat also increases. For this reason, when the stay is welded to the exhaust muffler to support the auxiliary machinery, it is necessary to take heat resistance measures on the mounting portion on the auxiliary machinery side and the auxiliary machinery main body. Moreover, since the stay is welded to the exhaust muffler, the number of welded parts of the exhaust muffler is increased.

These matters increase the manufacturing costs of the auxiliary machinery and the exhaust muffler. The present invention has been made in view of these problems, and protects the auxiliary machinery arranged in the vicinity of the exhaust muffler from the heat of the exhaust muffler without increasing the cost, and is capable of reliably supporting it. An object of the present invention is to provide a supporting structure for accessories of a motorcycle.

[0005]

In order to achieve the above object, an auxiliary equipment supporting structure for a motorcycle according to the present invention supplements an exhaust muffler with a muffler cover provided around the exhaust muffler with a space. The auxiliary equipment is supported by the muffler cover, which is interposed between the auxiliary equipment and the equipment.

[0006]

With this structure, the muffler cover shields the radiant heat from the exhaust muffler and at the same time blocks the heat conduction to the auxiliary machinery and surely supports the auxiliary machinery. The muffler cover has been conventionally attached to the side surface of the exhaust muffler, and since the muffler cover is extended to the auxiliary machinery side, the cost does not increase.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 to a lower center of a vehicle body frame 3 covered with a frame cover 2 via a link 4, and a rear wheel 6 is attached to a rear portion of the engine unit 5. It is 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
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 with 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 auxiliary machinery, is arranged. The air cleaner 15 has, for example, a substantially rectangular parallelepiped shape extending in the front-rear direction, a front portion thereof is supported by the engine unit 5 by screws 16 and 17, and a rear portion of the muffler cover 18 covers the exhaust muffler 9.
It is supported by screws 19.

FIG. 2 is a 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 line III and IV of FIG. 2, respectively.

The exhaust muffler 9 has a double pipe structure in which, for example, catalyst plates 23 and 24 in which a catalyst component is supported on a punching plate are installed inside the muffler bodies 21 and 22 welded together in the middle. A 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 according to the contour of the exhaust muffler 9, and is provided with a space from the exhaust muffler 9. This muffler cover 18
Is provided 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 being burned. The peripheral portion of the muffler cover 18 is bent toward the exhaust muffler 9 side along the entire circumference 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 nuts 27 with screws 28. The nut 27 also serves as a spacer that provides 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 the air cleaner 1 is provided at the edge of the stay mounting hole 29.
An air cleaner stay 31 standing upright on the No. 5 side is fixed by spot welding or the like. A nut 32 is fixed to the surface of the air cleaner stay 31 on the vehicle body side. The air cleaner stay 31 may be provided integrally with the muffler cover 18 by cutting and bending the muffler cover 18.

The air cleaner 15 has a general structure in which a cleaner element 34 such as a sponge is housed in a cleaner case 33 made of synthetic resin.
On the lower surface of 3, a case bracket 35 is vertically provided so as to overlap with 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. In this way, the air cleaner 15 is reliably 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.

Due to this structure, the radiant heat from the exhaust muffler 9 is effectively shielded by the muffler cover 18 and is not likely to be transmitted to the air cleaner 15. Further, the heat of the exhaust muffler 9 is cooled while being transmitted through the nut 27 and the muffler cover 18, so that the temperature of the air cleaner stay 31 does not rise and the heat conduction to the air cleaner 15 is prevented. Therefore, it is not necessary to take heat resistance measures on 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.

Conventionally, a muffler cover for covering only the side surface of the exhaust muffler 9 is provided, and the fixing structure thereof is the fixing structure of the muffler cover 18 in this embodiment (two screws 2).
8 is fastened to the muffler bodies 21 and 22), there is no increase in cost when the muffler cover 18 of this embodiment is attached to the exhaust muffler 9. Moreover, unlike the conventional case, it is not necessary to weld the support stays of the auxiliary machines to the exhaust muffler 9, so that the number of welded parts of the exhaust muffler 9 can be reduced and the cost can be reduced.

[0019]

As described above, in the auxiliary equipment supporting structure for a motorcycle according to the present invention, a muffler cover mounted around the exhaust muffler with a space is provided between the exhaust muffler and the auxiliary equipment. It is characterized in that the above-mentioned accessories are supported by this muffler cover.

Therefore, the muffler cover shields the radiant heat from the exhaust muffler and at the same time prevents the heat conduction to the auxiliary machinery and securely supports the auxiliary machinery. Therefore, it is not necessary to heat-treat the auxiliary machines and it is not necessary to weld the support stays of the auxiliary machines to the exhaust muffler, and the manufacturing costs of the auxiliary machines and the exhaust muffler can be reduced.

[Brief description of drawings]

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

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

FIG. 3 is a plan view taken along the arrow III in FIG.

FIG. 4 is a side view taken along the line IV of FIG.

[Explanation of symbols]

 1 Scooter showing an example of a motorcycle 2 Engine unit 8 Exhaust pipe 9 Exhaust muffler 15 Air cleaner 18 Muffler cover 19,28 Screw 27,32 Nut 31 Air cleaner stay 35 Case bracket 36 Rubber bush 37 Spacer

Claims (1)

[Claims] 1. A muffler cover, which is mounted around the exhaust muffler with a space, is interposed between the exhaust muffler and the accessories, and the muffler cover supports the accessories. Auxiliary equipment support structure for motorcycles.