JPS5830088Y2 - Motorcycle muffler water draining device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a water draining device for a muffler of a motorcycle.

There are two types of motorcycle mufflers: a down muffler that runs below the engine, and an up muffler that runs above the engine.

The latter is often used for sports cars that require a lot of ground clearance.

Moisture contained in the intake air accumulates in the muffler.

With a down muffler, all you need to do is provide drainage holes at appropriate locations, and there is no need for drainage to hit the occupants.
Since the amplifier muffler is installed at a high position,
Having only a water drain hole is inconvenient because water may splash onto the occupants.

For this reason, a drain plug is installed to drain the water.

However, in cold regions, the water freezes and must be heated before it can be drained.

Furthermore, if this is left unattended, the muffler will become clogged and it will be difficult to start, so it is necessary to drain the water each time it is used, which is time consuming.

This invention has been improved in view of these points, and an embodiment of the invention shown in the drawings will be described below.

A connecting pipe 4 is connected to the rear end of a first muffler 3 connected to an exhaust port 2 of an engine 1, and a second muffler 5 is further connected to the connecting pipe 4.

Then, exhaust gas is released from the rear end of the second muffler 5.

Therefore, the present invention curves the center of the connecting pipe 4 downward 6,
A drain hole 7 is provided at the lower end of the curved portion 6.

The drain hole 7 is provided with the drain port 9 of the catch piece 8,
A drain pipe 10 hanging downward is connected to the water drain port 9.

The receiver piece 8 is attached to the band 1 as shown in FIGS. 1 and 2.
1, or as shown in FIG. 4, the receiver may be made into a band made of rubber and inserted into the outer periphery of the connecting pipe 4.

FIG. 5 shows another embodiment, in which a connecting tube 12 is provided on the band 11, and a pipe 10 is connected to this connecting tube 12.

The effect will be explained.

Moisture contained in the exhaust gas is removed from the first muffler 3 and connecting pipe 4.
, adheres to the pipe wall of the second muffler 5 and naturally connects the connecting pipe 4 due to gravity.
The water flows to the downward curved portion 6 of .

Then, the drain hole 7 and the receiver flow through the drain hole 9 of the piece to the pipe 10 and fall downward.

These occur naturally during and after driving, and do not fall through the water pipe 10 and hit the occupants.

When there is no fear of freezing, such as in the summer, the drain hole 7 and the drain port 9 can be closed by shifting their positions as shown in FIG.

Further, the bridge piece 8, band 11, etc. can be attached later, so they are attached for cold regions, but do not need to be attached for warm regions.

As explained above, this invention connects the second muffler to the rear end of the first muffler connected to the engine exhaust port via a connecting pipe, and discharges exhaust gas from the rear end of the second muffler. In this case, the center of the connecting pipe is curved downward, a drain hole is provided at the lower end of the curved part, and one end of the drain pipe is inserted into the drain hole with the other end hanging down and opening below the vehicle body. Since these are connected and communicated, the moisture contained in the exhaust gas falls as appropriate and falls under the vehicle body through the drain hole and the pipe.

And it doesn't affect the crew.

In this way, it is possible to prevent water from accumulating and freezing inside the muffler or the connecting pipe, and to prevent starting problems.

Additionally, the drain holes, receiver pieces, pipes, etc. can be added later, so they can be installed only for use in cold regions.

Also, since the drain hole and the drain port can be offset and closed, they can be closed during the summer.

[Brief explanation of drawings]

Fig. 1 is a side view showing one embodiment of the present invention, and Fig. 2 is a side view showing an embodiment of the present invention.
FIG. 3 is a sectional view with the hole position shifted from FIG. 2; FIG. 4 is a view corresponding to FIG. 2 showing another embodiment of the present invention; FIG. is also a cross-sectional view of another embodiment of the present invention. 1...Engine, 2...Exhaust port, 3.
...First muffler, 4...Connecting pipe, 5...
...Second muffler, 6...Curved section, 7...
...Drain hole, 8...The receiver is one piece, 9...
・Water drain port, 10...pipe.

Claims (1)

[Scope of utility model registration request] A second muffler is connected to the rear end of the first muffler connected to the exhaust port of the engine via a connecting pipe, and exhaust gas is released from the rear end of the second muffler. The motorcycle is characterized in that the curved part is curved downward, a drain hole is provided at the lower end of the curved part, and one end of a drain pipe whose other end hangs down and opens below the vehicle body is connected and communicated with the drain hole. muffler drainage device.