JPH02249778A - Ventilating device of motorcycle - Google Patents

Abstract

PURPOSE:To prevent heat from being confined in a space by providing a fan which performs ventilation in the highest protruding part of the space, in the case of a motorcycle housing an exhaust pipe in the space surrounded by a side cover, a seat and a tail cover. CONSTITUTION:A motorcycle arranges a fuel tank 4 in the upper of an engine 3 and a main seat 5 and a tandem seat 6 behind the fuel tank 4, housing in space S, surrounded by these 5, 6, side cover 7 and a tail cover 8, an exhaust pipe 9 extending to the rear from each cylinder of the engine 3 and a silencer 10 connected to the rear of the exhaust pipe 9. In this case, the side cover 7 opens to its rear one side of a circular ventilating port 16 arranging in its inside a fan 17. This fan 17 is arranged in the highest protrusive part S1 of the space S so as to be controlled to be driven by detecting through a temperature sensor an ambient temperature, when it rises to not less than a predetermined value, in the space S.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ventilation system for a motorcycle in which an exhaust pipe is housed in a space surrounded by a side cover, a seat, and a tail cover.

(Prior Art) Some motorcycles have an exhaust pipe housed in a space surrounded by a side cover, a seat, and a tail cover (see, for example, Japanese Patent Laid-Open No. 6923-08). When a motorcycle is running, heat from the exhaust pipe is effectively discharged outside the space by the wind passing through the space, so there is no hot air trapped in the space, causing discomfort to the rider. I have nothing to give.

(Problem to be solved by the invention) However, when the motorcycle is stopped with the engine running due to waiting at a traffic light, etc., the wind from the exhaust pipe does not pass through the space. Heat is trapped in the space, causing the seat to heat up and making the rider feel uncomfortable.

The present invention has been made in view of the above problems, and its object is to provide a motorcycle that does not cause discomfort to the rider by preventing hot air from accumulating in the space that accommodates the exhaust pipe. Provide ventilation equipment.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a ventilation system including a fan that ventilates the highest convex part of the space surrounded by the side cover, seat and tail car of a motorcycle. It is characterized by comprising the following.

(Function) When a motorcycle is stopped with the engine running, the running wind does not flow through the space that houses the exhaust pipe, so the hot air heated by the heat from the exhaust pipe rises and fills the space. It stays at the highest convex part inside. However, according to the present invention, this hot air is discharged outside the space by the fan, so that the sheets etc. are not heated by the hot air.
The rider does not feel any discomfort, and since the space is exhausted by the wind while the motorcycle is running, there are no problems like in the past.

(Example) An example of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a cutaway side view of the essential parts of a motorcycle equipped with a ventilation system according to the present invention, FIG. 2 is a side view of the rear part of the motorcycle, and FIG. 3 is a sectional view taken along the line in FIG. 1.

Diagram N44 is an enlarged group m diagram of section A in FIG. 3.

In the motorcycle 1 shown in FIG. 1, 2 is a main frame, and the main frame 2 supports a water-cooled two-stroke, two-cylinder engine 3.

Further, a fuel tank 4 is arranged above the engine 3, and a main seat 5 and a tandem seat 6 are arranged behind the fuel tank 4. In the space S surrounded by the seats 5, 6, the site cover 7, and the tail cover 8, there are two exhaust pipes 9, 9 extending rearward from each cylinder of the engine 3, and each of these exhaust pipes. A connected silencer 10.10 is accommodated. Furthermore, these exhaust pipes 9
．． 9 and the silencers 10 and 10 are covered with a heat shield plate 11 made of resin, and the heat shield plate 11 covers the two left and right seat rails 1 extending rearward from the main frame 2.
Installation is supported in 2.12. Also, in Figure 1, 13
14 is a radiator, and 14 is an air cleaner. The air cleaner 14 is connected to a carburetor (not shown) via an intake duct 15.

By the way, in this embodiment, a circular ventilation hole 16 is opened on one side of the rear part of the site cover 7 as shown in FIG. A fan 17 is provided as shown in FIG. Note that the ventilation opening 16 is covered with a mesh 18.

The fan 17 is installed in the highest convex portion S of the space S shown in FIG. 1 (a portion below the tandem seat 6), and is directly connected to the motor 19 as shown in detail in FIG. The motor 19 is connected to a power source 20 as shown in FIG. Further, a temperature sensor 21 is attached to the heat shield plate 11 at a position between both the erasers 10 and 10, and one end of the temperature sensor 21 is connected to the motor 19 as shown in FIG. , the other end is connected to the power source 20 via a contact 22a of the timer 22. Note that this temperature sensor 21 detects the atmospheric temperature in the space S, and if the value is below a predetermined value, the temperature is 0F
FL/ is turned on when it exceeds a predetermined value.

Furthermore, in the electrical circuit shown in FIG.
There is a coil 22b of the timer 22 and a main switch 23.
A series circuit is connected in parallel with the power supply 20, the contact 22a of the timer 22, the temperature sensor 21, and the motor I.
9 constitutes a closed circuit. The timer 22 has a contact 22a that turns on when the main switch 23 is turned on, and turns off the contact 22a after a predetermined time when the main switch 23 is turned off.

Then, fan 17, motor 19. Temperature sensor 21
In addition, the power supply 20, timer 22, main switch 23, etc. that constitute the electric circuit shown in FIG. 3 constitute the ventilation apparatus according to the present invention.Next, the operation of the ventilation apparatus will be explained.

When the main switch 23 is turned ON and the engine 3 is started, the contact 22a of the timer 22 is turned ON as described above.

By the way, when the motorcycle l is running, the space S is ventilated by the running wind, so the atmospheric temperature in the space S rises above a predetermined value due to exhaust heat from the exhaust pipes 9, 9 and the silencer 10.10. As mentioned above, the temperature sensor 21 is in the OFF state when the atmospheric temperature in the space S is below a predetermined value. While the motor is running, no current flows from the power supply 20 to the motor 19, and the fan 17 is not driven.

However, when waiting at a traffic light, etc., the motorcycle
If the car is stopped with the engine running, no wind will flow through the space S, so the exhaust pipe 9.9 and the silencer 10.
Hot air warmed by the exhaust heat from the space S accumulates in the highest convex portion S, and the ambient temperature of the convex portion S1 rises. If the ambient temperature exceeds a predetermined value, the temperature sensor 21 is turned on and the motor 19 is connected to the power source 20 as described above.
9 drives the fan 17, and outside air is introduced into the convex portion S1 through the ventilation hole 16 formed in the side cover 7, or hot air from the convex portion S8 is discharged to the outside, and the convex portion S1 is ventilated. Ru. As a result, the seat 5.6 is not heated by hot air, and the rider does not feel any discomfort.

After that, the main switch 23 is turned off to stop the engine 3.
is 0FFL, the timer 22 turns on the contact 22a for a predetermined time as described above, so if the ambient temperature in the space S is above the predetermined value and the temperature sensor 21 is in the ON state, the main Turn off switch 23
Even after this, the fan 17 is driven for a predetermined period of time to ventilate the space S.

By the way, as in the second embodiment, if the fan 17 is installed in the convex portion S0 where hot air accumulates in the space S, and ventilation is performed only in the convex portion SI, the ambient temperature of the entire space S can be lowered. , the structure of the ventilation device is simplified. still,
The fan 17 does not necessarily need to be installed on the convex portion S1, and if the duct connected to the fan 17 is opened in the convex portion S1, the fan 17 can be installed in the tail case 8 or any other arbitrary position without the convex portion. Ventilation of S8 can be performed effectively. Further, the ventilation effect by the fan 17 may be exerted between the sheets 5 and 6 or the site cover 7 and the heat shield plate 11.

(Effects of the Invention) As is clear from the above description, according to the present invention, a ventilation system including a fan that ventilates the highest convex portion of the space surrounded by the side cover, seat, and tail cover of a motorcycle is provided. Because of this structure, even when the vehicle is stopped, hot air does not accumulate in the space and the rider does not feel uncomfortable.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view of the essential parts of a motorcycle equipped with a ventilation system according to the present invention, FIG. 2 is a side view of the rear part of the motorcycle, and FIG. 3 is a sectional view taken along line mm in FIG. 1. FIG. 4 is an enlarged detailed view of section A in FIG. 3. l...Motorcycle, 3...Engine, 5,6...
Seat, 7... Site cover, 8... Tail cover, 9... Exhaust pipe, 17... Fan, 19... Motor, 20... Power supply, 2... Temperature sensor, 22
...Timer 23...Main switch.

Claims (1)

[Claims] A device installed in a motorcycle that accommodates an exhaust pipe leading out from an engine cylinder in a space surrounded by a side cover, a seat, and a tail cover, and includes a fan that ventilates the highest convex part of the space. A ventilation system for a motorcycle characterized by comprising: