JPH03237212A - Heat shielding cover for exhaust pipe and muffler of engine - Google Patents

Abstract

PURPOSE:To reduce the installation space by applying the a metal screen on the outside of a heat shielding cover consisting of steel plates, etc., installing the heat shielding cover, keeping a gap, on the outside of an exhaust pipe, suppressing the temperature rise of the heat shielding cover by the metal screen and reducing the above-described gap. CONSTITUTION:A heat shielding cover 1 is formed is formed to a shape covering the outside of an exhaust pipe 3 of an engine 2 by using steel plates, etc. In this case, a metal screen 4 consisting of stainless steel material, etc. is applied on the outside surface of the heat shielding cover 1. The heat shielding cover 1 is installed, keeping a gap 5 on the outside of the exhaust pipe 3, so as to cover the outside of the exhaust pipe 3. Though, when the gap 5 is reduced, the radiation heat quantity of the exhaust pipe 3 which the heat shielding cover 1 receives increases, and the temperature rise increases, the metal screen 4 applied on the surface of the heat shielding cover 1 has a small contact area with the heat shielding cover 1, and the received heat quantity is small. Since the contact area with the air is large and heat dissipation performance is improved, the temperature rise of the metal screen 4 can be suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a heat shield cover for an exhaust pipe and muffler of an engine used in a motorcycle or the like.

[Conventional technology]

The engine mounted on a motorcycle is visible and exposed, and the exhaust pipe and muffler connected to the engine are also exposed. Exhaust pipes and mufflers become hot as they receive exhaust heat from the engine. Therefore, heat shielding covers are installed on the outside of the exhaust pipe where the engine's kick lever is folded close, and on the muffler, which is located on the outside and is easily hit, to prevent burns from directly hitting the exhaust pipe or muffler. That's what I do. The heat shield cover is usually a heat shield cover B made of steel plate or stainless steel plate, which is shaped to cover the outside of the exhaust pipe A, as shown in Figure 4 or Figure 5.
Attach the heat shield cover B to the stay C protruding from the exhaust pipe A with bolts, etc., and cover the outside of the exhaust pipe A with a gap so that it does not come into direct contact with the exhaust pipe A. There is. Furthermore, as shown in FIG. 6, there is also a type in which a heat insulating material E is applied to the inner surface of the heat shield cover B. For example, Jikko 6
See Publication No. 1-5317.

[Problem to be solved by the invention]

The heat shield cover B that covers the exhaust pipe A receives radiant heat from the exhaust pipe A. Therefore, unless the gap between the exhaust pipe A and the overheating cover B is made large, the temperature of the heat shielding cover B will rise. Increasing the gap requires a larger space for installing the heat shield cover B, which is disadvantageous in that it takes up a lot of space.

In view of the above, the present invention allows a heat shield cover to be installed close to the outside of the exhaust pipe or muffler with a small gap, and the installation space is reduced, and furthermore, it is not dangerous if it hits the exhaust pipe or muffler of the engine. The purpose is to obtain a heat shield cover for a muffler.

[Means to solve the problem]

In order to achieve the above object, the exhaust pipe of the engine of the present invention has a wire mesh placed on the outside of a rapid heating cover made of a steel plate, and a heat shielding cover is attached to the outside of the exhaust pipe with a gap. It is in.

Further, in the heat shielding cover for a muffler of the present invention, a wire mesh is stretched on the outside of the heat shielding cover made of a steel plate or the like, and the heat shielding cover is attached to the outside of the muffler with a gap provided therebetween.

[Effect]

A heat shielding cover attached to the outside of an exhaust pipe or muffler with a gap therebetween receives more radiant heat from the exhaust pipe or muffler when the gap is smaller, and becomes hotter. However, the wire mesh stretched outside the overheating cover has a small contact area with the heat shielding cover and receives a small amount of heat. Also, wire mesh has good heat dissipation properties because many parts are exposed to the atmosphere. For this reason, the wire mesh has a small temperature rise, and the surface temperature can be lowered so that there is no problem even if it gets hit. The heat shield cover can be installed with a small gap between it and the exhaust pipe or muffler, making the installation space small and compact.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

The heat shield cover 1 is formed using a steel plate or a stainless steel plate into a shape that covers the outside of the exhaust pipe 3 of the engine 2. Then, a wire mesh 4 made of stainless steel wire or the like is stretched on the outer surface of the heat shield cover 1. The heat shield cover 1 is attached with a gap 5 provided outside the exhaust pipe 3 so as to cover the outside of the exhaust pipe 3. When the gap 5 is made smaller, the amount of radiant heat from the exhaust pipe 3 that the heat shield cover 1 receives increases, resulting in a higher temperature. The amount of heat received is small. Since the area exposed to the atmosphere is large and the heat dissipation is good, the rise in temperature of the wire mesh 4 can be suppressed, and even if the wire mesh 4 is hit, there will be no problem. Furthermore, near the outside of the heat shield cover 1, there is a kick lever 6 of the engine 2.
is folded.

The rear end of the exhaust pipe 3 is inserted and connected to the muffler 7. and,
On the outside of the muffler 7, a heat shielding cover 1 having a wire mesh 4 stretched on the outside can be attached in exactly the same way.

〔Effect of the invention〕

As explained above, since the present invention is constructed as described above, a heat shielding cover having a wire mesh on the outer surface is attached to the outside of the exhaust pipe or muffler with a gap provided therein, and receives the radiant heat of the exhaust pipe or muffler. Even if the temperature of the heat shield cover rises, the outer wire mesh can suppress the temperature rise because it receives less heat and has good heat dissipation. Therefore, the gap between the exhaust pipe or muffler and the heat insulating cover can be reduced, the mounting space can be reduced, and the system can be made compact.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a side view of the main parts, FIG. 2 is a cross-sectional view of the same, FIG. 3 is a side view of the whole, and FIGS. 5 shows a conventional example, FIG. 4 is an enlarged cross-sectional view of a main part, FIG. 5 is a side view, and FIG. 6 is a cross-sectional view showing another conventional example. 1... Heat shield cover 2... Engine, 3... Exhaust pipe, 4... Wire mesh, 5... Gap, 7... Muffler.

Claims (1)

[Claims] 1. A wire mesh is placed on the outside of a heat shielding cover made of steel plate, etc.
An engine exhaust pipe characterized in that a heat shielding cover is attached to the outside of the exhaust pipe with a gap provided. 2. Put a wire mesh on the outside of the heat shielding cover made of steel plate, etc.
A heat shielding cover for a muffler, characterized in that the heat shielding cover is attached to the outside of the muffler with a gap provided.