JP2588410Y2 - Exhaust silencers for motorcycles, etc. - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust silencer applied to an exhaust system of a motorcycle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3 (A), an opening end 10 of an exhaust pipe 101 for ejecting exhaust gas projecting from a muffler 100 in order to regulate the direction of ejection of exhaust gas.
It is known that the exhaust pipe 101 is bent so that 2 faces the road surface side, or the open end 102 is cut obliquely so that the exhaust gas is ejected toward the road surface as shown in FIG. ing.

[0003]

[Problems to be solved by the invention] In the conventional technology,
In the case where the direction in which the exhaust gas is ejected is regulated by the bending of the exhaust pipe 101, there is a problem that the bending is complicated. In addition, in the case of restricting the direction in which the exhaust gas is ejected by cutting the opening end portion 102 obliquely, although the opening area increases and carbon clogging is reduced, an end surface treatment such as hemming is required, which requires more man-hours. Had problems.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to eliminate the need for a complicated bending process and to require an end surface treatment of an opening end. It is an object of the present invention to provide an exhaust muffler for a motorcycle or the like that can regulate the direction in which exhaust gas is ejected in a desired direction.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a tail pipe for ejecting exhaust gas at a rear end.
An exhaust silencer covered with a shell with a spherical surface
Open a sufficiently large opening on the side of the outer shell
Open end of tail pipe cut diagonally in the center of the opening
The gap between the opening and the end of the opening.
It is characterized by being closed with a tool member.

[0006]

[Function] By covering the tail pipe with the outer member forming the opening, even if the opening end of the tail pipe is cut obliquely, the man-hour for processing the tail pipe is not increased.
The direction in which the exhaust gas is ejected is regulated in a desired direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view of a motorcycle equipped with an exhaust muffler such as a motorcycle according to the present invention, and FIG. 2 is a longitudinal sectional view of a main part of the exhaust muffler such as the motorcycle according to the present invention.

As shown in FIG. 1, in a motorcycle equipped with an exhaust silencer such as a motorcycle according to the present invention,
The front wheel 3 is cantilevered to the left by a front fork 2 at the lower front side of the front fork.
Is rotatably supported by a head pipe (not shown).

At the upper end of the front fork 2, a handle grip 5 is disposed at the end of a bar-shaped handle covered by a handle cover 4 having the appearance of a handle on the top bridge. On the front surface of the cover 4, a headlight 6 facing forward and direction indicator lights 7 located on both left and right sides thereof are provided. Also, body 1
Is covered by a leg shield 8.

On the other hand, from the front side to the rear side of the vehicle body 1, a vehicle body frame 10 is formed, and a power unit 11 is provided substantially below the center of the vehicle body frame 10. Vessel 12
An upstream exhaust pipe 13 provided on the right side of the vehicle body 1
It is attached so that it becomes parallel.

Further, a step 14 for placing a foot is provided at the lower end of the body frame 10, and a chain cover 16 formed to double-support the rear wheel 15 on the right side and also to function as a swing arm is rotated. and it is rotatably supported.

The vehicle body frame 10 is covered with a leg shield 8, a power unit cover 17, a vehicle body cover 18 extending to the upper rear of the rear wheel 15, and the like, and a seat 19 and a carrier 20 are disposed above the vehicle body cover 18. Have been. In addition, 21 is a fuel tank and 22 is a tank cap.

As shown in FIG. 2, the exhaust silencer 12 includes a muffler (not shown) and a tail pipe 2 projecting from the muffler.
5 and an outer shell member 26 for covering the muffler and the tail pipe 25 so as to be fitted therein.

The outer member 26 has an open end 25 formed by cutting the end of the tail pipe 25 obliquely on the side surface of the rear end.
Only the opening 26a larger than a is formed. Then, the opening end 25a of the tail pipe 25 and the opening 26a of the outer member 26 are joined and joined via the seal member 27, and the exhaust port 12a as the exhaust silencer 12 is formed. The exhaust port 12a is that not oriented as direct exhaust gas hits the road surface.

The operation of the exhaust silencer 12 for a motorcycle or the like configured as described above will be described. By covering the tail pipe 25 with the outer shell member 26 having only the opening 26a at the rear end, the opening end 25 of the tail pipe 25 is formed.
Even if a is cut diagonally, the exhaust port 12 as an exhaust silencer 12 of a motorcycle or the like does not require an end face treatment such as hemming processing and does not increase the number of processing steps of the tail pipe 25.
a can be formed at a desired position.

Therefore, it is possible to regulate the direction in which the exhaust gas is ejected so that the exhaust gas directly hits a desired direction, for example, the road surface.

[0017]

As described above, according to the present invention, it is possible to restrict the exhaust gas jetting direction to a desired direction without using a complicated bending process and without necessitating an end surface treatment of an opening end. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a side view of a motorcycle equipped with an exhaust silencer such as a motorcycle according to the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the exhaust silencer of the motorcycle according to the present invention;

3A and 3B are schematic side views of a conventional exhaust gas ejection direction restricting means, in which FIG. 3A is a bent exhaust pipe, and FIG. 3B is an exhaust pipe with an open end cut obliquely.

[Explanation of symbols]

1 ... body, 11 ... power unit, 12 ... exhaust silencer,
25 ... tail pipe, 25a ... open end of tail pipe, 26 ... outer member, 26a ... opening of outer member , 27
... Seal member.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-195312 (JP, A) JP-A-59-110822 (JP, A) JP-A-58-126418 (JP, A) JP-A-2- 64214 (JP, A) Actually open 48-9843 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F01N 1/08 F01N 7/20

Claims (1)

(57) [Scope of request for utility model registration] 1. A tail pipe (2 ) for ejecting exhaust gas.
5) is covered with an outer member (26) having a spherical surface at the rear end.
An exhaust silencer (12) having a sufficiently large diameter opening (2) on the side surface of the outer member (26).
6a), and cut diagonally in the center of this opening (26a).
Facing the open end (25a) of the cut tail pipe,
Between the opening (26a) and the opening end (25a)
An exhaust silencer for a motorcycle or the like, wherein the gap is closed by a seal member (27) .