JPH03122217U

JPH03122217U -

Info

Publication number: JPH03122217U
Application number: JP3077290U
Authority: JP
Priority date: 1990-03-26
Filing date: 1990-03-26
Publication date: 1991-12-13

Description

[Brief explanation of the drawing]

第１図は本考案の消音器の一実施例を示す縦断
面図である。第２図は第１図の−線に沿う横
断面図である。第３図は第１図の−線に沿う
横断面図である。第４図は従来の消音器を示す縦
断面図である。主要な部分の符号の説明、３１……排気管、３
３……消音器本体、３９……仕切板、４１……導
入室、４３……共鳴室、４５……外側筒状部、４
７……内側筒状部、４９……排気音通路、５１…
…折曲部、５５……連通孔。 FIG. 1 is a longitudinal sectional view showing an embodiment of the silencer of the present invention. FIG. 2 is a cross-sectional view taken along the - line in FIG. 1. FIG. 3 is a cross-sectional view taken along the - line in FIG. 1. FIG. 4 is a longitudinal sectional view showing a conventional muffler. Explanation of symbols of main parts, 31...exhaust pipe, 3
3... Silencer main body, 39... Partition plate, 41... Introduction chamber, 43... Resonance chamber, 45... Outer cylindrical part, 4
7...Inner cylindrical part, 49...Exhaust sound passage, 51...
...Bending portion, 55...Communication hole.

Claims

[Claims for Utility Model Registration] (1) A muffler body is provided in the exhaust pipe that leads exhaust gas from the engine, a resonance chamber is formed in the muffler body, and the exhaust pipe is inserted into the resonance chamber. In the muffler, the resonance chamber is formed by a multilayer structure having at least an inner cylindrical portion and an outer cylindrical portion; A muffler, characterized in that an exhaust sound passage is formed between the exhaust pipe and the outer cylindrical part to introduce exhaust sound transmitted from the exhaust pipe into the resonance chamber. (2) The interior of the muffler main body is partitioned by a partition plate to form an introduction chamber and a resonance chamber, and exhaust sound from the exhaust pipe is introduced into the exhaust sound passage through the introduction chamber. 1. The silencer described in 1. (3) The exhaust sound passage includes an outer surface of a bent part where a part of the inner cylindrical part protrudes into the resonance chamber;
The muffler according to claim 1 or 2, wherein the muffler is formed between the inner surface of the outer cylindrical portion and the inner surface of the outer cylindrical portion. (4) The inner cylindrical part is formed with a communication hole that communicates the exhaust sound passage and the resonance chamber so as to open toward the center of the resonance chamber. Silencer.