Exhaust muffler
First Claim
1. An exhaust muffler comprising:
- an outer cylindrical body formed in a multiple-layered construction with inner and outer panels,an end plate coupled through its joint portion with at least a side of a front or a rear end of said cylindrical body, andan internally installed unit adapted to be arranged within said outer cylindrical body, said internally installed unit comprising a porous plate arranged on and spaced apart from at least one of plural inside surfaces of said outer cylindrical body and said end plate, and a partition plate adapted to partition an internal space defined by said cylindrical body in a forward and rearward direction thereof,said inner and said outer panels being integrally formed together into a substantially same configuration in a superposed relationship,wherein said inner and outer panels of said outer cylindrical body are superposed each on the other and rolled once up into a cylindrical shape simultaneously by a roll forming process.
1 Assignment
0 Petitions
Accused Products
Abstract
An exhaust muffler comprising an outer cylindrical body, front and rear end plates mounted on each end of the outer cylindrical body, porous plates fitted on the insides of the outer cylindrical body and each of the end plates, and partition plates for dividing the internal space of the outer cylindrical body into several chambers, wherein when joining the component parts with each other, three or four component parts are superposed via their joint portions each on the other and integrally joined by laser beam welding so as to obtain a reduction of welding steps and minimize the thermal influence in the manufacturing process while ensuring an air-tight condition of the partitioned chambers. When an exhaust pipe and tail pipe are connected to the end plates, respectively, they are laser beam welded to the end plates in a superposed fashion. Alternatively, the outer cylindrical body is formed in a multiple-layered construction with inner and outer panels which are so formed integral with each other as to squeeze or press inwardly, when assembling, an internally installed unit over its fill periphery, thereby not requiring particular measures for fixedly securing the internally installed unit to the outer cylindrical body. Preferably the outer cylindrical body and end plates are formed on an aluminum-plated or a stainless steel plate, thereby dispensing with a coating after welding.
31 Citations
17 Claims
-
1. An exhaust muffler comprising:
-
an outer cylindrical body formed in a multiple-layered construction with inner and outer panels, an end plate coupled through its joint portion with at least a side of a front or a rear end of said cylindrical body, and an internally installed unit adapted to be arranged within said outer cylindrical body, said internally installed unit comprising a porous plate arranged on and spaced apart from at least one of plural inside surfaces of said outer cylindrical body and said end plate, and a partition plate adapted to partition an internal space defined by said cylindrical body in a forward and rearward direction thereof, said inner and said outer panels being integrally formed together into a substantially same configuration in a superposed relationship, wherein said inner and outer panels of said outer cylindrical body are superposed each on the other and rolled once up into a cylindrical shape simultaneously by a roll forming process. - View Dependent Claims (2, 3, 4, 5)
-
-
6. An exhaust muffler comprising:
-
an outer cylindrical body formed in a multiple-layered construction with inner and outer panels, an end plate coupled through its joint portion with at least a side of a front or a rear end of said outer cylindrical body, and an internally installed unit adapted to be arranged within said outer cylindrical body, said internally installed unit comprising a porous plate arranged on and spaced apart from at least one of plural inside surfaces of said outer cylindrical body and said end plate, and a partition plate adapted to partition an internal space defined by said outer cylindrical body in a forward and rearward direction thereof, said inner and said outer panels being integrally formed together into a substantially same configuration in a superposed relationship, wherein said outer cylindrical body is formed with a pair of halves, each of which is provided with inner and outer panels pressed together and integrally formed into shape in a superposed relationship. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. An exhaust muffler comprising:
-
an outer cylindrical body formed in a multiple-layered construction with inner and outer panels, an end plate coupled through its joint portion with at least one of the front and rear ends of said cylindrical body, and an internally installed unit adapted to be arranged within said cylindrical body, said internally installed unit comprising a porous plate arranged on and spaced apart from the inside surface of at least one of said cylindrical body and said end plate, and a partition plate adapted to partition an internal space defined by said cylindrical body into chambers arranged in the longitudinal direction of said cylindrical body, wherein said outer cylindrical body is formed with at least two panels having substantially the same configuration and formed together into a cylindrical shape of a single roll by a roll forming while they are being superposed each on the other.
-
-
17. An exhaust muffler comprising:
-
an outer cylindrical body formed in a multiple-layered construction with inner and outer panels, an end plate coupled through its joint portion with at least one of the front and rear ends of said outer cylindrical body, and an internally installed unit adapted to be arranged within said outer cylindrical body, said internally installed unit comprising a porous plate arranged on and spaced apart from the inside surface of at least either one of said outer cylindrical body and said end plate, and a partition plate adapted to partition an internal space defined by said outer cylindrical body into chambers arranged in the longitudinal direction thereof, wherein said outer cylindrical body is formed with a pair of halves, each of said halves including at least two panels having substantially the same configuration and formed together into a semi-cylindrical shape by a press forming while they are being superposed each on the other.
-
Specification