Exhaust muffler
US-2016245146-A1 · Aug 25, 2016 · US
Muffler and its corresponding manufacturing method
US9719404B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9719404-B2 |
| Application number | US-201414782852-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 9, 2014 |
| Priority date | Apr 10, 2013 |
| Publication date | Aug 1, 2017 |
| Grant date | Aug 1, 2017 |
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- Title
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- Abstract
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Abstract
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A manufacturing method for a muffler includes: a trimming step, of cutting out a dogleg shaped muffler body member; a bending processing step of processing the muffler body member into a tube by advancing the muffler body member between an upper roller and a lower roller of a bending machine while adjusting an advancing direction with a guide and by changing a relative position of the upper roller and the lower roller; a first joining step of joining two ends of the tubularly-processed muffler body member in a long side direction; an insertion step of inserting an inner structural member into the inside of the tubularly-processed muffler body member; a second joining step of joining caps to opening portions of the tubularly-processed muffler body member; and a third joining step of joining an air intake joint and an exhaust pipe to the sealed muffler body member.
First claim
Opening claim text (preview).
What is claimed is: 1. A manufacturing method for a muffler comprising: a trimming step of cutting out a dogleg shaped muffler body member from a planar plate, the dogleg shaped muffler body member defining a first part and a second part and a bending portion between the first part and the second part, wherein a length of the bending portion of one side of the dogleg shaped muffler body member is different than a length of an opposing side of the bending portion of the dogleg muffler body member; a bending processing step of processing the muffler body member into a tube by advancing the muffler body member between an upper roller and a lower roller of a bending machine while adjusting an advancing direction with a guide and by changing a relative position of the upper roller and the lower roller, thereby producing a tubularly-processed muffler body member; a first joining step of joining two ends of the tubularly-processed muffler body member in a long side direction of the dogleg shaped muffler body member; an insertion step of inserting an inner structural member to the inside of the tubularly-processed muffler body member; a second joining step of joining caps to opening portions of the tubularly-processed muffler body member to seal the tubularly-processed muffler body member; and a third joining step of joining an air intake joint and an exhaust pipe to the sealed muffler body member. 2. The manufacturing method according to claim 1 , wherein in the first and second joining steps, a swaging process is used to join the two ends of the tubularly-processed muffler body member and join the caps to the opening portions of the tubularly-processed muffler body member.
Assignees
Inventors
Classifications
Silencing apparatus characterised by method of silencing · CPC title
Chambers with particular shapes, e.g. spherical · CPC title
Tubes having non-circular cross section · CPC title
- F01N13/1872Primary
the assembly using stamp-formed parts or otherwise deformed sheet-metal · CPC title
by mechanical joints, e.g. by deforming housing, tube, baffle plate or parts thereof · CPC title
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- What does patent US9719404B2 cover?
- A manufacturing method for a muffler includes: a trimming step, of cutting out a dogleg shaped muffler body member; a bending processing step of processing the muffler body member into a tube by advancing the muffler body member between an upper roller and a lower roller of a bending machine while adjusting an advancing direction with a guide and by changing a relative position of the upper rol…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01N13/1872. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 01 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).