US 4,876,778 AGranted

Method of manufacturing a motorcycle radiator

AssigneeToyo Radiator Co., Ltd.

InventorsHisao Hagihara, Takayuki Banno, Shigenori Miya, Norio Tanaka

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method of manufacturing a motorcycle radiator comprising the steps of: (1) arranging between a pair of horizontally arranged water tanks or headers, a straight radiator core comprising in combination: a plurality of corrugated sheets spaced alternately with a plurality of flattened tubes; the flattened tubes; and elongated reinforcing plates, each of said reinforcing plates being provided with a plurality of slits extending from opposite edge portions in width directions of the reinforcing plates, the slits on one of the opposite longitudinal edge portions being disposed in a row and at a predetermined pitch, and the slits on the other of the opposite longitudinal edge portions being disposed in another row and at the predetermined pitch at respective positions halfway between positions of adjacent ones of the slits on the one of the edge portions with respect to a direction parallel to the longitudinal axis; (11) assembling and brazing these main components to produce a straight radiator which establishes the integrity in its construction; and (111) bending the straight radiator in a direction perpendicular to a longitudinal direction of the flattened tubes so as to produce an arc-shaped radiator.

Claims12

Dependent claims

A method of manufacturing a motorcycle radiator comprising the steps of:

(i) preparing, (a) a straight radiator core constructed of a plurality of corrugated sheets spaced alternately with a plurality of flattened tubes, said corrugated sheets constituting air fins for heat-exchange use, and said flattened tubes constituting water tubes through which cooling water passes, (b) a pair of elongated water tanks having a plurality of holes and disposed in positions horizontally adjacent to opposite end openings of said flattened tubes so as to communicate with said flattened tubes through said holes and said openings, and (c) a pair of metallic reinforcing plates having an elongated straight shape, between which said straight radiator core is sandwiched, each of said reinforcing plates being provided with a plurality of slits formed at opposite longitudinal edge portions of each of said plates, each of said slits extending in a direction perpendicular to a longitudinal axis of each of said reinforcing plates, said slits on one of said opposite longitudinal edge portions being disposed in a row and at a predetermined pitch, and said slits on the other of said opposite longitudinal edge portions being disposed in another row and at said predetermined pitch at respective positions halfway between positions of adjacent ones of said slits on said one of said edge portions with respect to a direction parallel to said longitudinal axis;
(ii) brazing, joints between said corrugated sheets and said flattened tubes, and joints between said corrugated sheets and said reinforcing plates, so that these components are fixedly assembled to form a straight radiator assembly whereby said opposite end openings of said flattened tubes join with said water tanks in a watertight manner;
and
(iii) bending said straight radiator assembly by a predetermined amount in a plane parallel to said longitudinal axis of said reinforcing plates.

1 more element

A method of manufacturing a motorcycle radiator comprising the steps of:

(i) preparing, (a) a straight radiator core constructed of a plurality of corrugated sheets spaced alternately with a plurality of flattened tubes, said corrugated sheets constituting air fins for heat-exchange use, and said flattened tubes constituting water tubes through which cooling water passes, (b) a pair of elongated headers having a plurality of holes and disposed in positions horizontally adjacent to opposite end openings of said flattened tubes so as to communicate with said flattened tubes through said holes and said openings, and (c) a pair of metallic reinforcing plates having an elongated straight shape, between which said straight radiator core is sandwiched, each of said reinforcing plates being provided with a plurality of slits formed at opposite longitudinal edge portions of each of said plates, each of said slits extending in a direction perpendicular to a longitudinal axis of each of said reinforcing plates, said slits on one of said opposite longitudinal edge portions being disposed in a row and at a predetermined pitch, and said slits on the other of said opposite longitudinal edge portions being disposed in another row and at said predetermined pitch at respective positions halfway between positions of adjacent ones of said slits on said one of said edge portions with respect to a direction parallel to said longitudinal axis;
(ii) brazing joints between said corrugated sheets and said flattened tubes, and joints between said corrugated sheets and said reinforcing plates, so that these components are fixedly assembled to form a straight radiator assembly whereby said opposite end openings of said flattened tubes join with said headers in a watertight manner;
(iii) bending said straight radiator assembly by a predetermined amount in a plane parallel to said longitudinal axis of said reinforcing plates;
and
(iv) each of said headers are connected with a water tank in a watertight manner so as to communicate therewith.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/168,769Filed 15 Mar 1988
Priority: JP 62-47883[U]30 Mar 1987
Granted: 31 Oct 1989
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

F28D 1/05366
The conduits having a non-circular cross-section: assemblies of conduits connected to common headers, e.g. core type radiators
B21D 53/085
Of both metal tubes and sheet metal: with fins places on zig-zag tubes or parallel tubes
F28D 1/0471
The conduits being bent, e.g. in a serpentine or zig-zag: the conduits having a non-circular cross-section
F28D 1/05383
Assemblies of conduits connected to common headers, e.g. core type radiators: with multiple rows of conduits or with multi-channel conduits