Thermal caulking device

Patent metadata

Field	Value
Publication number	US-10369749-B2
Application number	US-201816033863-A
Country	US
Kind code	B2
Filing date	Jul 12, 2018
Priority date	Jul 21, 2017
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

The first electrode section ( 7 a ) and the second electrode section ( 7 b ) are formed such that the outer portion connected to the upper portion of the heating section ( 6 ) is thinner than the inner portion connected to the lower portion of the heating section ( 6 ). The heating section ( 6 ) and the first electrode section ( 7 a ) are interconnected by an R-shaped first connecting portion ( 21 ). The inner circumferential sloping surface of the heating section ( 6 ) and the second electrode section ( 7 b ) are interconnected by an R-shaped second connecting portion ( 22 ). The first and second connecting portions ( 21 )( 22 ) are formed such that R becomes larger from the upper end to the lower end, where the upper portion is thin and the lower portion is thick. The thickness of an intermediate portion ( 6 b ) is smaller than the thicknesses of the first and second connecting portions ( 21 )( 22 ).

First claim

What is claimed is:

1. The A thermal caulking device which joins a first member to a second member by melting a boss of the second member being inserted into a through-hole formed in the first member and projecting inwardly from an inner circumferential surface of the first member, the first member having a cylindrical shape and a width gradually increasing from a bottom surface of the first member to an upper surface of the first member, the thermal caulking device comprising:
a heat tip having
a main body section whose outer circumferential surface is formed to extend along the inner circumferential surface of the first member and
two plate-like terminal sections extending radially from the main body section and connected to an inner circumferential surface of the main body section; and

a power supply unit arranged above the heat tip and configured to supply electricity to the main body section via the terminal sections,
wherein:
at least either of the main body section and the terminal sections has a non-uniform thickness in a predetermined direction, and
a thickness of a connecting portion interconnecting the main body section and each of the terminal sections on a narrow side which is a lower end portion of the main body section is larger than a thickness of a connecting portion interconnecting the main body section and each of the terminal sections on a wide side which is an upper end portion of the main body section.

2. A thermal caulking device which joins a first member to a second member by melting a boss of the second member being inserted into a through-hole formed in the first member and projecting inwardly from an inner circumferential surface of the first member, the first member having a cylindrical shape and a width gradually increasing from a bottom surface of the first member to an upper surface of the first member, the thermal caulking device comprising:
a heat tip having
a main body section whose outer circumferential surface is formed to extend along the inner circumferential surface of the first member and
two plate-like terminal sections extending radially from the main body section and connected to an inner circumferential surface of the main body section; and

a power supply unit arranged above the heat tip and configured to supply electricity to the main body section via the terminal sections,
wherein:
at least either of the main body section and the terminal sections has a non-uniform thickness in a predetermined direction, and
a thickness of the main body section of a connecting portion side connected to each of the terminal sections is larger than a thickness of a remaining portion thereof except for the connecting portion side connected to each of the terminal sections.

3. A thermal caulking device which joins a first member to a second member by melting a boss of the second member being inserted into a through-hole formed in the first member and projecting inwardly from an inner circumferential surface of the first member, the first member having a cylindrical shape and a width gradually increasing from a bottom surface of the first member to an upper surface of the first member, the thermal caulking device comprising:
a heat tip having
a main body section whose outer circumferential surface is formed to extend along the inner circumferential surface of the first member and
two plate-like terminal sections extending radially from the main body section and connected to an inner circumferential surface of the main body section; and

a power supply unit arranged above the heat tip and configured to supply electricity to the main body section via the terminal sections,
wherein:
at least either of the main body section and the terminal sections has a non-uniform thickness in a predetermined direction, and
a thickness of an outer portion of each of the terminal sections where each terminal section is connected to a wide side of the main body section, is smaller than a thickness of an inner portion of each of the terminal sections where each terminal section is connected to a narrow side of the main body section.

Assignees

• Honda Motor Co Ltd

Inventors

• Tsurugai Yoshinori
• Ishikawa Hiroshi
• Tajiri Yuichi
• Akahori Shigeto
• OHTSU Naohiro
• Shiozaki Satoshi

Classifications

• B29C66/301

  Three-dimensional joints, i.e. the joined area being substantially non-flat (B29C66/5223, B29C66/5224, B29C66/5225 take precedence) · CPC title

• B29C65/606

  the rivets being integral with one of the parts to be joined, i.e. staking · CPC title

• B29L2031/748

  Machines or parts thereof not otherwise provided for (conveyor belts B29L2031/7092; driving belts B29L2031/7094; bearings B29L2031/04) · CPC title

• B29C66/81425

  being stepped, e.g. comprising a shoulder · CPC title

• B29C65/72

  by combined operations {or combined techniques}, e.g. welding and stitching · CPC title