U.S. patent application number 17/256499 was filed with the patent office on 2021-09-09 for joining structure and method for manufacturing same.
This patent application is currently assigned to Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.). The applicant listed for this patent is Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.). Invention is credited to Liang CHEN, Masao HADANO, Takayuki KIMURA, Dongyong SHI, Reiichi SUZUKI, Kenichi WATANABE, Kazuya YASUI.
Application Number | 20210276126 17/256499 |
Document ID | / |
Family ID | 1000005648538 |
Filed Date | 2021-09-09 |
United States Patent
Application |
20210276126 |
Kind Code |
A1 |
CHEN; Liang ; et
al. |
September 9, 2021 |
JOINING STRUCTURE AND METHOD FOR MANUFACTURING SAME
Abstract
A joint structure is formed by joining a first plate-shaped
member made of steel and a second plate-shaped member made of steel
that is overlapped on the first plate-shaped member and that is
formed in a long shape. A surface of the first plate-shaped member
and both edge portions of the second plate-shaped member along a
longitudinal direction are joined by a weld metal.
Inventors: |
CHEN; Liang; (Kanagawa,
JP) ; WATANABE; Kenichi; (Hyogo, JP) ; YASUI;
Kazuya; (Hyogo, JP) ; SHI; Dongyong; (Hyogo,
JP) ; HADANO; Masao; (Kanagawa, JP) ; KIMURA;
Takayuki; (Hyogo, JP) ; SUZUKI; Reiichi;
(Kanagawa, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) |
Kobe-shi |
|
JP |
|
|
Assignee: |
Kabushiki Kaisha Kobe Seiko Sho
(Kobe Steel, Ltd.)
Kobe-shi
JP
|
Family ID: |
1000005648538 |
Appl. No.: |
17/256499 |
Filed: |
May 31, 2019 |
PCT Filed: |
May 31, 2019 |
PCT NO: |
PCT/JP2019/021881 |
371 Date: |
December 28, 2020 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B62D 27/023 20130101;
B23K 26/244 20151001; B23K 26/348 20151001; B23K 2101/006 20180801;
F16B 5/08 20130101 |
International
Class: |
B23K 26/244 20060101
B23K026/244; B23K 26/348 20060101 B23K026/348 |
Foreign Application Data
Date |
Code |
Application Number |
Jun 29, 2018 |
JP |
2018-124515 |
Claims
1. A joint structure formed by joining a first plate-shaped member
made of steel and a second plate-shaped member made of steel that
is overlapped on the first plate-shaped member and that is formed
in a long shape, wherein a surface of the first plate-shaped member
and both edge portions of the second plate-shaped member along a
longitudinal direction are joined by a weld metal.
2. The joint structure according to claim 1, wherein a bent portion
is formed on an overlapping surface between the first plate-shaped
member and the second plate-shaped member.
3. The joint structure according to claim 1, wherein the first
plate-shaped member and the second plate-shaped member are further
joined to each other in an overlapping surface between the first
plate-shaped member and the second plate-shaped member.
4. The joint structure according to claim 1, wherein at least one
of the first plate-shaped member and the second plate-shaped member
is a steel material for hot stamping.
5. The joint structure according to claim 1, which is a structural
member for an automobile.
6. A method for manufacturing a joint structure formed by joining a
first plate-shaped member made of steel and a second plate-shaped
member made of steel that is overlapped on the first plate-shaped
member and that is formed in a long shape, the method comprising:
overlapping the first plate-shaped member and the second
plate-shaped member; and joining each of both edge portions of the
second plate-shaped member along a longitudinal direction to the
first plate-shaped member by an arc welding or a laser-arc hybrid
welding.
7. The method for manufacturing a joint structure according to
claim 6, wherein a bending is performed on an overlapping surface
between the first plate-shaped member and the second plate-shaped
member.
8. The method for manufacturing a joint structure according to
claim 6, further comprising joining the first plate-shaped member
and the second plate-shaped member to each other in the overlapping
surface between the first plate-shaped member and the second
plate-shaped member by any welding of a laser welding, a plasma
welding, a TIG welding, or a laser-TIG hybrid welding.
9. The method for manufacturing a joint structure according to
claim 6, wherein at least one of the first plate-shaped member and
the second plate-shaped member is a steel material for hot
stamping.
10. The method for manufacturing a joint structure according to
claim 6, wherein the joint structure is a structural member for an
automobile.
11. The joint structure according to claim 2, wherein the first
plate-shaped member and the second plate-shaped member are further
joined to each other in an overlapping surface between the first
plate-shaped member and the second plate-shaped member.
12. The joint structure according to claim 2, wherein at least one
of the first plate-shaped member and the second plate-shaped member
is a steel material for hot stamping.
13. The joint structure according to claim 2, which is a structural
member for an automobile.
14. The method for manufacturing a joint structure according to
claim 7, further comprising joining the first plate-shaped member
and the second plate-shaped member to each other in the overlapping
surface between the first plate-shaped member and the second
plate-shaped member by any welding of a laser welding, a plasma
welding, a TIG welding, or a laser-TIG hybrid welding.
15. The method for manufacturing a joint structure according to
claim 7, wherein at least one of the first plate-shaped member and
the second plate-shaped member is a steel material for hot
stamping.
16. The method for manufacturing a joint structure according to
claim 7, wherein the joint structure is a structural member for an
automobile.
Description
TECHNICAL FIELD
[0001] The present invention relates to a joint structure and a
method for manufacturing the same, more specifically relates to a
joint structure suitable for, for example, a structural member for
an automobile and a method for manufacturing the same.
BACKGROUND ART
[0002] In recent years, in order to enhance collision safety while
reducing weight of a vehicle body with reducing a CO.sub.2 emission
amount as an object, a method of using a high tensile steel plate
or partially reinforcing a necessary place with a reinforcing
material is known. Patent Literatures 1 and 2 disclose a joint body
manufactured by joining two metal members, that is, a first metal
member and a second metal member by laser welding. Patent
Literature 1 discloses that a welding mark of the laser welding is
a pair or plural pairs of straight lines parallel to each other.
Patent Literature 2 discloses that a welding mark of the laser
welding has a plurality of C-shaped portions arranged continuously,
and parts of the adjacent C-shaped portions overlap.
CITATION LIST
Patent Literature
[0003] Patent Literature 1: JP-A-2001-507993
[0004] Patent Literature 2: JP-A-2014-15206
SUMMARY OF INVENTION
Technical Problem
[0005] In the joint bodies disclosed in Patent Literature 1 or 2,
there is still room for improvement in joining strength between the
first metal member and the second metal member. Therefore, the
joint bodies are not suitable for processing by, for example, hot
stamping (hot press). That is, when these joint bodies are
processed by hot stamping, due to insufficient joining strength,
particularly insufficient joining strength of a joint portion
between the first metal member and an edge portion of the second
metal member, the first metal member and the second metal member
may be partially or entirely peeled off from the edge portion.
[0006] Further, when an external force is applied to the hot
stamping component at the time of a collision accident, the first
metal member and the second metal member can be peeled off, so that
a sufficient reinforcing effect cannot be obtained. Further, since
laser processing equipment is expensive, it is a factor that
increases product cost.
[0007] The present invention has been made in view of the problems
described above, and an object thereof is to provide a joint
structure that has high joining strength and can be manufactured at
low cost, and a method for manufacturing the same.
Solution to Problem
[0008] The present invention includes a configuration of the
following (1). [0009] (1) A joint structure formed by joining a
first plate-shaped member made of steel and a second plate-shaped
member made of steel that is overlapped on the first plate-shaped
member and that is formed in a long shape,
[0010] wherein a surface of the first plate-shaped member and both
edge portions of the second plate-shaped member along a
longitudinal direction are joined by a weld metal.
[0011] A preferable embodiment of the present invention includes
configurations of the following (2) to (5). [0012] (2) The joint
structure according to (1), wherein a bent portion is formed on an
overlapping surface between the first plate-shaped member and the
second plate-shaped member. [0013] (3) The joint structure
according to (1) or (2), wherein the first plate-shaped member and
the second plate-shaped member are further joined to each other in
an overlapping surface between the first plate-shaped member and
the second plate-shaped member. [0014] (4) The joint structure
according to any one of (1) to (3), wherein at least one of the
first plate-shaped member and the second plate-shaped member is a
steel material for hot stamping. [0015] (5) The joint structure
according to any one of (1) to (4), which is a structural member
for an automobile.
[0016] The present invention includes a configuration of the
following (6). [0017] (6) A method for manufacturing a joint
structure formed by joining a first plate-shaped member made of
steel and a second plate-shaped member made of steel that is
overlapped on the first plate-shaped member and that is formed in a
long shape, the method including:
[0018] a step of overlapping the first plate-shaped member and the
second plate-shaped member; and
[0019] a welding step of joining each of both edge portions of the
second plate-shaped member along a longitudinal direction to the
first plate-shaped member by an arc welding or a laser-arc hybrid
welding.
[0020] A preferable embodiment of the present invention includes
configurations of the following (7) to (10). [0021] (7) The method
for manufacturing a joint structure according to (6), wherein a
bending is performed on an overlapping surface between the first
plate-shaped member and the second plate-shaped member. [0022] (8)
The method for manufacturing a joint structure according to (6) or
(7), further comprising joining the first plate-shaped member and
the second plate-shaped member to each other in the overlapping
surface between the first plate-shaped member and the second
plate-shaped member by any welding of a laser welding, a plasma
welding, a TIG welding, or a laser-TIG hybrid welding. [0023] (9)
The method for manufacturing a joint structure according to any one
of (6) to (8), wherein at least one of the first plate-shaped
member and the second plate-shaped member is a steel material for
hot stamping. [0024] (10) The method for manufacturing a joint
structure according to any one of (6) to (9), wherein the joint
structure is a structural member for an automobile.
Advantageous Effects of Invention
[0025] According to the joint structure and the method for
manufacturing the same of the present invention, the joint
structure has high joining strength, and the joint structure can be
manufactured at low cost.
BRIEF DESCRIPTION OF DRAWINGS
[0026] FIG. 1 is a perspective view of a joint structure according
to an embodiment of the present invention.
[0027] FIG. 2A is a perspective view of a modification of the joint
structure according to the embodiment of the present invention.
[0028] FIG. 2B is a cross-sectional view taken along a line A-A of
FIG. 2A.
[0029] FIG. 3 is a perspective view of the joint structure bent
along a line B-B of FIG. 2A.
[0030] FIG. 4 is a cross-sectional view of another modification of
the joint structure according to the embodiment of the present
invention.
[0031] FIG. 5 is a perspective view showing an example of a B
pillar manufactured by hot-stamping the joint structure according
to the embodiment of the present invention.
[0032] FIG. 6 is a perspective view showing another example of a B
pillar manufactured by hot stamping the joint structure according
to the embodiment of the present invention.
DESCRIPTION OF EMBODIMENTS
[0033] Embodiments of a joint structure according to the present
invention is described in detail based on the drawings.
[0034] FIG. 1 is a perspective view of a joint structure
manufactured by a method for manufacturing the joint structure
according to the present embodiment. As shown in FIG. 1, the joint
structure 10 includes a first plate-shaped member 11 made of steel
and a second plate-shaped member 12 made of steel as a reinforcing
material, which is formed into a long shape narrower than the first
plate-shaped member 11.
[0035] The second plate-shaped member 12 is overlapped on a surface
11a of the first plate-shaped member 11. Both edge portions 12a
along a longitudinal direction (X direction in the drawing) of the
second plate-shaped member 12 and the surface 11a of the first
plate-shaped member 11 are joined by a weld metal (bead) 13 formed
by an arc welding or a laser-arc hybrid welding. The weld metal
(bead) 13 may be formed continuously along both the edge portions
12a or may be formed intermittently. However, as described later,
in the case where bending is performed along an imaginary line B
(see FIG. 2A) set on an overlapping surface 14, the weld metal
(bead) 13 is preferably formed continuously in order to correspond
to a stress generated at the time of bending.
[0036] A material of the first plate-shaped member 11 and the
second plate-shaped member 12, which are made of steel, is not
particularly limited as long as it is pure iron and iron alloy, and
examples thereof include mild steel, carbon steel, and stainless
steel.
[0037] The first plate-shaped member 11 and the second plate-shaped
member 12 can also be subjected to surface treatment for forming a
coating such as an electrically low element or work piece, an
insulating substance, and a passivation film in order to preventing
rust, and the like. Examples thereof include zinc plating, chromium
plating, nickel plating, aluminum plating, tin plating, resin
coating, and ceramic coating.
[0038] Both the edge portions 12a of the second plate-shaped member
12 and the surface 11a of the first plate-shaped member 11 are
joined with a filler metal (welding wire) by an arc welding or a
laser-arc hybrid welding. Therefore, both the edge portions 12a of
the second plate-shaped member 12 can be joined in a wide area, and
joining strength is improved as compared with joining by a spot
welding, a laser welding, or the like. Further, by appropriately
selecting components of the filler metal, it is possible to design
joining strength at a joint portion. As for a material of the
filler metal, a welding wire or a welding rod which is generally
used is applicable as long as the weld metal 13 is a Fe-based
alloy.
[0039] In the laser-arc hybrid welding, a laser is added as a heat
source in an arc welding method as a heat source and wire supply
method. The method is advantageous in that the welding speed is
higher than that of an ordinary arc welding method.
[0040] In the embodiment shown in FIG. 1, both the edge portions
12a along the longitudinal direction of the second plate-shaped
member 12 are welded to the first plate-shaped member 11 by arc
welding or laser-arc hybrid welding, but edge portions 12b
extending in a direction (short direction) which intersect the both
edge portions 12a of the second plate-shaped member 12 may also be
welded to the first plate-shaped member 11 by an arc welding or a
laser-arc hybrid welding. In this way, by welding the second
plate-shaped member 12 to the first plate-shaped member 11 over an
entire periphery of the edge portions 12a and 12b, water or the
like penetrating into a gap between the first plate-shaped member
11 and the second plate-shaped member 12 can be prevented, and
corrosion resistance is significantly improved.
[0041] The first plate-shaped member 11 and the second plate-shaped
member 12 welded by an arc welding or a laser-arc hybrid welding
may be bent to form a formed article. Depending on a degree of
bending or strength required for the joint structure 10, in the
case where only both edge portions 12a of the second plate-shaped
member 12 are welded by an arc welding or a laser-arc hybrid
welding, the joint structure 10 may have insufficient joining
strength or bending strength. In particular, when a width of the
second plate-shaped member 12 is wide and a distance between the
two edge portions 12a is large, strength may be insufficient.
[0042] FIG. 2A is a perspective view of a joint structure 10A
according to a modification in which the front surface 11a of the
first plate-shaped member 11 and the both edge portions 12a of the
second plate-shaped member 12 are joined by an arc welding or a
laser-arc hybrid welding, and the overlapping surfaces 14 of the
first plate-shaped member 11 and the second plate-shaped member 12
are further joined by a laser welding. FIG. 2B is a cross-sectional
view taken along a line A-A of FIG. 2A.
[0043] In the joint structure 10A according to the modification, as
shown in FIG. 2A and FIG. 2B, the overlapping surfaces 14 of the
first plate-shaped member 11 and the second plate-shaped member 12,
in which both the edge portions 12a are joined to the first
plate-shaped member 11 by an arc welding or a laser-arc hybrid
welding, are joined by a laser welding by plural pairs of joint
portions 15 arranged along the longitudinal direction (X direction
in FIG. 2A) of the second plate-shaped member 12 and formed to face
to each other in a width direction of the second plate-shaped
member 12. This further improves the joining strength between the
first plate-shaped member 11 and the second plate-shaped member
12.
[0044] The joint structure 10A thus formed is bent along an
imaginary line B (see FIG. 2A) set on the overlapping surface 14,
and is processed into a formed article 20 shown in FIG. 3 by
forming a bent portion 16.
[0045] The bent portion 16 (imaginary line B) is preferably set so
as to pass substantially the center of a pair of the joint portions
15 formed to face to each other in the width direction of the
second plate-shaped member 12. Accordingly, a force acting at the
time of bending acts equally on the left and right to improve shape
accuracy of the formed article 20.
[0046] Accompanied with bending, a shearing force acts on the joint
portion between the first plate-shaped member 11 and the second
plate-shaped member 12. In the case where the first plate-shaped
member 11 and the second plate-shaped member 12 are joined only by
a spot welding or a laser welding, the joining strength of the edge
portions 12a of the second plate-shaped member 12 with the first
plate-shaped member 11 may be weak, and the second plate-shaped
member 12 may be peeled off from the edge portions 12a.
[0047] However, in the joint structure 10A of the embodiment, the
first plate-shaped member 11 and both the edge portions 12a of the
second plate-shaped member 12 are joined by an arc welding or a
laser-arc hybrid welding, and the overlapping surfaces 14 of the
first plate-shaped member 11 and the second plate-shaped member 12
are joined in a plurality of portions by a laser welding.
Therefore, the joining strength is high, and the first plate-shaped
member 11 and the second plate-shaped member 12 are prevented from
being peeled off by bending.
[0048] In the case where the joint structures 10 and 10A are
structural members for an automobile requiring high strength such
as pillars, it is preferable to use a steel material for hot
stamping as the first plate-shaped member 11 and the second
plate-shaped member 12. In the case where the joint structures 10
and 10A are made of the steel material for hot stamping, bending is
performed by hot stamping (hot working) that is processed in a
state of heating to a temperature of 800.degree. C. or higher.
Accordingly, accurate forming is possible.
[0049] FIG. 4 is a cross-sectional view of a joint structure
according to another modification in which the overlapping surfaces
14 of the first plate-shaped member 11 and the second plate-shaped
member 12, in which the edge portions 12a are joined by an arc
welding or a laser-arc hybrid welding, are joined by a plasma
welding, a TIG welding, or a laser-TIG hybrid welding.
[0050] In a joint structure 10B of the modification, the first
plate-shaped member 11 and both the edge portions 12a of the second
plate-shaped member 12 are joined with the weld metal 13 formed by
an arc welding or a laser-arc hybrid welding, and the overlapping
surfaces 14 of the first plate-shaped member 11 and the second
plate-shaped member 12 are further joined firmly in a plurality of
portions by joint portions 17 formed by a plasma welding, a TIG
welding, or a laser-TIG hybrid welding.
[0051] In this way, in the first plate-shaped member 11 and the
second plate-shaped member 12, both the edge portions 12a are
joined to the first plate-shaped member 11 by an arc welding or a
laser-arc hybrid welding, and the overlapping surfaces 14 of the
first plate-shaped member 11 and the second plate-shaped member 12
are further joined firmly in a plurality of portions by any welding
of a laser welding, a plasma welding, a TIG welding, and laser-TIG
hybrid welding, so that the first plate-shaped member 11 and the
second plate-shaped member 12 can be formed by hot stamping and are
suitably used as the structural member for an automobile.
[0052] In the laser-TIG hybrid welding, a laser is added as a heat
source in a TIG welding method as a heat source and wire supply
method. The method is advantageous in that penetration
(penetrability of two plates) is deeper and the welding speed is
higher than those of an ordinary arc welding method.
[0053] For example, FIG. 5 shows an example of a B pillar 30 (an
example of the structural member for an automobile) manufactured by
processing the joint structures 10, 10A, and 10B with hot stamping.
The B pillar 30 is formed by joining one second plate-shaped member
12 by welding to a part of the first plate-shaped member 11
required for reinforcement and then integrally forming them by hot
stamping.
[0054] The B pillar 30 shown in FIG. 6 is formed by joining two
second plate-shaped members 12 to the first plate-shaped member 11
at positions which are ridge line portions of the B pillar 30,
respectively, and bending the first plate-shaped member 11 and the
second plate-shaped members 12 by hot stamping on the overlapping
surface 14 between the first plate-shaped member 11 and the second
plate-shaped member 12.
[0055] Examples of the structural member for an automobile to which
the joint structures 10, 10A, and 10B can be applied include a side
sill, a floor cross member, a roof side rail, and a center tunnel
cover other than the B pillar 30.
[0056] The present invention is not limited to the embodiments and
modifications described above, and modifications, improvements, or
the like can be made as appropriate.
[0057] As described above, the present description discloses the
following matters. [0058] (1) A joint structure formed by joining a
first plate-shaped member made of steel and a second plate-shaped
member made of steel that is overlapped on the first plate-shaped
member and that is formed in a long shape,
[0059] wherein a surface of the first plate-shaped member and both
edge portions of the second plate-shaped member along a
longitudinal direction are joined by a weld metal.
[0060] According to the configuration, it is possible to
manufacture a joint structure having high joining strength at low
cost. [0061] (2) The joint structure according to (1), wherein a
bent portion is formed on an overlapping surface between the first
plate-shaped member and the second plate-shaped member.
[0062] According to the configuration, it is possible to
manufacture a formed article whose strength is reinforced by
bending the joint structure in which the first plate-shaped member
and the second plate-shaped member are joined by welding. [0063]
(3) The joint structure according to (1) or (2), wherein the first
plate-shaped member and the second plate-shaped member are further
joined to each other in an overlapping surface between the first
plate-shaped member and the second plate-shaped member.
[0064] According to the configuration, it is possible to more
firmly join the first plate-shaped member and the second
plate-shaped member. [0065] (4) The joint structure according to
any one of (1) to (3), wherein at least one of the first
plate-shaped member and the second plate-shaped member is a steel
material for hot stamping.
[0066] According to the configuration, it is possible to form the
joint structure with an ultra-high strength steel plate. [0067] (5)
The joint structure according to any one of (1) to (4), which is a
structural member for an automobile.
[0068] According to the configuration, it is possible to
manufacture the joint structure that can be used as a structural
member for an automobile. [0069] (6) A method for manufacturing a
joint structure formed by joining a first plate-shaped member made
of steel and a second plate-shaped member made of steel that is
overlapped on the first plate-shaped member and that is formed in a
long shape, the method including:
[0070] a step of overlapping the first plate-shaped member and the
second plate-shaped member; and
[0071] a welding step of joining each of both edge portions of the
second plate-shaped member along a longitudinal direction to the
first plate-shaped member by an arc welding or a laser-arc hybrid
welding.
[0072] According to the configuration, it is possible to
manufacture the joint structure with high joining strength at low
cost by bonding the first plate-shaped member and the second
plate-shaped member by an arc welding or a laser-arc hybrid
welding. [0073] (7) The method for manufacturing a joint structure
according to (6), wherein a bending is performed on an overlapping
surface between the first plate-shaped member and the second
plate-shaped member.
[0074] According to the configuration, it is possible to
manufacture a formed article whose strength is reinforced, by
bending the joint structure in which the first plate-shaped member
and the second plate-shaped member are joined by welding. [0075]
(8) The method for manufacturing a joint structure according to (6)
or (7), further comprising joining the first plate-shaped member
and the second plate-shaped member to each other in the overlapping
surface between the first plate-shaped member and the second
plate-shaped member by any welding of a laser welding, a plasma
welding, a TIG welding, or a laser-TIG hybrid welding.
[0076] According to the configuration, it is possible to more
firmly join the first plate-shaped member and the second
plate-shaped member. [0077] (9) The method for manufacturing a
joint structure according to any one of (6) to (8), wherein at
least one of the first plate-shaped member and the second
plate-shaped member is a steel material for hot stamping.
[0078] According to the configuration, it is possible to form the
joint structure with an ultra-high strength steel plate. [0079]
(10) The method for manufacturing a joint structure according to
any one of (6) to (9), wherein the joint structure is a structural
member for an automobile.
[0080] According to the configuration, it is possible to
manufacture the joint structure that can be used as a structural
member for an automobile.
[0081] Although the embodiments are described above with reference
to the drawings, it is needless to say that the present invention
is not limited to such examples. It will be apparent to those
skilled in the art that various changes and modifications may be
conceived within the scope of the claims. It is also understood
that various changes and modifications belong to the technical
scope of the present invention. Constituent elements in the
embodiments described above may be combined freely within a range
not departing from the spirit of the present invention.
[0082] The present application is based on Japanese Patent
Application No. 2018-124515 filed on Jun. 29, 2018, the contents of
which are incorporated herein by reference.
REFERENCE SIGNS LIST
[0083] 10, 10A, 10B joint structure [0084] 11 first plate-shaped
member (steel material for hot stamping) [0085] 11a surface [0086]
12 second plate-shaped member (steel material for hot stamping)
[0087] 12a, 12b edge portion [0088] 13 weld metal (bead) [0089] 14
overlapping surface [0090] 15 joint portion [0091] 16 bent portion
[0092] 17 joint portion [0093] 20 formed article (structural member
for automobile) [0094] 30 B pillar
* * * * *