Note: Descriptions are shown in the official language in which they were submitted.
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WELTED SHOE
FIELD OF THE INVENTION
This invention relates to a welted shoe, more
particularly to a welted shoe with a simplified and
waterproof structure.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of the present invention
will become apparent in thefollowing detailed description
of the preferred embodiments of the invention, with
reference to the accompanying drawings, in which:
Fig. 1 is a perspective view of a conventional welted
shoe;
Fig. 2 is an enlarged sectional view taken along line
2-2 of Fig. l;
Fig. 3 is a cross-sectional view of a first preferred
embodiment of a welted shoe according to this invention;
Fig. 4 is a fragmentary perspective view of a welt member
of the first preferred embodiment;
Fig. 5 is a cross-sectional view of a second preferred
embodiment according to this invention;
Fig. 6 is a fragmentary perspective view of a welt member
of the second preferred embodiment;
Fig. 7 is a cross-sectional view of a third preferred
embodiment according to this invention; and
Fig. 8 is a partly sectional schematic view of a fourth
preferred embodiment according to this invention.
BACRGRO'UND OF THE INVENTION
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Referring to Figs. 1 and 2, a conventional welted shoe
disclosed in U. S . Patent No. 6, 192, 605, is shown to include
an upper 1 which is shaped over a last to impart a curve
shape and which has a lower peripheral edge portion 2 that
is bent underneath an insole 3 and that is joined thereto,
and a molded midsole 4 which extends around the periphery
of the upper 1 and which has a welt 5 and a midsole flange
6 integral with each other. The upper 1 and the insole 3
located therein are placed on the midsole 4 within the welt
5 so that the welt 5 engages the upper 1 around its periphery,
and are joined together in a sub-assembly by stitching a
plurality of stitches 7 through these components. The
sub-assembly is placed on top of an outsole 8 having an
outsole flange 9 which extends around the periphery of the
upper 1. The outsole 8 is connected to the sub-assembly
by stitching a plurality of stitches 10 through the flanges
6, 9.
By virtue of the welt 5 which is not separately attached
to any other shoe part, it is convenient to stitch the insole
3, the upper 1 and the midsole 4 together. However, the
shoe does not have a good waterproofing effect because water
can penetrate through a clearance between the welt 5 and
the upper 1, along the stitch seam 7, and into the interior
of the shoe.
svr~Y of THE =HVSNr=oN
The object of the present invention is to provide a
welted shoe which is simple to manufacture and which has
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a good waterproofing effect.
According to this invention, the welted shoe includes
an upper adapted to be lasted to form a surrounding wall
with a profile and a lower peripheral edge portion. The
surrounding wall surrounds a centerline and extends
downwardly to terminate. at a lower periphery. The lower
peripheral edge portion extends from the lower periphery
towards and in a plane normal to the centerline. An insole
has a central portion, and a peripheral portion which
surrounds the central portion and which is superimposed
on the lower peripheral edge portion when the insole is
engaged with the upper. A welt member is molded from a
material more rigid than that of the upper, and includes
a surrounding seat and a surrounding prop wall. The
surrounding seat extends towards the centerline to
terminate at an inner peripheral edge, and is disposed to
underlie thelower peripheraledge portion.The surrounding
seat, the lower peripheral edge portion and the peripheral
portion of the insole together form a sandwiched structure .
The surrounding prop wall extends uprightly from the
surrounding seat and distal from the inner peripheral edge,
is configured to abut against and wrap around the lower
periphery so as to help keep the profile, and terminates
at a surrounding upper edge. A plurality of fastening
members are disposed to fasten the sandwiched structure
along lines which are parallel to the centerline so as to
form a sub-assembly. An outsole is molded with the
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sub-assembly to form an outsole body and a surrounding seal
wall. The outsole body underlies the surrounding seat and
the centralportion, extendsinlongitudinaland transverse
directions that are transverse to the centerline and
S outboard to the surrounding seat, and terminates at a
surrounding outer peripheral edge. The surrounding seal
wall extends uprightly from the surrounding outer
peripheral edge to surround the surrounding prop wall and
beyond the surrounding upper edge, and sealingly abuts
against the surrounding wall.
DETAILED DESCRIPTION OF THE PREFERRED ~ODI1~NTS
Before the present invention is described in greater
detail, it should be noted that same reference numerals
have been used to denote like elements throughout the
specification.
Referring to Fig. 3, the preferred embodiment of the
welted shoe according to the present invention is shown to
comprise an upper 30, an insole 20 mounted within the upper
30, a welt member 40, and an outsole 50.
The upper 30 is adapted to be lasted to form a surrounding
wall 33 with a profile, and a lower peripheral edge portion
32. The surrounding wall 33 surrounds a centerline and
extends downwardly to terminate at a lower periphery 34.
The lower peripheral edge portion 32 extends from the lower
periphery 34 towards and in a plane normal to the
centerline.
The insole 20 has a central portion 21, and a peripheral
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portion 22 which surrounds the central portion 21 and which
is superimposed on the lower peripheral edge portion 32
of the upper 30 when the insole 20 is engaged with the upper
30 by adhesives.
5 With reference to Fig. 4, the welt member 40 is molded
from a material more rigid than that of the upper 30, such
as rigid PVC material, and includes a surrounding seat 41
which extends towards the centerline, which terminates at
an inner peripheral edge 411, and which has a wall surface
42 that is disposed to underlie the lower peripheral edge
portion 32 of the upper 30. Thus, the surrounding seat 41,
the lower peripheral edge portion 32 of the upper 30, and
the peripheral portion 22 of the insole 20 together form
a sandwiched structure . A surrounding prop wall 43 extends
uprightly from the surrounding seat 41 and distal from the
inner peripheral edge 411, is configured to abut against
and wrap around the lower periphery 34 so as to help keep
the profile of the upper 30, and terminates at a surrounding
upper edge 432 . An outer portion 431 extends outwardly from
the surrounding prop wall 43 and distal to the inner
peripheral edge 411. A plurality of fastening members, such
as stitches 44, extend through the peripheral portion 22
of the insole 20, the lower peripheral portion 32 of the
upper 30, and the surrounding seat 41 of the welt member
40 to fasten the sandwiched structure along a line which
is parallel to the centerline so as to form a sub-assembly.
The out sole 50 is formed from a molding material which
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is less rigid than that of the welt member 40, and is molded
with the sub-assembly to form an outsole body 52 and a
surrounding seal wall 53. The outsole body 52 underlies
the surrounding seat 41 and the central portion 21, extends
in longitudinal and transverse directions that are
transverse to the centerline and outboard to the
surrounding seat 41, and terminates at a surrounding outer
peripheral edge 51. The surrounding seal wall 53 extends
uprightly from the surrounding outer peripheral edge 51
to surround the surrounding prop wall 43 and beyond the
surrounding upper edge 432, and sealingly abuts against
the surrounding wa11~33 of the upper 30. In other words,
the sub-assembly is disposed in a mold (not shown) for
injection molding of the out sole 50 such that the outsole
50 is formed immediately below the sub-assembly, and such
that the molding material penetrates into the sub-assembly
to fill clearances present among these components of the
sandwiched structure and to embed the welt member 40 in
the surrounding seal wall 53. As such, water can be
prevented from entering into the welted shoe via the upper
and the welt member 40.
As illustrated, when the shoe according to this
invention is subjected to a force (F) , such as that shown
in Fig. 3, the welt member 40 can prevent deformation of
25 the profile of the upper 30. In addition, the surrounding
seal wall 53 can protect the surrounding wall 33 of the
upper 30 against wearing.
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Figs . 5 and 6 illustrate the second preferred embodiment
of this invention. As shown, a welt member 80 further
includes a perforated portion 84 which extends in the
longitudinal and transverse directions to contact an inner
peripheral edge 811 of a surrounding seat 81 . The perforated
portion 84 is disposed to underlie the central portion 21
of the insole 20, and is formed with a plurality of
penetrating holes841extending therethroughin a direction
parallel to the centerline such that when an outsole 90
is molded with the sub-assembly, the molding material,
which forms an outsole body 91, flows into the penetrating
holes 841.
With reference to Fig. 7, the third preferred embodiment
of this invention is similar to the first preferred
embodiment in construction, except that the fastening
members are a plurality of rivets 140 which pass through
the sandwiched structure of the peripheral portion 22 of
the insole 20, the lower peripheral portion 32 of the upper
30, and the surrounding seat 41 of the welt member 40.
Referring to Fig. 8, the fourth preferred embodiment
of this invention is shown to be a safety boot, in which
an upper includes a toe cap 180 with outer and inner surfaces
181,182 which are opposite to each other and which are
distal from and proximate to the centerline, respectively.
A lining layer 160 is disposed to be spaced apart from the
inner surface 182 of the toe cap 180 by an accommodation
space. A shield member 170, which is made of a steel material,
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is disposed in the accommodation space, and extends to be
disposed on the lower peripheral portion 182 of the upper
at the toe cap 180. A plurality of rivets 210 pass through
the shield member 170 and the lining layer 160 to fasten
S the same to the sandwiched structure of an insole 150, the
upper, and a welt member 190.
While the present invention has been described in
connection with what is considered the most practical and
preferred embodiments,itis understoodthatthisinvention
is not limited to the disclosed embodiments but is intended
to cover various arrangements included within the spirit
and scope of the broadest interpretations and equivalent
arrangements.
