TW201607448A - Shoe upper - Google Patents

Abstract

On a shoe upper made from a knitted fabric, a bag portion knitted to form a bag shape is provided, the axial direction of which is parallel to the tongue of the shoe upper, and shoelace holes are provided in the bag portion. A filler material is filled into the bag portion, reinforcing the knitted fabric of the bag portion. Thus, the knitted fabric around the shoelace holes can be easily reinforced.

Description

Upper

The present invention relates to an upper composed of a woven fabric, and more particularly to reinforcement of a hole for wearing a string.

In sports shoes, rubber soles, hiking boots, boots, etc., it is studied to form an upper from a woven fabric, thereby reducing the processing of cutting or sewing of the attachment of the upper of the fabric. For example, Patent Document 1 (Japanese Patent Laid-Open Publication No. 2013-220357) proposes to form a shoe upper with a woven fabric and to apply a polymer raw material to a desired portion, thereby restricting the stretchability of the knitted fabric. Further, it has been proposed to carry out reinforcement by applying a multilayer polymer coating to a portion having a hole for stringing.

Patent Document 2 (Japanese Patent Laid-Open No. 2008-266854), which is a prior patent of the applicant, proposes knitting a hollow knitted fabric, and filling a hollow portion with a cushioning material, a heat insulating material, a heat insulating material, etc., thereby imparting cushioning properties to the knitted fabric. , heat preservation and other properties required.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open 2013-220357

[Patent Document 2] Japanese Patent Laid-Open No. 2008-266854

The shoelace repeatedly applies a strong force to the hole for wearing the rope on the upper, and if it is not reinforced, the braid is ruptured from the hole. On the other hand, when a plurality of polymer coatings are applied as in Patent Document 1, it is necessary to apply a coating method as required, and since the coating is performed in multiple layers, the number of steps is increased. Further, the original texture of the knitted fabric of the upper is lost.

An object of the present invention is to easily fix a knitted fabric around a hole for piercing.

The upper of the present invention is composed of a woven fabric, and is formed by seamlessly weaving into a bag shape, and a bag-like portion that is closed around and has a space inside to be disposed along a direction in which the toe and the ankle are connected, and A stringing portion provided with a hole for threading is formed in the bag portion, and a filler is filled in the bag portion to reinforce the knitted fabric around the hole for threading.

The bag-like portion is composed of a front knit fabric and a back knit fabric, and is woven into a bag-like portion, and the filler is filled into the inside of the cylinder to reinforce the knit fabric around the perforation hole. Further, it is not necessary to perform a plurality of coatings for reinforcement. Further, the pocket portion has a pair on both sides of the tongue, and the axial direction of the pocket portion is parallel to the direction of the tongue (the direction in which the toe is connected to the ankle).

Preferably, the filler material comprises a hot melt or thermosetting synthetic resin which is fused to the braid of the bag portion. The synthetic resin in the filler is fused to the woven fabric to reinforce the woven fabric around the hole for the stringing, and a structure in which the synthetic resin is fused in the pocket portion is formed. The structure also supports the shoelace to reinforce the weave around the hole for the string. By selecting the heating temperature, the type, and the like of the synthetic resin, the bag-like portion can be hardened into a plate shape or a film shape, and the bulging portion of the bag-like portion can be made into a foamy shape (buffered shape) in a bag-like portion. The degree of swelling and elasticity of the bag portion is controlled between the bulging state and the state of the elastic residue. Further, when the material of the synthetic resin and the heating temperature are adjusted, the original texture of the knitted fabric can be maintained so that the synthetic resin does not leaching to the surface of the bag portion.

The filler containing the hot-melt synthetic resin or the thermosetting synthetic resin is preferably filled in a filament form or in a fibrous form, or may be filled in a granular form or in a powder form. Although it can be filled in a liquid state, there is a possibility that the filler material is leached to the surface of the woven fabric to impair the texture of the woven fabric. In either case, it is preferred to fill the filler material by a gas stream.

The pocket portion has a length of, for example, about several cm, and it is not easy to uniformly fill the filler material. Whether the filling uniformity affects whether the bag portion uniformly bulges to have a uniform thickness, or whether the bag portion has a uniform hardness. Therefore, if the bag-shaped portion is divided into a plurality of blocks and the filling is performed for each of the blocks, the range of filling in one filling is narrowed, so that uniform filling becomes easy. In order to provide a block, it is preferable to cross the knitting yarn of the knitted fabric of the front and back sides to close the cylinder, or to bond the front and back knitted fabrics to each other by pleating or the like. Further, it is also possible to uniformly fill using a filling machine having a plurality of injection nozzles.

Further, it is preferable that the injection port for injecting the filling material is provided in the bag portion. The injection inlet is provided with a woven structure having a hole such as a mesh structure in a part of the bag-shaped portion, and the hole is set as an injection port. If so, the nozzle for filling can be inserted into the pocket portion without damaging the braid. However, when the gauge of the braid is thick and the size of the loop is sufficiently larger than the diameter of the nozzle, the nozzle can be directly inserted into the loop without the injection port. Furthermore, the nozzle is straight It may be thinner in the case of injecting fibers, but becomes thicker in the case of injecting particles or the like.

Preferably, the pocket portion further has a collar around the ankle. The upper has a collar and a stringing portion filled with a filling material, and can be easily knitted by a flat knitting machine or the like.

Further preferably, the collar is filled with an elastic filler, and the stringing portion is filled with a filler containing a hot-melt synthetic resin or a thermo-cured synthetic resin. In the upper, the collar has elasticity, and the stringing portion has strength to support the lace and has durability.

It is particularly preferable that the bag-shaped portion further includes a bag-shaped elongation preventing portion that extends from the stringing portion toward both side surfaces of the upper, and the elongation preventing portion is filled with a synthetic resin containing hot-melt synthetic resin or heat-cured synthetic resin. Filler. In the upper, the elongation preventing portion can be used to prevent deformation of the stringing portion due to stretching of the shoelace.

2, 30‧‧ ‧ upper

4‧‧‧Shoe back

5‧‧‧Insole

6‧‧‧Shoe tongue

8‧‧‧ bag part

10‧‧‧ hole

12‧‧‧lace

14‧‧‧ front weave

15‧‧‧Back knit

16‧‧‧Buildings

20‧‧‧ Division

21‧‧‧ Block

22‧‧‧Injection

32~34‧‧‧Area

35‧‧‧Sole collar

36‧‧‧Drawing the rope

37‧‧‧Elongation Prevention Department

64‧‧‧Knitting yarn

68‧‧‧Double circle

69‧‧‧cross stitch

80‧‧‧Filling machine

82‧‧‧Nozzles

84‧‧‧ air tube

86‧‧‧Filling Material Supply Department

90‧‧‧ vamp

92‧‧‧Shoe back

94‧‧ ‧ wearing a rope

L1, L2‧‧‧ needles

L3‧‧‧ line

Figure 1 is a top plan view of an upper of the embodiment.

Fig. 2 is a cross-sectional view in the short side direction of a bag-like portion having a hole for threading.

Figure 3 is a top plan view of the upper of the preferred embodiment.

Fig. 4 is a view showing the configuration of the loop of the bag portion in the preferred embodiment.

Fig. 5 is a view showing a manufacturing step of a bag-shaped portion having a hole for threading.

Fig. 6 is a knitting step diagram of a hole for wearing a string.

Fig. 7 is a view showing a block of a bag portion and a mesh for injection.

Fig. 8 is a view showing a filling machine for filling a filling material into a bag portion.

Figure 9 is a plan view of the main part of the upper.

Hereinafter, preferred embodiments for carrying out the invention will be described.

[Examples]

Fig. 1 shows an upper of an embodiment, and if a sole (not shown) is attached, it becomes a shoe. 4 is the instep, 5 is the inner sole, and the inner sole is not provided. 5. 6 is the tongue, 8 and 8 are the pocket parts on both sides of the tongue 6, and are the front knitted fabric and the back knitted fabric. The bag-like braid is formed and has a plurality of holes 10 for the shoelace 12 to pass through and support the shoelace 12. The types of shoes are sneakers, rubber soles, hiking boots, knitted boots, and the like.

Figure 2 shows the construction of the pocket portion 8, 14 being the front knit fabric that appears on the surface of the upper, and 15 being the back knit that does not appear on the surface. The pocket portion 8 is formed into a bag shape by closing the front and back knitted fabrics 14, 15. Further, the upper 2 may be provided with a front side and a back side, or the bag-shaped portion 8 may have a front side and a back side. The inside of the bag portion 8 has a structure 16 in which a hot-melt resin is fused or a thermosetting resin is cured, and the structure 16 is attached to the front and back knitted fabrics 14, 15 to reinforce the hole 10, and contacts and supports the shoe. With 12. The hot-melt resin is, for example, a filament-like resin in which a core composed of a fiber having high heat resistance is surrounded by a sheath having a softening temperature or a fiber having a lower polymerization temperature than a core and a thermoplastic or thermosetting resin. The thermosetting resin is, for example, a polyurethane resin. For example, if it is a soft polyurethane resin, the structure 16 is in the form of a foam having a high elasticity, and if it is a rigid polyurethane resin, Then, the structure 16 becomes harder, and if it is an elastomer-shaped polyurethane resin, the bulging of the structure 16 disappears and it is in a state close to a film or a board. Further, a thermoplastic resin having a lower melting point than the knitting yarn of the upper 2 may be used for the structure 16, but the bag portion 8 may be softened by heating. The filling material is not limited to filamentous or fibrous, and may be in the form of granules or powders. Other fibrous materials and the like may be contained in addition to the hot-melt resin and the thermosetting resin.

3 and 4 show the upper 30 of the preferred embodiment, for example, on a flat knitting machine having at least one pair of needle beds on the front and rear sides, and two carriers are used from the heel side of the upper needle portion L1, L2, that is, the upper of the shoe upper. Weaving areas 32, 33. For example, from the line L3, the carrier is set to one, and the remaining area 34 is knitted to the toe. During this period, the needle reduction and the needle addition are performed, and the knitting is performed in accordance with the shape of the upper 30, and a knitting method which is difficult to stretch such as double-thread knitting (interlocking knitting) or double-sided knitting is used. Further, in addition to the regions 32 to 34, the tongue may be woven at the same time, or the tongue may be separately woven and joined by sewing or the like.

The collar 35, the stringing portion 36, and the elongation preventing portion 37 are in the shape of a bag, and the collar 35 and the stringing portion 36 are at the ends of the regions 32, 33. For example, the collar 35 is woven as shown in Fig. 4, but the stringing portion 36 is woven. The same is true. The bag-like collar 35 is woven by plain knitting by a double-thread knitted woven region 32. The elongation preventing portion 37 is, for example, one surface of the woven bag by the needle of the front needle bed, and the other side of the bag is woven by the needle of the back needle bed.

Fig. 5 shows a manufacturing step of the bag portion 8 and the structure 16, and the bag portion 8 is woven in the step S1. At this time, for example, the hole 10 for the stringing is provided as shown in Fig. 6. In step S2, a filler containing a hot-melt resin is injected from the injection port 22 shown in FIG. 7 using the filling machine 80 of FIG. In step S3, the hot-melt resin is fused to the braid of the bag-like portion by heat treatment, and the structure 16 is provided to reinforce the hole 10 for stringing. Further, the shoelace 12 passes through the hole 10 in advance between step S1 and step S2.

Fig. 6 shows the weaving of the hole 10 for the stringing. In 1), the front side braid 14 (dashed line) and the back side of the bag portion 8 are knitted by the knitting yarn 64, for example, by a flat knitting machine having a pair of front and rear needle beds. Fabric 15 (solid line). Mark the symbols A~H and a~h for the needles used. In 2) In the needles C, c, F, and f around the hole 10, for example, the yarn loops of the needles d and e of the front knitting fabric are respectively superposed on the stitches of the needles C and F of the back knitted fabric, and the back knitted fabric is The stitches of the needles D and E are respectively superposed on the stitches of the needles c and f of the front knitted fabric, and four double loops 68 are formed, whereby both sides of the hole 10 are blocked by the knitting yarn 64. In 3), the needles D, d, E, and e in the hole 10 form four cross stitches 69 so that the intersecting lines intersect in an X shape, and in 4), the cross stitch 69 is usually formed. The knitting of the holes 10 is completed by the loops. Furthermore, the knitting method of the hole 10 is arbitrary.

Fig. 7 shows the configuration of the pocket portion 8, and the longitudinal direction of the pocket portion 8 (the axial direction of the cylinder) is parallel to the longitudinal direction of the tongue 6, for example, the pocket portion 8 is divided by the division portion 20 along the longitudinal direction. It is a plurality of blocks 21. Further, an injection port 22 such as a mesh structure is provided in each of the blocks 21. The dividing portion 20 can close the front knit fabric and the back knit fabric when the portion where the front knit fabric and the back knit fabric are closed or the portion to which the back knit fabric is closed, for example, the knitting yarn of the front knit fabric and the knit yarn of the back knit fabric are crossed. . Further, when the front woven fabric is joined to the back woven fabric by pleating or the like, the front woven fabric and the back woven fabric can be joined. The dividing portion 20 is for restricting the range in which the filling material is injected into the block 21 as long as the bag portion 8 can be divided into a range capable of restricting the range in which the filling material is injected. Further, the division portion 20 and the block 21 have an effect of suppressing excessive swelling of the bag portion 8. Further, even if a plurality of intersecting lines are arranged in a spaced fabric shape so as to connect the front surface and the back surface of the bag portion 8, the bag portion 8 can be prevented from excessively bulging. Further, if a filling machine having a plurality of nozzles is used, the filling material can be filled into the bag portion 8 uniformly and in a short time. In this case, the division unit 20 and the block 21 may not be provided. The injection port 22 composed of the hole of the mesh in the mesh structure is provided, for example, at a portion where the back surface of the bag portion 8 is not conspicuous. It is used to insert the hole of the nozzle of the filling machine. When there is a gap between the yarn loops of the pocket portion 8, the injection port 22 may not be provided, but it is preferably disposed on the back side knitted fabric or the like. position.

8 shows an example of the filling machine 80. The nozzle 82 is a nozzle, and the compressed air is supplied from the air tube 84. The filler material such as a filament, a fiber, a pellet, or a powder is supplied from the filler supply unit 86 and mixed with air. , ejected from the nozzle 82. The filler is preferably a hot-melt resin or a thermosetting resin, but may be only a thermoplastic resin, or may be a heat-fusible resin or a thermosetting resin and a fiber having heat resistance equal to or higher than that of a knitted yarn. Mixture, etc. Further, the yarn of the hot-melt resin is obtained by surrounding the core of the fiber having high heat resistance with a sheath of a fiber having a thermoplasticity and a low softening temperature. It is also possible to mix only the fibers having high heat resistance with fibers having a higher polymerization temperature or a heat-resistant temperature lower than the heat-resistant temperature of the knitting yarn of the knitted surface without setting the core and the sheath.

Fig. 9 schematically shows the main part of the upper 90 of the embodiment, 92 is the instep, 94 is the stringing portion, and the bag-like stringing portion 94 has a bulge. The inside of the bag of the stringing portion 94 is filled with a hot-melt resin or a thermosetting resin from the injection port 22 and fused or thermally hardened to reinforce the stringing portion 44. Further, the stringing portion 94 is partitioned by the block 21, and the injection port 22 is provided in each of the blocks 21, but the block 21 and the injection port 22 may not be provided.

The embodiment has the following features.

1) The bag portion 8 is provided, and the structure 16 is provided to reinforce the hole 10 for the string. It is not necessary to apply a plurality of polymer coatings or the like, and coating is not performed using different kinds of materials, and the filling material is not leached from the bag portion 8, so that the original texture of the woven fabric can be maintained.

2) The bag portion 8 has thickness and elasticity in addition to strength, and has a good touch.

3) The structure 16 composed of the filler of the thermosetting resin is not softened by insolation or the like.

4) If the bag portion 8 is divided into a plurality of blocks 21, the filling material can be easily and uniformly filling.

5) When the injection port 22 such as the mesh structure is provided, the nozzle 82 can be inserted without damaging the braid of the bag portion 8.

6) The upper having the collar, the stringing portion, and the elongation preventing portion can be easily knitted.

7) Elasticity is imparted to the collar, and strength is applied to the stringing portion and the elongation preventing portion, thereby preventing cracking or deformation due to repeated pulling by the shoelace.

2‧‧‧Shoes

4‧‧‧Shoe back

5‧‧‧Insole

6‧‧‧Shoe tongue

8‧‧‧ bag part

10‧‧‧ hole

12‧‧‧lace

Claims (7)

An upper which is composed of a woven fabric and is reinforced by a hole for wearing a string, characterized in that a bag-like portion which is woven into a bag shape seamlessly, is closed around, and has a space inside is attached along The connecting toe is extended in the direction of the ankle, and the stringing portion in which the hole for the stringing is provided is formed in the bag portion, and the filling portion is filled in the bag portion. The upper of claim 1, wherein the filling material comprises a hot-melt or thermosetting synthetic resin fused to the bag-shaped portion in the bag-like portion. The upper of claim 1 or 2, wherein the pocket portion is divided into a plurality of blocks. The upper of any one of claims 1 to 3, wherein an injection port for injecting a filling material is provided in the bag-shaped portion. The upper of any one of claims 1 to 4, wherein the above-mentioned pocket portion further has a collar surrounding the ankle. The upper of the fifth aspect of the patent application, wherein the collar is filled with an elastic filling material, and the wearing portion is filled with a filling material comprising a hot-melt synthetic resin or a thermo-hardened synthetic resin. The upper of the sixth aspect of the invention, wherein the bag-shaped portion further includes a bag-shaped elongation preventing portion extending from the stringing portion toward both side surfaces of the upper, and the elongation preventing portion is filled with the heat-fusible portion. A synthetic resin or a filler of a thermosetting synthetic resin.