JP2001008703A - Footgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce sandals and shoes which are imparted with interchangeability to upper soles and grounding soles and are made common in the grounding soles on a use side by press welding and engaging many engaging projections disposed on the rear surfaces of the upper soles to and with engaging recessed parts disposed at the front surfaces of the grounding soles and constituting the upper soles and the grounding soles in such a manner that both can be freely coupled and separated to and from each other. SOLUTION: In the case of application to the sandals, the sandals are formed of the grounding soles 1, the upper soles 2 separably coupled onto the grounding soles 1, uppers 3 of the sandals freely attachably and detachably mounted at the upper soles 2, the many engaging projections 5 disposed on the rear surfaces of the upper soles and the engaging recessed parts 6 disposed at the front surfaces of the grounding soles in correspondence to the engaging projections 5. The grounding soles 1 and the upper soles 2 are formed to about the same hardness and both thereof are integrally molded of synthetic resin materials, such as urethane, having elasticity. The uppers 3 of the sandals are held between the upper soles 2 at their both ends and the grounding soles 1 and, therefore, the thinnest possible uppers are more adequate. Since both ends of the uppers 3 are bored with plural mounting holes, the uppers are preferably made of leather in such a manner that the required strength may be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to footwear, and more particularly, to a footwear such as sandals or shoes provided on a grounding sole, with an upper sole having an upper insulated thereon. The present invention relates to footwear that can be easily combined and separated on the user side.

[0002]

2. Description of the Related Art There are many conventional sandals and shoes in which an upper sole having an upper and a grounding sole are separately formed and connected. As a general manufacturing process of such footwear, a method is employed in which an upper is attached to the upper sole, and the upper with the upper is fixedly assembled on the ground sole to finish.

[0003]

In the above-mentioned footwear such as sandals and shoes, the upper sole with the upper is fixedly assembled to the ground sole at the time of production. It is not possible to replace the upper on the user's side or to make sandals or shoes with a common ground bottom.

[0004] In addition, if the upper shell or the ground floor is damaged,
Depending on the degree of damage, the footwear itself may be discarded, resulting in a large economic loss.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the footwear according to the present invention is characterized in that in a footwear in which an upper sole having an upper is provided on a ground sole, a plurality of engaging projections are formed on the lower surface of the upper sole. And the projection is press-fitted into an engagement recess provided on the upper surface of the grounding bottom, so that the upper bottom and the grounding bottom can be freely coupled and separated.

Here, the ground sole is formed by integrally molding a known footwear with the same kind of synthetic resin material, and can be the same as a known one in terms of material and form as an upper cover. The upper bottom is required to have the same degree of hardness as the ground bottom in order to stabilize the coupling relationship with the ground bottom, and therefore, is practically molded from the same synthetic resin material as the ground bottom. In this case, it is not always necessary to form the entire upper sole into an integral body. The upper sole main body, which has an engagement projection on the lower surface and to which the instep is attached, is molded from the same synthetic resin material as the grounding bottom, and The upper base portion corresponding to the back of the above may be formed as a separate body, and both may be bonded and finished.

In the footwear of the present invention configured as described above,
Since the engagement protrusion of the upper bottom and the engagement recess of the ground bottom are crimp-engaged and the top bottom and the ground bottom are firmly connected, in normal use,
Various condition changes during walking, for example, the weight of the user is not applied during walking, or even if the bending of each part of the footwear is repeated, without being affected by such condition changes, the upper sole and The connection of the ground bottom is ensured. Therefore, it is possible to easily replace the instep cover and use the same grounding sole as a sandal or a shoe on the user side after the shoes are worn by the user, and it is possible to wear the shoes safely without any difference from the conventional shoes. Moreover, in the footwear of the present invention, since the bottom of the footwear during walking is allowed to move slightly in the plane direction elastically at the joint surface between the upper sole and the ground sole, the bottom of the footwear is of the same kind as the known footwear. It is more flexible than thicker ones, and follows the movements of the feet for better comfort.

In the footwear of the present invention, a large number of engagement projections and engagement recesses are scattered on the upper bottom surface and the ground bottom upper surface, and the number, size, arrangement, and the like depend on the type and size of the footwear. It is set appropriately as appropriate. Here, the direction of engagement between them, that is, the direction in which each part of the upper bottom and the grounding bottom comes and comes at the same interval in the original state, is aligned with the vertical line.

The crimping engagement between the engaging projection and the engaging concave portion is not structurally limited unless the upper bottom and the grounding bottom are separated unless the upper bottom and the grounding bottom are artificially separated. In order to secure the connection between the sole and the grounding sole, a number of engaging projections and engaging recesses scattered on the lower surface of the upper sole and the upper surface of the grounding sole are formed by an inner group positioned along the longitudinal center line of the shoe, Divided into outer groups located on the toe and heel located on the outside, the engagement projections and engagement recesses forming the inner group are provided in accordance with the engagement direction (vertical line), and the engagement projections forming the outer group When adopting a configuration in which the engagement recesses are provided slightly inclined inward with respect to the engagement direction, the engagement between the engagement projections forming the outer group and the engagement recesses is such that the upper bottom moves away from the grounding bottom. On the other hand, the engaging recess opening is strongly pressed inside the engaging protrusion, and the engaging protrusion is elastically deformed while the engaging recess is being deformed. Since so escape al, the extraction frictional resistance increases, increasing the engagement stability of the engagement projection and the engagement recess.

[0010] In addition, when the engagement projection and the engagement recess are formed to have a columnar cross section, and the engagement projection base is pressed to the engagement recess opening in the entire circumference in a state where both are engaged, rain can be prevented. Even if water intrudes into the joint surface between the upper bottom and the ground bottom due to wetting or the like, this water is prevented from entering the engaging recess, so that the crimping portions of the engaging protrusion and the engaging recess are wetted and crimped. Reduce frictional resistance,
The engagement stability between the engagement projection and the engagement recess is not reduced.

[0011] Further, a raised portion is provided at the center of the bottom of the engaging concave portion,
If a configuration is adopted in which the engaging projection tip is brought into contact with this to increase the pressing force against the inner wall of the engaging recess by deformation of the engaging projection tip, the engaging friction force between the engaging projection and the engaging recess increases. Also from this surface, the engagement stability between the engagement protrusion and the engagement recess is enhanced.

In the footwear according to the present invention, the upper sole and the ground sole are artificially separated from each other at a tapered toe or a heel at a joint between the upper sole and the ground sole. Create a gap by pushing in, etc., and when this gap has expanded to a certain extent, put your fingers on the top bottom and the ground bottom and pull them apart so that
The engaging projections come out of the engaging recesses one after another, and the upper bottom and the grounding bottom are separated. In addition, the rejoining of the separated upper bottom and the grounding bottom is achieved by aligning the engaging protrusions of the upper bottom with the engaging recesses of the grounding bottom, placing the foot on the upper bottom and applying weight, the engaging protrusions respectively The upper bottom and the grounding bottom are elastically press-fitted into the engagement recesses, and are joined. In this manner, the work of separating or connecting the upper bottom and the ground bottom can be easily and securely performed by the user without any skill of the user.

[0013] In particular, in the footwear of the present invention, in the sandals having a belt-like upper, a configuration is adopted in which mounting holes are provided at both ends of the upper in accordance with the engagement projections on the lower surface of the upper bottom so as to be fixed thereto. Then, the configuration of the upper can be simplified, and a plurality of uppers having different designs or the like are prepared, and a variety of sandals can be provided by appropriately replacing the uppers.

In the case of conventional sandals and shoes, since the upper sole with the upper is attached integrally to the grounding sole, the sandals can exhibit only a single function, such as sandals, and the shoes can exhibit only a single function. In the footwear of the present invention, if the same size and the same kind of footwear are used, the engaging protrusion on the upper sole and the engaging concave part on the ground sole are made common (standardized) so that the upper sole and the ground sole are compatible. In addition, the interchange of the separately produced top and ground bottoms becomes possible on the user side. For example, it is easy to combine the upper sole with a band-shaped upper cover into a sandal or the upper sole with the shoe upper combined with a common ground sole into a shoe. it can. Therefore, not only can various uses be made according to the preference of the user, but even if a part of the footwear is damaged, the footwear itself is not discarded, so that economic loss can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a sandal showing a state where an upper sole and a ground sole are separated, FIG. 2 is a perspective view of a shoe showing a state where the upper sole and the ground sole are separated, and FIG. 3 is a plan view of the ground sole. FIG. 4 shows FIG.
5 is a partial cross-sectional view showing the state of connection between the upper bottom and the ground bottom corresponding to line AA of FIG. 5, FIG. 5 is a developed view of the upper of the sandal, and FIG.

In the drawing, 1 is a grounding bottom, 2 is an upper bottom detachably connected to the grounding bottom, 3 is an upper of sandals detachably attached to the upper bottom 2, and 4 is assembled to the upper bottom 2. Reference numeral 5 denotes a number of engaging projections provided on the lower surface of the upper sole, and reference numeral 6 denotes an engaging concave portion provided on the upper surface of the ground sole in correspondence with the engaging projections 5.

The hardness of the grounding bottom 1 and the upper bottom 2 is about the same, and both are integrally formed of a synthetic resin material having elasticity, for example, urethane material.

Although the upper bottom 2 of the embodiment is an integrally molded product, the upper bottom 2 is not necessarily required to be an integral product.
The upper bottom main portion having the engaging projections 5 and the upper base portion corresponding to the sole of the foot may be formed as separate components, and may be bonded and finished later.

The uppers 3 and 4 can be made of the same material and form as those known in the art. Sandal instep 3
As shown in FIGS. 5 and 6, a plurality of mounting holes 7 are provided at both ends of the upper 3 in conformity with the engaging projections 5, and the mounting holes 7 are used for attachment to the upper bottom 2. It is detachably fixed to the projection 5. The upper 4 of the shoe is integrally attached to the upper sole 2 similarly to known shoes. The upper 3 of the sandal is preferably made as thin as possible because both ends are sandwiched between the upper bottom 2 and the ground bottom 1. Further, since a plurality of mounting holes 7 are formed at both ends of the upper 3, the upper is generally made of leather so as to obtain a required strength.

The number and size of the engagement protrusions 5 and the engagement recesses 6 and the arrangement thereof are appropriately set according to the size of the footwear. The direction of engagement between the engagement protrusion 5 and the engagement recess 6, that is, the direction in which the upper bottom and the ground bottom come and go at the same interval in the original state as shown in FIG.
It is adjusted to.

In order to secure the connection between the upper sole 2 and the ground sole 1, in the embodiment, a number of engaging projections 5 and engaging concave parts 6 scattered on the lower surface of the upper sole 2 and the upper surface of the ground sole 1 are used. Are divided into two groups, an inner group located along the center line in the longitudinal direction and an outer group located outside of the toe and the heel, and the engaging projections 5 and the engaging recesses 6 forming the inner group are The engagement projections 5 and the engagement recesses 6 which are provided in accordance with the engagement direction (vertical line a) and form an outer group have a slight angle α with respect to the engagement direction (vertical line a) as shown in FIG. In the state where the upper bottom 2 and the grounding bottom 1 are completely connected, all the engaging projections 5 and the engaging recesses 6 are stably provided so that the crimping engagement relationship is stable. I have.

Here, in view of the engagement relationship between the engagement projections 5 and the engagement recesses 6 forming the outer group, the movement for separating the upper bottom 2 and the grounding bottom 1, that is, in the engagement direction (vertical line a) In response to the movement of the upper bottom 2 and the grounding bottom 1 apart, the opening of the engaging recess 6 is strongly pressed inside the engaging protrusion 5 so that the engaging protrusion 5 is elastically deformed from the engaging recess 6. Since it comes to be pulled out, the pulling friction resistance is increased to make it difficult to pull out.

Further, the engaging projections 5 and the engaging recesses 6 are formed in a columnar cross section, and the base of the engaging projections 5 is pressed against the opening of the engaging recess 6 over the entire circumference in the engaged state. For example, water is prevented from entering the engaging recess 6 and the crimping portions of the engaging protrusion 5 and the engaging recess 6 are prevented from getting wet in the engaging recess 6 to reduce the frictional resistance of the crimping. .

As shown in FIG. 4, a protruding portion 8 is provided at the center of the bottom of the engaging concave portion 6, and when the upper bottom 2 and the grounding bottom 1 are completely connected, the protruding portion 8 The tip of the engagement protrusion 5 is deformed in such a manner that the tip of the engagement protrusion 5 is expanded around the raised portion 8, and the pressing force of the peripheral surface of the engagement protrusion 5 against the inner wall of the engagement recess 6 even inside the engagement recess 6. The engagement friction force between the engagement protrusion 5 and the engagement recess 6 is increased to make it difficult to remove.

Accordingly, when the upper protrusion 2 and the grounding bottom 1 are joined by press-fitting the engaging projections 5 and the engaging recesses 6 to each other, unless the upper bottom 2 and the grounding bottom 1 are artificially separated, the upper bottom 2 and the grounding bottom 1 are not separated. Is secured, so that the footwear can be worn without any difference from conventional footwear.

Further, in order to artificially separate the upper sole 2 and the ground sole 1 from each other, a gap is formed at the junction between the upper sole 2 and the ground sole 1 at a tapered toe or a heel. When the fingers are put on the upper bottom 2 and the grounding bottom 1 to separate them so as to widen the gap, the engaging projections 5 sequentially come out of the engaging recesses 6 and the upper bottom 2 and the grounding bottom 1 are separated. The rejoining of the separated upper sole 2 and the ground sole 1 is performed by placing the upper sole 2 on the ground sole 1 and putting a foot on the upper sole 2 to weigh the user. The upper bottom 2 and the ground bottom 1 are firmly connected by elastically press-fitting into the inside 6.

In the footwear of the present invention, the engaging projections 5 and the engaging recesses 6 are standardized (standardized) so that the upper sole 2 and the ground sole 1 are interchangeable for the same size and the same kind of footwear. I have. When the upper bottom 2 and the ground bottom 1 are made compatible in this way, the interchange of the individually produced top bottom 2 and the ground bottom 1 can be performed on the user side, for example, one common ground bottom. For one,
Sandals by combining the upper sole 2 with the belt-shaped upper cover 3 attached to it, or combining the upper sole 2 with the shoe upper 4 attached thereto to form shoes, or one upper sole with different designs etc. It can be easily used by replacing the upper cover 3. Further, even if a part of the footwear is damaged, the footwear itself is not discarded, and the economic loss is reduced.

[0029]

The present invention is embodied in the form as described above. According to the present invention, the upper bottom with the upper is mounted on the ground bottom, and the engaging projection on the upper bottom is connected to the ground bottom. The upper sole and the ground sole are not separated unless the upper sole and the ground sole are artificially separated from each other by crimping engagement with the engaging concave part of the above. It can be worn with no change. In addition, by standardizing the engagement protrusion and the engagement recess and making the upper bottom and the ground bottom compatible, it is easy to make sandals or shoes having a common ground bottom on the user side. In particular, sandals can be replaced only by the instep, and can be used in various ways according to the user's preference. Further, even if a part of the footwear is damaged, the footwear itself is not discarded, so that economic loss can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which an upper bottom and a ground bottom of a sandal to which the present invention is applied are separated.

FIG. 2 is a perspective view showing a state in which an upper sole and a ground sole of the shoe to which the present invention is applied are separated.

FIG. 3 is a plan view of a ground bottom.

FIG. 4 is a partial cross-sectional view showing a coupling state between an upper bottom and a ground bottom corresponding to line AA in FIG. 3;

FIG. 5 is an exploded view of the upper of the sandal.

FIG. 6 is a vertical cross-sectional view of an upper part of a sandal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grounding bottom 2 Upper bottom 3 Upper 4 Upper 5 Engagement projection 6 Engagement recess 7 Mounting hole 8 Ridge

[Procedure amendment]

[Submission date] March 17, 2000 (2003.
7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Footwear

[Claims]

2. The engagement projection and the engagement recess are formed in a columnar cross section, and the engagement projection base is pressed to the engagement recess opening over the entire circumference in the engaged state. Footwear.

3. A projection is provided at the center of the bottom of the engagement recess, the tip of the engagement projection is brought into contact with the projection, and the tip of the engagement projection is deformed around the projection to form a periphery of the engagement projection with respect to the inner wall of the engagement recess. The footwear according to claim 1 or 2, wherein a pressing force of the surface is increased.

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to footwear, and more particularly, to a footwear such as sandals or shoes provided on a grounding sole, with an upper sole having an upper insulated thereon. The present invention relates to footwear that can be easily combined and separated on the user side.

[0002]

2. Description of the Related Art There are many conventional sandals and shoes in which an upper sole having an upper and a grounding sole are separately formed and connected. As a general manufacturing process of such footwear, a method is employed in which an upper is attached to the upper sole, and the upper with the upper is fixedly assembled on the ground sole to finish.

[0003]

In the above-mentioned footwear such as sandals and shoes, the upper sole with the upper is fixedly assembled to the ground sole at the time of production. It is not possible to replace the upper on the user's side or to make sandals or shoes with a common ground bottom.

[0004] In addition, if the upper shell or the ground floor is damaged,
Depending on the degree of damage, the footwear itself may be discarded, resulting in a large economic loss.

[0005]

According to the present invention, there is provided a footwear having a plurality of engaging projections provided on a lower surface of an upper sole to which an upper is attached, and the projections provided on an upper surface of a grounding bottom. The upper and lower soles are scattered on the lower surface of the upper surface and the upper surface of the lower surface of the footwear in which the upper sole and the ground sole can be freely connected and separated by crimping engagement with the engaging concave portion.
A large number of engagement protrusions and engagement recesses are divided into an inner group and an outer group,
The engagement protrusions and engagement recesses of the side group are aligned in the engagement direction (vertical direction).
And the engagement protrusions and the engagement recesses of the outer group are aligned in the engagement direction.
It is characterized by being provided slightly inclined inward .

Here, the ground sole is formed by integrally molding a known footwear with the same kind of synthetic resin material, and can be the same as a known one in terms of material and form as an upper cover. Since the upper bottom is required to have the same degree of hardness as the ground bottom in order to stabilize the coupling relationship with the ground bottom, it is practically molded from the same synthetic resin material as the ground bottom. In this case, it is not always necessary to form the entire upper sole into an integral body. The upper sole main body, which has an engaging projection on the lower surface and to which the instep is attached, is molded from the same synthetic resin material as the grounding bottom, and The upper base portion corresponding to the back side of the above may be formed as a separate body, and may be bonded and finished.

Further, the number and size of a large number of engagement projections and engagement recesses are large.
The size and arrangement are appropriate for the type and size of the footwear.
And the direction of engagement between them, that is,
The direction in which each part contacts and separates at the same interval in the original state,
It is aligned with the vertical line.

In the footwear of the present invention configured as described above,
The engagement between the engagement projections and engagement recesses forming the outer group is such that the upper bottom is grounded
For the movement away from the bottom, the engagement recess is opened inside the engagement protrusion.
The mouth is strongly pressed and the engaging projections are elastically deformed.
Pulls out of the engagement recess, so that the pull-out friction
The resistance increases, and the engagement stability between the engagement protrusion and the engagement recess is improved.
Enhance.

In this manner, the engagement protrusion of the upper bottom and the engagement recess of the grounding bottom are press-fitted and the upper bottom and the grounding bottom are firmly connected, so that in normal use, various conditions change during walking,
For example, even if the weight of the user is applied or not applied during walking, and the parts of the footwear are repeatedly bent, the connection between the upper sole and the ground sole is ensured without being affected by such a change in conditions. You. Therefore, it is possible to easily replace the instep cover and use the same grounding sole as a sandal or a shoe on the user side after the shoes are worn by the user, and it is possible to wear the shoes safely without any difference from the conventional shoes. Moreover, in the footwear of the present invention, since the bottom of the footwear during walking is allowed to move slightly in the plane direction elastically at the joint surface between the upper sole and the ground sole, the bottom of the footwear is of the same kind as the known footwear. It is more flexible than thicker ones, and follows the movements of the feet for better comfort.

[0010] In addition, when the engagement projection and the engagement recess are formed to have a columnar cross section, and the engagement projection base is pressed to the engagement recess opening in the entire circumference in a state where both are engaged, rain can be prevented. Even if water intrudes into the joint surface between the upper bottom and the ground bottom due to wetting or the like, this water is prevented from entering the engaging recess, so that the crimping portions of the engaging protrusion and the engaging recess are wetted and crimped. Reduce frictional resistance,
The engagement stability between the engagement projection and the engagement recess is not reduced.

[0011] Further, a raised portion is provided at the center of the bottom of the engaging concave portion,
If a configuration is adopted in which the engaging projection tip is brought into contact with this to increase the pressing force against the inner wall of the engaging recess by deformation of the engaging projection tip, the engaging friction force between the engaging projection and the engaging recess increases. Also from this surface, the engagement stability between the engagement protrusion and the engagement recess is enhanced.

In the footwear according to the present invention, the upper sole and the ground sole are artificially separated from each other at a tapered toe or a heel at a joint between the upper sole and the ground sole. Create a gap by pushing in, etc., and when this gap has expanded to a certain extent, put your fingers on the top bottom and the ground bottom and pull them apart so that
The engaging projections come out of the engaging recesses one after another, and the upper bottom and the grounding bottom are separated. In addition, the rejoining of the separated upper bottom and the grounding bottom is achieved by aligning the engaging protrusions of the upper bottom with the engaging recesses of the grounding bottom, placing the foot on the upper bottom and applying weight, the engaging protrusions respectively The upper bottom and the grounding bottom are elastically press-fitted into the engagement recesses, and are joined. In this manner, the work of separating or connecting the upper bottom and the ground bottom can be easily and securely performed by the user without any skill of the user.

[0013] Therefore, in the sandals in which the instep has a belt shape,
By adopting a structure in which mounting holes are provided at both ends of the upper to match with the engagement projections on the lower surface of the upper bottom, the structure of the upper can be simplified and a plurality of uppers with different designs and the like can be provided. Are prepared, and by replacing these shells as appropriate, a variety of sandals can be provided.

In the case of conventional sandals and shoes, since the upper sole with the upper is attached integrally to the grounding sole, the sandals can exhibit only a single function, such as sandals, and the shoes can exhibit only a single function. In the footwear of the present invention, if the same size and the same kind of footwear are used, the engaging protrusion on the upper sole and the engaging concave part on the ground sole are made common (standardized) so that the upper sole and the ground sole are compatible. In addition, the interchange of the separately produced top and ground bottoms becomes possible on the user side. For example, it is easy to combine the upper sole with a band-shaped upper cover into a sandal or the upper sole with the shoe upper combined with a common ground sole into a shoe. it can. Therefore, not only can various uses be made according to the preference of the user, but even if a part of the footwear is damaged, the footwear itself is not discarded, so that economic loss can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a sandal showing a state where an upper sole and a ground sole are separated, FIG. 2 is a perspective view of a shoe showing a state where the upper sole and the ground sole are separated, and FIG. 3 is a plan view of the ground sole. FIG. 4 shows FIG.
5 is a partial cross-sectional view showing the state of connection between the upper bottom and the ground bottom corresponding to line AA of FIG. 5, FIG. 5 is a developed view of the upper of the sandal, and FIG.

In the drawing, 1 is a grounding bottom, 2 is an upper bottom detachably connected to the grounding bottom, 3 is an upper of sandals detachably attached to the upper bottom 2, and 4 is assembled to the upper bottom 2. Reference numeral 5 denotes a number of engaging projections provided on the lower surface of the upper sole, and reference numeral 6 denotes an engaging concave portion provided on the upper surface of the ground sole in correspondence with the engaging projections 5.

The hardness of the grounding bottom 1 and the upper bottom 2 is about the same, and both are integrally formed of a synthetic resin material having elasticity, for example, urethane material.

Although the upper bottom 2 of the embodiment is an integrally molded product, the upper bottom 2 is not necessarily required to be an integral product.
The upper bottom main portion having the engaging projections 5 and the upper base portion corresponding to the sole of the foot may be formed as separate components, and may be bonded and finished later.

The uppers 3 and 4 can be made of the same material and form as those known in the art. Sandal instep 3
As shown in FIGS. 5 and 6, a plurality of mounting holes 7 are provided at both ends of the upper 3 in conformity with the engaging projections 5, and the mounting holes 7 are used for attachment to the upper bottom 2. It is detachably fixed to the projection 5. The upper 4 of the shoe is integrally attached to the upper sole 2 similarly to known shoes. The upper 3 of the sandal is preferably made as thin as possible because both ends are sandwiched between the upper bottom 2 and the ground bottom 1. Further, since a plurality of mounting holes 7 are formed at both ends of the upper 3, the upper is generally made of leather so as to obtain a required strength.

The number and size of the engagement protrusions 5 and the engagement recesses 6 and the arrangement thereof are appropriately set according to the size of the footwear. The direction of engagement between the engagement protrusion 5 and the engagement recess 6, that is, the direction in which the upper bottom and the ground bottom come and go at the same interval in the original state as shown in FIG.
It is adjusted to.

In order to secure the connection between the upper sole 2 and the ground sole 1, in the embodiment, a number of engaging projections 5 and engaging concave parts 6 scattered on the lower surface of the upper sole 2 and the upper surface of the ground sole 1 are used. Are divided into two groups, an inner group located along the center line in the longitudinal direction and an outer group located outside of the toe and the heel, and the engaging projections 5 and the engaging recesses 6 forming the inner group are The engagement projections 5 and the engagement recesses 6 which are provided in accordance with the engagement direction (vertical line a) and form an outer group have a slight angle α with respect to the engagement direction (vertical line a) as shown in FIG. In the state where the upper bottom 2 and the grounding bottom 1 are completely connected, all the engaging projections 5 and the engaging recesses 6 are stably provided so that the crimping engagement relationship is stable. I have.

Here, considering the engagement relationship between the engagement projections 5 and the engagement recesses 6 forming the outer group, the movement for separating the upper bottom 2 and the grounding bottom 1, that is, in the engagement direction (vertical line a) In response to the movement of the upper bottom 2 and the grounding bottom 1 apart, the opening of the engaging recess 6 is strongly pressed inside the engaging protrusion 5 so that the engaging protrusion 5 is elastically deformed from the engaging recess 6. Since it comes to be pulled out, the pulling friction resistance is increased to make it difficult to pull out.

Further, the engaging projections 5 and the engaging recesses 6 are formed in a columnar cross section, and the base of the engaging projections 5 is pressed against the opening of the engaging recess 6 over the entire circumference in the engaged state. For example, water is prevented from entering the engaging recess 6 and the crimping portions of the engaging protrusion 5 and the engaging recess 6 are prevented from getting wet in the engaging recess 6 to reduce the frictional resistance of the crimping. .

As shown in FIG. 4, a protruding portion 8 is provided at the center of the bottom of the engaging concave portion 6, and when the upper bottom 2 and the grounding bottom 1 are completely connected, the protruding portion 8 The tip of the engagement protrusion 5 is deformed in such a manner that the tip of the engagement protrusion 5 is expanded around the raised portion 8, and the pressing force of the peripheral surface of the engagement protrusion 5 against the inner wall of the engagement recess 6 even inside the engagement recess 6. The engagement friction force between the engagement protrusion 5 and the engagement recess 6 is increased to make it difficult to remove.

Accordingly, when the upper protrusion 2 and the grounding bottom 1 are joined by press-fitting the engaging projections 5 and the engaging recesses 6 to each other, unless the upper bottom 2 and the grounding bottom 1 are artificially separated, the upper bottom 2 and the grounding bottom 1 are not separated. Is secured, so that the footwear can be worn without any difference from conventional footwear.

Further, in order to artificially separate the upper sole 2 and the ground sole 1 from each other, a gap is formed at the junction between the upper sole 2 and the ground sole 1 at a tapered toe or a heel. When the fingers are put on the upper bottom 2 and the grounding bottom 1 to separate them so as to widen the gap, the engaging projections 5 sequentially come out of the engaging recesses 6 and the upper bottom 2 and the grounding bottom 1 are separated. The rejoining of the separated upper sole 2 and the ground sole 1 is performed by placing the upper sole 2 on the ground sole 1 and putting a foot on the upper sole 2 to weigh the user. The upper bottom 2 and the ground bottom 1 are firmly connected by elastically press-fitting into the inside 6.

In the footwear of the present invention, the engaging projections 5 and the engaging recesses 6 are standardized (standardized) so that the upper sole 2 and the ground sole 1 are interchangeable for the same size and the same kind of footwear. I have. When the upper bottom 2 and the ground bottom 1 are made compatible in this way, the interchange of the individually produced top bottom 2 and the ground bottom 1 can be performed on the user side, for example, one common ground bottom. For one,
Sandals by combining the upper sole 2 with the belt-shaped upper cover 3 attached to it, or combining the upper sole 2 with the shoe upper 4 attached thereto to form shoes, or one upper sole with different designs etc. It can be easily used by replacing the upper cover 3. Further, even if a part of the footwear is damaged, the footwear itself is not discarded, and the economic loss is reduced.

[0029]

The present invention is embodied in the form as described above. According to the present invention, the upper bottom with the upper is mounted on the ground bottom, and the engaging projection on the upper bottom is connected to the ground bottom. The upper sole and the ground sole are not separated unless the upper sole and the ground sole are artificially separated from each other by crimping engagement with the engaging concave part of the above. It can be worn with no change. In addition, by standardizing the engagement protrusion and the engagement recess and making the upper bottom and the ground bottom compatible, it is easy to make sandals or shoes having a common ground bottom on the user side. In particular, sandals can be replaced only by the instep, and can be used in various ways according to the user's preference. Further, even if a part of the footwear is damaged, the footwear itself is not discarded, so that economic loss can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which an upper bottom and a ground bottom of a sandal to which the present invention is applied are separated.

FIG. 2 is a perspective view showing a state in which an upper sole and a ground sole of the shoe to which the present invention is applied are separated.

FIG. 3 is a plan view of a ground bottom.

FIG. 4 is a partial cross-sectional view showing a coupling state between an upper bottom and a ground bottom corresponding to line AA in FIG. 3;

FIG. 5 is an exploded view of the upper of the sandal.

FIG. 6 is a vertical cross-sectional view of an upper part of a sandal.

[Description of Signs] 1 Grounding bottom 2 Upper bottom 3 Upper 4 Upper 5 Engagement protrusion 6 Engagement recess 7 Hole 8 Ridge

Claims (5)

[Claims] 1. An article of footwear in which an upper sole with an upper cover attached thereto is provided on a grounding sole, wherein a number of engaging projections are provided on the lower surface of the upper sole, and the projections are press-fitted into engaging recesses provided on the upper surface of the grounding sole. Footwear characterized in that the upper sole and the ground sole are engaged and separated by being engaged. 2. A large number of engaging projections and engaging recesses scattered on an upper bottom lower surface and a ground bottom upper surface are divided into an inner group and an outer group. 2. The footwear according to claim 1, wherein the engagement projections and the engagement recesses of the outer group are provided slightly inclined inward with respect to the engagement direction. 3. The engagement projection and the engagement recess are formed in a columnar cross section, and the engagement projection base is pressed to the engagement recess opening over the entire circumference in the engaged state. Footwear according to item 2. 4. A protruding portion is provided at the center of the bottom of the engaging recess, the protruding portion of the engaging protruding portion is brought into contact with the protruding portion, and the protruding portion of the protruding engaging portion is deformed around the protruding portion. The footwear according to any one of claims 1 to 3, wherein a pressing force of the surface is increased. 5. The footwear according to claim 1, wherein mounting holes are provided at both ends of the upper of the sandal for fastening to the engaging projections.