KR102631800B1 - Shoes equipped with a midsole that can be detached and detached by assembly - Google Patents

Abstract

The present invention is applicable to the sole of a shoe, and in particular to a shoe in which the sole and the upper are integrally molded, making it possible to provide an improved shoe compared to the conventional one. It is made of a lower plate, and a space is formed in the direction of the connecting table from the lower plate, so that when the lower plate is pressed from both sides, the upper plate is folded at a certain angle to provide ease of connection to the coupling groove of the midsole. This space allows for molding. In this case, it can provide uniformity and ease of cooling.

Description

Shoes equipped with a midsole that can be detached and detached by assembly}

The present invention is applicable to the sole of a shoe, and in particular to a shoe in which the sole and the upper are integrally molded, making it possible to provide an improved shoe compared to the prior art.

Currently, most shoes are made up of a sole (midsole and outsole) and an upper. In most shoes, the sole and upper are manufactured separately and then combined through post-processing.

In addition, the sole of these shoes is equipped with a midsole that can be provided on the upper side with an insole (aka insole) that can be in close contact with the sole of the wearer's foot, and an outsole to protect the midsole.

In addition, most of these midsole can be foamed or puffed for cushioning, and the outsole is mostly made of a material such as rubber that is not easily damaged on the bottom of the midsole to protect the midsole.

However, recently, with the development of various materials for foam-molded midsole, the outsole has been foam-molded into a material that is not used but is not easily damaged. Therefore, the outsole is only partially used in areas that may come into strong contact with or rub against the ground when walking. It can be attached.

Therefore, in this case, when attaching a partially attached outsole using an adhesive method, the use of adhesive, the molding of various shapes of the outsole attached using adhesive, and the solidity and moisture of the molded outsole in the attached state can be easily removed. In order to prevent delamination, selection of adhesive, maintaining the adhesive for a certain period of time while attaching the outsole, and maintaining the attached state with a certain pressure while attaching the outsole can resolve this rigidity and the possibility of detachment. In this case, a significant amount of manufacturing time elapses for manufacturing, which may eventually lead to an increase in manufacturing costs.

However, when manufacturing shoes in which the sole and upper are integrally molded so that they can be worn comfortably at a low price, partially gluing the outsole using this adhesive method reduces price competitiveness in the market due to an unnecessary increase in cost. can occur.

In addition, since the method of partially attaching these outsoles is determined by the manufacturer's arbitrary choice, from the user's perspective, the partial attachment of these outsole not only provides an outsole that can vary depending on the user's walking habits, but also reduces manufacturing costs. A method to enable savings was required.

Therefore, in response to this demand, it has been proposed that an assembled outsole can be installed by assembling a joint groove of a certain depth, which includes an expansion groove in the midsole, a connecting groove smaller than the expansion groove, and a seating groove wider than the connecting groove. , an upper plate and a lower plate each having a wider width than the connecting rod are provided at both ends of the connecting rod so that they can be coupled to the coupling groove. The upper plate is inserted into the midsole and inserted into the expansion groove, and the connecting rod is positioned in the connecting groove while the lower plate It is coupled so that it is seated in the seating groove to prevent the outsole that can be assembled from being randomly removed from the coupling groove after being combined, and while the lower plate is seated in the seating groove of the midsole, the exposed surface is exposed to the outside of the midsole, forming the outsole. This function is made possible.

However, the disadvantage of this structure is that the assembled outsole is harder and has some ductility than the foam-molded midsole, so there is difficulty in joining it to the defective groove, so if the joining operation is repeated, significant damage to the worker's wrist, etc. There is a problem that work efficiency is reduced due to strain, and especially when the user wants to replace the assembled outsole himself, using various sharp tools may cause damage (tearing) to the midsole by mistake. Not only does it have disadvantages, but due to the difference in strength between the midsole and the outsole assembled, pressure can be directly transmitted to the sole of the foot while walking, which can become another cause of pain.

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Accordingly, the present invention is intended to solve this problem, and is intended to improve the formability of the assembled outsole at the same time as eliminating the cause of pain as well as ease of assembly.

For this purpose, the assembled outsole consists of an upper plate and a lower plate with a diameter larger than the connecting rod, and a space is formed in the direction of the connecting rod from the lower plate, so that when the lower plate is pressed from both sides, the upper plate is folded at a certain angle and is placed in the coupling groove of the midsole. This is to provide ease of joining, and due to this space, uniformity and ease of cooling can be provided when molding.

In addition, the exposed surface of the upper plate is formed as a downward curved surface to provide greater ease of insertion when inserted into the coupling groove of the midsole, and even in the inserted state, the contact surface with the sole of the wearer's foot is minimized to minimize pressure. At the same time, the connection surface connected to the connection bar is formed at an inclined angle, so that the coupling force with the coupling groove in the combined state can be excellent.

In addition, the exposed surface of the lower plate is formed as an inclined surface in the direction of the outer edge rather than the part where the space is formed, so that when the exposed surface of the assembled outsole is in close contact with the ground when walking, the space opens due to the inclined surface even when the hardness is stronger than the midsole. It is cushioned to minimize partial pressure when walking.

Therefore, it is possible to facilitate the assembly of the outsole due to the space to the coupling groove of the midsole, which not only improves productivity, but also allows the wearer to exchange the outsole on his own by purchasing various types of outsoles that are arbitrarily assembled. Of course, due to the assembled outsole, which has a harder hardness than the midsole when used, the pressure transmitted to the sole after wearing can be minimized by dispersing the pressure by spreading outward due to the space, and the exposed surface of the lower plate where this space is formed is It is made of an inclined surface, so when it comes into contact with the ground, this space repeatedly opens to the left and right, thereby eliminating pressure.

Figure 1 is an embodiment showing the external state of the assembled outsole of the present invention.
Figure 2 is another embodiment of the assembled outsole of the present invention
Figures 3a and 3b are cross-sectional views of Figures 1 and 2.
Figures 4a and 4b are cross-sectional views of the upper plate in a folded state while the space portion of Figures 3a and b is pressed.
Figure 5 is a cross-sectional view of the outsole being assembled according to the present invention in a state in which another space portion is formed.
Figure 6 is a cross-sectional view of the assembled outsole of the present invention being elastically operated by an inclined surface provided on the lower plate.
Figure 7 is a cross-sectional view of the assembled outsole of the present invention coupled to the coupling groove of the midsole.
Figure 8 shows an embodiment of the present invention in which uneven portions are provided on the exposed surface of the lower plate of the outsole to be assembled.

First, the terms used in the specification and claims of the present invention should not be construed limited to their dictionary meaning, based on the principle that the inventor can appropriately define the concept of the term in order to explain his or her invention in the best way. Therefore, it should be interpreted with meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are only preferred embodiments of the present invention and do not express the entire technical idea of the present invention, and therefore various equivalents and It should be understood that variations may exist.

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

As shown in Figures 1 to 8, the configuration of the present invention is a midsole 200 provided with an assembled outsole 100 and a defect groove 210 through which the assembled outsole 100 can be detachably coupled. It comes true.

At this time, the coupling groove 210 provided in the midsole 200 is an upper groove 211 provided with an expansion groove 211a that communicates from the upper side to the left and right, and a connection hole having a smaller planar cross-sectional area than the expansion groove 211a ( 212) and a lower groove 213 including a seating groove 213a having a larger planar cross-sectional area than the connection hole 212.

At this time, the seating groove 213a should have a certain depth if possible, and it is better to maintain this depth at a level that can cover a certain thickness of the lower plate 130 of the assembled outsole.

In the present invention, the depth of the coupling groove 210 is set to a depth of 1/2 to 2/3 of the total thickness of the midsole to minimize the pressure transmitted to the sole of the foot through the insole when worn by the wearer. To relieve this pressure, a solid insole can be provided.

In addition, the expansion groove (211a) of the midsole, into which the protruding border (110a) of the upper plate (110) constituting the outsole, is inserted, is sufficient to prevent the upper plate (110) from falling out after being coupled, and to enable close adhesion. It is better to make it as large as possible, and when a space 140 is formed in the lower plate 130 at the center of the connection hole 212 where the outsole connecting rod 120 is inserted, it also communicates with the connecting rod 120 and moves upward. It is best to have a constant diameter as much as possible, and if possible, it is best to have more than 2/3 of the diameter of the upper plate 110 for support or coupling strength.

In addition, the depth of the seating groove 213a constituting the lower groove 213 of the midsole is slightly shallower than the height of the lower plate 130, so that the lower plate 130 does not flow while seated in the seating groove 213a and remains on the ground. When in close contact with the bottom plate 130, it is better to allow the exposed surface 131 of the lower plate 130 to be in close contact with the ground and open outward due to the space 140.

In addition, the outsole 100 assembled and coupled to the coupling groove 210 of the midsole 200 is provided with an upper plate 110 and a lower plate 130 having a larger diameter than the connecting rod 120 at both ends of the connecting rod 120. In the lower plate 130, in the direction of the connection bar 120, a space portion 140 is formed to be open from the bottom of the outsole to a position in sharp contact with the upper plate, and when pressed from the edge of the lower plate 130 to both sides, the upper The protruding edge 110a of the plate 110 can be folded downward at a certain angle to provide ease of coupling to the coupling groove 210 of the midsole 200.

In addition, the outsole 100 assembled in the present invention is made of plastic with rubber properties due to the space 140, and is molded by injection molding or press molding by vulcanizing the kneaded rubber raw material. Afterwards, it is possible to provide uniformity of cooling and ease of molding, thereby providing ease of manufacturing and excellence in quality.

Also, at this time, in the present invention, the exposed surface of the upper plate 110 is formed as a downwardly curved surface 111 from the center to the outside, so that the coupling groove 211a of the upper groove 211 of the midsole is formed by the space 140. When folded for coupling, the folding angle at which the protruding edge 110a of the upper plate 110 is folded becomes larger, and when inserted into the coupling groove 210 of the midsole, it provides greater ease of insertion. By minimizing the contact surface with the sole of the wearer's foot in the inserted state, pressure can be minimized.
In addition, as shown in Figure 5, the connection surface 112 connected to the connection bar 120 of the upper plate 110 is formed at a downward angle so that the expansion groove 211a of the coupling groove 210 of the midsole and the connection hole 212 ), the bottom surface (211b) of the expansion groove (211a) in the coupled state is pressed at the connected portion, thereby improving the coupling force.
Because of this, even when the upper plate 110 is made thin, arbitrary separation can be prevented in the coupled state, and at the same time, ease of coupling can be provided.

In addition, as shown in Figure 6, the exposed surface 131 of the lower plate 130 is formed as an inclined surface 132 downward in the direction of the outer edge from the portion where the space 140 is formed, so that the outsole 100 assembled when walking ), when the exposed surface 131 is in close contact with the ground, even when the outsole is harder than the midsole 200, the space 140 and the downward slope 132 provide self-absorbing cushioning, so that the shock is transmitted to the sole of the foot when walking. This was done to minimize possible pressure on the area.

In addition, when the space 140 is expanded from the connecting base 120 to the lower plate 130 as shown in FIGS. 5 and 7, a protruding border made of the curved surface 111 of the upper plate 110 ( There is an advantage that the degree to which 110a) is folded becomes even larger, and when the space part of the lower plate 130 is provided with an inclined surface 132 downward in the direction of the edge, it is easier to open and the cushioning can be improved. There is.

In addition, as shown in Figure 3b, when the outer edge surface where the flesh thickness of the lower plate 130 is formed is formed as an inclined surface 133 in a downward direction that spreads outward, the coupling groove 210 of the midsole 200 is formed. It is possible to provide tightness of seating by pressing the side surface 213b of the seating groove 213a in the state of being seated in the seating groove 213a of the lower groove 213.

In addition, when an uneven surface is formed on the exposed surface 131 of the lower plate 130 to facilitate folding, when the lower plate is pressed by this uneven surface, the thickness becomes relatively thin, making it easy to press with little force. can be provided, and the non-sleep function can also be provided.

In addition, as shown in Figure 7, the expanded groove 211a of the upper groove 211, which forms the coupling groove 210 of the midsole 200, is provided with a rectangular cut surface to form a downward curved surface of the upper plate 110 ( When 111) is in close contact with the upper surface 211b of the rectangular upper groove 211, the central part of the downward curved surface 111 presses the upper surface 211b of the upper groove 211, causing the upper groove 211 to It is possible to maintain close contact with the upper surface 211b without a gap.

In addition, the connection bar 120 of the outsole 100 assembled in the present invention is made of a polyhedron 120a as shown in Figure 3b, so that it is rotated while tightly coupled to the connection hole 212 of the midsole 200. By preventing this, it is possible to prevent the outsole 100 from rotating while assembled on the midsole even when the midsole 200 is dragged on the ground.

In addition, when the position where the assembled outsole 100 used in the present invention is coupled is located at the acupuncture point on the sole of the wearer's foot, the effect of acupressure such acupuncture point during walking can also be generated, and in this case, the wearer's request can be achieved. By purchasing and combining another outsole with different hardness, it is possible to provide acupressure to the soles of the feet in various states according to the wearer's needs.

100:Outsole
110: Upper plate 110a: Protruding border
111: Downward curved surface 112: Connection surface
120: Connecting rod 130: Lower plate
131: exposed surface 132: inclined surface
133:Slope
140: Space department
200: Midsole
210: Combining groove 211: Upper groove
211a: Expansion groove 211b: Top surface
212: Connection hole 213: Lower groove
213a: Seating groove 213b: Side

Claims (6)

The outsole 100, which is detachably fitted into the upper groove having expansion grooves to the left and right provided at the top of the connection hole of the midsole and the lower groove having left and right seating grooves at the bottom, is connected to both ends of a relatively small diameter connection bar at the upper part. It is made up of a plate and a lower plate, and the upper plate has a relatively smaller diameter than the lower plate, and the rim of the upper plate is tightly coupled to the expansion groove, the connecting rod is tightly adhered to the connection hole, and the rim of the lower plate is in the seating groove. In tightly fitting so that the exposed surface of the lower plate is exposed at the midsole,
In the lower plate 130, a space 140 is formed in the direction of the connecting rod 120 and is opened close to the upper plate. When the edges of the lower plate 130 are pressed on both sides, the exposed surface of the upper plate 110 is downward. It is made of a curved surface so that the protruding edge (110a) is folded downward at a certain angle, so that it is easy to connect to the coupling groove 210 of the midsole 200 and the lower plate operates elastically when walking.
The upper groove forming the coupling groove of the midsole has a rectangular cut surface to secure the space, so that the central portion of the downward curved surface of the upper plate of the outsole is curved and protrudes to press the upper surface of the upper groove and engage without a gap. A shoe equipped with a midsole with a detachable outsole using an assembly method that allows for tight adhesion. According to paragraph 1,
The connection surface 112 of the upper plate, which is connected to the connecting stand 120 and spreads outward, is inclined at a downward angle to press and adhere to the bottom surface of the upper groove 211, thereby improving the bonding force and attaching the upper plate 110 ) A shoe equipped with a midsole with a detachable outsole using an assembly method that prevents the sole from falling out arbitrarily. According to paragraph 1,
The exposed surface 131 of the lower plate 130 is formed as an inclined surface 132 downward in the direction of the outer edge from the portion where the space 140 is formed, so that the exposed surface 131 of the outsole 100 is on the ground when walking. In the case of excessive adhesion, even in a state of stronger hardness than the midsole 200, the space 140 and the downward slope provide self-absorbing cushioning to minimize partial pressure that can be transmitted to the sole of the foot when walking. A shoe equipped with a midsole with a detachable outsole using an assembly method. According to any one of claims 1 to 3,
A shoe equipped with a midsole with a detachable outsole using an assembly method in which the space portion 140 is gradually expanded outward from the connection bar 120 to the lower plate 130 while being close to the upper plate. According to any one of claims 1 to 3,
The outer edge surface on which the thickness of the lower plate 130 of the outsole is formed is formed as an inclined surface 133 to gradually become wider in a downward direction, so that the side of the seating groove 213a constituting the lower groove of the midsole 200 ( 213b) A shoe equipped with a midsole with a detachable outsole using an assembly method that is combined while pressing to improve the tightness of the connection. According to claim 1 or 2,
A shoe equipped with a midsole in which the outsole is detachable by an assembly method characterized in that the outer surface of the connecting base 120, where a space is formed inside, is polygonal to prevent arbitrary rotation while coupled to the connecting hole. .