JP4612327B2 - Shoe frame equipment - Google Patents

Description

The present invention relates to the frame equipment of shoes.

For example, for the purpose of weight reduction, shoes having a shoe sole formed in a mesh shape are known (see Patent Documents 1 to 3).
In particular, in Patent Document 1, the outer peripheral edge portion of the sole base (shoe sole) is formed in a frame shape, and a plurality of bridge portions are formed continuously to the frame. As a result, a large notch portion is formed in the shoe sole, so that significant weight reduction can be achieved. A fine mesh is formed in the notch.

Japanese Patent Laid-Open No. 2002-306207 (FIG. 1) Japanese Patent Laid-Open No. 2002-85104 (FIG. 3) JP-A-9-271404

  In recent years, however, sports shoes have been required to be lighter in grams. In addition, in order to reduce the loss of leg strength, it is also important to support from the sole to the inside and outside of the foot.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a non-foamed resin shoe frame device that is lightweight and has a foot support function without damaging the foot .

  In order to achieve the above object, a shoe frame device according to the present invention is a net-like shoe frame device that supports at least the sole and is integrally formed of a non-foamed resin, at least from the ribs. A loop-shaped main frame that is long back and forth along the sole of the foot near the distal head of the foot bone, an outer frame disposed on the outer periphery of the main frame along the inner and outer sides of the foot, and the loop-shaped main frame A plurality of connecting frames which are installed in the loop and connect the main frame in the width direction, and a plurality of connecting frames which are provided so as to wind up from the main frame toward the outer frame and connect between the main frame and the outer frame. The hoisting frame of the book is integrally formed.

In the shoe frame device of the present invention, a main frame, an outer frame, a connecting frame, and a hoisting frame are integrally formed. For this reason, the frame device is formed in a heel shape from the sole to the inner and outer sides of the foot. Have.
The frame device of the present invention is used in place of a conventional plate-like hard shoe sole (for example, Japanese Patent Laid-Open No. 2001-340101) or a shoe sole plate (Japanese Patent Laid-Open No. 2000-316604).

  In the present invention, “a main frame having a loop shape extending back and forth along the sole from the rib to the vicinity of the distal metatarsal head” means that the main frame is located from the rib portion to the distal metatarsal head. The main frame has a loop behind the MP joint, and a portion extending from the loop to the MP joint is formed integrally with the loop. This includes cases where In addition, when a bar extending in the width direction of the foot is installed in the loop, or a plurality of small loops are integrally formed to form a main frame so that the sole can be stably supported Is also included.

In a preferred embodiment of the present invention, the main frame has an average value of the ratio of the thickness to the width of the surface along the sole surface (hereinafter referred to as “aspect ratio”) of 0.3 to 2.0. It is, and the average cross-sectional area of each main frame is set to 5mm ² ~30mm ^2.
By setting the main frame to such a value, the ratio of the cross-sectional modulus to the cross-sectional area of the main frame is increased, so that the bending rigidity of the main frame when the foot is bent is large, so that weight reduction can be realized. In addition, since the width of the surface along the surface of the sole is small, it is easy to deform along the surface of the sole, so that the along the foot is not damaged.

  That is, when the average aspect ratio is less than 0.3, excessive bending occurs in the main frame, and it is necessary to increase the cross-sectional area of the main frame, and weight reduction cannot be achieved. On the other hand, if the average aspect ratio exceeds 2.0, it is difficult for the main frame to bend, and it is difficult to bend and kick the foot. Therefore, the average aspect ratio is more preferably set to about 0.4 to 1.0.

Further, if the average cross-sectional area of the main frame is less than 5 mm ² , excessive bending occurs in the main frame, and it becomes impossible to efficiently generate a propulsive force. On the other hand, if the average cross-sectional area of the main frame exceeds 30 mm ² , the weight increases and the main frame is less likely to be bent, making it difficult to bend and kick the foot. Therefore, the average cross-sectional area of the main frame, is more preferably set to about 7 mm ² to 20 mm ^2.

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In the frame device of the shoe, a main frame that is long along the soles and a connecting frame that is laid between the main frames are integrally formed. Therefore, it has a foot support function without damaging the foot.
In particular, the average aspect ratio and the average cross-sectional area are set to appropriate ranges as described above, and moderate flexibility can be maintained, so that the weight along the foot is not impaired while being reduced.

As a preferred embodiment of the present frame device, an outer frame disposed on the outer periphery of the main frame along the inner and outer side surfaces of the foot, and the main frame and the outer frame provided so as to roll up from the main frame toward the outer frame. A plurality of hoisting frames connecting the frames are further formed integrally.
Thus, by further including the outer frame and the hoisting frame, the foot support function is further improved.

In the present invention, it is preferable that each frame is arranged so that two of the plurality of connecting frames in the loop of the main frame and a part of the main frame form a substantially triangular shape. .
Since the two connecting frames and a part of the main frame form a substantially triangular shape, the torsional rigidity of the sole of the main frame is increased, and the torsion of the sole can be suppressed. Moreover, since it is not necessary to provide another member for reinforcing rigidity, the weight can be further reduced.

Further, it is preferable that each of the frames is arranged such that two of the plurality of hoisting frames and a part of the main frame and the outer frame form a substantially square shape.
Since the two hoisting frames and the main frame and a part of the outer frame are arranged in a square shape, the hoisting of the hoisting part and the outer frame is allowed, so as not to damage the legs. it can.

Further, the main frame is further provided from the MP joint toward the toe, a horizontal bar that connects the main frames in the width direction at a portion generally along the distal metatarsal head, and left and right of the main frame It is preferable that a vertical frame extending forward from the horizontal bar is further integrally formed at substantially the center of the frame.
By providing such a horizontal bar and a vertical frame, local excessive bending of the forefoot can be suppressed.

Further, the outer frame is inclined upward as it goes rearward on the inner side and outer side of the foot, and extends laterally between the outer frame and the main frame on the inner and outer sides of the rib. It is preferable that a counter frame intersecting with the hoisting frame is further provided.
By providing the counter frame, excessive deformation of the counter can be suppressed and the counter can be formed high.

The outer frame is preferably formed in a loop shape on the outer periphery of the main frame.
Since the counter frame is formed in a loop shape, the rigidity of the outer frame is increased, and it is not necessary to provide another member for reinforcing the rigidity, and the weight can be reduced.

Further, it is preferable that the outer frame is notched and discontinuous at a rear portion of the bag.
Since the outer frame is notched, the outer frame is improved along the foot with respect to the heel, and the mold can be easily opened during molding, thereby facilitating molding.

Moreover, it is preferable that the thin part which can be joined to the upper of the shoe is further integrally formed with the frame device.
Such a thin portion serves as a sewing allowance for the upper, and the upper can be easily sewn (sewn).

Here, as shown in FIGS. 2 (a) and 2 (c), a shoe frame device in which a reverse warp portion 21w curved upward from the outermost peripheral end of the frame device toward the center of the foot is formed in the heel portion. In order to manufacture, it is preferable to use the following mold apparatus.
Such a mold apparatus is a mold apparatus for forming a shoe frame integrally formed of a non-foamed resin, and includes a first mold and a second mold that mesh with each other in the vertical direction of the foot. A cavity for pouring molten resin is formed between the first mold and a flexible mold made of rubber or resin having an undercut portion with respect to the vertical direction.

  "Undercut" refers to a part of a molded product that cannot be released unless the molded product is deformed or a special mold structure is used when the molded product is removed from the mold. For example, a portion that is difficult to be molded by the vertical opening of the mold, such as the reverse warped portion 21w, corresponds to this. The “undercut portion” refers to a portion corresponding to the undercut in the flexible mold.

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Embodiments of the present invention will be described below with reference to the drawings.
In the following description, the frame device 1 for shoes for the right foot will be described as an example.
As shown in FIG. 1, the frame device 1 is integrally formed using a non-foamed resin as a main material. This device includes a plurality of frames, and each frame is formed into a hook shape that wraps around the sole and both sides of the foot.

2A to 2C are an inner side view, a bottom view, and an outer side view of the frame device 1, respectively. Hereinafter, the respective frames constituting the frame apparatus 1 will be described sequentially.
As shown in FIG. 2 (b), this apparatus has a loop-shaped main frame 10 which is long in the front-rear direction along the sole, and side surfaces Si on the inside and outside of the foot as shown in FIGS. 2 (a) and 2 (c). , So, and an outer frame 20 disposed in a loop shape on the outer periphery of the main frame 10. In FIG. 2B, the main frame 10 and the outer frame 20 are shaded. 2A and 2C, only the outer frame 20 is shaded.

Mainframe 10:
The main frame 10 shown in FIG. 2B includes an inner main frame 10a located on the inner side Si of the foot and an outer main frame 10b located on the outer side So of the foot.
The inner main frame 10a passes through the first and second distal phalanges A1, A2 through the first proximal phalange B1, the first metatarsal bone C1, the inner wedge bone (first wedge bone) D1, and the scaphoid bone E. It is provided in the range over the bone G.
The outer main frame 10b extends through the second to fifth distal phalanges A2 to A5, the fourth proximal phalange B4, the fourth and fifth metatarsals C4 and C5, the cuboid F and the radius G. Is provided.
In FIG. 2B, the proximal phalanx is hatched.

FIG. 4 is an end view of the vicinity of the heel portion of the frame device 1 of the shoe.
As shown in FIG. 4, for example, the main frame 10 has an average value of the ratio (aspect ratio) of the thickness H to the width W of the surface along the surface of the sole, set to 0.4 to 1.0, and the average cross-sectional area of each main frame 10 is set to 10 mm ² 25 mm ^2.
That is, since the main frame 10 is thick and the aspect ratio is sufficiently large, it is possible to reduce the weight and not to damage the foot.

Outer frame 20:
The outer frame 20 shown in FIG. 2 (b) includes an inner outer frame 20a positioned on the inner side Si of the foot and an outer outer frame 20b positioned on the outer side So of the foot.
As shown in FIGS. 2A and 2B, the inner outer frame 20a extends from the inner side of the first proximal phalanx B1 and the first metatarsal C1 to the inner ends of the inner wedge bone D1 and the scaphoid bone E. It is provided in a range extending through the lower side and extending inside the rib G.
As shown in FIGS. 2B and 2C, the outer outer frame 20b passes from the outer side of the fifth proximal phalange B5 and the fifth metatarsal bone C5 to the outer side of the lower end of the cubic bone F, and the ribs. It is provided in a range extending outside G.
In order to provide an appropriate support function, the outer frame 20 in the heel region is preferably provided so as to cover at least the rib bulge. In this case, the outer frame 20 can be provided along the lower or upper portion of the rib bulge.

  As shown in FIGS. 2A and 2C, the outer frame 20 is inclined upward as it goes rearward on the inside and outside of the foot. That is, as shown in FIG. 2A, the inner outer frame 20a is inclined upward on the inner side surface Si of the foot from the lower end of the scaphoid E to the rear upper end of the rib G toward the rear. ing. On the other hand, as shown in FIG. 2 (b), the outer outer frame 20b is inclined upward on the outer side surface So of the foot from the lower end of the cubic bone F toward the rear upper end of the rib G toward the rear. Yes.

Winding frame 21:
Between the main frame 10 and the outer frame 20 shown in FIGS. 1A and 1B, the main frame 10 and the outer frame 20 are provided so as to wind up from the main frame 10 toward the outer frame 20. A plurality of hoisting frames 21 that connect the two are provided.
The hoisting frame 21 is formed to be curved along the shape of the side surface of the foot, and in particular, in the heel portion of the foot, the reverse warped portion 21w (see FIG. 5) that is greatly curved toward the center of the foot (center of the rib). 2 (a), (c)). The reverse warp portion 21w is provided above a counter frame 22 described later.

As shown in FIGS. 2A and 2B, among the plurality of hoisting frames 21, the two hoisting frames 21 and the main frames 10a and 10b and a part of the outer frames 20a and 20b are as follows. Are arranged so as to form a substantially rectangular shape.
In this way, by being arranged so as to form a substantially rectangular shape, it is possible to allow twisting of the hoisting frame 21 and the outer frame 20 and not to damage the foot.

  In addition, in order to suppress the fall to the inner side of the hip part due to the hallux valgus (costal convolution), the winding frame 21 on the inner side of the hook has a width and thickness, and a longitudinal elastic modulus (Young Preferably, either one or both of (rate) is set larger than the outer hoisting frame 21. In other words, it is preferable that the rigidity of the hoisting frame inside the heel is set larger than that outside the heel.

Counter frame 22:
Counter frames 22 are provided on the inner and outer sides of the rib G. The counter frame 22 is provided between the main frames 10 a, 10 b and the outer frames 20 a, 20 b at the front and rear, and is provided so as to intersect the hoisting frame 21. In the present embodiment, the counter frame 22 is also provided behind the rib G.
With the counter frame 22, excessive deformation of the flange portion of the outer frame 20 can be suppressed, and the counter frame 22 can be formed high.

Horizontal bar 15 and vertical frame 16:
As shown in FIG. 2 (b) and FIG. 3 (a), a loop-like region is generally located along the distal metatarsal bone head behind the MP joint (two-dot chain line in FIG. 3 (a)). A horizontal bar 15 is provided to connect the inner and outer main frames 10a and 10b. The MP joint refers to a joint constituted by the proximal phalanx B (shown by hatching) and the metatarsal bone C shown in FIG.

A vertical frame 16 extending forward from the horizontal bar 15 is provided at the center of the left and right sides of the main frame 10. The vertical frame 16 extends from the horizontal bar 15 to the main frame 10 across the MP joint. In FIG. 3A, the horizontal bar 15 and the vertical frame 16 are shaded.
Thus, since the horizontal bar 15 and the vertical frame 16 are provided, local excessive bending of the forefoot portion 2F can be suppressed.

  In the present embodiment, the vertical frame 16 extends also behind the horizontal bar 15 and is connected to the connecting frames 11a and 11b. A plurality of connection bars 17 extending in the width direction X from the vertical frame 16 toward the main frames 10a and 10b are provided.

  Of the connection bars 17, rear connection bars 17B are arranged so as to extend from the vicinity of the intersection of the horizontal bar 15 and the vertical frame 16 to the inner and outer main frames 10a and 10b. Bending rigidity is reinforced by the rear connection bars 17B and 17B, the hoisting frames 21 and 21 and the vertical frame 16 which are arranged on substantially extension lines of the connection bars 17B and 17B.

Connecting frame 11:
A plurality of connecting frames 11 (11a, 11b) that connect the main frames 10a, 10b in the width direction X are formed between the inner and outer main frames 10a, 10b. The connection frame 11 is formed behind the horizontal bar 15.
Of the plurality of connecting frames 11, two connecting frames 11 and a part of the main frame 10 (10a or 10b) are arranged so as to form a substantially triangular shape.
By arranging the connection frame 11 so as to form a substantially triangular shape in this way, the torsional rigidity of the sole of the main frame 10 can be improved and the weight can be reduced. Moreover, the bending rigidity is strengthened by the connection frame 11, and the fall of the heel due to the inversion of the heel portion can be suppressed.

  In addition, about the 1st connection flame | frame 11a which goes to an outer back from the inner side of the front foot part 2F (going from an inner toe to an outer side heel), either one of width and thickness, and a longitudinal elastic modulus (Young's modulus) or It is preferable that both sides are set to be larger than the second connection frame 11b from the outer side of the front foot portion 2F toward the inner rear side (from the outer toe toward the inner heel). In this case, the hip varus before landing is suppressed, and a rapid heel valgus immediately after landing can be suppressed.

  As shown in FIG. 1 (b), a fixing portion 18 for fixing a metallic spike or a spike mounting member for mounting a spike is embedded on the bottom surface of the front foot portion 2F of the apparatus. A hole 19 and the like are provided.

Mounting structure:
As shown in FIG. 4, thin portions 20T are formed at the upper ends of the outer frames 20a and 20b. The thin-walled portion 20T is for enabling joining to an upper (upper) U of a shoe indicated by a two-dot chain line, and is formed, for example, in a brim shape from the upper end of the outer frame 20 to 6 to 7 mm. Yes. By sewing (sewing) the thin portion 20T and the upper U, the frame device 1 and the upper U can be easily connected. This completes the shoe.

In addition, if the aspect ratio of each of the frames 10, 11, 16, 20 and the bars 15, 17 and the like is sufficiently increased, the foot can be easily deformed along the shape of the foot, so that the supportability of the foot is improved.
Moreover, since the frame apparatus 1 has a perforated frame structure using a large number of frames and bars, the shape can be easily changed. Therefore, even when a gap is generated between the foot and the frame device 1, the frame device 1 is sufficiently fitted to the foot by tightening a shoelace or belt (not shown) provided in the upper U. Is possible. Various inner shoes and inner socks (not shown) can also be adopted according to the mounting structure. Thereby, it is also possible to further improve the fit.

Processing example:
Here, the rigidity required for the shoe sole is slightly different depending on the ability of the player such as the speed and kicking ability of the player, and the competition item such as straight running and curve running. However, since general shoe soles are produced by injection molding using a mold and the mold is expensive, it is difficult to manufacture various types of shoe soles according to the player's ability and competition item.
It is also conceivable to process the sole after molding the sole, but it is difficult to process with an integrated sole that is not a frame structure, and damage to the sole, such as crack growth from cut or cut parts, is difficult. May occur.
Since this frame apparatus 1 is composed of a plurality of frames, the rigidity of an arbitrary portion can be arbitrarily changed by processing a predetermined frame. Below, a process part is illustrated.

  For example, the frame device 1 shown in FIG. 3A is formed in a state suitable for high-speed straights for track and field sports (for short-distance running on a straight course). By cutting a predetermined frame of the frame device 1 for high-speed straight or notching and making it discontinuous, the bending rigidity of the forefoot portion 2F and the torsional rigidity of the middle foot portion and the heel portion are changed, and the medium speed The frame device 1 can be provided for use at a low speed, or for a high speed curve or a low speed curve.

In FIGS. 3B to 3E, halftone dots are given to the processed parts.
As shown in FIG. 3 (b), in the forefoot portion 2F, it can be processed for medium speed by removing a part of the connecting bar 17 (a portion with halftone dots).
Moreover, as shown in FIG.3 (c), by removing a part of main frame 10, the connection bar 17, and the outer frame 20, it can process for low speed.
3 (b) and 3 (c), a part of the main frame 10 is notched, but in the case of FIG. 3 (b), the horizontal bar 15 constitutes a part of the main frame 10. In the case of FIG. 3C, the connecting frame 11 constitutes a part of the main frame 10, so that the main frame 10 forms a loop behind the MP joint in any case.

Since the vehicle travels along a curve, the frame device 1 needs to be allowed to twist. Further, in high-speed curve traveling with a large lateral load, the lateral load is larger than in low-speed curve traveling, and high torsional rigidity is required.
Therefore, as shown in FIG. 3 (d), it is possible to process the high-speed curve by removing the inner portion of the counter frame 22 (the portion with halftone dots).
On the other hand, as shown in FIG. 3 (e), the counter frame 22 in the inner part is removed, and the part on the back side of the outer frame 20 (the part with halftone dots) is notched and made discontinuous. Can be processed for curves.

  In this manner, a shoe frame device having different characteristics can be appropriately created from one shoe frame device in accordance with the player's ability and the sporting event. Therefore, it is not necessary to produce expensive molds for each player's ability and competition item, so that the initial cost of the manufacturing apparatus can be greatly reduced.

Mold equipment:
Here, as described above, the hoisting frame 21 is formed with the reverse warped portion 21w that is largely curved toward the center of the rib at the heel portion of the foot. In the conventional manufacturing method, in order to form the reverse warp portion 21w, it is necessary to use a complicatedly divided mold, which complicates the manufacturing process and increases the cost because many molds are created. It was.
Therefore, in order to solve the above-described problems, the mold apparatus of the present invention has the following features.
As shown in the cross-sectional view of FIG. 5A, the mold apparatus for manufacturing the frame apparatus 1 includes a first mold (male mold) 41 and a second mold that mesh with each other in the vertical direction Z of the foot. A mold (female mold) 42 and a flexible mold 43 made of rubber or resin are provided.
The flexible mold 43 is a mold that is used in close contact with the first mold 41, and a cavity 45 for pouring molten resin is formed between the flexible mold 43 and the first mold 41. The flexible die 43 is formed with an undercut portion 44 having a reverse warp shape with respect to the vertical direction Z. As the flexible mold 43, for example, rubber or resin having a higher melting point than the melting point of the resin to be molded, such as silicon rubber or polyurethane resin, can be used.

Molding method:
Next, a molding method using the above-described mold apparatus will be described.
First, as shown in FIG. 5A, the flexible mold 43 is mounted on the first mold 41 from an oblique direction Zs that is different from (intersects with) the meshing direction Z of the molds 1 and 2. After this mounting, the first mold 41 and the flexible mold 43 are engaged with the second mold 42 in the vertical direction Z while the flexible mold 43 is mounted on the first mold 41. A cavity 45 is formed between the first mold 41 and the flexible mold 43.

Thereafter, the cavity 45 is filled with a molten resin. As such a filling step, for example, an injection method in which a resin plasticized by high heat is caused to flow into the cavity 45 while being rotated by a screw can be used.
After the filling, the molten resin is cooled and solidified.

Thereafter, the second mold 42 is moved in the vertical direction Z with respect to the first mold 41 and the flexible mold 43 to open the mold.
After the mold opening, for example, the flexible mold 43 is pulled in the oblique direction Zs by manual work, and the flexible mold 43 is peeled off from the first mold 41.
Thereafter, the molded product is removed from the first mold 41 in the oblique direction Zs.

As described above, since the soft flexible mold 43 made of rubber or resin can be punched obliquely, even if there is an undercut portion 44, injection molding or the like becomes possible. Therefore, a product having a large reverse warp shape can be easily produced.
In addition, it is not necessary to provide a plurality of molds (split molds) according to the undercut portion 44, and operations such as opening and closing the split mold can be omitted, so that a significant cost reduction can be performed.
Furthermore, unlike the case where the mold is made of metal by forming the flexible mold 43 that constitutes the mold with rubber such as silicon, it is not necessary to cut the mold and adjust it to a predetermined shape. The time can be shortened and a large number of molds can be created in a short time. By preparing a large number of flexible molds 43, productivity is improved.

  As shown in FIG. 3 (e), if the outer frame 20 is cut out at the rear portion of the bag, the molded resin can be smoothly taken out, so that it is manufactured using a conventional metal mold. can do.

  Further, in order to embed spikes in the frame and mold, a flexible resin 43 may be provided with a concave hole, and a fixing resin jig with spikes attached in advance to that portion may be insert set. Further, when forming by embedding a spike mounting nut, a concave resin hole may be provided in the first mold 41, and a fixing resin jig in which the nut is previously mounted may be insert set.

The frame device 1 may be a non-foaming resin, and may use, for example, fiber reinforced plastic such as FRP (fiber reinforced plastic) in addition to thermoplastic or thermosetting resin. Since this frame apparatus 1 is used in place of a conventional hard shoe sole, a shoe sole plate, or the like, it is preferable to have a certain longitudinal elastic modulus (Young's modulus). The longitudinal elastic modulus (Young's modulus) of the preferred resin is set in the range of 5 to 12,000 kgf / mm ² . For example, in the case of polyurethane (PU), it is more preferable to set in the range of 5 to ²⁰ kgf / mm ² , and in the case of polyamide (PA), it is more preferable to set in the range of 30 to 50 kgf / mm ² . In this case, it is more preferable to set it in the range of 5,000 to 12,000 kgf / mm ² .

  In the above-described embodiment, the spike is attached to the frame device. However, in addition to the athletics sports shoe to which the spike is attached, this device can be used by attaching a stud and using a soccer spike shoe or cushioning. It can be used for various shoes such as running shoes with members attached.

  This frame apparatus can be used for various sports shoes such as athletics, soccer, and running.

(A), (b) is a schematic perspective view which respectively shows one Example of the frame apparatus of the shoes concerning this invention. (A), (b), (c) is the inner side view, bottom view, and outer side view which respectively show the relationship with the bone | frame of the frame apparatus. (A) is a bottom view of the frame device for high speed straight, and (b) to (e) are partial bottom views of the frame device processed for medium speed, low speed, high speed curve, and low speed curve, respectively. is there. It is an end view of the frame device. It is process drawing which shows the manufacturing method of the same frame apparatus.

1: Frame device 10: Main frame 10a: Inner main frame 10b: Outer main frame 11: Connection frame 11a: First connection frame 11b: Second connection frame 15: Horizontal bar 16: Vertical frame 20: Outer frame 20a: Inner outer Frame 20b: Outer outer frame 20T: Thin part 21: Winding frame 22: Counter frame 41: First mold 42: Second mold 43: Flexible mold 44: Undercut part 45: Cavity G: Rib H: Thick MP: MP joint Si: inner surface So: outer surface U: upper W: width of the surface along the surface of the sole X: width direction

Claims (9)

A net-like shoe frame device that supports at least the sole and is integrally formed of a non-foamed resin,
A loop-shaped mainframe that is long back and forth along the sole from at least the radius to the vicinity of the distal head of the metatarsal bone,
An outer frame disposed on the outer periphery of the main frame along the inner and outer sides of the foot;
A plurality of connecting frames constructed in a loop of the loop-shaped main frame and connecting the main frames in the width direction;
A shoe frame device in which a plurality of hoisting frames which are provided so as to wind from the main frame toward the outer frame and which connect between the main frame and the outer frame are integrally formed. 2. The main frame according to claim 1, wherein the average value of the ratio of the thickness to the width of the surface along the surface of the sole is set to 0.3 to 2.0, and the average cross-sectional area of each main frame is 5 mm. frame apparatus of shoes that have been set to ^{2 ~30mm 2.} In claim 1 or 2 ,
A shoe frame device in which each frame is arranged such that two of the plurality of connecting frames and a part of the main frame form a substantially triangular shape. 3. The shoe according to claim 1, wherein each of the frames is arranged such that two of the plurality of hoisting frames and a part of the main frame and the outer frame form a substantially square shape. Frame device. In any one of claims 1 to 4, wherein which the main frame is provided toward the toe from the MP joint, the main frame to each other in the width direction at generally along site in said metatarsal distal caput A shoe frame apparatus in which a connecting horizontal bar and a vertical frame extending forward from the horizontal bar at a substantially right and left center of the main frame are further integrally formed. In Claim 1, 2, or 4 , the outer frame is inclined upward as it goes rearward on the inside and outside of the foot,
A shoe frame device further comprising a counter frame extending forward and backward between the outer frame and the main frame and intersecting the hoisting frame on the inner and outer sides of the ribs. In claim 1, 2 or 4, the frame device of shoes the outer frame is formed in a loop shape on the outer periphery of the main frame. 5. The shoe frame device according to claim 1, 2, or 4 , wherein the outer frame is notched and discontinuous at a rear portion of the bag. In any one of claims 1 to 8, shoe frame device thin portion which enables the joining to the upper of the shoe is further formed integrally.

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