JP2018201759A - footwear - Google Patents

Abstract

To provide an article of footwear that can protect the instep of a user from impact regardless of a state of the ground.SOLUTION: The article of footwear includes: a toe protection core material 40 which is for protecting the upper side of a user's toes; and an instep protection core material 50 which is for protecting the upper side of the user's instep. A pair of left and right installation substrates 60 are further provided which are fixed to the sole 10 in a state projecting upward from both left and right sides of the sole 10. The left and right of the instep protection core material 50 are made elastic pieces attached in a slidable state respectively to the pair of left and right installation substrate 60. With an impact applied to the upper side of the instep protection core material 50, the instep protection core material 50 is made to sink to a prescribed depth by sliding relative to the installation substrate 60 while elastically being deformed.SELECTED DRAWING: Figure 6

Description

  The present invention relates to footwear including a toe protection core material for protecting the upper surface side of a toe in a wearer's foot and an upper protection core material for protecting the upper surface side of the upper in a wearer's foot.

  Shoes (so-called “safety shoes”) in which a toe protection core material is attached to a toe portion so that a foot is not injured even if a heavy object falls on the foot are known. In this type of safety shoes, there have already been proposed ones that are provided with an instep protection core so that not only the toes but also the instep can be protected. In many cases, the upper protective core material is attached to an existing shoe later (hereinafter, sometimes referred to as an “attachable upper protective core material”).

  For example, Patent Document 1 describes a core member (see reference numeral “1” in FIG. 2 of the same document) that is curved so as to follow the shape of the upper part of a shoe. The core member of Patent Document 1 passes through a string through a through hole (see reference numeral “31a” in FIG. 3 of the same document) provided in the core member, and ties the string to a shoelace so that the shoe is a ready-made shoe. (See paragraph 0009 of the same document). When the core member of Patent Literature 1 receives an impact, the lower end edge of the leg portion (see reference numeral “12” in FIG. 5 of the same literature) is grounded, and the curved portion is a shoe. By being kept away from the instep portion, the instep of the wearer's foot is protected (see paragraph 0017 of the same document).

JP 2003-0470502 A

  However, like the core member of Patent Document 1, the mounting-type upper protective core material has a drawback that it requires time and effort. In addition to being determined by the shoe user, whether or not it is attached to the appropriate place on the shoe by an appropriate method is attached to the appropriate place in the appropriate place. Even if it is, the position is difficult to stabilize. For this reason, there is a possibility that the desired position on the instep of the wearer cannot be sufficiently protected with the mountable upper protective core material. Further, as in the core member of Patent Document 1, in the instep protective core material that protects the instep by being grounded when receiving an impact, when the ground is in a soft state, the grounded instep protective core There is a possibility that the material will sink into the ground and sink further, and the impact applied to the upper surface side of the upper protective core material may be applied to the instep of the wearer's foot.

The present invention has been made to solve the above problems,
[1] No effort is required to mount the upper protective core.
[2] The upper protective core material is not easily displaced from an appropriate position, and a desired position on the instep of the wearer can be appropriately protected from an impact.
[3] Regardless of the state of the ground, the instep of the wearer can be protected from impact.
It provides footwear having the characteristics described above.

The above issues
A toe protection core material for protecting the upper surface side of the wearer's toe; and
An upper protective core material for protecting the upper surface side of the wearer's upper,
Footwear with
A pair of left and right mounting bases fixed to the shoe sole in a state of protruding upward from the left and right sides of the shoe sole;
The upper protective core material is attached in a state in which the left and right sides are slidable with respect to a pair of left and right attachment bases,
When an impact is applied to the upper surface side of the upper protective core material (hereinafter, sometimes referred to as “when an impact is applied”), the upper protective core material slides with respect to the mounting base and wearers' feet. It is solved by providing footwear characterized by absorbing the impact by sinking to a predetermined depth that does not squeeze the upper of the back, and allowing the impact to be received by the shoe sole via the mounting base .

  In the footwear of the present invention, an instep protective core material is attached in advance to an attachment base fixed to a shoe sole. For this reason, not only does it take effort to mount the upper protective core, but the upper protective core is kept in an appropriate position, and the desired position on the instep of the wearer can be properly protected from impact. It is possible. Further, the footwear of the present invention has a structure in which an impact applied to the upper surface side of the upper protective core material is received by the shoe sole via the mounting base. Therefore, in the footwear of the present invention, even if the shoe sole sinks with respect to the ground when an impact is applied, the upper protective core material can be maintained at a height that does not press the wearer's foot. It has become. Therefore, it is possible to protect the instep of the wearer from impact regardless of the state of the ground. Furthermore, in the footwear of the present invention, the impact applied to the upper surface side of the upper protective core material can be absorbed by the upper protective core material sliding downward. The impact absorbing action by the sliding of the upper protective core material can be further enhanced if at least one of the upper protective core material or the mounting base is formed of an elastically deformable material (elastic piece such as a leaf spring). In addition, if the upper protective core material and the mounting base are formed of a material that can be elastically deformed, it is possible to elastically return the upper protective core material that has been slid downward by receiving an impact to the upper initial position.

In the footwear of the present invention, the structure that regulates the sinking of the upper protective core material at the time of applying an impact at the predetermined depth is not particularly limited,
Each of the upper protection core material and the pair of left and right mounting bases is provided with a regulating contact portion,
When the upper protective core material slides with respect to the mounting base and sinks to the predetermined depth, the restriction contact portion on the upper protective core side and the restriction contact portion on the mounting base side come into contact with each other. It is preferable that the upper protective core material does not sink further.
This makes it possible to regulate the sinking of the upper protective core material when applying an impact with a simple structure.

In this case,
A pair of left and right guide grooves are provided on the lower surface side of the upper protective core material,
By inserting the upper end of the left mounting base into the left guide groove and inserting the upper end of the right mounting base into the right guide groove, the upper protective core can be slid relative to the pair of left and right mounting bases. In a state,
The inner wall surface on the back side of the guide groove becomes a contact part for regulation on the upper protective core side,
It is more preferable that the front end surface of the mounting base be a regulating contact portion on the mounting base.
This makes it possible to more reliably regulate the sinking of the upper protective core material at the time of applying the impact at the predetermined depth.

In the footwear of the present invention,
The upper protection core material is provided on the upper side of the upper,
Even when the upper protection core material sinks to the predetermined depth where the restriction contact portion on the upper protection core material side and the restriction contact portion on the mounting base side contact, the lower surface of the upper protection core material It is preferable to form a gap between the upper surface of the upper.
As a result, the impact applied to the upper surface side of the upper protective core material can be further prevented from being transmitted to the instep of the wearer's foot, and the instep of the wearer's foot can be more reliably protected.

  In the footwear of the present invention, only one upper protective core material may be provided. However, if it is intended to protect a wide area of the instep of the wearer's foot with one upper protective core, it is necessary to secure a large area for the upper protective core. If the area of the instep protective core material is widened, the bending operation of the toes during walking or the like will be disturbed by the instep protective core material, which may make it difficult for the wearer of the footwear to bend the toes. For this reason, it is preferable that the upper protective core material is provided by being divided into a plurality of parts. In addition to being able to protect a wide area of the instep of the wearer while reducing the area of each individual upper protective core, this allows one upper protective core to be used as another upper protective core. It is also possible to displace it. For this reason, it is possible to make it easier for the wearer of the footwear to bend the toe by preventing the upper protective core material from interfering with the bending operation of the toe.

More specifically,
Mounting base
A pair of left and right front mounting bases;
Consists of a pair of left and right rear mounting bases arranged on the rear side of the front mounting base,
Instep protective core
A front upper protective core attached to the front mounting base;
Consists of a rear upper protective core attached to the rear mounting base,
It is preferable that the front edge portion of the rear upper protective core material overlaps the upper surface side of the rear edge portion of the front upper protective core material.

  As a result, the upper protective core material is divided into a plurality of parts so that the above-mentioned effects can be achieved, while one upper protective core material (front upper protective core material) and another upper protective core material (rear) It becomes possible to protect the boundary portion with the side shell protection core material. In addition, each of the upper protection core materials (front upper protection core material and rear upper protection core material) divided into a plurality of pieces is kept at appropriate positions, and the desired position on the instep of the wearer is impacted. It is also possible to protect it appropriately.

As described above, according to the present invention,
[1] No effort is required to mount the upper protective core.
[2] The upper protective core material is not easily displaced from an appropriate position, and a desired position on the instep of the wearer can be appropriately protected from an impact.
[3] Regardless of the state of the ground, the instep of the wearer can be protected from impact.
It becomes possible to provide footwear having the characteristics described above.

It is the figure which looked at the footwear which concerns on this invention from the side, Comprising: It is the figure which showed the state when the impact is not applied to the upper surface side of the upper protection core material. It is sectional drawing which showed the state which cut | disconnected the footwear of FIG. 1 by the AA surface in the same figure. It is sectional drawing which showed the state which cut | disconnected the upper protection core material and attachment base | substrate in the footwear of FIG. 1 by the BB surface in FIG. It is the figure which looked at the footwear which concerns on this invention from the side, Comprising: It is the figure which showed the state when bending a toe. It is the figure which looked at the footwear which concerns on this invention from the side, Comprising: It is the figure which showed the state when an impact was applied to the upper surface side of the upper protection core material. It is sectional drawing which showed the state which cut | disconnected the footwear of FIG. 5 by CC plane in the figure.

  Preferred embodiments of footwear according to the present invention will be described more specifically with reference to the drawings. Although there are footwear for right foot and right footwear, for the convenience of explanation, only the left footwear will be described below, and the description for right footwear will be omitted. The footwear for the right foot has substantially the same structure as the footwear for the left foot except that the footwear for the right foot is opposite to the left footwear. For this reason, the configuration described for the footwear for the left foot can also be adopted for the footwear for the right foot.

  FIG. 1 is a side view of footwear according to the present invention. FIG. 2 is a cross-sectional view showing a state in which the footwear of FIG. 1 is cut along an AA plane in the same figure. 3 is a cross-sectional view showing a state in which the upper protective core member 50 and the mounting base 60 in the footwear of FIG. 1 are cut along the BB plane in FIG. 1 to 3 show the state when no impact is applied to the upper surface side of the upper protective core member 50 (when no impact is applied).

  As shown in FIGS. 1 and 2, the footwear of the present invention includes a shoe sole 10, a toe protection core material 40, an upper protection core material 50, and a pair of left and right mounting bases 60 (left side mounting base 60L and FIG. 2). The footwear 20 and the insole 30 are further provided in the footwear of the present embodiment. Of each member constituting the footwear of the present embodiment, the shoe sole 10, the upper 20 and the insole 30 are the same as those provided for general footwear. Therefore, in the following, the toe protection core material 40, the upper protection core material 50, and the mounting base 60 will be mainly described.

[Toe protection core]
The toe protection core material 40 serves to protect the upper surface side of the wearer's toe, and is usually formed of a hard member such as metal or hard resin. In the case where the toe protection core material 40 is formed of a resin, a fiber reinforced resin including a reinforced fiber such as carbon fiber, glass fiber, or metal fiber may be used. The form of the toe protection core material 40 is not particularly limited as long as the upper surface side of the toe can be protected from impact, but in the footwear of the present embodiment, the toe protection core material 40 is connected to the upper surface, front surface, left side surface of the toe. And it forms in the curved cup shape which can cover and protect the right side surface in the shape of a continuous surface. When the upper 20 is provided as in the footwear of the present embodiment (in this specification, not only the upper part of the foot but also the part covering the toe or the like is also called “the upper”), the toe protection core The material 40 may be provided on either the outer side (upper surface side) or the inner side (lower surface side) of the upper 20. In the footwear of this embodiment, the toe protection core material 40 is attached to the inside of the upper 20 so that the toe protection core material 40 is not visible from the outside of the footwear.

[Back protection core]
The instep protective core member 50 is for protecting the upper surface side of the instep of the wearer's foot. The upper protective core member 50 is formed of a hard member (including a member having elasticity) such as metal or hard resin. When the upper protective core material 50 is formed of a resin, a fiber reinforced resin containing reinforcing fibers such as carbon fibers, glass fibers, and metal fibers can be used. When the upper protective core member 50 is formed of an elastic member (an elastic piece such as a leaf spring), the upper protective core member 50 is elastically supported with respect to the mounting base 60, and the impact absorbing action during the sliding is further enhanced. It becomes possible. Further, after the impact is not applied to the upper surface side of the upper protective core member 50, the upper protective core member 50 can be elastically returned to the upper initial position. For this reason, also in the footwear of this embodiment, the upper protective core material 50 is formed of a member having elasticity.

  The form of the upper protective core member 50 is not particularly limited as long as the upper surface side of the upper part of the foot can be protected from an impact, but in the footwear of the present embodiment, the upper protective core member 50 is configured as shown in FIG. Yes. That is, as shown in FIG. 2, the upper protective core member 50 is convex upward so that the shape of the cross section perpendicular to the front-rear direction follows the curved shape of the upper surface of the instep (top 20). It is formed in the shape of a curved plate. Thus, it is possible to make the upper protective core material 50 easy to withstand an impact from above by curving the upper protective core material 50 so as to be convex upward. In the footwear of the present invention, as will be described later, when the upper protective core member 50 is elastically deformed when an impact is applied to the upper surface side of the upper protective core member 50 (when an impact is applied), the upper protective core member 50 is By curving so that it protrudes upward, the upper protection core material 50 at the time of applying an impact can be stably elastically deformed in a form that easily absorbs the impact (a form that collapses up and down and expands to the left and right). Is possible. A gap may be provided between the front edge of the upper protective core member 50 and the rear edge of the toe protective core member 40. However, in the footwear of this embodiment, the front edge portion of the upper protective core member 50 (The front edge portion of the front upper protective core material 50 </ b> F) overlaps the upper side of the rear edge portion of the toe protective core material 40. Thereby, it is possible to protect continuously the part from a toe of a wearer's foot to an instep.

  The upper and lower protection core members 50 are attached to the left and right sides of a pair of left and right mounting bases 60 described later in a slidable state. The structure by which the upper protective core member 50 is attached to the attachment base 60 in a slidable state is not particularly limited. In the footwear of the present embodiment, as shown in FIG. 2, on the lower surface side of the left end portion and the right end portion of the upper protective core material body 51 (the portion curved so as to protrude upward on the upper protective core material 50), A pair of left and right mounting bases 60 are attached to the upper end sides of the pair of left and right guide members 52 provided along the longitudinal direction (left and right direction) of the upper protective core body 51.

As shown in FIG. 3, the guide member 52 has a guide groove 52a. The guide piece portion 62 of the mounting base 60 is inserted into the guide groove 52a. Thereby, the left part and the right part of the guide member 52 (the upper protective core member 50) are attached to the attachment base 60 in a slidable state. The edges of the lower opening of the guide groove 52a, and provided with a pawl portion 52a ₁ projecting inwardly, guide pieces 62 so as not to fall off from the guide groove 52a on the lower surface of the upper protective core 50 ing. The guide groove 52a can be provided in a tunnel shape by completely closing the lower opening.

  Here, simply by inserting the guide piece portion 62 into the guide groove 52a of the guide member 52, when the upper protective core member 50 is lifted upward with respect to the mounting base 60, the guide piece portion 62 is completely removed from the guide groove 52a. There is a risk of getting out. In particular, as will be described later, when the mounting base 60 is formed of an elastic material, the guide piece portion 62 may easily come out of the guide groove 52a. For this reason, the guide member 52 and the guide piece portion 62 may be provided with a retaining means for preventing the guide piece portion 62 from coming out of the guide groove 52a.

By the way, the back side of the guide groove 52a may be in a released (opened) state (a state where the guide piece portion 62 protrudes from the back side of the guide member 52). However, in the footwear of this embodiment, as shown in FIG. 2, the back side (upper end side) of the guide groove 52a is closed by the back side inner wall surface 52a ₂ , and as shown in FIG. and the instep protective core 50 when sunk to a predetermined depth with respect to the mounting base 60, so that the distal end surface 62a of the guide piece 62 in the mounting base 60 abuts against the rear side inner wall 52a ₂ of the guide groove 52a I have to.

In other words, the inner wall surface 52a ₂ on the back side of the guide groove 52a and the front end surface 62a of the guide piece portion 62 are in contact with each other so that the upper protective core member 50 is not further depressed. The parts function as the parts α and β. Of the restricting contact portions α, β, the restricting contact portion α (the inner wall surface 52a ₂ on the back side of the guide groove 52a) is provided on the upper protective core member 50 side. The restriction contact portion β (the front end surface 62a of the guide piece 62) is a “mounting base side regulating contact portion” provided on the mounting base 60 side. .

  Only one instep protective core member 50 may be provided for footwear on one side. However, if it is intended to protect a wide area of the instep of the wearer with one upper protective core member 50, it is necessary to secure a large area for the upper protective core main body 51 (the upper protective core member 50). There is a possibility that it is difficult for the wearer to bend the toes. For this reason, in the footwear of this embodiment, as shown in FIG. 1, the upper protective core member 50 is divided into a plurality of parts.

  Specifically, the upper protection core material 50 is composed of a front upper protection core material 50F arranged on the front side and a rear upper protection core material 50B arranged on the rear side of the front upper protection core material 50F. Yes. For this reason, the mounting base 60 described later is also composed of a front mounting base 60F disposed on the front side and a rear mounting base 60B disposed on the rear side of the front mounting base 60F. The front upper protective core member 50F is attached to the front attachment base 60F, and the rear upper protective core member 50B is attached to the rear attachment base 60B. The front edge portion of the rear upper protective core material 50B overlaps the upper surface side of the rear edge portion of the front upper protective core material 50F.

  In addition to being able to protect a wide range of the back of the wearer's foot while suppressing the area of the upper protective core material body 51 of the individual upper protective core materials 50F and 50B. As shown in FIG. 4, it is possible to displace one upper protective core material 50F with respect to another upper protective core material 50B. For this reason, it is also possible that the upper protective core member 50 does not interfere with the bending operation of the toe and makes it easier for the wearer of the footwear to bend the toe. FIG. 4 is a view of the footwear according to the present invention as viewed from the side, and shows a state where the foot tip is bent.

  In the footwear of the present embodiment, two upper protective core members 50 are provided as described above, but the number of upper protective core members 50 can be further increased. In this case, it is preferable that the respective upper protective core members 50 are independently provided for different sets of mounting bases 60. However, if the number of the upper protective core members 50 is increased too much, the structure of the footwear becomes complicated, which not only increases the weight of the footwear but also may increase the manufacturing cost. For this reason, it is preferable to suppress the number of the upper protective core members 50 provided for the footwear on one side to 5 or less. The number of the upper protective core members 50 is more preferably suppressed to 4 or less, and more preferably 3 or less.

[Mounting base]
As already described, the mounting base 60 is for mounting the upper protective core member 50 in a slidable state. By this mounting base 60, the upper protective core member 50 is supported at an appropriate position so that the upper protective core member 50 is not displaced from the position where it should originally be. For this reason, the predetermined part of a wearer's foot | leg can be reliably protected with the upper protection core material 50. FIG. In addition, since the upper protective core member 50 is attached in advance to the mounting base 60, the user of the footwear does not need to manually attach the upper protective core member 50 to the footwear. Yes.

  As shown in FIG. 2, the mounting base 60 includes a left mounting base 60 </ b> L that is fixed to the shoe sole 10 so as to protrude upward from the left side of the shoe sole 10, and a shoe that protrudes upward from the right side of the shoe sole 10. The right mounting base 60R is fixed to the bottom 10. In the footwear of this embodiment, as described above, the upper protective core material 50 is composed of the front upper protective core material 50F and the rear upper protective core material 50B. Is also composed of a front mounting base 60F to which the front upper protective core member 50F is attached and a rear mounting base 60B to which the rear upper protective core member 50B is attached.

  The form of each attachment base 60 is not particularly limited as long as the upper protective core member 50 attached thereto can be supported in a slidable manner and can be fixed at a desired position on the shoe sole 10. In the footwear of the present embodiment, as shown in FIG. 2, the mounting base 60 includes a fixed base 61 that is fixed to the shoe sole 10 and a band plate that protrudes upward from the outer end of the fixed base 61. The guide piece 62 is shaped like a cross section having a substantially “L” shape. The guide piece portion 62 is curved so as to follow the curvature of the upper protective core material 50 (the upper protective core material main body 51), and can smoothly slide in the guide groove 52a of the guide member 52.

  The sliding direction of the upper protective core member 50 varies depending on the direction of the guide piece 62. In this regard, if the forward inclination angle θ (FIG. 1) of the guide piece 62 when the footwear is viewed from the side is too small (too close to 0 °), the upper protective core member 50 performs the bending operation of the toes. It becomes easy to disturb. For this reason, it is preferable that the forward inclination angle θ of the guide piece 62 is 5 ° or more. The forward tilt angle θ of the guide piece portion 62 is more preferably 10 ° or more, and further preferably 20 ° or more. However, if the forward tilt angle θ of the guide piece portion 62 is too large (too close to 90 °), when the impact is applied to the upper surface side of the upper protective core member 50, the guide piece portion 62 loses the impact. There is a possibility that the front edge of the upper protective core member 50 may fall forward and press the wearer's foot or toe. For this reason, it is preferable that the forward inclination angle θ of the guide piece 62 is 60 ° or less. The forward tilt angle θ of the guide piece 62 is more preferably 50 ° or less, and further preferably 45 ° or less.

  The length of the guide piece 62 (the length along the sliding direction of the upper protective core 50 from the lower end to the upper end of the guide piece 62. The same applies hereinafter) is not particularly limited, but if it is too short, Not only is it difficult to secure the sliding margin of the protective core member 50, but there is also a risk that the upper protective core member 50 may easily fall off from the mounting base 60. For this reason, the length of the guide piece 62 is normally secured to 10 mm or more. The length of the guide piece 62 is preferably 20 mm or more, and more preferably 30 mm or more. On the other hand, if the guide piece 62 is made too long, the upper protective core member 50 inevitably needs to be lengthened, and the upper protective core member 50 must be formed so as to be largely convex upward. For this reason, not only the weight and cost of footwear increase, but the appearance of the footwear may be deteriorated or the comfort of the footwear may be reduced. Therefore, the length of the guide piece portion 62 is usually 100 mm or less. The length of the guide piece 62 is preferably 90 mm or less, and more preferably 80 mm or less.

  The fixing base 61 of the mounting base 60 is normally in a state of being fixed in advance with respect to the shoe sole 10. In the footwear of this embodiment, as shown in FIG. 2, the fixed base 61 is provided in a state of being embedded in the shoe sole 10. Such fixing is performed by placing the fixed base 61 in a mold for forming the shoe sole 10 and molding the shoe sole 10, and fixing the base to the material (rubber, elastic resin, etc.) forming the shoe sole 10. When the 61 is integrated, or the shoe sole 10 has a multilayer structure, and one layer and another layer are integrated with each other by welding or the like, a fixed base is provided between the one layer and the other layer. This can be realized by inserting 61 or the like. In this case, if the fixed base 61 is provided with a convex portion or a concave portion (not shown), the fixed base 61 can be prevented from falling off the shoe sole 10. In addition, the fixing base 61 may be fixed by bolting or the like to the back side of the shoe sole 10 (such as a portion where no anti-slip protrusion is provided).

  The material of the mounting base 60 is not particularly limited, but is usually formed of a hard member (including a member having elasticity) such as a metal or a hard resin. When the attachment base 60 is formed of a resin, it can be a fiber reinforced resin containing reinforcing fibers such as carbon fibers, glass fibers, and metal fibers. When the mounting base 60 (especially the guide piece 62) is formed of an elastic member (elastic piece such as a leaf spring), the mounting base 60 can elastically support the upper protective core member 50, thereby protecting the upper. It is possible to further enhance the impact absorbing action when the core member 50 is slid. It is also possible to easily return the upper protective core member 50 to the upper initial position after the impact is not applied to the upper surface side of the upper protective core member 50. For this reason, also in the footwear of this embodiment, the attachment base 60 is formed of a member having elasticity.

[Function of footwear]
Since the footwear of this embodiment is provided with the toe protection core material 40 and the upper protection core material 50 as described above, heavy objects fall on the upper surface side of the toe or the upper surface side of the upper. Even so, the wearer's foot can be protected. In particular, the upper protection core 50 made of an elastic piece is attached to the attachment base 60 (in the footwear of the present embodiment, the attachment base 60 is also an elastic piece) in a slidable state, so that the upper protection is provided. When an impact is applied to the upper surface side of the core member 50, the impact is suitably absorbed, and the wearer's foot can be more reliably protected.

  That is, in the footwear of the present embodiment, when the impact is not applied to the upper protective core member 50, the upper protective core member 50 is higher in the mounting base 60 as shown in FIGS. The width W of the gap γ (FIG. 2) between the lower surface of the upper protective core member 50 and the upper surface of the upper 20 is wide. On the other hand, when the impact is applied to the upper surface side of the upper protective core member 50, as shown in FIGS. 5 and 6, the upper protective core member 50 is crushed up and down and spreads left and right. While being elastically deformed, the mounting base 60 is elastically deformed so that the guide piece 62 falls inward, and the upper protective core member 50 slides and sinks with respect to the mounting base member 60, and the upper protective core member 50 is sunk. The applied impact can be absorbed or alleviated by the elastic force of the upper protective core member 50 and the mounting base 60. FIG. 5 is a view of the footwear according to the present invention as viewed from the side, and shows a state when an impact is applied to the upper surface side of the upper protective core member 50 (when an impact is applied). FIG. 6 is a cross-sectional view showing a state in which the footwear of FIG. 5 is cut along a CC plane in the same figure.

In the footwear of the present embodiment, as already described, the upper end side (tip end side) of the guide piece portion 62 of the mounting base 60 is inserted into the guide groove 52a of the guide member 52 of the upper protective core member 50. In this state, when the upper protective core member 50 sinks with respect to the mounting base 60, the tip of the guide piece 62 moves to the back side (back side in the sliding direction) of the guide groove 52a. When the upper protective core member 50 sinks to a predetermined depth, as shown in FIG. 6, the distal end surface 62a of the guide piece 62 (the regulating contact portion β on the mounting base 60 side) is located on the inner side of the guide groove 52a. It contacts the inner wall surface 52a _{2 so} that the upper protective core member 50 cannot sink further.

The distal end surface 62a of the guide piece 62 (contact portion for regulating the mounting base 60 side beta) is, when in contact with the rear side inner wall 52a ₂ of the guide groove 52a is to be the lower surface of the upper protective core 50 instep 20 Although the width W (FIG. 6) of the gap γ with the upper surface of the substrate is smaller than the width W (FIG. 2) of the gap γ when no impact is applied, it still does not become 0 (zero). . For this reason, an impact applied to the upper surface side of the upper protective core member 50 is not transmitted to the upper 20, and the wearer's foot on the lower side of the upper 20 can be protected from the impact. Further, the impact applied to the upper surface side of the upper protective core member 50 is transmitted to the shoe sole 10 via the mounting base 60, not the ground 100 (FIG. 5). For this reason, the footwear of the present embodiment reliably regulates the sinking of the upper protective core material 50 at the position shown in FIG. 6 even when the ground 100 is soft, such as the ground 100 is muddy. It is possible to protect. For this reason, in the footwear of this embodiment, not only when no impact is applied as shown in FIG. 1 but also when the impact is applied as shown in FIG. It has become.

  The lower surface of the upper protective core member 50 when the upper protective core member 50 sinks to the bottom dead center position shown in FIG. 6 (the position where the restricting contact portion α and the restricting contact portion β contact). The width W of the gap γ with the upper surface (design upper surface) of the upper 20 is not particularly limited as long as it is larger than 0 mm. However, if the width W of the gap γ is too small, there is a possibility that an impact is applied to the wearer's foot when the wearer's foot is instep. For this reason, the width W of the gap γ when the upper protective core member 50 is at the bottom dead center position (the width at the portion where the upper 20 is the highest. The same applies hereinafter) is usually 1 mm or more. The width W of the gap γ when the upper protective core member 50 is at the bottom dead center position is preferably 3 mm or more, and more preferably 5 mm or more.

  On the other hand, the upper limit of the width W of the gap γ when the upper protective core member 50 is at the bottom dead center position is not particularly limited. However, if the width W is too wide, it is necessary to support the upper protective core material 50 at a high position even when no impact is applied (FIG. 1), which not only deteriorates the appearance of the footwear but also makes the footwear comfortable to wear. May decrease. Further, from the viewpoint of preventing the impact applied to the upper surface side of the upper protective core member 50 from being transmitted to the upper shell 20, it makes little sense. For this reason, the width W of the gap γ when the upper protective core member 50 is at the bottom dead center position is preferably 30 mm or less, more preferably 20 mm or less, and even more preferably 15 mm or less. .

DESCRIPTION OF SYMBOLS 10 Shoe sole 20 Upper 30 Insole 40 Toe protection core material 50 Upper protection core material 50F Front upper protection core material 50B Rear upper protection core material 51 Upper protection core material main body 52 Guide member 52a Guide groove 52a ₁ nail part 52a ₂ Back side inner wall surface 60 Mounting base 60F Front side mounting base 60B Rear side mounting base 61 Fixed base 62 Guide piece 62a Front end surface 60L Left side mounting base 60R Right side mounting base 100 Ground α Contacting part β Base-side regulating contact part γ Gap between the lower surface of the upper protective core and the upper surface of the upper

Claims (5)

A toe protection core material for protecting the upper surface side of the wearer's toe; and
An upper protective core material for protecting the upper surface side of the wearer's upper,
Footwear with
A pair of left and right mounting bases fixed to the shoe sole in a state of protruding upward from the left and right sides of the shoe sole;
The upper protective core material is attached in a state in which the left and right sides are slidable with respect to a pair of left and right attachment bases,
When an impact is applied to the upper surface of the upper protective core material, the upper protective core material slides against the mounting base and sinks to a predetermined depth that does not compress the wearer's foot, thereby absorbing the impact. In addition, the footwear is characterized in that the impact is received by the sole through the mounting base.
Each of the upper protection core material and the pair of left and right mounting bases is provided with a restricting contact portion,
When the upper protective core material slides with respect to the mounting base and sinks to the predetermined depth, the restriction contact portion on the upper protective core side and the restriction contact portion on the mounting base side come into contact with each other. The footwear according to claim 1, wherein the upper protective core material does not sink further.
The upper protective core is provided on the upper side of the upper,
Even when the upper protection core material sinks to the predetermined depth where the restriction contact portion on the upper protection core material side and the restriction contact portion on the mounting base side contact, the lower surface of the upper protection core material The footwear according to claim 2, wherein a gap is formed between the upper surface of the upper and the upper.
A pair of left and right guide grooves are provided on the lower surface side of the upper protective core material,
By inserting the upper end side of the left mounting base into the left guide groove and inserting the upper end side of the right mounting base into the right guide groove, the upper protective core can slide relative to the pair of left and right mounting bases. Provided in the state,
The inner wall surface on the back side of the guide groove becomes a contact part for regulation on the upper protective core side,
The footwear according to claim 2 or 3, wherein the front end surface of the mounting base is a restricting contact portion on the mounting base.
The mounting base is
A pair of left and right front mounting bases;
It is composed of a pair of left and right rear mounting bases arranged on the rear side of the front mounting base,
Instep protective core material
A front upper protective core attached to the front mounting base;
Consists of a rear upper protective core attached to the rear mounting base,
The footwear according to any one of claims 1 to 4, wherein a front edge portion of the rear upper protective core material overlaps an upper surface side of a rear edge portion of the front upper protective core material.

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