CN110680044A

CN110680044A - Antiskid unit and functional shoe comprising same

Info

Publication number: CN110680044A
Application number: CN201910606316.8A
Authority: CN
Inventors: 朴洪顺
Original assignee: Hong Soon Park
Current assignee: Hong Soon Park
Priority date: 2018-07-05
Filing date: 2019-07-05
Publication date: 2020-01-14
Also published as: US20200008536A1; EP3590378A1; EP3590378B1; KR101973324B1

Abstract

The present invention provides an anti-slip unit included in a sole of a shoe to provide an anti-slip function to the shoe, comprising: a body including an inner space and a nail through-hole connecting the inner space and an outside; a nail provided in the inner space so as to be movable along the nail through-hole; and a movable member provided in the internal space so as to be movable and which allows the nail to move. The movable member moves between a first position in which at least a portion of the nail is concealed within the internal space and a second position in which the nail is exposed outside the body and maintains the exposed state of the nail. The nail may be hidden in or exposed outside the above-constructed antiskid unit of the present disclosure, and the user may simply and conveniently manipulate the antiskid unit.

Description

Antiskid unit and functional shoe comprising same

Technical Field

The present disclosure relates to an anti-slip unit for providing an anti-slip function to a shoe, and a functional shoe including the same.

Background

Shoes were originally intended to protect the foot from external impact or foreign matter, but special functions were added to the shoes. Alternatively, in many cases, the shoe is provided with a special function from the manufacturing stage. For example, mountain climbers install crampons onto their shoes to prevent slippage.

The crampon may be integral with the shoe or the crampon may be arranged to be detachable from the shoe. However, the crampon-integrated shoe has a problem in that the user experiences a significantly deteriorated comfort when walking on a flat ground, and the detachable crampon has a problem in that the user has an inconvenience of attaching the crampon to the shoe and then detaching the crampon from the shoe when the slippery portion is replaced with the flat ground.

Disclosure of Invention

The present disclosure has been made to solve the above-mentioned problems occurring in the prior art, while well maintaining the advantages of the prior art.

An aspect of the present disclosure provides a functional shoe or an anti-slip unit for a functional shoe, so that a user can conveniently switch between a crampon function and a normal shoe function without taking off the shoe.

Another aspect of the present disclosure provides a structure for improving durability of an anti-slip unit of a functional shoe, which can be switched between a crampon function and a normal shoe function.

The technical problems to be solved by the present disclosure are not limited to the above-mentioned problems, and other technical problems not mentioned herein will be clearly understood from the following description by those skilled in the art to which the present disclosure pertains.

According to an aspect of the present disclosure, an anti-slip unit included in a sole of a shoe to provide an anti-slip function to the shoe includes: a body including an inner space and a nail through-hole connecting the inner space and an outside; a nail provided in the inner space so as to be movable along the nail through-hole; and a movable member provided in the internal space so as to be movable and which allows the nail to move.

The movable member moves between a first position in which at least a portion of the nail is concealed within the internal space and a second position in which the nail is exposed outside the body and maintains the exposed state of the nail.

The anti-skid unit may further include a manipulation member that moves the movable member from the first position to the second position or from the second position to the first position.

According to another aspect of the present disclosure, a functional footwear for preventing slipping includes: a sole having an interior space; a nail provided in an interior of the sole so as to be movable in a vertical direction along a nail through-hole formed in the sole to connect the interior and exterior of the sole; and a movable member provided in the interior of the sole so as to be movable and which allows the peg to move in a vertical direction.

The movable member moves between a first position in which at least a portion of the studs is concealed within the interior of the sole and a second position in which the studs are exposed outside the sole and remain exposed.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a side view illustrating a functional footwear according to an embodiment of the present disclosure;

FIG. 2 is a bottom view showing the functional footwear of FIG. 1;

fig. 3 is a side sectional view showing an anti-slip unit of the functional footwear of fig. 1;

FIG. 4 is an exploded view of the antiskid unit of FIG. 3;

fig. 5 is a bottom view showing a movable member of the antiskid unit of fig. 4;

fig. 6 is a plan view showing a movable member of the antiskid unit of fig. 4; and

fig. 7 is a view showing some components of the antiskid unit of fig. 4.

Detailed Description

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the exemplary drawings. In adding reference numerals to components of each figure, it should be noted that the same or equivalent components are denoted by the same numerals even when displayed on other figures. Furthermore, in describing embodiments of the present disclosure, detailed descriptions of well-known features or functions are excluded so as to not unnecessarily obscure the subject matter of the present disclosure.

Hereinafter, the terms "upper, lower, front, rear, left and right" may be defined as shown in the drawings. However, these are merely for convenience of description, and the terms "upper, lower, front, rear, left, and right" may be defined differently from those shown in the drawings.

Fig. 1 is a side view illustrating a functional footwear according to an embodiment of the present disclosure, and fig. 2 is a bottom view illustrating the functional footwear of fig. 1.

The functional footwear according to this embodiment includes a sole 1 and an antiskid unit 10 coupled to the sole 1 so as to be detachable. The antiskid unit 10 includes a plurality of nails 100 movable therein.

The shoe sole 1 may have a predetermined thickness and may include an inner space in which the non-slip unit 10 is received. The shoe sole 1 may include a slip prevention unit receiving recess in which the slip prevention unit 10 is received, and the slip prevention unit receiving recess may be concavely formed from the bottom of the shoe sole 1 toward the inside of the shoe sole 1.

The sole 1 is provided at a lower portion of the shoe contacting with the ground. Upon contact with the ground, the sole 1 relieves the impact (the impact experienced by the user) and increases the friction with the ground to prevent slipping.

The antiskid unit 10 may be installed at the front and rear of the shoe sole 1. The nail 100 movably installed in the antiskid unit 10 may be hidden inside the antiskid unit 10 or may be exposed outside the antiskid unit 10.

In the related art, shoes include nails to prevent slipping, but have a problem in that the nails are in contact with a flat ground when a user walks on the flat ground, causing the user to feel discomfort. Meanwhile, there are crampons that can be attached to and detached from the shoes in the related art, but there is a problem in that a user has an inconvenience of attaching and then detaching the crampon to and from the shoes each time.

The functional footwear according to this embodiment is characterized in that the spikes for preventing slipping are protruded from the sole or hidden in the sole. More specifically, in order to enable a user to conveniently expose or hide the peg, the functional shoe according to this embodiment includes a movable member mounted in a sole to be rotatable and a peg vertically moved by rotation of the movable member. Accordingly, the user can conveniently expose or hide the nail by rotating the movable member using the manipulation member, and thus the user's convenience can be improved.

Hereinafter, the antiskid unit according to this embodiment will be described in detail.

Fig. 3 is a side sectional view showing an anti-slip unit of the functional footwear of fig. 1. Fig. 4 is an exploded view of the antiskid unit of fig. 3. Fig. 5 is a bottom view showing a movable member of the antiskid unit of fig. 4. Fig. 6 is a plan view showing a movable member of the antiskid unit of fig. 4.

The antiskid unit 10 may include a nail 100, a body 200, a movable member 300, an elastic member 400, a manipulation member 500, and a fastening screw 600.

The spikes 100 may each include a pointed protrusion at a lower end thereof and may provide a slip-resistant function to the shoe. The nail 100 may be vertically movable, and may be hidden in the body 200 or may protrude out of the body 200.

A plurality of staples 100 may be provided. Referring to fig. 5, a plurality of staples 100 may be arranged at predetermined angular intervals with respect to the rotation center of the movable member 300.

Referring to fig. 2, some of the plurality of nails 100 may be disposed on a concentric circle away from the center of the antiskid unit 10, and other nails 100 may be disposed on a concentric circle near the center of the antiskid unit 10. The plurality of staples 100 may be disposed on a concentric circle centered on the rotational axis of the movable member 300.

The plurality of nails 100 may improve the anti-slip effect.

Each nail 100 may include a nail body 110 and a nail head 120.

The nail body 110 may have a cylindrical shape with a predetermined diameter, and may include a tapered protrusion at a lower end thereof. Therefore, when the user wearing the shoe walks in a state where the nail 100 protrudes out of the main body 200, the pointed protrusions may contact the ground to increase friction with the ground, thereby preventing slipping.

The head 120 may be connected to the upper end of the nail body 110, and the head 120 may have a larger diameter than the nail body 110. That is, a step may be formed between the nail head 120 and the nail body 110 due to the difference in diameter.

The nail head 120 may have a larger diameter than the nail through-hole 230 of the body 200, which will be described below. Accordingly, the nail head 120 can prevent the corresponding nail 100 from being removed from the non-slip unit 10, and can limit the length of the nail 100 protruding.

The edge of the stud 120 adjacent to the movable member 300 may be rounded. Therefore, it is possible to prevent the pin head 120 from being worn or damaged by contact with the movable member 300, and the pin head 120 can be smoothly moved when the pin 100 is moved while being pressed by the rotation of the movable member 300.

Alternatively, the edge of the nail head 120 is chamfered at an angle corresponding to the slope of the inclined surface, which will be described below, so that the movement of the nail 100 can be smoothly guided when the movable member 300 rotates.

The nail 100 may be formed of a wear resistant material and may be machined to have a smooth surface. Therefore, a frictional force that may be generated when the nail 100 is in contact with the movable member 300 or the body 200 may be reduced, and the nail 100 may be prevented from being damaged.

The body 200 may have an internal space S in which the movable member 300 is accommodated. The body 200 may include a body base 210 and a movable member receiving portion 220.

Referring to fig. 3 and 4, a peripheral portion of an upper surface of the body base 210 may protrude upward to form a movable member receiving part 220.

The movable member receiving part 220 may be formed in a donutshape (donutshape) on the upper surface of the body base part 210. An outer circumferential surface of the movable member receiving part 220 may be connected with an outer circumferential surface of the body base 210, and an inner circumferential surface of the movable member receiving part 220 may form an inner space S.

The movable member receiving part 220 may have the same outer diameter as the body base 210 to form a side surface of the body 200.

The body base 210 may have a nail through-hole 230 formed therein to connect the inner space S with the outside of the antiskid unit 10.

The nail through-hole 230 may be vertically formed through the body base 210 to correspond to the diameter of the nail body 110, and the nail through-hole 230 may guide vertical movement of the nail 100 along the inner circumferential surface of the nail through-hole 230.

The same number of nail through holes 230 as the nails 100 may be formed.

The nail through-holes 230 may be formed in the body base 210 to correspond to positions where the plurality of nails 100 are disposed.

Referring to fig. 2, a plurality of nail through-holes 230 may be formed at predetermined angular intervals. Some of the plurality of nail through-holes 230 may be disposed on a concentric circle away from the center of the body 200, and other nail through-holes 230 may be disposed on a concentric circle close to the center of the body 200. The plurality of nail through-holes 230 may be located on a concentric circle centering on the rotational axis of the movable member 300.

The elastic member receiving recess 240 may be concavely formed on an inner surface facing a hiding direction (an upper direction) among inner surfaces of the body 200 defining the inner space S along a circumference of the nail through-hole 230.

That is, the elastic member receiving recess 240 may be concavely formed on the upper surface of the body base 210 along the circumference of the nail through-hole 230. Due to the difference in diameter between the elastic member receiving recess 240 and the nail through-hole 230, a step may be formed between the elastic member receiving recess 240 and the nail through-hole 230.

The elastic member 400 may be received in the elastic member receiving recess 240. The elastic member 400 may be inserted and fixed in the elastic member receiving recess 240, and the elastic member 400 may apply elastic force to the nail 100 to move the nail 100 in the hiding direction (upper direction). For example, the elastic member 400 may be implemented with a spring.

The elastic members 400 may be disposed in the plurality of elastic member receiving recesses 240, respectively. The elastic member 400 may be a spring.

A manipulation member through hole 250 through which the manipulation member 500 passes may be vertically formed through the body 200. That is, the manipulation member through hole 250 may be vertically formed through the body base 210, and the manipulation member through hole 250 may connect the inner space S and the outside of the body 200.

The manipulation member through hole 250 may have a diameter corresponding to a diameter of the manipulation member body 510, which will be described below, such that the manipulation member body 510 is rotatable in a state of being inserted into the manipulation member through hole 250.

A thread for coupling the body 200 to the shoe sole 1 may be formed on a side surface of the body 200. External threads may be formed on the outer circumferential surface of the main body 200, and internal threads may be formed on the inner circumferential surface of the non-slip unit receiving recess of the shoe sole 1. The external thread may be fastened to the internal thread.

For example, an external thread 260 may be formed on a side surface of the main body 200, and an internal thread recess (not shown) may be formed on an inner circumferential surface of the non-slip unit receiving recess of the shoe sole 1.

Therefore, the antiskid unit 10 is detachably coupled to the shoe sole 1, and thus can be removed from the shoe sole 1 in an easy and simple manner when necessary.

The movable member 300 may be disposed in the inner space S of the main body 200 so as to be movable. The movable member 300 may move to allow the staples 100 to move.

The movable member 300 is movable between a first position in which at least a portion of the nail 100 is hidden in the internal space S, and a second position in which the nail 100 is exposed outside the body 200 and the exposed state of the nail 100 is maintained.

A direction in which the nail 100 is hidden in the internal space S may be defined as a hiding direction (an upper direction in the drawing), and a direction in which the nail 100 is exposed out of the body 200 may be defined as an exposing direction (a lower direction in the drawing). The exposure direction is opposite to the concealment direction.

In the first position, the movable member 300 allows the nail 100 to move in the concealing direction, or in order to maintain the concealed state of the nail 100, the movable member 300 does not allow the nail 100, which has moved in the concealing direction, to move in the exposing direction.

While moving from the first position to the second position, the movable member 300 allows or forces the staple 100 to move in the exposure direction.

In the second position, the movable member 300 does not allow the nail 100, which has moved in the exposing direction, to move in the concealing direction so as to maintain the exposed state of the nail 100.

The movable member 300 may include a non-contact region and a contact region. The non-contact region may be located above the staple 100 in the concealed direction relative to the second position, and although the staple 100 moves in the concealed direction, the non-contact region may not contact the staple 100 while the staple 100 moves at least a predetermined distance. The contact area may be in contact with the nail 100 that has moved in the exposure direction.

The first position of the non-contact area on the nail 100 may be defined as a position that allows the nail 100 to pass through the non-contact area in the concealing direction.

The second position of the contact area on the nail 100 may be defined as a position where the nail 100 having moved in the exposing direction is not allowed to move in the concealing direction due to contact with the contact area.

The movable member 300 may contact the staples 100 while moving from the first position to the second position, and the movable member 300 may press and move the staples 100 in the exposure direction while contacting the staples 100.

The structure of the movable member 300 for performing the above-described functions will be described in detail below.

The movable member 300 may be formed in a disc shape and may be disposed in the inner space S so as to be rotatable about an axis oriented in a direction corresponding to the vertical direction. The movable member 300 may be rotated between a first position and a second position.

Here, the direction corresponding to the vertical direction may be defined as a direction including the vertical direction or a direction inclined at a predetermined angle with respect to the vertical direction but may be approximately recognized as the vertical direction.

Referring to fig. 4 to 6, the movable member 300 may include nail-receiving

recesses

310 and 330 and

inclined portions

320 and 340.

The nail-receiving

recesses

310 and 330 may be concavely formed upward from the bottom of the movable member 300. The diameter of the staple-receiving

recesses

310 and 330 can be greater than the outer diameter of the staple body 110, and at least a portion of the staple 100 can be received in the staple-receiving

recesses

310 and 330.

When the staple 100 is located in the staple-receiving

pockets

310 and 330, at least a portion of the staple 100 may be concealed in the interior space S. That is, when the movable member 300 is positioned such that the staples 100 are located in the

staple receiving recesses

310 and 330, the staples 100 may be allowed to move in the concealed direction.

Non-contact areas (which are not in contact with the staple 100 while the staple 100 is moving at least a predetermined distance, although the staple 100 is moving in the concealed direction) may be defined as the areas provided by the staple-receiving

pockets

310 and 330.

The first position allowing the nail 100 to move through the non-contact region in the concealing direction (upper direction in the drawing) may be defined as a position allowing the

nail receiving recesses

310 and 330 of the movable member 300 and the movable member 300 with the nail 100 vertically on the same line. Alternatively, the first position may be defined as a position where the movable member 300 allows the staples 100 to be located in the

staple receiving recesses

310 and 330.

Meanwhile, when the movable member 300 is located at the first position, the nail 100 may be forced to move in the hiding direction by the elastic member 400. Accordingly, the peg 100 may move in the concealing direction to a position where the movement of the peg 100 is restricted by the movable member 300 or the shoe sole 1, and the peg 100 may be concealed in the body 200.

Regions adjacent to the nail-receiving

recesses

310 and 330 may be recessed to form

slopes

320 and 340 on a surface of the movable member 300 facing the exposure direction (downward direction in the drawing).

The

inclined portions

320 and 340 may include first

inclined surfaces

321 and 341, and the first

inclined surfaces

321 and 341 contact the nail 100 while the movable member 300 moves from the first position to the second position.

The

inclined portions

320 and 340 may include first seating surfaces 322 and 342 on which the nail 100 is seated when the movable member 300 is located at the second position.

That is, the second position may be defined as the position of the movable member 300 where the staples 100 are located on the first seating surfaces 322 and 342.

The

inclined parts

320 and 340 may include second

inclined surfaces

323 and 343, the second

inclined surfaces

323 and 343 being in contact with the staples 100 while the movable member 300 moves from the second position to the third position, and the second

inclined surfaces

323 and 343 moving the staples 100 in the exposing direction further than when the movable member 300 is in the second position.

The

inclined portions

320 and 340 may include second seating surfaces 324 and 344 on which the nail 100 is seated when the movable member 300 is located at the third position.

That is, the third position may be defined as a position of the movable member 300 in which the nail 100 is located on the second seating surfaces 324 and 344.

The contact area that prevents the nail 100, which has moved in the exposing direction, from moving in the concealing direction may be defined as the area provided by the

inclined portions

320 and 340.

When the movable member 300 located at the first position is rotated toward the second position, the nail 100 is in contact with the first

inclined surfaces

321 and 341. The movable member 300 moves the nail 100 in the exposing direction (downward direction in the drawing) by the pressure according to the contact. At this time, the nail 100 moves in the exposing direction while moving along the first

inclined surfaces

321 and 341.

When the movable member 300 is moved to the second position, the nail 100 is seated on the first seating surfaces 322 and 342. At this time, the first seating surfaces 322 and 342 prevent the nail 100 from moving in the concealing direction.

When the movable member 300 rotates from the second position toward the third position, the nail 100 comes into contact with the second

inclined surfaces

323 and 343. The movable member 300 further moves the nail 100 in the exposing direction (lower direction in the drawing) by the pressure according to the contact. At this time, the staples 100 are further moved in the exposing direction while being moved along the second

inclined surfaces

323 and 343.

When the movable member 300 is moved to the third position, the nail 100 is seated on the second seating surfaces 324 and 344, and the second seating surfaces 324 and 344 prevent the nail 100 from moving in the concealing direction.

That is, when the movable member 300 is located at the first position, the nail 100 is allowed to be hidden in the internal space S. At this time, it is not necessary to hide the entire nail 100 in the main body 200. However, the nail 100 only needs to be further concealed in the body 200 than when the movable member 300 is located in the second position or the third position.

When the movable member 300 is located at the second position, the nail 100 is maintained in the exposed state, and the

inclined portions

320 and 340, more specifically, the first seating surfaces 322 and 342 prevent the nail 100 from moving in the concealing direction.

When the movable member 300 is located at the third position, the nail 100 is maintained in the exposed state, and the

inclined portions

320 and 340, more specifically, the second seating surfaces 324 and 344 prevent the nail 100 from moving in the concealing direction. At this time, the length of the nail 100 protruding out of the body 200 is longer than the length of the nail 100 protruding out of the body 200 when the movable member 300 is located at the second position.

The staple-receiving

recesses

310 and 330 may be concavely formed at a higher position than the first seating surfaces 332 and 342, and thus may allow all or part of the staple 100 to be hidden in the inner space S of the main body 200.

In contrast, when the movable member 300 moves from the third position to the second position, the nail 100 is allowed to move a predetermined distance in the concealment direction. At this time, the nail 100 may be forced to move in the hiding direction by the elastic member 400. The predetermined distance that allows the staple 100 to move in the concealed direction may correspond to the difference in height between the first seating surfaces 322 and 342 and the second seating surfaces 324 and 344.

When the movable member 300 is in the second position, the first seating surfaces 322 and 342 prevent the nail 100 from moving in the concealing direction.

The above method can be applied even when the movable member 300 moves from the second position to the first position.

Although it has been illustrated in this embodiment that the seating surface is implemented in two steps, the seating surface may be implemented in more steps. By increasing the number of steps implementing the seating surface, the length of the nail 100 protruding out of the body 200 can be more finely adjusted.

Although it has been illustrated in this embodiment that the

nail receiving recesses

310 and 330 of the movable member 300 are concavely formed upward from the bottom of the movable member 300, nail holes may be vertically formed through the movable member 300. In this case, the movement of the studs 100 in the concealing direction can be restricted by the contact of the stud 120 with the inner surface of the sole 1 facing the non-slip unit 10 (which is coupled to the sole 1 of the shoe).

The movable member 300 configured as described above can adjust the length of the nail 100 protruding out of the body 200 step by step. Even when the nail 100 is located on the inclined surface, the length of the nail 100 protruding out of the body 200 can be changed. However, it is difficult to stably support the nail 100 so that the nail 100 does not move in the concealing direction. Since the seating surface is implemented in a plurality of steps, the nail 100 may be stably supported in a state of protruding out of the body 200 in various lengths.

Fig. 7 is a view showing some components of the antiskid unit of fig. 4, wherein fig. 7 shows movable members, manipulation members, and fastening screws among the components of the antiskid unit of fig. 4.

The manipulation member 500 may include a manipulation member body 510 and a manipulation member head 520.

The manipulation member body 510 may have a smooth outer circumferential surface, and the manipulation member body 510 may be rotated in a state of being inserted into the manipulation member through hole 250 of the body 200.

The manipulating member head 520 may be connected to a side of the manipulating member body 510 facing a hiding direction (an upper direction in the drawing). The manipulation member head 520 may be fixedly inserted into the manipulation member receiving hole 350 of the movable member 300. The manipulation member head 520 may have a recess at the center thereof, which is opened in the hiding direction and to which the fastening screw 600 is screwed.

An external thread may be formed on an outer circumferential surface of the manipulation member head 520, and an internal thread may be formed on an inner circumferential surface of the manipulation member receiving hole 350 of the movable member 300. The external thread may be fastened to the internal thread.

Referring to fig. 7, a manipulation member head external thread 521 may be formed on an outer circumferential surface of the manipulation member head 520, and a manipulation member receiving hole internal thread 351 may be formed on an inner circumferential surface of the manipulation member receiving hole 350.

An external thread may be formed on an outer circumferential surface of the fastening screw 600, and an internal thread may be formed on an inner circumferential surface of the manipulation member head recess 522 of the manipulation member head 520 into which the fastening screw 600 is inserted. The external thread may be fastened to the internal thread.

Referring to fig. 7, a fastening screw thread 611 may be formed on an outer circumferential surface of the fastening screw main body 610, and a manipulation member head internal thread 523 may be formed on an inner circumferential surface of the manipulation member head recess 522.

When the manipulation member 500 is screwed into the movable member 300, the manipulation member 500 may be released from the movable member 300 as the movable member 300 is repeatedly rotated in one direction and the opposite direction. To prevent this problem, a fastening screw 600 is additionally provided. The fastening screw 600 is screwed into the manipulation member head recess 522 of the manipulation member head 520 through the fastening screw recess 360 of the movable member 300. At this time, the fastening screw 600 may be screwed into the manipulation member head 520 in a direction opposite to the direction in which the manipulation member head 520 is screwed into the movable member 300, and thus the manipulation member 500 may be effectively prevented from being released from the movable member 300.

The manipulation member body 510 may have a wrench recess formed therein into which a wrench is inserted. The wrench recess may be opened in an exposing direction (downward direction in the drawing). The wrench recess may be implemented with a hexagonal recess 511.

The peg 100 of the above-configured antiskid unit 10 may be pushed by the movable member 300 to protrude out of the body 200, and when the force exerted on the peg 100 by the movable member 300 is released, the peg 100 may be hidden in the body 200 by the elastic member 400.

A user may insert an Allen wrench (Allen wrench) into the hexagonal recess 511 and may rotate the manipulation member 500 in one direction to rotate the movable member 300 in that direction, thereby allowing the nail 100 to protrude out of the main body 200. In contrast, by inserting an allen key into the hexagonal recess 511, the user can rotate the manipulation member 500 in the opposite direction to rotate the movable member 300 in the opposite direction, thereby allowing the nail 100 to be hidden in the main body 200. As described above, the user can expose or hide the nail 100 through a simple and convenient operation, so that the user's convenience can be improved.

Further, the manipulation member 500 and the movable member 300 are dually coupled to each other by tightening the screw 600, and thus the coupling force between the manipulation member 500 and the movable member 300 may be enhanced. Therefore, even if the user uses the antiskid unit 10 while repeatedly rotating the movable member 300 in one direction and the opposite direction, the antiskid unit 10 may have high durability to prevent the manipulation member 500 and the movable member 300 from being separated from each other.

According to the present disclosure, the nail is moved by movement of the movable member provided in the inner space of the main body so as to be movable, and the movable member is moved by using the manipulation member while the antiskid unit is not separated from the shoe. Accordingly, the antiskid unit of the above-described configuration of the present disclosure enables a user to conveniently switch between a crampon function and a normal shoe function without taking off the shoe.

In addition, according to the present disclosure, the movable member is disposed in the inner space of the body so as to be movable, and the nail is disposed in the inner space so as to be movable along the nail through-hole. Therefore, the antiskid unit can be protected from the outside of the shoe and can be structurally stable, and thus the durability of the antiskid unit can be improved.

In the foregoing, although the present disclosure has been described with reference to the exemplary embodiments and the accompanying drawings, the present disclosure is not limited thereto, but various modifications and changes may be made by those skilled in the art to which the present disclosure pertains without departing from the spirit and scope of the present disclosure claimed in the appended claims.

This application claims priority from korean patent application No.10-2018-0078083, filed on 5.7.2018 with the korean intellectual property office, the entire contents of which are incorporated herein by reference.

Claims

1. An anti-skid unit included in a sole of a shoe to provide an anti-skid function to the shoe, the anti-skid unit comprising:

a body including an inner space and a nail through-hole configured to connect the inner space and an outside;

a nail provided in the inner space so as to be movable along the nail through-hole; and

a movable member provided in the internal space so as to be movable, and configured to move to allow the staples to move,

wherein the movable member moves between a first position in which at least a portion of the nail is concealed in the internal space and a second position in which the nail is exposed outside the body and an exposed state of the nail is maintained.

2. The antiskid unit according to claim 1, wherein a direction in which the nail is hidden in the internal space is referred to as a hiding direction, a direction in which the nail is exposed out of the main body is referred to as an exposing direction, the exposing direction is opposite to the hiding direction, and

wherein the movable member:

in the first position, the staples are allowed to move in the concealing direction or the staples which have moved in the concealing direction are not allowed to move in the exposing direction so as to maintain the concealed state of the staples;

allowing or forcing the staple to move in the exposure direction when the movable member moves from the first position to the second position; and is

In the second position, the nail having moved in the exposing direction is not allowed to move in the concealing direction so as to maintain the exposed state of the nail.

3. The non-slip unit according to claim 1, wherein a direction in which the nail is hidden in the inner space is referred to as a hiding direction, a direction in which the nail is exposed out of the main body is referred to as an exposing direction, and the exposing direction is opposite to the hiding direction,

wherein the movable member includes a non-contact region and a contact region, the non-contact region being located above the nail in the concealing direction with respect to the second position, and the non-contact region being configured not to contact the nail while the nail moves at least a predetermined distance despite the nail moving in the concealing direction, the contact region being configured to contact the nail that has moved in the exposing direction,

wherein the first position of the non-contact region on the staple is a position that allows the staple to move through the non-contact region in the concealment direction, and

wherein the second position where the contact region is located on the nail is a position where the nail having moved in the exposing direction is not allowed to move in the concealing direction due to contact with the contact region.

4. The antiskid unit according to claim 3, wherein the movable member is in contact with the nail while moving from the first position to the second position, and when the movable member is in contact with the nail, the movable member moves the nail in the exposure direction by a pressure according to the contact.

5. The antiskid unit according to claim 4, wherein an inclined surface for forcing the nail to move in the exposure direction is formed on at least one of a portion of the nail and a portion of the movable member that contact each other while the movable member moves from the first position to the second position, and

wherein the inclined surface is formed such that a portion of the force exerted by the movable member on the staple during contact is applied in an exposure direction.

6. The antiskid unit according to claim 4, wherein the movable member has a nail-receiving recess formed on one surface facing the exposing direction, and the nail is received in the nail-receiving recess when the nail is moved in the concealing direction,

wherein a region adjacent to the nail-receiving recess is recessed to form an inclined portion, and

wherein the inclined portion includes:

a first inclined surface configured to contact the staple while the movable member moves from the first position to the second position;

a first seating surface on which the spike seats when the movable member is in the second position;

a second inclined surface configured to contact the staples while the movable member moves from the second position to the third position, and configured to move the staples further in the exposure direction than when the movable member is in the second position; and

a second seating surface on which the staple sits when the movable member is in the third position.

7. The non-slip unit according to claim 3, wherein an elastic member is provided between the main body and the nail to force the nail to move in the concealment direction when the movable member is in the first position, and

wherein an elastic member receiving recess is concavely formed along a periphery of the nail through-hole on an inner surface facing a hiding direction among inner surfaces of the body defining the inner space, and the elastic member is disposed in the elastic member receiving recess.

8. The antiskid unit of claim 1, further comprising:

a manipulation member configured to move the movable member from the first position to the second position or from the second position to the first position.

9. The antiskid unit according to claim 1, wherein the movable member having a disc shape is provided in the inner space so as to be rotatable about an axis oriented in a direction corresponding to a vertical direction, and the movable member is rotated between the first position and the second position.

10. The non-slip unit of claim 9, further comprising:

a manipulation member configured to pass through the body and be combined with the movable member; and

a fastening screw screwed into the manipulation member and configured to couple the movable member and the manipulation member to each other.

11. The antiskid unit of claim 10, wherein the movable member has: a manipulation member receiving hole formed at a center of a surface facing an exposure direction, the center being a rotation center of the movable member; and a fastening screw recess formed on a surface facing a concealing direction to be connected to the manipulating member receiving hole, the fastening screw being inserted into the fastening screw recess,

wherein the main body has a manipulation member through-hole through which the manipulation member passes, the through-hole being vertically formed through the main body, and

wherein the manipulation member comprises:

a manipulation member body mounted in the manipulation member through hole of the body so as to be rotatable; and

a manipulation member head connected to a side of the manipulation member body facing a concealment direction and fixedly inserted into the manipulation member receiving hole of the movable member, the manipulation member head having a recess in a center opened in the concealment direction, the fastening screw being screwed to the recess.

12. The antiskid unit according to claim 11, wherein the manipulation member body has a wrench recess into which a wrench is inserted, the wrench recess being opened in the exposure direction.

13. Functional footwear for preventing slipping, comprising:

a sole having a space therein;

a nail provided at an inner portion of the shoe sole so as to be movable in a vertical direction along a nail through-hole formed in the shoe sole to connect the inner and outer portions of the shoe sole; and

a movable member provided inside the sole so as to be movable and configured to move to allow the peg to move in a vertical direction,

wherein the movable member moves between a first position in which at least a portion of the studs is concealed within the interior of the sole and a second position in which the studs are exposed outside the sole and remain exposed.