SHOE WITH ELASTIC MEANS
The present invention relates to a shoe with elastic means, and provides a shoe with elastic means, which can be manufactured with ease and has superior elastic performance. To accomplish the object of the present invention, a shoe is provided comprising: an elastic cap made of a material having an elasticity higher than that of the peripheral area around the elastic cap; a conical groove formed in the elastic cap; and a spring which is formed separately from the elastic cap, and which has a conical shape which is the same shape as the conical groove so that the spring can be inserted into said conical groove. Accordingly, the present invention can manufacture a shoe embedded with both a spring and an elastic block in a further easier manner, and can manufacture a superior quality shoe with no defects.
The present invention relates to a shoe with elastic members, in more detail a shoe provided with conical springs in conical seating groove in the bottom.
BACKGROUND ARTRecently, various shoes with springs in the bottom to protect the wearers' joints such that they feel less fatigue by absorbing shock applied to the shoes while improving the cushion function have been developed.
A shoe with a spring around the heel which is a typical shoe in those shoes is showing in
A shoe shown in
However, the elastic body may have elastic unbalance when the spring is biased to one side due to injection pressure or problems, such as support defect, in the manufacturing process, when the elastic block where the spring is embedded is formed. Therefore, it is required to accurately adjust the position of the spring such that the spring is positioned at the right center in manufacturing the elastic block, for example, by injection molding, in order to preclude the problems, which makes the manufacturing process difficult. Further, since the elastic body is usually made of a porous material to embed the spring in the elastic body, it is difficult to use a transparent material, such that it is difficult to implement a configuration that allows the spring to be seen from the outside.
DISCLOSURE Technical ProblemThe present invention has been made in an effort to solve the problems and it is an object of the present invention to provide a shoe that is equipped with springs having excellent elastic performance and easily manufactured.
Further, it is another object of the present invention to provide a shoe having a structure that allows the spring to be seen from the outside.
Technical SolutionIn order to achieve the objects of the present invention, a shoe is provided with an elastic member in the bottom, in which the elastic member includes an elastic cap made of a material that is more elastic than the other portions around where the elastic cap is installed, a conical seating groove that is formed in the elastic cap, and a spring that is formed separately from the elastic cap in a conical shape the same as the conical shape of the seating groove and inserted in the seating groove of the elastic cap.
The shoe according to the present invention is a shoe with a heel, and the heel may have a space therein, such that a sub-heel that moves inward/outward from the bottom of the heel may be inserted in the space and the elastic member that is compressed by the sub-heel may be positioned on the sub-heel.
According to another aspect of the present invention, a shoe is provided with an elastic member in the bottom, in which the elastic member includes conical seating grooves formed in any one of an insole, a midsole, and an outsole of the shoe, and a spring formed in a conical shape the same as the conical shape of the seating grooves to be seated in the seating grooves and inserted in the seating grooves.
In the shoe according to the present invention, it is preferable that an air channel that connects the inside of the shoe where a fool is positioned, or the outside of the shoe with the seating grooves is formed in the bottom of the shoe.
Further, it is preferable that in the shoe a transparent window is formed such that the spring in the seating grooves is seen from the outside of the shoe.
Advantageous EffectThe present invention described above has the following effects.
First, since the elastic cap and the spring are separately manufactured and assembled, the relative positions of the elastic cap and the spring are naturally determined only by simply assembling the elastic cap with the spring. That is, it is possible to manufacture with accurate and uniform quality without unbalance of the elastic force in the elastic body due to non-matching of the relative position of the spring in an elastic member, which is generated in the related art, as shown in
Second, the present invention can achieve free elastic deformation and increase the deformed amount and the shock-absorbing amount, because the wound portions of the spring do no interfere with each other and an elastic block body is not inserted between the wound portions. Therefore, it is possible to increase the deformed amount and the shock-absorbing amount even if the height of the spring is reduced, such that the present invention can be used in the types of shoes which has a relatively thin bottom.
Third, since the elastic spring and the elastic cap are simultaneously compressed and restored when load or shock is applied, the restoring force and restoring speed are more excellent than when only an elastic block is used, and the elastic cap prevents the elastic spring from shaking, such that wearing sensation of the shoe can be improved.
Fourth, since the spring is not embedded in the elastic cap, it is possible to check the embedded state of the spring by forming a transparent portion at a position where the spring can be seen, such as the bottom of the shoe, such that it is easy for the manufacturer to find defects in manufacturing, and for the customers to ascertain the elastic performance of the shoe.
- 10: the uppers of lather
- 22, 32, 42: seating groove
- 31: space
- 36: air hole
- 41: elastic cap
- 50, 50′: outsole
- 52: connecting groove
- 61: communicating space
- 63: support plate
- 20, 20′: insole
- 30: midsole
- 34: air channel
- 40: elastic member
- 43: elastic spring
- 51: transparent window
- 60: heel
- 62: sub-heel
Hereinafter, the configuration and operation of the present invention are described in detail with reference to the accompanying drawings.
Although the elastic spring is formed in a conical shape, it may be formed in any shape, such as a circular cone, a rectangular cone, and a polygonal cone, but the circular cone would be the most preferable. The reason that the spring is formed in a conical shape is because a cylindrical spring is limited in the compression distance because the upper and lower wound portions of the spring contact or hit against each other when the spring is compressed; however, the upper and lower wound portions of the conical spring do not interfere with each other even if the spring is maximally compressed, such that the spring can be maximally compressed until the upper and lower ends are positioned close to the same height, and the spring can be installed even if the space where the spring is installed has a small height. The wound portion of the spring is wound in a cylindrical or conical shape and implies one wound shape formed every time it is wound in manufacturing the spring; therefore, it a cylindrical spring is formed by winding ten times, it has ten wound portions.
The elastic cap 41 may be made of well-known elastic materials in a hexahedron or a cylinder and has the seating groove 42 where the elastic spring 43 is seated, such that the elastic spring is seated therein.
The midsole is exemplified for the position of the inserted elastic cap in
Meanwhile, support plates slight wider than the elastic cap 41 may be attached to the top and bottom of the elastic cap 41 such that the load is uniformly distributed in the wide area. Further, when the conical spring fitted in the elastic cap is embedded in the bottom of the shoe, it is preferable that a transparent window made of a transparent material may be partially formed such that the spring can be seen from the outside.
In the shoe with the embedded conical spring 43 fitted in the elastic cap 41, as described above, the elastic spring 43 and the elastic cap 41 are simultaneously compressed when load from the foot or shock is applied, and they are simultaneously restored. Therefore, the restoring force and restoring speed are more excellent than block-shaped elastic bodies and the elastic cap 41 prevents the elastic spring 43 from shaking, such that it is possible to improve wearing sensation. Further, the elastic cap 41 and the elastic spring 43 simultaneously receive the load, deform in the same expansion and contraction amount, and carry the load, even if strong shock or load is applied, such that it is possible to achieve the same shock-absorbing performance as a large-capacity spring, with a small-capacity spring.
In the embodiments described above, when the elastic body is formed by inserting the elastic spring in the elastic cap 41, or the seating portions 22, 32 of the insole, midsole, or outsole which functions as the elastic cap, the elastic cap and the elastic spring simultaneously receive the load and deform in the same expansion and contraction amount, even if strong shock or load is applied, such that it is possible to achieve the same shock-absorbing performance as a large spring, with a small spring, as compared with when only an elastic spring is installed, and smooth shock-absorbing becomes possible due to the operation of the spring with excellent restoring force and restoring speed, as compared with when only an elastic body is installed. Further, a specific member for fixing the spring is not needed and the parts can be simply assembled without a specific work for accurately adjusting the position of the spring in manufacturing, such that it is possible to easily manufacture the shoe with a simple configuration.
Meanwhile, when the elastic spring 43 is embedded in the seating grooves 22, 32, 42, as described above, the spaces in the seating grooves 22, 32, 42 are filled with air and all of the sides are sealed to function as an air cushion in compression, such that it is required to discharge the compressed air therein to the outside in compression to achieve more smooth elastic operation.
The air channel 34 functions as an intake channel of air when the seating groove 42 compressed is restored, in addition to the exhaust channel of air, and the air channel 34 is connected with the inside of the shoe where the sole of a foot is positioned by an air hole 36 and contributes to air flow, such that it can be expected to remove moisture or smell. Further, it is possible to continuously supply fresh air into the shoe by forming a specific air channel connecting the outside of the shoe with the seating grooves 22, 32, 42, in addition to the air channel connected with the inside of the shoe, and installing a check valve in the air channels such that air can be supplied or discharged only in one direction in the shoe, when the air is pumped by expansion and contraction of the seating grooves.
Referring to
A step is formed in the communicating space 61 to hold a support plate 63 of a sub-heel 62 and the sub-heel 62 is inserted in the lower portion of the communicating space 61 to move in/out from the bottom of the heel of the shoe. The support plate 63 wider than the sub-heel is disposed on the top of the sub-heel 62 to be held on the step. The elastic member according to the present invention is disposed on the support plate 63 of the sub-heel 62. The elastic member includes an elastic cap 41 made of a material that is more elastic than the heel 60, and a conical spring 43 inserted in a conical seating groove 42 formed in the elastic cap 41.
Meanwhile, it is preferable to form an air hole in the insole 20′ to allow air to flow in the communicating space 61. Further, it is preferable to firmly fix the insole 20′ on the outsole 50′ and the heel 60′ of the shoe with an adhesive, with the elastic cover covered, because the insole 20′ should be fixed to be able to receive the elastic force of the elastic member.
When a wearer walks with the shoes according to the embodiment on, the sub-heel 62 comes in contact to the ground and moves inside, such that as the sub-heel 62 moves inside, the elastic member of the present invention is compressed between the sub-heel 62 and the sole of the foot of the wearer. Further, when the sub-heel 62 gets off the ground, the compressed elastic member pushes the sub-heel 62, such that the sub-heel 62 protrudes outside again. It is possible to absorb shock in walking by the in-out movement of the sub-heel 62 and the elastic operation of the elastic member.
On the other hand,
The embodiments described above are examples of the spirit of the present invention and it should be understood that various modifications can be achieved by those skilled in the art within the spirit of the present invention.
INDUSTRIAL APPLICABILITYThe present invention described above can be widely used in manufacturing shoes, because an elastic member formed by combining a block-shaped elastic body with a conical spring in the bottom of the shoes to improve elastic performance and make it easy to manufacture the shoes.
Claims
1. A shoe with an elastic member in the bottom, wherein the elastic member includes an elastic cap made of a material that is more elastic than the other portions around where the elastic cap is installed, a conical seating groove that is formed in the elastic cap, and a spring that is formed separately from the elastic cap in a conical shape the same as the conical shape of the seating groove and inserted in the seating groove of the elastic cap.
2. The shoe with an elastic member according to claim 1, wherein the shoe is a shoe with a heel, the heel has a space therein, such that a sub-heel that moves inward/outward from the bottom of the heel is inserted in the space and the elastic member that is compressed by the sub-heel is positioned on the sub-heel.
3. A shoe with an elastic member in the bottom, wherein the elastic member includes conical seating grooves formed in any one of an insole, a midsole, and an outsole of the shoe, and a spring formed in a conical shape the same as the conical shape of the seating grooves to be seated in the seating grooves, and inserted in the seating grooves.
4. The shoe with an elastic member according to claim 1, wherein an air channel that connects the inside of the shoe where a foot is positioned, or the outside of the shoe with the seating grooves is formed in the bottom of the shoe.
5. The shoe with an elastic member according to claim 1, wherein a transparent window is formed such that the spring in the seating grooves is seen from the outside of the shoe.
6. The shoe with an elastic member according to claim 2, wherein an air channel that connects the inside of the shoe where a foot is positioned, or the outside of the shoe with the seating grooves is formed in the bottom of the shoe.
7. The shoe with an elastic member according to claim 3, wherein an air channel that connects the inside of the shoe where a foot is positioned, or the outside of the shoe with the seating grooves is formed in the bottom of the shoe.
8. The shoe with an elastic member according to claim 2, wherein a transparent window is formed such that the spring in the seating grooves is seen from the outside of the shoe.
9. The shoe with an elastic member according to claim 3, wherein a transparent window is formed such that the spring in the seating grooves is seen from the outside of the shoe.
Type: Application
Filed: Sep 16, 2009
Publication Date: May 12, 2011
Inventor: Jong Ha Kim (Busan)
Application Number: 12/995,180