JP2005131065A - Footwear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide footwear where stability at the time of landing is improved and smooth walking is promoted in the state of walking and running and a standing posture is stabilized in the state of upright standstill. <P>SOLUTION: The footwear 1 is provided with a heel 5. The rear end 9 of heel grounding of the heel is positioned at the intersection 12 of a perpendicular line 11 dropped perpendicularly from the heel bone lowest point 10 of the heel of the foot and a heel grounding surface 8. The longitudinal center axis 15 of the heel is designated to be coincident with a sole longitudinal axis 13 joining the intersection 12 with a second toe tip. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to footwear having a heel, and more particularly to a women's shoe that promotes stable and smooth walking on a heel in a running and walking state and improved standing stability in a standing still state. It is.

  First, the walking mechanism will be described. In normal adult walking, two longitudinal arches inside and outside along the longitudinal direction of the foot, that is, the medial arch from the radius to the head of the first metatarsal and the radius to the fifth metatarsal A lateral arch to the head of the foot, two lateral arches in the lateral direction of the foot, a first arch from the inner wedge bone to the tip of the cubic bone, and a head from the first metatarsal to the fifth It walks while absorbing the landing impact pressure due to the weight load at the second arch of the ball portion over the head of the metatarsal bone. In an upright stationary state, the human weight load is distributed and received mainly in the ribs, the mother heel and the small limbs in terms of the skeletal structure.

  In the walking process, the weight load is first applied to the back surface of the buttocks while rotating from the outside of the buttocks to the inside, and then forward from the back of the buttocks along the back of the buttocks in the longitudinal direction of the foot. The ball joint of the first finger is moved while being unrolled, and the foot of the fifth finger is turned back, that is, the back of the joint of the fifth metatarsal bone and the fifth proximal phalanx, and the foot is stepped strongly on the ground. While moving to the back of the joint, that is, to the joint back of the first metatarsal bone and the first proximal phalanx, stepping on the ground and moving, and then bending the first proximal phalanx and the first distal phalanx while pitching It is said to walk while repeating the process of grasping the ground with the back surface of the first distal phalanx (first finger) and kicking the ground with the first to fifth fingers, especially the first, second and third fingers. .

  In general, heels used for women's shoes are used in a variety of ways, from the set back heel type attached to the back of the hips to the classic Louis heel type with a large heel front and back. Those that are used without discrimination are used, and many of them give priority to productivity and fashionability. Since these conventional footwear are provided without considering the above walking mechanism, the landing is unstable and unsuitable for walking, which is not desirable for health. Also, since the heels of these women's shoes are oriented toward the third finger in line with the center line of the buttocks, there was a tendency for the weight-bearing center of gravity to be guided naturally along that and to walk on the outer crotch .

  In addition, regarding a shoe having a heel, as an object of excellent stability of weight support with little fatigue even when worn for a long time, a shoe sole that extends from the toe portion of the foot toward the arch portion according to Japanese Patent Laid-Open No. 7-155204 The rear end of the grounding part is positioned 1 cm to 4 cm closer to the hip part than the vertical line extending vertically from the heel part of the foot, and the shoe extends from the rear end of the shoe sole grounding part toward the rear end of the heel part. There has been proposed a shoe in which the inclination angle of the lower surface of the bottom rear portion is set to be equal to or less than the average inclination angle of the inclined portion formed on the inner bottom of the shoe.

  However, in this high heel shoe, the position of the ground contact part of the heel of the heel is set to the front from the position vertically lowered from the lowest point of the rib, and therefore, there is a sense of incongruity such as pushing up to the sole of the foot during walking. This causes a problem that smooth walking cannot be obtained. In the stationary state, the weight-bearing center of gravity of the heel part is applied closer to the heel than the rear end of the heel contact, so that there is a problem that the toe lifts and falls to the back.

With respect to other conventional women's shoes, the ground contact surface at the heel rear portion is cut obliquely according to Japanese Patent Laid-Open No. 2002-85110, and the front edge line of the heel cut surface is 2-10 with respect to the vertical line of the shoe sole center line. Even if there is a situation where a woman wearing heeled women's shoes has to run as a scene of commuting or work, the unnatural power is still in the scene. Therefore, it has been disclosed that it is possible to reduce the tension of legs and muscles and to run quickly. However, since this shoe sole is also a shoe sole in which the front edge line of the cut surface is inclined outward with respect to the normal line of the shoe sole center line, there is a tendency to encourage walking with the toes open, that is, walking with the O leg.
JP-A-7-155204 JP 2002-85110 A

  The problem to be solved is that, in footwear with heels, stable and smooth walking at the heel landing is not performed in walking and running states, and standing stability is not achieved in a standing still state. is there. In addition, the conventional footwear is that the pedestrian is unconsciously guided to the outer crotch walking, and normal walking is not performed.

  According to the present invention, in a footwear having a heel, the rear end of the heel contact with the heel is positioned at the intersection of a perpendicular line vertically from the lowest point of the rib of the foot heel and the heel contact surface, and the intersection A heel is provided such that the longitudinal center line of the heel coincides with the longitudinal axis of the sole connecting the tip of the second finger.

  The footwear of the present invention is such that the rear edge of the ground contact portion of the heel is positioned at the intersection of a perpendicular line vertically lowered from the lowest point of the rib and the ground contact surface of the heel, and the sole connecting the intersection and the tip of the second finger By providing the heel so that the longitudinal center line of the heel coincides with the vertical axis, the knee can be extended with the knee stretched while walking while the angle between the sole and the ground is reduced. Since the weight load directly applied to the lowest point of the rib can be received, there is an advantage that the landing stability is improved and smooth walking is performed.

  Even in a stationary state, since the ground contact rear edge of the heel coincides with a perpendicular line vertically lowered from the lowest point of the rib, the weight load applied to the hip is reliably supported by the ground contact rear edge of the heel, There is an advantage that the toe does not float and stability is achieved. Furthermore, the women's shoes of the present invention are guided in the direction of the second finger from the heel wearing point so that the center of gravity of the weight load can be stepped straight, and the outer leg walking is prevented unintentionally and normal walking is performed. The

  In the present invention, the purpose of improving stability and normal walking while walking and standing is simply realized by simply setting the heel mounting position regardless of the heel height.

  FIG. 1 is a side view showing a footwear according to Embodiment 1 of the present invention. 2 is a bottom view of the footwear shown in FIG. Also, 1 is footwear, 2 is a cover, 3 is a shoe sole, 4 is a sole body, 5 is a heel, 6 is a heel body, 7 is a bottom, 8 is a heel grounding surface, 9 is a trailing edge, and 10 is a rib , 11 is a perpendicular line, 12 is an intersection, 13 is a sole longitudinal axis, 14 is a conventional heel center line, 15 is a heel longitudinal center line, L is a foot length, and L1 is from the back end of the heel to the back of the heel The distance to the edge.

  As shown in FIG. 1, the footwear 1 of the present invention includes a heel cover 2 and a shoe sole 3, and the shoe sole 3 includes a shoe sole body 4 and a heel 5. Further, the heel 5 has a shape formed by a wide upper surface, a narrow lower surface, and an inclined surface connecting both surfaces thereof, and is constituted by a heel body 6 and a bottom portion 7. The heel body 6 is made of a hard material, and synthetic rubber or leather, synthetic resin, wood, light alloy, or a combination thereof is used. The bottom portion 7 is made of a material having a hardness lower than that of the heel body in order to absorb an impact applied to the foot.

  The heel 5 is arranged so that the rear edge 9 of the heel contact portion thereof is aligned with the intersection 12 of the vertical line 11 and the heel contact surface 8 that are vertically lowered from the lowest rib 10 of the foot. In this case, the lowest point 10 of the ribs of the foot was found to be at a position of 11% to 15% of the foot length (L) from the rear end of the foot as a result of the investigation. Accordingly, as shown in FIG. 2, the heel 5 can be disposed at the intersection 12 by setting the rear edge 9 to a position of 13% of the foot length (L), that is, the length to the heel (L1). . For example, when the foot length is 23 cm, the position is set to 23 cm × 0.13 = 2.99≈3 cm from the rear end of the foot (inner surface of the footwear).

  The heel 5 is attached to the sole body 4 with the longitudinal center line 15 of the heel aligned with the sole longitudinal axis 13 connecting the intersection 12 and the tip of the second finger. The sole vertical axis 13 corresponds to a position inclined about 7 to 14 degrees (θ) inward from the conventional heel center line 14.

  As the heel 5, a high heel having a heel height of 55 mm is used in the embodiment. However, even if the middle heel and the low heel are arranged as described above, the same operation and effect can be obtained. . Further, the heel 5 of the present invention is prepared by separately preparing the sole body 4 and bonded and molded. However, as another embodiment, the sole 5 may be integrally molded with a molding material such as natural rubber, synthetic rubber or thermoplastic resin. good. The type of heel used in the footwear of the present invention is French heel, Continental heel, wedge heel or the like, and the shape of the special side is not limited.

  The women's shoes of the present invention have a walking action in which the ground contact trailing edge 9 of the heel lands on the perpendicular line 11 at the lowest point 10 of the rib on which the weight load (W) is applied from the above heel structure, whereby the knee is extended. Since walking on the ground is performed, the angle between the sole and the ground when the heel is touched is reduced, so that an excessive load is not applied to the foot, and stability at the time of landing is improved and smooth normal walking is possible. Further, the footwear of the present invention can improve the standing stability because the weight load applied to the buttocks is surely supported by the heel contact trailing edge 9 even when standing upright. As a result of performing a sensory test while wearing the women's shoes of the present invention, 5 out of 5 obtained an evaluation that the stability in walking and stationary was good.

  In the present invention, women's shoes are given as examples, but the present invention can also be applied to uses such as men's shoes and walking shoes.

It is a side view of the footwear which shows the structure of this invention. FIG. 2 is a bottom view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Footwear 2 Cover 3 Shoe sole 4 Shoe sole main body 5 Heel 6 Heel main body 7 Bottom part 8 Heel grounding surface 9 Trailing edge 10 Bottom point of rib 11 Perpendicular 12 Intersection 13 Foot vertical axis 14 Conventional heel center line 15 Heel Longitudinal center line L Foot length L1 Distance from heel rear edge to heel rear edge

Claims (1)

  In footwear with a heel, the rear end of the heel touching the heel is positioned at the intersection of a perpendicular line from the lowest point of the heel of the foot and the heel touching surface, and the crossing point and the tip of the second finger Footwear characterized by providing a heel so that the longitudinal center line of the heel coincides with the vertical axis of the sole that connects to the foot.