JP2006174853A - Footwear utilizing dislocation of center of gravity of load on sole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide footwear to make walking easier and more efficient. <P>SOLUTION: The bottom of the footwear is divided into at least two portions corresponding to a bending part of the sole when a walker is walking, and bendably connected to each other. The thickness of the portion on the heel side is thicker than that on the toe side, and the bending part is bent with the weight of the walker by means of the action of a lever with the stepped corner part as the fulcrum, so that the center of gravity is instantly dislocated forward the bottom of the footwear to push the heel upward. As a result, the heel kicking action is not necessary and the power necessary for walking can be significantly reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to footwear that can convert a vertical motion, which is a burden on the body during walking, particularly muscles, into a circular motion by applying the lever principle to footwear and can walk smoothly and restrained for a long time.

  In the circular motion trajectory in a series of walking movements by the joints of the foot, especially when trying to step on the base of the thumb of the step foot, if you do not step on while lifting the body with conventional footwear, you will not kick out the supporting foot, I can't walk fast. Therefore, when trying to walk continuously with a person with weak muscles such as an elderly person or a large thigh, it is not possible to maintain the action of lifting the body by the foot. In addition, elderly people such as elderly people had to walk with their legs.

  In walking or running, especially when walking for a long time on the crotch, a large vertical movement is required and muscle fatigue is remarkable. In addition, elderly people with weakened muscles that cannot be kicked out are crushed, so they cannot walk on the crotch and cannot quickly reach their destination.

  The present invention absorbs the differential change in the sole load that moves from the position of the center of gravity in an upright state to the tip of the foot during walking, and absorbs the vertical movement of the ankle joint part based on the lever principle of the seesaw. The present invention provides an efficient footwear that utilizes the pedestrian's own weight, which can strongly support the vertical movement by the trajectory and can be changed to a smoother rotational movement.

To achieve the above object, the footwear of the present invention comprises a first bottom portion having a first surface in contact with a portion including a toe portion of a sole, a heel of the sole that is continuous with the first surface and A second surface that is in contact with a portion including the portion, and can be bent with respect to the first bottom portion by a predetermined axis provided at a boundary line between the first surface and the second surface. The bottom,
A grounding movable member attached to the grounding surface of the first bottom part and movable in the forward and backward directions with respect to the first bottom part, wherein the second bottom part is thicker than the thickness of the first bottom part. The front corner portion of the step formed by the thickness portion is ahead of the center of gravity position in the upright state of the pedestrian, and the ground contact surface of the thickness portion of the second bottom portion is grounded in the forward movement. The grounding movable member of the first bottom is grounded, and the second bottom is the first bottom as the center of gravity moves from the second bottom to the first bottom. The grounding surface of the second bottom part separates from the grounding surface of the first bottom part and rises from the ground, and the first bottom part moves forward relative to the grounding movable member. It is characterized by that.

  Further, another structure of the footwear of the present invention includes a first bottom portion having a first surface in contact with a portion including a toe portion of the sole, and a heel portion of the sole that is continuous with the first surface. A second bottom part that has a second surface in contact with the part, and can be bent with respect to the first bottom part by a predetermined axis provided at a boundary line between the first surface and the second surface; A grounding movable member attached to the grounding surface of the first bottom part and movable in the forward and backward directions with respect to the first bottom part, wherein the second bottom part is thicker than the thickness of the first bottom part. The front corner portion of the step formed by the thickness portion is ahead of the centroid position in the upright state of the pedestrian, and the pedestrian moves in the forward movement, and the pedestrian moves in the forward movement, and the second bottom portion From the state where the thickness part is grounded, the front corner part is used as a fulcrum, The first bottom portion and the second bottom portion are inclined forward, the grounding movable member of the first bottom portion is grounded, and further, the first bottom portion is advanced relative to the grounding movable member. The first bottom portion is bent and grounded with respect to the second bottom portion, and the rear of the second bottom portion is pushed up with the front corner portion as a fulcrum.

  Preferably, in the footwear of the present invention, when the grounding movable member is not grounded to the ground, the grounding movable member protrudes from the grounding surface of the first bottom, grounds to the ground, and the grounding of the first bottom Along with the advancement with respect to the grounding movable member, the grounding member is substantially flush with the grounding surface of the first bottom portion.

  The present invention realizes a smooth walking by instantly starting up with almost no weight lifting operation at the time of stepping that is most burdensome on the muscle in walking or running motion, and there are two footwear cross sections. A bendable joint that connects the bottom part (pedestal) divided into two parts (the first bottom part and the second bottom part) and the effective distance between the leverage point and the leverage point for the bottom part to move by lever action Has a sliding mechanism (grounding movable member) for maintaining the above.

  The cross-sectional horizontal pressure of the joint portion in the upright stationary state is such that the joint cross-section is compressed by the heel and the foot load at the tip, and the joint portion that is firmly connected tends to stretch.

  When shifting from an upright stationary state to a stepping-out position, the center of gravity position of the sole also moves, and the pedestal (bottom part) tilts forward from the stepped fulcrum accordingly, and the tip of the grounding movable member that has a sliding mechanism contacts the ground A vertical load is applied between the part and the fulcrum front fulcrum (the lever fulcrum), the balance is lost, and the lower part of the joint part tends to extend. The lower section of the joint with extremely low elongation resistance starts to open both front and rear. As a result, the sole that lifts the weight starts to fall and the rear bottom (pedestal) is pushed up from the lever fulcrum. As a result, the position of the center of gravity is further accelerated by the pedestrian's own weight, and can move to the position of the stepping-in position in an instant, and can be greatly protruded by the supporting leg.

  Thereby, it becomes possible to walk with a smaller force by a normal walking operation, and easy and efficient walking can be realized.

  Embodiments of the present invention will be described below with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention.

  FIG. 1 is a top view (FIG. 1 (a)) and a side view (FIG. 1 (b)) of footwear in an embodiment of the present invention. In FIG. 1, the bottom portion of the footwear is shown in order to explain the principle configuration of the footwear of the present embodiment. However, on the bottom portion, an ankle portion such as a member covering the ankle portion is worn. A member is attached.

  The footwear of the present embodiment includes two bottom portions, that is, a first bottom portion 10 and a second bottom portion 20. The first bottom portion 10 is a portion on which the front side of the foot including the toe portion of the foot rests, and the second bottom portion 20 is a portion on which the rear side of the foot including the heel portion of the foot rests. The first bottom part 10 and the second bottom part 20 are connected to each other by a bending mechanism 30 so as to be bent. Specifically, the bending mechanism 30 is configured to bend at the first bottom portion 10 and the second bottom portion 20 with a cross section of a surface on which a foot is placed as a fulcrum (see FIG. 1B). For example, the structure which attaches a hinge to the foot sole of both bottom parts may be sufficient, and the structure of other than that may be sufficient.

  FIG. 2 is a diagram illustrating another configuration example of the bending mechanism 30. As shown in FIG. 2 (a), the bottom surfaces of the first bottom 10 and the second bottom 20 may be connected by a thin wire 31 such as a piano wire, or as shown in FIG. You may connect with the flexible plate-shaped object 32 like.

  When a leaf spring as shown in FIG. 2B is used, it is preferable that the initial state of the leaf spring is already curved. By doing so, when the second bottom portion 20 is bent with respect to the first bottom portion 10, a force that resists the leaf spring is not required, and on the contrary, the restoring force of the leaf spring is used to bend the ankle tip. Following this, the second bottom portion 20 can be bent.

  The position of the bending mechanism 30 is preferably a position corresponding to a portion where the ankle tip is bent in a walking motion, specifically, a portion where the base joint (base) of the big toe is on. In a general walking motion, when performing a heel raising operation, the base joint portion of the thumb of the toe serves as a fulcrum, and the heel portion is kicked up.

  Further, the second bottom portion 20 is configured so that the thickness thereof is larger than the thickness of the first bottom portion 10. In FIG. 1, two protrusions (thickness portions) 21 are attached to the second bottom portion 20. And a step is formed between the first bottom portion 10 and the second bottom portion 20. The number, shape, and attachment position of the protrusions 21 are not limited to those shown in FIG. 1, and the second bottom portion 20 as a whole may be thicker than the first bottom portion 10.

  Then, the corner portion 21A on the front side that comes into contact with the ground of the step formed by the thickness portion 21 serves as a fulcrum of the seesaw, and is located in front of the center of gravity (dotted line M) in the upright state of the pedestrian. There is a need. As will be described later, when the center of gravity moves forward from the start of the walking motion, the first bottom portion 10 is lowered and grounded, and then the folding mechanism 30 is bent, but the fulcrum for performing the motion is in an upright state. This is because the position needs to be before the position of the center of gravity.

  Further, the grounding movable member 11 is attached to the first bottom portion 10 so as to be movable forward and backward with respect to the first bottom portion 10. In FIG. 1, two grounding movable members 11 are attached, but the number, shape, and attachment position are not limited to those shown in FIG. 1.

  The ground movable member 11 is attached so as to be movable relative to the first bottom portion 10 in the forward and backward directions by hollowing out a predetermined portion of the first bottom portion 10. For example, as shown in FIGS. 1A and 1B, the ground movable member 11 is formed by bonding an elastic member (spring, sponge, etc.) 11b to the same member 11a as the bottom surface of the first bottom portion, The structure attached to 10 may be sufficient, and the structure of other than that may be sufficient.

  FIG. 3 is a diagram showing another configuration example of the ground movable member 11. FIG. 3A is a top view of the footwear, in which two places of the first bottom portion 10 are hollowed out and the grounding movable member 11 is attached. 3 (b) and 3 (c) are enlarged cross-sectional views thereof, FIG. 3 (b) is a state in which the ground is not grounded, FIG. 3 (c) is grounded, and the first bottom portion is connected to the grounding movable member 11. It is a figure which shows the state which moved with respect to and the earthing | grounding movable member 11 has bent. A symbol x <b> 0 shown in FIG. 3C is a moving distance of the first bottom portion 10 due to the bending of the ground movable member 11. Thus, the grounding movable member 11 itself may be configured with a member that bends forward and backward. The ground movable member 11 itself is formed of a relatively soft elastic member, and the ground movable member 11 is bent to move the first bottom portion 10 forward. As will be described later, in the bent state, it is preferable that the first bottom portion 10 fits on substantially the same plane.

  The operation of the grounding movable member 11 will be described in detail later, but its function will be briefly described here. In the upright state, the center of gravity is located on the second bottom portion 20 (see the dotted line G in FIG. 1). Since the bottom portion 20 is thicker than the first bottom portion 10, the second bottom portion 20 is grounded. Starting the walking motion from that state, when the center of gravity moves from the second bottom 20 to the first bottom 10 in forward walking, the center of gravity moves forward from the state where the second bottom 20 is grounded, Using the step angle portion 21A as a fulcrum, like the seesaw, the first bottom portion 10 is lowered, and the grounding movable member 11 of the first bottom portion 10 is grounded. And the 2nd bottom part 20 bends with respect to the 1st bottom part 10, and the clearance gap distance arises between the 1st bottom part 10 and the 2nd bottom part 10 by the bending (refer FIG.4 (c) mentioned later). ). The ground movable member 11 is for absorbing this gap distance Δx. As a result, the generation of the gap distance becomes a driving force forward in the traveling direction and a pushing force of the heel portion of the second bottom portion 20 on the first bottom portion 10, and the grounding movable member 11 receives the driving force. Thus, the first bottom portion 10 is moved forward relative to the ground movable member 11, and the walking distance of one step can be extended beyond the normal stride.

  FIG. 4 is a diagram for explaining a walking action using footwear in the embodiment of the present invention. FIG. 4A shows an upright stationary state before the start of walking, the center of gravity is at a position on the second bottom 20 (dotted line M), and the first bottom 10 is away from the ground. In this state, the corner portion 21 </ b> A of the step is caused by the sole load distributed to both the first bottom (first pedestal) 10 and the second bottom (second pedestal) 20 connected by the bending mechanism 30. A force to be compressed is applied between (the point F) and the point E where the first bottom portion 10 and the second bottom portion 20 are divided, and the fulcrum D of the bending mechanism 30 is a force to extend in the front-rear direction. Is added. The point D is firmly connected by a bending mechanism 30, and the point E is made of a material that can withstand a compressive load and forms the shape of footwear.

  If the walking motion is started from the state shown in FIG. 4A and a slight kick is to be made, the center of gravity moves forward. When the position of the center of gravity comes before the point F, as shown in FIG. 4B, the first bottom 10 and the second bottom 20 tilt forward with the point F as a fulcrum, and the first bottom 10 The tip end portion (point G) of the grounding movable member 11 attached to the bottom surface of the grounding ground. Further, the point E at the bottom of the bending mechanism 30 tends to extend due to the downward load applied to the first bottom portion 10 behind the grounded tip portion (point G) (the first bottom portion 10 and the second bottom portion 10). The bottom 20 is about to open).

  Further depression, as shown in FIG. 4 (c), the load balance at the first bottom portion 10 and the second bottom portion 20 is disrupted, and the folding mechanism 30 begins to bend due to the downward load in the vertical direction. One bottom 10 and second bottom 20 open. In that case, the force which pushes up strongly the 2nd bottom part 20 back from the F point vicinity of the 2nd bottom part 20 by the leverage of the pedestrian's own weight and F point as a fulcrum generate | occur | produces.

  Further, the lower point E of the bending mechanism 30 is opened by the vertical load, and a gap distance Δx is generated there. The gap distance Δx is absorbed by the ground movable member 11. In other words, the position of the first bottom portion 10 is fixed by the strong frictional force at the point F of the second bottom portion 20. Moreover, the grounding movable member 11 is movable back and forth with respect to the first bottom portion 10 as described above. In this case, since the tip end portion (point G) of the grounding movable member 11 is grounded to the ground and the grounding movable member 11 does not move with respect to the ground, the first bottom portion 10 not yet grounded to the ground. However, the grounding movable member 11 moves forward with respect to the grounding movable member 11 with the grounded tip portion (point G) as a fulcrum. Therefore, the first bottom 10 moves forward relative to the ground movable member 11 to absorb the gap distance Δx. By absorbing the gap distance Δx, the first bottom portion 10 is shifted forward, and the entire bottom surface is in contact with the ground.

  In this way, the first bottom portion 10 is in contact with the ground and pushed up together with the feet on the second bottom portion 20. The ground movable member 11 absorbs the gap distance Δx and the first bottom portion 10 shifts forward, so that the second bottom portion 20 can be pushed up with the point F as a fulcrum.

  Moreover, since the grounding movable member 11 is accommodated in substantially the same plane as the bottom surface of the first bottom portion 10 after absorbing the gap distance Δx, the entire bottom surface of the first bottom portion 10 is grounded. In the kicking operation, it is possible to ensure a frictional resistance that does not slip when kicking.

  The characteristic operation of the present embodiment is that the vertical bottom force is changed to a lateral (front-rear direction) force by bending by the bending mechanism 30 and absorption of the gap distance Δx by the grounding movable member 11, and the first bottom portion. It is to continue to generate a vertically downward force until 10 has finished moving forward and push the rear of the second bottom 20 higher and stronger.

  In this case, it is desirable that the distance between the distal end portion where the grounding movable member 11 first contacts the ground and the fulcrum F is a distance necessary to generate the lever action strongly. That is, the characteristic point of the present invention is that a distance for effectively and more powerfully generating the lever action is obtained by moving the first bottom sideways, and the lateral movement is obtained by moving the fulcrum of the center of gravity. Is supplemented by a downward force based on a drop between the first and second bending mechanisms 30. Furthermore, by using the dead weight so that the differential change of the sole load accompanying the movement of the center of gravity in the movement trajectory performed on the sole does not strain the muscle by the action of the lever, the heavy heel raising operation is unnecessary. .

  Here, if the differences from clogs are enumerated, clogs can walk comfortably while rolling around with a high head. As a result, the back of the clogs rises high, but this is not lifted, but only uses the state just before the body is about to slip. Therefore, if the clogs are low, the effect is halved. Moreover, since the whole is inclined, there is a drawback that only a rough walk is possible.

  The present invention realizes a large drop (higher rearward push-up) that creates an ideal rear slope when the clog is tilted with footwear with a small step by changing the vertical downward force to the longitudinal force. Furthermore, it is characterized in that it can be realized by pushing down the ideal foot form on the foot with the weight of the pedestrian.

  FIG. 5 is a view for explaining the pushed-up height of the heel portion. FIG. 5A shows the heel push-up height H1 of the footwear whose bottom does not bend like a clog, and FIG. 5B shows the bending mechanism 30 when the step is the same as FIG. 5A. The heel pushing-up height H2 in the footwear of this Embodiment which has is shown. As is apparent from the figure, the footwear of the present embodiment can provide a pushed-up height H2 that is much higher than the height H1.

  In this way, the present invention can be pushed up higher than the rear part of the footwear (heel part) compared to the action of the lever when there is no bending, by bending of the bending mechanism due to its own weight and absorption of the distance caused thereby, It can approach the ideal circular motion trajectory of the joint during walking. Therefore, the ideal stepping motion in the sole motion can be achieved by using a large number of connecting bands (by providing multiple bending mechanisms in accordance with the position of the toe joints), resulting in a smoother circular motion. It becomes possible, and the pushing action can be assisted more strongly.

  When the first bottom portion 10 is lowered by the weight of the pedestrian and starts moving with respect to the ground movable member 11, the first bottom portion 10 starts circular motion, and when the movement is finished, the first bottom portion 10 is brought to the ground. It touches and is released from the inclination, and the first bottom 10 is flattened, so that a stable pedestal is transferred. On the other hand, the second bottom portion 20 performs a circular motion that pushes up the heel portion by the coupling interaction with the first bottom portion, whereby the center of gravity can be stepped out and instantaneously moved to the center of gravity.

  When the first bottom 10 is tilted forward at the start of walking, the heel side is pushed up naturally without raising the heel using muscle strength by lowering the base of the foot of the tread foot so that muscle fatigue of the foot Can be reduced.

  In addition, the 1st bottom part 10 and the 2nd bottom part 20 have a structure which does not deform | transform as much as possible, in order to make the effect | action of a lever effective. Furthermore, the bending mechanism 30 is required to be made of a material that can withstand the compressive load of its own weight. Further, the bending mechanism 30 may be configured such that the vicinity of the center is fixed with respect to the twisting direction and the vicinity of both sides is flexible with respect to the twisting direction in order to allow the right and left twisting of the footwear. Thereby, application to sports shoes becomes possible. Further, the distance of the lever fulcrum that can use its own weight is desirably a distance that can ensure the longest possible length.

  As described above, when the center of gravity moves on the first bottom portion 10 due to the forward center of gravity movement in the walking motion, the entire first bottom portion 10 including the grounding movable member 11 as shown in FIG. Is grounded, and the second bottom portion 20 is bent to the extent that it is separated from the ground. Further, as shown in FIG. 4C, in the state where the first bottom portion 10 is moved forward with respect to the ground movable member 11 and the entire first bottom portion 10 is grounded, the ground movable member 11 is the first bottom portion. It is preferable that it does not protrude with respect to 10 and fits in substantially the same plane as the first bottom 10. Since the first bottom portion 10 and the ground movable member 11 are in the same plane, the ground contact area with respect to the ground can be increased, and a necessary and sufficient frictional resistance with respect to the ground can be ensured. Further, since the ground contact area is wide, it contributes to the stability of walking when the center of gravity is located on the first bottom portion 10.

  In order to allow the ground movable member 11 to protrude from the first bottom portion 10 in the initial state and be within the plane of the first bottom portion 10 by moving with respect to the first bottom portion 10, the first bottom portion 10. What is necessary is just to incline the attachment surface (concave part) of the earthing | grounding movable member provided by hollowing out the bottom face of with respect to the ground. That is, the mounting surface of the grounding movable member is shallow enough to protrude the grounding movable member 11 on the tip side of the foot, and deeper to the extent that the grounding movable member 11 becomes flush with the first bottom portion 10 as going backward. Formed to be.

  In the footwear of the above-described embodiment, the bending mechanism 30 is not limited to one place. For example, another bent portion may be provided on the toe side further than the position illustrated in FIG. 1, for example, in correspondence with the bending of the sole of the foot during walking.

  In addition, the footwear of the above-described embodiment can be applied to normal walking footwear (shoes, sandals, etc.), as well as sports shoes for sports (for example, baseball shoes, short-distance running). It can also be applied to shoes for use.

  Moreover, it is preferable that the bending mechanism 30 is comprised so that the torsion of the left-right direction which arises in walking operation may be absorbed.

  In addition, it is preferable to fill a gap generated by the bending of the first bottom portion 10 and the second bottom portion 20 with a stretchable material (resistance is as small as possible) that fills the gap. Thereby, the entrance of water from the bottom surface can be prevented.

  In addition, in this specification, walking shall include not only a walking motion but naturally a motion that runs and other motions that move forward.

It is the upper side figure and side view of the footwear in the embodiment of this invention. FIG. 5 is a diagram illustrating another configuration example of the bending mechanism 30. FIG. 6 is a diagram illustrating another configuration example of the ground movable member 11. It is a figure for demonstrating the walk operation | movement with the footwear in the embodiment of this invention. It is a figure explaining the pushing-up height of a heel part.

Explanation of symbols

  10: 1st bottom part, 11: Grounding movable member, 20: 2nd bottom part, 21: Projection body, 21A: Corner part of level | step difference, 30: Bending mechanism

Claims (3)

A first bottom having a first surface in contact with a portion including a toe portion of a sole;
A second surface that is continuous with the first surface and is in contact with a part including the heel portion of the sole, and a predetermined axis provided at a boundary line between the first surface and the second surface, A second bottom that is bendable relative to the first bottom;
A grounding movable member attached to the grounding surface of the first bottom, and movable in the forward and backward directions with respect to the first bottom;
The second bottom portion has a thickness portion thicker than the thickness of the first bottom portion, and the front corner portion of the step formed by the thickness portion is ahead of the center of gravity position in the pedestrian upright state,
In the forward movement, the grounding movable member of the first bottom is grounded from the state where the grounding surface of the thickness portion of the second bottom is grounded, and from the second bottom to the first bottom With the movement of the center of gravity, the second bottom portion is bent with respect to the first bottom portion, so that the ground contact surface of the second bottom portion is separated from the ground contact surface of the first bottom portion, and rises from the ground. The footwear characterized in that the first bottom portion advances relative to the ground movable member. A first bottom having a first surface in contact with a portion including a toe portion of a sole;
A second surface that is continuous with the first surface and touches a portion including a heel portion of a sole, and a predetermined axis provided at a boundary line between the first surface and the second surface, A second bottom that is bendable relative to the first bottom;
A grounding movable member attached to the grounding surface of the first bottom portion and movable in the forward and backward directions with respect to the first bottom portion;
The second bottom portion has a thickness portion thicker than the thickness of the first bottom portion, and the front corner portion of the step formed by the thickness portion is ahead of the center of gravity position in the pedestrian upright state,
With the movement of the center of gravity of the pedestrian in forward movement, the first bottom portion and the second bottom portion are tilted forward with the front corner portion as a fulcrum from the state where the thickness portion of the second bottom portion is in contact with the ground. The grounding movable member of the first bottom is grounded, and the first bottom is advanced relative to the grounding movable member while the first bottom is advanced relative to the second bottom. The footwear is characterized by being bent and grounded, and the rear of the second bottom is pushed up with the front corner as a fulcrum. In claim 1 or 2,
When the grounding movable member is not grounded to the ground, the grounding movable member protrudes from the grounding surface of the first bottom, contacts the ground, and moves forward with respect to the grounding movable member of the first bottom. Footwear characterized by being substantially flush with the ground contact surface at the bottom.

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