JP2000312602A - Shoes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide shoes capable of dealing with various applications, conditions, etc., with just a pair. SOLUTION: Each of the shoes 1 has an upper part 3, a sole part 5 and weight adjusting parts 7. Many holes 9 as gaps are formed in the sole part 5. Each of the holes 9 consists of an inner hole 9a which is formed toward an outer side from an inner side and does not reach the outer side in the final and an outer hole 9b which is formed toward the inner side from the outer side and does not reach the inner side in the final. The inner holes 9a and the outer holes 9b are alternately formed from the toe toward the heel. The weight adjusting members 7 are inserted into the holes 9. The weight adjusting members 7 are formed by compounding metallic powder into rubber or synthetic resin, by which the specific gravity is regulated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to shoes such as climbing shoes, trekking shoes, walking shoes, and jogging shoes.

[0002]

2. Description of the Related Art In the shoe market, various shoes according to the use are provided.
The sole pattern etc. are selected. The weight of the shoes,
It is an important selection factor. Lighter shoes may be preferable for short-distance running shoes. However, shoes for mountain climbing, trekking, walking, and the like do not necessarily have to be lightweight. Generally, it is said that the heavier the wearer's equipment, the heavier the shoes, the less tired it is. Depending on the equipment, for example, shoes with a foot weight of about 400 g to 800 g for walking, about 500 g to 2000 g for trekking, and about 700 g to 2500 g for mountain climbing where equipment is the heaviest, are commercially available.

[0003]

As described above, since the weight of the shoes varies depending on the application, for example, those who habitually go trekking but also enjoy climbing or those who jog immediately after walking are weighted. Two or more different shoes must be prepared. Also, since the weight of the equipment varies depending on the case even for the same mountain climbing, a plurality of mountain climbing shoes corresponding to the weight of the equipment should ideally be prepared, but this is not realistic. Further, even with the same equipment, the optimal weight of the shoes varies depending on the wearer's physique, muscular strength, habit of walking, running distance, difficulty of the route, and the like. It is difficult for conventional shoes to respond to various uses and situations with a single pair. The present invention has been made in view of such circumstances, and has as its object to provide shoes that can respond to various uses, situations, and the like at a glance.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has a weight adjusting member, and the whole weight or the weight balance is adjusted by attaching and detaching the weight adjusting member. Shoes.

[0005] In this shoe, since the overall weight can be adjusted by attaching and detaching the weight adjusting member, an optimal weight can be selected for each application such as mountain climbing, trekking, walking and jogging. Also, depending on the condition of the wearer's physique, muscular strength, habit of walking, mileage, difficulty of the route, etc.
The optimal weight can be selected. Therefore, various uses and situations can be dealt with with one pair of shoes, and the wearer does not need to prepare many shoes.

Also, in this shoe, the weight balance can be adjusted by attaching and detaching the weight adjusting member, so that the toe side can be set heavier than the heel side, and conversely, the toe side can be set lighter than the heel side. Shoes with a heavy toe set are advantageous for a wearer who walks while slowly swinging his toes like a pendulum. Shoes with lighter toes are used on uphills where you have to lift your toes and walk.
This is advantageous because the wearer is less tired.

In the present invention, the difference between the maximum weight and the minimum weight that can be selected (hereinafter also referred to as “adjustment allowance”) is 5
0 g or more is preferable. If the adjustment allowance is less than 50 g, the aforementioned effects of adjusting the total weight and weight balance cannot be sufficiently obtained. In this respect, the adjustment allowance is more preferably equal to or greater than 100 g, and still more preferably equal to or greater than 500 g. The larger the adjustment allowance is, the more preferable it is. Therefore, the upper limit does not need to be specified in the present invention, but the upper limit of the adjustment allowance within the allowable weight range of general shoes is about 3000 g.

[0008] In the present invention, the shoe may be configured such that the total weight or the weight balance is adjusted by attaching and detaching the weight adjusting member to and from the gap formed in the sole portion. Thereby, the sense of incongruity given to the wearer is reduced as compared with a case where the weight adjusting member is attached to the upper portion, for example. In general, the sole portion may be composed of a single layer, or a midsole and an outsole.
Although it may be formed from a layer, a void can be formed in any case. When the sole portion is formed from the two layers of the midsole and the outsole, the void may be formed only in the midsole, may be formed only in the outsole, and may be formed in the midsole and the outsole. May be formed. Usually, a gap is formed in a midsole where a large gap can be formed due to a large thickness. In addition, when the gap is formed across the midsole and the outsole, as described later,
Voids can be formed by molding without using a core.

[0009] In the present invention, the shoe may be configured such that the overall weight or weight balance is adjusted by attaching and detaching a weight adjusting member to and from a gap formed in the insole portion. This also allows the weight of the shoe to be adjusted without giving the wearer an uncomfortable feeling.

In the shoe according to the present invention, the weight may be adjusted depending on whether or not the weight adjusting member is mounted, or the weight may be adjusted by mounting the weight adjusting member having a different specific gravity. For example, when a weight adjusting member is attached to the sole portion, as a weight adjusting member having a different specific gravity, the weight adjusting member whose specific gravity is lighter than the specific gravity of the sole portion, the weight adjusting member whose specific gravity is equal to the specific gravity of the sole portion, and the like. It is sufficient that two or more types are prepared from the weight adjusting members whose specific gravity is heavier than the specific gravity of the sole portion. Further, a plurality of types of weight adjusting members having different specific gravities may be prepared as the weight adjusting members heavier than the specific gravity of the sole portion.

The weight adjusting member whose specific gravity is lighter than the specific gravity of the sole portion includes, for example, a rubber molded product or a resin molded product containing air bubbles. As a weight adjusting member having a specific gravity equal to the specific gravity of the sole portion, for example, a material having the same material as that of the sole portion may be used. As the weight adjusting member whose specific gravity is heavier than the specific gravity of the sole portion, for example, those made of a metal material such as lead, tungsten or copper, rubber molded products or resin molded products containing metal powder, water and oil, etc. Made of a capsule in which the above liquid is sealed. In particular, since the elasticity and the like of the weight adjusting member which is a rubber molded body or a resin molded body and contains metal powder is similar to the material of the sole portion, it is possible to suppress the wearer from feeling uncomfortable.

In the present invention, it is preferable that the weight adjusting member is mounted in the gap by press-fitting. This prevents the weight adjustment member from falling off when worn, even if the fixing means is not particularly provided. When pressed in, the maximum value of the total amount of deformation of the gap and the weight adjustment member is 0.05 m
m or more and 0.5 mm or less, preferably 0.1 mm or more.
Particularly preferred is 2 mm or less. If the maximum value is less than the above range, the weight adjusting member may easily fall off when worn. Conversely, if the maximum value exceeds the above range, press fitting may be difficult. The press-fit deforms both or one of the gap and the weight adjusting member (the gap expands and the weight adjusting member contracts). At this time, the maximum value of the sum of the deformation amounts of both at the same location is:
"The maximum value of the total amount of deformation of the gap and the weight adjusting member".

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view showing a shoe 1 according to an embodiment of the present invention, and FIG.
FIG. 2 is a sectional view taken along line II-II of FIG. This shoe 1 is
An upper part 3, a sole part 5, and a weight adjusting member 7 are provided. The configuration of the upper part 3 is equivalent to a known shoe.

The sole portion 5 is formed from rubber or synthetic resin. The sole portion 5 has a number of holes 9 as voids.
Are formed. The cross-sectional shape of the hole 9 is circular. This hole 9 is formed from the inside (upper side in FIG. 2) to the outside (lower side in FIG. 2) and finally does not reach the outside. And an outer hole 9b not reaching the inside. That is, the hole 9 is open only on either the inside or the outside. Of course, all the holes 9 may be through holes penetrating from the inside to the outside. Inside hole 9
a and the outer hole 9b are formed alternately from the toe to the heel. Thereby, the left and right weight balance of the shoe 1 is maintained. The hole 9 is formed by cutting the sole portion 5 with a cutting tool such as a drill, and the hole 9 is formed by using a core when the sole portion 5 is formed by a mold. Is also good.

A weight adjusting member 7 is inserted into each of the holes 9. The specific gravity of the weight adjusting member 7 is adjusted by mixing metal powder with rubber or synthetic resin, and its shape is substantially cylindrical. By inserting the weight adjusting member 7 having a relatively large specific gravity into the hole 9, the overall weight of the shoe 1 increases. Further, by inserting the weight adjusting member 7 having a relatively small specific gravity into the hole 9, the overall weight of the shoe 1 is reduced. It should be noted that the weight of the shoe 1 may be reduced even if the weight adjusting member 7 is not inserted into the hole 9 at all.
However, in this case, dust may enter the holes 9 and the deformation of the sole portion 5 may be uneven, and the wearer may feel uncomfortable. Is preferably inserted.

The weight adjustment member 7 having a relatively large specific gravity is inserted into the hole 9 near the toe, and the weight adjustment member 7 having a relatively small specific gravity is inserted into the hole 9 near the heel. Get closer. Conversely, the weight adjusting member 7 having a relatively small specific gravity is inserted into the hole 9 near the toe,
By inserting the weight adjusting member 7 having a relatively large specific gravity into the hole 9 near the heel, the center of gravity of the shoe 1 is closer to the heel.

The weight adjusting member 7 is press-fitted into the hole 9. The press-fitting causes one or both of the diameter expansion of the hole 9 and the diameter reduction of the weight adjusting member 7. In this embodiment, since the cross-sectional shapes of the hole 9 and the weight adjusting member 7 are both circular, the value obtained by subtracting the inner radius of the hole 9 from the outer radius of the weight adjusting member 7 is “the gap and the deformation amount of the weight adjusting member 7”. The maximum value of the sum ". For example, when the cross-sectional shape of the hole 9 is elliptical and the cross-sectional shape of the weight adjusting member 7 is circular, the value obtained by subtracting the minor axis radius of the ellipse from the outer radius of the weight adjusting member 7 is “gap and weight adjustment”. The maximum value of the total deformation amount of the member ".

The general JIS-A hardness of the sole portion 5 is as follows:
Although it is about 60 to 90, the JIS-A hardness of the weight adjusting member 7 is preferably 55 or more and 95 or less,
70 or more and 80 or less are particularly preferable. J of weight adjustment member 7
If the IS-A hardness is out of the above range, the deformation of the sole portion 5 becomes uneven, and the wearer may feel uncomfortable.

FIG. 3 is an enlarged perspective view showing the weight adjusting member 7 of the shoe 1 of FIG. As described above, the weight adjusting member 7 is substantially cylindrical. A hook hole 11 having a substantially "L" shape is formed near one end thereof. When the press-fit weight adjustment member 7 is removed, a hook (not shown) having an “L” -shaped tip is inserted into the hook hole 11, the hook is pulled, and the weight adjustment member 7 is pulled out. Instead of the “L-shaped” hook hole 11, a hole in which a female screw is threaded on the inner periphery may be formed in the weight adjustment member 7. In this case, the weight adjusting member 7 is pulled out by a tool having a male screw formed at the tip.

FIG. 4 is a front view showing a shoe 13 according to another embodiment of the present invention. These shoes 13
Are the upper part 3, the sole part 15, and the weight adjusting member 7.
And The configurations of the upper portion 3 and the weight adjusting member 7 are the same as those of the shoe 1 shown in FIG.

The sole portion 15 of the shoe 13 comprises a soft midsole 17 having a relatively low hardness and an outsole 19 having a higher hardness than the midsole 17. The hole 21 having a circular cross section is
And the outsole 19. The upper half of the hole 21 (semicircular in cross section) is located on the midsole 17 side, and the lower half is the outsole 19.
Located on the side. The hole 21 is formed from the inside to the outside and finally does not reach the outside, and the inside hole 21a is formed from the outside to the inside and finally formed from the outside, similarly to the shoe 1 shown in FIG. The outer hole 21b does not reach the inside. The inner holes 21a and the outer holes 21b are formed alternately from the toes to the heel.

When the midsole 17 is molded with a mold,
By providing a semi-cylindrical projection on the inner surface of the mold,
The mid-sole 1 is a semi-cylindrical concave portion whose convex portion is inverted.
7 is formed on the lower surface. Similarly, when the outsole 19 is formed by a mold, a semi-cylindrical convex portion is provided on the inner surface of the mold, so that the semi-cylindrical concave portion having the inverted convex portion is formed on the upper surface of the outsole 19. Formed. Then, the midsole 17 and the outsole 19 are bonded together so that the position of the concave portion of the midsole 17 and the position of the concave portion of the outsole 19 coincide with each other, and the hole 21 is formed. That is, in the shoe 13, the hole 21 can be formed by a mold without using a core. Of course, the hole 21 may be formed by cutting the sole portion 15 with a cutting tool such as a drill.

In the shoe 13 as well, the total weight or weight balance of the shoe 13 is adjusted by attaching and detaching a weight adjusting member to and from the hole 21.

FIG. 5 is a front view showing a shoe 23 according to still another embodiment of the present invention. The shoe 23 includes an upper portion 3, a sole portion 25, and a weight adjusting member 27. The structure of the upper part 3 is shown in FIG.
Is equivalent to the shoe 1 shown in FIG. Two holes 29 are formed in the sole portion 25 as voids. Hole 29
Has a rectangular cross section. A weight adjusting member 27 is inserted into each of the holes 29. The weight adjusting member 27 has a specific gravity adjusted by mixing metal powder with rubber or synthetic resin, and has a plate shape.

The weight of the shoe 23 is increased by inserting the weight adjusting member 27 having a relatively large specific gravity into the two holes 29. Conversely, by inserting the weight adjusting member 27 having a relatively small specific gravity into the two holes 29, the overall weight of the shoe 23 is reduced. Also, the weight adjustment member 27 having a relatively large specific gravity is inserted into the hole 29 near the toe, and the weight adjustment member 27 having a relatively small specific gravity is inserted into the hole 29 near the heel, so that the center of gravity of the shoe 23 is shifted toward the toe. Becomes Conversely, the weight adjustment member 27 having a relatively small specific gravity is inserted into the hole 29 close to the toe, and the weight adjustment member 27 having a relatively large specific gravity is inserted into the hole 29 close to the heel. Get closer.

FIG. 6 is a partially sectional front view showing a shoe 31 according to still another embodiment of the present invention. The shoe 31 includes an upper part 3, a sole part 33,
An insole portion 35 and a weight adjusting member 37 are provided. The configuration of the upper part 3 is the shoe 1 shown in FIG.
Is equivalent to The insole portion 35 is laid on the upper surface of the sole portion 33 inside the upper portion 3. The lower surface of the insole portion 35 and the upper surface of the sole portion 33 are not joined. The bottom view of the insole portion 35 is shown in FIG.
Is shown in

As is clear from FIGS. 6 and 7, the insole portion 35 has a plurality of void portions 39 on the lower surface thereof. The weight adjusting member 37 is inserted into each of the gaps 39. The weight adjusting member 37 has a specific gravity adjusted by mixing metal powder with rubber or synthetic resin, and has a plate shape.

By mounting the weight adjusting member 37 having a relatively large specific gravity in the gap portion 39, the overall weight of the shoe 31 increases. Conversely, by mounting the weight adjusting member 37 having a relatively small specific gravity in the gap portion 39, the overall weight of the shoe 31 is reduced. In addition, the weight adjustment member 37 having a relatively large specific gravity is attached to the gap portion 39 near the toe, and the weight adjustment member 37 having a relatively small specific gravity is attached to the gap portion 39 near the heel, so that the center of gravity of the shoe 31 is adjusted. Be close to your toes. Conversely, the gap 3 near the toe
9, a weight adjusting member 37 having a relatively small specific gravity is attached,
By attaching the weight adjusting member 37 having a relatively large specific gravity to the space portion 39 near the heel, the center of gravity of the shoe 31 is closer to the heel.

In order to mount the weight adjusting member 37, first, the wearer takes out the insole portion 35 from the upper portion 3.
Then, the weight adjusting member 37 is attached to the space 39. At this time, since the size of the gap portion 39 is slightly smaller than the size of the weight adjustment member 37, the weight adjustment member 37 is pressed into the gap portion 39, and the weight adjustment member 37 is fixed to the insole portion 35. Of course, instead of press-fitting, for example, the weight adjusting member 37 is formed by a double-sided tape or a magic tape.
May be fixed. Thus, the insole portion 35 to which the weight adjusting member 37 is attached is returned to the inside of the upper portion 3, and the overall weight or weight balance of the shoe 31 is adjusted.

In the shoe 31, a weight adjusting member is not mounted on the sole portion 33, but the shoe may be configured such that the weight adjusting member 37 can be mounted on both the insole portion 35 and the sole portion 33. In this way, the degree of freedom in weight adjustment is increased. Further, in this shoe 31, a void portion 39 is formed on the lower surface of the insole portion 35,
A similar void may be formed on the upper surface of the sole portion 33.
In this case, the insole portion 35 is peeled off, a weight adjusting member is attached to the space of the sole portion 33, and the insole portion 35 is laid again thereon.

[0031]

EXAMPLES Hereinafter, the effects of the present invention will be clarified based on examples, but it is needless to say that the present invention should not be construed as being limited based on the description of the examples.

EXAMPLE A commercially available walking shoe (total weight for one foot: 400 g) was obtained. This walking shoe was provided with an upper part and a sole part, and the sole part consisted of a single layer. This sole portion is cut with a cutting tool to form 20 holes (10 inner holes and 10 outer holes) as shown in FIGS. 1 and 2,
I got a shoe body. The inner diameter of the hole was 12 mm.
The inner and outer holes were formed alternately from the toes to the heel. Next, a rubber composition in which lead powder was blended with natural rubber was vulcanized and molded to obtain a cylindrical weight adjusting member.
The weight adjusting member has a specific gravity of 0.95, a specific gravity of 1.5, a specific gravity of 3.0, and a specific gravity of 5.0 by varying the amount of the lead powder.
0 and specific gravity 10.0. In addition, specific gravity 0.9
No lead powder was blended in the weight adjusting member of No. 5. The specific gravity of the weight adjusting member having the specific gravity of 0.95 is the same as the specific gravity of the sole portion. The outer diameter of the weight adjusting member was 12 mm, and the length was 70 mm. In this way, a shoe of the example, comprising the shoe body and five types of weight adjusting members, was obtained.

[Reference Examples 1 and 2] The commercially available walking shoes used in the examples were used as the shoes of Reference Example 1. Also, a commercially available mountaineering shoe (total weight 1800 g) was obtained and used as a shoe of Reference Example 2.

[Weight Adjustment Example] A weight adjusting member having a specific gravity of 0.95 is provided in all holes of the shoe body of the embodiment (20 in total).
Was inserted to obtain Adjustment Example 1. The overall weight of the shoe of Adjustment Example 1 was 400 g, and the weight balance was uniform. Also, the third from the toe of the shoe body of the embodiment,
The fourth, eleventh, twelfth, thirteenth, seventeenth, and eighteenth holes have a weight adjusting member having a specific gravity of 1.5 (7 in total).
), And a weight adjusting member having a specific gravity of 0.95 (a total of thirteen) was inserted into the other holes to obtain a second adjustment example. The overall weight of the shoe of Adjustment Example 2 was 430 g, and the weight balance was uniform. In addition, a weight adjusting member having a specific gravity of 3.0 (a total of seven) is inserted into the third, fourth, eleventh, twelfth, thirteenth, seventeenth, and eighteenth holes from the toes of the shoe body of the embodiment. Then, a weight adjusting member having a specific gravity of 0.95 (a total of thirteen) was inserted into the other holes, to thereby obtain a third adjustment example. The overall weight of the shoe of Adjustment Example 3 was 460 g, and the weight balance was uniform. In addition, a weight adjusting member (specifically, 20 pieces) having a specific gravity of 5.0 was inserted into all the holes of the shoe body of the example to obtain a fourth adjustment example. The overall weight of the shoe of Adjustment Example 4 was 1000 g, and the weight balance was uniform. In addition, a weight adjusting member having a specific gravity of 10.0 (a total of 20 members) was inserted into all the holes of the shoe body of the example to obtain a fifth adjustment example. The overall weight of the shoe of Adjustment Example 5 was 1800 g, and the weight balance was uniform. Furthermore, eleventh to second from the toe of the shoe body of the embodiment
A weight adjusting member having a specific gravity of 10.0 (10 in total)
And a weight adjusting member having a specific gravity of 0.95 (ten in total) was inserted into the other holes, to thereby obtain a sixth adjustment example. The overall weight of the shoe of Adjustment Example 6 was 1,050 g, and the weight balance had a center of gravity closer to the heel.

[Sensory Evaluation] Ten testers were allowed to wear the shoes of the embodiment, the shoes of Reference Example 1 and the shoes of Reference Example 2 whose weight was adjusted by the methods of Adjustment Examples 1 to 6,
Walked. Then, the degree of fatigue was evaluated on a five-point scale.
The evaluation was "1" for the most easily fatigued, and "5" for the least fatigued. The results of the evaluation are shown in Table 1 below.

[0036]

[Table 1]

From the evaluation results shown in Table 1, the weight of the shoes of the embodiment is adjusted so that the overall weight is reduced when the luggage is light, and is increased when the luggage is heavy. Thereby, it was confirmed that the wearer's fatigue was suppressed. In addition, it was confirmed that by adjusting the weight of the shoes of the example so as to be the center of gravity of the heel, the wearer's fatigue can be suppressed even on the ascending slope.

[0038]

As described above, in the shoe according to the present invention, the overall weight and the weight balance can be selected according to the application and the situation. Therefore, the shoes of the present invention can respond to various uses and situations with one foot.

[Brief description of the drawings]

FIG. 1 is a front view showing a shoe according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is an enlarged perspective view illustrating a weight adjusting member of the shoe of FIG. 1;

FIG. 4 is a front view showing a shoe according to another embodiment of the present invention.

FIG. 5 is a front view showing a shoe according to still another embodiment of the present invention.

FIG. 6 is a partially sectional front view showing a shoe according to still another embodiment of the present invention.

FIG. 7 is a bottom view showing the insole portion of the shoe of FIG. 6;

[Explanation of symbols]

 1, 13, 23, 31 Shoes 3 Upper part 5, 15, 25, 33 Sole part 7, 27, 37 Weight adjustment member 9, 21, 29 Hole 9a, 21a Inner hole 9b, 21b Outer hole 11 Hook hole 17 Midsole 19 Outsole 35 Insole part 39 Void part

Claims (5)

[Claims] 1. A shoe comprising a weight adjusting member, wherein the overall weight or the weight balance is adjusted by attaching and detaching the weight adjusting member. 2. The shoe according to claim 1, wherein the difference between the maximum weight and the minimum weight that can be selected is 50 g or more. 3. It has a sole part and an upper part,
The shoe according to claim 1 or 2, wherein the sole portion has a gap, and the weight or the weight balance is adjusted by attaching and detaching a weight adjusting member to and from the gap. 4. The shoe according to claim 3, wherein the sole portion includes a midsole and an outsole, and the gap is formed between the midsole and the outsole. 5. The apparatus according to claim 1, further comprising an insole portion, wherein a weight adjusting member is attached to and detached from the insole portion to adjust the overall weight or the weight balance. Shoes according to the paragraph.