JPS5928901A - Athletic shoe sole - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention provides a structure in which solid and foamed elastic bodies with different hardnesses and compositions are arranged on the lower surface of the insole in accordance with the load applied to the sole, and these are covered to form an outer sole. This invention relates to the structure of an athletic shoe sole that has excellent athletic functionality and safety.

The purpose of this is to support the continuous foot contact process of landing, grounding, kicking start, and kicking up when walking, running, or jumping while wearing shoes, especially when jogging. It appropriately absorbs and absorbs the maximum impact pressure mainly applied to the heel (Y-tux impulse) and the maximum reverse pressure (max thrust) applied to the side of the foot when landing, and further acts from the side of the foot to the toe. This provides a sole for athletic shoes that does not reduce the kicking force in the slightest.

To this end, we used a computer-equipped foot pressure measuring device to three-dimensionally analyze the nine loads that are applied to the soles of shoes during jogging, from the perspective of biomechanics (body engineering). An elastic body is constructed on the lower surface of the midsole to appropriately alleviate and absorb the overload applied to the back.

Therefore, by appropriately selecting the swelling/softness, hardness, and composition of the elastic body,
By arranging the elastic bodies at appropriate locations in each part of the shoe sole, the purpose is to significantly improve the interlocking functionality and safety of the shoe during jogging, and to provide a comfortable, high-value-added athletic shoe sole. It is something.

Conventionally, shoes have a structure that alleviates and absorbs the landing impact pressure (impulse) applied to the heel of the sole and the thrust pressure applied to the side of the foot when walking, running, or jumping while wearing shoes. Various bottoms have been proposed. For example, a sponge layer is attached to the heel part of the lower surface of the shaft-shaped insole fabric made by sewing the shoe cover and the insole fabric into a bag shape, or from the heel to the non-step area, and this is then injected or injected with an elastic polymer material. Japanese Utility Model Publication No. 51-9389 discloses a shoe sole in which the outer sole is formed by embedding the shoe by molding. In addition, the shoe cover and the insole fabric are sewn together and the shoe last is inserted.
A method of forming a grounded sole by placing a sponge sole coated with heat-sensitive adhesive on one side so that the adhesive-coated surface is in contact with the inner sole cloth, and then wrapping the sponge sole using an injection molding method. It is disclosed in Japanese Patent Application Laid-Open No. 49-87459.

However, in the former case, 1. a cushion layer is attached to the heel part of the bottom surface of the shaft-shaped insole fabric, or from the heel part to the non-stepping part;
Although it is certainly effective in alleviating and absorbing landing impact pressure, it lacks consideration for cushioning the thrust pressure, which is applied to the treading area of the sole during jogging and reaches the maximum load on the sole. It was something.

In the latter case, a sponge sole of approximately the same thickness is attached to the entire bottom surface of the sole of the sole, which is sewn into the inner sole, and the landing area acts continuously from the heel to the toe of the sole. It only uniformly relieves and absorbs loads such as impact pressure (impulse) and thrust pressure (thrust), but does not have a structure that selectively and appropriately buffers according to changes in the load applied to the sole of the shoe. . That is, if the load applied to each part of the shoe sole is repeatedly excessive or insufficient locally, the load on the legs and feet will increase, causing serious damage to the joints and ligaments.

The present invention eliminates these drawbacks, and will be described below with reference to the drawings.The treading part side A of the lower surface 23 of the insole has a solid elasticity with a hardness of 45 to 65 degrees (J-K5K6301 A type hardness). Body 4, heel Mido B with a hardness of 40 to 80 degrees (J engineering S
K153010 type sand) foamed elastic bodies 3 are each protruded in a substantially disc shape. The structure of the athletic shoe sole 1 in which an auxiliary protrusion body 62 is provided in a manner continuous to the protrusion body 6, and the outer sole 7 is formed by covering the protrusion body group 3.4 is the first invention. do. Furthermore, in addition to the above-mentioned protrusion group 3.4, an extremely soft foamed elastic body with a hardness of 30 to 40 degrees (J Engineering EI K15301 type 0 sand) is installed in the approximately curved part of the archway a. The second invention is a structure of a sports shoe sole 1 in which an outer sole 7 is formed by additionally providing a plurality of protrusions 3, 4, and 5 and covering these protrusion groups 3, 4, and 5.

That is, in these inventions, the elastic body group 6.4 is provided on the lower surface 25 of the midsole.
3.4.5 is appropriately arranged and attached, the structure of the athletic shoe sole 1 is such that the landing impact pressure (impulse) and the thrust pressure (thrust) are appropriately alleviated and absorbed.

As mentioned above, the sole of the athletic shoe of this invention was tested by three-dimensionally analyzing the ground contact process during light running from the viewpoint of biomechanics (body engineering) using a foot pressure measuring device with a computer. It was designed based on the results.

Appendix II: A. Calculate the force exerted on the soles of 12 athletes running at 3 m/sea (jogging at 11 km/h) and 5 m/sea (marathon running at 18 km/h) in a gymnasium. , vertical load on the floor (A), horizontal front-back load (→), and horizontal left-right load (/U) were analyzed in three dimensions, and the results were automatically recorded in Otsurographs (1) to (IV). It is something.

In addition, in parallel with the oscillographic measurement, the results of high-speed photography taken from under the floor through transparent glass installed at floor level to show the state in which the sole 1 presses against the floor surface (Figures 4 to 7) Figure).

These test results present only a small portion of the material. Therefore, the structure of the athletic shoe sole 1 of the present invention will be explained by understanding the ground contact process during light running from both aspects of "load changes applied to each part of the shoe sole" and "changes in the ground contact area of the shoe sole" and comparing the two. I want to explain.

In other words, the ``changes in load applied to each part of the sole'' and ``changes in the contact area of the sole'' of a human athlete during jogging (A m /sec) are shown in Otsucillograph (1) and Figure 4, and in the case of athlete B, Otsucillograph is used. (Eeeee) is compared in Figure 6.

For reference, the data regarding marathon running (5m/a8c) are shown in comparison with the oscilloscope (n) and Figure 5 for athlete B, and the oscilloscope (IV) and Figure 7 for athlete B. Ta.

Analyzing the data of this jogging run (32II/see), it is found that the moment of ground contact is on the outer side of the heel (Figs. 4 and 6).
Press (1)) in the figure, and after about 0.02 seconds, the maximum impact pressure of about 1.3 to 1.8 times the body weight from the heel to the metatarsals (Otsirograph (1) (■) (corresponds to Fig. 4 and Fig. 6 (2) and (3) in the pressure trajectory of the shoe sole)
is multiplied, and when O-025 seconds to 0.035 seconds have elapsed, that is,
It can be seen that the weight is supported by both feet, and a considerable portion of the impact pressure at the time of landing is relaxed and absorbed by the material of the sole 1, the joints and ligaments of the feet and legs, and the vertical load (a) rapidly decreases. .

◇ (Oscillograph (1) (m) ■, the pressure trajectory of the sole of the shoe is shown in Figure 4, and (4) in Figure 6 (corresponds to 51)) Moving forward further, when 0.1 seconds have elapsed since landing, The weight is completely shifted to one foot, and the load equal to the kinetic energy added to the body weight acts as lunge pressure, that is, braking force, so the load at this point is the maximum lunge pressure (approximately 2.5 times the body weight) ( Figure 4 shows the pressure trajectory of the sole of the shoe as shown in (1), ■ of (m),
(corresponding to (9) and (10) in FIG. 6).

In addition, it is ideal that the load in the horizontal longitudinal direction (write) and the load in the vertical direction (become zero at the position where the load shows the maximum value, that is, the position where the maximum lunge pressure is applied).

(The OO of Otsushirograph (1) and (III) match) However, as shown in Otsushirograph (■)@, the position where the horizontal longitudinal load (4) shows zero in the process of changing from positive to negative, the maximum In many cases, it lags slightly behind the position of rush pressure (Otsushilog 5 y (I[) (m) (f
f) Compare O@ and 0) Therefore, when the maximum thrust pressure is converted to propulsive force, the delay acts as a braking force,
This becomes a negative factor in propulsion.

For this reason, in the case of athletic axles that place particular emphasis on athletic functionality, the shoes should be used in a narrow range so that the position of the maximum lunge pressure and the horizontal longitudinal load (zero position of the peak) match as much as possible. It is important that the sole 1 of the athletic shoe is configured as (9).

Furthermore, as shown in Otsucillographs (1) to (W)i→,
It can be seen that the horizontal lateral load ( ) 8 has relatively large variations depending on the traveling speed and individual differences.

However, the fluctuation width of this horizontal left-right load G/2 also has a boundary at the position of the maximum thrust pressure and the vicinity where the horizontal longitudinal load ←) becomes zero, and after that, it ends almost at no load.

However, this horizontal horizontal load? Landing on the outside of the heel and moving the center of gravity to the base of the big toe while pronating, this acts as a bending moment in the leg, causing horizontal lateral loads ( Mere uneven distribution can cause damage to the joints and ligaments of the feet and legs, so care should be taken to take countermeasures.

To summarize the above, the position of the maximum thrust pressure (max thrust) where the vertical load (a) reaches its maximum value, the position where the horizontal longitudinal load (b) reaches zero in the process of changing from positive to negative, and Configuring the sole so that the horizontal left and right (10) directional load ()) coincides with the boundary position where most of the koto occurs forms an important element in improving the functionality and safety of the athletic shoe sole 10. I understand that.

In other words, in terms of the position of the sole, this corresponds to the area from the heel along the outer edge of the shoe to the vicinity of the stepping area. As shown in Figure 2, 1, a foamed elastic body 3 is attached to this part.

However, since the area from the stepping part to the toe area is also where the kicking force acts, a full elastic body is provided in this area to prevent the muscular strength of the circumference of the foot from being too absorbed by the cushioning elastic body attached to the sole. 4 is designed to enhance the transmission of foot muscle strength to the sole contact surface. The structure of this athletic shoe sole 1 constitutes the first invention.

On the other hand, as shown in Fig. 3, if the extremely soft foamed elastic body 5 of Kakyubo is attached to the arch 0 of the non-stepping part where the elastic body is missing, it will look like a shoe with an arch cushion attached. , the fit when the foot was put on was improved by -(11) points, and the comfort was significantly improved.

On the other hand, although the attachment of an arch cushion slightly reduces the functionality as a jogging shoe, it is extremely convenient as an athletic shoe sole 1 for both leisure B and walking. This general-purpose athletic shoe sole 1 constitutes the second invention.

As mentioned above, the sole of the athletic shoe of the present invention is based on biomechanics (
Based on the perspective of (physical engineering), we visualized the changes in the pressure area of each part of the shoe sole over time using high-speed photography, in parallel with the wear on the sole. It is now possible to simplify and understand the

Furthermore, based on these materials, the structure of the soles for each purpose was designed to be consistent with the materials, thereby dramatically improving the functionality, safety, and comfort of athletic shoe soles. I was able to improve it.

(12) Example 1 Table 1 (13) Table 2 The composition table of the rubber sponge rubber drawn in Table 1 above (1
) and rubber-based solid rubber compounding table (■), each is separately compounded and kneaded, and the dimensions after crosslinking are 5 to 5 in the case of force.
Rolling is performed to form a plate with a thickness of 6rm and a thickness of 3 to 4 mm according to the recipe (IC).

After that, the recipe (in the case of η, the primary vulcanization was performed using a heat press at a steam pressure of 5 Kg/am" G% for 15 minutes, followed by secondary vulcanization for 7 hours at 100° 0)
) = can be finished thickly.

In addition, in the case of recipe (II), the air pressure of the heat press is 5
Kg 10m” G % Vulcanized for 150'O temp.
Finished thickness is 5 on the hardness scale.

Furthermore, these foamed elastic plate-like bodies and solid elastic plate-like bodies,
Needless to say, the angle can be elastically adjusted depending on the thickness of the shaft to be cut as shown in FIG. 2.

(15) The elastic bodies prepared in this way are adhered to the bottom surface of the insole prepared in advance, but a chloroprene adhesive is applied to the adhesive surface of the insole and the elastic bodies and allowed to air dry for 10 minutes. rear,
Join the two and use a pressure press to approximately 2Kg10n'''G
It is crimped with air pressure.

The insole with the elastic material thus pressure-molded is either sewn onto the sleeve or glued by a hanging method, and after inserting the insole, it is formed into the hollow shape using an injection molding method or a hook casting method. It can also be inserted into the outer sole and glued.

Embodiment 2 In addition to the elastic body group of Embodiment 10, as shown in FIG. 3, an extremely soft foamed elastic body was additionally provided in the arch portion missing in the curve of the non-stepping part.

That is, based on the recipe (III) shown in Table 2, the recipe (
16) After kneading, the mixture was rolled into a plate with a thickness of 5 to 6 mm, and heated to a steam pressure of 5 kg, 10 n''', and 1150°0.
Vulcanized for 18 minutes, hardness 4o degree (TI 81), ground to a thickness of 4 to 5 mm, cut to match the axial dimensions and elastic body group of Example 10, and further The outer sole was bonded using a 0P Blen adhesive.The same manufacturing method as in Example 1 was followed for the molding procedure for the outer sole.

[Brief explanation of the drawing]

The drawings show examples and test results, and FIG. 1 is a sectional view of the main parts of the sports shoe sole of the present invention, viewed directly from the side. Fig. 2 shows a disc-shaped protrusion made of a solid elastic material on the treading part of the lower surface of the midsole, and a protrusion made of a foamed elastic material from the heel along the outer edge of the midsole. (17) A plan view of the midsole with an elastic body when the construction group is sectioned in the XX direction. Figure 4 shows the "change in the contact area of the sole of the shoe" during one step when a large athlete jogs at 3I]lI/S, taken at high speed from the sole side. Trace. Figure 5 shows the trajectory of the "change in the contact area of the sole of a shoe" during one step when a large athlete runs a marathon at 5 m/s, taken from the sole side at high speed. Figure 6 shows the one-step “change in the contact area of the sole of the shoe” when athlete B jogs at a speed of 3 m/s.
A trajectory taken at high speed from the sole side of the shoe. Figure 7 shows the trajectory of athlete B's one-step [change in the contact area of the sole] taken from the sole side of the shoe when running a marathon at a speed of 5 m/8. Otsushirograph (The sword is a one-step change in the load applied to each part of the sole when a large athlete jogs at 3 m/s: 1..1 Otsushirograph (I[)
is the one-step "load change applied to each part of the shoe sole" when a large athlete runs a marathon at 5 m/s. Otsushirograph (m) is a one-step "load change applied to each part of the shoe sole" when Athlete B jogs at 3 m/s. Otsushirogura 7 (ff) is a one-step "load change applied to each part of the sole" when athlete B runs a marathon at 5 m/s. Explanation of the symbols 1...Sole of athletic shoes, 2...Insole, zl...Adhesive or sewn part of the collar, 22...Outer edge of the insole, 23--Lower surface of the insole, 6... Foamed elastic body, 31... protruding body of heel road,
32... Supplementary protruding body, 4... Solid elastic body, 5... Extremely soft foamed elastic body, 6... Continuous part of solid elastic body and foamed elastic body, 7... Outer sole, 8... Adhesive or sewn portion between the hood and the periphery of the insole, 991. A... Side of the treading part, B... Heel road, 0... Arch road of the non-stepping part, (A... Vertical load, (Load in the front and back horizontal direction, (/) ...Horizontal left and right direction load, )...Body weight line ■Ground contact time, ■Time to weight level, ■Maximum impact pressure, ■Time to maximum impact pressure, ■Minimum pressure, ■Time to minimum pressure, ■Maximum thrust pressure (thrust) (19) @braking time @braking impulse J?ydt @average braking force Jpyat/braking time [phase] Maximum thrust force (kick force) ■Time to maximum thrust ■Propulsion Force time ■Propulsion impulse JIPydt ■Average propulsion force S-y yat/Propulsion force time @Synthetic impulse Jyyat-(-Jyyat) (1)...
・Rubber sponge middle part in Table 1 ・Rubber solid material in Table 1 (■) ・Rubber sponge (20) in Table 2 (1) to (26) "Shoes" photographed at high speed from the sole side Trajectory of “change in bottom contact area” Name of patent applicant Nippon Rubber Co., Ltd. (21) −(＼ q) () −ノ
()\rLI') (D Engraving of the drawing (no change in content) No. 8 (Do () Engraving of the drawing (no change in the content) Fig. q KC0 Engraving of the drawing (no change in the content) (O (support) ) (K□ 18v division (company) °papa'' 0,250 engraving of drawings (no changes in content) Fig. 11 water 9) '-> f4171.$r6T (average 0.l lC)
O.''. Procedural amendment (method) 21 Name of the invention Vvt'''Jffi 3゜Relationship with the case of the person making the amendment Address of the patentee 1-10-1 Kyobashi, Chuo-ku, Tokyo Name (443) Nippon Rubber Co., Ltd. November 12, 1981
Date: November 30, 1982 (shipment date) 5. Subject of correction ■ Ming $111117 Page 18-19 says "Otsushi 4 graph (1) and Figure 4" 1 Figure 4 and Figure 4 Figure 8”
Correct. ■Details 11! In lines 19 and 20 of f7 Hage, the text "Otscillograph (m) and Figure 6" is corrected to "Figure 6 and Figure 10." ■On page 118 of the details, lines 2 to 3, “Otsushirograph (T
1) and Figure 5'' should be corrected to ``Figure 5 and Figure 9''. ■On page 8 of the statement, lines 3 to 4, “Otsushirograph (W)”
and Fig. 7” should be corrected to “Fig. 7 and Fig. 11.” ■On page 8, line 9 of the specification [Otsushirograph (1) (m
)'J,! : Correct the text to "Figures 8 and 10." ■One Otsushirograph (η(■)) on page 8, line 16 of the specification
” has been corrected to 1 Figures 8 and 10. ■ Akira, $1 [1119, 1st line 2nd line to 5th line [Otscillograph (1) (I[I)J] is corrected to 1 Fig. 8 and 10. ■On page 9, line 8 of the statement [Otsushirograph (1) (m)]
"J" should be corrected to 1 "Figures 8 and 10". ■In page 9, line 9 of the specification, "Otsirograph (■)" should be corrected to "Figure 10." ■On page 9 of the statement, lines 12 to 16, “Otsushirograph (
n) (DI) (IV) 1 Figure 9, 1
Figures 0 and 11 have been corrected. 0 On page 10 of the specification, line 2 [Otsirograph (1) ~■
)” should be corrected to “Figures 8 to 11.” ■Page 18 of the specification, line 14 of 1 “Brief explanation of drawings” [
Correct the text ``Otsushirograph (η'') to ``Figure 8.'' (2) On page 18 of the O specification, in ``Brief explanation of the drawings,'' line 17, ``
Correct the text ``Otsushirograph (■)'' to ``Figure 9.'' ■On page 18 of the specification, line 20 of “Brief explanation of drawings” [
Correct the text ``Otsushirograph (■ Engineering)'' to ``Figure 10.'' ■In the third line of "Brief explanation of the drawings" on page 19 of the specification, "Oscillograph (■)" is corrected to [Figure 11, 4]. o In "Drawings", select [Osshi p graph (■), Osshi p graph (lr), Osshi p graph (■), Osshi graph (■)" [Fig. 8, Fig. 9, Fig. 10, Fig. 11] We have corrected this and attached the corrected drawing as shown in the attached sheet. Procedural amendment athletic shoe sole 3, name of person making the amendment (443) Nippon Rubber Co., Ltd. 5°6° S K630
1 0 type sand) has been corrected to read (Hardness of spring hardness test according to SRIS 0101). ■On page 6 of the specification, between line 12 and line 1'5, there is a message that says:
Spring hardness test by SR Engineering 50101) refers to the (Physical test method for expanding rubber - Spring hardness test of standard number 0101) of the Japan Rubber Institute Standards (SRIS). ” is inserted. ■Line 1-2 on page 15 of the statement (J Engineering S K6301
0 type sand scale) has been corrected to (Hardness of spring hardness test according to SRIS 0101). ■Page 17 lines 3 to 4 of the statement (J Engineering s K6301
0 type sand scale) has been corrected to (Hardness of spring hardness test according to SRIS 0101). (2) Attachment 2 Claim 1) In the sole 1 composed of the midsole 2 and the outsole 7, the hardness of the treading part side of the midsole lower surface 26 is 45 to 65 degrees (J engineering 5K).
6301 Type A hardness) solid elastic body 4 is provided protrudingly in the shape of the heel side B, and the protruding body 31 of the heel side B is further extended integrally along the outer edge 22 of the insole. The protruding bodies 32 are provided so as to be connected to the protruding bodies on the side A of the treading part 6, and the protruding body group 3
．． 2) In the sole 1 composed of the inner sole 2 and the outer sole 7, a hardness of 45 is applied to the treading part side A of the lower surface 23 of the inner sole. ~65 degrees (J-work 5K
6301 type A hardness) is provided in a protruding manner on the heel side B, and the protruding body 31 of the heel side B is integrally extended along the outer edge 22 of the insole. A protruding body 62 is provided in series with the protruding body 6 on the side A of the stepping part, and a hardness of 30 to 40 degrees (SRIS 0
1, characterized in that an extremely soft foamed elastic body 5 with a spring hardness test hardness according to 101) is additionally installed, and these protruding body groups 3.4.5 are covered to form an outer sole of 7 ft. Athletic shoe sole 1° (3)

Claims (1)

[Scope of Claims] 1) In the sole 1 composed of the inner sole 2 and the outer sole 7, the treading part side A of the lower surface 23 of the inner sole has a hardness of 45 to 65 degrees (JIS
A solid elastic body 4 having a hardness of K2SO3A type hardness) and a foamed elastic body 3 having a hardness of 40 to 80 degrees (JIS K2SO30 type sandness) protruding from the heel road B, respectively, are provided in a substantially disk shape, and further, the heel road B The protruding bodies 31 are integrally extended along the outer edge 22 of the insole, and auxiliary protruding bodies 32 are provided so as to be connected to the protruding bodies on the treading part side A, and the protruding body group 3 2) In the sole 1 composed of the inner sole 2 and the outer sole 7, a hardness is applied to the treading part side A of the lower surface 23 of the inner sole. 45-65 degrees (JIS
K6! A solid elastic body 4 with i01 A type hardness) and a foamed elastic body 3 with a hardness of 40 to 80 degrees (JIS K6501 type 0 sandness) protruding from the heel road B in a substantially disc shape, and,
An auxiliary protrusion 32, which is formed by integrally extending the protrusion 31 of the heel road B along the outer edge 22 of the insole, is provided so as to be continuous with the protrusion of the treading part side A, and further, Hardness of 30 to 40 degrees (JIS K2SO30 type sand degree)
A very soft foamed elastic body 5 is additionally installed, and these protruding body groups 3.
4. Athletic shoe sole 1° characterized by having an outer sole 7 formed by enveloping 5.