JPS61103401A - Spike shoes sole and its production - 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] (Industrial Application Field) This invention provides a good wearing feeling by changing the foam density of the heel, foot, and tread of the foamed bottom sole of sports shoes, especially golf shoes. The present invention relates to a spike sole that prevents the spikes of the tread portion from pushing up against the sole of the foot in local areas and improves the stability of the spikes, and a method for manufacturing the same.

[Conventional technology]

In the conventional golf shoe sole, the spike part and its base part constitute a bottom part having the same structure and the same physical properties, except for the presence or absence of embedded fittings for the spike. Therefore, the wearing feeling is poor and fatigue is high, and in particular, the resistance against pushing up of the spikes on the tread portion is weak, which significantly impairs the wearing feeling.

[1-Problems to be Solved by the Invention] In order to improve the above-mentioned conventional defects and obtain a spiked sole that provides a more suitable feeling of wearing, the lower sole inscribed in the outer sole (mid sole, A plastic or rubber foam such as polyvinyl acetal or polyurethane elastomer (111) is used in the open sole to provide appropriate cushioning to the heel area, where the most weight is applied, and from the heel of the lower sole to the foot of the lower sole. , it is necessary to configure the density difference so that the density of the foam increases toward the lower sole tread, and in particular to increase the density of the tread, which is most susceptible to the impact of spike thrusting. It is necessary to make the foam density at the top of the spike position higher than the foam density at the surrounding bottom tread portion to increase the resistance to the upward thrust of the spikes. In addition, in the combination of a foam lower sole and a hard outer sole made of polyurethane, thermoplastic plastic, rubber, etc., a mating configuration is required to increase the stability of the spikes. In this case, it is necessary to locally increase the wall thickness at the upper part of the fitting in order to increase the resistance to the pushing up of the fitting by the spikes.

[Means for solving problems]

As a method of increasing the density of the foam from the lower sole and heel of the foam toward the foot of the lower sole and the tread of the lower sole, a slab (31ab) of foam with the same degree of foaming is processed by skimming. Before molding, the heel, foot, and tread parts are processed into the required shape.1.The processed sole for the foamed lower sole is made to have a wall thickness that corresponds to the compression ratio, and the plastic outer sole is molded. In this method, a fitting metal odor of the spike is buried at the mounting position of the spike, a fixing protrusion locally thickly raised is formed on the inner upper part corresponding to the fitting metal fitting, and the outer sole and the foamed foam are connected to each other. Attach the bottom bottom with adhesive,
The foamed sole is inserted into the mold of the final shape, and the heel of the lower sole, foot of the lower sole, and tread of the lower sole are heated, compressed, and cooled at different compression rates depending on the degree of foaming of the foamed sole of the processed sole. A foam density difference is created so that the density is lowest at the heel and highest at the tread area, and the fixing protrusion on the fitting metal fitting on the outer sole is used to form a foam density difference in the lower part of the processed sole for the foamed lower sole. The sole of the spiked shoe is constructed by compression fitting and increasing the foam density in the corresponding area of the fitting metal fitting on the outer sole, fixing and integrating the outer sole and the foamed lower sole and molding them into the desired shape. The range of foam density is ○927 to 0.35 for the heel of the lower sole and 0.37 to 0 for the tread of the lower sole.
．． 501 The foam density of the bottom of the bottom is between the two, and the foam density of the fixing recess for the fixing protrusion on the outer sole of the bottom tread is 0.05 to 0.1 higher than the density of the bottom tread. Set to density range.

[Effect]

Unlike the conventional method, in which the bottom sole (mid sole, open sole) is simultaneously foamed by molding to form the bottom sole with the same degree of foaming, the mold is formed from slab foam with the same degree of foaming by skimming. The foamed soles of the processed soles before molding are heated at different compression ratios,
The heel of the lower sole, the foot of the lower sole, and the tread of the lower sole are each formed with different required foam densities, so the heel of the lower sole, where the heel carries the most weight, is given greater cushioning than other parts. Intermediate support and cushioning properties are formed at the base, and the foam density on the bottom tread and outer sole fittings is maximized to increase stable support, preventing spikes from pushing up. A good feeling of wearing is created.

Furthermore, by locally forming a thick fixing protrusion made of the outer sole material on the embedded upper part of the spike fitting metal tool of the hard outer sole, and compressing and fixing the protrusion to the lower part of the processed bottom. The foam around the fixed protrusion provides cushioning properties, and the spike does not become more rigid than necessary, providing a stable and suitable spike action and significantly increasing the resistance to spike thrusting. Spikes, etc., have suitable characteristics as a bottom.

〔Example〕

The invention will be explained in detail on the basis of exemplary drawings.

Figure 1 shows slabs of foam with the same foaming degree.
This figure shows the side view of a processed sole PS for the lower sole made of foam with a heel, foot, and tread formed by karaski processing.
1 is a lower sole heel portion, 2 is a lower sole foot portion, and 3 is a lower sole tread portion.

As an example of implementation, this processed sole PS was made of polyvinyl acetal and had a foaming density of 0.25. This processed sole PS is compressed and combined with the outer sole in a final shape mold to form a spiked shoe sole.

Therefore, in the processed sole PS, the compression ratio of the heel part 1 of the lower sole is the lowest, the tread part 3 of the lower sole is the highest, and the foot part of the lower sole is processed to a thickness corresponding to the respective compression ratios between the two. be done.

FIG. 2 shows a plan view of one back surface (ground plane side) of the outer sole O8, and FIG. 3 shows a cross section taken along the line ■--■ in FIG.

In this example, the outer sole O8 is made of hard plastic, such as thermoplastic polyurethane + J material, and the spikes are attached by embedding a spike fitting in the position and fixing it to the inner upper part of the fitting. It is formed by heating and molding using an outer sole mold to form a protrusion.

In the figure, 4 is the +m alloy tool of the spike buried in the outer sole, 5 is the embedded part of the fitting alloy tool, and 6 is a locally thick-walled part on the inner upper part of the fitting alloy tool 4 at the outer bottom U diagonal. It is a raised fixed protrusion.

Note that, although not shown in FIG. 2, a required anti-slip design is appropriately provided on the contact surface side of the outer sole. Further, the polyurethane sole of the outer sole O8 has a culmness of 95°±2° as measured by JIS spring type hardness tester A type.

Next, the above-mentioned processed sole PS for the foamed bottom sole and the above-mentioned outer sole O8
Apply urethane adhesive to the joints of the two sides and adhere them, and insert into an R-shaped mold to correspond to the lower heel part 1, the lower foot part 2, and the lower tread part 3, respectively. The foam is heated and compressed in the upper lid to a desired compression ratio, and then cooled to a predetermined compression ratio to increase the foam density from the heel to the tread surface.
Lower sole M with different appropriate foam densities in each part
This constitutes the sole of a spiked shoe that is integrated with the outer sole oS.

Figure 4 shows the lower MS of the integrated spike series bottom.
This figure shows a cross section of the lower sole MS corresponding to the cross-sectional view of the outer sole O8 in FIG. This is a fixed recess on the bottom MS. That is, the fixing protrusion 6 of the outer sole O8 and the fixing recess 7 of the lower sole MS provide strong integral fixation in terms of anchorage.

FIG. 5 shows a side view of the spiked shoe sole SO8 integrated with the lower sole MS and the outer sole O8.

In addition, when using other rubber-based or plastic-based materials for the bottom sole and outer sole, use an adhesive that is compatible with each material.

〔Effect of the invention〕

As explained above, the structure of the present invention is that the foam density of the lower heel and foot of the lower sole is changed in the tread portion of the lower sole, so that a suitable feeling of wearing can be obtained. The foaming density of the lower sole tread, which is most susceptible to the effects of spikes, is made higher, and a fixing recess with a higher foaming density is formed. By forming a thick fixing protrusion in the outer sole material and integrating the fixing protrusion with the fixing recess in the lower sole made of foam, the influence of the spikes from pushing up can be prevented. Not only is it effective, but it also determines the effect of obtaining desirable characteristics as a spiked shoe sole, such as obtaining appropriate cushioning properties and stable and suitable spike action without making the spikes more rigid than necessary. .

[Brief explanation of drawings]

Fig. 1 is a side view of a processed sole for the foam lower sole of the Spike Shikoz sole of the present invention, Fig. 2 is a plan view of the back side of the outer sole, and Fig. 3 is the I [ FIG. 4 is a cross-sectional view of the lower sole when integrated with the outer sole of the spiked Shicose sole, and FIG. 5 is a side view of the spiked Shicose sole. PS... Processed sole O8... Outer sole M S...
Lower sole SO8... Spike shoe sole 1... Lower sole heel portion 2... Lower sole foot portion 3.
... Lower bottom tread part 4 ... Fitting metal fitting 5 ... Burying part of fitting metal fitting 6 ... Fixing part 7... Four fixing parts

Claims (2)

[Claims] (1) In spike shoe soles consisting of a foam lower sole and a highly hard outer sole, the heel of the lower sole is foamed by changing the compression ratio of the heel of the lower sole, foot of the lower sole, and tread of the lower sole. Density: 0.27 to 0.35, bottom tread: 0.37
~0.50, the foaming density of the lower bottom part is between the two,
The foaming density of the fixing recess on the bottom tread is set in a range of 0.05 to 0.1 higher than the density of the bottom tread, and a fixing protrusion is formed at the upper part of the inside where the spike fittings are buried. A spiked shoe sole in which a fixing protrusion on the outer sole and a fixing recess on the lower sole of the foam are integrated by adhesive. (2) Heel and foot parts of dimensions obtained by adding the required compression ratio by skimming from slabs of foam with the same degree of foaming.
A machined sole for the lower sole with a tread formed thereon is manufactured, and on the other hand, during molding of a hard outer sole material, a fitting metal fitting for the spike is buried in the spike attachment position, and the inner side of the embedded part of the fitting metal fitting is buried in the spike attachment position. The outer sole is heated and molded to form a fixing protrusion of the outer sole material on the upper part, and the outer sole and the processed sole for the lower sole are bonded together with an adhesive, and inserted into a mold for the final shape.
The heel of the lower sole, foot of the lower sole, and tread of the lower sole are heated, compressed, and cooled at different compression rates to create a foam density difference such that the foam density is lowest at the heel and highest at the tread. At the same time, the fixing protrusion on the fitting tool on the outer sole is heated and compressed to the lower part of the foam on the processed sole to increase the local foam density at the corresponding position of the fitting tool on the outer sole. A method for manufacturing spiked shoes characterized by integrally bonding and forming a foamed bottom sole into a desired shape.