JPS59115001A - Shoes - 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 The present invention relates to footwear, particularly sports shoes.

In response to today's great interest in sporting activities represented by jogging, road running, etc.
Various footwear have been developed for such activities. The footwear includes a sports shoe, in which the heel portion of the sole of the shoe has an insert of a material that gives it more flexibility or flexibility than the rest of the sole, and which improves shock absorption in the heel. However, there are some that provide a cushioning effect. Such inserts can be mounted, for example, in suitable recesses or recesses in the sole part.

In sports shoes such as those described in German Patent Application No. 2,152,465, the shoe consists of an outer sole part, a sole body part and an inner sole part. The main part of the sole, which constitutes the main part of the sole structure, is made of a flexible but relatively rigid plastic material that undergoes relatively slight deformation when subjected to the loads that occur during use of the shoe. . In the heel region of the sole body part, this sole body part has an opening that engages with an insert part of the flexible cushioning material, which is therefore much more flexible than the sole body part and which This provides a cushioning effect to the heel of the person wearing the shoes. The insert member is secured, for example by adhesive, to the edge of the aperture into which it is attached. Such a design structure is
The relatively hard sole body is intended to firmly hold the heel of the foot, but on the other hand, by supporting the heel flexibly, the heel bone is designed to prevent the shoe from making contact with the ground. When running, for example, the impact load is softened and cushioned. The insert member thus provides a partially flexible or flexible region in an otherwise rigid sole body portion.

In other sports shoes, such as the shoe described in German Patent Application No. 2, 904, 540 Danmei aS, the sole or sole assembly of the shoe is very flexible, curved, or flexible. It has a sole body part. In the heel region of the shoe, the sole assembly is made rigid by a support member generally parallel to the tread or ground engaging surface of the sole assembly and in the form of a small spring member.

The support members are replaceable and, since these support members reduce the flexibility of the sole of the shoe in the heel region to a certain extent, depending on the weight and running style of the user of the shoe and the nature of the surface on which the shoe is used. The degree of flexibility can be adjusted; running on hard surfaces, such as highways, typically requires a softer setting in the heel area to prevent heel crush injuries. Therefore, it is possible to adjust the cushioning capacity or cushioning effect of the sole in the heel region over a wide range from a soft state to a hard state.

In shoes of the first mentioned type with a rigid sole body part using flexible cushion inserts, there is no possibility of adjustment as described above. First, the heel of the person wearing the shoe is slightly co-supported by the edge of the opening in which the insert member is received, and the relatively hard sole body portion on which the heel rests is supported by the sole assembly. The reason is that the cushioning effect and flexibility of the sole cannot be greatly increased because the sole is only made flexible by the insert member located in the lower part of the bone. Secondly, since the flexible insert member and heel portion of the schiz sole assembly need to be joined together in one piece, it is also not possible to replace the insert member.

The object of the invention is to provide a shoe, in particular a sports shoe, in which the flexibility or suppleness of the sole in the heel region can be individually adjusted.

Another object of the invention is to provide a sports shoe with means for varying the hardness of the heel region without having a complicated M4 design.

Yet another object of the invention is to enable variations in the flexibility or cushioning effect of the sole over a small but significant portion of the heel area, thereby providing adequate support and cushioning to the heel of the user of the shoe.

Yet another object of the invention is to provide a pair of shoes in which the cushioning effect in the heel area can be adapted to specific individual requirements, yet withstands the stresses and loads that occur during use of the shoe. be.

According to the invention, these purposes include: the inner sole part;
This is accomplished by a spose shoe having a sole or sole assembly consisting of a sole body portion and an outer sole portion with a ground-engaging or tread surface. The heel region of the sole body portion is provided with an opening or housing for receiving an insert member of flexible or pliable material for providing shock absorbing support and cushioning to the heel of the shoe user. The sole body portion is made of a soft pliable or flexible plastics material, and the insert member is replaceably disposed within the frontage or housing of the sole body portion.

The insert member is inserted from the inside of the shoe through an opening provided in the inner sole portion of the heel region of the shoe.

By thus allowing attachment of the cushioning insert into the opening of the sole body or into the housing from the inside of the shoe, the insert has a large area relative to the total area of the heel portion of the sole assembly. This provides support for the entire heel of the shoe user. In addition, although the sole body is provided with an insert member and an opening or housing into which the insert member is inserted into the receiving side, the shoe is larger than the bar-shaped support member of the sports shoe in the second example. There is no difficulty in holding the insert member in the sole portion of the. This means that the insert member is held securely in place within its opening by the sole body itself to the F and lateral sides of the sole body, and that the foot of the person wearing the shoe is able to access the inner from above. This is because the member is held at a predetermined position in the sole body portion by itself.

In an embodiment of the invention, the opening in the medial sole portion of the sole assembly for snapping the insert member into place is designed to avoid the presence of edges or changes in the level of the medial sole portion, and to avoid the presence of edges or changes in the level of the medial sole portion. In order to avoid the build-up of local pressures that may be applied to the inserts, the inserts are reinserted once they have been fitted. Furthermore, the opening in the inner sole part of the shoe can thus be closed by a flap-like part of the inner sole part;
This is a cut-out in the inner sole part in the area of the opening for the insertion of the insert element, with which the flap-like element can be inserted into the inner sole part by suitable means, such as a hinge-like part of the inner sole part connected thereto. The sole part is connected to other parts. This design ensures that the notch in the medial sole portion mates precisely with the opening in the medial sole portion and does not cause discomfort when the flap is in a position to close the opening in the medial sole portion. There is no gap between the two parts of the inner sole part.

The insert member can have a variety of suitable shapes. Generally, for reasons of ease of manufacture, rounded or annular shapes are preferred for insert members so that the loads applied during shoe use are directed outward from the center of load application, such as the heel bone. It also has the effect of being evenly distributed.

A sole body made of a relatively flexible material, e.g. having a Shore hardness of only 35, surrounds the insert member and is capable of withstanding loads applied to the sole assembly due to the flexibility of the sole body. , preventing movement of the insert member within the sole assembly.

However, on the underside of the heel bone, the insert member has an aperture into which a portion of the sole body portion projects, and this projecting portion extends upwardly into an opening or housing in which the insert member is received. A protrusion may also be provided to secure and position the insert relative to the sole assembly. This means that the heel bone rests on the soft part of the sole body projecting into the center of the hard insert member, thereby partially flexibly supporting the heel bone protrusion.

Variations in the flexibility and cushioning effect of the sole assembly of the shoe according to the invention can be adjusted by the selection of the material of the insert member and the dimensions of its thickness. The selection of the material and thickness of the insert member can be combined if necessary. For example, if the thickness of the insert is only a fraction of the thickness of the sole body and the material of the sole body is below the insert, or if there is a void in the opening or housing that receives the insert. is present and filled with a material corresponding to that of the sole body, the degree of cushioning or flexibility of the sole assembly of the shoe can be very precisely tailored to the individual requirements of the wearer. It will be adjustable.

According to an embodiment of the invention, a gripping member or a tensioning member is attached to an inner side of the insert member forming an aperture or a flap member covering the housing to accommodate the insert member in order to facilitate removal and replacement of the insert member. Provided in the sole part. Each of the gripping members can be a flat longitudinal strip fixed to or integral with each of the insert and flap members, such that the flap member can be lifted by pulling on the gripping member and the insert member can be lifted by pulling on the gripping member. , likewise also pulled out of the housing of the sole body part by pulling on its gripping member.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to embodiments not shown in the accompanying drawings.

In Figure 2, shown as sports shoes
The shoe has an upper portion 1, an inner sole portion 2, a sole body portion 3 and an outer sole portion 4 having a suitably shaped tread surface or ground engaging surface. An insert sole 5 (indicated by iron wire in FIG. 1) is attached to the shoe above the inner sole portion 2.

The inner sole portion 2 is made of a suitable material, such as compressed fiber, and the sole body portion 3 is constructed of a relatively soft or flexible polyurethane foam having a Shore hardness of 35, for example. Abrasion-resistant rubber is used as the outer sole part 4.

In FIG. 2, a circular cutout 6 is formed in the inner sole portion 2. In FIG. The cutout 6 has, for example, an angle of approximately 3406°, thereby forming a cutout or flap-like portion 7 that is connected to the rest of the inner sole portion 2 by a narrow web portion 8. By lifting the flap part 7, an opening is created in the inner sole part 2, allowing access to the circular recess or housing 10 provided in the sole body part 3.

The recess 10 forms a housing for accommodating an insert member 12 which corresponds thereto in general dimensions and size, and the two fit snugly. Figures 3a and 3
In Figure b, the insert member 12 has a central hole 14 passing therethrough. As shown in FIG. 1, the sole body portion 3 includes an upwardly projecting columnar portion 13, which forms the center of the recess 10. As shown in FIG. It is clear from FIG. 2 that the columnar portion 13 is located at the center. Therefore, when the insert member 12 is fitted into the hole 10, the columnar portion 13 protrudes into the insert member 12 and substantially fills at least the central hole 14 thereof, thereby positioning the insert member 12 in a predetermined position.

The thickness of the insert member 12 corresponds to the depth of the recess or housing 10, and when the two are combined as shown in FIG.
are at least at the same height as the adjacent surfaces of the surface. When the insert member 12 is thus fitted into position in the recess 10, the flap-like portion 7 of the inner sole portion 2
is folded and pressed into place into the corresponding opening formed in the sole part by the notch 6, thereby covering the insert member 12 in the hole 10 and making it smooth and almost smooth on the inside of the shoe. The shoes form a surface that comfortably supports the feet of the shoe user. In FIG. 1, the part indicated by the solid line shows the shoe in a ready-to-use state, and the configuration within the broken line shows that the flap part 7 has been lifted for attachment and removal of the insert member 12. It shows the status of.

The insert member 12 has flexibility or bendability,
For example, it is made of a suitable cushioning material such as foamed polyurethane having a hardness greater than the Shore hardness of the sole body portion 3. It is therefore clear that by fitting a suitable insert 12 it is possible to vary the cushioning effect or flexibility of the heel area of the sole of the shoe. In the illustrated embodiment, the thickness of the insert 12 is only approximately half the thickness of the sole body part 3 in the heel region, as is clear from FIG. The insert member 12 of normal hardness is supported by the thin sole body portion 3 below it. However, if the recess or housing 10 is provided almost completely through the sole body portion 3 to reach the outer sole portion 4, the insert 1
can be set as one method corresponding to this. In this case, the cushioning effect of the sole assembly of the shoe is adjusted by appropriate selection of the material used for the insert member 12, for example with a Shore hardness of up to 65. It is also possible to arrange a plurality of insert members 12 of different hardness so that the overall thickness corresponds to the depth of the indentation 10. Also, when the recess 10 almost reaches the outer sole portion 4, it is possible to fit a hard insert member into the recess 10, which hard insert member is connected to the sole body portion 3, for example. A flexible insert of the same material can additionally be fitted into the recess 10 above, thereby allowing fine adjustment of the flexibility and cushioning effect of the insert in the heel area.

The flap portion 7 is arranged such that the flap portion 7 can be easily moved into the raised position shown within the break line in FIG.
It has a gripping or tensioning member in the form of a flat fibrous strip 15 which, when the flap portion 7 is in the position of closing the inner sole portion 2, as shown in solid lines in FIG. , one end is fixed to the lower surface of the flap portion 7. Also, when the flap part 7 is in the closed position, the band 15 remains above the inner sole part 2 and can be grasped with the fingers in order to lift the flap part 7.

For the same reason, in order to facilitate the installation and removal of the insert part 12, the insert part 12 has a gripping or pulling member 16 in the form of a strip, in which the insert part 12 fits into the sleeve 10; After the inner member is removed, it is possible to handle the inner member.

It is clear that the design structure described above does not have sharp changes in edges or levels that give rise to local pressure effects in the heel area of the inner sole part 2. this is,
It is also improved by the lower surface of the insert sole 5 comprising a recess or rib spanning over the housing 10. Since the insert sole 5 is made of a flexible material and has a small thickness, the reinforcing ribs do not have a noticeable effect on the buffering or cushioning of the bottom of the shoe.

As described above, the sports shoe according to the present invention allows the softness and flexibility of the sole of the shoe to be easily changed in the heel region without significantly increasing manufacturing costs. Furthermore, such a configuration does not increase the weight of the shoe.

Further, the above-mentioned embodiment is only an example of the suggestion of the technical idea of the present invention, and various modifications are possible, but the Shore hardness of the sole of the shoe can be within the range of 35 to 45, In addition, the shore hardness of the insert member is 35 to 6.
It can be within the range of 5.

[Brief explanation of drawings]

Fig. 1 is a side view of a sports shoe according to the present invention, taken in partial cross section along line I-I in Fig. 2; Fig. 2 shows the upper part of the shoe omitted for clarity of illustration; Figures 3a and 3b show a plan view of the inside of the heel area of the shoe, and sectional and plan views of an insert member for use in a shoe according to the invention; 1... Upper part of the shoe 2... Inner sole part 3
...Sole body part 4...Outer sole part 5.
... Insert sole 6 ... Notch 7 ...
・Flap part 8-... Web 10...
・Recess, housing

Claims (7)

[Claims] (1) a sole assembly including an inner sole portion, an outer sole portion and a sole body portion made of flexible plastic disposed between the two portions, the sole body portion being flexible in the heel region of the sole assembly; The inner sole portion also has an opening for removably receiving an insert of flexible material to provide shock-absorbing support for the heel of a user of the shoe, the inner sole portion also having an opening for accessing the heel area. The shoe has the following features: whereby the insert is removable from the inside of the shoe through the opening of the sole body, and the insert is replaceable. (2) The access opening of the inner sole part is formed by a part of the inner sole part partially cut out in the same shape, and the part corresponding to this opening constitutes the flap part of the inner sole part, and 2. The shoe according to claim 1, wherein the access opening is movable between a closed position and an open position where the access opening becomes an access opening for accessing the insert housing n-port. (3) The shoe according to claim 1, wherein the insert is provided with a tension member for facilitating removal. (4) The shoe according to claim 2, wherein the flap is provided with a tension member for facilitating its opening. (5) the insert comprises an opening that is less co-filled with a portion of the sole body portion in the area where the heel bone is located during use of the shoe, such that the insert then fits into the insert-receiving opening; Shoes according to claim 1. (6) The shoe according to claim 1, wherein an insert sole is provided in the inner sole portion, and a reinforcing lip is provided on the lower side of the insert sole in the region of the insert receiving opening. (7) The shoe according to claim 1, wherein the insert has an annular shape.