SE544284C2

SE544284C2 - Sole arrangement for an anti-slide shoe

Info

Publication number: SE544284C2
Application number: SE1950895A
Authority: SE
Inventors: Lars Nilsson
Original assignee: Grip Force Tech Ab
Priority date: 2016-12-27
Filing date: 2017-12-20
Publication date: 2022-03-29
Also published as: US20210330038A1; WO2018124958A1; SE1950895A1; CA3087159A1; CN110475491A

Abstract

The invention relates to a sole arrangement (10) for an anti-slid shoe (1), said sole arrangement comprising- an upper and a lower sole member (20, 50) wherein the lower sole member (50) is positioned closer to the ground during normal use of the sole arrangement and may form an outer sole of the shoe (1), wherein the lower sole member (50) is movably arranged in relation to the upper sole member (20) allowing the lower sole member (50) to move in a vertical direction in relation to the upper sole member (20), - at least one spike holding unit (15) configured to hold a spike member (8) in such a way that the spike member (8) extends in a substantially vertical direction inside the sole arrangement (10) and is movable in relation to the lower sole member (50), - a locking system comprising spacing means (12) and a movable locking plate (30) arranged between the upper and lower sole members (20, 50), said locking system being configured to control the vertical distance between the upper and lower sole members (20, 50) so as to, when set in a locked mode, prevent the spike member (8) from protruding through the lower sole member (50).

Description

Sole arrangement for an anti-slide shoe TECHNICAL FIELD The invention relates to a sole arrangement with retractable spikes for an anti-slid shoe.

BACKGROUND ART Anti-slid shoes with retractable spikes are known as such. WO2007/O37731 andWO2009/110822 disclose a particular variant where an upper and a lower sole are verticallymoveable in relation to each other allowing the spikes to protrude through the lower sole andwhere a slidable locking plate is used to lock the soles in relation to each other so as to prevent the spikes from protruding.

Although the principle of the shoes disclosed in these documents is promising there is a needfor improvements, for instance with regard to stability ofthe sole arrangement and the capability to prevent leakage.

SUMMARY OF THE INVENTION The invention relates to a sole arrangement for an anti-slid shoe, said sole arrangement comprising - an upper and a lower sole member wherein the lower sole member is positionedcloser to the ground during normal use of the sole arrangement and may form anouter sole of the shoe, wherein the lower sole member is movably arranged in relationto the upper sole member allowing the lower sole member to move in a vertical direction in relation to the upper sole member, - at least one spike holding unit configured to hold a spike member in such a way thatthe spike member extends in a substantially vertical direction inside the sole arrangement and is movable in relation to the lower sole member, 2- at least one spike opening in the lower sole member allowing a spike memberarranged in the spike holding unit to protrude downwards through the lower sole member, - a locking system comprising spacing means and a movable locking plate arrangedbetween the upper and lower sole members, said locking system being configured tocontrol the vertical distance between the upper and lower sole members so as to,when set in a locked mode, prevent the spike member from protruding through the lower sole member.

The invention is characterized in that the spike holding unit is arranged at the upper solemember, wherein the spike holding unit extends downwards through an opening in the locking plate or at a side thereof towards the spike opening.

This provides for the possibility to attach a spike member to the spike holding unit from anoutside (underside) of the lower sole member, i.e. through the outer sole of shoe into thespike holding unit. ln turn this simplifies sealing of the spike compared to e.g.WO2007/037731 in that a spike sealing member can press onto the underside of the lowersole member/outer sole. This arrangement also enables an enhanced stability of the structure as the upper and lower sole members can be connected via the spike holding unit, and via the spike member.

The invention is further characterized in that the spacing means are arranged between thelocking plate and the lower sole member and in that the upper sole member comprises anupper part and a lower part, wherein the lower part is made of a more rigid material than the upper part, wherein the two parts are moulded together. ln an embodiment of the invention the spike holding unit is provided with attachment meansallowing a spike to be detachably attached to the spike holding unit. This provides for the possibility to replace broken or worn out spikes. ln an embodiment ofthe invention the locking plate is fixed in a vertical direction in relation to the upper sole member, preferably the locking plate is attached to upper sole member. 3ln an embodiment of the invention the spike holding unit is fixed to an underside of the uppersole member, preferably the spike holding unit forms an integrated part of the upper sole member. ln an embodiment of the invention the lower sole member comprises a flexible membrane, wherein the spike opening is arranged in the membrane.ln an embodiment ofthe invention a spike member is attached to the spike holding unit. ln an embodiment of the invention the spike holding unit comprises an inner element provided with threads for connection to corresponding threads of the spike member. ln an embodiment of the invention the spike holding unit forms an integral part of the lower part of the upper sole member. ln an embodiment of the invention the locking plate is movable in a longitudinal direction ofthe sole arrangement between at least a first and a second position, wherein the spacingmeans defines a minimum distance between the upper and lower sole members in one of these positions. ln an embodiment of the invention the upper sole member is provided with at least oneconnection element and wherein the lower sole member is provided with a correspondingconnection element configured to be connected with the connection element on the upper sole member to provide a stabilizing connection between the two sole members.

The invention also concerns a shoe provided with a sole arrangement of the above type.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows an anti-slid shoe according to an embodiment ofthe invention.

Figure 2 shows, in an exploded view, a sole arrangement ofthe shoe according to figure 1.Figure 3 shows a sectional view of an assembled sole arrangement according to figure 2.

Figure 4 shows a spike member and a part of a spike holding unit according to the sole affaﬂgemefit.

DETAILED DESCRIPTION Figure 1 shows an anti-slid shoe 1 according to an embodiment ofthe invention. Figure 1 alsoshows parts of an upper sole member 20 connected via resilient bellows 7 to a lower solemember 50, and a handle 11 for controlling the position of a locking plate 30 (not shown in figure 1).

Figure 2 shows, in an exploded view, a sole arrangement 10 of the shoe 1 according to figure 1.Figure 3 shows a sectional view of an assembled sole arrangement 10 according to figure 2.

Figure 4 shows a spike member 8 and an inner part 19 of a spike holding unit 15 according to the sole arrangement 10.

The sole arrangement 10 comprises in general an upper sole member 20, a locking plate 30and a lower sole member 50. The lower sole member 50 is positioned closer to the groundduring normal use ofthe shoe 1 and forms an outer sole ofthe shoe 1. The lower sole member50 is movably arranged in relation to the upper sole member 20 allowing the lower sole member (50) to move in a vertical direction in relation to the upper sole member (20).

The upper sole member 20 comprises two major parts: an upper sole part 20a in this examplemade ofthermoplastic polyurethane (TPU) and a lower sole part 20b made of a more rigidmaterial, in this case polyoxymethylene (POM, also known as acetal). The upper and lowerparts 20a, 20b form an integral part produced by placing the lower part 20b in the mouldwhen producing/moulding the upper part 20a. Although the lower part 20b is more rigid it isdesigned to be sufficiently flexible to be bent and to provide for a comfortable sole member for a user of the shoe 1.

The underside of the upper sole member 20 is provided with a plurality of downwardlyextending spike holding units 15. These units 15 form integral parts of the lower part 20b ofthe upper sole member 20. The spike holding units 15 comprises an inner unit 19 that ismoulded in place inside detail 15 and that is provided with threads 22 corresponding to outer threads 18 provided onto an upper part of a spike member 8 (see figures 3-4). 5Each spike holding unit 15, 19 is configured to hold the spike member 8 in such a way that thespike member 8 extends in a substantially vertical direction inside the sole arrangement 10 and is movable in relation to the lower sole member 50.

Spike openings 16 are arranged in the lower sole member 50 allowing a corresponding spikemember 8 arranged in the spike holding unit 15, 19 to protrude downwards through the lowersole member 50 (see figure 3). Each spike opening 16 is arranged in a corresponding flexible membrane 4 arranged in the lower sole member 50.

Also the lower sole member 50 comprises two major parts: an upper sole part 50a made of amore rigid material, in this case polyamide (PA), and a lower sole part 50b made of TPU. Theupper and lower parts 50a, 50b of the lower sole member 50 form an integral part producedby placing the upper part 50a in the mould when producing/moulding the lower part 50b.Although the upper part 50a of the lower sole member 50 is more rigid it is designed to besufficiently flexible to be bent and to provide for a comfortable sole member for a user of the shoe 1.

The flexible membranes 4 form part of the more flexible lower part 50b of the lower sole member 50.

Upper part 50a of lower sole member 50 is provided with holes 9 adapted to surround the flexible membrane 4.

The sole arrangement 10 further comprises a locking system comprising spacing means 12 andthe movable locking plate 30 arranged between the upper and lower sole members 20, 50.The locking plate 30 is attached to the upper sole member 20 by means of screws (not shownin figures) arranged in longitudinally extending openings (not shown in the figures) in thelocking plate 30 to allow the locking plate 30 to move back and forth in the longitudinal direction of the shoe 1.

The spacing means 12 are arranged both on the lower side of the locking plate 30 and on theupper side of the lower sole member 50, more specifically on the upper side of the upper part 50a of the lower sole member 50, so as to face each other.

The locking system is configured to control the vertical distance between the upper and lower sole members 20, 50 so as to, when set in a locked mode, prevent the spike members 8 from 6protruding through the lower sole member 50. The principle for how the locking system worksis similar to what is described in WO2007/037731 and WO2009/110822: The locking plate 30can be moved, using the handle 11, between a first and a second longitudinal position. ln oneof these positions the upper and lower spacing means 12 are arranged at least partly on top ofeach other (which alternatively may be seen such as a certain spacing means and itscorresponding spacing means receiving opening on the corresponding sole member are atleast partly displaced in relation to each other) so that the spacing means 12 define aminimum distance between the locking plate 30 (and thus the upper sole member 20) and thelower sole member 50. ln this position the spike member 8 is prevented from protruding outdownwards from the lower sole member 50. ln the other position of the locking plate 30 theupper and lower spacing means 12 are longitudinally displaced in relation to each other(which alternatively may be seen such as a certain spacing means and its correspondingspacing means receiving opening on the corresponding sole member are aligned with eachother) so that, when the upper sole member 20 is pressed downwards towards the lower solemember 50 by, for instance, the weight of a user of the shoe, the upper and lower solemembers 20, 50 come closer to each other than the minimum distance with thecorresponding spacing means 12 positioned more or less side by side (or with one of thespacing means positioned in the corresponding spacing means opening). ln this position thespike member 8 is allowed to protrude downwards from the lower sole member 50. This position ofthe locking plate 30 is depicted in figure 3.

The locking plate 30 is made of a rather rigid material such as polyamide (PA) (but is designedto be bendable to allow the sole arrangement 10 to bend during use of the shoe 1). Thespacing means 12 form integral parts of either the locking plate 30 or the upper part 50a ofthe lower sole member 50 which also is made of a more rigid material. Thus the spacingmeans act distinctly onto each other when forming the minimum distance. Also the lower part20b of the upper sole member 20 is made of a more rigid material which has the advantagethat the friction between the locking plate 30 and the upper sole member 20 is low when moving the locking plate 30 between the two longitudinal positions.

The spacing means 12 include transversal bars and a system of smaller parts distributed over a larger area (see part 50a in figure 2). An advantage of distributing the spacing means 12 over a 7larger area is that the pressure onto the sole of the foot of a user also becomes distributed over a larger area which reduces the risk of discomfort.

Each spike holding unit 15 is arranged at the upper sole member 20 and extends downwardsthrough an opening 17 in the locking plate or at a side thereof towards the spike opening 16 arranged in the membrane 4.

As shown in figure 3 the spike member 8 is connected to the spike holding member 15, 19 via the spike opening 16, wherein the membrane 4 is used as a sealer.

The upper and lower sole members 20, 50 are also connected via two pairs of connectionelements 3a, 3b and 13a, 13b. The front pair 13a, 13b is arranged in front of the locking plate30. The more centrally positioned pair 3a, 3b connects to each other via a longitudinallyelongated opening (not clearly shown in figure 2) in the locking plate 30 (to allow longitudinalmovement of the locking plate 30). The upper connection elements 3a, 13a form integral partsofthe rigid material making up the lower part 20b of the upper sole member 20 (similar to thespike holding units 15). The lower connection elements 3b, 13b form integral parts of the rigidmaterial making up the upper part 50a of the lower sole member 50. Each pair of connectingelements is configured to receive the corresponding element so as to improve the stability ofthe sole arrangement 10. The central connecting elements 3a, 3b are configured to be hold together by means of a screw (not shown in the figures).

The inner unit 19 of the spike holding unit 15 is provided with attachment means in the formof threads 22 allowing a spike member 8 provided with corresponding threads to bedetachably attached to the spike holding unit 15, in this example to the inner part 19 of the spike holding unit 15.

As can be seen in figures 3 and 4 the spike member comprises at one end an outwardlyextending spike/stud/gripping part 6, at an opposite end a threaded attachment part 18 and awasher/plate 9 between the gripping part 6 and the attachment part 18. The threadedattachment part 18 and the washer/plate 9 form an integral unit made of stainless steel. Thisintegral unit has an axial hole into which the gripping part 6 is inserted/press fitted. The gripping part is made of hard metal (tungsten carbide). 8ln this example the spike member 8 comprises a collar 26 arranged at the washer/plate 9 that surrounds a part ofthe spike 6 and supports the spike 6.

As the spike member 8 is inserted through the spike opening 16 and attached by threadinginto the spike holding unit 15, 19, the washer/plate 9 is pressed onto the outer/lower side ofthe membrane 4 around the spike opening 16 which in turn presses onto the outer/lower sideof the spike holding unit 15 so as to form a sealing around the spike member 8 and avoid thatwater or dirt enters the sole arrangement 10. The washer/plate 9 is hexagonal to make it easyto attach and detach the spike member 8, which is useful, for instance, if worn put spike members 8 are to be replaced.

As can be seen or at least understood from figure 3, the flexible membrane 4 allows the spikemember 8 to move vertically in relation to the lower sole member 50 together with the upper sole member 20.

The locking plate 30 is fixed in a vertical direction in relation to the upper sole member 20 by means of being attached to the upper sole member 50 using screws.

The material of the locking sole plate 30 and the lower part 20b of the upper sole member 20is suitable for bringing about a low friction between these two details and for making integrated spike holding units 15 (for housing the inner part 19 of the holding units).

The membranes 4 are dome-shaped and have a centrally located spike opening 16 and are integrated with the (lower part 50b of) the lower sole member 50.

The resilient bellows 7, which forms an integral part of the lower sole member 50, isconnected to the upper sole members 20. The bellows 7 is flexible and allows the upper solemember 20 to come closer to the lower sole member 50 so that the spikes 8 can protrude through the underside ofthe lower sole member 50.

The invention is not limited by the embodiment described above but can be varied within thescope of the claims. For instance, the locking plate may be movable in other directions than the longitudinal direction.

Claims

1. Sole arrangement (10) for an anti-slid shoe (1), said sole arrangement comprising - an upper and a lower sole member (20, 50) wherein the lower sole member (50) ispositioned closer to the ground during normal use of the sole arrangement and mayform an outer sole of the shoe (1), wherein the lower sole member (50) is movablyarranged in relation to the upper sole member (20) allowing the lower sole member (50) to move in a vertical direction in relation to the upper sole member (20), - at least one spike holding unit (15) configured to hold a spike member (8) in such a waythat the spike member (8) extends in a substantially vertical direction inside the sole arrangement (10) and is movable in relation to the lower sole member (50), - at least one spike opening (16) in the lower sole member (50) allowing a spike member(8) arranged in the spike holding unit (15) to protrude downwards through the lower sole member (50), - a locking system comprising spacing means (12) and a movable locking plate (30)arranged between the upper and lower sole members (20, 50), said locking system beingconfigured to control the vertical distance between the upper and lower sole members(20, 50) so as to, when set in a locked mode, prevent the spike member (8) from protruding through the lower sole member (50), characterized in that the spike holding unit (15) is arranged at the upper sole member (20), wherein the spike holding unit (15) extends downwards through an opening (17) in the locking plate or at a side thereof towards the spike opening (16); xfvherešn the spacšnw means (12) are arranged betxfveen the Eockâng plate (30) ahcš the lower soie rherrtper (50), ariri xfvherešn the upper soâe member (20) compršses an upper part (203) and a lower part (Zßh), :wherein the lower part äs nwade ot a more ršgšcš material thare the upper part, vøhereiaw the tvtfo

2. :Jarts are rnoušderi traeether. 22. Sole arrangement (10) according to claim 1, wherein the spike holding unit (15) is providedwith attachment means (22) allowing a spike to be detachably attached to the spike holding unit.

3. Sole arrangement (10) according to claim 1 or 2, wherein the locking plate is fixed in a verticaldirection in relation to the upper sole member, preferably the locking plate is attached to upper sole member.

4. Sole arrangement (10) according to any one of the above claims, wherein the spike holdingunit (15) is fixed to an underside of the upper sole member (20), preferably the spike holding unit (15) forms an integrated part ofthe upper sole member (20).

5. Sole arrangement (10) according to any one of the above claims, wherein the lower sole member (50) comprises a flexible membrane (4), wherein the spike opening (16) is arranged in the membrane (4). §šå Sole arrangement (10) according to any one of the above claims, wherein a spike member (8) is attached to the spike holding unit (15). _23. Sole arrangement (10) according to any one of the above claims, wherein the spike holdingunit (15) comprises an inner element (19) provided with threads (22) for connection to corresponding threads of the spike member (8). -m-a-de-of--a--:hare--ršgid-:hate:fia-å--than--tla»a--ugaper-gaart;--w-hereän--tla»a--two--gaarts-aefe-mouEded-together. Sole arrangement (10) according to anv one of tšie above cEairraselaiaa-Q, wherein the spike holding unit (15) forms an integral part ofthe lower part (20b) of the upper sole member (20). 3%. Sole arrangement (10) according to any one of the above claims, wherein the locking plate(30) is movable in a longitudinal direction of the sole arrangement between at least a first anda second position, wherein the spacing means (12) defines a minimum distance between the upper and lower sole members (20, 50) in one of these positions. 3Qﬁfš. Sole arrangement (10) according to any one of the above claims, wherein the upper solemember (20) is provided with at least one connection element (3a,13a) and wherein the lowersole member (50) is provided with a corresponding connection element (3b,13b) configured tobe connected with the connection element on the upper sole member to provide a stabilizing 5 connection between the two sole members. Sole arrangement (10) according to any one of the above claims, wherein the spikemember (8) comprises a gripping spike (6), a threaded attachment part (18) for attachment tothe sole arrangement (10) and a washer/plate (9) arranged between the gripping part (6) and the attachment part (18) for providing sealing around the spike opening (16). I 10 Sole arrangement (10) according to claim wherein the threaded attachment part18 and the washer/plate (9) form an integral unit provided with an axial hole configured to receive an end portion of the gripping part spike (6). | Shoe (1) comprising a sole arrangement (10) according to anyone ofthe above claims.