CN102438475A

CN102438475A - Human body-balancing footwear capable of preventing knock-knees and providing cushioning suitable for the weight of wearer

Info

Publication number: CN102438475A
Application number: CN2010800223118A
Authority: CN
Inventors: 权赫守
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-21
Filing date: 2010-05-20
Publication date: 2012-05-02
Also published as: US20120060394A1; JP2012527297A; WO2010134776A2; KR101131280B1; KR20100125548A; WO2010134776A3

Abstract

The present invention relates to footwear (including shoes, sneakers and the like, and hereinafter, referred to as "footwear") which is produced on the basis of ergonomics, and which comprises: a heel arranged at a rear bottom of a sole; and an impact-absorbing cap detachably coupled to the heel. The footwear according to the present invention absorbs external impacts generated during walking as much as possible over three stages. The heel of the footwear of the present invention can be separated into a left part and a right part, and is replaceable at any time. Thus, the footwear of the present invention prevents deformation in the ankle joint and knock-knees caused by a difference in wear between the two heels of shoes.

Description

Prevention O type or X type leg also provides the total balance of the body footwear of the buffer part that is fit to user's body weight

Technical field

The present invention relates to footwear according to ergonomics, more detailed, relate to following ergonomics footwear; Absorb the external impact that the people produces through three times when walking; Thereby a lateral wearing of prevention heel of a shoe gets and the ankle joint is twisted gradually the shank joint is exerted an influence, and especially prevents the teen-age leg of growth stage to be deformed into the leg of O type or X type, helps all crowds can keep balance; The buffer part that is fit to user's body weight is provided, thereby maximum comfortableness is provided.

Background technology

With regard to the footwear of general use; No matter be leather shoes or sport footwear; Because the s heel portion of most sole is divided with preceding bottom and separated fully, therefore moving of body weight can not connect naturally when walking, and has heavy inconvenience of walking lentamente; And because the heel end portion is outstanding with the right angle, the situation of the heavier impact that therefore outstanding part generation is useless is more.

And, in order body weight to be moved connect naturally and make for the footwear of sole overall flat, even be crushed on sole because of less object; Whole pressure etc. also can be provided and cause inconvenience; For the central portion of sole for the outstanding footwear of convex, owing under the situation of the motion of ignoring the ankle joint fully, design, therefore if the user does not carry out considerable exercise; Then be difficult to keep the posture of walking stably; And standing for a long time or more the utilization under the situation of public transport, owing to be difficult to keep the balance of health, the therefore problem of the more power of existences needs.

And; Because the buffer part of all footwear is ignored user's body weight fully and is uniformly used spring or other buffer part material; Therefore when the lighter people of body weight uses, can act as harder; When the heavier people of body weight uses, the discommodity that normally to realize the buffer part function can be become, the effect of simple foot-binding cloth can only be played.

And; The buffer part of footwear in the past helps to absorb for the crowd with average weight very much impacts; But can not realize the moving of body weight of nature; One side that can not prevent heel of a shoe is worn earlier, can cause the variation in ankle joint, and the variation that especially becomes because of the teen-age ankle joint of growth stage makes leg be deformed into the reason of O type or X type leg.

And then, can destroy the balance of user's whole health, can produce unusually to health, the solution to this can't be provided up to now.

Summary of the invention

Technical task

The present invention proposes in order to remove this inconvenience, the objective of the invention is to develop following ergonomics footwear, promptly; The heel of footwear forms the shape identical with people's heel being provided with under the state of impact absorption lid, move in order to carry out body weight naturally, from the heel to footwear before the bottom divide; Arch shape along pin flatly connects between the outside and preceding bottom of heel; Thereby the body weight that realizes nature moves, and " body weight customization type buffer part " is provided, and makes light people of body weight or heavy people, has the sensation that can feel the most comfortable per capita of average weight; Form the shape of the people's who is similar to complete health sole through form with sole; Even also can become on foot as the comfortable state of walking in bare feet as the place of softness, suitably improve the Outboard Sections of footwear, thereby when bipod is walked on one's feet or a little separately, also make each bone of ankle and leg become straight line thereby wear footwear; Through this footwear are provided; The pin of living in modern people and the health of joint even whole health are contributed, and the teenager that especially can prevent the growth stage is affected in the ankle joint because of the distortion of heel of a shoe, thereby is deformed into O type leg or X type leg gradually.

Technical solution

In order to achieve the above object, prevention of the present invention O type or X type leg and provide the total balance of the body footwear of the buffer part of the body weight that is fit to the user to comprise: the heel that is arranged on the back bottom of sole; And the impact absorption lid that can be combined in above-mentioned heel with loading and unloading.

And above-mentioned impact absorption lid comprises first lid that is incorporated into outside portion corresponding with the outside of pin in the above-mentioned heel and is incorporated into second lid with the inboard corresponding inside portion of pin, and above-mentioned first covers and second cover and can change.

In addition, above-mentioned impact absorption lid comprises: first buffer part that is incorporated into the bottom surface of above-mentioned heel; Be incorporated into second buffer part of the back of above-mentioned heel; And the 3rd buffer part that connects above-mentioned first buffer part and above-mentioned second buffer part sleekly.

At this; In order to make when the wearer walks; Keep the balance of human body and form the stable posture of walking by shin bone; And when standing, support body weight and prevent that wearer's pin from becoming flatfoot, comprise that further in the above-mentioned heel edge corresponding with the outside of pin connects the attaching parts between the preceding bottom of above-mentioned heel and above-mentioned sole by shin bone.

Prepare the mutually different above-mentioned impact absorption lid of a plurality of impact absorption intensity, can be according to wearer's body weight, some in above-mentioned a plurality of impact absorption lids optionally is incorporated into above-mentioned heel.

And, further comprising the impact absorption unit on the top that is arranged on above-mentioned sole, above-mentioned impact absorption unit comprises: the first buffering rib of arranging " " shape on the surface that is arranged on heel parts; Be arranged on first ribs of "+" shape of the centre of the above-mentioned first buffering rib; Arrangement be arranged on foot bottom the surface " " shape second the buffering rib; Be arranged on second ribs of "+" shape of the centre of the above-mentioned second buffering rib; Be arranged on that the above-mentioned first buffering rib intersects with above-mentioned first ribs and the buffering ball at the position that contacts with heel; Be formed at a plurality of ostiums of the bottom surface between above-mentioned first buffering rib and above-mentioned first ribs; The outside side face of above-mentioned heel parts erect wall portion and with the part of above-mentioned foot bottom boundary sidelong to the distribution passage that forms; Be arranged on the part of distinguishing above-mentioned distribution passage and above-mentioned foot bottom, and have the feed path wall of a plurality of feed paths; And be formed at above-mentioned foot bottom and the air duct that is connected with above-mentioned feed path wall.

And, form the attaching parts that flatly are connected to the preceding bottom branch of sole from heel in the anterior outside of heel of a shoe, move carrying out body weight naturally; The function of performance shin bone (the 5th matsurface of Lisfrac's joint or metatarsal); The balance that when body weight moves, can keep health preferably, thus when the wearer walks, keep the balance of human body and form the stable posture of walking by shin bone; When standing, support body weight and can prevent that wearer's pin from becoming flatfoot by shin bone.

Beneficial effect

Above-mentioned prevention O type or X type leg of the present invention also provides the total balance of the body footwear of the buffer part of the body weight that is fit to the user that following effect is arranged.

The first, through having the heel of a shoe with the similar form of heel of human body, can carry out the most natural walking that walks with naked feet like human body; Make heel become slick and sly and once reduce external impact with human body heel shape with the outstanding angle in right angle; The elasticity of the softness through " impact absorption lid ", secondary ground absorbs and impacts when heel touches ground, therefore not only realizes the protection in sole and joint; Can also reduce accumulative total and impact the fatigue that causes, can make daily life become comfortable.

The second, because " impact absorption lid " left and right separation can be changed at any time; Therefore because the posture of walking is bad a lateral wearing can change the left and right balance of adjustment footwear immediately faster under the situation; Therefore can prevent the ankle joint to twist and have influence on leg in advance because of heel of a shoe crooked; Make the teenager of growth stage become O type or X type leg gradually, finally can also prevent problem because of the distortion generation of vertebra, therefore very effective for keeping normal total balance of the body.

The 3rd, footwear itself can provide " body weight customization type buffer part ", therefore very heavy people or very light people, or have an average weight can select to use buffer part per capita to own the most comfortable, therefore very effective to the protection in sole or joint.

The 4th, the bottom surface through footwear becomes and the flourishing roughly similar form of sole shape that becomes most convenient in the human body evolutionary process, and becoming to human body provides as walking the ergonomics footwear of the comfort as the place of softness in bare feet.

The 5th; Especially the heel of leather shoes can prevent the distortion in ankle joint often to need replacing one lateral wearing to get faster; But existing footwear can not be changed heel and maybe need arrive the more money of room payment of mending shoes and change, so the time goes up, pecuniary waste is more, but for the footwear that are provided with " impact absorption lid "; Can be in or office changes use simply, therefore in time or very economical on the money.

Thereby; The total balance of the body footwear of prevention of the present invention O type or X type leg are made the pattern of ergonomic; Provide so far other footwear experience fully less than comfort; Especially not only protect sole and joint, can also protect vertebra, therefore except the teenager of growth stage, the adult is also had use value.

Description of drawings

Fig. 1 is the upward view of total balance of the body footwear of the present invention.

Fig. 2 is the cutaway view along the I-I line of total balance of the body footwear of the present invention.

Fig. 3 is the cutaway view along the II-II line of total balance of the body footwear of the present invention.

Fig. 4 is the upward view of removing the impact absorption lid of total balance of the body footwear of the present invention.

Fig. 5 is the stereogram of other embodiments of the impact absorption lid of expression total balance of the body footwear of the present invention.

Fig. 6 is the amplification view of the heel of expression total balance of the body footwear of the present invention.

Fig. 7 is the amplification view of the impact absorption lid of expression total balance of the body footwear of the present invention.

Fig. 8 is the upward view of impact absorption of the present invention unit.

Fig. 9 is the vertical view of impact absorption of the present invention unit.

Figure 10 is the III-III line cutaway view of Fig. 8.

Figure 11 is the IV-IV line cutaway view of Fig. 8.

Figure 12 is the C portion cutaway view of Fig. 8.

The specific embodiment

Present invention will be described in detail with reference to the accompanying as follows.

To shown in Figure 3, total balance of the body footwear 100 of the present invention comprise: the vamp 110 that wraps up and hold pin like Fig. 1; The interior pad (not shown) that stacks gradually in the bottom of vamp 110; The interior end 120; And sole 130, the heel 140 that can further possess the back bottom that is arranged on sole 130 covers 150 with the impact absorption that is incorporated into heel 140.

Impact absorption lid 150 is used for to heel 140 pooling feature being provided, and is applied to the impact of heel 140 with absorption, changes in case of necessity, is preferably formed by elasticity rate heel 140 big materials.

Continuation describes with reference to Fig. 4; Impact absorption lid 150 can comprise first lid, 151 and second lid 152; First lid 151 is incorporated into outside portion corresponding with the outside of pin in the heel 140 141, the second and covers the 152 inboard corresponding inside portions 142 that are incorporated in the heel 140 with pin.

This impact absorption lid 150 releasably is incorporated into heel 140; Can cover in impact absorption for this reason and form the first combination projection 151a and the second combination projection 151b on the lid of first in 150 151, form the first engagement groove 141a and the second engagement groove 141b that make first of first lid 151 combine the projection 151a and the second combination projection 151b to insert respectively in the outside portion 141 of heel 140.

At this moment; The preferred first engagement groove 141a is formed at the place ahead sidewall of heel 140; The second engagement groove 141b is formed at the rear sidewall of heel 140, and in order to improve adhesion, first combines projection 151a and second to combine projection 151b can form the form of front end bending.

And; Can cover in impact absorption and be formed with the 3rd on second in 150 lid 152 and combine projection 152a and the 4th to combine projection 152b, be formed with the 3rd engagement groove 142a and the 4th engagement groove 142b that make the 3rd of second lid 152 combine projection 152a and the 4th to combine projection 152b to insert respectively in the inside portion 142 of heel 140.

At this moment; Preferred the 3rd engagement groove 142a is formed at the place ahead sidewall of heel 140; The 4th engagement groove 142b is formed at the rear sidewall of heel 140, and in order to improve adhesion, the 3rd combines projection 152a and the 4th to combine projection 152b can form the form of front end bending.

At this, as other embodiments, can cover in impact absorption and form engagement groove on 150, on heel 140, form the combination projection.

On the other hand; As shown in Figure 5; According to embodiment can be following structure; First lid 151 possesses the insertion projection 151c that prolongs along the edge and form, and forming in the outside portion 141 of heel 140 is the insertion groove 141c that the sidewall of outside portion 141 prolongs along the sidewall of heel 140, more in detail, thus in this insertion groove 141c insertion projection 151c and combining with it.Thus, can realize that first lid 151 covers heel 140 on the whole and combines.At this, second lid 152 can form and the identical form of above-mentioned first lid, therefore omits its detailed description.

Because impact absorption lid 150 so releasably is incorporated into heel 140, therefore can regulate the impact absorption intensity of impact absorption lid 150 according to user's body weight.

That is to say; For the body weight according to the user absorbs impact the most perfectly; Make the different each other a plurality of impact absorption lids 150 of intensity, optionally be installed on the heel 140, can make the heavier people of body weight or lighter can experience comfort per capita according to user's body weight.

Because this moment, impact absorption lid 150 was divided into first lid, 151 and second lid 152, therefore can optionally change at least one that first lid 151 and second covers in 152.

Explain as follows that with reference to Fig. 6 and Fig. 7 first lid 151 in the impact absorption lid 150 of the present invention comprises: the first buffer part 151d that is incorporated into the bottom surface of heel 140; Be incorporated into the second buffer part 151e of the back of heel 140; And the 3rd buffer part 151f that connects above-mentioned first buffer part 151d and the above-mentioned second buffer part 151e sleekly, thereby bottom surface and the back that can be arranged to wrap up heel 140.At this, second lid 152 in the impact absorption lid 150 can form with the shape of first lid 151 accordingly, therefore omits its detailed description.

And; Total balance of the body footwear 100 of the present invention may further include attaching parts 160, and this attaching parts 160 edge corresponding with the outside of pin in the heel 140 connects between the preceding bottom of heel 140 and sole 130, thereby when the wearer walks; Keep the balance of human body and form the stable posture of walking by shin bone; When standing, make shin bone support body weight, thereby the pin that can prevent the wearer become flatfoot.

At this moment, be preferably formed to separating predetermined space between heel 140 and the attaching parts 160, this is in order to ensure combining projection 151 to be attached to the space of the first engagement groove 141a with first.

On the other hand, total balance of the body footwear 100 of the present invention can further possess the impact absorption unit 200 of the upside that is arranged on sole 130, and the end 120 or interior pad used in this impact absorption unit 200 can be used as.

Explain as follows that with reference to Fig. 8 to Figure 10 impact absorption of the present invention unit 200 comprises heel parts 210 and foot bottom 220, is provided with the feed path wall 222 with feed path 223 in its boundary section, by material moulding such as silicon, rubber, polyurethane.

Heel parts 210 forms with calcaneal shape; Shown in figure 11; Be disposed with the first buffering rib 212 of " " shape on its surface; Be provided with first ribs 213 of "+" shape in the centre of each first buffering rib 212, the position that intersects in each the first buffering rib 212 and first ribs 213 is provided with buffering ball 214.

And the bottom surface between the first buffering rib 212 and first ribs 213 is formed with a plurality of ostiums 211.

Buffering ball 214, the first buffering rib 212, first ribs 213 form the shape that top is narrow, the bottom is wide, and the height of buffering ball 214 is about about 7mm, and the height of buffering rib 212 is about about 6mm, and the height of ribs 213 is about about 5mm.

Therefore, utilize the first buffering rib 212, first ribs 213 and buffering ball 214 to have stage multi-buffer function as the heel parts 210 of the part that contacts with heel.

And, on the outside side face of heel parts 210, erect the wall portion that is provided with, distributing passage 215 to being formed with sidelong with the part of foot bottom 120 boundary.

Foot bottom 220 forms with the bottom shape except calcaneal pin; Shown in figure 12; Be disposed with the second buffering rib 224 of " " shape on its surface; Centre at each second buffering rib 224 is provided with second ribs 225 of "+" shape, and the horizontal and vertical height of being arranged to second ribs 225 has nothing in common with each other, and portion 220 forms at least three air ducts 221 more longways towards the front side of pin under foot.

And, shown in figure 10, be provided with feed path wall 222 in the part of distinguishing distribution passage 215 and foot bottom 220 with feed path 223, these feed paths 223 are connected with air duct 221 and form.

Upper surface (interior pad or the face that contacts with sole) in impact absorption unit 200 is formed with a plurality of lines, the user can be cut off according to the size of pin use, and in order to prevent in total balance of the body footwear 100, to slide, has carried out matsurface and has handled and form.

The impact absorption of the present invention unit 200 that so constitutes makes through injection or moulding; The first buffering rib 212 and first ribs 213 are arranged on the surface of heel parts 210 across; The second buffering rib 224 and second ribs 225 are arranged on the surface of foot bottom 220 across; And the horizontal and vertical height that foot bottom 220 forms second ribs 225 has nothing in common with each other, aspect ratio second ribs 225 height of the second buffering rib 224.And, in first buffering rib 212 and first ribs 213 of heel parts 210 buffering ball 214 is set, form the aspect ratio first buffering rib 212 height of buffering ball 214, it is low that the aspect ratio first of first ribs 213 cushions rib 212.

The first buffering rib 212, the second buffering rib 224, first ribs 213, second ribs 225 and buffering ball 214 form that top is narrow, the bottom is wide; The height of stage multi-buffer portion is low along with to foot bottom ground being set from heel parts 210; Form flat grade; When lifting heel, air flows into through each ostium 211, when heel contacts with ground; Because user's body weight; Ostium 211 is blocked, and leaked-in air supplies to the front side of total balance of the body footwear 100, and this moment, air supplied between the toe through ostium 211, heel parts 210, distribution passage 215, the feed path 213 of feed path wall 222 and the air duct 221 of foot bottom 220.

Thereby, form wind by the strong hand in total balance of the body footwear 100 inside, and the air of the inside of exchange total balance of the body footwear 200, realize the stage multi-buffer function that the height in the total balance of the body footwear 200 has nothing in common with each other simultaneously.

This impact absorption of the present invention unit 200 is shifted the hot-air of sole side onto the instep side and is discharged to outside the total balance of the body footwear 100; Therefore can reduce total balance of the body footwear 100 temperature inside definitely and keep; Make sole more nice and cool simultaneously, and, therefore can prevent beriberi, eczema etc. owing to discharge a large amount of moistures with hot-air; It is smelly significantly to reduce pin, and many sales force of the time of can help the diabetic, walking about, other are because of the many smelly more serious people of pin of sweat.

And; First buffering rib 212, first ribs 213 and the buffering ball 214 by heel parts 210; The multi-buffer function of implementation phase formula, through this stage multi-buffer, as as walking on the lawn of softness make pin comfortable; Can eliminate from the fatigue of impacting, and eliminate the calcaneal cutin of human body through the comfortable sex massage of pushing.

Impact absorption so of the present invention unit 200 can be provided with each other different a plurality of of intensity; Body weight with according to the user can absorb impact the most perfectly; Body weight according to the user optionally is installed on the total balance of the body footwear 100, can make the heavier people of body weight or lighter can experience comfort per capita.

Next the function and the effect of total balance of the body footwear of the present invention are described.

The first engagement groove 141a and the second engagement groove 141a that combine projection 151a and second to combine projection 151b to insert the outside portion 141 of heel 140 respectively owing to first of first lid 151 in the impact absorption lid 150 fix; The 3rd of second lid 152 combine projection 152a and the 4th combine projection 152b insert respectively heel 140 inside portion 142 the 3rd engagement groove 142a and the 4th engagement groove 142b and fix; Therefore; Even do not use other bonding agent; Also can be easily impact absorption lid 150 be attached to heel 140, in first lid, 151 and second lid 152 some wear and tear faster under the situation, can optionally only change accordingly and cover.

And, through the attaching parts 160 that between the preceding bottom of heel 140 and sole 130, possessed, the outside of heel 140 is connected with the preceding bottom flat ground of sole 130,, body weight can not break off when moving, can activate the shin bone function.

And; The people is for walking; The place ahead of at first under the state that the ankle of the leg of a side launches a little, marching toward, the pin that steps forward to a certain degree can contact with ground, and this moment, the end with the outstanding heel in right angle can provide useless impact; Therefore the heel degree with the people forms sleekly, thereby reduces unnecessary impact.

Contact with ground since a batter, in the time of whole body forward side shifting body weight, the ankle joint becomes acute angle through the right angle; Push the forward part of pin to and form propulsive force; Like this left and right repetition by turns and form posture on foot, and for most footwear so far, heel can separate with the mode that forms step with the preceding bottom of sole fully; Body weight moves in the centre to be broken off; Can heavyly walk lentamente, or sole integral body is flattened, there is the drawback that makes proprietary pin become recessed foot (bow type foot) or flat flat foot (flatfoot) in the result.

But; Total balance of the body footwear 100 of the present invention and people's heel forms heel 140 slick and sly similarly and once reduces impact; And by being divided into left and right two and the elastic force secondary ground of softness that covers the impact absorption lid 150 of heel 140 absorbs impact; Utilization absorbs impact 200 3 times as the impact absorption unit of the interior end 120 or the use of interior pad; Therefore can expect to try hard to keep at the bottom of the spats and the joint, especially be divided into left and right and impact absorption lid 150 is set, therefore wear and tear to such an extent that can change simply under the situation faster and keep the balance of footwear some at heel 140 with almost perfect impact absorption; Can prevent distortion because of the more and crooked ankle joint that footwear caused of a lateral wearing of heel 140; And can prevent the deformation effect in ankle joint to make the teenager of growth stage be deformed into O type or X type leg to leg joint, and also can make the adult keep correct balance, not only can give more help to health; But also, can provide the wearer to walk in bare feet in lawny comfortable sensation through the buffer part of the body weight that is fit to the wearer is provided.

Claims

1. total balance of the body footwear that prevent O type or X type leg comprise:

Be arranged on the heel of the back bottom of sole; And

Can be combined in the impact absorption lid of above-mentioned heel with loading and unloading.

2. the total balance of the body footwear of prevention O type according to claim 1 or X type leg is characterized in that,

Above-mentioned impact absorption lid comprises being incorporated in the above-mentioned heel with first lid of the inboard corresponding inside portion of pin and being incorporated into second of corresponding outside portion, the outside of pin and covers, and above-mentioned first covers and second cover and can change.

3. the total balance of the body footwear of prevention O type according to claim 1 or X type leg is characterized in that,

Above-mentioned impact absorption lid comprises: first buffer part that is incorporated into the bottom surface of above-mentioned heel; Be incorporated into second buffer part of the back of above-mentioned heel; And the 3rd buffer part that connects above-mentioned first buffer part and above-mentioned second buffer part sleekly.

4. the total balance of the body footwear of prevention O type according to claim 1 or X type leg is characterized in that,

Comprise that further in the above-mentioned heel edge corresponding with the outside of pin connects the attaching parts between the preceding bottom of above-mentioned heel and above-mentioned sole; Thereby can be when the wearer walks; Keep the balance of human body and form the stable posture of walking by shin bone; And when standing, support body weight and prevent that wearer's pin from becoming flatfoot by shin bone.

5. the total balance of the body footwear of prevention O type according to claim 1 or X type leg is characterized in that,

Prepare the mutually different impact absorption lid of a plurality of impact absorption intensity, according to wearer's body weight, some in above-mentioned a plurality of impact absorption lids optionally is incorporated into above-mentioned heel.

6. the total balance of the body footwear of prevention O type according to claim 1 or X type leg is characterized in that,

The impact absorption unit that further comprises the top that is arranged on above-mentioned sole,

Above-mentioned impact absorption unit comprises:

Arrangement be arranged on heel parts the surface " " shape first the buffering rib;

Be arranged on first ribs of "+" shape of the centre of the above-mentioned first buffering rib;

Arrangement be arranged on foot bottom the surface " " shape second the buffering rib;

Be arranged on second ribs of "+" shape of the centre of the above-mentioned second buffering rib;

Be arranged on that the above-mentioned first buffering rib intersects with above-mentioned first ribs and the buffering ball at the position that contacts with heel;

Be formed at a plurality of ostiums of the bottom surface between above-mentioned first buffering rib and above-mentioned first ribs;

The outside side face of above-mentioned heel parts erect wall portion and with the part of above-mentioned foot bottom boundary sidelong to the distribution passage that forms;

Be arranged on the part of distinguishing above-mentioned distribution passage and above-mentioned foot bottom, and have the feed path wall of a plurality of feed paths; And

Be formed at above-mentioned foot bottom, and the air duct that is connected with above-mentioned feed path wall.