KR200431310Y1 - A air feed mechanism of shoes - Google Patents

Abstract

  The present invention injects a large amount of air into the shoe while walking, and at the same time the air is supplied to the shoe so that the contaminated air can be prevented from being recycled by only flowing in one direction so that the air does not flow back. Relates to a device.

 The present invention for achieving the above object is provided with a seat hole is formed so that the lower opening is open and the inlet hole communicating with the seat hole is formed on the side, a through hole through which the outside air is supplied is provided with an air chamber therein And a main body fixed to the seating hole of the shoe heel, an air supply unit provided in the air chamber of the main body to forcibly move the air, and an air moving unit communicating with the air supply unit to supply air into the shoe. It features.

 Shoes, Heels, Air, Feeder

Description

A air feed mechanism of shoes

 1 is a perspective view showing the air supply of the shoe according to the present invention.

2 is a cross-sectional view taken along line AA ′ of FIG. 1.

Figure 3 is a plan sectional view showing the air supply of the shoe according to the present invention.

Figure 4 is a front sectional view showing a state in which the air is supplied to the operating member of the present invention.

Figure 5 is a plan sectional view showing a state in which the air is supplied by the operation member of the present invention.

Figure 6 is a front sectional view showing a state in which the operating member of the present invention is lowered air supply.

Figure 7 is a plan sectional view showing a state in which air is supplied by the operation member of the present invention descends ..

8 is a cross-sectional view showing another embodiment of the present invention.

[Description of Symbols for Main Parts of Drawing]

10: shoe heel 20: body

40: fixed member 50: operating member

60, 70: 1st, 2nd supply pipe 80: air dust collecting chamber

S: elastic member

 The present invention relates to a shoe air supply device, and more particularly, contaminated air by flowing a large amount of air into the shoe while walking and only flowing in one direction so that the injected air does not flow back. To an air supply of a shoe so that it can be prevented from being recycled.

In general, as shoes such as sneakers, shoes, work shoes, etc. are manufactured using materials such as synthetic resin, synthetic fiber, leather, etc., there is a problem that air ventilation and circulation in the shoes are not good.

In this way, if the air is not well ventilated and circulated in the shoes, if the shoes are worn for a long time, such as bad smell caused by moisture in the shoes due to the sweat generated from the feet, it is not good for hygiene. In severe cases, there was a problem that the condition that can cause athlete's foot in the shoe is formed to provide a cause that can cause various diseases.

Accordingly, in the related art, many methods for forcibly venting and circulating air in a shoe have been proposed.

That is, there are devices and structures for forcibly circulating air in a shoe using a shoe insole.

These devices and structures, due to the nature of the shoe insole, friction occurs with the soles of the shoe during prolonged and repeated movements of putting on and taking off the shoes. When shoes are worn in a state in which a device for circulating the shoes is worn, the shoes are protruded to the upper part of the insole by the volume of the device, and there are problems such as discomfort when worn and easily broken.

On the other hand, there are devices and structures formed in the heel or sole window of the shoe to force and circulate air into the shoe.

These devices and structures are supplied with air in such a way that air is supplied to the inside of the shoe as the air supply is compressed by the weight when a person walks. At this time, when the foot falls off the ground, the air supply device that was compressed by the load is released and the outside air is filled, and air is injected into the shoe by this repetitive operation.

However, when a person walks, the air is supplied into the shoe only when the shoe touches the ground, and when the shoe falls off the ground, the air is not supplied.

Therefore, the amount of air supplied into the shoe is reduced so that the original purpose of supplying air into the shoe, that is, to inject air into the shoe to keep the feet clean to prevent various diseases, etc. There was a problem with this.

In addition, when the shoe falls from the ground, the air supplied into the shoe circulates inside the shoe by the suction force of the air supply device, so that the contaminated air flows back through the supply line, and the contaminated air flows back to the shoe. When braided in the air supply is supplied to the inside of the shoe by the compression of the shoe has a problem that provides a cause that can cause a variety of diseases, such as deepening the contamination inside the shoe.

Therefore, the present invention devised to solve the conventional problems as described above is when the air is injected into the shoe by the weight of the person when the shoe braided on the ground at the same time the air is injected into the shoe even when the shoe falls off the ground It is possible to supply a large amount of air into the shoe, to prevent the backflow of the air supplied into the shoe, and to flow in only one direction so that the air supplied to the inside of the shoe is prevented from flowing back. The purpose is.

 The present invention for achieving the above object is a seating hole is formed so that the top is open, the through hole is formed in the lower end of the seating hole, the shoe heel and the outside air formed in the inlet hole communicating with the seating hole on the side, The inlet hole is formed and the air chamber is provided therein, which is fixed to the seating hole of the shoe heel, and is inserted into the through hole of the shoe heel, and a part of which protrudes downward, and is provided in the air chamber of the main body. It is characterized by consisting of an air supply unit forcibly moving, and an air moving unit in communication with the air supply unit for supplying air into the shoe.

In addition, a seating hole is formed so that the upper part is opened, a shoe heel formed in the side of the inlet hole communicating with the seating hole, an inlet hole for supplying the outside air is formed and the air chamber is provided inside the seating hole of the shoe heel It is characterized in that it is made of a main body to be fixed, the air supply unit provided in the air chamber of the main body forcibly moving the air, and the air moving means in communication with the air supply unit for supplying air into the shoe.

Here, the air supply unit is fixed to a predetermined position of the internal air chamber of the main body, the operating member is fastened to the lower portion of the fixing member to operate up and down, between the fixing member and the operating member It characterized in that the elastic member is supported elastically.

The fixing member is provided with a top plate and a bottom plate, and a connecting shaft connecting the top plate and the bottom plate to each other, and the lower end of the top plate has an air chamber formed therein and a through hole formed on one side thereof. A sieve is provided, and an air flow port is provided in the connection shaft.

In addition, the air flow port is formed in the connecting shaft in the longitudinal direction, one side is opened to the outer surface of the upper plate, the other side is formed in the connecting shaft and the first air flow opening to the top of the lower plate Opening to the lower end of the lower plate, the upper portion is characterized in that made of a second air flow port communicating with the interior of the cylindrical body.

On the other hand, the air flow port is formed in the connecting shaft in the longitudinal direction, one side is opened to the outer surface of the lower plate, the other side is formed in the connection shaft and the first air flow opening to the lower side of the upper plate Opening to the lower end of the upper plate, the lower portion is characterized by consisting of a second air flow port communicating with the interior of the cylindrical body.

And, the operating member is provided in the cylindrical body of the fixing member, a fastening hole is formed in the upper, characterized in that the air chamber is formed therein.

On the other hand, the air moving means is installed so that one side is in communication with the first air flow opening that is opened in the upper plate of the fixing member, the other side is provided with a first supply pipe in communication with the air dust collecting chamber, the one side is the fixing member It is installed in communication with the through-hole formed in the cylindrical body, the other side is characterized in that made of a second supply pipe provided in communication with the air dust chamber.

In addition, the air movement means is installed so that one side is in communication with the first air flow opening is opened in the lower plate of the fixing member, the other side is provided with a first supply pipe in communication with the air dust chamber, and one side of the fixing member It is installed in communication with the through-hole formed in the cylindrical body, the other side is characterized by consisting of a second supply pipe provided in communication with the air dust chamber.

Here, each of the check valve is further provided on the inside of the first supply pipe and the second supply pipe.

Furthermore, each suction pipe is further provided at a predetermined position of the first supply pipe and the second supply pipe.

In addition, a check valve is further provided on the inside of the suction pipe.

In addition, an air dust collecting chamber communicating with the air moving unit is further provided inside the air chamber of the main body.

Here, the air dust collecting chamber is provided on the inner side wall of the air chamber front side of the main body.

Furthermore, the air dust collecting chamber is characterized in that the discharge hole for supplying air to the inside of the shoe is further provided.

On the other hand, it is characterized in that the dust filter is further provided in the inlet hole of the main body.

And, it characterized in that the auxiliary heel is further provided on the lower end of the operating member.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the shoe air supply apparatus according to the present invention will be described in detail.

1 is a perspective view showing the air supply of the shoe according to the present invention, Figure 2 is a cross-sectional view taken along line A-A 'of Figure 1, Figure 3 is a plan view showing the air supply of the shoe according to the present invention.

As shown in Figures 1 to 3, the subject innovation is a seating hole 12 is formed so that the top is opened, a through hole 13 is formed through the lower end of the seating hole 12, the seating hole 12 ) Is provided with a shoe heel 10 in communication with the inlet hole 14 formed on the side.

In addition, an inlet hole 22 through which external air is supplied is formed, and an air chamber 26 is provided therein, and a through hole 24 is formed at a lower end thereof, so that the inlet hole 12 of the shoe heel 10 is formed. The main body 20 is provided, which is secured to be seated and fixed to be inserted into the through hole 13 of the shoe heel 10 so that a part thereof protrudes downward.

Here, the inlet hole 14 formed in the shoe heel 10 is preferably further provided with a dust filter 16 that can purify the dust and the like when the outside air is introduced.

Furthermore, it is preferable that the dust filter 16 is separated so that the dust filter 16 can be separated and cleaned from time to time.

In addition, the air chamber 26 of the main body 20 is provided at a predetermined position is provided with an air supply for forcibly sucking and moving the air by the pump method.

On the other hand, the air supply is provided with a fixing member 40 which is fixed in association with the through-hole 24 of the main body 20, is fastened to the lower portion of the fixing member 40 to operate up and down, but the shoe heel An operating member 50 is inserted into the through hole 13 of 10 and protrudes downward, and an elastic member S is elastically supported between the fixed member 40 and the operating member 50. .

Here, the fixing member 40 is provided with a top plate 41 and the lower plate 42 to be spaced apart from each other, the connecting shaft 43 for connecting the upper plate 41 and the lower plate 42 to each other is formed, The lower end of the upper plate 41 has an air chamber 45 formed therein, a through hole 46 formed at one side thereof, and a lower end thereof connected to the through hole 24 of the main body 20. A cylindrical body 44 to be fixed is provided, and an air flow port 47 is provided inside the connecting shaft 43.

In addition, the air flow port 47 is formed in the connecting shaft in the longitudinal direction, one side of which is opened to the outer surface of the upper plate 41, the other side of the first air flow opening to the upper portion of the lower plate 42 A second air flow port 47b is formed in the connecting shaft 43 and is opened to the lower end of the lower plate 42, and the upper portion is in communication with the inside of the cylindrical body 44. Is formed.

In addition, the operating member 50 has an air chamber 52 formed therein, and a through hole 54 communicating with the air chamber 52 formed thereon, so that the cylindrical body 44 of the fixing member 40 is formed. It is provided to be fitted inside, the lower plate 42 of the fixing member 40 is located in the air chamber 52 and the connecting shaft 43 is inserted into the through hole 54 to be operated up and down. do.

Here, the lower end of the operation member 50 is further provided with an auxiliary heel 56 to prevent wear and breakage of the operation member 50 by friction with the ground when walking after wearing the shoe. It is desirable to facilitate the exchange if necessary.

In addition, the elastic member (S) is provided inside the cylindrical body 44 of the fixing member 40, the upper portion of the elastic member (S) to be in contact with the lower end of the upper plate 41 of the fixing member 40 And, the lower end is preferably in contact with the upper surface of the operating member (50).

On the other hand, it is provided to communicate with the air supply is provided with air moving means for supplying air into the shoe.

In this case, the air movement means is provided with a first supply pipe 60 provided so that one side is connected to the first air flow port 47a formed to be opened in the upper plate 41 of the fixing member 40.

Then, the second supply pipe 70 is provided so that one side is in communication with the through hole 46 formed in the cylindrical body 44 of the fixing member 40.

Here, the other ends of the first and second supply pipes 60 and 70, that is, the other end of the first and second supply pipes 60 and 70 connected to the fixing member 40, are connected to the inside of the shoe. The air may be directly supplied through the first and second supply pipes 60 and 70.

Preferably, the air chamber 26 further includes an air dust collecting chamber 80 having a discharge pipe 82 formed on the front sidewall of the air chamber 26, and the other end of the first and second supply pipes 60 and 70. It is installed to be connected to the interior of the air dust collecting chamber 80 to supply the air supplied through the first, second supply pipes 60, 70 into the air dust collecting chamber 80 to collect, the air dust collecting chamber ( It is preferable to supply the air supplied to 80 into the shoe through the discharge pipe 82.

In addition, it is preferable to include check valves 62 and 72 inside the first and second supply pipes 60 and 70 in which air passages are opened only in one direction so that air flows in one direction of the inside of the shoe.

Here, the check valve 62, 72 is preferably formed in a position in which one side of the first, second supply pipes 60, 70 is close to the side installed in the fixing member (40).

In addition, the suction pipes 64 and 74 for sucking air in the air chamber 26 of the main body 20 are further provided at predetermined positions of the first and second supply pipes 60 and 70.

Here, the inlet side of the suction pipes 64 and 74 is opened at the time of suction of air and pumps the sucked air to the suction pipes 64 and 74 when supplying to the first and second supply pipes 60 and 70. It is preferable to have check valves 66 and 76 open only in one direction so as to prevent discharge.

Referring to the operation of the present invention configured as described above are as follows.

First, the outside air passes through the dust filter 16 through the inlet holes 14 and 22 of the shoe heel 10 and the main body 20 while the foreign matter such as dust is filtered out of the main body 20. The chamber 26 is filled with air in the air chamber 45 of the fixing member 40 and the air chamber 52 of the operating member 50, respectively.

In this state, when the heel of the shoe touches the ground when the user walks by wearing the shoe as shown in FIG. 4, the operating member 50 moves to the upper portion of the cylindrical body 44 of the fixing member 40 by the weight of the person. While pressing the elastic member (S) is to rise to the top of the fixing member (40).

In this case, when the operating member 50 is moved upward, the air filled in the air chamber 52 of the operating member 50 is compressed by the pressure that the operating member 50 moves upward. The air supplied to the air chamber 45 of the fixing member 40 through the air flow port 47b, the air supplied to the air chamber 45 of the fixing member 40 is connected to the through hole 46 5 is supplied to the air dust collecting chamber 80 through the second supply pipe 70, and the air supplied to the air dust collecting chamber 80 is supplied to the inside of the shoe through the discharge pipe 82 again. .

Here, when the air is moved through the second supply pipe 70, the check valve 72 of the second supply pipe 70 is opened so that the air is smoothly supplied to the air dust collecting chamber 80, the suction pipe 74 The check valve 76 is closed to prevent the air moving to the air dust collecting chamber 80 is discharged to the suction pipe 74 to be lost.

Meanwhile, when air is supplied through the second supply pipe 70, the check valve 62 of the first supply pipe 60 is closed, and the check valve 66 formed at the suction pipe 64 is opened to open the air. The air in the dust collecting chamber 80 is prevented from flowing back through the first supply pipe 60, and the air in the air chamber 26 of the main body 20 is sucked into the suction pipe 64 to fix the fixed member ( The upper air chamber 52 of the operating member 50, ie, the lower plate 42 of the fixing member 40, through the first air flow port 47a of the air chamber 40 of the operating member 50. 52 is supplied to the separated upper air chamber 52.

When the shoe touches the ground, air is supplied to the inside of the shoe. On the contrary, when the shoe falls off the ground, the operating member 50 is pushed downward by the return force of the elastic member S as shown in FIG. 6. The operating member 50 is lowered to the bottom.

 At this time, the air filled in the upper air chamber 45 of the fixing member 40 when the operating member 50 is moved to the lower side by the pressure that the operating member 50 is compressed while moving to the lower 1 is moved through the air flow port 47a, the air moved through the first air flow port 47a is supplied to the air dust collecting chamber 80 through the first supply pipe 60 as shown in FIG. The air supplied to the air dust collecting chamber 80 is again supplied to the inside of the shoe through the discharge pipe 82.

 Here, when the air is moved through the first supply pipe 60, the check valve 62 of the first supply pipe 60 is opened so that the air is smoothly supplied to the air dust collecting chamber 80, the suction pipe 64 The check valve 66 is closed to prevent the air moving to the air dust collecting chamber 80 is discharged to the suction pipe (64).

Meanwhile, when air is supplied through the first supply pipe 60, the check valve 72 of the second supply pipe 70 is closed and the check valve 76 formed at the suction pipe 74 is opened to open the air collector. The air of truth 80 is prevented from flowing back through the second supply pipe 70, and the air in the air chamber 26 of the main body 20 is sucked into the suction pipe 74 to fix the fixing member 40. The air supplied to the air chamber 45 and the air supplied to the air chamber 45 is again the air chamber 52 of the operating member 50, that is, the fixing member 40 through the second air flow port 47b. The lower plate 42 is supplied to the air chamber 52 formed in the air chamber 52 of the operating member 50.

In this way, when the user walks in the state of wearing shoes, when the shoe touches the ground by the up and down operation of the operating member, the operating member rises and air is supplied to the inside of the shoe, and when the shoe falls from the ground, the operating member descends. As air is supplied to the inside of the shoe, a large amount of air is continuously supplied into the shoe.

In addition, when the check valves 62 and 72 provided in the first and second supply pipes 60 and 70 are installed to be opened and closed in reverse, the air supplied into the shoes may be forced out to the outside of the shoes.

8 is a cross-sectional view showing another embodiment of the present invention.

As shown in Figure 8, the subject innovation is provided with a seat hole 12 is formed so that the top is open, the shoe heel 10 formed in the side of the inlet hole 14 in communication with the seat hole 12 .

In addition, the inlet hole 22 to which the outside air is supplied is formed, and the air chamber 26 is provided therein, and the main body 20 is fixed to the seating hole 12 of the shoe heel 10.

In addition, an air supply unit provided in the air chamber 26 of the main body 20 to forcibly move air is provided.

In addition, an air moving unit communicating with the air supply unit and supplying air into the shoe is provided.

On the other hand, the air supply is provided with a fixing member 40 which is fixed in association with the through-hole 24 of the main body 20, the operating member is fastened to the upper portion of the fixing member 40 to operate up and down ( 50 is provided, and the elastic member S is elastically supported between the fixing member 40 and the operation member 50 is provided.

 Here, the fixing member 40 is provided with the upper plate 41a and the lower plate 42a to be spaced apart from each other so that the lower plate 42a is seated on the bottom surface of the seat hole 12 of the shoe heel 10, A connecting shaft 43 is formed to connect the upper plate 41a and the lower plate 42a to each other. An upper portion of the lower plate 42a has an air chamber 45 formed therein, and a through hole at one side thereof. 46 is formed, the upper portion is provided with a cylindrical body 44 is fixed in association with the through-hole 24 of the main body 20, the air inlet 47 is provided in the connecting shaft 43.

Further, the air inlet 47 is formed in the longitudinal direction inside the connecting shaft 43, one side is opened to the outer surface of the lower plate 42a, the other side is opened to the lower portion of the upper plate 41a The first flow port 47a is formed, and is formed in the connecting shaft 43 and is opened to the upper end of the upper plate 41a, and the lower part is a second air flow port communicating with the inside of the cylindrical body 44. 947b).

In addition, the operation member 50 has an air chamber 52 formed therein, and a through hole 54 communicating with the air chamber 52 formed at a lower portion thereof, and thus the cylindrical member 44 of the fixing member 40 is formed. The upper plate 41a of the fixing member 40 is positioned in the air chamber 52 and the connecting shaft 43 is inserted into the through hole 54 to be operated up and down. It is provided to protrude upward than the upper surface of the shoe heel 10.

Here, it is preferable to further include a cover body 56a having good elasticity on the upper portion of the operating member 50 to prevent exhaustion of the sole of the wearer when walking after wearing the shoe so as to have a good fit.

The present invention configured as described above can prevent the breakage of each part due to external impact, etc., since the protrusion of the operating member is installed on the upper side, and thus the operating member is not exposed to the outside. It works by the same method.

However, when the fixing member 40 and the operating member 50 of the air supply unit are installed oppositely, that is, the operating member 50 installed in the fixing member 40 of the air supply unit is installed to protrude upward, and wears shoes. The operation member 50 is operated by the heel of the wearer to have the same effect of supplying air into the shoe. Here, the description of the process of supplying air into the shoe by operating the operation member 50 will be described. It will be omitted.

 In the above description of the preferred embodiment of the shoe air supply apparatus according to the present invention, the present invention is not limited to this, but the utility model registration claims and the detailed description of the invention and the scope of the accompanying drawings in various ways It is possible to carry out by modification, and this also belongs to this invention.

 The present invention configured as described above, when the shoe touches the ground, the operating member is raised while the air is supplied to the inside of the shoe through the second supply pipe, and when the shoe falls from the ground, the operating member is lowered and the inside of the shoe through the first supply pipe. By supplying air into the shoe, a large amount of air can be supplied into the shoe, thereby keeping the feet clean and providing various effects such as preventing various diseases.

In addition, by installing a check valve in the supply pipe to prevent the air supplied back into the shoe has an effect to prevent the contaminated air is backflowed and recycled.

Claims (17)

A seat hole is formed so that an upper part is opened, a through hole is formed at a lower end of the seat hole, and a shoe heel formed at a side of an inlet hole communicating with the seat hole; An inlet hole through which external air is supplied, and an air chamber is provided therein, which is fixed to a seating hole of a shoe heel, and is inserted into a through hole of the shoe heel and a part of which protrudes downward; An air supply unit provided in the air chamber of the main body to forcibly move air; The air supply unit of the shoe, characterized in that made in communication with the air supply means for moving the air to supply air into the shoe.  A seat hole is formed so that the upper part is opened, and the shoe heel formed in the side of the inlet hole communicating with the seat hole, A main body formed with an inlet hole for supplying external air and an air chamber provided therein to be seated and fixed to a seating hole of a shoe heel; An air supply unit provided in the air chamber of the main body to forcibly move air; The air supply unit of the shoe, characterized in that made in communication with the air supply means for moving the air to supply air into the shoe.  The method according to claim 1 or 2, The air supply unit is fixed to a predetermined position of the internal air chamber of the main body, An operating member which is fastened to a lower portion of the fixing member and operates up and down; Shoe air supply device characterized in that the elastic member is provided between the fixing member and the operating member elastically supported.  The method of claim 3, wherein The fixing member is provided with an upper plate and a lower plate, provided with a connecting shaft connecting the upper plate and the lower plate to each other, the lower end of the upper plate is provided with an air chamber therein and a cylindrical body formed with a through hole on one side And, the air supply device of the shoe characterized in that the air flow port is provided inside the connecting shaft.  The method of claim 4, wherein The air flow port is formed in the longitudinal direction inside the connecting shaft, one side is opened to the outer surface of the upper plate, the other side is the first air flow opening to the upper portion of the lower plate, The air supply apparatus of the shoe formed in the connecting shaft is opened to the lower end of the lower plate, the upper portion is made of a second air flow port communicating with the inside of the cylindrical body. The method of claim 4, wherein The air flow port is formed in the longitudinal direction inside the connecting shaft, one side is opened to the outer surface of the lower plate, the other side is the first air flow opening to the lower portion of the upper plate, The air supply device of the shoe formed in the connecting shaft is opened to the lower end of the upper plate, the lower portion is made of a second air flow port communicating with the inside of the cylindrical body.  The method of claim 3, wherein The operating member is provided in the cylindrical body of the fixing member, a fastening hole is formed on one side, the air supply apparatus of the shoe, characterized in that the air chamber is formed therein.  The method of claim 1, The air movement means is provided in one side is in communication with the first air flow port opened in the upper plate of the fixing member, the other side is provided with a first supply pipe in communication with the air dust chamber; The one side is installed in communication with the through-hole formed in the cylindrical body of the fixing member, the other side of the shoe air supply device characterized in that made of a second supply pipe provided in communication with the air dust chamber. The method of claim 2, The air moving means is provided in one side is in communication with the first air flow port opened in the lower plate of the fixing member, the other side is provided with a first supply pipe in communication with the air dust chamber; The one side is installed in communication with the through-hole formed in the cylindrical body of the fixing member, the other side of the shoe air supply device characterized in that made of a second supply pipe provided in communication with the air dust chamber.  The method according to claim 8 or 9, Shoe air supply device, characterized in that each check valve is further provided inside the first supply pipe and the second supply pipe.  The method of claim 10, Shoe air supply device, characterized in that each suction pipe is further provided at a predetermined position of the first supply pipe and the second supply pipe.  The method of claim 11, Shoe air supply device characterized in that the check valve is further provided on the inside of the suction pipe.   The method according to claim 8 or 9, Air supply device for the shoe, characterized in that the air collecting chamber further communicates with the air moving means inside the air chamber of the main body.   The method of claim 13, The air dust collecting chamber is a shoe air supply apparatus, characterized in that provided in the inner side wall of the air chamber front of the main body.   The method of claim 13, The air collecting device of the shoe, characterized in that the air dust collecting chamber is further provided with a discharge hole for supplying air into the interior of the shoe.  The method according to claim 1 or 2, Shoe air supply device, characterized in that the dust filter is further provided in the inlet of the main body.  The method of claim 7, wherein Shoe air supply device characterized in that the auxiliary heel is further provided on the lower end of the operating member.

Images