CN110811063A

CN110811063A - Automatic lacing mechanism

Info

Publication number: CN110811063A
Application number: CN201910904931.7A
Authority: CN
Inventors: 刘丽丽; 徐豹; 周兴军; 戴青松
Original assignee: Xuzhou University of Technology
Current assignee: Xuzhou University of Technology
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-02-21

Abstract

An automatic lacing mechanism, an air compressing unit comprises a bottom plate, a pedal, a spring A, an elastic air bag, at least one air inlet one-way valve and at least two air outlet one-way valves; the inflation control unit comprises two inflation control valves and a rotating mechanism; the inflation control valve comprises a valve body A, a valve core A, an air inlet channel A and an air outlet channel A, and the air inlet channel A and the air outlet channel A are controlled by the valve core A to be communicated or closed; the two air inlet channels A are respectively connected with the air outlet ends of the two air outlet one-way valves, and the two air outlet channels A are respectively connected with the two air inlets of the air bag type shoelace; the air leakage unit comprises a valve body B, a valve core B, an air inlet channel B and an air outlet channel B, and the air inlet channel B and the air outlet channel B are controlled to be communicated or closed by the valve core B; the outer ends of the air inlet channel B and the air outlet channel B are connected in series on the middle section of one of the communicating pipelines B. The mechanism can realize relatively automatic lacing operation, and enables a user not to bend down or squat down to carry out manual lacing operation.

Description

Automatic lacing mechanism

Technical Field

The invention belongs to the technical field of intrinsic safety power supplies, and particularly relates to an automatic lacing mechanism.

Background

The shoelace is a very troublesome thing for many people, like the old and the pregnant women can not bend down or squat down the shoelace manually, in addition, children also have the problem that can not tie and carry. In the walking process, the shoelace is easy to loosen and even fall off, which can affect the normal use of the wearer and even cause the accidental injury of the body. Therefore, there is a great need for an automatic lacing mechanism that facilitates normal use by users who cannot be manually laced or laced.

Disclosure of Invention

In view of the problems of the prior art, the invention provides an automatic lacing mechanism, which can realize relatively automatic lacing operation, enable a user not to bend down or squat down to perform manual lacing operation, and solve the problem that the user cannot complete lacing by himself or herself.

In order to achieve the purpose, the invention provides an automatic lacing mechanism, which comprises an air bag type shoelace, and further comprises an air compressing unit, an inflation control unit and an air releasing unit;

the air compression unit is arranged at the rear side in the shoe body and comprises a bottom plate, a pedal, a spring A, an elastic air bag, at least one air inlet one-way valve and at least two air outlet one-way valves; the bottom plate is embedded in the upper part of the sole; the pedal is arranged above the bottom plate, the spring A is arranged between the pedal and the bottom plate, and the upper end and the lower end of the spring A are respectively abutted against the pedal and the bottom plate; the elastic air bag is sleeved outside the spring A, the upper end and the lower end of the elastic air bag are respectively connected with the pedal and the bottom plate in a sealing mode to form a sealed air cavity, a communication cavity which is sunken downwards is arranged in the central area of the upper portion of the bottom plate, an air inlet hole and an air outlet hole which are communicated between the outside of the bottom plate and the communication cavity are formed in the bottom plate, the number of the air inlet holes is consistent with that of the air inlet one-way valves, the number of the air outlet holes is consistent with that of the air outlet one-way valves, the air inlet one-way valves and the air outlet one-way valves are respectively assembled in the air inlet holes and the air outlet holes, and the positions corresponding;

the inflation control unit is arranged in the middle of the inner cavity of the sole and comprises two inflation control valves which are arranged oppositely and a rotating mechanism arranged between the two inflation control valves; the inflation control valve comprises a valve body A and a valve core A, wherein a valve cavity A is formed in the valve body A, the valve cavity A is of a two-stage stepped cavity structure, a large-diameter section A is located on the outer side, a small-diameter section A is located on the inner side, the outer end of the large-diameter section A extends to the end face of the valve body A, and the inner end of the small-diameter section A extends into the valve body A; the valve body A is provided with an air inlet channel A and an air outlet channel A which are communicated with the opposite two sides of the inner end of the valve cavity A at the opposite two ends vertical to the valve cavity A; the outer diameter of the valve core A is matched with the inner diameter of the small-diameter section A of the valve cavity A, the valve core A is inserted into the valve cavity A in a sliding mode and is in sliding sealing fit with the small-diameter section A, and the outer end of the valve core A extends to the outer portion of the valve body A and is provided with a connecting hole A; the valve core A is fixedly connected with a limiting ring A in sliding fit with the large-diameter section A at a part corresponding to the large-diameter section A, the valve body A is provided with a limiting ring B at the outer end of the valve cavity A, a spring B is sleeved outside the valve core A, and two ends of the spring B are respectively abutted against the limiting ring A and the limiting ring B; when the valve core A is positioned at the maximum pull-out position, the inner end of the valve core A is positioned inside the small-diameter section A; the rotating mechanism comprises a rotating disc, a connecting rod A, a connecting rod B and a pull wire, the rotating disc is rotatably arranged in the middle of the inner cavity of the sole through a rotating shaft in the center of the rotating disc, the inner ends of the connecting rod A and the connecting rod B are respectively hinged with the two opposite ends of the rotating disc, and the outer ends of the connecting rod A and the connecting rod B are respectively hinged with a connecting hole A on the outer end of a valve core A in the two inflation control valves; one end of the pull wire is connected with the outer edge of the rotary disc, and the other end of the pull wire penetrates through the sole to reach the outer part of the shoe body and is connected with a handle A;

the air inlet channels A of the two inflation control valves are respectively connected with the air outlet ends of the two air outlet one-way valves through two communication pipelines A, the two communication pipelines A are positioned in the inner cavity of the sole, the air outlet channels A of the two inflation control valves are respectively connected with two air inlets of the air bag type shoelace through two communication pipelines B, the two communication pipelines B are respectively arranged in the cavities of two opposite shoe body side edges in a penetrating way, the air bag type shoelace is a collapsible strip-shaped air bag, the volume is expanded after inflation and the total length is reduced, and the volume is reduced and the total length is extended after deflation;

the air leakage unit comprises a valve body B and a valve core B, a valve cavity B is formed in the valve body B, the valve cavity B is of a two-stage stepped cavity structure, a large-diameter section B is located on the outer side, a small-diameter section B is located on the inner side, the outer end of the large-diameter section B extends to the end face of the valve body B, and the inner end of the small-diameter section B extends into the valve body B; the valve body B is provided with an air inlet channel B and an air outlet channel B which are communicated with the inner end of the valve cavity B at two opposite ends which are vertical to the valve cavity B, the outer diameter of the valve core B is matched with the small-diameter section B, the valve core B is inserted into the valve cavity B in a sliding way and is matched with the small-diameter section B in a sliding and sealing way, and the outer end of the valve core B extends to the outside of the valve body B and is connected with a handle B; the valve core B is fixedly connected with a limiting ring C in sliding fit with the large-diameter section B at a part corresponding to the large-diameter section B, the valve body B is provided with a limiting ring D at the outer end of the valve cavity B, a spring C is sleeved outside the valve core B, and two ends of the spring C are respectively abutted against the limiting ring C and the limiting ring D; when the valve core B is positioned at the maximum pull-out position, the inner end of the valve core B is separated from the small-diameter section B and enters the inside of the large-diameter section B; the air leakage unit is arranged on one side of the sole, one end of the air leakage unit, which is provided with a handle B, is positioned on the outer side of the shoe body, and the outer ends of the air inlet channel B and the air outlet channel B are connected in series on the middle section of one of the communicating pipelines B.

Preferably, the base plate and the pedal are both circular.

Further, for the convenient opening and closing of adjusting two inflation control valves, simultaneously, can finely control the aperture of opening the inflation control valve to in control gaseous throughput, still include the thread bush, the thread bush is established in handle A's outside, and fixes the side tip at the sole, handle A is the cylinder structure that has the external screw thread, and handle A passes through the screw-thread fit cartridge in the inside of thread bush, and handle A's outer end has the knob.

The invention can facilitate the wearer to supply air to the inflation control unit by utilizing the reciprocating action of the rear part of the foot by arranging the spring A and the elastic air bag in the air compressing unit. The rotating mechanism in the inflation control unit can control the opening and closing of the two inflation control valves, specifically, the handle A drives the rotation angle of the turntable to change through the stay wire, the turntable can respectively pull out the valve cores A of the two inflation control valves to the outside through the connecting rod A and the connecting rod B in the rotating process, so that a passage between the air inlet channel A and the air outlet channel A is opened, and the specific opening degree is controlled by the rotation angle of the turntable. After the inflation control valve is opened, gas can be injected into the air bag type shoelace through the air compression unit, and then the air bag type shoelace can be filled with gas, so that the air bag type shoelace is pressed against the shoe body through the expansion, the effect of tightening the shoelace is achieved, after the air bag type shoelace is filled with gas, the turntable can lose the holding of the external force through the mode of removing the external force of pulling the wire, the spring B in the inflation control valve can eject the valve core A into the valve cavity A, and the passage between the air inlet channel A and the air outlet channel A is cut off. When the air needs to be discharged, the handle B is pulled out manually, and the air in the air bag type shoelace can enter the large-diameter section of the valve cavity B through the air outlet channel B and then is discharged from a gap between the valve core B and the valve cavity B. This mechanism can realize comparatively automatic frenulum operation, enables the user and need not bow or squat and carry out manual frenulum operation, simultaneously, can also solve can not tie the problem that the user can't accomplish the frenulum by oneself.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the compressor unit of the present invention;

FIG. 3 is a schematic view of the assembly of the inflation control unit and the deflation unit of the present invention;

FIG. 4 is a schematic view showing the structure of the inflation control valve in the present invention;

FIG. 5 is a schematic view showing the structure of the air-escape unit according to the present invention;

fig. 6 is an assembly view of the present invention assembled in a shoe body.

In the figure: 1. an air bag type shoelace, 2, a pressure unit, 3, an inflation control unit, 4, an air release unit, 5, a bottom plate, 6, a pedal, 7, a spring A, 8, an air inlet one-way valve, 9, an air outlet one-way valve, 10, an elastic air bag, 11, a communication cavity, 12, an inflation control valve, 13, a rotating mechanism, 14, a valve body A, 15, a valve core A, 16, a valve cavity A, 17, an air inlet channel A, 18, an air outlet channel A, 19, a connecting hole A, 20, a limiting ring A, 21, a limiting ring B, 22, a rotating disc, 23, a connecting rod A,24, a connecting rod B,25, a stay wire, 26, a handle A,27, a communication pipeline A, 28, a communication pipeline B, 29, a valve body B,30, a valve core B, 31, a valve cavity B, 32, an air inlet channel B, 33, an air outlet channel B, 34, a rotating shaft, 35, a threaded sleeve, 36, a knob, 37, a spring B, 38, a, 40. limiting rings D and 41 and a handle B.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1 to 6, an automatic lacing mechanism comprises an air bag type shoelace 1, and further comprises an air compressing unit 2, an inflation control unit 3 and an air releasing unit 4;

the air compression unit 2 is arranged at the rear side in the shoe body, and the air compression unit 2 comprises a bottom plate 5, a pedal 6, a spring A7, an elastic air bag 10, at least one air inlet one-way valve 8 and at least two air outlet one-way valves 9; the bottom plate 5 is embedded at the upper part of the sole; the pedal 6 is arranged above the bottom plate 5 so as to have a moving space in the longitudinal direction and be convenient to contact with the heel part of a user, the spring A7 is arranged between the pedal 6 and the bottom plate 5, and the upper end and the lower end of the spring A7 are respectively abutted against the pedal 6 and the bottom plate 5; the elastic air bag 10 is sleeved outside the spring A7, the upper end and the lower end of the elastic air bag are respectively connected with the pedal 6 and the bottom plate 5 in a sealing mode to form a sealed air cavity, a communication cavity 11 which is sunken downwards is arranged in the central area of the upper portion of the bottom plate 5, the bottom plate 5 is provided with air inlet holes and air outlet holes which are communicated between the outside of the bottom plate 5 and the communication cavity 11, the number of the air inlet holes is consistent with that of the air inlet one-way valves 8, the number of the air outlet holes is consistent with that of the air outlet one-way valves 9, the air inlet one-way valves 8 and the air outlet one-way valves 9 are respectively assembled in the air inlet holes and the air outlet holes, and the positions corresponding to the air inlets; the air compressing unit 2 is mainly positioned at the lower part of the heel part and outputs air to the outside through reciprocating pressing of the heel part of a user;

the inflation control unit 3 is arranged in the middle of the inner cavity of the sole, and the inflation control unit 3 comprises two inflation control valves 12 which are arranged opposite to each other and a rotating mechanism 13 which is arranged between the two inflation control valves 12; the inflation control valve 12 comprises a valve body A14 and a valve core A15, a valve cavity A16 is arranged in the valve body A14, the valve cavity A16 is of a two-stage stepped cavity structure, a large-diameter section A is located on the outer side, a small-diameter section A is located on the inner side, the outer end of the large-diameter section A extends to the end face of the valve body A14, and the inner end of the small-diameter section A extends into the valve body A14; the valve body A14 is provided with an air inlet channel A17 and an air outlet channel A18 which are communicated with two opposite sides of the inner end of the valve cavity A16 at two opposite ends vertical to the valve cavity A16; the outer diameter of the valve core A15 is matched with the inner diameter of the small-diameter section A of the valve cavity A16, the valve core A15 is slidably inserted into the valve cavity A16 and is in sliding sealing fit with the small-diameter section A, and the outer end of the valve core A15 extends to the outside of the valve body A14 and is provided with a connecting hole A19; the valve core A15 is fixedly connected with a limit ring A20 which is in sliding fit with the large-diameter section A at the part corresponding to the large-diameter section A, the valve body A14 is provided with a limit ring B21 at the outer end of the valve cavity A16, and the limit ring B21 is matched with a limit ring A20 to limit the maximum pull-out distance of the valve core A15; a spring B37 is sleeved outside the valve core A15, and two ends of the spring B37 are respectively abutted against the limiting ring A20 and the limiting ring B21; when the valve core A15 is in the maximum pull-out position, the inner end of the valve core A15 is positioned in the small-diameter section A, so that good sealing can be ensured between the valve core A15 and the small-diameter section A, gas can only enter the gas outlet channel A through the gas inlet channel A, and when the inner end of the valve core A15 is abutted against the inner end of the valve cavity A16, a passage between the gas inlet channel A and the gas outlet channel A is disconnected; the rotating mechanism 13 comprises a rotating disc 22, a connecting rod A23, a connecting rod B24 and a pull wire 25, the rotating disc 22 is rotatably arranged in the middle of the inner cavity of the sole through a rotating shaft 34 in the center of the rotating disc 22, so that the rotating disc 22 is arranged in the hollow inner cavity of the sole, the comfortable bottom of a user can be prevented from being influenced by the arrangement of the rotating disc 22, the inner ends of the connecting rod A23 and the connecting rod B24 are respectively hinged with the two opposite ends of the rotating disc 22, and the outer ends of the connecting rod A23 and the connecting rod B24 are respectively hinged with a connecting hole A19 on the outer end of; one end of the stay wire 25 is connected with the outer edge of the turntable 22, and the other end penetrates through the sole to reach the outside of the shoe body and is connected with a handle A26;

the air inlet channels A17 of the two inflation control valves 12 are respectively connected with the air outlet ends of the two air outlet one-way valves 9 through two communication pipelines A27, the two communication pipelines A27 are positioned in the inner cavity of the sole, the air outlet channels A18 of the two inflation control valves 12 are respectively connected with two air inlets of the air bag type shoelace 1 through two communication pipelines B28, the two communication pipelines B28 are respectively penetrated in the cavities of two opposite shoe body side walls, the air bag type shoelace 1 is a collapsible strip-shaped air bag, the volume is expanded and the total length is reduced after inflation, the volume is reduced and the total length is extended after deflation;

the air release unit 4 comprises a valve body B29 and a valve core B30, a valve cavity B31 is arranged in the valve body B29, the valve cavity B31 is of a two-stage stepped cavity structure, a large-diameter section B is positioned on the outer side, a small-diameter section B is positioned on the inner side, the outer end of the large-diameter section B extends to the end face of the valve body B29, and the inner end of the small-diameter section B extends into the valve body B29; the valve body B29 is provided with an air inlet channel B32 and an air outlet channel B33 which are communicated with the inner end of the valve cavity B31 at the opposite two ends which are vertical to the valve cavity B31, the outer diameter of the valve core B30 is matched with the small diameter section B, the valve core B30 is inserted in the valve cavity B31 in a sliding and sealing way and is matched with the small diameter section B in a sliding and sealing way, the outer end of the valve core B30 extends to the outside of the valve body B29 and is connected with a handle B41; the valve core B30 is fixedly connected with a limiting ring C39 which is in sliding fit with the large-diameter section B at the part corresponding to the large-diameter section B, the valve body B29 is provided with a limiting ring D40 at the outer end of the valve cavity B31, and the limiting ring D40 is matched with the limiting ring C39 to limit the maximum pull-out distance of the valve core B30; a spring C38 is sleeved outside the valve core B30, and two ends of the spring C38 are respectively abutted against the limiting ring C39 and the limiting ring D40; when the valve core B30 is in the maximum pull-out position, the inner end of the valve core B30 is separated from the small-diameter section B and enters the large-diameter section B, so that the air inlet channel B and the air outlet channel B can be communicated with the large-diameter section B of the valve cavity B, and then air in the air inlet channel B and the air outlet channel B can be discharged through a gap between the valve core B and the large-diameter section B and a gap between the valve core B and the limiting ring D, so that the air-bag type shoelace can be deflated; when the inner end of the valve core B30 is abutted against the inner end of the valve cavity B31, a passage between the air inlet channel B and the air outlet channel B is disconnected; the air leakage unit 4 is arranged at one side of the sole, one end with a handle B41 is positioned at the outer side of the shoe body, and the outer ends of the air inlet channel B32 and the air outlet channel B33 are connected in series at the middle section of one of the communicating pipelines B28.

Preferably, the bottom plate 5 and the pedal 6 are both circular. Preferably, the communication pipeline B is a collapsible strip-shaped air bag.

In order to conveniently adjust the opening and closing of the two inflation control valves and meanwhile finely control the opening degree of the opening of the inflation control valves so as to control the gas passing amount, the pneumatic shoe further comprises a threaded sleeve 35, the threaded sleeve 35 is sleeved outside the handle A26 and fixed at the side end of the shoe sole, the handle A26 is of a cylindrical structure with external threads, the handle A26 is inserted into the threaded sleeve 35 in a threaded fit mode, and the outer end of the handle A26 is provided with a knob 36.

When the mechanism is used, the mechanism is arranged in the shoe body, the air bag type shoelace penetrates into the shoe body, the air compression unit is arranged at the position close to the rear part in the shoe body, and meanwhile, the bottom plate is embedded in the upper part of the sole, so that the air inflation control unit is arranged in the hollow inner cavity of the sole. Make two communicating pipe way B upwards pass the upper of a shoe and be connected with two air inlets of gasbag formula shoelace by relative both sides, wherein, the portion that the inboard of upper of a shoe corresponds two communicating pipe way B can make up elasticity formula bar sack in inside, can set to elasticity formula barrel casing formula structure at the portion of penetrating that corresponds gasbag formula shoelace, so that communicating pipe way B can inwards rise the sack under being full of the gas state, gasbag formula shoelace can inwards rise the barrel casing under being full of the gas state, thereby can improve the effect of tightening up the shoes body. Through being provided with spring A and elasticity gasbag in making the unit of calming anger, can be convenient for the wearer utilize the reciprocal effect in the foot rear portion to supply out gas to the inflation control unit. The rotating mechanism in the inflation control unit can control the opening and closing of the two inflation control valves, specifically, the handle A drives the rotation angle of the turntable to change through the stay wire, the turntable can respectively pull out the valve cores A of the two inflation control valves to the outside through the connecting rod A and the connecting rod B in the rotating process, so that a passage between the air inlet channel A and the air outlet channel A is opened, and the specific opening degree is controlled by the rotation angle of the turntable. After the inflation control valve is opened, gas can be injected into the air bag type shoelace through the air compression unit, and then the air bag type shoelace can be filled with gas, so that the air bag type shoelace is pressed against the shoe body through the expansion, the effect of tightening the shoelace is achieved, after the air bag type shoelace is filled with gas, the turntable can lose the holding of the external force through the mode of removing the external force of pulling the wire, the spring B in the inflation control valve can eject the valve core A into the valve cavity A, and the passage between the air inlet channel A and the air outlet channel A is cut off. When the air needs to be discharged, the handle B is pulled out manually, and the air in the air bag type shoelace can enter the large-diameter section of the valve cavity B through the air outlet channel B and then is discharged from a gap between the valve core B and the valve cavity B. This mechanism can realize comparatively automatic frenulum operation, enables the user and need not bow or squat and carry out manual frenulum operation, simultaneously, can also solve can not tie the problem that the user can't accomplish the frenulum by oneself.

Claims

1. An automatic lacing mechanism comprises an air bag type shoelace (1), and is characterized by also comprising an air compressing unit (2), an air inflation control unit (3) and an air leakage unit (4);

the air compression unit (2) is arranged at the rear side in the shoe body, and the air compression unit (2) comprises a bottom plate (5), a pedal (6), a spring A (7), an elastic air bag (10), at least one air inlet one-way valve (8) and at least two air outlet one-way valves (9); the bottom plate (5) is embedded at the upper part of the sole; the pedal (6) is arranged above the bottom plate (5), the spring A (7) is arranged between the pedal (6) and the bottom plate (5), and the upper end and the lower end of the spring A are respectively abutted against the pedal (6) and the bottom plate (5); the elastic air bag (10) is sleeved outside the spring A (7), the upper end and the lower end of the elastic air bag are respectively connected with the pedal (6) and the bottom plate (5) in a sealing mode to form a sealed air cavity, a downward-sunken communicating cavity (11) is formed in the central area of the upper portion of the bottom plate (5), air inlet holes and air outlet holes are formed in the bottom plate (5) and are communicated between the outside of the bottom plate (5) and the communicating cavity (11), the number of the air inlet holes is consistent with that of the air inlet one-way valves (8), the number of the air outlet holes is consistent with that of the air outlet one-way valves (9), the air inlet one-way valves (8) and the air outlet one-way valves (9) are respectively assembled in the air inlet holes and the air outlet holes, and the positions corresponding to air inlets of the air inlet one;

the inflation control unit (3) is arranged in the middle of the inner cavity of the sole, and the inflation control unit (3) comprises two inflation control valves (12) which are arranged opposite to each other and a rotating mechanism (13) arranged between the two inflation control valves (12); the inflation control valve (12) comprises a valve body A (14) and a valve core A (15), a valve cavity A (16) is arranged in the valve body A (14), the valve cavity A (16) is of a two-stage stepped cavity structure, a large-diameter section A is located on the outer side, a small-diameter section A is located on the inner side, the outer end of the large-diameter section A extends to the end face of the valve body A (14), and the inner end of the small-diameter section A extends into the valve body A (14); the valve body A (14) is provided with an air inlet channel A (17) and an air outlet channel A (18) which are communicated with the two opposite sides of the inner end of the valve cavity A (16) at the two opposite ends vertical to the valve cavity A (16); the outer diameter of the valve core A (15) is matched with the inner diameter of a small-diameter section A of the valve cavity A (16), the valve core A (15) is inserted into the valve cavity A (16) in a sliding mode and is matched with the small-diameter section A in a sliding and sealing mode, the outer end of the valve core A (15) extends to the outside of the valve body A (14) and is provided with a connecting hole A (19); the valve core A (15) is fixedly connected with a limiting ring A (20) in sliding fit with the large-diameter section A at a part corresponding to the large-diameter section A, a limiting ring B (21) is arranged at the outer end of the valve cavity A (16) of the valve body A (14), a spring B (37) is sleeved outside the valve core A (15), and two ends of the spring B (37) are respectively abutted against the limiting ring A (20) and the limiting ring B (21); when the valve core A (15) is at the maximum pulling-out position, the inner end of the valve core A (15) is positioned inside the small-diameter section A; the rotating mechanism (13) comprises a rotating disc (22), a connecting rod A (23), a connecting rod B (24) and a pull wire (25), the rotating disc (22) is rotatably arranged in the middle of the inner cavity of the sole through a rotating shaft (34) in the center of the rotating disc (22), the inner ends of the connecting rod A (23) and the connecting rod B (24) are respectively hinged with two opposite ends of the rotating disc (22), and the outer ends of the connecting rod A (23) and the connecting rod B (24) are respectively hinged with connecting holes A (19) in the outer ends of valve cores A (15) in the two inflation control valves (12); one end of the pull wire (25) is connected with the outer edge of the rotary disc (22), and the other end penetrates through the sole to reach the outside of the shoe body and is connected with a handle A (26);

the air inlet channels A (17) of the two air inflation control valves (12) are respectively connected with the air outlet ends of the two air outlet one-way valves (9) through two communication pipelines A (27), the two communication pipelines A (27) are positioned in the inner cavity of the sole, the air outlet channels A (18) of the two air inflation control valves (12) are respectively connected with two air inlets of the air bag type shoelace (1) through two communication pipelines B (28), the two communication pipelines B (28) are respectively arranged in the cavities of two opposite shoe body side uppers in a penetrating manner, the air bag type shoelace (1) is a collapsible strip-shaped air bag, the volume is expanded after the air inflation and the total length is reduced, and the volume is reduced and the total length is extended after the air deflation;

the air release unit (4) comprises a valve body B (29) and a valve core B (30), a valve cavity B (31) is arranged in the valve body B (29), the valve cavity B (31) is of a two-stage stepped cavity structure, a large-diameter section B is positioned on the outer side, a small-diameter section B is positioned on the inner side, the outer end of the large-diameter section B extends to the end face of the valve body B (29), and the inner end of the small-diameter section B extends into the valve body B (29); the valve body B (29) is provided with an air inlet channel B (32) and an air outlet channel B (33) which are communicated with the inner end of the valve cavity B (31) at two opposite ends which are vertical to the valve cavity B (31), the outer diameter of the valve core B (30) is matched with the small-diameter section B, the valve core B (30) is inserted into the valve cavity B (31) in a sliding way and is matched with the small-diameter section B in a sliding and sealing way, and the outer end of the valve core B (30) extends to the outside of the valve body B (29) and is connected with a handle B (41); the valve core B (30) is fixedly connected with a limiting ring C (39) in sliding fit with the large-diameter section B at a part corresponding to the large-diameter section B, a limiting ring D (40) is arranged at the outer end of the valve cavity B (31) of the valve body B (29), a spring C (38) is sleeved outside the valve core B (30), and two ends of the spring C (38) are respectively abutted against the limiting ring C (39) and the limiting ring D (40); when the valve core B (30) is at the maximum pulling-out position, the inner end of the valve core B (30) is separated from the small-diameter section B and enters the inside of the large-diameter section B; the air leakage unit (4) is arranged on one side of the sole, one end with a handle B (41) is positioned on the outer side of the shoe body, and the outer ends of the air inlet channel B (32) and the air outlet channel B (33) are connected in series on the middle section of one of the communicating pipelines B (28).

2. An automatic lacing mechanism according to claim 1, wherein the base plate (5) and the footplate (6) are both circular.

3. The automatic lacing mechanism according to claim 1 or 2, further comprising a threaded sleeve (35), wherein the threaded sleeve (35) is sleeved outside the handle A (26) and fixed at the side end of the sole, the handle A (26) is of a cylindrical structure with external threads, the handle A (26) is inserted inside the threaded sleeve (35) through threaded fit, and the outer end of the handle A (26) is provided with a knob (36).