JP2007260091A - Footwear apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a footwear apparatus for automatically adjusting size. <P>SOLUTION: The footwear apparatus includes body parts 110 into which the feet of a user is inserted, a plurality of sensors 101 provided on each body part 110, and an elastic synthetic fiber 104 forming at least a part of the body part 110. At least one of the sensors 101 includes a function as an inserting detection sensor for detecting the foot inserted into the body part 110. At least one of the sensors includes a function as a fitting state detection sensor for detecting that the body part 110 becomes the size fitted for the foot. The synthetic fiber 104 starts contracting when the inserting detection sensor detects that the foot is inserted into the body part 110. The synthetic fiber 104 stops contracting when the fitting detection sensor detects that the body part 110 contracts to the size fitted for the foot of the user. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to footwear devices.

  Conventionally, in order to purchase footwear such as shoes, it is common for a user to go to a retail store and try on shoes that fit the size of his / her foot.

  In addition, conventional footwear such as shoes, for example, wears a shoe with the shoelace loosened, and tightens the shoelace with the shoe worn, or a hook-and-loop fastener with Velcro (registered trademark), for example, The footwear can be worn while being fitted to the foot by putting on the shoe in a state where it is peeled off from the portion and attaching the hook-and-loop fastener to the main body with an appropriate degree of tightness.

  In addition, as a prior art document relevant to this invention, there exists patent document 1, for example.

  In Patent Document 1, a main body part for inserting a foot, a holding part provided in the main body part for holding the ankle or the upper in a tight state, an electric signal transmitting means for transmitting an electric signal, and a signal from the electric signal transmitting means Receiving the shape memory alloy that opens and closes the holding part from the main body part, and a detecting means disposed on the toe part of the main body part, and when the detecting means detects that the shoe is worn, the electric signal transmitting means A shoe is disclosed that transmits an electrical signal and the shape memory alloy closes the holding portion.

According to Patent Document 1, when a user wears a shoe, the shape memory alloy is deformed into a shape stored in advance, and the shoe is automatically attached to the foot. That is, the technique of Patent Document 1 includes a holding portion that automatically opens and closes instead of a surface fastener of a general surface fastener type shoe.
JP 2000-014402 A

  The conventional method of purchasing footwear such as shoes has several problems.

  The first problem is that it is difficult to find shoes that perfectly fit the size of the user's feet. There are individual differences in the shape and size of the foot, and users have to find a shoe that is close to the shape of their foot and compromise, or purchase expensive custom-made shoes.

  The second problem is that shoe manufacturers need to make multiple sizes for shoes of the same design. In order for a manufacturer to produce shoes that can accommodate many users, it was necessary to expand the range of shoe sizes, and it was necessary to bear the cost. For users, the size range set by the manufacturer was a factor that narrowed the options.

  In the technique of Patent Document 1, when the user wears shoes, the shape memory alloy is deformed into a shape stored in advance, the holding portion is closed, and the shoes are automatically put on the foot. The above first and second problems cannot be solved.

  In addition, footwear such as shoes may change the way in which force is applied from the foot during walking, so that it may not be in a fit state or the load applied to the foot may locally increase.

  In addition, when footwear such as shoes is worn for a long time, the internal temperature and humidity may increase, which may cause discomfort to the user.

  It is an object of the present invention to provide a footwear device that solves the above problems.

  In order to solve the above problems, a footwear device of the present invention comprises a main body part into which a user's foot is inserted, a plurality of sensors provided in the main body part, and at least a part of the main body part, and is expanded and contracted. And at least one of the sensors has a function as an insertion detection sensor for detecting that a user's foot has been inserted into the main body, and at least one of the sensors One is provided with a function as a fit state detection sensor that detects that the main body has a size that fits a user's foot, and the extension body is inserted into the main body by the insertion detection sensor. Contraction starts when it is detected that a foot has been inserted, and contraction ends when the fit state detection sensor detects that the main body has become small enough to fit the user's foot. It is characterized in that.

  In the footwear device of the present invention, the stretchable body is made of a synthetic fiber that contracts upon input of an electrical signal, and the footwear device outputs an electrical signal to the stretchable body to contract the stretchable body. Preferably further means are provided.

  In the footwear device of the present invention, it is preferable that the synthetic fiber is made of a conductive polymer.

  In the footwear device of the present invention, the synthetic fiber preferably connects the plurality of sensors to each other and functions as an electrical signal transmission path between the sensors.

  In the footwear device of the present invention, it is preferable that the sensor also has a function as the electric signal output means.

  In the footwear device of the present invention, the body portion is fitted to the user's foot by the fit state detection sensor even when the stretchable body is stretched during walking of the user wearing the footwear device. It is preferable that the stretchable body is contracted until it is detected.

  In the footwear device of the present invention, the insertion detection sensor is preferably a contact sensor or a pressure sensor.

  In the footwear device of the present invention, the fit state detection sensor is preferably a contact sensor or a pressure sensor.

  In the footwear device of the present invention, at least one of the sensors has a function as a load monitoring sensor that detects that a contact pressure of a foot with respect to the main body exceeds a predetermined value, and the load monitoring sensor When it is detected that the contact pressure of the foot against the main body exceeds the predetermined value, the telescopic body is detected until the load monitoring sensor detects that the contact pressure of the foot against the main body is equal to or less than the predetermined value. Is preferably relaxed.

  In the footwear device of the present invention, at least one of the sensors has a function as a temperature sensor for detecting temperature, and when the temperature sensor detects a temperature exceeding a predetermined value, the stretchable body relaxes. It is preferred that

  In the footwear device of the present invention, at least one of the sensors has a function as a humidity sensor for detecting humidity, and when the humidity sensor detects a humidity exceeding a predetermined value, the stretchable body relaxes. It is preferred that

  In the footwear device of the present invention, it is preferable that the insertion detection sensor detects that the user's heel has been received in the heel portion of the main body.

  The footwear device of the present invention preferably includes a power supply device that supplies power to the sensor, and an operation unit that performs an operation of switching power supply from the power supply device to a state where power is not supplied to the sensor. .

  Further, the footwear device of the present invention includes a main body portion into which a user's foot is inserted, a load monitoring sensor that detects that a contact pressure of the foot with respect to the main body portion exceeds a predetermined value, and at least a part of the main body portion. And when the load monitoring sensor detects that the contact pressure of the foot against the main body exceeds the predetermined value, the load monitoring sensor The stretchable body is relaxed until it is detected that the contact pressure of the foot is equal to or less than the predetermined value.

  Further, the footwear device of the present invention comprises a main body part into which a user's foot is inserted, a temperature sensor, and an elastic body that constitutes at least a part of the main body part and can be expanded and contracted. When the temperature exceeding a predetermined value is detected by the temperature sensor, the stretchable body is relaxed.

  In addition, the footwear device of the present invention includes a main body part into which a user's foot is inserted, a humidity sensor, and an elastic body that constitutes at least a part of the main body part and can be expanded and contracted. When the humidity exceeding a predetermined value is detected by the humidity sensor, the stretchable body is relaxed.

  According to the present invention, a main body portion into which a user's foot is inserted, a plurality of sensors provided in the main body portion, and a telescopic body that constitutes at least a part of the main body portion and can be expanded and contracted are provided. , At least one of the sensors has a function as an insertion detection sensor for detecting that a user's foot is inserted into the main body, and at least one of the sensors includes the main body It has a function as a fit state detection sensor that detects that the size fits the user's foot, and the stretchable body detects that the user's foot is inserted into the main body by the insertion detection sensor. When it is detected that the main body has been reduced to a size that fits the user's foot by the fit state detection sensor, the contraction is terminated. Automatically the main body is fit state to foot when you insert. Therefore, the user can save (or reduce) the trouble of searching for a shoe that fits his / her foot, and the shoe manufacturer does not need (or produces) multiple sizes for the same design shoe. Can reduce the number of sizes needed).

  Further, according to the present invention, there is provided a main body portion into which a user's foot is inserted, a load monitoring sensor that detects that a contact pressure of the foot against the main body portion exceeds a predetermined value, and at least a part of the main body portion. And a telescopic body that can be expanded and contracted, and when the load monitoring sensor detects that the contact pressure of the foot against the main body exceeds the predetermined value, the load monitoring sensor detects the foot against the main body. Since the elastic body is relaxed until it is detected that the contact pressure is equal to or lower than the predetermined value, the load applied to the foot can be limited to the predetermined value or lower.

  Further, according to the present invention, it comprises a main body part into which a user's foot is inserted, a temperature sensor, and at least a part of the main body part. When the temperature sensor detects a temperature exceeding a predetermined value, the stretchable body is relaxed, so that the temperature in the main body can be limited to a predetermined value or less.

  Further, according to the present invention, the main body part into which the user's foot is inserted, a humidity sensor, and at least a part of the main body part, and a telescopic body that can be stretched, the stretch body, When the humidity sensor detects a humidity exceeding a predetermined value, the stretchable body is relaxed, so that the humidity in the main body can be limited to a predetermined value or less.

  Embodiments according to the present invention will be described below with reference to the drawings.

[First Embodiment]
FIG. 1 is a side view showing a footwear device 100 according to the embodiment, FIG. 2 is a bottom view showing a bottom portion of the footwear 100, and FIG. 3 is a perspective view of the footwear 100 as viewed from the right front side.

  For example, as shown in FIGS. 1 to 3, the footwear device 100 according to the present embodiment includes a main body 110 that is formed in the shape of a general athletic shoe and into which a user's foot is inserted.

  The main body 110 includes a plurality of sensors 101, an operation unit 103 (FIGS. 1 and 2) for performing an operation for switching on / off the operation of the sensor 101, and a part of the main body 110 that can be extended and contracted. A plurality of synthetic fibers (stretchable body) 104 constituting the power supply device 105 (FIGS. 1 and 2) that supplies power to the sensor 101 and controls signal transmission and reception between the sensor 101 and the synthetic fiber 104; It is configured with.

  Among the plurality of sensors 101, for example, a sensor indicated as a sensor 101 a in FIGS. 1 and 2 has a function of detecting that a user's foot is inserted into the main body 110 (function as an insertion detection sensor). ).

  As shown in FIGS. 1 and 2, the sensor 101 a is disposed, for example, in a portion of the main body 110 where a foot heel is located.

  Each sensor 101 (including sensor 101a, for example) has a function of detecting that main body 110 has a size that fits a user's foot (has a function as a fit state detection sensor).

  In the case of this embodiment, each sensor 101 consists of a contact sensor or a pressure sensor, for example.

  For example, a plurality of sensors 101 are disposed on the bottom 110A of the main body 110, the upper part (instep part) 110B, and the rear part (part from the heel to the ankle) 110C.

  More specifically, in the bottom portion 110A, for example, a plurality of sensors 101 are circumferentially arranged at predetermined intervals on an edge portion along the outer periphery of the bottom portion 110A. In the upper part 110B, for example, a plurality of sensors 101 are linearly arranged at predetermined intervals from the toe side to the ankle side along substantially the center line of the upper part 110B. Further, in the rear portion 110C, for example, a plurality of sensors 101 are linearly arranged at predetermined intervals from the heel side to the ankle side along substantially the center line of the rear portion 110C.

  The sensor 101 is arranged in an appropriate quantity at an appropriate position according to the shape, capacity, usage, etc. of the main body 110, and is limited to the number and arrangement shown in FIGS. It is not a thing.

  The sensor 101 may be disposed at a position that directly contacts the foot, but it is more preferable that the sensor 101 is built in the main body 110 and does not directly contact the foot. In the present embodiment, for example, the sensor 101 is built in the main body 110.

  The operation unit 103 is for switching on / off the power supply from the power supply device 105 to the sensor 101. The operation unit 103 may be, for example, a push type, a slide type, or a rotary type, but may be other types of operation.

  The synthetic fiber 104 connects the sensors 101 to each other.

  Further, the synthetic fiber 104 electrically connects the sensors 101 to each other and electrically connects the sensors 101 to the power supply device 105.

  The synthetic fiber 104 starts to contract when the sensor 101a detects that the user's foot is inserted into the main body 110, and the main body 110 is reduced to a size that fits the user's foot by each sensor 101. When it is detected that it has become, the contraction is terminated.

  Such a synthetic fiber 104 is made of, for example, a conductive polymer polymer that can be expanded and contracted by a signal (mainly an electrical signal). The polymer polymer that operates in a dry environment corresponds to a piezoelectric polymer or an electrostrictive polymer.

  However, the synthetic fiber 104 is not limited to the conductive polymer polymer as long as it can be provided in the footwear device 100 and has a characteristic of realizing expansion and contraction by signals. For example, any material having the characteristic of realizing expansion and contraction by a signal, such as an electrostatic actuator that reacts by electrostatic force, can be used as the material constituting the synthetic fiber 104 in the same manner.

  Further, the degree of conductivity of each synthetic fiber 104 included in the footwear device 100 does not need to be uniform, and appropriate conductivity is provided depending on the material, shape, position, and the like.

  For example, as shown in FIG. 2, the synthetic fiber 104 sequentially connects the sensors 101 arranged along the outer periphery of the bottom portion 110 </ b> A in a circumferential manner at the bottom portion 110 </ b> A.

  Further, as shown in FIGS. 3 and 1, the synthetic fiber 104 is disposed on the sensor 101 disposed on one side of the bottom 110A, the sensor 101 disposed on the upper 110B, and the other side of the bottom 110A. The sensors 101 are sequentially connected in an arc.

  Moreover, the synthetic fiber 104 has connected the sensor 101 arrange | positioned in the upper part 110B to the linear form sequentially, as shown in FIG.3 and FIG.1.

  Further, as shown in FIG. 1, the synthetic fiber 104 sequentially connects the sensors 101 arranged in the rear portion 110 </ b> C in a straight line.

  In addition, the synthetic fiber 104 is arrange | positioned in a suitable position according to the shape of the footwear apparatus 100, a capacity | capacitance, a use, etc., and is limited to the number and arrangement | positioning shown by FIG. It is not something.

  The synthetic fiber 104 is built in the main body 110, for example.

  That is, the main body 110 includes a covering portion 111 having at least a two-layer structure of the outer peripheral side and the inner peripheral side, and the synthetic fiber 104, the sensor 101, and the sensor 101 and the outer peripheral side portion of the covering portion 111 A power supply device 105 is arranged.

  In FIGS. 1 to 3, the covering portion 111 is seen through in order to show the components built in the covering portion 111 such as the sensor 101, the synthetic fiber 104, and the power supply device 105. For example, the fibers 104 and the power supply device 105 are not visible from the outside of the footwear device 100.

  The covering portion 111 is made of a material constituting those portions of general footwear such as cloth or other fibers in the portion including the upper portion 110B, the side portion, and the rear portion 110C of the main body portion 110. Become. Moreover, the bottom part (shoe bottom part) of the coating | coated part 111 consists of material which comprises the bottom part of common footwear, such as rubber | gum, a synthetic rubber, a sole material, for example.

  Next, the operation will be described.

  First, an operation of putting on the footwear device 100 will be described.

  First, the user operates the operation unit 103 to turn on the power supply device 102. Thereby, the power supply apparatus 102 will be in the state ready for transmitting / receiving an electrical signal mutually with the sensor 101 and the synthetic fiber 104. FIG. In this state, the synthetic fiber 104 is relaxed.

  Subsequently, the user inserts a foot into the main body 110. Then, the sensor 101 a detects that the user's foot has been inserted into the main body 110. That is, when the sensor 101a is a contact sensor, the sensor 101a detects that a heel has come into contact with the sensor 101a. Alternatively, when the sensor 101a is a pressure sensor, the sensor 101a detects that the pressure applied to the sensor 101a is equal to or higher than the first predetermined value A.

  When it is detected that the user's foot has been inserted into the main body 110, the sensor 101a starts outputting an electrical signal for contracting the synthetic fiber 104 to the synthetic fiber 104 connected to the sensor 101a. The electrical signal is also transmitted to the sensor 101 to which the synthetic fiber 104 is connected via the synthetic fiber 104. Similarly, the sensor 101 that receives the electrical signal also receives the synthetic signal to which the sensor 101 is connected. The output of an electrical signal for contracting the synthetic fiber 104 to the fiber 104 is started. As described above, each sensor 101 also has a function as an electrical signal output unit that outputs an electrical signal to the synthetic fiber 104 and contracts the synthetic fiber 104. The synthetic fiber 104 connects the plurality of sensors 101 to each other and functions as an electrical signal transmission path between the sensors 101.

  In this way, each sensor 101 shifts to an output state of an electrical signal that causes the synthetic fiber 104 to contract.

  Each synthetic fiber 104 starts to contract when receiving an electrical signal from the sensor 101. With this contraction, the size of the main body 110 becomes smaller. That is, the entire main body 110 moves in a direction to press the foot.

  Eventually, when it is detected that the main body 110 has become smaller than each sensor 101 to fit the user's foot, each sensor 101 outputs an electrical signal to the synthetic fiber 104 connected to the sensor 101. finish.

  Here, when each sensor 101 is a contact sensor, the output of the electrical signal to the synthetic fiber 104 connected to the sensor 101 is finished in order from the sensor 101 that detects contact with the foot.

  When each sensor 101 is a pressure sensor, the output of the electrical signal to the synthetic fiber 104 connected to the sensor 101 is finished in order from the sensor 101 whose detected pressure is equal to or greater than the predetermined value B.

  As the second predetermined value B, an appropriate value can be set according to the number and position of each sensor 101.

  As a result, the contraction of the synthetic fiber 104 ends when the entire main body 110 is fitted to the foot.

  With the above operation, the user can automatically fit the size of the main body 110 to the foot by putting the foot into the main body 110.

  Next, an operation when the user walks will be described.

  When walking, a force is applied to the main body 110 from the foot in a manner different from that when the foot is stopped, so that it is assumed that the synthetic fiber 104 extends.

  The elongation of the synthetic fiber 104 reduces the degree of adhesion of the main body 110 to the user's foot. That is, the main body 110 is partially out of fit with the foot.

  Therefore, each sensor 101 is in a non-contact state with respect to the user's foot in the case of a contact sensor, or when the contact pressure on the user's foot is less than a second predetermined value B in the case of a pressure sensor. Then, an electrical signal for contracting the synthetic fiber 104 connected to the sensor 101 is output.

  As a result, the footwear device 100 can be stably attached to the foot continuously even during walking.

  That is, even when the synthetic fiber 104 is stretched during walking of the user wearing the footwear device 100, the synthetic fiber 104 remains until the sensor unit 101 detects that the main body 110 is fitted to the user's foot. Shrinked.

  Furthermore, the footwear device 100 has a function of reducing the load on the foot, in addition to the function for stable wearing.

  For example, as shown in FIG. 2, when the pressure received by the sensor 101 disposed on the bottom 110 </ b> A from the sole of the foot exceeds a third predetermined value, the sensor 101 generates an electrical signal that relaxes the surrounding synthetic fiber 104. Output.

  As a result, the load on the entire foot during walking can be reduced without the load being concentrated on a specific portion of the foot.

  Thus, for example, each sensor 101 disposed on the bottom 110A has a function as a load monitoring sensor that detects that the contact pressure of the foot with respect to the main body 110 exceeds a predetermined value (third predetermined value), When the sensor 101 detects that the contact pressure of the foot with respect to the main body 110 has exceeded the third predetermined value, the sensor 101 has detected that the contact pressure of the foot with respect to the main body 110 has become equal to or less than the third predetermined value. The synthetic fiber 104 is relaxed until detected.

  Next, an operation for removing the footwear device 100 will be described.

  The user operates the operation unit 103 to release the input state of the power from the power supply device 105 to the sensor 101, and interrupts transmission / reception of electric signals by the sensor 101. Thereby, the operation of the sensor 101 is stopped.

  By this operation, the sensor 101 does not output an electrical signal for contracting the synthetic fiber 104, so that the synthetic fiber 104 can be relaxed. Therefore, the user can take off the footwear device 100 after sufficiently relaxing the synthetic fiber 104.

  According to the first embodiment as described above, when the user puts his / her foot on the footwear device 100, the sensor 101 that senses contact or pressure causes the synthetic fiber 104 to contract by an electrical signal, and the main body portion 110 can be autonomously and stably mounted in the shape of the user's foot.

  Further, during walking, the sensor 101 senses foot contact or pressure, maintains the contraction degree and rigidity of the synthetic fiber 104 within a certain range, and allows the footwear device 100 to be stably worn continuously.

  The user operates the operation unit 103 to release the input state of the power supply device 105 and stop the operation of the sensor 101, so that the synthetic fiber 104 can be relaxed and the footwear device 100 can be taken off.

  Using the footwear device 100 eliminates the need for shoe manufacturers to produce multiple sizes for the same design shoes (or reduce the number of sizes that need to be produced), design design, etc. This makes it possible to invest more efficiently. In addition, the user can save (or reduce) the trouble of searching for a shoe that fits his / her foot.

[Second Embodiment]
In the second embodiment, each sensor 101 is configured to be able to detect temperature and humidity. That is, the sensor 101 has functions as a temperature sensor and a humidity sensor.

  When the sensor 101 detects the temperature exceeding the fourth predetermined value or detects the humidity exceeding the fifth predetermined value, the sensor 101 causes the synthetic fiber 104 to be connected to the synthetic fiber 104 connected to the sensor 101. An electric signal for relaxing is output, and the compression density of the synthetic fiber 104 is reduced. This operation makes it possible to maintain the breathability of the footwear device 100 during walking within a certain range.

  According to the second embodiment as described above, the sensor 101 senses temperature and humidity, maintains the shrinkage and density of the synthetic fiber 104 in a certain range, and optimizes the breathability of the footwear device 100. Can keep.

  In each of the above-described embodiments, the example in which the footwear device 100 is the shape / material / use of an athletic shoe has been described. However, the present invention is not limited to this example, and the shape / material such as casual shoes, business shoes, design shoes, etc. The same applies to footwear having materials and uses.

  In the above-described embodiment, the example in which the synthetic fiber 104 constitutes only a part of the main body 110 has been described. However, it is also assumed that all the fibers constituting the main body 110 become the synthetic fiber 104. Even in this case, appropriate conductivity is provided depending on the material, shape, position, and the like of the synthetic fiber 104.

  In the above embodiment, the example in which the sensor 101 has a function as a contact sensor, a pressure sensor, a temperature sensor, or a humidity sensor has been described. For example, the sensor 101 can measure the position of the user by providing functions as a distance sensor, an optical position sensor, a magnetic force sensor, a position information positioning sensor, a radio frequency transmission and a reception sensor.

  Furthermore, by providing the sensor 101 with the functions of a pressure sensor, a humidity sensor, a speed sensor, and an acceleration sensor, it is possible to measure the state of the user during walking, such as muscle movement, how to apply pressure, sweating, and body temperature. Can do. That is, it can be applied to health medicine and sports medicine.

1 is a side view of a footwear device. It is a bottom view of the footwear device. 1 is a perspective view of a footwear device.

Explanation of symbols

110 Body 101 Sensor (Fit state detection sensor, electrical signal output means, load monitoring sensor, temperature sensor, humidity sensor)
101a sensor (insertion detection sensor, fit state detection sensor, electrical signal output means, temperature sensor, humidity sensor)
103 Operation unit 104 Synthetic fiber (elastic body)
105 Power supply

Claims (16)

A body part into which a user's foot is inserted;
A plurality of sensors provided in the main body,
Constituting at least a part of the main body, and a stretchable body that can be stretched;
With
At least one of the sensors includes a function as an insertion detection sensor that detects that a user's foot has been inserted into the main body.
At least one of the sensors includes a function as a fit state detection sensor that detects that the main body has a size that fits a user's foot,
When the insertion detection sensor detects that the user's foot has been inserted into the main body, the elastic body starts to contract, and the fit state detection sensor allows the body to fit to the user's foot. The footwear device is characterized in that the contraction is terminated when it is detected that the size of the portion is reduced. The stretchable body is made of a synthetic fiber that contracts upon input of an electrical signal,
The footwear device according to claim 1, further comprising an electric signal output unit that outputs an electric signal to the stretchable body and contracts the stretchable body.   The footwear device according to claim 2, wherein the synthetic fiber is made of a conductive polymer polymer.   The footwear device according to claim 2 or 3, wherein the synthetic fiber connects the plurality of sensors to each other and functions as an electric signal transmission path between the sensors.   The footwear device according to any one of claims 2 to 4, wherein the sensor also has a function as the electric signal output means.   Even when the stretchable body is stretched during walking of the user who wears the footwear device, the stretchable body is detected until the body portion is fitted to the user's foot by the fit state detection sensor. The footwear device according to claim 1, wherein the footwear is contracted.   The footwear device according to any one of claims 1 to 6, wherein the insertion detection sensor is a contact sensor or a pressure sensor.   The footwear device according to any one of claims 1 to 7, wherein the fit state detection sensor is a contact sensor or a pressure sensor. At least one of the sensors has a function as a load monitoring sensor that detects that the contact pressure of the foot with respect to the main body exceeds a predetermined value,
When the load monitoring sensor detects that the contact pressure of the foot against the main body exceeds the predetermined value, the load monitoring sensor detects that the contact pressure of the foot against the main body is equal to or less than the predetermined value. The footwear device according to any one of claims 1 to 8, wherein the stretchable body is relaxed until it is finished. At least one of the sensors has a function as a temperature sensor for detecting temperature,
The footwear device according to any one of claims 1 to 9, wherein when the temperature exceeding a predetermined value is detected by the temperature sensor, the stretchable body is relaxed. At least one of the sensors has a function as a humidity sensor for detecting humidity,
The footwear device according to any one of claims 1 to 10, wherein when the humidity sensor detects a humidity exceeding a predetermined value, the stretchable body is relaxed.   The footwear device according to any one of claims 1 to 11, wherein the insertion detection sensor detects that a user's heel is within a heel portion of the main body. A power supply for supplying power to the sensor;
An operation unit for performing an operation of switching to a state in which power is supplied from the power supply device to the sensor or not, and
The footwear device according to any one of claims 1 to 12, further comprising: A body part into which a user's foot is inserted;
A load monitoring sensor for detecting that the contact pressure of the foot against the main body exceeds a predetermined value;
Constituting at least a part of the main body, and a stretchable body that can be stretched;
With
When the load monitoring sensor detects that the contact pressure of the foot against the main body exceeds the predetermined value, the load monitoring sensor detects that the contact pressure of the foot against the main body is equal to or less than the predetermined value. The footwear device is characterized in that the stretchable body is relaxed until it reaches the end. A body part into which a user's foot is inserted;
A temperature sensor;
Constituting at least a part of the main body, and a stretchable body that can be stretched;
With
The footwear device according to claim 1, wherein the elastic body is relaxed when a temperature exceeding a predetermined value is detected by the temperature sensor. A body part into which a user's foot is inserted;
A humidity sensor;
Constituting at least a part of the main body, and a stretchable body that can be stretched;
With
The footwear device according to claim 1, wherein when the humidity exceeding the predetermined value is detected by the humidity sensor, the stretchable body is relaxed.

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