WO2023234068A1

WO2023234068A1 - Load measuring apparatus

Info

Publication number: WO2023234068A1
Application number: PCT/JP2023/018708
Authority: WO
Inventors: 晃和田; 明浦山下; 佳久東本; 優輔長田
Original assignee: デュプロ精工株式会社
Priority date: 2022-05-30
Filing date: 2023-05-19
Publication date: 2023-12-07
Also published as: JP2023175381A

Abstract

[Problem] The present invention addresses the problem of enabling a subject (patient) to easily wear (remove) a footwear main body that serves as a load measuring apparatus in the state where the subject wears comfortable walking shoes and also enabling the subject to perform a walking training in a stable state without any uncomfortable feeling during load measurement. [Solution] Provided is a load measuring apparatus provided with a sole that serves as a footwear sole, a footwear main body composed of at least an upper that holds the arch of a foot, a pressure sensor arranged at the footwear bottom, and a transmission unit for transmitting a signal coming from the pressure sensor in a wireless mode. In the load measuring apparatus, the footwear main body can be attached to a subject in the state where the subject wears or does not wear his/her walking shoes.

Description

load measuring device

The present invention relates to a load measuring device. More specifically, the present invention relates to a foot-mounted load measuring device used for walking training during rehabilitation.

One type of physical therapy for post-operative patients with lower limb fractures, bone and joint diseases, etc. is load-relieving training. In load-bearing training, walking training is performed by placing a load on the patient while limiting the load to a lighter weight than the patient's entire body weight. requires appropriate load control.

In order to perform appropriate load control during training, it is necessary to measure the load acting on the patient's lower limbs during load-relieving training and the like. Patent Document 1 discloses rehabilitation footwear for gait training (load-free gait feedback training device) that allows patients to accurately and in real time know the weight actually applied to their feet during gait training as a numerical value. It is stated that it can be used for load release training.

Utsukai Showa 59-193419

The rehabilitation footwear disclosed in the above-mentioned Patent Document 1 is not intended to be worn while the patient is wearing shoes that the patient is accustomed to wearing, but rather, the rehabilitation footwear that the patient is not accustomed to wearing is not intended to be worn directly on the foot. However, the load measurement will be carried out with a feeling of discomfort. Furthermore, when measuring the load, rehabilitation footwear must be worn only on the side to be measured of both feet, making it difficult to maintain left-right balance and resulting in instability. Rehabilitation footwear for both the left and right sides can be prepared, but the cost is high.

In view of such problems, the present invention allows the person to be measured (patient) to easily attach (attach and remove) the load measuring device to the footwear body while wearing the walking shoes that the person to be measured is accustomed to wearing. In addition, the object is to enable the person to be measured to perform walking training in a stable state without feeling discomfort during load measurement.

In order to achieve the above object, the invention according to claim 1 includes: a sole as a footwear bottom; a footwear main body consisting of an upper that holds at least the instep of the foot; a pressure sensor installed in the footwear bottom; and a transmitter that wirelessly transmits a signal from the pressure sensor, in which the person to be measured is placed in the footwear body with or without walking shoes of the person to be measured. It is characterized by the fact that it can be worn.

The invention according to claim 2 is the load measuring device according to claim 1, wherein the upper has two left and right instep locking pieces that can detachably lock the instep of the foot to the footwear body. It is characterized by being prepared.

The invention according to claim 3 is the load measuring device according to claim 2, wherein the two upper part locking pieces each have a base part fixed to the left and right sides of the sole. The device is characterized in that the other ends of the upper locking pieces are overlapped with each other and connected by a locking member attached to the upper locking piece for mounting.

The invention according to claim 4 is the load measuring device according to claim 3, wherein the locking member is composed of a hook and loop fastener, and the overlapping length of the upper locking piece can be adjusted by changing the locking position. It is characterized by the following.

The invention according to claim 5 is the load measuring device according to claim 3, in which the two instep locking pieces have a male-shaped locking member on the outer surface of one of the instep locking pieces. A hook-and-loop fastener is attached, and a female-type hook-and-loop fastener is attached to the inner surface of the one back-locking piece, and a male-type hook-and-loop fastener is attached to the outer surface of the other back-locking piece. and a female hook-and-loop fastener is attached to the inner surface of the other instep locking piece.

According to a sixth aspect of the present invention, in the load measuring device according to the second aspect, the upper has two left and right heel locking pieces that can detachably lock the heel of the foot to the footwear body. It is also characterized by the following.

The invention according to claim 7 provides a footwear body including a sole as a footwear sole, an upper that holds at least the instep of the foot, a pressure sensor installed in the footwear sole, and a wireless communication system for transmitting signals from the pressure sensor. A load measuring device comprising a transmitting unit that transmits,
The footwear main body is configured to have the same shape on both sides, and the pressure sensors are arranged symmetrically in the width direction of the sole.

According to an eighth aspect of the present invention, in the load measuring device according to the seventh aspect, the footwear bodies are attached to both feet as a pair of left and right feet at the time of load measurement, and one of the footwear bodies worn on both feet is It is characterized in that it is configured as dummy footwear that does not include the pressure sensor and the transmitter.

The invention according to claim 9 is the load measuring device according to claim 8, wherein the load measuring device includes an actuator section that transmits a load to be measured to the pressure sensor, and the dummy footwear is configured to It is characterized in that only the actuator section is arranged.

According to the invention set forth in claim 1, the person to be measured can easily attach (attach and remove) the footwear body serving as a load measuring device while wearing the walking shoes that the person is accustomed to wearing, and During measurement, the person to be measured can practice walking in a stable state without feeling any discomfort. Incidentally, if the person to be measured desires, it is also possible to easily attach (attach and remove) the device to the footwear body without wearing the person's shoes.

According to the invention set forth in claim 2, the upper includes two left and right instep locking pieces that can detachably lock the instep of the foot to the footwear body, so that the shoe (foot) of the person to be measured can be locked. It can be easily attached (attached and detached) to the footwear body. Also, various shoe (foot) sizes can be attached.

According to the invention set forth in claim 3, the base of the two instep locking pieces is fixed to the left and right sides of the sole, and the other end of the instep locking piece is fixed to the left and right sides of the sole. The shoes (feet) of the person to be measured can be easily attached to the footwear body by overlapping each other and connecting them with the locking member attached to the instep locking piece. (attached and detached).

According to the fourth aspect of the invention, since the locking member is constituted by a hook-and-loop fastener, the overlapping length of the upper locking pieces can be easily adjusted by changing the locking position.

According to the invention set forth in claim 5, a male hook and loop fastener is attached to the outer surface of one of the upper locking pieces as a locking member of the two upper locking pieces, and A female hook-and-loop fastener is attached to the inner surface of the piece for locking the upper part, and a male hook-and-loop fastener is attached to the outer surface of the other piece for locking the upper part. A female hook-and-loop fastener is attached to the inside surface of the piece, so when the ends of the instep locking piece are overlapped and connected using the hook-and-loop fastener, whichever side of the back locking piece is on the left or right is the top. Regardless of whether the person being measured is right-handed or left-handed, the shoes (feet) of the person to be measured can be easily attached (attached and detached) to the footwear body using hook-and-loop fasteners. In addition, since female hook-and-loop fasteners are attached to the inner surfaces of the two instep locking pieces, it is possible to prevent the hook-and-loop fasteners from sticking directly to the shoes or socks of the person to be measured (patient). can.

According to the invention as set forth in claim 6, the upper includes two instep locking pieces on the left and right that are capable of removably locking the instep of the foot to the footwear body, and further includes two instep locking pieces that can lock the instep of the foot to the footwear body. Since the device is equipped with two left and right heel locking pieces that can be removably locked, the shoes (feet) of the person to be measured can be more securely attached to the footwear body.

According to the seventh aspect of the present invention, in the load measuring device, the footwear body has the same shape on both sides, and the pressure sensors are arranged symmetrically in the width direction of the sole, so there is no distinction between the left and right sides of the footwear body. Can be installed on either the left or right side. Moreover, the shoes (feet) of the person to be measured can be easily attached to the footwear body.

According to the invention set forth in claim 8, the footwear bodies are worn as a pair on both feet when measuring the load, and one of the footwear bodies worn on both feet is a dummy body that is not equipped with a pressure sensor and a transmitter. Since it is configured as footwear, if the footwear itself is purchased as a set of left and right footwear including dummy footwear, the left-right balance of the person to be measured will be stabilized during load measurement. Furthermore, since there is no distinction between the left and right feet of the footwear body, no matter which foot is to be measured, it is only necessary to replace the left and right feet, which reduces costs.

According to the invention set forth in claim 9, the load measuring device includes an actuator section that transmits the load to be measured to the pressure sensor, and since only the actuator section of the pressure sensor is disposed in the dummy footwear, the load measuring device is , the cost is reduced, and the left-right balance of the person to be measured is stabilized.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole system of the load measuring device of 1st embodiment of this invention. FIG. 3 is a plan view showing the state of the footwear body when it is in use and before it is worn. FIG. 3 is a side view showing a state in which the shoes are attached to the footwear body while still being worn. FIG. 2 is a plan view and a cross-sectional view of the insole with the insole removed from the sole. 5 is an enlarged view of a main part of the cross-sectional view of FIG. 4. FIG. FIG. 2 is a perspective view showing the overall appearance of the pressure sensor. It is a block diagram showing the whole system of a load measuring device. It is a top view showing the setting screen of the present invention in a smartphone. FIG. 3 is a plan view showing a measurement screen of the present invention on a smartphone. FIG. 3 is a flow diagram at the time of setting the present invention. It is a flowchart at the time of the measurement of this invention.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. Here, FIG. 1 is a perspective view showing the entire system of a load measuring device 1 according to an embodiment of the present invention, FIG. 2 is a perspective view showing the state of the footwear main body 10 of the same embodiment during use and before wearing, and FIG. 4 is a plan view showing the shoe 21 of the same embodiment when it is attached to the footwear body 10 while being worn; FIG. 4 is a plan view and a cross-sectional view of the insole 14 removed from the sole 11 of the same embodiment; FIG. 6 is an enlarged view of a main part of the sectional view of FIG. 4 of the same embodiment, and FIG. 6 is a perspective view showing the pressure sensor 61 of the same embodiment.

In this embodiment, a case will be described in which load-relieving training for walking is performed using footwear as the means for holding the feet of the subject, a load sensor built into the sole 11 of the footwear body 10, and the lower limbs as the part to be trained. As shown in FIG. 1, this embodiment includes a footwear main body 10 to be worn on the foot on the side where the subject performs load-release training, a dummy footwear 20 to be worn on the other foot, and a sole 11 as the sole of the footwear. The transmitter 30 includes a pressure sensor (not shown) installed in the pressure sensor (not shown) and a transmitter 30 that wirelessly transmits a signal from the pressure sensor to a receiver 40 such as a smartphone. A hook-and-loop fastener (not shown) is attached to the lower part of the transmitting section 30, and is coupled to a hook-and-loop fastener 51 attached to the upper surface of the upper part of the footwear body 10, and is installed on the upper part so as to be able to come and go. . Further, the transmitter 30 is connected to a pressure sensor inside the sole 11 via a lead wire 31.

FIGS. 2(a) and 2(b) are a plan view showing the footwear body 10 in the load measuring device 1 according to an embodiment of the present invention in a used state and a plan view in a state before being worn. Note that the transmitter 30 is omitted in FIG. 2(a). Further, FIG. 2(b) shows a state in which the insole 14 is removed, and the pressure sensor 61 is exposed. Note that a hook-and-loop fastener (not shown) is attached to the back side of the insole 14, and is coupled to the hook-and-loop fastener 53 on the sole 11 side. As is clear from the above-mentioned figures, the footwear body 10 of this embodiment is exemplified in the form of sandals that can be easily put on and taken off by the person to be measured (patient). However, the footwear main body 10 of the present invention is not limited to the sandal type, but can also be applied as other footwear types. That is, it is only necessary to include at least a sole 11 serving as the sole of the footwear on which the foot is placed, and an upper 15 covering the instep of the foot. The upper 15 is capable of removably locking the instep of the foot to the footwear body 10.

In this footwear body 10, the bases of the instep locking pieces 12 (12a, 12b) are respectively fixed to the left and right sides of the sole 11, and the other ends of the

instep locking pieces

12a, 12b are overlapped with each other. It is in the form of a sandal that is connected by a locking member attached to the

instep locking pieces

12a and 12b. The locking members are composed of hook-and-

loop fasteners

51a and 51b, and the overlapping length of the

upper locking pieces

12a and 12b can be adjusted by changing the locking position. Note that the hook-and-loop fastener is generally referred to as Velcro (registered trademark). Further, as a locking member for the two back locking

pieces

12a and 12b, a male hook-and-loop fastener 51a is attached to the outer surface of one of the back locking pieces 12a. A female hook-and-loop fastener 51a' is attached to the inner surface of the piece 12a, and a male hook-and-loop fastener 51b is attached to the outer surface of the other back-locking piece 12b. A female hook-and-loop fastener 51b' is attached to the inner surface of the fastening piece 12b.

According to this, when the ends of the

upper locking pieces

12a and 12b are overlapped and connected with a hook-and-loop fastener, they can be connected regardless of whether the left or right side of both ends of the upper locking pieces are on top. Whether the measurer is right-handed or left-handed, the shoes (feet) of the person to be measured can be easily attached (attached and detached) to the footwear body using the hook-and-loop fastener. In addition, since female hook-and-loop fasteners 51a' and 51b' are attached to the inner surfaces of the two

instep locking pieces

12a and 12b, respectively, the hook-and-loop fasteners can be attached directly to the shoes or socks of the person being measured (patient). can be prevented from sticking. That is, among the hook-and-loop fasteners, the tips of the male hook-and-

loop fasteners

51a and 51b are hook-shaped and easily stick to (get tangled with) other things. On the other hand, since the tips of the female hook-and-loop fasteners 51a' and 51b' are loop-shaped, they are difficult to stick to other objects (hard to get tangled).
It is for this purpose.

Therefore, as shown in FIG. 2(b), with this footwear body 10, the person to be measured (patient) can hold the foot to be trained with the

instep locking pieces

12a, 12b open on both sides. After the person to be measured is placed on the sole part 11 while wearing the shoes that he or she is accustomed to wearing, as shown in FIG. , 51b can be attached by simply overlapping and joining them together, making it extremely easy for the patient or his/her caregiver to attach.

In addition to the

instep locking pieces

12a and 12b, the upper 15 includes two left and right heel locking pieces 13 (13a, 13b) that can detachably lock the heel of the foot to the footwear body 10. ) may also be configured.

According to this, the shoes (feet) of the person to be measured can be attached to the footwear body more reliably.

FIG. 3 is a side view showing a state in which the person to be measured wears the shoes 21 and attaches them to the footwear body 10. The load measuring device 1 is used in hospitals, rehabilitation facilities, etc. to measure the load applied to the lower limbs of a patient undergoing rehabilitation (load-relief training, etc.).

In walking training for rehabilitation, the person to be measured (patient) wears the footwear body 10 on one foot undergoing rehabilitation (performing load measurement) and wears the dummy footwear 20 on the other foot. Further, at this time, the person to be measured (patient) puts on the footwear body 10 with the shoes 21 on, and puts on the dummy footwear 20 on the other foot, as shown in FIG. Here, the footwear main body 10 is configured to have the same shape on both sides, and the pressure sensors 61 are arranged symmetrically in the width direction of the sole 11. Further, the footwear main body 10 is worn as a pair on both the left and right feet during load measurement, and one of the footwear worn on both feet is configured as a dummy footwear 20 that is not equipped with the pressure sensor 61 and the transmitter 30. . The load measuring device 1 also includes an actuator section that transmits the load to be measured to the pressure sensor 61, and the dummy footwear 20 is provided with only the actuator section of the pressure sensor 61. This will be discussed later.

According to the above, the person to be measured can easily attach (take off) the footwear serving as the load measuring device while wearing the walking shoes that the person is accustomed to wearing, and when measuring the load, The subject can perform walking training in a stable state without feeling any discomfort. Incidentally, if the person to be measured desires, it is also possible to easily attach (attach and remove) the device to the footwear body without wearing the person's shoes.

Further, there is no distinction between the left and right sides of the footwear body 10, and the shoes (feet) of the person to be measured can be easily attached to the footwear body 10. Furthermore, if the footwear body 10 is purchased as a set of left and right footwear including the dummy footwear 20, the left-right balance of the person to be measured is stabilized during load measurement. In addition, since there is no distinction between the left and right feet of the footwear body 10, no matter which foot is to be measured, it is only necessary to replace the left and right feet, which reduces costs. In addition, the load measuring device 1 includes an actuator section that transmits the load to be measured to the pressure sensor 61, and the dummy footwear 20 is provided with only the actuator section of the pressure sensor 61. The left and right balance is stabilized.

[Configuration of weight detection section]
Next, the configuration of the weight detection section using the pressure sensor 61 will be explained using FIGS. 4 to 6. FIG. 4(a) is a plan view of the sole 11 with the insole 14 removed, and FIG. 4(b) is a cross-sectional view thereof (AA cross-sectional view). FIG. 5 is an enlarged view of a main part of the cross-sectional view of FIG. 4. FIG. 6 is a perspective view showing the overall appearance of the pressure sensor 61.

As shown in FIG. 4(a), in the embodiment, pressure sensors 61 (61a, 61b, 61c, 61d) are located at two locations on the sole 11 facing the instep of the foot and at two locations facing the heel. They are arranged symmetrically in the width direction of the sole 11. Note that the number and arrangement of the pressure sensors 61 provided in the sole 11 are not limited to this, and may be changed as appropriate.

In the pressure sensor 61, as shown in FIGS. 4(b) and 5, a sensor body 613 made up of a strain gauge is housed within a rectangular sensor outer frame 611 and attached to the sole 11. Further, as shown in FIG. 4(b), after the

pressure sensors

61a and 61c are inserted into the sole 11, a shank (reinforcing plate) 63 is glued to the sole 11, and the shank 63 and the

pressure sensors

61a and 61c are attached with reference numeral 6111. Fasten with screws at the locations shown. Note that, in FIG. 5, hatching that should be added to the cross sections of the sensor main body 613, the mounting plate 612, the actuator 615, the plate material 614, the actuator 616, the nut 618, and the screw 619 is omitted to make the drawing easier to read. Further, the reference numeral 617 (three locations) indicates a space.

According to this, the sole 11 can be reinforced by the shank 63, and can also serve to prevent the sensor from coming off downward.

Furthermore, an opening 631 is provided in the shank 63 so that the actuator 616 of the pressure sensor 61 can be penetrated to detect the load. Further, a pressure receiving plate 62 is fixed to the lower part of the actuator 616 of each pressure sensor 61 with screws 619. Here, the sole 11 and the pressure receiving plate 62 are made of synthetic resin, and have elasticity to elastically deform when subjected to pressure. Further, the shank 63 is made of rigid synthetic resin or metal.

According to this, when measuring a load, the person to be measured can walk more stably than walking on the floor with the actuator 616 of each pressure sensor 61 protruding without attaching the pressure receiving plate 62. .

Further, the pressure receiving plate 62 is configured to be replaceable by removing the screws 619.

According to this, when the person to be measured walks on the floor during load measurement, if it is difficult to walk on the floor depending on the surface condition such as the material of the floor, the specifications of the pressure receiving plate 62 (the surface condition of the floor side) are determined according to the surface condition. ) can be changed, making walking more stable.

FIG. 6 is a perspective view showing the overall appearance of the pressure sensor 61. The sensor outer frame 611 has a convex protrusion in the center to transmit external loads from feet to the sensor main body 613 inside the sensor outer frame 611. An actuator 616 is provided. Further, the load signal detected by the pressure sensor 61 is output to the transmitter 30 via the lead wire 32.

Specifically, in this embodiment, the pressure sensor 61 uses a commonly used strain gauge type load cell, and as shown in FIG. A mounting plate (flexible body) 612 to which 613 is attached, an actuator 615 as a load transmission section that transmits the load received from the person to be measured to the sensor body 613, an actuator 616, a plate member 614 that closes the space of the actuator 616, and The basic structure includes a sensor outer frame 611 that houses the above-mentioned parts. In the weight detection section using the pressure sensor 61, the mounting plate (flexible body) 612 is deformed via the load transmission section according to the weight actually applied by the feet of the person to be measured (patient), and the mounting plate The electrical resistance value of the strain gauge (sensor main body 613) changes depending on the degree of deformation of the (flexible body) 612, and a load signal corresponding to the external load received is output to the transmitter 30.

The transmitter 30 transmits, as the load signals, a load signal from the pressure sensor 61a, a load signal from the pressure sensor 61b, a load signal from the pressure sensor 61c, and a load signal from the pressure sensor 61d. The CPU 701 calculates four loads as the loads based on the respective load signals, calculates a total load by summing the four calculated loads, and transmits the calculated total load to the receiver 40. Note that the CPU 701 on the transmitter 30 side or the CPU 711 on the receiver 40 side may be used as the load calculation section. Here, the receiving unit 40 of this embodiment is configured with a tablet, a smartphone, etc. that has a portable shape and can be attached to the body.

The dummy footwear 20 is one in which the actuator 616 is fixed to the sensor outer frame 611 in a protruding state.

According to this, when measuring the load, the cost is reduced and the left-right balance of the person to be measured is stabilized.

[Control system]
In FIG. 7, the control unit 70 on the transmitting unit 30 side includes a CPU 701, a memory 702, etc., and the control unit 70 includes a pressure sensor 61a, a pressure sensor 61b, a pressure sensor 61c, a pressure sensor 61d, a transmitting unit 707, and a notification unit. 703 is connected. Further, a switch 706 and a battery 705 are connected to the control unit 70 via a power supply control unit 704 . Further, the control section 71 on the receiving section 40 side includes a CPU 711, a memory 712, etc., and a receiving unit 716, a display section 714, an operation section 715, and a notification section 713 are connected to the control section 71.

As shown in FIG. 7, the transmitting unit 30 is connected to a pressure sensor 61a, a pressure sensor 61b, a pressure sensor 61c, and a pressure sensor 61d via a control unit 70. When switch 706 is turned on, power from battery 705 is supplied to each pressure sensor 61a, pressure sensor 61b, pressure sensor 61c, pressure sensor 61d, and transmitter 30. Thereby, the transmitter 30 wirelessly transmits the signals from each pressure sensor 61a, pressure sensor 61b, pressure sensor 61c, and pressure sensor 61d. More specifically, the transmitter 30 converts analog signals from each pressure sensor 61a, pressure sensor 61b, pressure sensor 61c, and pressure sensor 61d into digital signals. Then, the transmitter 30 samples the digital signal at regular intervals and transmits it to the receiver 40 using the Bluetooth (registered trademark) communication standard.

[Load measurement operation]
Next, a load measuring operation using the load measuring device 1 according to the present invention will be explained using flowcharts shown in FIGS. 10 and 11.

First, when the switch 706 of the transmitting section 30 in the load measuring device 1 is turned on and the switch (not shown) of the receiving section 40 is turned on, a pairing connection in Bluetooth (registered trademark) is performed and when the connection is completed, the receiving section 40 The words "connect" are displayed on the display screen. Next, start the dedicated software (for load measurement) on your smartphone and register the load measurement device on the dedicated software. In registration, the unique ID of the load measuring device is recorded. Also, at the start, a load measuring device with a unique ID is searched for, and connection and communication are performed.

FIG. 10 is a flowchart at the time of initial setting. FIG. 8 is a display screen 80a of the dedicated software (for load measurement) of the smartphone serving as the reception unit 40 at that time.

First, on the display screen 80a shown in FIG. 8, input of the total weight of the person to be measured (patient) is accepted based on the user's operation (S1).

Next, the upper limit ratio to the total weight as the target load is input (S2). Furthermore, the upper limit value is automatically calculated and displayed based on the input upper limit ratio to the total weight (S3). Note that it may be configured such that an upper limit value for the total weight as the target load is input, and the upper limit ratio is automatically calculated and displayed based on the input upper limit value for the total weight.

Next, the lower limit ratio to the total weight as the target load is input (S4). Furthermore, the lower limit value is automatically calculated and displayed based on the input lower limit ratio to the total body weight (S5). Note that a lower limit value for the total weight as the target load may be input, and the lower limit ratio may be automatically calculated and displayed based on the input lower limit value for the total weight. Alternatively, the configuration may be such that the lower limit value input can be set ON/OFF, and the initial setting can be performed only by inputting the upper limit value.

Next, on the display screen 80a shown in FIG. 8, it is confirmed whether the start button 81a is turned on (touched) by the user (S6). For example, the user turns on the start button 81a on the display screen at the timing when the user starts walking training for rehabilitation.

If the start button 81a is not turned on (S6; N), the process returns to S1. If the start button 81a is turned on (S6; Y), the initial setting process ends.

FIG. 11 is a flowchart during load measurement. FIG. 9 shows a load measurement screen in the dedicated software (for load measurement) of the smartphone serving as the reception unit 40 at that time.

First, it is confirmed whether the start button 81a is turned on (touched) by the user (S10). If the start button 81a is not turned on (S10; N), the process waits until the start button 81a is turned on. When the start button 81a is turned on (S10; Y), the display screen 80b shown in FIG. 9 is switched to a load measurement screen (S11). Also, the start button 81a is switched to the stop button 81b.

Next, it is confirmed whether the reset button 82 has been turned on (touched) by the user (S12). If the reset button 82 is turned on (S12; Y), the current measured value is reset to 0 (S13). If the reset button 82 is not turned on (S12; N), the total weight 83, load indicator 84, and waveform (tw) 85 shown on the display screen 80b shown in FIG. 9 are displayed in real time (S14).

Next, it is confirmed whether the waveform displayed in real time falls within the safe area 852 shown on the display screen 80b shown in FIG. 9 (S15).
If it is not within the safe area 852 (S15; N), the process shifts to a subroutine (S16). In this subroutine, the user is notified by changing the warning sound depending on whether the waveform displayed in real time exceeds the upper limit value 851 or falls below the lower limit value 853 shown on the display screen 80b shown in FIG.

If it falls within the safe area 852 (S15; Y), it is confirmed whether the stop button 81b is turned on (touched) (S17). If the stop button 81b is not turned on (S17; N), the process returns to S12. If the stop button 81b is turned on (S17; Y), the display screen 80a is switched to the setting screen (S18) and the load measurement process is ended.

According to the above, the person to be measured can easily attach (attach and remove) the footwear body 10 as a load measuring device while wearing the walking shoes 21 that the person is accustomed to wearing, and also The test subject can practice walking in a stable state without feeling any discomfort. It should be noted that, according to the wishes of the person to be measured, it can be easily attached (attached and detached) to the footwear body 10 without the person's shoes 21 being worn. In addition, in the load measuring device 1, the footwear body 10 has the same shape on the left and right sides, and the pressure sensors 61 are arranged symmetrically in the width direction of the sole 11. shoes 21 (feet) can be easily attached to the footwear body 10.

Note that it is clear that the present invention is not limited to this embodiment, and that this embodiment may be modified as appropriate within the scope of the technical idea of the present invention in addition to what is suggested in this embodiment. be. Further, the number, position, shape, etc. of the constituent members are not limited to those in this embodiment, and can be set to a number, position, shape, etc. suitable for implementing the present invention.

1 Load measuring device 2 Legs 10 Footwear body 11 Sole 12 Instep locking piece 13 Heel locking piece 14 Insole 15 Upper 20 Dummy footwear 21 Non-measuring person's shoes 30 Transmitting unit 31 Lead wire 32 Lead wire 40 Receiving part 51 Velcro fastener (back part)
52 Velcro fastener (heel)
51 Velcro fastener (sole part)
61 Pressure sensor 62 Pressure receiving plate 63 Shank (reinforcing plate)
70 Control section 71 Control section

Claims

A footwear body comprising a sole as a sole, at least an upper that holds the instep of the foot, a pressure sensor installed in the sole of the footwear, and a transmitter that wirelessly transmits a signal from the pressure sensor. , in a load measuring device,
A load measuring device characterized in that a person to be measured can wear the footwear body while wearing or not wearing walking shoes of the person to be measured.
2. The load measuring device according to claim 1, wherein the upper includes two left and right instep locking pieces that can detachably lock the instep of the foot to the footwear body.
The two upper part locking pieces each have a base part fixed to the left and right sides of the sole, and the other ends of the upper part locking pieces are overlapped with each other to lock the upper part. 3. The load measuring device according to claim 2, wherein the load measuring device is connected and mounted by a locking member attached to the portion locking piece.
4. The load measuring device according to claim 3, wherein the locking member is made of a hook-and-loop fastener, and the overlapping length of the upper locking piece can be adjusted by changing the locking position.
As a locking member in the two upper locking pieces, a male hook and loop fastener is attached to the outer surface of one of the upper locking pieces, and a male hook and loop fastener is attached to the inner surface of the one upper locking piece. has a female hook-and-loop fastener attached, a male hook-and-loop fastener is attached to the outside surface of the other back-locking piece, and a female-type hook-and-loop fastener is attached to the inside surface of the other back locking piece. 4. The load measuring device according to claim 3, wherein a hook-and-loop fastener is attached.
3. The load measuring device according to claim 2, wherein the upper further includes two left and right heel locking pieces that can detachably lock the heel of the foot to the footwear body.
A footwear body comprising a sole as a sole, at least an upper that holds the instep of the foot, a pressure sensor installed in the sole of the footwear, and a transmitter that wirelessly transmits a signal from the pressure sensor. , in a load measuring device,
A load measuring device characterized in that the footwear body has the same shape on both sides, and the pressure sensors are arranged symmetrically in the width direction of the sole.
The footwear bodies are worn as a pair on both feet when measuring a load, and one of the footwear bodies worn on both feet is configured as dummy footwear that does not include the pressure sensor and the transmitter. The load measuring device according to claim 7, characterized by:
9. The load measuring device includes an actuator section that transmits the load to be measured to the pressure sensor, and the dummy footwear is provided with only the actuator section of the pressure sensor. Load measuring device.