Wearable device

Abstract

This wearable device is provided with a base part (100) configured from a sheet-like first base material (101a) and a sheet-like second base material (101b) that are rotatably coupled to each other. The wearable device is also provided with a first connector (102a), a second connector (102b), a third connector (103a), a fourth connector (103b), a first wire (104a), and a second wire (104b). The wearable device is also provided with a coupling shaft (105) and a sliding groove (106). The coupling shaft (105) is provided in a manner protruding at a position closer to an end portion, as compared to the third connector (103a), of the first base material (101a) in an inner region (100a) of the base part (100), and is slidably inserted into the sliding groove (106).

Description

Wearable device

[0001] The present invention relates to a wearable device.

[0002] The number of patients with heart disease is increasing year by year. For early detection, continuous electrocardiogram waveform measurement for a long time in daily life is necessary. For this reason, development of wearable devices capable of electrocardiogram waveform measurement not only in hospitals and facilities but also in the daily life of patients at home is in progress. For example, a Holter electrocardiograph such as Non-Patent Document 1 is commercially available (Non-Patent Document 1).

[0003] Such an electrocardiograph can perform stable measurement even when the wearer moves the body and is suitable for long-term measurement. However, since a Holter electrocardiograph requires wiring to be routed and a plurality of electrodes to be attached at correct positions, it is troublesome for the user and at the same time there is a problem with the feeling of wearing. In addition, since the price is also in the hundreds of thousands of yen, there is also an issue in terms of cost.

[0004] The above problems can be improved by making the electrocardiograph into a patch-type configuration consisting of a terminal and an adapter with electrodes. An example of a patch-type electrocardiograph is shown in FIG. 8. The patch-type electrocardiograph is composed of a measuring device 130 that measures a biological signal and an adapter 200. The measuring device 130 processes the measured biological signal and wirelessly transmits it to an external device.

[0005] The adapter 200 includes a base material 201 made of a flexible material, first electrodes 203a and 203b formed on the surface of the base material 201 on the side that contacts the human body 231 in the outer region, and first connectors 204a and 204b provided in the inner region. The first connectors 204a and 204b are paired with the connectors of the measuring device 130 respectively and are detachable. Examples of the first connectors 204a and 204b include snap buttons (such as American snaps). In addition, an adhesive sheet 202 is provided at the location where it contacts the human body 131. The adhesive sheet 202 is a double-sided adhesive sheet for living bodies.

[0006] These small electrode-equipped adapters can be mass-produced and disposable, which can help reduce the cost of wearable devices. Furthermore, since the electrode-equipped adapters are simply attached to a part of the body, they are easy to use and improve user convenience.

[0007] promed, "Holter ECG", Promed Technology Co., Ltd., [Retrieved October 21, 2020], (https: / / www.promed-tech.com / a / products / lm1 / 169.html).

[0008] However, with the technology described above, when a woman wears the patch-type electrocardiograph consisting of a measuring device and adapter under her underwear, she may experience discomfort such as pain due to the tightness of the underwear.

[0009] This invention was made to solve the above-mentioned problems and aims to enable wearable devices to be worn without causing discomfort.

[0010] The wearable device according to the present invention comprises a base composed of a sheet-like first substrate and a sheet-like second substrate rotatably connected to each other, a first connector formed on the back surface of the first substrate in the outer region of the base, a second connector formed on the back surface of the second substrate in the outer region of the base, a third connector formed on the surface of the first substrate in the inner region of the base, a fourth connector formed on the surface of the second substrate in the inner region of the base, a first wiring formed on the first substrate connecting the first connector and the third connector, and a second connector formed on the second substrate. The first and second base materials are pivotally connected to each other at the location of the coupling shaft and the sliding groove, and the third and fourth connectors are rotatable relative to each other at a certain distance. The sliding groove is formed such that the third and fourth connectors are rotatable relative to each other at a certain distance.

[0011] The wearable device according to the present invention comprises a base composed of a sheet-like first substrate and a sheet-like second substrate rotatably connected to each other, a first connector formed on the back surface of the first substrate in the outer region of the base, a second connector formed on the back surface of the second substrate in the outer region of the base, a third connector formed on the surface of the first substrate in the inner region of the base, a fourth connector formed on the surface of the second substrate in the inner region of the base, a first wiring formed on the first substrate connecting the first connector and the third connector, a second wiring formed on the second substrate connecting the second connector and the fourth connector, and the first substrate in the inner region of the base The first sliding groove is formed in an arc shape centered on the third connector on the end side of the third connector, the second sliding groove is formed in an arc shape centered on the fourth connector on the end side of the fourth connector in the inner region of the base of the second base material, and the coupling shaft pivotally connects the first base material and the second base material at the portions of the first sliding groove and the second sliding groove, the first base material and the second base material are rotatable relative to each other at a constant distance between the third connector and the fourth connector, and the first sliding groove and the second sliding groove are formed such that the first base material and the second base material are rotatable relative to each other while the third connector and the fourth connector are arranged in a straight line with the coupling shaft in between.

[0012] As described above, according to the present invention, since the first base material equipped with the first connector and the third connector and the second base material equipped with the second connector and the fourth connector are rotatable relative to each other, a wearable device can be attached without causing discomfort.

[0013] Figure 1A is a plan view showing the configuration of a wearable device according to Embodiment 1 of the present invention. Figure 1B is a cross-sectional view showing the configuration of a wearable device according to Embodiment 1 of the present invention. Figure 2 is a plan view showing the configuration of a wearable device according to Embodiment 1 of the present invention. Figure 3 is an explanatory diagram showing an example of wearing a wearable device according to an embodiment of the present invention. Figure 4 is a flowchart for explaining the procedure for wearing a wearable device according to Embodiment 1 of the present invention. Figure 5 is a configuration diagram showing the configuration of another wearable device according to Embodiment 1 of the present invention. Figure 6A is a plan view showing the configuration of a wearable device according to Embodiment 2 of the present invention. Figure 6B is a cross-sectional view showing the configuration of a wearable device according to Embodiment 2 of the present invention. Figure 7 is a plan view showing the configuration of a wearable device according to Embodiment 2 of the present invention. Figure 8 is a cross-sectional view showing the configuration of a typical patch-type electrocardiograph.

[0014] The following describes a wearable device according to an embodiment of the present invention.

[0015] [Embodiment 1] First, a wearable device according to Embodiment 1 of the present invention will be described with reference to Figures 1A, 1B, and 2. Figure 1B shows a cross-section of the line aa' in Figure 1A.

[0016] This wearable device comprises a base portion 100 composed of a sheet-like first base material 101a and a sheet-like second base material 101b that are rotatably connected to each other. It also includes a first connector 102a, a second connector 102b, a third connector 103a, a fourth connector 103b, a first wiring 104a, and a second wiring 104b. Furthermore, it includes a coupling shaft 105 and a sliding groove 106.

[0017] The first connector 102a is formed on the back surface of the first substrate 101a in the outer region 100b of the base 100. The second connector 102b is formed on the back surface of the second substrate 101b in the outer region 100b of the base 100.

[0018] The third connector 103a is formed on the surface of the first substrate 101a in the inner region 100a of the base 100. The fourth connector 103b is formed on the surface of the second substrate 101b in the inner region 100a of the base 100.

[0019] The first wiring 104a connects the first connector 102a and the third connector 103a formed on the first substrate 101a. The second wiring 104b connects the second connector 102b and the fourth connector 103b formed on the second substrate 101b.

[0020] The coupling shaft 105 is provided protruding from the end side of the third connector 103a of the first base material 101a in the inner region 100a of the base portion 100. The sliding groove 106 is also formed in the inner region 100a of the base portion 100 on the end side of the fourth connector 103b of the second base material 101b. The coupling shaft 105 is slidably inserted into the sliding groove 106.

[0021] Furthermore, the end surface 107 of the second base material 101b facing the first base material 101a has an arc shape when viewed in plan from the direction normal to the plane of the second base material 101b. In addition, the end surface of the first base material 101a facing the second base material 101b is provided with a guide 108 that slides along the arc shape of the end surface 107 of the second base material 101b.

[0022] A sliding groove 106 is formed between the first base material 101a and the second base material 101b so that the third connector 103a and the fourth connector 103b can rotate relative to each other at a certain distance. Furthermore, a sliding groove 106 is formed between the first base material 101a and the second base material 101b so that they can rotate relative to each other while the distance between the first connector 102a and the second connector 102b does not fall below a certain level. For example, by appropriately setting the groove length of the sliding groove 106, it is possible to ensure that the distance between the first connector 102a and the second connector 102b does not fall below a certain level.

[0023] For example, the first base material 101a can have a laminated structure consisting of a lower layer 111a, an intermediate layer 112a, and an upper layer 113a. Similarly, the second base material 101b has a laminated structure consisting of a lower layer 111b, an intermediate layer 112b, and an upper layer 113b.

[0024] For example, the first wiring 104a is formed in the intermediate layer 112a. The second wiring 104b is formed in the intermediate layer 112b. Also, for example, the coupling shaft 105 is provided as a protrusion on the lower layer 111a, and the sliding groove 106 penetrates the intermediate layer 112b and is formed in the intermediate layer 112b.

[0025] Furthermore, for example, the end surface 107 of the upper layer 113b facing the first base material 101a has an arc shape in plan view, and a guide 108 is provided on the end surface of the intermediate layer 112a facing the second base material 101b.

[0026] The first base material 101a and the second base material 101b can be made from a flexible material. For example, they can be made from silicone rubber, polyethylene, foamed polyethylene, polyimide, PET (polyethylene terephthalate), PP (polypropylene), PVC (polyvinyl chloride), etc.

[0027] A biomedical electrode 120 is connected to the first connector 102a and the second connector 102b. The biomedical electrode 120 comprises an electrode 122 for measuring biological signals, a connector 123 for connecting to the first connector 102a and the second connector 102b, and an adhesive substrate 124 for adhering to the skin of the human body 131. These are supported by a support 121. A commonly available conductive gel electrode can be used as the biomedical electrode 120.

[0028] Furthermore, the third connector 103a and the fourth connector 103b are connected to a measuring device 130 that measures biological signals. The measuring device 130 processes the biological signals measured by the bioelectrode 120 and transmits them wirelessly to an external device. Either the third connector 103a or the fourth connector 103b can be fixedly connected to the measuring device 130.

[0029] The first connector 102a, the second connector 102b, the third connector 103a, and the fourth connector 103b can be made from, for example, snap buttons (such as American snaps) or magnetic fasteners. The first wiring 104a and the second wiring 104b can be made from, for example, Ag / AgCl sheets, silver paste, copper foil, conductive fabric, etc.

[0030] As shown in Figure 2, the wearable device according to Embodiment 1 has a coupling shaft 105 and a sliding groove 106 at its center, and each of the first base material 101a and the second base material 101b is rotatable on a plane parallel to the plane of each base material. By rotating each of the first base material 101a and the second base material 101b, they can be made into a V shape. Furthermore, since the third connector 103a and the fourth connector 103b of the first base material 101a and the second base material 101b rotate relative to each other at a constant distance, the measuring device 130 can be attached even when it is in a V shape.

[0031] Furthermore, if the distance between the two bioelectrodes 120 falls below a certain level, the biosignal level may decrease, making diagnosis difficult. In contrast, the first substrate 101a and the second substrate 101b rotate relative to each other while maintaining a distance between the first connector 102a and the second connector 102b that does not fall below a certain level, thus suppressing a decrease in the signal level.

[0032] As described above, by using a V-shape, as shown in Figure 3, the bioelectrode attachment section 152 can be positioned between the worn underwear 151 and the human body, and the measuring device 130 can be positioned outside the underwear 151. Since the thick measuring device 130 is positioned outside the underwear 151, discomfort caused by tightness from the underwear 151 can be eliminated, and the wearable device can be worn without discomfort.

[0033] Next, an example of the procedure for attaching a wearable device according to the embodiment will be described with reference to Figure 4.

[0034] First, in the first step S101, the bio-electrodes 120 are attached to the first connector 102a and the second connector 102b. Then, in the second step S102, the measuring device 130 is attached to the third connector 103a and the fourth connector 103b. Note that the order of the first step S101 and the second step S102 can be reversed. Next, in the third step S103, the wearable device with the bio-electrodes 120 and measuring device 130 attached is attached to the human body 131. When attaching the wearable device to the skin of the human body 131, it is important to ensure that both bio-electrodes 120 are in close contact with the skin.

[0035] Furthermore, as shown in Figure 5, the above-described wearable device can be configured to have inclined regions 109a and 109b on each of the first substrate 101a and the second substrate 101b, which slope gently from the inner region 100a to the outer region 100b.

[0036] [Embodiment 2] Next, a wearable device according to Embodiment 2 of the present invention will be described with reference to Figures 6A, 6B, and 7. Note that Figure 6B shows a cross-section of the line aa' in Figure 6A.

[0037] This wearable device comprises a base portion 100' composed of a sheet-like first base material 101'a and a sheet-like second base material 101'b that are rotatably connected to each other. It also includes a first connector 102a, a second connector 102b, a third connector 103a, a fourth connector 103b, a first wiring 104a, and a second wiring 104b. Furthermore, it includes a coupling shaft 105', a first sliding groove 106'a, and a second sliding groove 106'b.

[0038] The first connector 102a is formed on the back surface of the first substrate 101'a in the outer region 100b of the base 100'. The second connector 102b is formed on the back surface of the second substrate 101'b in the outer region 100b of the base 100'.

[0039] The third connector 103a is formed on the surface of the first substrate 101'a in the inner region 100a of the base 100'. The fourth connector 103b is formed on the surface of the second substrate 101'b in the inner region 100a of the base 100'.

[0040] The first wiring 104a connects the first connector 102a and the third connector 103a formed on the first substrate 101'a. The second wiring 104b connects the second connector 102b and the fourth connector 103b formed on the second substrate 101'b.

[0041] The first sliding groove 106'a is formed in an arc shape centered on the third connector 103a in the inner region 100a of the base 100', on the side of the first base material 101'a that is further from the third connector 103a. The second sliding groove 106'b is formed in an arc shape centered on the fourth connector 103b in the inner region 100a of the base 100', on the side of the second base material 101'b that is further from the fourth connector 103b. The coupling shaft 105' pivotally connects the first base material 101'a and the second base material 101'b at the portions of the first sliding groove 106'a and the second sliding groove 106'b.

[0042] The first base material 101'a and the second base material 101'b are rotatable relative to each other with the third connector 103a and the fourth connector 103b at a fixed distance from each other. Furthermore, the first sliding groove 106'a and the second sliding groove 106'b are formed so that the first base material 101'a and the second base material 101'b can rotate relative to each other when the third connector 103a and the fourth connector 103b are arranged in a straight line with the coupling shaft 105' in between.

[0043] Furthermore, the first sliding groove 106'a and the second sliding groove 106'b are formed such that the first base material 101'a and the second base material 101b' can rotate relative to each other while the distance between the first connector 102a and the second connector 102b does not fall below a certain level. For example, by appropriately setting the groove lengths of the first sliding groove 106'a and the second sliding groove 106'b, the distance between the first connector 102a and the second connector 102b can be kept above a certain level.

[0044] For example, the first base material 101'a can have a laminated structure of a lower layer 111'a, an intermediate layer 112'a, and an upper layer 113'a. Similarly, the second base material 101'b has a laminated structure of a lower layer 111'b, an intermediate layer 112'b, and an upper layer 113'b.

[0045] For example, the first wiring 104a is formed in the intermediate layer 112'a. Also, the second wiring 104b is formed in the intermediate layer 112'b. Further, for example, the first sliding groove 106'a is formed through the upper layer 113'a in the upper layer 113'a and is formed through the lower layer 111a in the lower layer 111a at the same position. Also, the second sliding groove 106'b is formed through the intermediate layer 112'b in the intermediate layer 112'b. Also, the coupling shaft 105' passes through the first sliding groove 106'a and the second sliding groove 106'b.

[0046] Note that the first base material 101'a and the second base material 101'b can be composed of a flexible material. For example, it can be composed of silicone rubber, polyethylene, foamed polyethylene, polyimide, PET (polyethylene terephthalate), PP (polypropylene), PVC (polyvinyl chloride), etc.

[0047] A biological electrode 120 is connected to the first connector 102a and the second connector 102b. The biological electrode 120 includes an electrode 122 for measuring a biological signal, a connector 123 for connecting to the first connector 102a and the second connector 102b, and an adhesive base material 124 for closely adhering to the skin of the human body 131. These are supported by a support 121. The biological electrode 120 can use a commercially available conductive gel electrode.

[0048] Also, a measuring device 130 for measuring a biological signal is connected to the third connector 103a and the fourth connector 103b. The measuring device 130 processes the biological signal measured by the biological electrode 120 and wirelessly transmits it to an external device.

[0049] The first connector 102a, the second connector 102b, the third connector 103a, and the fourth connector 103b can be made from, for example, snap buttons (such as American snaps) or magnetic fasteners. The first wiring 104a and the second wiring 104b can be made from, for example, Ag / AgCl sheets, silver paste, copper foil, conductive fabric, etc.

[0050] As shown in Figure 7, the wearable device according to Embodiment 2 has a coupling shaft 105' as its central part, and each of the first base material 101'a and the second base material 101'b is rotatable on a plane parallel to the plane of each base material. The first sliding groove 106'a and the second sliding groove 106'b are slidable relative to the coupling shaft 105' within the range in which the grooves are formed. By sliding the first sliding groove 106'a and the second sliding groove 106'b relative to the coupling shaft 105', each of the first base material 101'a and the second base material 101'b can be rotated.

[0051] As described above, the first base material 101'a and the second base material 101'b can each rotate, allowing them to form a V-shape. Furthermore, since the third connector 103a and the fourth connector 103b rotate relative to each other at a constant distance, the measuring device 130 can be attached even when the first base material 101'a and the second base material 101'b are in a V-shape.

[0052] As described above, by using a V-shape, the bioelectrode attachment section 152 can be positioned between the worn underwear 151 and the human body, as explained using Figure 3, and the measuring device 130 can be positioned outside the underwear 151. Since the thick measuring device 130 is positioned outside the underwear 151, discomfort caused by tightness from the underwear 151 can be eliminated, and the wearable device can be worn without discomfort.

[0053] Furthermore, if the distance between the two bioelectrodes 120 falls below a certain level, the biosignal level may decrease, making diagnosis difficult. In contrast, the first substrate 101'a and the second substrate 101'b rotate relative to each other while maintaining a distance between the first connector 102a and the second connector 102b that does not fall below a certain level, thus suppressing a decrease in the signal level.

[0054] As described above, according to the embodiment of the present invention, the first substrate equipped with the first connector and the third connector and the second substrate equipped with the second connector and the fourth connector are made rotatable relative to each other, so that a wearable device can be attached without discomfort.

[0055] Some or all of the above embodiments may also be described as follows, but are not limited to the following:

[0056] [Note 1] A base composed of a sheet-like first substrate and a sheet-like second substrate rotatably connected to each other; a first connector formed on the back surface of the first substrate in the outer region of the base; a second connector formed on the back surface of the second substrate in the outer region of the base; a third connector formed on the surface of the first substrate in the inner region of the base; a fourth connector formed on the surface of the second substrate in the inner region of the base; a first wiring formed on the first substrate connecting the first connector and the third connector; and a second wiring formed on the second substrate connecting the second connector and the fourth connector. A wearable device comprising: a coupling shaft protruding from the inner region of the base toward the end of the first substrate toward the third connector; and a sliding groove formed in the inner region of the base toward the end of the second substrate toward the fourth connector, into which the coupling shaft is slidably inserted, wherein the first substrate and the second substrate are pivotally connected to each other at the location of the coupling shaft and the sliding groove, the third connector and the fourth connector are rotatable relative to each other at a certain distance, and the sliding groove is formed such that the first substrate and the second substrate are rotatable relative to each other at a certain distance.

[0057] [Note 2] A wearable device as described in Note 1, wherein the sliding grooves are formed on the first substrate and the second substrate so that they can rotate relative to each other while the distance between the first connector and the second connector does not fall below a certain level.

[0058] [Note 3] A wearable device according to Note 1 or 2, wherein the end surface of the second substrate facing the first substrate has an arc shape when viewed in plan from the direction normal to the plane of the second substrate, and the end surface of the first substrate facing the second substrate is provided with a guide that slides along the arc-shaped end surface of the second substrate.

[0059] [Note 4] A base composed of a sheet-like first substrate and a sheet-like second substrate rotatably connected to each other; a first connector formed on the back surface of the first substrate in the outer region of the base; a second connector formed on the back surface of the second substrate in the outer region of the base; a third connector formed on the surface of the first substrate in the inner region of the base; a fourth connector formed on the surface of the second substrate in the inner region of the base; a first wiring formed on the first substrate connecting the first connector and the third connector; a second wiring formed on the second substrate connecting the second connector and the fourth connector; and in the inner region of the base, on the side of the first substrate beyond the third connector, the A wearable device comprising: a first sliding groove formed in an arc shape centered on a connector; a second sliding groove formed in an arc shape centered on the fourth connector on the side of the second substrate that is further toward the end of the fourth connector in the inner region of the base; and a coupling shaft that pivotally connects the first substrate and the second substrate at the portions of the first sliding groove and the second sliding groove, wherein the first substrate and the second substrate are rotatable relative to each other with the third connector and the fourth connector at a constant distance apart, and the first substrate and the second substrate are rotatable relative to each other with the third connector and the fourth connector arranged in a straight line across the coupling shaft, the first sliding groove and the second sliding groove are formed in such a manner.

[0060] [Note 5] A wearable device as described in Note 4, wherein the first substrate and the second substrate are formed such that they can rotate relative to each other without the distance between the first connector and the second connector falling below a certain level.

[0061] [Appendix 6] A wearable device according to any one of Appendix 1 to 5, wherein the first substrate and the second substrate are made of a flexible material.

[0062] [Note 7] A wearable device as described in Note 6, wherein each of the first substrate and the second substrate has a sloped region that slopes gently from the inner region to the outer region.

[0063] [Note 8] A wearable device according to any one of Notes 1 to 7, wherein the first connector and the second connector are connected to bioelectrodes, and the third connector and the fourth connector are connected to measuring devices for measuring biosignals.

[0064] It should be noted that the present invention is not limited to the embodiments described above, and it is clear that many modifications and combinations can be implemented within the technical concept of the present invention by those with ordinary skill in the art.

[0065] 100, 100'...base, 100a...inner region, 100b...outer region, 101a, 101'a...first base material, 101b, 101'b...second base material, 102a..., 102b...first connector, 102b...second connector, 103a...third connector, 103b...fourth connector, 104a...first wiring, 104b...second wiring, 105...connecting shaft, 105'...connecting shaft, 106...sliding groove, 106' a...First sliding groove, 106'b...Second sliding groove, 107...End side surface, 108...Guide, 111a, 111b, 111'a, 111'b...Lower layer, 112a, 112b, 112'a, 112'b...Intermediate layer, 113a, 113b, 113'a, 113'b...Upper layer, 120...Bioelectrode, 121...Support, 122...Electrode, 123...Connector, 124...Adhesive substrate, 130...Measuring device.

Claims

1. A base comprising a sheet-like first base material and a sheet-like second base material rotatably connected to each other; a first connector formed on the back surface of the first base material in the outer region of the base; a second connector formed on the back surface of the second base material in the outer region of the base; a third connector formed on the surface of the first base material in the inner region of the base; a fourth connector formed on the surface of the second base material in the inner region of the base; a first wiring formed on the first base material connecting the first connector and the third connector; a second wiring formed on the second base material connecting the second connector and the fourth connector; a coupling shaft protruding from the end of the first base material toward the third connector in the inner region of the base; and a sliding groove formed on the end of the second base material toward the fourth connector in the inner region of the base, into which the coupling shaft is slidably inserted, wherein the first base material and the second base material are pivotally connected to each other at the location of the coupling shaft and the sliding groove, and the third connector and the fourth connector are rotatable relative to each other at a certain distance. A wearable device in which the sliding grooves are formed such that the first substrate and the second substrate, and the third connector and the fourth connector, can rotate relative to each other at a constant distance.

2. A wearable device according to claim 1, wherein the sliding grooves are formed on the first substrate and the second substrate so that they can rotate relative to each other while the distance between the first connector and the second connector does not fall below a certain level.

3. A wearable device according to claim 1, wherein the end surface of the second substrate facing the first substrate has an arc shape when viewed in plan from the direction normal to the plane of the second substrate, and the end surface of the first substrate facing the second substrate is provided with a guide that slides along the arc-shaped end surface of the second substrate.

4. A base comprising a sheet-like first substrate and a sheet-like second substrate rotatably connected to each other; a first connector formed on the back surface of the first substrate in the outer region of the base; a second connector formed on the back surface of the second substrate in the outer region of the base; a third connector formed on the surface of the first substrate in the inner region of the base; a fourth connector formed on the surface of the second substrate in the inner region of the base; a first wiring formed on the first substrate connecting the first connector and the third connector; a second wiring formed on the second substrate connecting the second connector and the fourth connector; a first sliding groove formed in an arc shape centered on the third connector on the end side of the first substrate in the inner region of the base; a second sliding groove formed in an arc shape centered on the fourth connector on the end side of the second substrate in the inner region of the base; and a coupling shaft pivotally connecting the first substrate and the second substrate at the portions of the first sliding groove and the second sliding groove. A wearable device in which the first substrate and the second substrate are rotatable relative to each other with the third connector and the fourth connector at a fixed distance apart, and the first substrate and the second substrate are rotatable relative to each other with the third connector and the fourth connector arranged in a straight line across the coupling shaft, the first and second sliding grooves being formed therein.

5. A wearable device according to claim 4, wherein the first substrate and the second substrate are formed such that they can rotate relative to each other without the distance between the first connector and the second connector falling below a certain level.

6. A wearable device according to any one of claims 1 to 5, wherein the first substrate and the second substrate are made of a flexible material.

7. A wearable device according to claim 6, wherein each of the first substrate and the second substrate has a sloped region that slopes gently from the inner region to the outer region.

8. A wearable device according to any one of claims 1 to 5, wherein the first connector and the second connector are connected to bioelectrodes, and the third connector and the fourth connector are connected to measuring devices for measuring biosignals.

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