Support with bistable spring and exercise aid comprising the same

Abstract

A support according to an embodiment includes a main body, a pair of main frames connected to the main body, a pair of straps respectively connected to the pair of main frames, and a bistable spring disposed inside each of the pair of straps and maintained in one of two stable states by a restoring force. The two stable states can include a first stable state in which the bistable spring has a shape extending linearly along a longitudinal direction and a second stable state in which the bistable spring has a shape bent once. A shape of the strap is determined according to a shape of the bistable spring.

Description

Technical Field

[0001] The following description relates to a support having a bistable spring and an exercise assisting device including the support. Background Art

[0002] Generally speaking, exercise assistive devices are devices or mechanisms that help patients who are unable to walk independently due to various illnesses, accidents, or other conditions perform exercises for rehabilitation therapy. With the recent acceleration of an aging society, more and more people are experiencing difficulty exercising or finding it difficult to perform normal exercises due to joint problems. Consequently, interest in exercise assistive devices is growing. Exercise assistive devices are worn on the user's body to help them develop the necessary muscle strength and guide them in walking for normal exercise.

[0003] Generally speaking, people with physical disabilities wear exercise assistive devices. Unfortunately, they may find it difficult to put on the assistive exercise devices. Therefore, there is a need for a technology that allows users with limited physical mobility to put on exercise assistive devices themselves without the help of others.

[0004] The foregoing description represents information acquired or possessed by the inventor during the process of developing the present disclosure and is not necessarily known in the art prior to filing this application. Summary of the Invention

[0005] Technical Solution

[0006] A support member according to an exemplary embodiment includes: a main body; a pair of main frames connected to the main body; a pair of straps connected to the pair of main frames; and a bistable spring disposed within each of the pair of straps and maintained in one of two stable states by a restoring force. The two stable states may include a first stable state and a second stable state, and the shape of the strap may be determined by the shape of the bistable spring, wherein in the first stable state, the bistable spring has a shape extending straight along a longitudinal direction, and in the second stable state, the bistable spring has a shape bent once.

[0007] When the bistable spring is in the first stable state, each of the pair of straps may maintain a shape extending forward from the main frame.

[0008] When the two bistable springs respectively disposed inside the pair of straps are in the second stable state, each strap may overlap with the other strap.

[0009] When the bistable spring is in the first stable state, the bistable spring may have a protruding shape in a direction perpendicular to the longitudinal direction, and a curvature of the protruding shape may decrease during a transition from the first stable state to the second stable state.

[0010] The position of the bistable spring may be fixed based on the longitudinal direction of the strap.

[0011] The band may include an accommodation space for accommodating the bistable spring, and a width of the accommodation space may be greater than a width of the band based on a direction perpendicular to a longitudinal direction of the band.

[0012] A width of the bistable spring in the second stable state may be greater than a width of the bistable spring in the first stable state, and may be smaller than a width of the accommodation space.

[0013] The support may further include a pad, wherein the pad is disposed inside the belt and is configured to overlap the bistable spring with respect to a direction perpendicular to a longitudinal direction of the belt.

[0014] The pad is detachable from the harness.

[0015] The support may further include a pair of auxiliary straps, wherein the pair of auxiliary straps are connected to any one of the pair of straps and are configured to be wrapped around the other strap.

[0016] The support member may further include an auxiliary bistable spring disposed inside each auxiliary strap.

[0017] The support may further include an inner frame, wherein the inner frame is disposed inside the belt and comprises a relatively harder material than a material of the belt.

[0018] The inner frame may include a first inner frame extending from the main frame and connected to the bistable spring, and a second inner frame extending from the bistable spring toward an end of the strap.

[0019] The bistable spring may be provided in plural numbers, and the bistable springs may be spaced apart from each other in a longitudinal direction of the belt.

[0020] A support member according to an exemplary embodiment includes: a main frame; a pair of straps connected to both ends of the main frame; and a bistable spring disposed within each strap and configured to maintain a stable state in one of two stable states through a restoring force. The two stable states may include a first stable state and a second stable state, and the shape of the strap may be determined by the shape of the bistable spring. In the first stable state, the bistable spring has a shape extending straight along a longitudinal direction, and in the second stable state, the bistable spring has a shape that is bent once.

[0021] An exercise assisting device according to an exemplary embodiment includes: a main body; a pair of main frames connected to the main body; a pair of straps respectively connected to the pair of main frames; a bistable spring provided inside each of the pair of straps and maintained in either of two stable states by a restoring force; an actuator provided in the main frames; and a drive frame configured to be rotatable by receiving power from the actuator.

[0022] The two stable states may include a first stable state and a second stable state, and the shape of the strap may be determined according to the shape of the bistable spring, wherein in the first stable state, the bistable spring has a shape extending straight along the longitudinal direction, and in the second stable state, the bistable spring has a shape bent once.

[0023] When the bistable spring is in the first stable state, each strap may maintain a shape extending forward from the main frame.

[0024] The exercise assisting device may further include a pad, wherein the pad is provided at an inner side of the belt and is configured to overlap the bistable spring with respect to a direction perpendicular to a longitudinal direction of the belt.

[0025] The exercise assisting device may further include an inner frame, wherein the inner frame is disposed inside the strap and includes a material that is relatively harder than a material of the strap. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a front view of an exercise assisting device according to an example embodiment.

[0027] Figure 2 is a side view of an exercise assisting device according to an example embodiment.

[0028] Figure 3 is a plan view illustrating a support member when a bistable spring is in a first stable state according to example embodiments.

[0029] Figure 4 is a plan view showing the support when the bistable spring is in the second stable state, according to an example embodiment.

[0030] Figure 5 is a perspective view showing the bistable spring in the first stable state.

[0031] Figure 6 is a perspective view showing the bistable spring in the second stable state.

[0032] Figure 7 is a graph schematically showing potential energy according to a displacement angle of the bistable spring.

[0033] Figure 8 is a cross-sectional view taken along line VIII-VIII of Figure 3

[0034] Figure 9 is a cross-sectional view taken along line IX-IX of Figure 4

[0035] Figure 10 is a cross-sectional view showing the main frame, the strap, and the bistable spring, according to an example embodiment.

[0036] Figure 11 is a cross-sectional view showing a view in which the second strap approaches the first strap, according to an example embodiment.

[0037] Figure 12 is a cross-sectional view showing a state in which a pair of straps is fixed by a fastening member.

[0038] Figure 13 and Figure 14 is a plan view showing the support, according to an example embodiment.

[0039] Figure 15 is a plan view schematically showing the support, according to an example embodiment.

[0040] Figure 16 and Figure 17 is a cross-sectional view showing the main frame, the strap, the bistable spring, and the inner frame, according to an example embodiment.

[0041] Figure 18 is a front view schematically showing a view in which the support is worn on a body, according to an example embodiment. DETAILED DESCRIPTION

[0042] The following structural or functional descriptions of examples are merely intended to be for the purpose of describing examples, and examples can be implemented in various forms. Here, examples should not be interpreted as being limited to the present disclosure, and it should be understood to include all changes, equivalents, and substitutions within the scope of the concept and technology of the present disclosure. ​​

[0043] Terms such as first, second, etc. can be used herein to describe various components. Each of these terms is not intended to define a particular essence, order or sequence of the corresponding component, but is used only to distinguish the corresponding component from other components. For example, a first component can be referred to as a second component, and similarly, a second component can also be referred to as a first component.

[0044] It should be noted that if it is described that one component is "connected", "coupled" or "joined" to another component, although the first component can be directly connected, coupled or joined to the second component, a third component can be "connected", "coupled" and "joined" between the first component and the second component.

[0045] The singular form is intended to include the plural form unless the context clearly indicates otherwise. It will be further understood that the terms "comprise / comprising" and / or "include / including" when used herein specify the presence of stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0046] The same name can be used to describe elements included in the above-described example embodiments and elements having a common function. Unless otherwise stated, the description of the example embodiments can be applied to the following example embodiments, and thus, repeated descriptions will be omitted for the sake of brevity.

[0047] Unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Terms such as those defined in a generally used dictionary should be interpreted as having a meaning consistent with its meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless expressly defined herein.

[0048] Hereinafter, examples will be described in detail with reference to the accompanying drawings. When the example embodiments are described with reference to the accompanying drawings, the same reference numerals denote the same constituent elements, and repeated descriptions related thereto will be omitted.

[0049] Figure 1 is a front view illustrating an exercise assisting apparatus according to an example embodiment, and Figure 2 is a side view illustrating an exercise assisting apparatus according to an example embodiment.

[0050] Referring to Figure 1 and Figure 2 The exercise assisting apparatus 100 can be worn by a user to assist the user's motion. The user can be a human, an animal, or a robot, but is not limited thereto. In addition, although Figure 1The case in which the exercise assistance device 100 assists the thigh exercise of the user is illustrated, but the exercise assistance device 100 can assist other parts of the upper body such as the hands, upper arms, and lower arms of the user or other parts of the lower body such as the feet and lower legs of the user (see FIG. 1B). Figure 18 That is, the exercise assistance device 100 can assist the movement of a part of the user's body. Hereinafter, the case in which the exercise assistance device 100 assists the movement of the thighs of a person is described as an example.

[0051] The exercise assistance device 100 can include a main body 10, a pair of main frames 20, a pair of belts 11, and an auxiliary belt 15 connected to any one of the pair of belts 11, an actuator 21, an engagement member 22, and a driving frame 23.

[0052] The main body 10 can accommodate a controller (not shown) for controlling the actuator 21 and a power source (not shown) for supplying power to the actuator 21 therein. For example, the main body 10 can be located on the back side of the user based on the state in which the exercise assistance device 100 is worn on the user's body.

[0053] The pair of main frames 20 can be connected to the main body 10. The main frame 20 can be fixed to the user's body. The main frame 20 can contact at least a portion of the outer surface of the user. The main frame 20 can have a shape that surrounds the outer surface of the user. The main frame 20 can be curved in a shape corresponding to the contact portion of the user. That is, the main frame 20 can include a curved surface that contacts the user. For example, the main frame 20 can be fixed to one side of the waist of the user.

[0054] The pair of belts 11 can be connected to the pair of main frames 20, respectively. The pair of belts 11 can maintain a shape extending forward (+x direction) before the user wears the exercise assistance device 100, and can not hinder the user from entering the inner side of the pair of main frames 20. On the other hand, in the case in which the user enters the inner side of the pair of main frames 20, the pair of belts 11 can be deformed and wrapped around the front of the user as illustrated. The main body 10, the pair of main frames 20, and the pair of belts 11 can be completely wrapped around the user.

[0055] The pair of auxiliary belts 15 and the pair of belts 11 can be fixed to each other with the pair of belts 11 overlapping each other. For example, one of the pair of belts 11 can be wrapped around the other belt together with the pair of auxiliary belts 15.

[0056] The actuator 21 can provide power to be transmitted to the coupling member 22. The actuator 21 may include a motor that generates power by receiving voltage or current from a power supply. For example, the actuator 21 may be in the transverse direction of the coupling member 22. In other words, the rotation axis of the actuator 21 and the rotation axis of the coupling member 22 may be separated from each other. In this case, compared to the case where the actuator 21 and the coupling member 22 share a rotation axis, the case where the rotation axis of the actuator 21 and the rotation axis of the coupling member 22 are separated can reduce the height protruding from the user. In addition, unlike the illustrated figure, the actuator 21 may also be separated from the coupling member 22. In this case, a power transmission module for transmitting power from the actuator 21 to the coupling member 22 may be provided. The power transmission module may be a rotating body such as a gear, or may be a longitudinal member such as a wire, cable, rope, rubber band, spring, belt or chain. However, in example embodiments, the position of the actuator 21 and the power transmission structure may be unrestricted.

[0057] The joint member 22 can receive power from the actuator 21 to assist the movement of the user's joint. The joint member 22 can be located at a position corresponding to the user's joint. The joint member 22 can be located on one side of the main frame 20. One side of the joint member 22 can be connected to the actuator 21, and the other side of the joint member 22 can be connected to the drive frame 23. The joint member 22 can be rotated by the power transmitted from the actuator 21. An encoder for measuring the rotation angle of the joint member 22 can be provided on one side of the joint member 22.

[0058] The driving frame 23 may partially assist the user's movement. The driving frame 23 may be rotated by the rotational force of the coupling member 22. The driving frame 23 may include a supporting frame 231, an action member 232, and a supporting member 233.

[0059] The support frame 231 can transmit an auxiliary force for assisting the movement of a part of the user's body. Here, the auxiliary force can be understood as a force acting in the same direction as the direction of movement of the part of the user's body. In other words, the auxiliary force can be understood as a force that excludes the force in the direction intersecting the direction of movement of the part of the user's body from the force acting on the part of the user's body. One end of the support frame 231 can be connected to the coupling member 22 and intersect therewith. The other end of the support frame 231 can be connected to the support member 233 to transmit the auxiliary force to the part of the user's body. For example, the support frame 231 can push or pull the user's thigh. The support frame 231 can extend along the longitudinal direction of the user's thigh. The support frame 231 can be bent to wrap around at least a portion of the circumference of the user's thigh.

[0060] The motion member 232 can apply an assistive force to a portion of the user's body. The motion member 232 can be located between the other end of the support frame 231 and the support member 233. For example, the motion member 232 can be located on one side of the user's thigh to push or pull the thigh. The motion member 232 can be located on the front side of the user's thigh. The motion member 232 can be located along the circumference of the user's thigh. The motion member 232 can extend to both sides around the other end of the support frame 231. The motion member 232 can include a curved surface that corresponds to the user's thigh.

[0061] The support member 233 may be connected to one side of the action member 232. For example, the support member 233 may surround at least a portion of the user's thigh so that the support member 233 can prevent the user's thigh from being separated from the support frame 231.

[0062] Figure 3 is a plan view illustrating a support member when a bistable spring is in a first stable state according to an example embodiment, and Figure 4 is a plan view illustrating a support member when a bistable spring is in a second stable state according to example embodiments.

[0063] Reference Figure 3 and Figure 4 The exercise assisting device 100 may include a support member A worn on a user's body to support a portion of the user's body. Here, the support member A may include a main body 10, a pair of main frames 20a and 20b, a pair of straps 111 and 112, a bistable spring 12, a pad 14, and a pair of auxiliary straps 151 and 152.

[0064] The pair of main frames 20a and 20b may include a first main frame 20a connected to the right side of the body 10 and a second main frame 20b connected to the left side of the body 10. The pair of main frames 20a and 20b may partially surround a portion of a user's body.

[0065] The pair of straps 111 and 112 may include a first strap 111 connected to the first main frame 20 a and a second strap 112 connected to the second main frame 20 b .

[0066] The first strap 111 and the second strap 112 may each have a Figure 3 The "first shape" shown or Figure 4 For example, when the first strap 111 or the second strap 112 temporarily fails to maintain the "first shape" or the "second shape" due to an external force, the first strap 111 or the second strap 112 can be restored to the "first shape" or the "second shape" by the restoring force of the bistable spring 12.

[0067] When the user is not inside the pair of main frames 20a and 20b, each of the straps 111 and 112 can maintain its "first shape" and extend forward from the pair of main frames 20a and 20b. On the other hand, when the user wears the exercise assisting device 100, that is, when the user enters the pair of main frames 20a and 20b, each of the straps 111 and 112 can change from the "first shape" to the "second shape" and wrap around the front of the user. For example, the user can apply external force to the pair of straps 111 and 112 with their hands to change the pair of straps 111 and 112 from the "first shape" to the "second shape."

[0068] The bistable spring 12 may be disposed within each of the straps 111 and 112 and may be maintained in one of two stable states by a restoring force. The two stable states may include a "first stable state" in which the bistable spring 12 extends straight in the longitudinal direction and a "second stable state" in which the bistable spring 12 is bent once.

[0069] The shape of the strap may be determined according to the shape of the bistable spring 12. For example, when the bistable spring 12 is in the "first stable state", the strap may maintain a "first shape", and when the bistable spring 12 is in the "second stable state", the strap may maintain a "second shape".

[0070] When the bistable spring 12 disposed inside the pair of straps 111 and 112 is in the "first stable state", the pair of straps 111 and 112 may maintain a shape extending forward (in the +x direction) from the pair of main frames 20a and 20b, respectively.

[0071] In a case where the bistable spring 12 provided inside the pair of straps 111 and 112 is in the “second stable state”, the pair of straps 111 and 112 may overlap each other in the +x direction.

[0072] The pad 14 may be provided on the inner side of the strap and overlap the bistable spring 12 in a direction perpendicular to the longitudinal direction of the strap. For example, the pad 14 provided on the inner side (-y direction) of the first strap 111 may overlap the bistable spring 12 provided on the inner side of the first strap 111 in a direction (y-axis direction) perpendicular to the longitudinal direction (x-axis) of the strap 111.

[0073] When the pair of straps 111 and 112 are in the "second shape," the pad 14 can adjust the angle formed by the pair of straps 111 and 112. The pad 14 can act as resistance when the pair of straps 111 and 112 transition from the "first shape" to the "second shape." As the thickness of the pad 14 increases, the angle formed by the pair of straps 111 and 112 in the "second shape" can increase. The pad 14 is detachable from the pair of straps 111 and 112. By appropriately adjusting the angle of the straps in the "second shape" using the thickness and material of the pad 14, the exercise aid can be adjusted to fit the user's body size.

[0074] In a state where the pair of auxiliary straps 151 and 152 are connected to the first strap 111 and the first strap 111 overlaps the second strap 112, the pair of auxiliary straps 151 and 152 can be fixed by wrapping around the second strap 112. For example, an auxiliary bistable spring (not shown) may be provided inside the pair of auxiliary straps 151 and 152.

[0075] Figure 5 is a perspective view showing a bistable spring in a first stable state, Figure 6 is a perspective view showing a bistable spring in a second stable state, Figure 7 Schematic diagram of the potential energy of a bistable spring according to its displacement angle.

[0076] Reference Figures 5 to 7 When the bistable spring 12 is in the "first stable state," the bistable spring 12 may have a protruding shape in a direction (x-axis direction) perpendicular to the longitudinal direction (y-axis direction). The bistable spring 12 may deform such that the curvature of the protruding shape decreases during the transition from the "first stable state" to the "second stable state." That is, when the bistable spring 12 is in the "second stable state," the bistable spring 12 may have a relatively flat shape except for the curved portion.

[0077] The state where the bistable spring 12 is at 0 degrees relative to the y-axis and the state where the bistable spring is at 90 degrees relative to the y-axis may correspond to points with minimum potential energy and are respectively shown as a "first stable state" and a "second stable state." However, the angles constituting the stable states are not limited to 0 degrees or 90 degrees and may vary depending on the material or shape of the bistable spring.

[0078] Figure 8 It is along Figure 3 A cross-sectional view taken along line VIII-VIII of Figure 9 It is along Figure 4 a cross-sectional view taken along line IX-IX of FIG. 1 , and Figure 10 is a cross-sectional view illustrating a main frame, a strap, and a bistable spring according to an example embodiment.

[0079] Reference Figures 8 to 10 The strap 11 may include an accommodation space s for accommodating the bistable spring 12. The position of the bistable spring 12 may be fixed relative to the longitudinal direction of the strap 11. For example, the width of the accommodation space s based on the longitudinal direction of the strap 11 may be the same as the width of the bistable spring 12.

[0080] On the other hand, the width of the accommodation space s can be greater than the width of the belt 11 in a direction perpendicular to the longitudinal direction of the belt 11. According to this shape, the state can be freely switched between the "first stable state" and the "second stable state" within the bistable spring 12.

[0081] In the first stable state, the width W1 of the bistable spring 12 can be smaller than the width D1 of the accommodation space s. Furthermore, in the second stable state, the width W2 of the bistable spring 12 can be larger than the width W1 of the bistable spring 12 and smaller than the width D1 of the accommodation space s. With this structure, the bistable spring 12 can switch states without interfering with the inner wall of the band 11 that forms the accommodation space s.

[0082] The length L of the bistable spring 12 may be equal to the length D of the accommodation space s. The bistable spring 12 may be fixed inside the strap 11 .

[0083] Figure 11 is a cross-sectional view showing a state in which the second band approaches the first band, and Figure 12 It is a cross-sectional view showing a state where a pair of straps are fixed by a fastening member.

[0084] Reference Figure 11 and Figure 12 Each of the auxiliary straps 151 and 152 may be provided with an auxiliary bistable spring 16. When no external force is applied to the pair of auxiliary straps 151 and 152 by the auxiliary bistable spring 16, the pair of auxiliary straps 151 and 152 may maintain a straight line shape. Since the pair of auxiliary straps 151 and 152 maintain a straight line shape, the user can bring the second strap 112 closer to the first strap 111 without opening the pair of auxiliary straps 151 and 152.

[0085] Each of the auxiliary straps 151 and 152 may be provided with a magnet 17 for fixing. Based on the state in which the auxiliary straps 151 and 152 overlap each other, the magnet 17 provided in the first auxiliary strap 151 and the magnet 17 provided in the second auxiliary strap 152 may face each other with opposite polarities.

[0086] Figure 13 and Figure 14 is a plan view illustrating a support member according to example embodiments.

[0087] Reference Figure 13 and Figure 14 The exercise assisting device 200 may include a main body 10 , a main frame 20 , a strap 11 ′, a bistable spring 12 ′, a pad 14 ′, and auxiliary straps 151 and 152 .

[0088] The bistable springs 12' and pads 14' can be provided in a plurality and spaced apart from each other in the longitudinal direction of the strap 11'. The plurality of bistable springs 12' can be used to adjust the stable shape that the strap 11' can achieve. For example, for a user with a large torso, the strap 11' may need to bend multiple times. In this case, the number of bends of the strap 11' can be adjusted by using multiple bistable springs 12'.

[0089] Figure 15 is a plan view schematically illustrating a support member according to an example embodiment, and Figure 16 and Figure 17 is a cross-sectional view illustrating a main frame, a strap, a bistable spring, and an inner frame according to an example embodiment.

[0090] Reference Figures 15 to 17 The support member A may include a main frame 20', a pair of straps 11 respectively connected to both ends of the main frame 20', a bistable spring 12 arranged inside the strap 11, and an inner frame 18 connected to each of the two ends of the bistable spring 12.

[0091] With reference Figures 1 to 17 Unlike the main frame described above, the main frame 20' may not be connected to the main body. The main frame 20' may have, for example, a U-shape. The support A may surround a portion of the user's body.

[0092] The inner frame 18 may be formed of a relatively stronger material than the strap 11. The inner frame 18 may help the strap 11 maintain its shape. For example, the inner frame 18 may include a first inner frame 181 extending from one end of the main frame 20' and connected to one end of the bistable spring 12, and a second inner frame 182 connected to the other end of the bistable spring 12 and extending toward one end of the strap 11.

[0093] Since the inner frame 18 is covered by the band 11, the inner frame 18 may not be exposed to the outside. The inner frame 18 may fix the position of the bistable spring 12 disposed inside the accommodation space s.

[0094] Figure 18 is a front view schematically illustrating a state in which a support member according to an example embodiment is worn on a body.

[0095] Reference Figure 18, the support A can be worn at various locations on the body of the user U. For example, the support A can be worn on the user's upper arm to assist the user's elbow joint movement together with the actuator, the engagement member, and the drive frame (not shown). In another example, the support A can be worn on the user's thigh to assist the user's knee joint movement.

[0096] As described above, although the examples have been described with reference to limited figures, those skilled in the art may apply various technical modifications and variations based on this. For example, if the described techniques are performed in a different order and / or if the components in the described systems, architectures, devices, or circuits are combined in a different manner and / or replaced or supplemented with other components or their equivalents, suitable results may be achieved.

[0097] Therefore, the scope of the disclosure is defined not by the detailed description, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are to be construed as being included in the disclosure.

Claims

1. A support member, comprising: main body; a pair of main frames connected to the main body; a pair of straps, respectively connected to the pair of main frames; as well as a bistable spring disposed inside each of the pair of straps and maintained in one of two stable states by a restoring force, wherein The two stable states include a first stable state and a second stable state corresponding to a displacement angle of the bistable spring having minimum potential energy, wherein in the first stable state, the bistable spring has a shape extending straight along the longitudinal direction, and in the second stable state, the bistable spring has a shape bent once, and The shape of the strap is determined by the shape of the bistable spring.

2. The support member according to claim 1, wherein When the bistable spring is in the first stable state, each of the pair of straps maintains a shape extending forward from the main frame.

3. The support member according to claim 1, wherein When the two bistable springs respectively disposed inside the pair of straps are in the second stable state, each strap in the pair of straps overlaps with the other strap.

4. The support member according to claim 1, wherein When the bistable spring is in the first stable state, the bistable spring has a protruding shape in a direction perpendicular to the longitudinal direction, and a curvature of the protruding shape decreases during a transition from the first stable state to the second stable state.

5. The support member according to claim 1, wherein The position of the bistable spring is fixed based on the longitudinal direction of the strap.

6. The support member according to claim 1, wherein The strap comprises a receiving space for receiving the bistable spring, and Based on a direction perpendicular to the longitudinal direction of the belt, the width of the accommodating space is greater than the width of the belt.

7. The support member according to claim 6, wherein: The width of the bistable spring in the second stable state is greater than the width of the bistable spring in the first stable state, and is smaller than the width of the accommodating space.

8. The support member according to claim 1, further comprising: A pad is provided on the inner side of the belt and is configured to overlap the bistable spring with respect to a direction perpendicular to the longitudinal direction of the belt.

9. The support member according to claim 8, wherein: The pad is detachable from the harness.

10. The support member according to claim 1, further comprising: A pair of auxiliary straps are connected to either one of the pair of straps and are configured to be wrapped around the other strap.

11. The support member according to claim 10, further comprising: An auxiliary bistable spring is provided inside each auxiliary strap.

12. The support member according to claim 1, further comprising: An inner frame is disposed inside the strap and comprises a material that is relatively harder than that of the strap.

13. The support member according to claim 12, wherein: The inner frame includes: a first inner frame extending from the main frame and connected to the bistable spring; and A second inner frame extends from the bistable spring toward an end of the strap.

14. The support member according to claim 1, wherein A plurality of bistable springs are provided, and the bistable springs are spaced apart from each other in the longitudinal direction of the belt.

15. An exercise assisting device comprising: The support member according to claim 1; an actuator disposed in the main frame; as well as The driving frame is configured to be rotatable by receiving power from the actuator.

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