Muscle strength assisting device

Abstract

The present invention relates to a muscle power assisting device. According to one aspect of the present invention, the muscle power assisting device includes a multi-link section including one or more links, a distribution adjustment section coupled to one side of the multi-link section and configured to be able to self-rotate with respect to a center, and an elastic force providing section coupled to the other side of the multi-link section and configured to provide a force to the multi-link section according to an elastic force, wherein when the one side of the multi-link section moves in an orbit with respect to the center due to the self-rotation of the distribution adjustment section, the other side of the multi-link section moves, and thus the force applied to the multi-link section by the elastic force providing section changes.

Description

TECHNICAL FIELD

[0001] The present invention relates to a muscle power assisting device, and more particularly, to a muscle power assisting device capable of providing an assisting force while a person works. BACKGROUND

[0002] As one of devices for assisting the muscle power of a person while the person works, an upper arm muscle power assisting device, which is installed on the arm of the person to assist the muscle power, can be exemplified. Such an upper arm muscle power assisting device is installed with a mechanism that forms a torque for assisting a load caused by the weight of the arm of the person and the weight of an object supported by the arm of the person. For example, the upper arm muscle power assisting device has a torque of different sizes according to the rotation angle of the device, which has a functional relationship in which the torque size is determined by the rotation angle. Such a functional relationship is referred to as a torque profile.

[0003] On the other hand, the torque size required for the muscle power assisting device varies according to the type of work performed by the person. For example, even if the rotation angle of the upper arm muscle power assisting device is the same, the degree of load applied to the person varies according to the type of work performed by the person. Therefore, when the type of work performed by the person changes, the torque profile required for the upper arm muscle power assisting device also needs to change.

[0004] However, according to the related art, in order to change the torque profile, it is necessary to replace components (e.g., a spring) inside the muscle power assisting device or adjust the physical properties (e.g., the tension of the spring) of the internal components. Therefore, according to the related art, there is a problem that it is cumbersome to change the torque profile of the muscle power assisting device. SUMMARY

[0005] (1) Technical Problem to be Solved

[0006] Therefore, the problem to be solved by the present invention is to provide a muscle power assisting device capable of easily changing a torque profile.

[0007] (2) Technical Solution

[0008] According to one aspect of the present invention for achieving the above object, there is provided a muscle power assisting device including a multi-link portion including one or more links, a distribution adjusting portion combined with one side of the multi-link portion and disposed so that a part thereof is capable of self-rotation with respect to a center, and an elastic force providing portion combined with the other side of the multi-link portion and providing a force according to an elastic force to the multi-link portion, the one side of the multi-link portion being capable of revolution motion with respect to the center when the part of the distribution adjusting portion self-rotates, the distribution adjusting portion selectively allowing or restricting the motion of the one side of the multi-link portion.

[0009] The multi-link part can include a first link having one side coupled to the distribution adjustment part, and the one side of the first link can be moved with respect to the center when the distribution adjustment part rotates, thereby changing the force applied to the multi-link part by the elastic force providing part.

[0010] The multi-link part can further include a second link having one side coupled to the elastic force providing part, and the one side of the second link can be moved when the distribution adjustment part rotates, thereby changing the force applied to the multi-link part by the elastic force providing part.

[0011] The multi-link part can further include a third link having a first region rotatably coupled to the other side of the first link and a second region rotatably coupled to the other side of the second link.

[0012] The multi-link part can further include a main body part accommodating the multi-link part, the distribution adjustment part, and the elastic force providing part, and the multi-link part can further include a fourth link having one side fixed to the main body part and the other side rotatably coupled to the first region.

[0013] The multi-link part can further include a fifth link having one side fixed to the main body part and the other side rotatably coupled to the third region of the third link.

[0014] The muscle strength assisting device can further include an end link part having one side rotatably coupled to the main body part and the other side coupled to the elastic force providing part.

[0015] The elastic force providing part can include a plurality of springs having one side respectively coupled to the other side of the second link and the other side respectively coupled to the other side of the end link part.

[0016] The distribution adjustment part can include a first gear having one side coupled to the first link and disposed to be able to rotate with respect to the center.

[0017] The distribution adjustment part can further include a second gear disposed to be engaged with the first gear.

[0018] The distribution adjustment part can further include a third gear fixedly coupled to the first gear and disposed to be able to rotate with respect to the center.

[0019] The first gear can have a size greater than that of the third gear.

[0020] The distribution adjustment part can further include a stopper limiting rotation of the third gear by interference with a sawtooth provided on the outside of the third gear.

[0021] In the edge of the third gear, a recessed portion having a shape recessed toward the center direction can be provided in a region where the first gear and the first link join each other.

[0022] The distribution adjustment portion can include a first pulley having one side coupled to the first link and being disposed to be able to self-rotate with respect to the center, a second pulley disposed to be spaced apart from the first pulley, and a belt disposed to surround the outer sides of the first pulley and the second pulley.

[0023] The distribution adjustment portion can further include a worm disposed to mesh with the first gear.

[0024] The present application provides a muscle strength assisting device including a multi-link portion including one or more links, a distribution adjustment portion coupled to one side of the multi-link portion and being disposed to be able to self-rotate with respect to a center in a portion thereof, an elastic force providing portion coupled to the other side of the multi-link portion and providing a force according to an elastic force to the multi-link portion, and a power providing portion providing a power to the distribution adjustment portion, when a portion of the distribution adjustment portion self-rotates by the power providing portion, the one side of the multi-link portion is able to revolve with respect to the center, and the distribution adjustment portion selectively allows or restricts the movement of the one side of the multi-link portion.

[0025] The multi-link portion can further include a main body portion accommodating the multi-link portion, the distribution adjustment portion, and the elastic force providing portion, a support portion disposed at one side of the main body portion, and a pressure sensor disposed at an inner side surface of the support portion and sensing a pressure.

[0026] The muscle strength assisting device can further include a control portion controlling the driving of the power providing portion according to the magnitude of the pressure applied to the pressure sensor.

[0027] The first link can have a shape bent toward the fourth link.

[0028] (Three) Advantageous Effects

[0029] According to the present application, a muscle strength assisting device capable of easily changing torque distribution can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a schematic view schematically showing the structure of a muscle strength assisting device according to the present application.

[0031] Figure 2 FIG. 2 is a view showing the internal structure of a muscle strength assisting device according to a first embodiment of the present application.

[0032] Figure 3 is a diagram showing various drive examples of rotation between a first body and a second body in a muscle assist device according to a first embodiment of the present application.

[0033] Figures 4 to 7 is a diagram showing various drive examples of adjusting distribution of a rotation force with a distribution adjusting section in a muscle assist device according to the first embodiment of the present application.

[0034] Figure 8 is a graph showing examples of various rotation angle-rotation force function relationships that can be formed by a muscle assist device according to the present application.

[0035] Figure 9 is a diagram showing a distribution adjusting section in a muscle assist device according to a second embodiment of the present application in close-up.

[0036] Figure 10 is a diagram showing a distribution adjusting section in a muscle assist device according to a third embodiment of the present application in close-up.

[0037] Figure 11 is a diagram showing another example of a muscle assist device according to the present application.

[0038] Figure 12 is a diagram showing yet another example of a muscle assist device according to the present application.

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 10: muscle assist device 100: multi-link section

[0041] 110: first link 120: second link

[0042] 130: third link 140: fourth link

[0043] 150: fifth link 200: distribution adjusting section

[0044] 210: first gear 220: second gear

[0045] 230: third gear 232: recessed portion

[0046] 240: stopper 250: first pulley

[0047] 260: second pulley 270: belt

[0048] 280: worm 300: elastic force providing section

[0049] 310: spring 400: body section

[0050] 410: first body 420: second body

[0051] 500: end link portion 600: power providing portion

[0052] 700: support portion 710: pressure sensor

[0053] C: center Z1: first region

[0054] Z2: second region Z3: third region DETAILED DESCRIPTION

[0055] Hereinafter, a muscle strength assisting device according to the present application will be described with reference to the accompanying drawings.

[0056] Muscle strength assisting device

[0057] Figure 1 is a schematic view schematically showing a structure of a muscle strength assisting device according to the present application, Figure 2 is a view showing an internal structure of a muscle strength assisting device according to a first embodiment of the present application.

[0058] As Figure 1 shown, a muscle strength assisting device 10 according to the present application can include a multi-link portion 100 having one or more links. In more detail, the multi-link portion 100 can include a plurality of links. More preferably, the multi-link portion 100 can have a linkage structure in which the plurality of links are rotatably connected to each other. For example, the plurality of links provided in the multi-link portion 100 can be rotatably connected to each other on the same plane.

[0059] Further, the muscle strength assisting device 10 can include a profile adjusting portion 200 which is combined with one side of the multi-link portion 100 and is disposed so as to be able to rotate with respect to a center C. In more detail, when a part of the profile adjusting portion 200 rotates with respect to the center C, one side of the multi-link portion 100 can be fixedly combined to the part of the profile adjusting portion 200 so that the one side of the multi-link portion 100 can revolve with respect to the center C. The role and structure of the profile adjusting portion 200 will be described later.

[0060] Meanwhile, the muscle strength assisting device 10 can further include an elastic force providing portion 300 which is combined with the other side of the multi-link portion 100 and provides a force according to an elastic force to the multi-link portion 100. In more detail, the elastic force providing portion 300 can include a spring 310. More preferably, the elastic force providing portion 300 can include a plurality of springs 310. Figure 2 A state in which the elastic force providing portion 300 is composed of three springs 310 is shown.

[0061] On the other hand, with reference to Figure 2, the myostrength assisting device 10 according to the present application can further include a main body part 400 accommodating the multi-link part 100, the profile adjusting part 200, and the elastic force providing part 300. In more detail, the main body part 400 can include a first main body 410 accommodating the multi-link part 100, the profile adjusting part 200, and the elastic force providing part 300, and a second main body 420 rotatably coupled to the first main body 410. For example, the first main body 410 and the second main body 420 can be pivotally coupled to each other to be relatively rotatable with respect to the center C.

[0062] For example, the myostrength assisting device 10 according to the present application can be installed on the arm and the shoulder of the user, at this time, the myostrength assisting device 10 can be installed in a manner that the center C faces the joint region where the arm and the shoulder intersect, and the first main body 410 can be installed on the arm and the second main body 420 can be installed on the shoulder.

[0063] Therefore, the myostrength assisting device 10 according to the present application can assist the user's required muscle strength according to the rotation angle of the arm. That is, when the first main body 410 is pivoted around the center C with respect to the second main body 420 by rotating the arm, the relative position between the other side of the multi-link part 100 and the elastic force providing part 300 is changed according to the structure of the multi-link part 100 in which a plurality of links are linked. Therefore, since the elastic force provided to the multi-link part 100 by the elastic force providing part 300 connected to the other side of the multi-link part 100 also changes, a different size of rotational force can be provided to the user from the center C according to the rotation angle of the arm of the user.

[0064] Therefore, the rotational force provided to the user by the myostrength assisting device 10 according to the present application can be understood as a functional relationship according to the rotation angle between the first main body 410 and the second main body 420. In addition, the myostrength assisting device according to the present application can have various types of functional relationships of the rotational force according to the rotation angle between the first main body 410 and the second main body 420 by a simple operation without the cumbersome work of replacing separate parts, etc. Therefore, optimized rotational forces can be provided to users who want to use the myostrength assisting device, respectively.

[0065] To achieve the above object, the profile adjusting part 200 of the myostrength assisting device 10 according to the present application can selectively allow or restrict the revolution motion of the one side of the multi-link part 100. Hereinafter, detailed configurations of the multi-link part 100 and the profile adjusting part 200 of the myostrength assisting device 10 according to the present application for achieving the above object are described.

[0066] As Figure 1 and Figure 2As shown, the multi-link portion 100 can include a first link 110 having one side coupled to the distribution adjustment portion 200, and a second link 120 having one side coupled to the elastic force providing portion 300.

[0067] Meanwhile, the multi-link portion 100 further includes a third link 130 having a first region Z1 rotatably coupled to the other side of the first link 110 and a second region Z2 rotatably coupled to the other side of the second link 120. That is, the first to third links 110, 120, 130 can be relatively moved with respect to the main body portion 400 within the main body portion 400.

[0068] Referring to Figure 1 and Figure 2 , the multi-link portion 100 can further include a fourth link 140 having one side fixed to the main body portion 400 and the other side rotatably coupled to the first region Z1 of the third link 130. In more detail, the one side of the fourth link 140 can be fixedly coupled to the inner side of the first main body 410. Accordingly, in the first region Z1, the first link 110, the third link 130, and the fourth link 140 can be coupled together. Meanwhile, as shown, the first link 110 can have a shape bent toward the fourth link 140, but the specific shape of the first link 110 is not limited to the shape shown. Figure 2 Figure 2

[0069] Further, the multi-link portion 100 further includes a fifth link 150 having one side fixed to the main body portion 400 and the other side rotatably coupled to the third region Z3 of the third link 130. In more detail, the one side of the fifth link 150 can be fixedly coupled to the inner side of the first main body 410. Meanwhile, as described above, the third link 130 can include the first to third regions Z1, Z2, Z3. In more detail, as shown, the third link 130 can have a shape having the first to third regions Z1, Z2, Z3 at corner portions thereof and an empty region in the middle. Figure 2

[0070] On the other hand, referring to Figure 2 , according to the first embodiment of the present application, the distribution adjustment portion 200 can include a first gear 210 having one side coupled to the first link 110 and rotatably coupled to the center C, and a second gear 220 disposed to be engaged with the first gear 210. Accordingly, when the second gear 220 rotates, the first gear 210 engaged with the second gear 220 can rotate around the center C.

[0071] ​​​Further, the distribution adjustment part 200 can further include a third gear 230 fixedly coupled to the first gear 210 and disposed so as to be able to self-rotate with respect to the center C. That is, according to the first embodiment of the present application, since the first gear 210 and the third gear 230 are fixed to each other, they can self-rotate integrally with respect to the center C. In more detail, the outer diameter size of the first gear 210 can be greater than the outer diameter size of the third gear 230.

[0072] Referring to Figure 2 , the distribution adjustment part 200 can further include a stopper 240 limiting the rotation of the third gear 230 by interfering with the sawteeth provided on the outer side of the third gear 230.

[0073] Based on the above, the operation method of the muscle assistance device 10 according to the first embodiment of the present application will be described below.

[0074] Figure 3 are diagrams illustrating various driving examples of the rotation between the first body and the second body in the muscle assistance device according to the first embodiment of the present application.

[0075] As Figure 3 shown, even when the first body 410 relatively rotates with respect to the second body 420 according to the motion of the user wearing the muscle assistance device 10, the region of the first link 110 coupled to the first gear 210 is fixed with respect to the first body 410. This can be because the stopper 240 provided in the distribution adjustment part interferes with the sawteeth of the third gear 230, thereby limiting the rotation of the third gear 230 and the first gear 210 fixedly coupled to the third gear 230. On the other hand, even though one side of the first link 110 is fixed to the first gear 210, the other links within the multi-link part 100 relatively move with respect to the first body 410 according to the rotation of the first body 410 with respect to the second body 420. Therefore, the elastic force provided by the elastic force providing part 300 to the second link 120 or the multi-link part 100 can also change, as a result, the rotational force provided by the muscle assistance device 10 to the user can also change according to the rotation angle of the first body 410 with respect to the second body 420. For example, Figure 3 the muscle assistance device 10 shown on the left side shows a state when the user wearing the muscle assistance device lifts the arm upward, Figure 3 the muscle assistance device 10 shown in the center shows a state when the user lifts the arm in the horizontal direction, Figure 3The muscle strength assist device 10 shown on the right illustrates the state when the user lowers their arm downwards. Referring to the above, in the muscle strength assist device 10 according to the present invention, the rotational force generated by the muscle strength assist device when the user raises their arm upwards, the rotational force generated by the muscle strength assist device when the user raises their arm horizontally, and the rotational force generated by the muscle strength assist device when the user lowers their arm downwards may be different from each other. In particular, as will be described later, according to the present invention, even if the angle at which the user raises their arm is the same, the rotational force generated by the muscle strength assist device may differ due to the operation of the distribution adjustment unit.

[0076] Figures 4 to 7 The figure illustrates various driving examples of adjusting the distribution of rotational force using the distribution adjustment unit in the muscle strength assist device according to the first embodiment of the present invention.

[0077] Reference Figures 4 to 7 When the user manipulates the stop 240 to release the interference between the stop 240 and the third gear 230 and then rotates the second gear 220, the first gear 210, which is fixedly engaged with the second gear 220, rotates relative to the center C. At this time, since the first gear 210 is fixedly engaged with one side of the first connecting rod 110, one side of the first connecting rod 110 also revolves relative to the center C. Because one side of the first gear 210 revolves relative to the center C, the relative position between the second connecting rod 120 and the elastic supply part 300 changes according to the connection structure between the connecting rods within the multi-link part 100. Therefore, as... Figures 4 to 7 As shown, even if the rotation angle between the first body 410 and the second body 420 remains unchanged, the rotational force applied to the user at the center C by the muscle-strengthening assistive device may change. Therefore, according to the present invention, an optimized rotational force can be provided to a user who wants to use the muscle-strengthening assistive device.

[0078] Figure 8 It is a graph showing examples of various rotation angle-rotation force function relationships that can be formed by the muscle strength assist device according to the invention.

[0079] Figure 8 The x-axis represents the rotational angle between the first body 410 and the second body 420, and the y-axis represents the magnitude of the rotational force provided by the muscle-strengthening assistive device to the user. For example... Figure 8 As shown, when the relationship between the rotation angle and rotational force set in the initial position does not meet the user's requirements, the first gear 210 can be rotated by the second gear 220, allowing for horizontal translation along the x-axis. Figure 8 The curve graph.

[0080] For example, the rotational force provided to the user can be adjusted to the maximum within a rotation angle range of 20 to 30 degrees (see reference).Figure 8 The rotation of the first gear 210 of the myostimulatory device (refer to the graph shown in FIG. 1) can adjust the rotational force of the myostimulatory device so that the rotational force provided to the user becomes maximum in the range of the rotational angle of -10 degrees to 0 degrees (refer to the graph shown in FIG. 1). Figure 8 The rotation of the first gear 210 of the myostimulatory device (refer to the graph shown in FIG. 1) can adjust the rotational force of the myostimulatory device so that the rotational force provided to the user becomes maximum in the range of the rotational angle of -10 degrees to 0 degrees (refer to the graph shown in FIG. 1).

[0081] As described above, according to the present application, the revolution of the first gear 210, i.e., the distribution adjustment portion 200, and the revolution of one side of the first link 110 with respect to the center C, and thus the movement of one side of the second link 120, can change the force applied to the multi-link portion 100 by the elastic force providing portion 300. In particular, according to the present application, even in the state where the rotational angle between the first body 410 and the second body 420 is maintained as it is, one side of the first link 110 can revolve with respect to the center C, and thus even if the rotational angle of the user's arm is the same, the relationship between the rotational angle and the rotational force can be adjusted so that the rotational force provided to the user by the myostimulatory device can be different from each other.

[0082] Referring again to Figure 2 , the myostimulatory device 10 according to the present application can further include an end link portion 500 rotatably coupled to one side of the body portion 400 and coupled to the other side of the elastic force providing portion 300, i.e., the spring 310. At this time, one side of a plurality of springs 310 provided in the elastic force providing portion 300 can be respectively coupled to the other side of the second link 120.

[0083] In addition, as shown in Figure 2 , according to the present application, a recessed portion 232 having a shape recessed toward the center C can be provided in the edge of the third gear 230 in the area where the first gear 210 and the first link 110 are coupled to each other. The recessed portion 232 can be configured to prevent the third gear 230 from interfering in the coupling area between the first gear 210 and the first link 110.

[0084] On the other hand, a portion of the stopper 240 can be moved forward or backward toward the third gear 230 to interfere with or be spaced apart from the sawteeth provided in the edge of the third gear 230, so that whether to interfere with the third gear 230 can be controlled.

[0085] Figure 9 is a view that enlargedly shows the distribution adjustment portion in the myostimulatory device according to the second embodiment of the present application. Hereinafter, the myostimulatory device according to the second embodiment of the present application will be described mainly with differences from the first embodiment of the present application.

[0086] As shown in Figure 9As shown, according to a second embodiment of the present invention, the distribution adjustment unit 200 may include: a first pulley 250, one side of which is coupled to a first connecting rod 110 and is configured to rotate relative to the center C; a second pulley 260, which is configured to be spaced apart from the first pulley 250; and a belt 270, which is configured to surround the outer sides of the first pulley 250 and the second pulley 260.

[0087] According to a second embodiment of the present invention, the user can rotate the second pulley 260 to move the belt 270 to rotate the first pulley 250, thereby adjusting the relationship between the rotation angle and the rotational force. The contents of other components including the recessed portion 232 and the working principle of the muscle-strengthening device are replaced by the description of the first embodiment of the present invention.

[0088] Figure 10 This is an enlarged view showing the distribution adjustment section in the muscle strength assist device according to a third embodiment of the present invention.

[0089] like Figure 10 As shown, according to a third embodiment of the present invention, the distribution adjustment unit 200 may include a first gear 210 and a worm 280, the worm 280 being configured to mesh with the first gear 210.

[0090] According to a third embodiment of the present invention, the user can rotate the first gear 210 by rotating the worm 280, thus adjusting the relationship between the rotation angle and the rotational force. The contents of other components including the recess 232 and the working principle of the muscle-strengthening device are replaced by the contents of the first embodiment of the present invention.

[0091] Figure 11 This is a diagram illustrating another example of a muscle strength assist device according to the present invention.

[0092] The adjustment of the rotational force of the muscle-strengthening assistive device according to the present invention can be performed manually, but can also be performed automatically using a separate power source. For example, the second gear 220 according to the first embodiment of the present invention (see...) Figure 2 ), according to the second embodiment of the present invention, the second pulley 260 (refer to) Figure 9 ) and the worm gear 280 according to the third embodiment of the present invention (see reference) Figure 10 The drive can be performed manually by the user, or it can be performed automatically using a separate power source.

[0093] More specifically, refer to Figure 11 The muscle strength assist device 10 according to the present invention may further include a distribution adjustment unit 200 (see reference 200). Figure 1 A power supply unit 600 that provides power to a second gear 220 (see reference 220) disposed in a distribution adjustment unit. More specifically, the power supply unit 600 may further include a power supply unit 600 that provides power to a second gear 220 disposed in a distribution adjustment unit. Figure 2), a second pulley 260 (refer to Figure 9 ) or a worm 280 (refer to Figure 10 ) provides a power providing part 600 that provides a rotational force. For example, the power providing part 600 can be an electric motor, but various types of power sources can be applied in the power providing part. According to another example of the present application, when a part of the distribution adjusting part 200 (refer to Figure 1 , etc.) self-rotates by the power providing part 600, one side of the multi-link part 100 ( Figure 1 , etc.) can be disposed to be able to revolve with respect to the center.

[0094] Figure 12 is a view showing still another example of the muscle power assisting device according to the present application.

[0095] As shown in Figure 12 , the muscle power assisting device 10 according to the present application can further include a support part 700 disposed at one side of the main body part 400. The support part 700 can be a configuration that supports the user's arm.

[0096] Further, the muscle power assisting device 10 can further include a pressure sensor 710 disposed at the inner side surface of the support part 700 and sensing a pressure. As described above, since the support part 700 can be a configuration that supports the user's arm, the pressure sensor 710 can measure the pressure applied by the user's arm. Accordingly, the pressure sensor 710 can measure the load applied to the user's arm in real time during work.

[0097] Meanwhile, the muscle power assisting device 10 can further include a control part (not shown) that controls the driving of the power providing part according to the magnitude of the pressure applied to the pressure sensor 710. Accordingly, according to the present application, the pressure sensor 710 can transmit information related thereto to the control part after measuring the load applied to the user's arm in real time, and the control part can control the driving of the power providing part 600 based on the information about the load to adjust the rotational force required by the user in real time.

[0098] Although the present application has been described above with limited embodiments and drawings, the present application is not limited thereto, and of course, those skilled in the art to which the present application pertains can make various embodiments within the technical idea of the present application and the equivalent scope of the appended claims.

Claims

1. A muscle strength assisting device comprising: a multi-linkage section including one or more links; a distribution adjustment section coupled to one side of the multi-linkage section and configured to be partially self-rotatable with respect to a center; and a spring force providing section coupled to the other side of the multi-linkage section and configured to provide a force to the multi-linkage section according to a spring force, when the distribution adjustment section is self-rotated, the one side of the multi-linkage section is orbitally moved with respect to the center, the distribution adjustment section selectively allows or restricts the movement of the one side of the multi-linkage section, wherein the multi-linkage section includes a first link, one side of the first link is coupled to the distribution adjustment section, when the distribution adjustment section is self-rotated, the one side of the first link is orbitally moved with respect to the center, so that the force applied to the multi-linkage section by the spring force providing section is changed, the distribution adjustment section includes: a first gear coupled to the first link on one side and configured to be self-rotatable with respect to the center; a second gear configured to be meshed with the first gear; a third gear fixedly coupled to the first gear and configured to be self-rotatable with respect to the center; and a stopper configured to restrict the rotation of the third gear by interfering with a sawtooth provided on the outer side of the third gear. 2.The muscle strength assisting device according to claim 1, wherein, the multi-linkage section further includes a second link, one side of the second link is coupled to the spring force providing section, when the distribution adjustment section is self-rotated, the one side of the second link is moved, so that the force applied to the multi-linkage section by the spring force providing section is changed. 3.The muscle strength assisting device according to claim 2, wherein, the multi-linkage section further includes: a third link, a first region of which is rotatably coupled to the other side of the first link, and a second region of which is rotatably coupled to the other side of the second link. 4.The muscle strength assisting device according to claim 3, wherein, the multi-linkage section further includes a main body section in which the multi-linkage section, the distribution adjustment section, and the spring force providing section are accommodated, the multi-linkage section further includes a fourth link, one side of which is fixed to the main body section, and the other side of which is rotatably coupled to the first region. 5.The muscle strength assisting device according to claim 4, wherein, the multi-linkage section further includes a fifth link, one side of which is fixed to the main body section, and the other side of which is rotatably coupled to a third region of the third link. 6.The muscle strength assisting device according to claim 5, further comprising: an end link section, one side of which is rotatably coupled to the main body section, and the other side of which is coupled to the spring force providing section. 7.The muscle strength assisting device according to claim 6, wherein, the spring force providing section includes a plurality of springs, one side of the plurality of springs is respectively coupled to the other side of the second link, the other side of the plurality of springs is respectively coupled to the other side of the end link section. 8.The muscle strength assisting device according to claim 1, wherein, The first gear is larger in size than the third gear.

9. The muscle power assisting device according to claim 1, wherein In an edge of the third gear, a recessed portion having a shape recessed toward the center is provided in a region where the first gear and the first link are combined with each other.

10. The muscle power assisting device according to claim 1, wherein The distribution adjusting portion includes: a first pulley combined to one side of the first link and disposed so as to be able to self-rotate with respect to the center; a second pulley disposed so as to be spaced apart from the first pulley; and a belt disposed so as to surround the outer sides of the first pulley and the second pulley.

11. The muscle power assisting device according to claim 1, wherein The distribution adjusting portion further includes a worm disposed so as to mesh with the first gear.

12. A muscle power assisting device comprising: a multi-link portion including one or more links; a distribution adjusting portion combined to one side of the multi-link portion and disposed so that a portion thereof is able to self-rotate with respect to a center; an elastic force providing portion combined to the other side of the multi-link portion and providing a force to the multi-link portion according to an elastic force; and a power providing portion providing power to the distribution adjusting portion, when a portion of the distribution adjusting portion self-rotates by the power providing portion, the one side of the multi-link portion performs an orbiting motion with respect to the center, the distribution adjusting portion selectively allows or restricts a motion of the one side of the multi-link portion, wherein the multi-link portion includes a first link, one side of the first link being combined to the distribution adjusting portion, when the distribution adjusting portion self-rotates, the one side of the first link performs an orbiting motion with respect to the center, whereby the force applied by the elastic force providing portion to the multi-link portion changes, the distribution adjusting portion includes: a first gear combined to one side of the first link and disposed so as to be able to self-rotate with respect to the center; a second gear disposed so as to mesh with the first gear; and a third gear fixedly combined to the first gear and disposed so as to be able to self-rotate with respect to the center, in an edge of the third gear, a recessed portion having a shape recessed toward the center is provided in a region where the first gear and the first link are combined with each other.

13. The muscle power assisting device according to claim 12, wherein the multi-link portion further includes: a main body portion accommodating the multi-link portion, the distribution adjusting portion, and the elastic force providing portion; a support portion disposed on one side of the main body portion; and a pressure sensor disposed on an inner side surface of the support portion and sensing a pressure.

14. The muscle power assisting device according to claim 13, further comprising: a control portion controlling driving of the power providing portion according to the magnitude of the pressure applied to the pressure sensor.

15. The muscle power assisting device according to claim 4, wherein the first link has a shape bent toward the fourth link.

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