Muscle force assistance device and method

Abstract

A muscle force assistance device and method are described. The disclosed device comprises: a first device worn on a portion of a user's body; a second device worn on another portion of the user's body; and a constant load generating part including a constant load spring device that is provided on the first device and applies a constant load to the second device, the method comprises the steps that the first device worn on a part of the body of the user applies a constant load to the second device worn on another part of the body of the user, a constant load generating portion provided on the first device applies a constant load to the user in response to a change in a relative distance between the first device and the second device or a change in a body shape according to a body movement of the user.

Description

Technical Field

[0001] This disclosure relates to a muscle strength assist device and method thereof, and more specifically, to a device and method for assisting the erector spinae muscles of the upper body. Background Technology

[0002] All jobs that utilize muscle strength require workers to withstand various forms of physical load. Any form of work or activity that exceeds a worker's muscle strength limits can potentially cause physical injury.

[0003] Wearable assistive devices that help the body generate assistive force to help perform tasks that are difficult to do with normal muscle strength.

[0004] Passive suits have a structure that only supports body movement, while active suits have an amplified artificial force that supports body movement relative to it. Active suits are not only more complex in structure, but also more expensive.

[0005] Existing passive wearable assistive suits also have complex structures, making it difficult to avoid interference with surrounding structures, and also difficult to modify the support force and maintain a constant assist force according to the work being done.

[0006] Therefore, it would be beneficial to develop a muscle assist device that is easy to wear, minimizes interference with surrounding environmental factors while being worn, and maintains a constant and defined assisting force. Summary of the Invention

[0007] Technical issues

[0008] This disclosure discloses a muscle strength assist device and method that is easy to wear and minimizes interference from external environmental factors.

[0009] This disclosure discloses a muscle strength assist device and method that can adjust the assist force in a multi-stage manner and maintain a constant assist force.

[0010] This disclosure discloses a musculoskeletal assistive device and method for assisting the movement of upper body muscles through assistive force to protect upper body muscles, including the erector spinae muscles, from excessive tension and excessive curvature of the spine.

[0011] Technical solution

[0012] The muscle strength assist device according to one or more embodiments of the present disclosure includes:

[0013] The first device is worn on a part of the user's body;

[0014] A second device, worn on another part of the user's body; and

[0015] A constant load generating unit includes a constant load spring device, which is disposed on the first device and applies a constant load to the second device.

[0016] According to one or more embodiments,

[0017] The constant load generating unit may include multiple constant load spring devices for applying a multi-stage constant load, and

[0018] Each of the plurality of constant load spring devices may have a coupling head at its spring end, which is selectively coupled to the second device.

[0019] According to one or more embodiments,

[0020] The plurality of constant load spring devices may include a central spring device and two peripheral spring devices disposed on both sides of the central spring device.

[0021] According to one or more embodiments,

[0022] The two coupling heads located at the spring ends of the two peripheral spring devices are connected to each other via a bridge connector.

[0023] According to one or more embodiments,

[0024] The bridge may have a channel through which the coupling head of the central spring is placed or passes.

[0025] According to one or more embodiments,

[0026] A seat for fixing the coupling head of the central spring may be formed in the channel.

[0027] According to one or more embodiments,

[0028] The first device may include a head mounting portion comprising a coupling bracket, wherein, when the coupling head is detachably fixed to the first device, the coupling head is inserted into a space relative to the frame of the first device.

[0029] The coupling bracket may be equipped with a locking device, which uses an actuating pin to fix the coupling head set on each spring.

[0030] According to one or more embodiments,

[0031] The locking device may be a plunger-type locking device, which has a cylinder fixed on the coupling bracket, an actuating pin that reciprocates relative to the cylinder, and a handle connected to the actuating pin.

[0032] According to one or more embodiments,

[0033] The first device can be installed on the user's waist, and the second device can be installed on the user's upper body.

[0034] The muscle strength assist method according to this disclosure includes

[0035] The first device, worn on one part of the user's body, applies a constant load to the second device, worn on the other part of the user's body.

[0036] The constant load generating unit disposed on the first device applies a constant load to the user in response to changes in the relative distance between the first device and the second device or changes in the user's body shape due to the user's body movement.

[0037] According to one or more embodiments of the method,

[0038] The constant load generating unit can generate the constant load in a multi-stage manner using multiple springs derived from multiple constant load spring devices, and

[0039] The multiple springs can transmit the constant load to the second device through the head mounting portion provided on the second device.

[0040] According to one or more embodiments,

[0041] The constant load generating unit can apply a constant load, which is adjusted in a multi-stage manner by multiple constant load spring devices for applying multi-stage loads, to the user's body through the second device.

[0042] According to one or more embodiments, the constant load spring device can generate the constant load by at least one of a central spring device and two peripheral spring devices respectively disposed on both sides of the central spring device.

[0043] According to one or more embodiments of the method,

[0044] The first device can apply the constant load to the user's upper body, and

[0045] The second device can fix the constant load generating part that generates the constant load to the user's waist. Attached Figure Description

[0046] Figure 1 This is a schematic perspective view of a muscle strength assist device according to one embodiment.

[0047] Figure 2 To observe from the rear Figure 1 A schematic perspective view of the muscle strength assist device of the illustrated embodiment.

[0048] Figure 3 The detailed structure of the constant load generating section applied to a muscle strength assist device according to one embodiment is shown.

[0049] Figure 4 For the purpose of excerpting Figure 3 A perspective view of the constant load generating section of the muscle strength assist device shown.

[0050] Figure 5 The structure of a coupling head with a spring according to another embodiment is shown.

[0051] Figure 6 This is a schematic partial cross-sectional view showing the state of the coupling head engaged with the head mounting portion according to one embodiment.

[0052] Figure 7 A short-threaded indexing plunger is shown in one embodiment that can be used as a locking device for a coupling head.

[0053] Figure 8 A muscle-strengthening device is shown that applies a locking device according to another embodiment.

[0054] Figure 9 To show in more detail Figure 8 An excerpt perspective view of a portion of the locking device shown.

[0055] Figure 10 Shown in Figure 8 and Figure 9 In the embodiment shown, the coupling head is fixed in the head mounting portion in the coupling space between the frame and the coupling bracket.

[0056] Figure 11 The diagram illustrates the relationship between the actuating pin of a locking device according to another embodiment and the elastic sheet that resiliently biases the actuating pin.

[0057] Figure 12 The image shows the state of wearing the muscle-strengthening assistive device according to the present disclosure as described above. Detailed Implementation

[0058] In the following, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, embodiments of the present invention can be modified in many different ways, and the scope of the present invention should not be construed as limited to the embodiments described below. Preferably, embodiments of the present invention are provided to more fully illustrate the concept of the invention to those skilled in the art. The same symbols denote the same elements. Furthermore, the various elements and regions in the figures are shown schematically. Therefore, the present invention is not limited to the relative dimensions or spacing depicted in the drawings.

[0059] Although terms such as first, second, etc., may be used to describe various components, the components are not limited by these terms. These terms are used only to distinguish one component from another. For example, without departing from the scope of the claims, a first component may be referred to as a second component, and vice versa.

[0060] The terminology used in this application is for describing specific embodiments only and is not intended to limit the concept of the invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. In this application, it should be understood that expressions such as "comprising" or "having" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, numbers, operations, components, parts, or combinations thereof.

[0061] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that terms commonly used and defined in dictionaries shall be interpreted as having meaning consistent with their meaning in the technical context to which they pertain and shall not be interpreted as having overly formal meanings unless expressly defined herein.

[0062] Where feasible in the embodiments, the specific process sequence can be performed in a different order than described. For example, the two processes described in the sequence can be performed substantially simultaneously, or they can be performed in the reverse order.

[0063] The muscle strength assist device according to one or more embodiments will be described below.

[0064] Figure 1 This is a schematic perspective view of a muscle strength assist device according to one embodiment.

[0065] Reference Figure 1 The muscle strength assist device 100 according to this disclosure includes a first device 110, which is worn as a suit on one side of the user's body, such as the waist; a second device 120, which is worn on the upper part of the user's body; and a constant load generating unit 130, which connects the first device 110 and the second device 120 and is fixed to the first device 110 to apply a constant load to the second device 120. In the embodiments described below, the constant load generating unit 130 is shown to include three constant load spring devices 131 (…). Figure 3 This is described based on the above; however, according to another embodiment, the number of constant load spring devices may be increased or decreased depending on the design.

[0066] The first device 110 has a belt-like shape that is worn around the waist, and includes a strap 111 that wraps around the user's waist and a buckle 112 for fastening the strap 111 to fit the waist and prevent loosening. Figure 1 The first device shown can be modified and altered in various ways, and the scope of this disclosure is not limited to these specific forms.

[0067] The second device 120 is a part worn on the user's upper body and includes an upper frame 121 having two branches 121a and 121b connected to each other at the back and a shoulder strap 122 for securing it to the user's upper body.

[0068] The second device 120 is shown schematically and, similar to the first device 110, can be modified and altered in various forms; however, this does not limit the scope of the present disclosure.

[0069] The constant load generating unit 130 can adjust the load in a multi-stage manner and may have multiple constant load springs, which will be described in detail later.

[0070] This constant load generating part 130 has a coupling head 131c, which extends from multiple constant load springs and is movable by a certain stroke.

[0071] The second device 120 is provided with a head mounting portion 140 in which the coupling head 131c is detachably fixed.

[0072] Figure 2 To observe from the rear Figure 1 A schematic perspective view of the muscle strength assist device 100 of the illustrated embodiment.

[0073] Reference Figure 2 The muscle strength assist device 100 according to this disclosure has a constant load generating part 130 and a head part 140 on its back.

[0074] The constant load generating part 130 is disposed on the rear side of the strap 111 in the first device 110, and the head mounting part 140 is disposed on the upper frame 121 of the second device 120.

[0075] The first device 110 is in the form of a buckle-type belt worn around the waist, and has a strap 111 that wraps around the user's waist and a buckle 112 for tightening and securing the strap 111 to the waist to prevent loosening. Figure 1 The first device 110 shown can be modified and altered in various forms, and the scope of this disclosure is not limited to these specific forms.

[0076] The second device 120 is worn on the user's upper body and has an upper frame 121 connected to the back. According to one embodiment, the upper frame 121 may be V-shaped, having a first branch 121a and a second branch 121b, and shoulder straps 122 as described above are attached to each branch. Figure 1 and Figure 2 In this work, the second device 120 is shown schematically, and like the first device 110, it can be modified and changed in various forms; however, this does not limit the scope of the present disclosure.

[0077] As described above, the constant load generating unit 130 includes a plurality of constant load spring devices to adjust the load in a multi-stage manner, i.e., in this embodiment, the load can be adjusted in a two-stage manner. As described above, the constant load generating unit 130 has a coupling head 131c, which can be connected to the plurality of constant load spring devices 131 (… Figure 3 Move a certain distance.

[0078] The second device 120 is provided with a head mounting portion 140 in which the coupling head 131c is detachably fixed.

[0079] The coupling bracket 141 of the head mounting portion 140 is provided with a locking device 142 corresponding to the number of constant load springs described later. This device has a reciprocating actuating pin 142a, which is fixedly inserted into the coupling bracket 141, i.e., the coupling space 140c between the coupling bracket 141 and the upper frame 121. Figure 6 The coupling head 131c in )

[0080] The constant load spring device can generate an extension or retraction stroke of its inner spring when the user bends over, flexes, or straightens their upper body. At this time, the spring generates a certain load, thereby assisting the user's muscle strength, especially when extending. In addition, when straightening the upper body, such as when lifting objects, a certain load is applied in the direction of spring retraction to assist the user's movement in addition to the user's actual muscle strength.

[0081] Figure 3 The detailed structure of the constant load generating unit 130 is shown. Figure 3 The diagram schematically illustrates the state in which the spring protective cover 135 and the coupling bracket 141 are removed, in which, according to an exemplary embodiment, three constant load spring devices 131 are arranged side by side in the left-right direction. Here, to aid in understanding the structure, the outermost springs 131b on both sides extend from the constant load spring devices 131 (leading out), while the middle spring 131b of the three springs is retracted as much as possible and located closest to the constant load generating part 130.

[0082] like Figure 3 As shown, the constant load generating unit 130 has a structure in which three constant load spring devices 131 are arranged side by side in the left-right direction. This constant load generating unit 130 is provided with a shaft 132 that rotatably supports a drum 131a on which the constant load spring devices 131 are wound with the springs 131b, a support bracket 133 supporting the shaft 132, and a spring protective cover 135. Figure 1 and Figure 2 The constant load spring device 131 includes a baffle 134, which, while limiting the retraction distance of each spring 131b of the constant load spring device 131, also engages the coupling head 131c of the spring tip in an unloaded state. The baffle 134 is provided with slits 134a through which the springs 131b pass, the number of which corresponds to the number of constant load spring devices 131.

[0083] exist Figure 3 In this structure, two coupling heads 131c, located at the tips of the outer peripheral springs 131b, are interconnected by a bridge 131d to form a common coupling head structure. The middle region of the bridge 131d is designed to allow the springs 131b to move independently. To this end, the middle region of the bridge 131d forms a lower-bottomed channel 131e through which the central spring 131b and its coupling heads 131c pass or are positioned.

[0084] Figure 4 This is an excerpted perspective view of the constant load generating unit 130. (See image below.) Figure 4 As shown, three springs 131b are connected to the top of the housing formed by the support bracket 133, the upper and lower baffles 134 thereon, and the spring protective cover 135. Two of the outer springs 131b are connected to two outer coupling heads 131c connected via a bridge 131d, while the middle spring 131b has an independent coupling head 131c. In another embodiment, the lower bottom channel 131e of the middle region of the bridge 131d provides a seat with a bottom shape similar to the middle coupling head 131c, and an auxiliary pinhole 131f is provided at the bottom of this seat, facing the pinhole 131h of the middle coupling head 131c. The auxiliary pinhole 131f is the portion into which the end portion of the central actuating pin 142a enters, ensuring a more secure fixation of the middle coupling head 131c.

[0085] exist Figure 4 For convenience, the diagram shows the two outer springs 131b being pulled upwards while the middle spring 131b is left free. Figure 4 In some embodiments, a constant load can be applied in three stages by using two outer springs, using only one middle spring, or using both outer springs and the middle spring together.

[0086] Figure 5 The diagram shows a structure in which the coupling heads 131c of all three springs 131b are independently configured, according to another embodiment. This configuration allows the springs to be individually coupled to the head mounting portion 140, so that, as needed, one spring assembly, two spring assemblies, or all three spring assemblies can be connected to the second device 120, thereby providing a three-stage constant load.

[0087] Figure 6 This is a schematic partial cross-sectional view showing the state in which the coupling head 131c is engaged with the head mounting portion 140.

[0088] The coupling head 131c can be inserted into the coupling bracket 141, that is, into the coupling space 140c between the coupling bracket 141 and the upper frame 121, and is fixed by the actuating pin 142a of the locking device 142 inserted into its own pinhole 131h.

[0089] The locking device 142 has a fixed cylindrical body 142c with a threaded portion, which is fixed to the coupling bracket 141, and the actuating pin 142a is configured to reciprocate relative to the cylindrical body 142c of the locking device 142. The state in which the cylindrical body 142c is threadedly engaged with the coupling bracket 141 is fixed by a locking nut 142d. Furthermore, the handle 142b is integrally engaged with the outer end of the actuating pin 142a.

[0090] According to another embodiment, the actuating pin 142a can be elastically biased in the direction of the pinhole 131h. Therefore, a structure for such elastic biasing can be provided in the locking device 142. Thus, when the coupling head 131c is inserted into the coupling space 140c, pulling the handle 142b backward causes the actuating pin 142a to retract. After the coupling head 131c is fully inserted, releasing the actuating pin 142a causes the actuating pin 142a to be inserted into the pinhole 131h by elastic biasing force, locking the coupling head 131c in the head mounting portion 140.

[0091] exist Figure 6 In the diagram, the locking device 142 is shown in outline to help understand its basic structure.

[0092] Figure 7 A sample of a short-threaded indexing plunger that can be used as a locking device 142 for coupling head 131c in this invention is shown.

[0093] Reference Figure 7In this embodiment, the indexing plunger used as the locking device 142 includes an actuating pin 142a inserted into the pinhole 131h, a cylinder 142c having a threaded portion threaded to the coupling bracket 141, a locking nut 142d for fixing the cylinder 142c of the locking device 142 to the state of being threaded to the coupling bracket 141, and a handle 142b integrally connected to the actuating pin 142a.

[0094] Figure 8 A muscle-strengthening device 100 is shown that applies a locking device 142 according to another embodiment.

[0095] Reference Figure 8 According to the present disclosure, the muscle strength assist device 100 includes a first device 110 worn on one side of the user's body, such as the waist, a second device 120 worn on the upper part of the user's body, and a constant load generating part 130 connected to the first device 110 and the second device 120 and fixed to the first device 110 to apply a constant load to the second device 120.

[0096] The first device 110 has a belt-like shape worn around the waist, and includes a strap 111 that wraps around the user's waist and a buckle 112 for fastening the strap 111 to fit the waist and prevent loosening. The second device 120 is a part worn on the user's upper body and includes an upper frame 121 having two branches 121a and 121b that connect to each other at the back, and a shoulder strap 122 for securing it to the user's upper body.

[0097] The constant load generating unit 130 can adjust the load in a multi-stage manner and has a coupling head 131c that extends from multiple constant load springs and can move a certain distance.

[0098] The second device 120 is provided with a head mounting portion 140 in which the coupling head 131c is detachably fixed.

[0099] According to another embodiment, a locking device 142 is disposed on the coupling bracket 141 of the head mounting portion 140.

[0100] The locking device 142 includes a reciprocating actuating pin 142a, which is fixedly inserted into the coupling head 131c in the coupling space 140c between the coupling bracket 141 and the upper frame 121, an elastic sheet 143 that elastically biases the actuating pin 142a, and a fixing bolt 144 that fixes the elastic sheet 143 to the coupling bracket 141.

[0101] Figure 9An excerpted perspective view of the locking device 142 portion is shown in greater detail, with the coupling bracket 141 to which the locking device 142 is fixed shown in dashed lines so that the coupling head 131c inside can be seen.

[0102] Figure 10 The diagram shows the state in which the actuating pin 142a of the locking device 142 is inserted into the pinhole 131h of the coupling heads 131c and 131d in the coupling space 140c between the upper frame 121 and the coupling bracket 141, thereby fixing the coupling heads 131c and 131d to the head mounting portion 140.

[0103] Figure 11 The diagram illustrates the relationship between the actuating pin 142a, the elastic sheet 143 for elastically biasing the actuating pin 142a, and the coupling heads 131c and 131d into which the actuating pin 142a is inserted.

[0104] like Figure 11 As shown, the actuating pin 142e, which is inserted into the pinhole 131h of the coupling head 131c and 131d, is fixed to one side surface of one end of the elastic sheet 143, and the other end of the elastic sheet is formed with a screw hole 143h for inserting a fixing bolt 144.

[0105] Here, the tip of the actuating pin 142e is provided with an inclined cross section, which is used to allow the tips of the coupling heads 131c and 131d to rise when the coupling heads 131c and 131d are inserted into the coupling space 140c.

[0106] The actuating pin 142e, which is inserted into the pinhole 131h via the elastic piece 143 as described above, is disassembled by pulling the elastic piece 143 backward. Therefore, at this time, the coupling head 131c can be separated from the head mounting portion 140.

[0107] Figure 12 The image shows the state of wearing the muscle strength assist device 100 according to the present disclosure as described above.

[0108] Figure 12 The muscle strength assist device 100 shown uses a plunger-type locking device 142, which uses an actuating pin 142e. Even when the locking device 142 with the elastic spring described above is used, the same constant load muscle strength assist is generated.

[0109] like Figure 12 As shown, the first device is worn at the waist, while the second device is secured to the upper body by a shoulder strap 122 that is attached to the back of the upper body and worn on the shoulder.

[0110] In the above state, when user 1 bends his upper body, as his back bends, spring 131b is pulled and extended. At this time, spring 131b, which is locked in the constant load generating part 130 of the head mounting part 140, provides a constant load to user 1's upper body. When the upper body straightens again, spring 131b retracts under the constant load and provides a constant load to the upper body, which is superimposed on the muscle force of the user who straightens his upper body.

[0111] As described above, the constant load is determined by the number of springs 131b used, and therefore, the constant load can be adjusted in a multi-stage manner according to the user's selection.

[0112] According to the present disclosure, a muscle-strengthening method based on the aforementioned device includes applying a constant load to a second device worn on another part of the user's body via a first device worn on one part of the user's body, wherein a constant load generating section disposed on the first device applies a constant load to the user in response to changes in the relative distance between the first and second devices or changes in body shape due to movement of the user's body.

[0113] Here, the constant load generating unit can generate the constant load in a multi-stage manner by means of multiple springs drawn from multiple constant load spring devices, and the multiple springs can transmit the constant load to the second device through the head mounting part provided on the second device.

[0114] According to one or more embodiments, the constant load generating unit applies a constant load, which is adjusted in a multi-stage manner by a plurality of constant load spring devices for applying multi-stage loads, to the user's body via the second device.

[0115] According to one or more embodiments, the constant load spring device can generate the constant load by selecting at least one of a central spring device and two peripheral spring devices respectively disposed on both sides of the central spring device.

[0116] According to one or more embodiments, the first device applies the constant load to the user's upper body, and the second device fixes a constant load generating part that generates the constant load to the user's waist.

[0117] According to the present invention, when assisting a user's muscle strength, a certain load is used to assist muscle strength, thereby avoiding inconvenience or accidents to the user due to sudden changes in load. In particular, by generating multi-stage muscle strength assist force, the load can be adjusted according to the user's needs, thereby achieving a wider range of applications.

[0118] Although various embodiments of the present invention have been described in detail above, those skilled in the art will understand that various modifications and variations can be made thereto without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, modifications to future embodiments of the present invention will not exceed the technical scope of the invention. Claims (as amended under Article 19 of the Treaty) 1. A muscle strength assist device, characterized in that it comprises: The first device is worn on a part of the user's body; A second device, worn on another part of the user's body; and A constant load generating unit includes multiple constant load spring devices, which are disposed on the first device and apply a constant load to the second device, and have springs connected to the second device. Each of the plurality of constant load spring devices has a coupling head at its spring end, which is connected to the second device. 2. The muscle strength assist device according to claim 1, characterized in that, The constant load generating unit applies a multi-stage constant load to the second device, and The spring end of each of the plurality of constant load spring devices is selectively coupled to the second device. 3. The muscle strength assist device according to claim 2, wherein, The plurality of constant load spring devices include a central spring device and two peripheral spring devices disposed on both sides of the central spring device. 4. The muscle strength assist device according to claim 3, wherein, The two coupling heads located at the spring ends of the two peripheral spring devices are connected to each other via a bridge connector. 5. The muscle strength assist device according to claim 4, wherein, The bridge has a channel through which the coupling head of the central spring is placed or passes. 6. The muscle strength assist device according to claim 5, wherein, A seat for fixing the coupling head of the central spring is formed in the channel. 7. The muscle strength assist device according to claim 1, wherein, The first device is provided with a head mounting portion including a coupling bracket, the coupling bracket providing space for the coupling head to be inserted relative to the frame of the first device when the coupling head is detachably fixed to the first device. The coupling bracket is equipped with a locking device, which uses an actuating pin to fix the coupling head set on each spring. 8. The muscle strength assist device according to claim 7, wherein, The locking device is a plunger-type locking device, which has a cylinder fixed on the coupling bracket, an actuating pin that reciprocates relative to the cylinder, and a handle connected to the actuating pin. 9. The muscle strength assist device according to claim 7, wherein, The locking device is a plunger-type locking device including an elastic plate, which elastically biases a reciprocating moving pin to detachably fix the coupling head by means of the pin. 10. The muscle strength assist device according to claim 9, wherein, The first device is installed on the user's waist, and the second device is installed on the user's upper body. 11. A muscle strength assistance method that utilizes a muscle strength assistance device to assist a user's muscle strength, wherein, The muscle strength assist device includes: The first device is worn on a part of the user's body; A second device, worn on another part of the user's body; and A constant load generating unit includes a constant load spring device, which is disposed on the first device and applies a constant load to the second device, and has a spring connected to the second device. Each of the plurality of constant load spring devices has a coupling head at its spring end, which is connected to the second device. The muscle strength assist method includes: The first device, worn on one part of the user's body, applies a constant load to the second device, worn on the other part of the user's body. The constant load generating unit, which is installed on the first device, applies a constant load to the user using the plurality of constant load spring devices in response to changes in the relative distance between the first device and the second device or changes in the user's body shape due to the user's body movement. 12. The muscle strength assist method according to claim 11, wherein, The spring end of each of the plurality of constant load spring devices is selectively coupled to the second device, and the constant load generating unit generates the constant load in a multi-stage manner through a plurality of springs derived from the plurality of constant load spring devices. The plurality of springs transmit the constant load to the second device through a head mounting portion disposed on the second device. 13. The muscle strength assist method according to claim 12, wherein, The constant load generating unit applies a constant load, which is adjusted in a multi-stage manner by the plurality of constant load spring devices for applying multi-stage loads, to the user's body via the second device. 14. The muscle strength assist method according to claim 11, wherein, The constant load generating unit applies a constant load, which is adjusted in a multi-stage manner by the plurality of constant load spring devices for applying multi-stage loads, to the user's body via the second device. 15. The muscle strength assist method according to claim 14, wherein, The constant load spring device generates the constant load by selecting at least one of a central spring device and two peripheral spring devices respectively disposed on both sides of the central spring device. 16. The muscle strength assist method according to claim 15, wherein, The first device applies the constant load to the user's upper body, and The second device fixes the constant load generating part that generates the constant load to the user's waist. 17. The muscle strength assist method according to claim 11, wherein, The constant load spring device generates the constant load by selecting at least one of a central spring device and two peripheral spring devices respectively disposed on both sides of the central spring device. 18. The muscle strength assist method according to claim 12, wherein, The constant load spring device generates the constant load by selecting at least one of a central spring device and two peripheral spring devices respectively disposed on both sides of the central spring device.

Claims

1. A muscle strength assisting device, comprising: a first device to be worn on a part of a user's body; a second device to be worn on another part of the user's body; and a constant load generating portion including a constant load spring device provided on the first device and applying a constant load to the second device.

2. The muscle strength assisting device according to claim 1, wherein the constant load generating portion includes a plurality of constant load spring devices for applying a plurality of stages of constant loads, and spring end portions of each of the plurality of constant load spring devices are provided with coupling heads which are selectively coupled to the second device.

3. The muscle strength assisting device according to claim 2, wherein the plurality of constant load spring devices include a central spring device and two peripheral spring devices provided on both sides of the central spring device.

4. The muscle strength assisting device according to claim 3, wherein two coupling heads provided on the spring end portions of the two peripheral spring devices are connected to each other by a bridge.

5. The muscle strength assisting device according to claim 4, wherein a passage in which the coupling head of the central spring is placed or passed through is formed in the bridge.

6. The muscle strength assisting device according to claim 5, wherein a seat for fixing the coupling head of the central spring is formed in the passage.

7. The muscle strength assisting device according to any one of claims 1 to 6, wherein the first device is provided with a head mounting portion including a coupling bracket which provides a space in which the coupling head is inserted with respect to a frame of the first device in a case where the coupling head is detachably fixed to the first device, and the coupling bracket is provided with a locking device which pin-fixes the coupling head provided on each of the springs by a moving pin.

8. The muscle strength assisting device according to claim 7, wherein the locking device is a plunger type locking device having a cylinder fixed to the coupling bracket, a moving pin reciprocating with respect to the cylinder, and a handle connected to the moving pin.

9. The muscle strength assisting device according to claim 7, wherein the locking device is a plunger type locking device including a resilient sheet which elastically biases the reciprocating moving pin to detachably fix the coupling head by pin-fixing.

10. The muscle strength assisting device according to claim 9, wherein the first device is mounted to the user's waist, and the second device is mounted to the user's upper body.

11. A muscle strength assisting method for assisting a user's muscle strength using a muscle strength assisting device, wherein the muscle strength assisting device includes: a first device to be worn on a part of a user's body; a second device to be worn on another part of the user's body; and a constant load generating portion including a constant load spring device provided on the first device and applying a constant load to the second device, the muscle strength assisting method includes: ​ The first device worn on one part of the user's body exerts a constant load on the second device worn on another part of the user's body, wherein a constant load generating portion provided on the first device exerts a constant load on the user in response to a change in relative distance between the first device and the second device or a change in body shape according to the user's body movement.

12. The muscle power assisting method according to claim 11, wherein the constant load generating portion generates the constant load in a multi-stage manner through a plurality of springs drawn from a plurality of constant load spring devices, and the plurality of springs transmit the constant load to the second device through a head mounting portion provided on the second device.

13. The muscle power assisting method according to claim 12, wherein the constant load generating portion exerts a constant load adjusted in a multi-stage manner by a plurality of constant load spring devices for exerting a multi-stage load on the user's body through the second device.

14. The muscle power assisting method according to claim 11, wherein the constant load generating portion exerts a constant load adjusted in a multi-stage manner by a plurality of constant load spring devices for exerting a multi-stage load on the user's body through the second device.

15. The muscle power assisting method according to claim 14, wherein the constant load spring device generates the constant load through at least one selected from a central spring device and two peripheral spring devices respectively provided on both sides of the central spring device.

16. The muscle power assisting method according to claim 15, wherein the first device exerts the constant load on the user's upper body, and the second device fixes a constant load generating portion generating the constant load on the user's waist.

17. The muscle power assisting method according to claim 11, wherein the constant load spring device generates the constant load through at least one selected from a central spring device and two peripheral spring devices respectively provided on both sides of the central spring device.

18. The muscle power assisting method according to claim 12, wherein the constant load spring device generates the constant load through at least one selected from a central spring device and two peripheral spring devices respectively provided on both sides of the central spring device.

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