Assist device

Abstract

To suppress transmission loss of an assist force in an assist device.SOLUTION: The assist device 10 includes a first body-worn unit 11 to be worn on at least one of a shoulder BS, a back BB, and a chest BC of the user, a second body-worn unit 12 to be worn on a leg BL of the user, a third body-worn unit 13 to be worn on a waist BW of the user, a driving device 40 for winding or unwinding a belt body 15 extending in an up-down direction along the back BB of the user and connected to the second body-worn unit 12, and the assist device 10 is connected to the first body-worn unit 11 and the third body-worn unit 13. The control box 14 includes the support section 35 that comes into contact with the buttocks BH of the user when the user wears the first body-worn unit 11 and the third body-worn unit 13.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to an assist device. [Background technology]

[0002] Various assist devices have been proposed that are worn on the body of a user (person) and assist the user in performing work. With these assist devices, the user can perform work with little force (little strain), even when lifting a heavy object, for example. Such an assist device is disclosed, for example, in Patent Document 1.

[0003] The conventional assisting device disclosed in Patent Document 1 includes a first attachment attached to the user's shoulders, a second attachment attached to each of the left and right legs, a third attachment attached to the waist, a belt attached along the back side of the user between the first and second attachments, and a control box with an actuator inside that can retract the belt (see FIG. 9). The assisting device also includes a support device that supports the control box from the third attachment. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-049601 Summary of the Invention [Problem to be solved by the invention]

[0005] In the conventional assisting device, when an assisting force is applied to a user, the third attachment and the control box may be displaced vertically relative to the user, resulting in a loss in the transmission of the assisting force. The present disclosure aims to reduce transmission loss of assist force in an assist device. [Means for solving the problem]

[0006] The assist device of the present disclosure comprises a first attachment device attached to at least one of the user's shoulders, back, and chest, a second attachment device attached to the user's legs, a third attachment device attached to the user's waist, a drive device for winding or unwinding a belt body extending vertically along the user's back and connected to the second attachment device, and a control box connected to the first attachment device and the third attachment device and accommodating the drive device therein, the control box having a support portion that comes into contact with the user's buttocks when the user wears the first attachment device and the third attachment device.

[0007] According to the present disclosure, it is possible to suppress transmission loss of the assist force in the assist device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a rear view showing an example of an assist device. [Figure 2] FIG. 2 is a front view showing an example of an assist device. [Figure 3] FIG. 2 is a rear view of the assist device attached to the user's body. [Figure 4] FIG. 2 is a side view of the assist device attached to the user's body. [Figure 5] FIG. 2 is a perspective view of a control box that constitutes the assist device. [Figure 6] FIG. 2 is a perspective view of the casing (cover) of the control box. [Figure 7] FIG. 2 is a perspective view of the inside of the control box and the casing (base). [Figure 8] FIG. 1 is a perspective view of the control box with the orthosis attached. [Figure 9] FIG. 1 is a side view of a conventional assist device (attached to the user's body). DETAILED DESCRIPTION OF THE INVENTION

[0009] <Details of the embodiment of the present disclosure> Hereinafter, details of embodiments of the present disclosure will be described with reference to the drawings. Note that at least some of the embodiments described below may be combined in any manner.

[0010] (Overall configuration of the assist device) FIG. 1 is a rear view showing an example of an assisting device. FIG. 2 is a front view showing an example of an assisting device. FIG. 3 is a rear view of the assisting device attached to the body of a user. FIG. 4 is a side view of the assisting device attached to the body of a user. In the following description, left and right refer to the left and right of a user who is in an upright position wearing the assisting device, front and back refer to the front and back of the user, and up and down refer to the up and down of the user. The top is the side of the user's head, and the bottom is the side of the user's feet.

[0011] 1 and 2 includes a first attachment 11, two second attachments 12, a third attachment 13, and a control box 14. The first attachment 11, the second attachment 12, and the third attachment 13 are components for attaching the assist device 10 to the user's body.

[0012] The first wearing device 11 is worn on at least one of the left and right shoulders BS, the back BB, and the chest BC (see FIGS. 3 and 4), which are parts of the user's (person's) body. As shown in FIGS. 3 and 4, the first wearing device 11 of this embodiment is worn on the left and right shoulders BS. The first wearing device 11 has shoulder belts 21 and armpit belts 22. The shoulder belts 21 and armpit belts 22 are made of flexible fabric or the like.

[0013] As shown in Figures 3 and 4, the control box 14 is placed on the back BB of the user. One end of the shoulder belt 21 is connected to the upper side of the control box 14. One end of the armpit belt 22 is connected to the lower side of the control box 14 (to a support part 35 described later). The other end of the shoulder belt 21 and the other end of the armpit belt 22 are connected to each other.

[0014] By attaching the shoulder belt 21 and the armpit belt 22 to the shoulders BS, the control box 14 is carried on the user's back, and the control box 14 is positioned on the user's back BB. The control box 14 includes a casing 30, which will be described later.

[0015] The length of the armpit belts 22 is adjustable. By adjusting the length of the armpit belts 22, the control box 14 can be fitted closely to the user's back BB. Therefore, the control box 14 is attached in a state where it cannot move in the front-to-back, left-to-right, or up-and-down directions relative to the user's back BB.

[0016] 3 and 4, the second wearing device 12 is attached to the left and right legs BL of the user. Specifically, the second wearing device 12 is attached to the knees BN of the legs BL. The left and right second wearing devices 12 are symmetrical but have the same configuration.

[0017] The second wearing device 12 is made of flexible fabric or the like. The second wearing device 12 has a knee main body 23 that is worn on the rear side of the user's knee BN, and a knee belt 24 extending from the knee main body 23. The knee belt 24 encircles the knee BN at both the top and bottom of the knee BN, and its tip is fixed to the knee main body 23. The wrapping length of the knee belt 24 around the knee BN can be adjusted using a belt and buckle or a fastening member such as a hook-and-loop fastener. This adjustment brings the knee main body 23 into close contact with the rear side of the knee BN. The second wearing device 12 is worn on the knee BN so that it cannot move in the front-to-back, left-to-right, or up-and-down directions.

[0018] The first wearing device 11 and the two second wearing devices 12 are worn at two locations on either side of the user's hip joint, namely, the shoulders BS and the legs BL. In this embodiment, the legs BL refer to the area below the hip joint, and the lower back BW refers to the area including the pelvis above the hip joint and some or all of the lumbar vertebrae. The chest BC refers to the anterior part of the user's thoracic vertebrae, and the back BB refers to the posterior part of the user's thoracic vertebrae. The shoulders BS refer to the area located in the left-right direction between the base of the user's neck and the shoulder joint.

[0019] The first wearing device 11 and the second wearing device 12 may have configurations other than those described above. The first wearing device 11 may include, for example, a hard member as a portion to be hung on the shoulders BS. The first wearing device 11 may be worn not only on the shoulders BS of the user, but also on the chest BC and / or back BB. For example, the first wearing device 11 may be in the form of a belt wrapped around the chest BC and back BB of the user. Furthermore, the first wearing device 11 may be in the form of a vest worn on the upper body as an upper garment of the user.

[0020] The third wearing device 13 is worn on the waist BW of the user. The third wearing device 13 is made of flexible fabric or the like. The third wearing device 13 is formed in a belt shape and is worn by wrapping it around the waist BW. Both ends of the third wearing device 13 are provided with locking members such as buckles or hook-and-loop fasteners (not shown). The third wearing device 13 is fixed to the waist BW by wrapping the third wearing device 13 around the waist BW and locking the locking members at both ends of the third wearing device 13 together.

[0021] The assist device 10 further includes a belt member 15 in addition to the first wearing device 11, the second wearing device 12, and the third wearing device 13. The belt member 15 is provided along the back side of the user so as to connect the first wearing device 11 and the second wearing device 12. The belt member 15 includes a first belt 16, a second belt 17, and a connecting member 18.

[0022] The first belt 16 is attached to the upper body side. The second belt 17 is attached to the lower body side. The connecting member 18 connects the first belt 16 and the second belt 17. The first belt 16 and the second belt 17 are each long and flexible. The connecting member 18 is made of a resin buckle. Alternatively, a rectangular ring-shaped metal body called a "flat ring" may be used as the connecting member 18.

[0023] Each of the first belt 16 and the second belt 17 is a belt-like member made of cloth or leather, and can be bent to fit the shape of the body. Each of the first belt 16 and the second belt 17 may be a string-like belt (a wire-like member). Each of the first belt 16 and the second belt 17 in this embodiment may be made of a non-stretchable member. However, if a non-stretchable member is used for the first belt 16 and the second belt 17, it is necessary to interpose a stretchable member between the first belt 16 and the second belt 17.

[0024] (About the control box) FIG. 5 is a perspective view of a control box constituting the assist device. FIG. 6 is a perspective view of a casing (cover) of the control box. FIG. 7 is a perspective view of the interior of the control box and the casing (base). As shown in FIG. 5, the control box 14 constituting the assist device 10 includes a casing 30. As shown in FIGS. 5 to 7, the casing 30 includes a cover 30a and a base 30b. The cover 30a covers the base 30b. The base 30b is plate-shaped. The casing 30 is made of a material harder than the belt body 15, such as an aluminum alloy or a hard synthetic resin. In the casing 30 of this embodiment, the base 30b may constitute a part of the first attachment 11. A space is formed between the cover 30a and the base 30b. As shown in FIG. 7, the drive unit 40 is housed in this space.

[0025] As shown in Figures 4 and 5, the casing 30 has a first surface 31 and a second surface 32. The first surface 31 faces the back BB when the user wears the first wearing device 11 and the third wearing device 13 and carries the control box 14 on the back BB. The first surface 31 is part of the base 30b. The second surface 32 is formed on the surface of the casing 30 opposite to the first surface 31. The second surface 32 is part of the cover 30a.

[0026] As shown in FIGS. 5 and 6 , the second surface 32 further includes an opening 33 and a sliding surface 34. The opening 33 is an opening for feeding the belt body 15 (first belt 16) from the inside to the outside of the casing 30. The sliding surface 34 is a guide surface for sliding the belt body 15 (first belt 16) fed out from the opening 33 along the casing 30. In the control box 14, the sliding surface 34 is formed in a range from the opening 33 to the lower end portion 30c of the casing 30. Note that the "lower end portion 30c of the casing 30" in this embodiment refers to a region including the lower ends of the support portions 35 arranged on the left and right and the lower end portion of the casing 30 located between the support portions 35.

[0027] 4, the control box 14 has a size such that its lower end 30c reaches the buttocks BH of the user when the first attachment 11 is worn by the user. Therefore, when the user wears the assist device 10, the support part 35 of the control box 14 (casing 30) comes into contact with the buttocks BH of the user.

[0028] As shown in FIGS. 5 and 6 , the casing 30 (cover 30a) has a pair of support portions 35, 35 extending laterally at the lower end portion 30c. The support portions 35 are portions that come into contact with the user's buttocks BH when the user wears the first attachment 11 and the third attachment 13 and carries the control box 14 on their back BB. More specifically, the support portions 35 are configured to come into contact with the narrow area between the user's lower back BW and buttocks BH. Therefore, when the user carries the control box 14 on their back BB, the support portions 35 of the control box 14 rest on the buttocks BH. Therefore, the control box 14 is supported by the user's buttocks BH via the support portions 35. The assist device 10 of the present disclosure has support portions 35 on both the left and right sides of the user's buttocks BH, which can prevent misalignment between the user's body and the control box 14.

[0029] 5 and 6, in the assisting device 10 of this embodiment, the support part 35 is formed integrally with the casing 30. Specifically, the support part 35 is part of the cover 30a. The assisting device 10 of this embodiment is provided with the support part 35 without increasing the number of parts. Note that, although it is preferable that the support part 35 is formed integrally with the casing 30, it may also be a separate part.

[0030] The third attachment 13 is connected to the support part 35 of the control box 14. As shown in Fig. 4, when the user attaches the third attachment 13 to the waist BW, the support part 35 of the assist device 10 comes into contact with the user's buttocks BH. Then, when the support part 35 comes into contact with the user's buttocks BH, the control box 14 is supported by the user's buttocks BH.

[0031] 5 and 6, the casing 30 (cover 30a) further includes a pair of left and right standing wall portions 36, 36. The standing wall portions 36 are provided at the end of the support portion 35 on the second surface 32 side. The standing wall portions 36 are walls extending in a direction substantially perpendicular to the sliding surface 34. The standing wall portions 36 restrict left and right displacement of the belt body 15 (first belt 16) sliding substantially up and down along the sliding surface 34.

[0032] The casing 30 further includes a plate 37. The plate 37 is a member for sealing (blinding) a part of the opening 33. The plate 37 prevents the inside of the casing 30 (the drive unit 40) from being exposed through the opening 33. The belt body 15 (first belt 16) is fed out of the casing 30 through a gap secured between the lower part of the opening 33 and the plate 37.

[0033] 7, the casing 30 accommodates therein a driving device 40. The driving device 40 is a device that drives (winds and unwinds) the belt body 15, and includes an actuator 41, a control unit 42, a battery 43, etc. Therefore, the casing 30 accommodates the actuator 41, the control unit 42, the battery 43, etc. The first belt 16 of the belt body 15 passes through the opening 33.

[0034] The actuator 41 extends and contracts the belt body 15 between the first attachment 11 and the second attachment 12. Specifically, the actuator 41 enables winding and unwinding of a portion of the belt body 15. The actuator 41 includes a motor 45, a reducer 46, and a drive pulley 47.

[0035] In the control box 14 of this embodiment, the motor 45 is a brushless DC motor. The motor 45 can rotate at a predetermined torque and a predetermined number of rotations based on a drive signal output from the control unit 42. The motor 45 can rotate forward and reverse based on the drive signal output from the control unit 42. Rotation-related parameters of the motor 45, such as the rotation angle, rotation speed, or number of rotations, are detected by a rotation detector 48 attached to the motor 45. Note that the rotation detector 48 in this embodiment is a rotary encoder, but may also be a Hall sensor or a resolver. The detection result of the rotation detector 48 is input to the control unit 42. The control unit 42 controls the operation of the motor 45 based on the detection result, thereby allowing the assist device 10 to generate an appropriate assist force.

[0036] The reducer 46 is composed of multiple gears and reduces the rotation speed of the motor 45 to rotate an output shaft 46a of the reducer 46. A drive pulley 47 is connected to the output shaft 46a, and they rotate integrally. One end of the first belt 16 is attached to the drive pulley 47. When the drive pulley 47 rotates in one direction due to the forward rotation of the motor 45, the first belt 16 is wound onto the drive pulley 47. When the drive pulley 47 rotates in the other direction due to the reverse rotation of the motor 45, the first belt 16 is fed out from the drive pulley 47.

[0037] As described above, the actuator 41 has the drive pulley 47 capable of winding up the belt body 15, and the motor 45 for causing the drive pulley 47 to perform the winding operation of the belt body 15. The first belt 16 is wound up and fed out by the actuator 41.

[0038] The control unit 42 is composed of a control unit including a microcomputer. The control unit 42 controls the operation of the actuator 41 (motor 45). The control unit 42 receives a signal from a sensor (not shown) and estimates the user's posture based on the signal from the sensor. The battery 43 supplies power to the control unit 42, the motor 45, the rotation detector 48, etc.

[0039] (About exterior fittings) Fig. 8 is a perspective view of the control box with the exterior attached. As shown in Fig. 8, in actual use, the control box 14 is used with the exterior 19 attached. The exterior 19 is made of a stretchable mesh material such as cloth, and serves as a protective cover that covers part of the control box 14. The exterior 19 has an opening 19a formed therein for passing the belt body 15 therethrough. The opening 19a is formed in a position that allows part of the sliding surface 34 to be exposed to the outside.

[0040] In the assist device 10, the belt body 15 (first belt 16) that is fed out from the opening 33 and extends downward along the sliding surface 34 is restricted from displacement in a direction perpendicular to the sliding surface 34 by the exterior fitting 19, and its displacement in the left-right direction is restricted by the standing wall portion 36. With this configuration, the assist device 10 of this embodiment can reliably prevent the belt body 15 from shifting by the sliding surface 34, the standing wall portion 36, and the exterior fitting 19 even when the user assumes various postures.

[0041] (About cushioning materials) 2, the assisting device 10 of this embodiment further includes a cushion member 25 provided on the first surface 31 side of the control box 14. In the assisting device 10 of this embodiment, the cushion member 25 includes a first cushion member 26, a second cushion member 27, and a third cushion member 28.

[0042] The first cushion member 26 is disposed between the first surface 31 of the casing 30 and the user's back BB. The second cushion member 27 and the third cushion member 28 are disposed between the pair of left and right support sections 35, 35 of the casing 30 and the user's buttocks BH. The second cushion member 27 is disposed between the support section 35 disposed on the right side of the user and the user's buttocks BH. The third cushion member 28 is disposed between the support section 35 disposed on the left side of the user and the user's buttocks BH.

[0043] The first cushion member 26, the second cushion member 27, and the third cushion member 28 are spaced apart from one another. Therefore, in the control box 14 of this embodiment, a space X is secured between the first cushion member 26, the second cushion member 27, and the third cushion member 28. The space X allows the assist device 10 of this embodiment to ensure good ventilation between the control box 14 and the user's back BB.

[0044] Furthermore, by distributing the cushion members 25 in three locations, the assist device 10 can ensure breathability as described above and also ensure a sufficient contact area between the user's body and the cushion members 25. By ensuring a sufficient contact area between the user's body and the cushion members 25, the assist device 10 can accurately prevent the user's body from shifting from the control box 14.

[0045] Furthermore, the assist device 10 has a shape in which the support section 35 can be placed on top of the user's buttocks BH, and the weight of the control box 14 can be supported by the user's buttocks BH. Therefore, the assist device 10 makes it difficult for the control box 14 to slip downward, thereby accurately preventing misalignment between the user's body and the control box 14. Also, the support section 35 has a shape that wraps around the user's buttocks BH from the left and right sides, making it difficult for the control box 14 to slip left and right, and thereby accurately preventing misalignment between the user's body and the control box 14.

[0046] In the assist device 10, the cushion members 25 (first cushion member 26, second cushion member 27, and third cushion member 28) are fixed to the exterior device 19 using fixing members (not shown) such as hook-and-loop fasteners. Since the cushion members 25 of this embodiment are fixed to the exterior device 19 using hook-and-loop fasteners, the fixing positions can be adjusted to fit the user's body shape.

[0047] (Regarding the state of the user's assistance device) Fig. 9 is a side view of a conventional assisting device (attached to the user's body). As shown in Fig. 9, the conventional assisting device 110 differs from the assisting device 10 of this embodiment (see Fig. 4) in that it includes a control box 114 and a support device 150. Note that in Fig. 9, among the reference numerals given to the conventional assisting device 110, parts that have the same configuration as the assisting device 10 of this embodiment (see Fig. 4) are given the same reference numerals as the assisting device 10, and a description of those parts will be omitted.

[0048] As shown in FIG. 9 , the control box 114 includes a casing 130. The casing 130 has an opening 133 formed at its lower end. In the conventional assisting device 110, the belt body 15 (first belt 16) is fed out through the opening 133 located at the lower end of the casing 130. Therefore, when a user wears the assisting device 110, the belt body 15 (first belt 16, second belt 17, and connecting member 18) comes out of the control box 114, passes near the user's buttocks BH, and is then connected to the second wearing tool 12.

[0049] The support device 150 includes a pair of left and right waist connectors 151 and a pair of left and right holders 152. The pair of left and right waist connectors 151 are attached to the third wearing tool 13. When the third wearing tool 13 is worn on the waist BW, the pair of waist connectors 151 are disposed on both the left and right sides of the waist BW.

[0050] A pair of left and right holders 152 are arranged on both the left and right sides of the user's body. Each holder 152 is formed of a long, thin rod. Each holder 152 is formed of a hard material such as metal or hard synthetic resin. The lower end of each holder 152 is connected to a waist connector 151. The waist connector 151 is applied to the side of the user's waist BW. The upper end of each holder 152 is connected to the casing 130. Then, by fixing the third wearing tool 13 to the user's waist BW, the control box 114 can be supported from the user's waist BW via the support device 150. Note that in a configuration in which the support device 150 is applied to the user's waist BW, the waist connector 151 may be displaced vertically together with the third wearing tool 13.

[0051] Thus, in the assist device 110 configured to apply the support device 150 to the user's lower back BW, when an assist force is applied to the user, the control box 114 may shift vertically relative to the user, resulting in a loss in the transmission of the assist force. Also, in the conventional assist device 110, the components that make up the support device 150 (the lower back connector 151 and the holder 152) must be manufactured separately from the casing 130, which increases the number of parts.

[0052] 4, the control box 14 of this embodiment has a size such that its lower end 30c reaches the user's buttocks BH when the first attachment 11 is worn by the user. Therefore, when the user wears the assist device 10 of this embodiment, the support parts 35 and cushion members 25 of the control box 14 come into contact with the user's buttocks BH. Note that the "lower end 30c of the casing 30" in this embodiment refers to a region including the lower ends of the support parts 35 arranged on the left and right and the lower end of the casing 30 located between the support parts 35.

[0053] With this configuration, the assisting device 10 of this embodiment can support the weight of the control box 14 with the buttocks BH of the user. Therefore, the assisting device 10 makes it less likely for the control box 14 to slip downward compared to conventional configurations in which the support device 150 is applied to the lower back BW of the user. As a result, the assisting device 10 of this embodiment can accurately prevent misalignment between the user's body and the control box 14, and can reduce transmission loss of the assisting force.

[0054] Furthermore, the assisting device 10 of this embodiment can support the control box 14 from the user's body (buttocks BH) by means of the support section 35, which is part of the control box 14, and does not require a support device 150 separate from the control box 114, as in the conventional assisting device 110. Therefore, the assisting device 10 of this embodiment can reduce the number of parts compared to the conventional assisting device 110.

[0055] [Operations and Effects of the Present Embodiment] (1) The assist device 10 of the above embodiment includes a first attachment 11 attached to at least one of the user's shoulders BS, back BB, and chest BC, a second attachment 12 attached to the user's legs BL, a third attachment 13 attached to the user's waist BW, a drive unit 40 for winding or unwinding a belt body 15 extending vertically along the user's back BB and connected to the second attachment 12, and a control box 14 connected to the first attachment 11 and the third attachment 13 and accommodating the drive unit 40. In the assist device 10 of the above embodiment, the control box 14 has a support part 35 that comes into contact with the user's buttocks BH when the user wears the first attachment 11 and the third attachment 13.

[0056] The assisting device 10 configured as described above can support the control box 14 from the user's buttocks BH by the support part 35. This prevents the control box 14 from shifting position when the assisting device 10 is worn, and reduces transmission loss of the assisting force.

[0057] (2) In the assisting device 10 of the above embodiment, the support unit 35 is provided to extend in the left-right direction of the user's body from the control box 14. In the assisting device 10 of this embodiment, the control box 14 is connected to the third attachment 13 via the support unit 35. According to the assist device 10 configured in this manner, the contact area between the control box 14 and the user's buttocks BH can be secured, and displacement of the control box 14 when an assist force is applied can be more effectively prevented.

[0058] (3) In the assisting device 10 of the above embodiment, the control box 14 has a casing 30 that houses the driving device 40. In the assisting device 10 of this embodiment, the support portion 35 is formed integrally with the casing 30. With the assist device 10 configured in this way, the support section 35 that comes into contact with the user's buttocks BH can be provided without using a separate member. With this configuration, the number of parts of the assist device 10 equipped with the support section 35 can be reduced.

[0059] (4) The assist device 10 of the above embodiment further includes a first cushion member 26 positioned between the user's back BB and the control box 14, a second cushion member 27 positioned between the user's buttocks BH and the right support portion 35, and a third cushion member 28 positioned between the user's buttocks BH and the left support portion 35. The assisting device 10 configured as described above can ensure a space X between the control box 14 and the user when wearing the assisting device 10 by dividing the cushion member 25, which is provided at the position where the assisting device 10 comes into contact with the user, into three parts. This ensures breathability around the user's back BB and buttocks BH when wearing the assisting device 10.

[0060] The embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope of equivalents to the configurations described in the claims. [Explanation of symbols]

[0061] 10: Assist device 11:First fitting 12:Second fitting 13:Third attachment 14: Control box 15: Belt body 16: First Belt 25: Cushion material 26: First cushion member 27: Second cushion member 28: Third cushion member 30: Casing 35: Support Department 40: Drive unit BS: (user's) shoulders BB: (user's) back BC: (User's) Chest BH: (user's) buttocks

Claims

1. a first wearing device worn on at least one of a shoulder, a back, and a chest of a user; A second attachment to be attached to the leg of the user; a third wearing tool attached to the waist of the user; a drive device for winding or unwinding a belt body that extends in the vertical direction along the back of the user and is connected to the second wearing device; a control box connected to the first mounting fixture and the third mounting fixture and accommodating the drive device therein; The control box has a support part that comes into contact with the user's buttocks when the user wears the first wearing tool and the third wearing tool.

2. the support portion is provided to extend from the control box in the left-right direction of the user's body when the user wears the first wearing tool and the third wearing tool, The assist device according to claim 1 , wherein the control box is connected to the third attachment via the support portion.

3. the control box has a casing that houses the drive device; 3. The assist device according to claim 1, wherein the support portion is formed integrally with the casing.

4. a first cushion member positioned between the user's back and the control box; a second cushion member positioned between the buttocks of the user and the right support portion; 3. The assist device according to claim 1, further comprising: a third cushion member positioned between the user's buttocks and the left support portion.

Images