JP2023054238A - Wearing part of assist suit waist part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assist suit having more preferable wearing feeling while achieving an effect of assisting both posture correction and anteflexion motion.

SOLUTION: A wearing part of an assist suit waist part according to the invention of the present application includes a first coupling part to be directly coupled with a backbone member, the first coupling part including the backbone member mounted to the waist part of a wearer. Two tightening mechanisms include a spool part, a wire guide part arranged in a position facing the spool part, and a wire part connecting the spool part and the wire guide part. The tightening mechanisms are arranged with the first coupling part interposed therebetween. When the spool part winds the wire part guided by the wire guide part, the waist part of the wearer is tightened and the backbone member is fixed to the waist part of the wearer.

SELECTED DRAWING: Figure 10

COPYRIGHT: (C)2023,JPO&INPIT

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assist suit that corrects the posture of the body and assists the forward bending motion when carrying or loading/unloading a load.

BACKGROUND ART Conventionally, an assist suit has been proposed that corrects the posture of the body and assists the forward bending motion when carrying or loading/unloading a load. For example, the assist suit of Patent Literature 1 includes a back mounting section that is mounted on the back of the wearer, and the back mounting section includes shoulder belts and waist belts for fixing to the back of the wearer. It is provided with a spine member that is in close contact with the back mounting part from the upper back part of the wearer to the buttocks, is curved along the back part of the wearer, and is made of a member having elasticity in the bending direction.

JP 2018-11693 A

In the assist suit of Patent Literature 1, the shoulder belt and the waist belt provided in the back attachment part are used to bring the back attachment part into close contact with the back of the wearer, thereby supporting the spine member provided in the back attachment part. The elastic force of the back can assist the wearer's forward bending motion. When working in a place with high temperature in the summer or working for a long time, the wearer perspires and the wearer feels uncomfortable, and as a result, the work performed by the wearer may be hindered.

The present invention has been made to solve such problems, and aims to provide an assist suit that is more comfortable to wear while achieving both posture correction and assisting effects for forward bending.

In order to achieve such an object, the waist attachment part of the assist suit according to the present invention includes a spine member attached to the back of the wearer, a waist attachment part attached to the waist of the wearer, and the A waist mounting part of an assist suit comprising shoulder belts for fixing the spine member to the back of the wearer and waist belts for fixing the spine member to the waist of the wearer, wherein the spine A spool portion having a first connecting portion for directly connecting to a member and arranged at a predetermined position; a wire guide portion arranged at a position facing the spool portion; and the spool portion and the wire guide portion. Two tightening mechanisms are arranged sandwiching the first connecting portion, and the spool portion winds up the wire portion guided by the wire guide portion. and configured to tighten the waist of the wearer to secure the spine member to the waist of the wearer.

The assist suit includes a fixing member for fixing to the legs of the wearer, and a leg mounting section having a leg belt connected to the fixing member, and the waist mounting section is adapted to be attached to the leg. A second connecting portion may be provided for connecting with the foot attachment portion, and the foot belt may be connected to the second connecting portion so as to be connected to the foot attachment portion.

The first connecting portion includes a slit that slidably holds the foot belt, the foot belt is connected to the first connecting portion through the slit, and the foot attachment portion includes: , may be configured to be connected to the spine member via the first connecting portion.

The first connecting portion and the second connecting portion of the waist mounting portion are configured such that the leg belt of the leg mounting portion connected to the waist mounting portion has a W shape. good too.

According to the present invention, it is possible to provide an assist suit that is more comfortable to wear while achieving both posture correction and assisting effects for forward bending motion.

FIG. 1 is a diagram showing a configuration example of a spine member of an assist suit. FIG. 2 is a diagram showing a configuration example of the waist mounting portion of the assist suit. FIG. 3 is a diagram showing a configuration example of the foot mounting portion of the assist suit. FIG. 4 is a diagram showing a configuration example of an assist suit. FIG. 5 is a diagram showing another configuration example of the assist suit. FIG. 6 is a diagram showing a configuration example of an assist suit that is worn. FIG. 7 is a diagram showing another configuration example of the attached assist suit. FIG. 8 is a diagram showing an example of motion of the assist suit when the wearer performs a forward bending motion. FIG. 9 is a diagram showing another motion example of the assist suit when the wearer performs a forward bending motion. 10A and 10B are diagrams showing a configuration example of a waist mounting portion having a tightening mechanism. FIG. 11A and 11B are diagrams showing another configuration example of the waist mounting portion having a tightening mechanism.

An embodiment of the present invention will be described with reference to the drawings. The present invention can be implemented in various embodiments and is not limited to the embodiments described below.

<Structure of spine member of assist suit>
FIG. 1 is a diagram showing a configuration example of a spine member of an assist suit. The spine member 20 of the assist suit in FIG. 1 has a vertically long shape extending from the wearer's back to the buttocks, curves along the wearer's back, and is composed of a member having elasticity in the bending direction. there is The spine member 20 has a first slit 21 that slidably holds the shoulder belt 11 and a second slit 22 that slidably holds the waist belt 12 .

Left and right shoulder belts 11 for fixing the spine member to the wearer's back are respectively held via the spine member 20 and the first slit 21 and connected to the spine member 20 via the wearer's front surface. be done. By adjusting the length of the left and right shoulder belts 11, the spine member 20 can be brought into close contact with the wearer's back. The waist belt 12 is held by the spine member 20 through the second slit 22 and connected to the waist attachment part on the front of the wearer, so that the spine member 20 can be brought into close contact with the waist of the wearer. The waist belt 12 may be configured such that its length can be adjusted according to the body shape of the wearer, or it may be replaced with a waist belt having a different length.

The first slit 21 of the spine member 20 slidably holds the shoulder belt 11, and has a length that allows the position of holding the shoulder belt 11 to be changed, so that the shoulder belt 11 can be adjusted according to the body shape of the wearer. The mounting position is configured to be changeable. Similarly, the second slit 22 of the spine member 20 slidably holds the waist belt 12 and has a length that allows the position of holding the waist belt 12 to be changed, thereby adjusting the waist according to the body shape of the wearer. The mounting position of the belt 12 is configured to be changeable.

By using the spine member 20, the shoulder belts 11, and the waist belt 12 configured in this manner, the spine member 20 can be brought into close contact with the wearer's back and hips in accordance with wearers of various body shapes. By bringing the spine member 20 into close contact with the wearer's back and waist, the wearer's back and waist are integrated with the spine member 20 to correct the posture of the wearer and the elastic force of the spine member 20 allows the wearer to move. It is possible to assist the forward bending motion of the. In this configuration example, the shoulder belt 11 and the waist belt 12 are directly connected to the spine member 20 so as to be in close contact with the wearer's back and waist. It is possible to provide an assist suit that is comfortable to wear and does not interfere with the work performed by the wearer even when performing the work of (1).

The spine member 20 in this configuration example has a vertically long shape extending from the wearer's back to the buttocks, curves along the wearer's back, and is composed of a member having elasticity in the bending direction. . The members forming the spine member 20 can be made of members such as metal materials and resin materials having elasticity in the bending direction, but are not limited to these materials. The length and members of the spine member may be appropriately changed according to the body shape and physical strength of the wearer.

In the configuration example of FIG. 1, the width of a portion above the central portion in the longitudinal direction of the spine member 20, for example, the portion near the shoulder blades of the wearer's back, is relatively wider than the other portions. designed to be narrow. With such a configuration, the spine member can be configured so as not to impede the twisting motion of the wearer's upper body as much as possible while maintaining the elasticity of the spine member.

<Structure of Waist Mounting Part of Assist Suit>
FIG. 2 is a diagram showing a configuration example of the waist mounting portion of the assist suit. The waist attachment part 40 is attached to the waist of the wearer and includes a first connection part 41 for connecting with the spine member 20, and if necessary, a second connection part for connecting with the foot attachment part. 42.

The waist mounting part 40 is connected to the spine member 20 by the first connecting part 41, and by tightening the waist of the wearer when worn, the spine member 20 can be fixed to the waist of the wearer. By fixing the spine member 20 to the waist of the wearer, it is possible to prevent the spine member 20 from shifting in the vertical direction when the wearer of the assist suit bends forward. , it is possible to further enhance the effect of assisting the wearer's forward bending motion.

When the assist suit includes a foot mounting section, the waist mounting section 40 includes a second connecting section 42 for connecting with the leg mounting section. Also, the first connecting portion connecting the backbone members 20 may be configured to have a third slit 43 for slidably holding the foot belt 31 of the foot mounting portion. Through this third slit 43 the foot attachment can be directly connected to the spine member 20 .

<Structure of Foot Mounting Part of Assist Suit>
FIG. 3 is a diagram showing a configuration example of the foot mounting portion of the assist suit. According to the assist suit including the spine member 20 of FIG. 1 and the waist mounting portion 40 of FIG. In addition to the mounting portion 40, the provision of the foot mounting portion 30 to be mounted on the foot of the wearer makes it possible to further enhance the effect of assisting the forward bending motion of the wearer.

The foot mounting portion 30 of the assist suit in FIG. 3 includes a fixing member 32 for fixing to the wearer's knee, and a leg belt 31 made of an elastic member and connected to the fixing member 32. By connecting the leg belt 31 to the second connecting portion 42 of the waist mounting portion 40 , the leg mounting portion 30 can be connected to the waist mounting portion 40 .

The fixing member 32 is a cylindrical member for fixing to the left and right knees of the wearer, and is fixed to the knees of the wearer by tightening from the surroundings. As shown in the cross-sectional view of FIG. 3, the fixing member 32 may be a tubular belt having a hole for fixing to the knee, or a belt-like belt having an engaging means such as a hook-and-loop fastener. The members may be configured to be engaged above and below the knee.

The leg belt 31 is made of an elastic member. The leg belt 31 made of an elastic member is connected to the waist mounting portion 40 and connected to the fixing member 32 fixed to the knee of the wearer, so that when the wearer performs a forward bending motion. By stretching the leg belt 31, a force can be applied to the waist mounting portion 40 and the spine member 20 connected to the waist mounting portion 40 to assist forward bending of the wearer.

In addition, the first connecting portion 41 of the waist mounting portion 40 has a third slit 43 that slidably holds the leg belt 31, and the leg belt 31 is connected to the first belt through the third slit 43. By connecting to the connecting part 41, the foot mounting part 30 is directly connected to the spine member 20 via the first connecting part 41, thereby further enhancing the effect of assisting the forward bending motion of the wearer. becomes possible.

Since the foot mounting part 30 is detachably connected to the waist mounting part 40, the foot mounting part 30 can be attached and detached according to the work to be performed by the wearer to change the configuration of the assist suit, thereby enhancing the assist effect. It is possible to adjust the degree. The structure of the foot belt 31 and the fixing member 32 of the foot attachment part can also be changed as appropriate according to the body shape and physical strength of the wearer.

<Configuration of assist suit>
A configuration example of the assist suit 10 according to the embodiment of the present invention will be described with reference to FIGS. The configuration example of FIG. 4 is obtained by connecting the spine member 20 of FIG. 1 and the waist mounting section 40 of FIG. 2, and the configuration example of FIG. 5 further includes the leg mounting section 30 of FIG. It is a concatenation.

As shown in FIG. 4, the spine member 20 and the waist mounting part 40 are connected, the spine member 20 is brought into close contact with the back and waist of the wearer by the shoulder belts 11 and the waist belt 12, and further connected to the spine member 20. By fixing the waist mounting portion 40 to the waist of the wearer, it is possible to correct the posture of the wearer and assist the forward bending motion of the wearer.

In the configuration example of FIG. 5, the foot mounting portion 30 of FIG. 3 is further connected to the configuration of FIG. As shown in FIG. 5, in addition to the spine member 20 and the waist mounting section 40, the leg mounting section 30 having the elastic leg belt 31 and the fixing member 32 is fixed to the knee of the wearer. By connecting with the waist mounting part 40 by the two connecting parts 42, it is possible to further enhance the effect of assisting the wearer's forward bending motion.

Further, as shown in FIG. 5, the third slit 43 provided in the first connecting portion 41 for connecting the leg belt 31 of the foot mounting portion 30 and the spine member 20 of the waist mounting portion 40 is inserted. By connecting to the first connecting portion 41 via the foot mounting portion 30, the foot mounting portion 30 is directly connected to the spine member 20 via the first connecting portion 41, thereby assisting the forward bending motion of the wearer. It is possible to further enhance the effect.

<Configuration example of attached assist suit>
FIG. 6 is a diagram showing a configuration example of an assist suit that is worn. FIG. 6 shows a state in which the wearer 1 is wearing the assist suit 10 having the spine member 20 and the waist attachment portion 40 described in FIG. In the side view of FIG. 6, the spine member 20 is shown separated from the wearer 1 for convenience of explanation, but the spine member 20 in the present invention can be attached to the wearer's back and waist. The wearer 1 and the spine member 20 are configured to operate as one. The same applies to other drawings.

As shown in the side view of FIG. 6, the spine member 20 of the assist suit 10 has a vertically elongated shape extending from the back of the wearer 1 to the buttocks, and is curved along the back of the wearer 1. It is composed of a member having elasticity with respect to the direction. The spine member 20 has a first slit 21 that slidably holds the shoulder belt 11 and a second slit 22 that slidably holds the waist belt 12 .

The left and right shoulder belts 11 for fixing the spine member 20 to the back of the wearer 1 are each connected to the spine member 20 via a first slit 21 and connected to the spine member via the front surface of the wearer 1. 20, and by adjusting the length of the left and right shoulder belts 11, the spine member 20 can be brought into close contact with the wearer's 1 back. The waist belt 12 is held by the spine member 20 via the second slit 22, and is connected to the waist mounting part 40 on the front surface of the wearer 1, thereby bringing the spine member 20 into close contact with the waist of the wearer 1. can be done. The waist belt 12 can be connected to the waist attachment portion by engaging means such as hook-and-loop fasteners, and the connection position can be appropriately changed according to the body shape of the wearer.

The waist mounting part 40 includes a first connecting part 41 for connecting to the spine member 20, and is connected to the spine member 20 by the first connecting part 41, and tightens the waist of the wearer 1 when worn, thereby The member 20 can be fixed to the waist of the wearer 1 .

The first slit 21 of the spine member 20 slidably holds the shoulder belt 11 and has a length that allows the holding position of the shoulder belt 11 to be changed. The mounting position of the belt 11 is configured to be changeable. Similarly, the second slit 22 of the spine member 20 slidably holds the waist belt 12 and has a length that allows the position of holding the waist belt 12 to be changed. In addition, the mounting position of the waist belt 12 is configured to be changeable.

By using the spine member 20, the shoulder belt 11, the waist belt 12, and the waist attachment part 40 configured as described above, the spine member 20 can be brought into close contact with the back and waist of the wearer 1 according to various body shapes of the wearer. can be made By bringing the spine member 20 into close contact with the back of the wearer 1, the back and waist of the wearer 1 and the spine member 20 are integrated to correct the posture of the wearer 1 and prevent the wearer 1 from bending forward. It is possible to assist. By fixing the waist mounting part 40 connected to the spine member 20 to the waist of the wearer 1, it is possible to prevent the spine member 20 from being displaced in the vertical direction when the wearer 1 performs a forward bending motion. , it is possible to further enhance the effect of assisting the forward bending motion of the wearer.

Furthermore, in the present invention, since the shoulder belt 11 and the waist belt 12 are directly connected to keep the spine member 20 in close contact with the back of the wearer 1, it is possible to perform work in hot places in the summer or for long periods of time. It is possible to provide the assist suit 10 which does not interfere with the work performed by the wearer 1 even when the work of (1) is performed, and which is comfortable to wear.

<Another configuration example of the attached assist suit>
FIG. 7 is a diagram showing another configuration example of the attached assist suit. FIG. 7 shows a state in which the assist suit 10 including the spine member 20, the waist mounting portion 40, and the leg mounting portion 30 described in FIG. 5 is worn by the wearer 1. FIG. In the configuration example of FIG. 7 , in addition to the spine member 20 and the waist mounting section 40 , the foot mounting section 30 is further provided, so that the effect of assisting the forward bending motion of the wearer 1 can be further enhanced.

The foot mounting portion 30 of the assist suit 10 of FIG. 7 includes a fixing member 32 for fixing to the knee of the wearer 1, and a leg belt 31 connected to the fixing member 32, which is made of an elastic member. , and by connecting the leg belt 31 to the second connecting portion 42 of the waist mounting portion 40 , the foot mounting portion 30 can be connected to the waist mounting portion 40 .

The fixing member 32 is a cylindrical member for fixing to the left and right knees of the wearer 1, and is fixed to the knees of the wearer 1 by tightening from the surroundings. The fixing member 32 may be composed of a tubular belt provided with a hole for fixing to the knee, or a belt-like member provided with engaging means such as a hook-and-loop fastener that engages above and below the knee. It is good also as a structure which fits.

The leg belt 31 is made of an elastic member. A leg belt 31 made of an elastic member is connected to a waist mounting portion 40 and connected to a fixing member 32 fixed to the knee of the wearer 1, so that the wearer 1 performs a forward bending motion. In this case, since the leg belt 31 expands and contracts, a force that assists the forward bending motion can be exerted on the waist mounting portion 40 and the spine member 20 connected to the waist mounting portion 40. The effect of assisting the forward bending motion of the wearer 1 can be further enhanced as compared with the case where there is no foot attachment portion.

In addition, the first connecting portion 41 of the waist mounting portion 40 has a third slit 43 that slidably holds the leg belt 31, and the leg belt 31 is connected to the first belt through the third slit 43. By connecting to the connecting part 41, the foot mounting part 30 is directly connected to the spine member 20 via the first connecting part 41, further enhancing the effect of assisting the forward bending motion of the wearer 1. becomes possible.

<Operation of the assist suit>
FIG. 8 is a diagram showing an example of motion of the assist suit when the wearer performs a forward bending motion. FIG. 8 shows an example of an operation when the wearer 1 wearing the assist suit 10 having the spine member 20 and the waist attachment portion 40 as described in FIG. 6 bends forward.

The shoulder belts 11 held by the spine member 20 are connected to the spine member 20 via the front surface of the wearer 1 . The waist belt 12 is connected to the waist attachment portion 40 on the front of the wearer 1 , thereby bringing the spine member 20 into close contact with the waist of the wearer 1 . The waist mounting part 40 is connected to the spine member 20 by the first connecting part 41 , and tightens the waist of the wearer 1 when worn, thereby fixing the spine member 20 to the waist of the wearer 1 .

As shown in FIG. 8 , when the wearer 1 bends forward while the spine member 20 is in close contact with the back of the wearer 1 , the spine member 20 is integrated with the back of the wearer 1 . Therefore, the elastic force of the spine member 20 in the bending direction exerts a force in the direction of raising the back of the wearer 1, thereby assisting the wearer 1 in raising the upper body.

FIG. 9 shows an operation example when the wearer 1 wearing the assist suit 10 having the spine member 20, the waist mounting portion 40, and the foot mounting portion 30 as described in FIG. 7 performs a forward bending motion. be. In addition to the spine member 20 and the waist mounting section 40, the provision of the foot mounting section 30 further enhances the effect of assisting the forward bending motion of the wearer 1. FIG.

9. Assistance for the rising motion of the upper body of the wearer 1 by the spine member 20 and the waist mounting portion 40 in FIG. 9 is the same as in FIG. 8, so the description is omitted. In FIG. 9 , the leg belt 31 of the foot attachment part 30 is connected to the waist attachment part 40 and connected to the fixing member 32 of the knee of the wearer 1 . In this state, when the wearer 1 performs a forward bending motion, the leg belt 31 is stretched with the fixing member 32 as a starting point. When the leg belt 31 is in a stretched state, the force of contraction of the leg belt 31 starting from the fixing member 32 acts on the connected waist mounting part 40, so that the leg part starting from the fixing member 32 is applied. The stretching force of the belt 31 acts on the waist attachment portion 40 to assist the wearer 1 who is bending forward to get up.

In addition, the foot belt 31 of the foot mounting portion 30 is connected to the first connecting portion through the third slit 43 provided in the first connecting portion 41 for connecting the spine member 20 of the waist mounting portion 40. 41, the foot mounting part 30 is directly connected to the spine member 20 via the first connecting part 41, and the effect of assisting the forward bending motion of the wearer 1 can be further enhanced. It becomes possible.

The fixing member 32 in FIG. 9 is composed of a cylindrical member having elasticity for fixing to the left and right knees of the wearer 1, and is configured to tighten the upper and lower knees of the wearer from the surroundings. there is With such a configuration, when the wearer bends forward and the leg belt 31 is stretched, the fixing member 32 is less likely to shift upward, and the effect of assisting the forward bending action can be enhanced. .

As described above, in the embodiment of the present invention, the spine member 20 that is in close contact with the wearer 1 from the back to the buttocks achieves both the effect of correcting the posture of the wearer 1 and assisting the forward bending motion. Furthermore, since the shoulder belt 11 and the waist belt 12 are directly connected to keep the spine member 20 in close contact with the back of the wearer 1, the wearer can work in hot places in the summer or work for long hours. It is possible to provide the assist suit 10 which does not interfere with the work performed by the wearer and which is comfortable to wear.

Further, if the assist suit 10 is configured to include the leg mounting portion 30 connected to the spine member 20 and the waist mounting portion 40 in addition to the spine member 20 and the waist mounting portion 40, the assist suit has a higher assist effect. 10 can be provided.

<Configuration example of waist mounting part>
Another configuration example of the waist mounting portion 40 will be described with reference to FIGS. 10 and 11 are diagrams showing a configuration example of the waist mounting portion 40 provided with the tightening mechanism 50. FIG.

The waist attachment portion 40 of FIG. 10 includes a spool portion 51 arranged at a predetermined position of the waist attachment portion 40, a wire guide portion 52 arranged at a position facing the spool portion 51, and a wire guide portion 51 and the wire guide portion. A tightening mechanism 50 comprising a wire portion 53 connecting between 52 is provided. The tightening mechanism 50 is configured to tighten the wearer's waist by winding the wire portion 53 guided by the wire guide portion 52 with the spool portion 51 while the waist attachment portion 40 is worn by the wearer. there is By providing such a tightening mechanism 50, the waist mounting portion 40 can be brought into closer contact with the wearer, so that the effect of assisting the forward bending motion of the wearer can be further enhanced.

As shown in FIG. 10, the spool portion 51 and the wire guide portion 52 may be arranged at positions facing each other with a band portion 44 made of a material having higher flexibility than other portions sandwiched therebetween. With such a configuration, the waist attachment portion 40 can be brought into closer contact with the waist of the wearer according to the body shape of the wearer. Further, as shown in FIG. 11, the wire guide portion 52 of the tightening mechanism 50 of FIG. 10 is divided into two wire guide portions (first wire guide portion, second wire guide portion) (52-1, 52-2). and another wire guide portion (third wire guide portion) (52-3) is provided on the spool portion 51 side, and two wire guide portions are provided at positions facing the spool portion 51 and the wire guide portion (52-3). It may be configured such that the wire guide portions (52-1, 52-2) are arranged.

DESCRIPTION OF SYMBOLS 1...Wearer 10...Assist suit 11...Shoulder belt 12...Waist belt 20...Spine member 21...First slit 22...Second slit 30...Foot attachment part 31...Foot part belt, 32... fixing member, 40... waist attachment part, 41... first connecting part, 42... second connecting part, 43... third slit, 50... tightening mechanism, 51... spool part, 52, 52- 1 to 52-3... wire guide part, 53... wire part.

Claims (4)

A spine member attached to the back of a wearer, a waist attachment portion attached to the waist of the wearer, shoulder belts for fixing the spine member to the back of the wearer, and the spine member. A waist attachment part of an assist suit comprising a waist belt for fixing to the waist of the wearer,
a first connection for direct connection with the spine member;
Two fasteners, which are composed of a spool portion arranged at a predetermined position, a wire guide portion arranged at a position facing the spool portion, and a wire portion connecting between the spool portion and the wire guide portion. a mechanism disposed across the first connecting portion;
The spool portion winds up the wire portion guided by the wire guide portion, thereby tightening the waist of the wearer and fixing the spine member to the waist of the wearer. The waist attachment part of the suit. The assist suit includes a fixing member for fixing to the leg of the wearer, and a foot attachment section including a foot belt connected to the fixing member,
The waist mounting part has a second connecting part for connecting to the foot mounting part, and is connected to the foot mounting part by connecting the foot belt to the second connecting part. The waist mounting portion of the assist suit according to claim 1, configured as follows. The first connecting part has a slit that slidably holds the leg belt,
The foot belt is connected to the first connecting portion through the slit, and the foot mounting portion is connected to the spine member through the first connecting portion. A waist attachment part of the assist suit according to claim 2. The first connecting portion and the second connecting portion of the waist mounting portion are configured such that the leg belt of the leg mounting portion connected to the waist mounting portion has a W shape. A waist attachment part of the assist suit according to claim 3.

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