Abdominal pressure assist belt

Abstract

To provide an abdominal pressure assist belt capable of increasing abdominal pressure during a lifting motion and reducing the load on the lower back, with a simple and inexpensive structure.SOLUTION: An abdominal pressure assist belt 1 according to the present invention comprises: a belt body 2 to be worn around the waist; air bags 6, 7, 8, 9 built into the belt body 2; an air supply unit 18 disposed on the belt body 2 for supplying and discharging air to and from the air bag 6; and a control unit 19 that controls the air supply in accordance with the inclination of the belt body 2.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an abdominal pressure assist belt that reduces the load on the lower back during lifting movements. [Background technology]

[0002] Traditionally, particularly in the nursing care and transportation industries, movements such as flexing the hip and knee joints and flexing the lumbar spine to lift and move people or objects below have been performed daily, and then extending the hip and knee joints to lift the object.

[0003] However, when lifting a person or object with the lower back bent, the abdominal muscles, such as the internal oblique muscles, are activated to stabilize the area around the spine, but if abdominal pressure is low, excessive strain is placed on the lower back, which can cause lower back pain.

[0004] Therefore, there is a need to reduce the load on the lower back when lifting in the nursing care and transportation industries, etc. In nursing care settings, mechanical lifts and standing machines are used instead of manual labor, and in the transportation industry, etc., there are many examples of workers simply wearing belts that tighten around the abdomen to increase abdominal pressure.

[0005] However, lifts and standing machines have drawbacks such as the cost of introduction and the size of the room they are used in, making them difficult to introduce in personal care at home or small facilities. Furthermore, belts that tighten the abdomen to increase abdominal pressure are constantly tightened, making them less convenient to use when performing tasks that do not involve lifting, and they also have the problem of being cumbersome to put on every time a lifting task is performed.

[0006] In response to such problems, for example, the technology relating to the assistive device described in Patent Document 1 is an assistive device that assists the muscle strength of a specific part of the user's body, and is equipped with a main body that is attached around the specific part, an actuator that is attached to the main body and generates a tightening force on the part when the main body is attached to the user's part, and a control unit that adjusts the tightening force on the part.

[0007] This technology automatically controls the tightening force on the waist without the need to operate belts or other devices that tighten the corset, so even if the corset is worn underneath clothing, there is no need to roll up the clothing to tighten the corset.

[0008] Furthermore, the technology related to the motion-assistance suit described in Patent Document 2 comprises clothing worn on the upper body of the user, a belt that is integrally connected to the clothing and arranged from the back side to the front side, an artificial muscle section that is arranged vertically on the back side of the clothing and contracts when air is supplied to it, pulling the belt, a first connecting part that is located on the back side of the clothing and connects or disconnects the upper end of the artificial muscle section from the belt, a second connecting part that is located on the back side of the clothing below the first connecting part and connects or disconnects the lower end of the artificial muscle section, an air tank that is connected to the artificial muscle section and stores air to be supplied to the artificial muscle section, a control unit that is located in the connection path that connects the lower end of the artificial muscle section to the air tank and controls the supply of air from the air tank and the exhaust of air from the artificial muscle section, and a switch that sends instruction signals to the control unit; the artificial muscle section can be removed from the clothing by disconnecting the first connecting part and the second connecting part.

[0009] This technology is also said to be able to improve the user's mobility while ensuring driving force using artificial muscles. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-133121 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-148488 Summary of the Invention [Problem to be solved by the invention]

[0011] Indeed, the technology disclosed in Patent Document 1 has the advantage of being easy to use, as the actuator is automatically controlled according to the wearer's posture, allowing the corset to tighten around the waist with optimal force for each movement.

[0012] However, the actuators are expensive because they are made of polymeric materials that contract or expand electrically. Moreover, the tightening force of the corset is largely dependent on the front actuator (260), and the rest is to compensate for the back muscle strength by the rear actuator, so there are structural problems with directly increasing abdominal pressure.

[0013] Furthermore, according to the technology disclosed in Patent Document 2, the driving force is secured using an artificial muscle section, which makes it easy to adapt to the movements of the human body in terms of reinforcing the muscles. However, since the clothing worn on the user's upper body has various structures attached to it, it is unavoidable that it will get caught on or come into contact with other objects during work, which means that other clothing must be worn over the clothing, which is cumbersome.

[0014] Furthermore, the artificial muscle section works by pressurizing the air inside the rubber tube, expanding radially while contracting axially to exert the tensile force of muscle, which makes it expensive and poses durability problems. Moreover, because the artificial muscle section is made up of a section around the waist and a roughly V-shaped section connected to it above, there is the problem that the control required to appropriately increase abdominal pressure becomes extremely complicated.

[0015] The present invention has been made in consideration of the above circumstances, and aims to provide an abdominal pressure assist belt that has a simple and inexpensive configuration and can increase abdominal pressure during lifting movements and reduce the load on the lumbar region. [Means for solving the problem]

[0016] In order to achieve the above object, the present invention provides the following.

[0017] The invention of claim 1 aims to provide an abdominal pressure assist belt comprising a belt body to be worn around the waist, an air bag built into the belt body, an air delivery unit disposed in the belt body for letting air in and out of the air bag, and a control unit for controlling the delivery of the air in response to the inclination of the belt body.

[0018] The invention of claim 2 aims to provide the abdominal pressure assist belt described in claim 1, characterized in that the belt body is formed in a curved convex shape on the front side or the front and rear sides when worn.

[0019] The invention of claim 3 aims to provide the abdominal pressure assist belt described in claim 2, characterized in that the air bags installed on the front side of the belt body are arranged vertically adjacent to each other in a central portion, with multiple horizontal air bags in the shape of a band extending horizontally, and multiple inclined air bags in the shape of a band expanding outward and arranged at an angle on both sides of the central portion.

[0020] The invention of claim 4 aims to provide the abdominal pressure assist belt described in claim 3, characterized in that the air bags installed on the rear side of the belt body are multiple vertical air bags in the shape of a strip extending vertically and arranged adjacent to each other in the horizontal direction.

[0021] The invention of claim 5 aims to provide an abdominal pressure assist belt as described in any one of claims 1 to 4, characterized in that the belt main body has an internal space consisting of a front sheet portion and a rear sheet portion that surround the air bag from the front and rear and almost seal it, an air blowing section that sends out air for ventilation is arranged within the internal space, and multiple air holes that penetrate the internal space are drilled in the rear sheet portion, allowing air to be freely blown toward the belt wearer. [Effects of the Invention]

[0022] According to the invention of claim 1, the belt comprises a belt body to be worn around the waist, an air bag built into the belt body, an air delivery unit disposed in the belt body to let air in and out of the air bag, and a control unit to control the delivery of air in response to the inclination of the belt body. As a result, the belt has a simple configuration that only controls whether or not air is delivered to the air bag, so it can be manufactured inexpensively, and furthermore, when air is not being supplied to the air bag, it does not press on the waist area and blends in with the belt body, so it does not hinder workability even when worn.

[0023] Furthermore, by controlling the control unit to send out air in accordance with the tilt of the belt body during the lifting operation, abdominal pressure can be easily increased, thereby reducing the load on the lower back with a simple configuration.

[0024] According to the invention of claim 2, the belt body is formed in a curved convex shape on the front side or on the front and back sides when worn, thereby reinforcing the external oblique muscle that is widely distributed on the upper outside of the front of the waist, the internal oblique muscle that is widely distributed on the lower inside, and the transverse abdominis muscle that is widely distributed above and below in the deep central part of the front of the waist, thereby providing wide protection to the spine, including the lumbar vertebrae that extend above and below on the back side of the waist.

[0025] According to the invention of claim 3, the air bags installed on the front side of the belt body are configured so that a plurality of horizontal air bags in the shape of a band extending horizontally are arranged adjacent to each other in the vertical direction in the central part, and a plurality of inclined air bags in the shape of a band expanding outward and arranged at an angle are arranged adjacent to each other in the vertical direction on both sides of the central part, thereby efficiently assisting the activity of the abdominal muscles in a direction that matches the muscle directions of the external oblique muscles, internal oblique muscles, and transverse abdominis muscles, thereby increasing abdominal pressure.

[0026] According to the invention of claim 4, the air bags installed on the rear side of the belt main body are belt-shaped vertical air bags that extend vertically and are arranged adjacent to each other in the horizontal direction, thereby efficiently protecting the spine from bending in the same direction as the spine, including the lumbar vertebrae, that extend up and down at the rear of the waist.

[0027] According to the invention described in claim 5, the belt body has an internal space consisting of a front sheet portion and a rear sheet portion that surround the air bag from the front and rear and almost seal it, and an air blowing section that sends out air for ventilation is arranged within the internal space, and multiple air holes that penetrate the internal space are drilled in the rear sheet portion so that air can be freely blown toward the belt wearer, so that the abdominal pressure assist belt can be worn for long periods of time without becoming stuffy and can be used comfortably. [Brief explanation of the drawings]

[0028] [Figure 1] (a) is a front view of the abdominal pressure assist belt of this embodiment when worn, (b) is a back view, (c) is a left side perspective view, (d) is a right side perspective view, and (e) is an explanatory diagram of how to lift luggage while wearing the belt. [Figure 2] 1(a) is a front view (outside) of the abdominal pressure assist belt according to this embodiment, and FIG. 1(b) is a back view (inside). [Figure 3] 1A is a simplified perspective view of the outer side of the abdominal pressure assist belt according to this embodiment, and FIG. 1B is a schematic view with the outer front sheet portion removed. [Figure 4] FIG. 2 is a simplified perspective view of the inside of the abdominal pressure assist belt according to the present embodiment. [Figure 5] 1(a) is a front view (outside) of another abdominal pressure assist belt according to this embodiment, and FIG. 1(b) is a back view (inside). [Figure 6] 10(a) is a simplified perspective view of the outside of another abdominal pressure assist belt according to this embodiment, and FIG. 10(b) is a schematic view with the inside rear sheet portion removed. [Figure 7] FIG. 10 is a simplified perspective view of the inside of another abdominal pressure assist belt according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] The gist of the abdominal pressure assist belt according to the present invention is that it comprises a belt body to be worn around the waist, an air bladder housed within the belt body, an air delivery unit disposed within the belt body for letting air in and out of the air bladder, and a control unit for controlling the delivery of air in response to the inclination of the belt body. In other words, the aim is to provide an abdominal pressure assist belt that has a simple and inexpensive configuration and can increase abdominal pressure during lifting movements, thereby reducing the load on the waist.

[0030] An embodiment of the abdominal pressure assist belt 1 according to the present invention will be described below with reference to the drawings. In addition, in this description, structures and parts that are identical or symmetrical on the left and right sides are generally given the same reference numerals, and only one of the left and right sides will be described, with the other side being omitted as appropriate.

[0031] Furthermore, the inside and outside of the abdominal pressure assist belt 1 will be described with the side that comes into contact with the human body when worn as the inside i, and the side that can be seen from the outside when worn as the outside g.

[0032] Furthermore, when wearing the abdominal pressure assist belt 1, the front and back will be described as the side that faces the abdomen when worn on the human body (hereinafter referred to as the front side f), and the side that faces the back when worn on the human body (hereinafter referred to as the back side r), as shown in Figure 1(a).

[0033] As shown in Figures 1(a) to (e), 2(a), (b), and 3(b), the abdominal pressure assist belt 1 according to an embodiment of the present invention is composed of a belt main body 2 to be worn around the waist, an air bag 6 housed within the belt main body 2, an air delivery section 18 disposed within the belt main body 2 for letting air in and out of the air bag 6, and a control section 19 for controlling the delivery of air in response to the inclination of the belt main body 2.

[0034] That is, as shown in Figures 1(a) to (d), when a belt wearer M wearing the abdominal pressure assist belt 1 of this embodiment around his or her abdomen bends over to lift luggage S or the like as shown in Figure 1(e), the control unit 19 determines the angle at which the upper body leans forward and drives the air delivery unit 18, which delivers air to the air bag 6, causing the belt main body 2 to expand and increasing the abdominal pressure of the belt wearer M.

[0035] The specific configuration will be described in detail below with reference to the drawings.

[0036] Figure 2(a) is a front view of the belt body 2 showing the outside g, and Figure 2(b) is a back view of it showing the inside i. The belt body 2 is surrounded by a front sheet portion 3 and a rear sheet portion 11 of approximately identical shape so as to sandwich the air bag 6 from the front and rear. On the front side f, which is the front side when the belt body 2 is worn, there are formed a front upper convex portion 4 and a front lower convex portion 5 that are curved convex upward and downward, and on the rear side r, which is the rear side, there are formed a back upper convex portion 12 and a back lower convex portion 13 that are curved convex upward and downward.

[0037] In addition, the front sheet portion 3 and the rear sheet portion 11 are formed from a flexible sheet material, and in this embodiment, the air bag 6 is placed in the gap between the two sheet portions 3, 11 made of synthetic resin fiber and formed into a predetermined shape, as shown in the simplified perspective view of Figure 3(a), and the edges of the two sheet portions 3, 11 are sewn together all around to form a single unit.

[0038] The material of the front sheet portion 3 and the rear sheet portion 11 is not limited to synthetic resin fiber, but may be any material that flexibly follows the movements of the wearer.

[0039] As shown in Figures 2(a) and (b), a first hook-and-loop fastener 15 and a second hook-and-loop fastener 16 are formed on the left and right ends of the front sheet portion 3 and the rear sheet portion 11 by sewing or adhering them to the inner side i and the outer side g, respectively, as engagement portions 14 for wrapping and securing the belt body 2 around the waist. As shown in Figure 3(b), which shows a schematic diagram with the front sheet portion 3 removed, a control box 17 incorporating an air delivery unit 18 and a control unit 19 is arranged in the gap between the front side f and the back side r of the outer side g. As shown in Figure 3(a), the control box 17 and the second hook-and-loop fastener 16 are arranged to protrude forward from the surface of the front sheet portion 3, and the first hook-and-loop fastener 15 is arranged to protrude rearward from the surface of the rear sheet portion 11, as shown in Figure 4.

[0040] In addition, in the abdominal pressure assist belt 1 of this embodiment, the engagement portion 14 uses a hook-and-loop fastener that is formed to engage on the side of the body, as shown in Figure 1(d), but the structure of the engagement portion 14 can be any type, such as a pin buckle or a resin buckle, and various changes can be made to the engagement point within the scope of the gist of the present invention.

[0041] The air delivery unit 18 is made up of a small air pump, and the control unit 19 is made up of an inclination sensor and acceleration sensor that detect the inclination of the belt body 2, a storage medium that stores data consisting of control rules that control the ON / OFF of the air delivery unit 18 in response to angle signals output from the sensors, and an electric circuit equipped with an arithmetic processing unit, and the air delivery unit 18 and control unit 19 are built into the control box 17 as shown in Figure 3(b).

[0042] In addition, air delivery unit 18 is equipped with an electromagnetic valve that cuts off the delivery of air when air bag 6 is filled with a predetermined amount of air, thereby maintaining the inflated state of air bag 6.Furthermore, control unit 19 controls air pump 18 to stop when the electromagnetic valve is activated, and this operation indicates that air delivery unit 18 is in the ON state.

[0043] When air is to be discharged from the inflated air bag 6, the controller 19 controls the above-mentioned solenoid valve to operate on the exhaust side, and this operation indicates that the air delivery unit 18 is in the OFF state.

[0044] In addition, a storage battery for driving the air pump, solenoid valve, electric circuit, etc. is also housed within the control box 17, and operating means such as a power switch are disposed on the outer surface of the control box 17 so as to be freely operable.

[0045] The configuration for filling and discharging air into air bag 6 is not limited to the one described above, and various modifications and variations are possible within the scope of the present invention.

[0046] In addition, the air bag 6 is made of a flexible and airtight synthetic resin material such as nylon or polyethylene, and is formed in a strip (band) shape when viewed from above, with the bag-like shape sealed together to maintain airtightness except for the part connected to the air pipe 10.

[0047] The air bag 6, which is rectangular in shape when viewed from above, is a roughly flat band-like shape when no air flows in, but when air flows in, it expands into a cylindrical shape and applies pressure to the abdomen and back of the wearer of the abdominal pressure assist belt 1.

[0048] Furthermore, air sent out from air sending section 18 in control box 17 is communicated with a plurality of air bags 6 by flexible air piping 10, so that all air bags 6 can be freely inflated and deflated.

[0049] In this embodiment, all the air bags 6 are inflated and deflated at the same time, but the present invention is not limited to this.

[0050] In addition, a through hole is formed in the front sheet portion 3 to allow the air piping 10 extending from the air delivery section 18 in the control box 17 to pass through to the internal space e of the belt main body 2, and the control box 17 incorporating the air delivery section 18 etc. is removably connected to the front sheet portion 3 by hook-and-loop fasteners formed on the surface of the front sheet portion 3 and the back surface of the control box 17.

[0051] The structure for connecting the control box 17 to the front seat portion 3 is not limited to a hook-and-loop fastener, and it does not necessarily have to be detachable.

[0052] The air piping 10 is made of a small diameter tube made of synthetic resin such as silicone, polyolefin, polyurethane, or nylon, which is flexible enough to follow the wearer's movements and has a hardness that does not bother the wearer even when the air piping 10 presses against the body through the rear seat portion 11.

[0053] The air bags 6 housed inside the front side f of the belt body 2 are made up of a plurality of horizontal air bags 7 extending horizontally in the center, arranged adjacent to each other in the vertical direction from the lower front convex portion 5 at the bottom to the upper front convex portion at the top, and a plurality of inclined air bags 8 expanding outward on both sides of the center and arranged at an angle, arranged adjacent to each other in the vertical direction from the lower front convex portion 5 at the bottom to the upper front convex portion at the top.

[0054] Furthermore, the air bag 6 installed inside the back side r of the belt body 2 is made up of multiple vertical air bags 9, each extending in the vertical direction and arranged adjacent to the other in the horizontal direction, from the lower back lower convex part 13 to the upper back upper convex part 12.

[0055] In this embodiment, a large number of air bags 6 are arranged as described above, but various modifications and variations are possible, such as forming one horizontal air bag 7 extending from the front lower convex portion 5 to the front upper convex portion, arranging one inclined air bag 8 extending from the front lower convex portion 5 to the front upper convex portion on each side of the horizontal air bag 7, or forming one vertical air bag 9 extending from the back lower convex portion 13 to the back upper convex portion 12.

[0056] Furthermore, in another abdominal pressure assist belt 1' according to this embodiment, as shown in Figures 5(a), (b) and 6(a), the belt main body 2 has an air blowing section 20 disposed therein that blows air into an internal space e consisting of a front sheet section 3 and a rear sheet section 11 that surround and substantially seal the air bag 6 from the front and rear, and the rear sheet section 11 can also have multiple air holes 21 drilled therein that penetrate the internal space e.

[0057] Specifically, Fig. 5(a) is a front view of the belt body 2 showing the outside g, and Fig. 5(b) is a rear view showing a schematic diagram of the inside i. The air blower 20 is disposed on the right edge of the front sheet part 3, which becomes the outside g when the belt body 2 is worn on the body, and air holes 21 are drilled in the rear sheet part 11, which becomes the inside i.

[0058] The front sheet portion 3 and the rear sheet portion 11 are formed from a flexible sheet material, and although these constituent materials may be made from synthetic resin fibers as described above, it is desirable to use a single sheet made from a flexible and airtight synthetic resin material such as nylon or polyethylene on the inner surface of at least the opposing sheet portions 3, 11 that form the inner wall of the internal space e, thereby improving airtightness and enabling the air in the internal space e to be efficiently discharged through the air hole 21.

[0059] Furthermore, when connecting the peripheries of both sheet portions 3, 11 over the entire periphery, it is preferable to form them integrally by thermocompression bonding or the like rather than by sewing, in order to improve the airtightness of the internal space e.

[0060] The control box 17, the blower 20, and the first hook-and-loop fastener 15 are disposed so as to protrude forward from the surface of the front sheet portion 3.

[0061] The blower unit 20 is driven by an electric motor and has multiple blades on a rotating shaft that forms an axis approximately perpendicular to the belt body 2, so that it can blow outside air into the internal space e.It is also desirable to form an opening on the side of the blower unit 20 located within the internal space e so that the air blown into the internal space e is blown in a direction along the belt body 2.

[0062] As shown in the simplified perspective view of the outside g in Figure 6(a), air bags 6 are formed on the front side f and the back side r as described above, and as shown in Figure 6(b), which shows a schematic view of the inside i with the rear sheet portion 11 removed, air (arrows) blown out from the blower section 20 passes through the gaps between the multiple air bags 6 and spreads throughout the entire internal space e.

[0063] As shown in the simplified perspective view of the inside i in Figure 7, the air in the internal space e can be discharged to the outside through multiple air holes 21 drilled in positions that do not interfere with the air bag 6, control box 17, and first and second hook-and-loop fasteners 15, 16.

[0064] The storage battery that drives the blower 20 is also built into the blower 20, and operation means such as a power switch are disposed on the outer surface of the blower 20 so as to be freely operable.

[0065] As explained above, the abdominal pressure assist belt 1, 1' of this embodiment comprises the belt main body 2 to be worn around the waist, the air bag 6 built into the belt main body 2, the air delivery section 18 arranged in the belt main body 2 and which feeds and releases air into the air bag 6, and the control section 19 which controls the delivery of air in response to the tilt of the belt main body 2. As a result, it has a simple configuration which only controls whether or not air is delivered to the air bag 6, so it can be manufactured inexpensively, and furthermore, when air is not being supplied to the air bag 6, it does not compress the waist area and blends in with the belt main body 2, so it does not hinder workability even when worn.

[0066] Moreover, by controlling the control unit 19 to send out air in accordance with the inclination of the belt body 2 during the lifting operation, abdominal pressure can be easily increased, thereby reducing the load on the lower back with a simple configuration.

[0067] Furthermore, the belt body 2 is formed with a curved convex shape on the front side f or on the front side f and the rear side r, which reinforces the external oblique muscle that is widely distributed on the upper outside of the front of the waist, the internal oblique muscle that is widely distributed on the lower inside, and the transverse abdominis muscle that is widely distributed on the upper and lower sides of the central front part of the waist, thereby providing wide protection to the spine, including the lumbar vertebrae that extend up and down on the rear side of the waist.

[0068] Furthermore, the air bags 6 installed inside the front side of the belt body 2 are made up of a plurality of horizontal air bags 7 in the shape of a strip that extend horizontally in the center and are arranged adjacent to each other in the vertical direction, and a plurality of inclined air bags 8 in the shape of a strip that are arranged adjacent to each other in the vertical direction and that expand outward at an angle on both sides of the center, thereby efficiently assisting the activity of the abdominal muscles in a direction that matches the muscle directions of the external oblique muscles, internal oblique muscles, and transverse abdominis muscles, thereby increasing abdominal pressure.

[0069] Furthermore, the air bag 6 installed inside the back side r of the belt body 2 is made up of multiple vertical air bags 9 in the shape of a strip extending vertically, arranged adjacent to each other in the horizontal direction, thereby efficiently protecting the bending of the spine in the same direction as the spine, including the lumbar vertebrae, which extend up and down at the back of the waist.

[0070] Furthermore, the belt main body 2 has an internal space e consisting of a front sheet portion 3 and a rear sheet portion 11 that surround and almost seal the air bag 6 from the front and rear, and an air blowing section 20 that sends out air for ventilation is arranged within the internal space e, and multiple air holes 21 that penetrate the internal space e are drilled in the rear sheet portion 11 so that air can be freely blown toward the belt wearer M, allowing the abdominal pressure assist belt 1' to be worn for long periods of time without becoming stuffy and being comfortable to use.

[0071] Although the preferred embodiments of the abdominal pressure assist belts 1, 1' according to the present invention have been described above, the present invention is not limited to specific embodiments, and various modifications and variations are possible. [Explanation of symbols]

[0072] e. Interior space f Front side (front side) M belt wearer r Rear side (rear side) 1 Abdominal pressure assist belt 1' Abdominal pressure assist belt 2 Belt body 3 Front seat section 6 Air bladders 7 Horizontal air bladder 8 Inclined Air Bladder 9 Vertical Air Bladder 11 Rear seat section 18 Air delivery section 19 Control Unit 20 Blower 21 Air vent

Claims

1. The belt itself is worn around the waist, an air bag disposed inside the belt body; an air delivery section disposed on the belt body for feeding air into and discharging air from the air bag; and a control unit that controls the air delivery in response to the inclination of the belt body.

2. 2. The abdominal pressure assist belt according to claim 1, wherein the belt body is formed in a curved convex shape on the front side or on both the front and rear sides when worn.

3. The abdominal pressure assist belt according to claim 2, characterized in that the air bags installed on the front side of the belt body are arranged such that a plurality of horizontal air bags in the shape of a band extending horizontally are arranged adjacent to each other in the vertical direction in the central portion, and a plurality of inclined air bags in the shape of a band extending outward and arranged at an angle are arranged adjacent to each other in the vertical direction on both sides of the central portion.

4. The abdominal pressure assist belt according to claim 3, characterized in that the air bags installed on the rear side of the belt body are multiple vertical air bags in the shape of a strip extending vertically and arranged adjacent to each other in the horizontal direction.

5. An abdominal pressure assist belt as described in any one of claims 1 to 4, characterized in that the belt main body has an internal space consisting of a front sheet portion and a rear sheet portion that surround the air bag from the front and back and approximately seal it, an air blowing section that sends out air for ventilation is arranged within the internal space, and multiple air holes that penetrate the internal space are drilled in the rear sheet portion so that air can be freely blown toward the belt wearer.

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