KR20240029875A - Auxiliary Equipment For Worker - Google Patents

Abstract

The present invention minimizes weight and cost by using a non-powered method and simplifies the structure. The present invention minimizes weight and cost by using a non-powered method and simplifies the structure, and provides auxiliary torque to the hip joint area when working with the wearer's luggage. and an assistive device for workers that can provide assistive force for loads and at the same time provide various degrees of freedom in rotation or bending of the upper body.

Description

Auxiliary Equipment For Worker}

The present invention relates to assistive devices for workers. More specifically, the present invention minimizes weight and cost in a non-electrical manner, simplifies the structure at the same time, provides auxiliary torque in the hip joint area and auxiliary force for load when working with the wearer's luggage, and provides various rotations or bending of the upper body. It relates to an assistive device for workers that can provide a degree of freedom.

Recently, powered wearable robots for workers have been introduced. Wearable robots for workers are being introduced to support repetitive loads applied to the worker's body when repeating specific movements or to assist the worker's movements.

Most are equipped with an electric actuator, which generates a force greater than the wearer's physical ability, provides auxiliary force to protect joints and muscles during repetitive movements, or assists the worker's posture due to the nature of work that requires maintaining an uncomfortable posture for a long period of time. It can play a role in reducing body fatigue by providing strength. In addition, equipment (equipment for vehicle assembly or construction work, etc.) that provides assistance against gravity in a specific posture using springs rather than an electric actuator has been introduced, but such products are designed to support a specific posture. It is not appropriate for work that requires various movements and degrees of freedom.

The loading and unloading of parcels performed in logistics complexes involves loading and unloading baggage through continuous repetitive movements in a small space, where the items being handled are not standardized in size or weight, and must withstand the weight of the baggage. There is also a gap between the conveyor belt and the vehicle. The movements of repeatedly twisting the body or bending and erecting the upper body are repeated for a long period of time, and the number of workers is operated flexibly depending on the volume of goods.

There is a great demand for worker aids that can reduce fatigue and injuries and increase work efficiency for workers working on loading and unloading parcels while minimizing cost, weight, and size.

The present invention minimizes weight and cost through a non-electrical method, simplifies the structure, provides auxiliary torque in the hip joint area and auxiliary force for load when working with the wearer's luggage, and provides various degrees of freedom for rotation or bending of the upper body. The problem to be solved is to provide an assistive device for workers.

In order to solve the above problem, the present invention includes an upper body unit mounted on the wearer's upper body; A pelvic unit worn on the wearer's pelvis; A thigh unit worn on the wearer's thigh; a connecting unit connecting the upper body unit, the pelvic unit, and the thigh unit, and providing auxiliary torque to assist the wearer in extending or flexing the hip joint; And, a wire traction device equipped with a traction wire wound on the upper body unit and provided with a traction force for pulling a glove-shaped hand support portion mounted on the wearer's hand.

Additionally, the connection unit may include an auxiliary torque generator mounted on the pelvic unit; It includes a pair of upper connection bars connecting the auxiliary torque balance device and the upper body unit and a pair of lower connection bars connecting the auxiliary torque balance device and the thigh unit,

The auxiliary torque generator may generate restoration torque when the connection angle between the upper connection bar and the lower connection bar decreases.

In addition, the pelvic unit includes a pair of pelvic members surrounding both sides of the wearer's pelvis, and the auxiliary torque generating device constituting the connection unit may be mounted on the outside of each pelvic member to be rotatable in a predetermined range. .

Here, the auxiliary torque generating device includes a housing, a cam member rotatably mounted on a rotation axis eccentric with the housing, a curved rolling surface on the outer circumferential surface, and a cam member connected to the lower connecting bar, along the rolling surface of the cam member. A cam roller that is rolled and connected to the upper connecting bar, an elastic member that is mounted in a compressed state within the housing to propel the cam roller in the direction of the rolling surface of the cam member, and the elastic member is supported at one end. A mount member on which the cam roller is rotatably mounted at the other end may be provided.

Additionally, the elastic member may be a coil spring compressible in the longitudinal direction of the housing.

Additionally, the upper connecting bar may be connected to the housing side of the auxiliary torque generating device, and the lower connecting bar may be connected to the cam member side of the auxiliary torque generating device.

Additionally, the upper connection bar may be bent from the housing of the auxiliary torque generator to the rear of the wearer's upper body and connected to the upper body unit.

Here, the upper body unit includes a back panel member including a back panel that surrounds the wearer's back panel and a branch part branching into both shoulders of the wearer, and a connection height, connection width, or connection angle of a pair of upper connection bars mounted on the back panel member. A size adjustment device may be provided to allow changes.

In this case, the size adjustment device includes a guide bar mounted on the backboard member in the vertical direction, a slider slidably mounted on the guide bar, a rotator rotatably mounted on the slider about the x-axis in the forward direction of the wearer, and the rotator It may include an extender that is mounted to penetrate in the horizontal direction and is composed of overlapping pipe members and can be inserted or withdrawn to adjust the width.

Additionally, the upper connection bar may be connected to both ends of the extender of the size adjustment device.

Additionally, the wire pulling device may be mounted on each branch of the climbing member.

Additionally, the lower connection bar may be bent from the lower portion of the cam member of the auxiliary torque generating device toward the front of the wearer's thigh and may be bent toward the front of the thigh and connected to the thigh member of the thigh unit.

According to the worker's aid according to the present invention, it is possible to provide auxiliary torque in the hip joint area and auxiliary force for load when working with the wearer's luggage, and at the same time provide various degrees of freedom for rotation or bending of the upper body.

In addition, according to the worker's aid according to the present invention, the weight, volume, and cost can be minimized by using a non-electrical method, while the structure can be simplified.

In addition, according to the worker's aid according to the present invention, the load on the arm can be reduced through a wire traction device detachably mounted on the upper body unit, but since the wire traction device is not mounted in the form of an exoskeleton of the arm, loading and unloading work is possible. It can provide free movement of the arm that is most commonly used.

In addition, according to the worker's aid according to the present invention, it is provided with a size adjustment device, so that it can respond to the body sizes of various workers and minimize the size when stored.

Figure 1 shows a side view of a worker holding box-shaped baggage to explain the concept of an assistive device for workers according to the present invention.
Figure 2 shows a perspective view of one embodiment of a worker's aid according to the invention.
Figure 3 shows a front perspective view and a rear perspective view of a wearer wearing a worker's aid according to the present invention.
4 to 6 show a side view of a process in which a wearer wearing an assistive worker according to the present invention lifts baggage from the floor.
Figures 7 and 8 show a rear view and a side view of the worker's aid according to the present invention from which wearing members such as suits and bands have been removed.
Figure 9 shows a rear view of the upper body unit of the worker's aid according to the present invention.
Figure 10 shows a cross-sectional view of the width direction size adjustment state of the extender constituting the size adjustment device of the worker's aid according to the present invention.
Figure 11 shows an outer side view and an inner side view of the connection unit of the worker's aid according to the present invention.
Figure 12 shows a perspective view of the operating state of the auxiliary torque generator that constitutes the connection unit of the worker's assistant according to the present invention.
Figure 13 shows a perspective view and a cross-sectional view of the auxiliary torque generator that constitutes the connection unit of the worker's assistant according to the present invention.
Figure 14 shows a perspective view and a cross-sectional view of the femoral unit of the worker's aid according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure will be thorough and complete, and so that the spirit of the invention can be sufficiently conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification.

Figure 1 shows a side view of a worker (w) holding box-shaped baggage (B) to explain the concept of an assistive device for workers according to the present invention.

Loading and unloading of baggage (B) such as parcels involves repeatedly loading and unloading a large number of baggage (B) between the conveyor belt and the delivery vehicle, which is very tiring. In addition, when loading or unloading baggage (B), the position of baggage (B) and the weight and shape of baggage (B) are characterized in that they vary.

As shown in Figure 1, when a worker carries baggage B and performs loading and unloading operations, the worker's arms are directed forward and the center of gravity (g) of the baggage B is located in front of the worker. Therefore, compared to the state in which the worker is upright without the baggage (B), the weight of the baggage (B) and the moment due to the weight of the baggage (B) are transmitted through the worker's arms, shoulders, spine, and lower body including the hip and knee joints. is applied to.

Therefore, the present invention reduces the fatigue of the worker's arm by applying a gravity compensation mechanism for the arm using a spring (electric actuator is also possible) to compensate for the weight of the arm and baggage (B), and provides a load transfer structure to provide a load transfer structure. Physical burden can be minimized by providing a path for the load in (B) to be transmitted to the ground through an orthosis in addition to the worker's spine, waist, and legs. This will be described in detail with reference to Figure 2 below.

Figure 2 shows a perspective view of one embodiment of the worker's aid (1) according to the present invention, Figure 3 shows a front perspective view and a rear perspective view of a wearer wearing the worker's aid (1) according to the present invention, 4 to 6 show a side view of a process in which a wearer wearing the worker's aid 1 according to the present invention lifts baggage B from the floor.

The worker's aid (1) according to the present invention includes an upper body unit (100) mounted on the wearer's upper body; A pelvic unit (300) worn on the wearer's pelvis; A thigh unit 400 worn on the wearer's thigh; And, a connection unit 200 for connecting the upper body unit 100, the pelvic unit 300, and the thigh unit 400, and providing auxiliary torque to assist the wearer in extending or flexing the hip joint. It can be configured as follows.

In other words, the worker's aid (1) according to the present invention provides auxiliary torque when the worker unfolds or extends the upper and lower body in the process of lifting baggage (B), thereby reducing the wearer's load burden and assisting muscle strength. You can.

Therefore, the worker's aid (1) according to the present invention includes an upper body unit (100), a pelvic unit (300), and a thigh unit (400) that are respectively mounted on the wearer's upper body, pelvis, and thighs, and the upper body unit (100) , the pelvic unit 300 and the thigh unit 400 are connected using the connection unit 200 to provide a deployment or extension assistance force or Auxiliary torque can be provided.

The connection unit 200 provides an auxiliary force or auxiliary torque for the deployment or extension of the upper body unit 100 and the thigh unit 400 around the pelvic unit 300 when a worker lifts baggage (B). To this end, the pelvic unit 300 is provided with an auxiliary torque generator 210 mounted on both sides, a pair of upper connection bars 230 connecting the auxiliary torque generator and the upper body unit 100, and the It includes a pair of lower connection bars 250 that connect the auxiliary torque balance generator and the lower body unit, and the auxiliary torque generator 210 connects the upper connection bar 230 and the lower connection bar 250. It may be provided to generate restoration torque when the angle is reduced, for example, when the worker lifts baggage (B), and is installed on the pelvic unit 300, which is installed on the pelvis, which is the rotation center of the worker's upper and lower body. Can be installed.

In order to transmit the auxiliary torque generated by the auxiliary torque generator 210 to the upper and lower body, the auxiliary torque generator 210, the upper body unit 100, and the thigh unit 400 of the connection unit 200 are used. Connect to each connection bar (230, 250).

Specifically, the connection unit 200 includes a pair of upper connection bars 230 connecting each of the auxiliary torque generating devices 210 and the rear of the upper body unit 100, each of the auxiliary torque generating devices, and the It may include a pair of lower connection bars 250 connecting the front of the thigh unit 400.

Each connecting bar (230, 250) has a rigidity capable of transmitting the auxiliary torque or auxiliary force provided by the auxiliary torque generator 210, and one end of each connecting bar (230, 250) is located on both sides of the pelvis. It is connected to the auxiliary torque generator 210, and the other end may have a bent shape to reach the rear of the upper body and the front of the thigh, respectively.

In addition, the pelvic unit 300 includes a pair of pelvic members 310 that surround both sides of the wearer's pelvis, and the auxiliary torque generator 210 is capable of rotating in a predetermined range outside each pelvic member 310. can be combined.

A description of the structure of the auxiliary torque generator 210 being rotatably coupled to the outside of each pelvic member 310 in a predetermined range will be described later.

As shown in FIG. 2, the pelvic unit 300 is equipped with a belt that can be worn on the wearer's waist and pelvis to connect the pelvic member 310.

In addition, the worker's aid (1) according to the present invention includes the upper body unit (100) comprising a back panel (110) that includes a back panel (113) that surrounds the wearer's back and a branch part (111) that branches off to both shoulders of the wearer. ) may include.

As shown in FIG. 2, the back panel member 110 is mounted on the wearer's back area, and a suit member (s) surrounding the wearer's chest may be mounted on the back board member 110.

The back plate member 110 may be made of resin or carbon-reinforced plastic, and the chute member s may be made of a flexible fabric or sheet material.

In addition, the auxiliary torque generator 210 is mounted on the back plate member 110 and has a traction wire wound around it to provide traction force for pulling the glove-shaped hand support portion (g) mounted on the wearer's hand. A traction device 130 may be further provided.

The back panel member 110 includes a back panel 113 that surrounds the wearer's back and a branch part 111 that branches off to both shoulders of the wearer, and the wire traction device 130 has two branch parts 111. Can be provided one by one.

The wire traction device 130 includes a housing, an elastic member within the housing, and a traction wire (w) connected to the elastic member, and the traction wire (w) may be connected to a glove-shaped hand support portion (g).

Accordingly, the traction wire (w) is configured to traction the hand support portion (g), and as shown in FIGS. 4 to 6, the auxiliary torque generating device is used when the wearer lifts the baggage (B) on the floor. (210) provides auxiliary torque for extension or deployment of the hip joint through the connection bars (230, 250), and the wire traction device (130) connects the hand support portion (g) to the upper body unit (w) through the traction wire (w). By towing in the direction of 100), the muscular burden caused by baggage (B) can be alleviated.

In addition, the auxiliary torque generating device 210 and the wire pulling device 130, in addition to the operation of the worker lifting the baggage B located on the ground as shown in FIGS. 4 and 5, as shown in FIG. 6 , Even when standing while holding baggage (B), the moment when the upper body tilts due to the baggage (B) and the gravitational load on the hands can be greatly reduced, and the wearer holding the baggage can avoid any accident while walking. Even when walking in the stance phase, which is a process in which the angle of the upper body and thighs is increased while the wearer's weight is on it from the moment the plantar surface of the foot touches the ground to the moment it separates, it increases the wearer's muscle strength by providing assistive force for hip joint deployment. Or, it can assist with physical strength burden.

Figures 7 and 8 show a rear view and a side view of the worker's aid (1) according to the present invention from which wearing members such as suits and bands have been removed.

The upper body unit 100 constituting the worker's aid (1) according to the present invention includes, in addition to the above-described wire traction device 130 provided to reduce the load of baggage (B) applied to the hands and arms, the upper body unit 100. A size adjusting device 150 may be provided that is mounted on the back plate member 110 of 100 and allows changing the connection height, connection width, or connection angle of the pair of upper connection bars 230.

As shown in FIG. 7, the upper connection bar 230 may be connected to both sides of the size adjusting device 150.

The size adjusting device 150 includes a guide bar 151 mounted on the backboard member in the vertical direction, a slider 152 slidably mounted on the guide bar 151, and a slider 152 that moves in the forward direction of the wearer. A rotator 153 rotatably mounted around the It may be configured to include an extender 154 whose width is adjustable.

The guide bar 151 may be provided vertically across the center of the back plate member 110. For example, the guide bar 151 may be an LM guide, and the slider 152 may be an LM block. It can be.

The guide bar 151 can change the position of the extender 154 equipped with the upper connecting bar 230 according to the length of the wearer's upper body, and minimizes the size of the brace even when it is not in use, making it easy to store. It can increase.

That is, the width and connection position of the upper connection bar 230 can be changed depending on the size of the wearer's body and the ratio of the upper body and lower body.

As shown in Figures 8 and 9, the slider 152 is mounted to slide up and down along the guide bar 151 while being penetrated by the guide bar 151, and is attached to the slider 152. The rotator 153 may be mounted to rotate around the x-axis.

Additionally, an extender 154 may be installed through the rotator 153. Specifically, the extender 154 may be configured as an overlapping pipe that penetrates the rotator 153 in the horizontal direction and can be inserted or withdrawn to adjust its width.

Therefore, the rotator 153 can rotate in the x-axis direction, which is the front direction, with the extender 154 penetrated, and can respond to the tilt of the upper body of the worker wearing the brace in the x-axis direction, allowing various operations. As a result, the worker's sense of unfamiliarity and discomfort with the brace can be minimized.

In addition, the extender 154 is mounted to penetrate the rotator 153 in the horizontal direction, and a pair of overlapping pipe members equipped with ends of each upper connecting bar 230 are each pulled by an elastic member. It is configured to be inserted or withdrawn so that the width can be adjusted, and the entire length of the overlapping pipe members is changed according to the size of the wearer's upper body, thereby reducing the gap between the upper connecting bars 230 mounted on the ends of each pipe member. It can be configured to be adjustable, and the size of the aid can be kept to a minimum even when storing the aid.

The structure in which an elastic member (see 1543 in FIG. 10) is provided inside the extender 154 to provide elastic restoring force in the process of adjusting the gap between the upper connection bars 230 connected to both ends will be described later.

9 and 10 show a rear view of the upper body unit 100 of the worker's aid 1 according to the present invention.

In addition, two wire traction devices 130 as utility devices mounted on the upper body unit 100 may be provided in the branch portion 111 of the back plate member 110 as described above.

The wire traction devices 130 each have a housing 131, and within each housing, the traction wire w can be elastically wound and stored by an elastic member (not shown).

And, the traction wire (w) accommodated in the wire traction device 130 is in the form of a detachable clip so that it is connected to the hand support part (g) worn on the wearer's hand via the branch part 111 of the back panel member 110. A wire guide member 137 composed of may be provided.

That is, the wire guide member 137 may be provided to guide the placement path of the traction wire (w) in order to prevent the worker's shoulder from being chafed by the traction wire (w), and the wire guide member 137 ) may be detachably mounted on the branch portion 111 of the back plate member 110 in the form of a clip.

In addition, a wire guide pipe 138 for disposing the traction wire (w) wound within the housing of the wire traction device 130 to the wire guide member 137 is provided, so that the wire guide through which the traction wire (w) passes is provided. Direct friction with the member 137 can be minimized.

In addition, band connection parts 170 may be provided on the left and right sides of the band connection part 115 below the back plate member 110 of the upper body unit 100.

And the traction wire passing through the hand support part can be fixed to the anchor part 1308 provided on the wire guide member 137.

Figure 10 shows a cross-sectional view of the width direction size adjustment state of the extender 154 constituting the size adjustment device 150 of the worker's aid 1 according to the present invention. Specifically, Figure 10(a) shows a cross-sectional view of the extender 154 with the gap between the upper connection bars 230 minimized, and Figure 10(b) shows a cross-sectional view of the extender 154 with the gap between the upper connection bars 230 maximized. A cross-sectional view of the extender 154 is shown.

The worker's aid (1) according to the present invention has a structure whose size is variable depending on the wearer's body size, etc.

Among the wearer's body sizes, the width of the torso and the height of the hip joint may vary depending on the gender, age, or individual differences of the wearer. Therefore, the worker's aid (1) according to the present invention has an upper part connected to the upper teeth unit corresponding to the body size of the wearer. The size adjustment device 150 described with reference to FIG. 7 may be provided to adjust the spacing and connection position of the connection bar 230.

The size adjustment device 150 is provided with a vertical guide bar 151 and an extender 154 in the form of an overlapping pipe whose width is adjustable, so that the worker's aid (1) can be adjusted according to the width of the wearer's torso and the position of the hip joint. Width and height can be adjusted.

The extender 154 is configured in the form of overlapping pipes, and an upper connector 230 is mounted on each end of each pipe member via a connector mounting member 1549, corresponding to the width of the wearer's torso. The longitudinal width can be adjusted, and the height of the upper connection bar 230 mounted on the extender 154 is adjusted by adjusting the height of the extender 154 in the upper body unit 100, ultimately leading to the upper connection bar 230 ) The height of the auxiliary torque generator 210 connected to the can be adjusted.

As shown in Figure 10, the extender 154 constituting the size adjusting device 150 is provided with an elastic member 1543 inside the overlapping pipe members 1541a and 1541b, and the pipe members 1541a and 1541b Two elastic members are provided in a row inside, and one end of each elastic member 1543 is connected to a fixing member 1542 fixed to the rotator 153 side inside the pipe members 1541a and 1541b, and each elastic member 1543 is connected to the other end. It may be connected to a finishing member 1547 that finishes the end of the pipe member.

In addition, the pair of overlapping pipe members (1541a, 1541b) has a ring-shaped pipe-type friction reduction member ( 1544).

The friction reduction member 1544 may be made of a material that reduces friction between the frictionable inner circumferential surfaces when inserting and withdrawing the pipe members 1541a and 1541b in response to the wearer's body size. The friction reducing member 1544 may be made of, for example, Teflon resin.

A structure in which a pair of finishing members 1547 are connected to both ends of an elastic member provided inside the pipe members 1541a and 1541b can be configured. As shown in FIG. 10, the pipe member 1541 Two elastic members are provided in a row inside, one end of each is connected to a fixture 1542 fixed inside the pipe member 1541, and the other end of each is connected to the coupler 1545 with the other end of the upper connecting bar 230. It may be a connected structure.

Figure 11 shows an outer and inner side view of the connection unit 200 of the worker's aid (1) according to the present invention, and Figure 12 shows the connection unit 200 of the worker's aid (1) according to the present invention. It shows a perspective view of the operating state of the auxiliary torque generating device 210, and Figure 13 is a perspective view and a cross-sectional view of the auxiliary torque generating device 210 constituting the connection unit 200 of the worker's assistant (1) according to the present invention. shows.

As shown in FIG. 11(a), the worker's aid 1 according to the present invention includes a pair of pelvic members 310 that surround both sides of the wearer's pelvis, and the auxiliary torque generating device 210 is connected to the pelvis. It is mounted on the outside of the member 310 and can provide auxiliary torque when the wearer extends or flexes the hip joint.

As shown in FIG. 12, the auxiliary torque generator 210 is rotatably mounted on a housing 212 on which the upper connecting bar 230 is mounted, and a rotating shaft 218 eccentric with the housing 212. A cam member 219 is provided with a curved rolling surface 219s on the outer peripheral surface and is connected to the lower connecting bar 250, and is driven to roll along the rolling surface 219s of the cam member 219 and the upper connecting bar ( A cam roller 217 connected to the 230) side, an elastic member mounted in a compressed state within the housing 212 to propel the cam roller 217 in the direction of the rolling surface 219s of the cam member 219. (214) and a mount member 215 on which the elastic member 214 is supported at one end and the cam roller 217 is rotatably mounted on the other end.

The cam member 219 is rotatably mounted on the housing 212 and the eccentric rotation axis 218, has a curved rolling surface 219s on its outer peripheral surface, and can be connected to the lower connecting bar 250. Accordingly, the lower connection bar 250 can be rotatably coupled to the auxiliary torque generator 210 with respect to the eccentric rotation axis 218.

In addition, it is mounted on the upper connecting bar 230 and the housing 212, is rolled along the rolling surface 219s of the cam member 219, and is provided with a cam roller 217 to support the cam member 219. It can be driven along the cloud surface (219s).

The cam roller 217 is supported and mounted by the elastic force of the elastic member 214 inside the housing on which the upper connecting bar 230 is mounted, but is not directly connected to the elastic member 214, but is attached to one end of a separate mounting member 215. It is mounted on, and one end of the elastic member 214 may be supported on the other end of the mount member 215.

As shown in FIG. 12 or 13, the elastic member 214 may be a coil spring mounted in a compressed state in the longitudinal direction of the housing, and a fastening shaft 213 is provided inside the elastic member 214. One end of the fastening shaft 213 may pass through and be fastened to the mount member 215 .

The elastic member 214 may be a coil spring with a linear elastic coefficient or stiffness of about 10.0 N/M to 30.0 N/M.

A pressure plate 213p is provided at the other end of the fastening shaft 213, and the pressure plate 213p can generate elastic force by compressing or extending the elastic member.

The state shown in FIG. 12(a) is a state in which the wearer shown in FIG. 5 lifts the baggage B from the floor. In this case, the cam roller 217 mounted on the housing is on the rolling surface of the cam member 219. It is displaced along (219s), and then the distance between the cam roller 217 and the eccentric rotation axis 218 in the housing increases and the elastic member contracts. Accordingly, the elastic repulsion force of the elastic member and the resulting auxiliary torque may be provided in a direction where the distance between the cam roller 217 and the eccentric rotation axis 218 within the housing is reduced.

Therefore, the elastic force of the elastic member ultimately rotates the housing on which the cam roller 217 is mounted in the direction of the wearer's upright position shown in FIG. 6 so that the cam roller 217 is in the state shown in FIG. 12(b). The force is converted into auxiliary torque, and this auxiliary torque can assist the wearer's hip extension or extension motion.

Therefore, the elastic force of the elastic member or the auxiliary torque generation section is determined by changing the position of the rotation axis for fastening the cam member 219 and the housing on the cam member 219 or the distance from the cam roller 217. You can.

That is, as shown in Figure 12 (a), the process of the wearer lifting the baggage (B) may be the point at which the greatest muscular load is generated on the wearer, so the upper connection bar 230 and the lower connection bar 250 ), the elastic member is compressed the most at an angle of ), and as shown in Figure 12(b), when the wearer has fully lifted the baggage (B), the muscle force load is relatively reduced, so the elastic member is compressed. The position of the rotation axis on the cam member 219 can be selected to minimize this.

Figure 12 illustrates the task of lifting baggage (B) on the floor as an example, but even in the type of work, for example, lifting baggage (B) from a high place and placing it on the floor, the resistance in the direction of hip joint flexion is By providing auxiliary torque, the burden on workers can be reduced.

As shown in FIG. 13, the mount member 215 on which the cam roller 217 is mounted is in a state in which the elastic member is elastically supported at the rear, and one end of the fastening shaft 213 is shown in FIG. 13 (b). As described above, the structure is screwed to the fastening hole 215c of the mount member 215 shown in ) and the other end is connected to the pressure plate 213p that supports the other end of the elastic member within the housing.

In addition, the upper connecting bar 230 is connected to the housing side of the auxiliary torque generating device 210, and the lower connecting bar 250 is connected to the cam member 219 side of the auxiliary torque generating device 210. You can.

The lower connecting bar 250 may be directly connected to the cam member 219, but in order to allow adduction or abduction of the thigh, the cam member 219 is provided with an internal and external rotation member 220 that is axially coupled to the internal and external axis. It may be connected to the cam member 219 through a medium.

The upper end of the upper connecting bar 230 is bent from the housing of the auxiliary torque generator 210 to the rear of the wearer's upper body and connected to the upper body unit 100, and the lower end of the upper connecting bar 230 is connected to the upper body unit 100. It may be configured to be mounted on the housing 212 of the auxiliary torque generating device 210 and be fixed to the auxiliary torque generating device 210 and rotated together.

Figure 14 shows a perspective view and a cross-sectional view of the thigh unit 400 of the worker's aid 1 according to the present invention.

As shown in FIG. 8, the lower connecting bar 250 is bent from the lower portion of the cam member 219 of the auxiliary torque generating device 210 toward the front of the wearer's thigh to connect the thigh member 410 of the thigh unit 400. ) can be configured to be connected to.

The reason why the thigh member 410 supports the front of the wearer's thigh is because the auxiliary torque provided by the auxiliary torque generator 210 is high. This is to facilitate power transmission to the thighs, etc. by providing auxiliary force or auxiliary torque to the wearer's hip joint during extension or unfolding movements in a flexed state.

Specifically, the thigh unit 400 is attached to the thigh member 410 with the thigh member 410 surrounding the front of the wearer's thigh and the end of the lower connecting bar 250 accommodated on the outer peripheral surface of the thigh member 410. It may be configured to include a mounted cap member 430, but the cap member 430 and the thigh member 410 may also be configured as an integrated piece.

The end of the lower connecting bar 250 within the cap member 430 may be mounted to allow a certain degree of movement.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art may make various modifications and changes to the present invention without departing from the spirit and scope of the present invention as set forth in the claims described below. It will be possible to implement it. Therefore, if the modified implementation basically includes the elements of the claims of the present invention, it should be considered to be included in the technical scope of the present invention.

1: Worker's aid
100: thigh unit
200: connection unit
300: Pelvic unit
400: thigh unit

Claims (12)

An upper body unit mounted on the wearer's upper body;
A pelvic unit worn on the wearer's pelvis;
A thigh unit worn on the wearer's thigh;
a connecting unit connecting the upper body unit, the pelvic unit, and the thigh unit, and providing auxiliary torque to assist the wearer in extending or flexing the hip joint; and,
An assistive device for workers including a wire traction device with a traction wire wound to provide traction force for pulling a glove-shaped hand support portion mounted on the upper body unit and mounted on the wearer's hand. According to paragraph 1,
The connection unit includes an auxiliary torque generator mounted on the pelvic unit; It includes a pair of upper connection bars connecting the auxiliary torque balance device and the upper body unit and a pair of lower connection bars connecting the auxiliary torque balance device and the thigh unit,
The auxiliary torque generator is an assistive device for workers, characterized in that it generates restoration torque when the connection angle of the upper connection bar and the lower connection bar decreases. According to paragraph 1,
The pelvic unit includes a pair of pelvic members surrounding both sides of the wearer's pelvis, and the auxiliary torque generator constituting the connection unit is mounted on the outside of each pelvic member to be rotatable in a predetermined range. Aids for workers. According to paragraph 2,
The auxiliary torque generator includes a housing, a cam member rotatably mounted on a rotating shaft eccentric with the housing, a curved rolling surface on the outer circumferential surface, a cam member connected to the lower connecting bar, and a rolling drive along the rolling surface of the cam member. A cam roller connected to the upper connecting bar side, an elastic member mounted in a compressed state within the housing to propel the cam roller in the direction of the rolling surface of the cam member, and the elastic member are supported at one end and at the other end. An assistive device for workers, comprising a mount member on which the cam roller is rotatably mounted. According to paragraph 2,
An aid for workers, characterized in that the elastic member is a coil spring compressible in the longitudinal direction of the housing. According to paragraph 2,
The upper connection bar is connected to the housing side of the auxiliary torque generator,
An assistive device for workers, characterized in that the lower connection bar is connected to the cam member side of the auxiliary torque generating device. According to paragraph 2,
The upper connection bar is bent from the housing of the auxiliary torque generator to the rear of the wearer's upper body and connected to the upper body unit. According to paragraph 2,
The upper body unit includes a back panel member including a back panel that surrounds the wearer's back panel and a branch part branching into both shoulders of the wearer, and is mounted on the back panel member to change the connection height, connection width, or connection angle of the pair of upper connection bars. An assistive device for workers, characterized in that it has a size adjustment device that allows for it. According to clause 8,
The size adjustment device includes a guide bar mounted on the backboard member in the vertical direction, a slider slidably mounted on the guide bar, a rotator rotatably mounted on the slider about the x-axis in the front direction of the wearer, and a horizontal direction of the rotator. An extender that is mounted through and is made of overlapping pipe members and can be inserted or withdrawn to adjust the width. According to clause 9,
An aid for workers, characterized in that the upper connection bar is connected to both ends of the extender of the size adjustment device. According to clause 8,
An aid for workers, characterized in that the wire traction device is mounted on each branch of the climbing member. According to paragraph 2,
The lower connection bar is bent from the lower part of the cam member of the auxiliary torque generating device toward the front of the wearer's thigh, is bent toward the front of the thigh, and is connected to the thigh member of the thigh unit.

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