JP7361663B2 - assist equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an assist device that is worn by a worker and used to assist the worker.

For example, when a worker is working on crops in the field (collecting berries, pulling weeds, etc.) or caring for a person in need of care who is sleeping in bed, the worker should lean forward with the upper body leaning forward. There is some maintenance involved, which puts a burden on the operator.

An assist device that reduces the burden placed on a worker by maintaining a forward leaning posture is disclosed in Patent Document 1.
The assist device of Patent Document 1 is provided with a main body that is attached to the upper body of a worker, and a leg arm that is swingably supported around a support fulcrum at the bottom of the main body. A spring is provided that biases the portion upwardly. The worker attaches the main body to his back, the leg arms to his thighs, and wears the assist device.

When a worker wearing an assist device leans forward, the main body is supported by the leg arms (the worker's thighs), and the main body supports the worker's upper body, allowing the worker to The burden on the lower back is reduced.

JP2017-93505A

When a worker performs work while maintaining a forward-leaning posture, apart from putting strain on the worker's lower back, the worker's neck also supports the worker's head to prevent it from moving downward, making it difficult to perform the work. This puts strain on the person's neck. Thereby, it is desired to reduce the burden on the neck of the worker when the worker performs the work while maintaining a forward leaning posture.

SUMMARY OF THE INVENTION An object of the present invention is to provide an assist device that can reduce the burden on the neck of a worker when the worker works while maintaining a forward leaning posture.

The assist device of the present invention includes a main body that is attached to the upper body of a worker, and a main body that is provided on the main body to support the worker's head when the worker's upper body is in a forward-leaning posture. and a head support section that is capable of preventing downward displacement of the worker's head and that allows upward movement of the worker's head and lateral movement about an axis along the worker's spine. , the head support section includes a support section extending upward from a portion of the main body corresponding to the worker's back, and a connection section attached to the worker's head and the support support section. The support section has an upright posture extending upward from a portion of the main body corresponding to the back of the worker, and a standing posture extending downward from the portion of the main body corresponding to the back of the worker. The posture can be changed around the axis along the left-right direction from a downward posture extending to the side.

According to the present invention, the worker attaches the main body portion to the upper body of the worker, and wears the assist device such that the worker's head is supported by the head support portion.
In this state, if the worker takes a forward leaning posture with the upper body of the worker leaning forward, even if the worker's head tries to move downward, the worker's head will not be supported by the head support section. , is supported by the main body (upper body of the worker) via the head support section, thereby preventing downward displacement of the worker's head. This reduces the burden on the worker's neck.

According to the present invention, while the worker wearing the assist device is leaning forward, the worker is allowed to lift his head or turn his head to the right or left. The worker can easily see ahead, above, to the right, and to the left, resulting in improved work efficiency.

According to the present invention, even if the worker's head tries to displace downward while the worker is wearing the assist device, the worker's head will be moved from the connection part of the head support part through the support part. It is supported by the main body (the upper body of the worker) and prevents the worker's head from moving downward.

According to the present invention, when the worker is wearing the assist device, the head support section (the support section and the connecting section) is connected to the worker's head from the back side of the worker. The operator's field of vision is less likely to be narrowed due to the head support becoming difficult to enter the field of view.

In the present invention, it is preferable that the connecting portion is a flexible connecting belt.

According to the present invention, the connection part of the head support part that is attached between the worker's head and the column part of the head support part is a flexible connection belt, so that the worker can A configuration that allows lifting the head and turning the head to the right or left can be easily obtained by means of the connection part (connection belt) of the head support.

In the present invention, it is preferable that a hat connected to the connecting part is provided, and the connecting part can be attached to the head of the worker by putting the hat on the head of the worker.

According to the present invention, by a simple action of the worker putting on the hat connected to the connection part of the head support part, the head can be moved between the worker's head and the column part of the head support part. The connection part of the support part can be easily attached.

The assist device of the present invention includes a main body that is attached to the upper body of a worker, and a shoulder that is provided on the main body and into which the arm and shoulder of the worker are inserted, so that the main body is attached to the upper body of the worker. and a belt provided on the main body, which is capable of preventing downward displacement of the worker's head by supporting the worker's head when the worker's upper body is in a forward-leaning posture; and a head support section that allows the worker to move upwardly and laterally about an axis along the spine of the worker, and the head support section allows the worker's body to move upwardly and laterally about an axis along the spine of the worker. It is attached to the shoulder belt so as to be located at a portion corresponding to the chest, and supports the worker's chin from below, thereby supporting the worker's head and displacing the worker's head downward. It is possible to prevent

According to the present invention, the worker attaches the main body portion to the upper body of the worker, and wears the assist device such that the worker's head is supported by the head support portion.
In this state, if the worker takes a forward leaning posture with the upper body of the worker leaning forward, even if the worker's head tries to move downward, the worker's head will not be supported by the head support section. , is supported by the main body (upper body of the worker) via the head support section, thereby preventing downward displacement of the worker's head. This reduces the burden on the worker's neck.
According to the present invention, while the worker wearing the assist device is leaning forward, the worker is allowed to lift his head or turn his head to the right or left. The worker can easily see ahead, above, to the right, and to the left, resulting in improved work efficiency.
According to the present invention, even if the worker's head tries to displace downward while the worker is wearing the assist device, the worker's chin is supported by the head support, and the worker's chin is supported by the head support. It is supported by the main body (the upper body of the worker) and prevents the worker's head from moving downward.

According to the present invention, when the worker is wearing the assist device, the portion of the main body portion corresponding to the worker's chest is close to the worker's chin, so that the head support portion is configured compactly.
In the present invention, it is preferable that the head support section includes a chest pad attached to the shoulder belt, and a receiving section that is attached to the chest pad and supports the chin of the worker.
In the present invention, it is preferable that the chest pad is attached to the shoulder belt so as to be located between the chest of the worker and the shoulder belt.
In the present invention, it is preferable that the receiving portion is removable from the chest pad.

In the present invention, a leg support part is provided on the main body and can support the upper body of the worker in a forward leaning posture by supporting the main body against the worker's thighs. suitable.

According to the present invention, when the worker leans forward while wearing the assist device, in addition to the worker's head being supported by the head support part, the worker's upper body is supported by the main body part and supported by the worker's thighs via the leg support part, reducing the burden on the worker's lower back.

FIG. 3 is a right side view of the worker wearing the assist device. FIG. 3 is a rear view of the worker wearing the assist device. FIG. 2 is a perspective view of an assist device. FIG. 7 is a perspective view of an assist device in a first alternative embodiment of the invention. FIG. 7 is a front view of the vicinity of the head support section in a first alternative embodiment of the invention.

The assist device of the present invention is shown in FIGS. 1-5. In the embodiment of the present invention, when the worker is wearing the assist device, the front side as seen from the worker is the "front", the rear side is the "rear", the upper side is the "top", and the direction is the bottom. The side is "bottom," the right side is "right," and the left side is "left."

(Overall configuration of assist device)
As shown in FIGS. 1, 2, and 3, the assist device includes a main body 1 that is attached to the upper body of a worker, and right and left arm parts that extend upward from the top of the main body 1 and extend forward. 2, right and left leg support parts 3 provided at the lower part of the main body part 1, and a head support part 21 provided in the main body part 1.

(Main body)
As shown in FIGS. 1, 2, and 3, the main body 1 includes right and left vertical frames 6, a support plate 7, an attachment belt 4, a shoulder belt 5, a connection belt 22, and the like.

Right and left vertical frames 6 are provided along the vertical direction, and a support plate 7 is connected across the right and left vertical frames 6 to form a frame-shaped member. An attachment belt 4 is attached to the lower part of the support plate 7, and right and left shoulder belts 5 are attached to the upper and lower parts of the support plate 7. A connecting belt 22 is attached to the upper portions of the right and left shoulder belts 5, and the connecting belt 22 can be separated from side to side by a buckle member in the middle portion, and its length can be adjusted.

The worker puts the worker's arms and shoulders into the shoulder belt 5, connects the connection belt 22, and wraps and fixes the attachment belt 4 around the worker's waist, so that the main body 1 can be attached to the worker's waist. Can be attached to the upper body. In the main body 1, the vertical frame 6 and the support plate 7 correspond to the back of the worker, and the shoulder belts 5 and the connecting belt 22 correspond to the chest of the worker.

(Leg support part)
As shown in FIGS. 1, 2, and 3, the leg support portion 3 includes a base portion 10, a transmission case 11, an operating arm 12, a leg belt 13, and the like. A base 10 is supported by the lower part of the support plate 7 so that its mounting position can be changed in the left-right direction, and a transmission case 11 is connected to the outer end of the base 10 in a forward direction.

An operating arm 12 is swingably supported around an axis P1 along the left-right direction of the front portion of the transmission case 11, and a wide belt-shaped leg belt 13 is attached to the operating arm 12. A transmission mechanism (not shown) composed of a plurality of spur gears is provided inside the transmission case 11, and an electric motor (not shown) is provided inside the base 10. The operating arm 12 is oscillated around the axis P1 via.

The worker wraps the leg belt 13 around the worker's thigh and attaches the leg belt 13 to the worker's thigh using a hook-and-loop fastener (not shown) (Velcro tape (registered trademark)). When the worker attaches the main body part 1 to the worker's upper body, the right leg support part 3 (transmission case 11) is located on the right side with respect to the worker's waist, and the right leg support part 3 (transmission case 11) is located on the left side with respect to the worker's waist. The left leg support part 3 (transmission case 11) is located at .

(lift device)
As shown in FIGS. 1 and 2, in the main body 1, a lifting device 17 is attached to the upper part of the rear surface of the support plate 7, a control device 8 is attached to the upper and lower intermediate portions of the rear surface of the support plate 7, and a battery 9 is attached to the lower part of the rear surface of the support plate 7.

The lifting device 17 includes an up-and-down transmission case 25 that houses a transmission mechanism (not shown), a support case 26 connected laterally to the upper part of the transmission case 25, and an electric motor connected laterally to the lower part of the transmission case 25. 27. Four rotating bodies (not shown) are provided inside the support case 26 and are rotatably supported around an axis extending in the left-right direction.

As shown in FIGS. 2 and 3, two right wires 18 and two left wires 19 are provided. The outer support part 15 is attached to the upper part of the support plate 7, the ends of the outer parts 18b and 19b of the wires 18 and 19 are connected to the outer support part 15, and the inner parts 18a and 19a of the wires 18 and 19 are connected to the support case. It is connected to each of the four rotating bodies inside 26.

The electric motor 27 is operated by the control device 8 . The power of the electric motor 27 is transmitted to the rotating body inside the support case 26 via the transmission mechanism inside the transmission case 25, and the rotating body is rotationally driven to the winding side and the feeding side.

(Arm part)
As shown in FIGS. 1, 2, and 3, the upper portions of the right and left vertical frames 6 extend diagonally upward and diagonally forward beyond the right and left shoulders of the worker. This is arm part 2 on the left.

A support member 16 is attached to the upper end of the arm portion 2, a pulley (not shown) is rotatably supported by the support member 16, and the support member 16 is provided with an outer support portion 16a. Ends of outer wires 18 b and 19 b of wires 18 and 19 are connected to outer support portion 16 a of support member 16 .

The inner wires 18a, 19a of the two right wires 18, 19 are hung on the pulley of the right support member 16 and extended downward, and the inner wires 18a, 19a of the two right wires 18, 19 are The right hand portion 20 is connected to the extending portion of the right hand portion 20 .

Inner wires 18a, 19a of the two left wires 18, 19 are hung on pulleys of the left support member 16 and extended downward; The left hand portion 20 is connected to the extending portion of the left hand portion 20 .

A rising operation switch 23 is provided on the right hand section 20, and a descending operation switch 24 is provided on the left hand section 20. Right and left harnesses 14 connected to the control device 8 are placed inside the right and left arm sections 2, and extend through the interior of the arm section 2 to the upper end of the arm section 2. A harness 14 comes out from the opening at the upper end of the arm part 2 and extends downward, and the right harness 14 is connected to the ascending operation switch 23, and the left harness 14 is connected to the descending operating switch 24. ing.

(Head support part)
As shown in FIGS. 1, 2, and 3, the head support section 21 has a support section 30 and a connection belt 31 (corresponding to a connection section).

Two support frames 28 are connected to the upper parts of the right and left vertical frames 6 so as to straddle the rear side of the lifting device 17, and the support frames 29 are connected to the upper and lower support frames 28. connected across.

A flat, vertically elongated column 30 is supported by the support frame 29 so as to be swingable up and down about an axis P2 along the left-right direction. Lock parts 29a and 29b are provided at the upper and lower parts of the support frame 29.

In the state shown in FIGS. 1, 2, and 3, the support section 30 is set in an upright position, a connecting pin (not shown) is attached between the support section 30 and the locking section 29a of the support frame 29, and the support section 30 is in an upright position. 30 is held in an upright position, and the support column 30 extends upward from a portion of the main body 1 that corresponds to the back of the worker.

A flexible connection belt 31 is provided, a loop-shaped connection fitting 32 is attached to one end of the connection belt 31, and a bolt-shaped connection fitting 33 is attached to the connection fitting 32. The connection belt 31 is attached to the support column 30 by attaching the connection fitting 33 to the attachment hole 30a of the support column 30.

A plurality of attachment holes 30a are provided in the column 30, and by changing the attachment holes 30a of the column 30 to which the connection fittings 33 are attached, the attachment position of the column 30 on the connection belt 31 can be changed vertically and horizontally. can do.

The other end 31a of the connection belt 31 is formed into a loop shape, and the cloth cap 34 is inserted into the loop-shaped end 31a of the connection belt 31, and attached to the end 31a of the connection belt 31. It is connected. An adjustment section 35 that can adjust the length of the connection belt 31 is provided in the middle of the connection belt 31.

The connection belt 31 is attached to the worker's head by putting the hat 34 on the worker's head while the worker attaches the main body 1 to the worker's upper body. 31 is attached across the worker's head and the support column 30.

When the worker does not use the head support section 21, the worker removes the connecting pin from the lock section 29a of the support frame 29, swings the support section 30 downward around the axis P2, and sets it in a downward posture. , a connecting pin (not shown) may be attached between the support portion 30 and the lock portion 29b of the support frame 29 to hold the support portion 30 in a downward position.
In this case, the operator may remove the connection fitting 33 from the support section 30 and remove the connection belt 31 and the cap 34 from the support section 30.

(Operation of leg support section and lifting device by control device)
As shown in FIGS. 1 and 2, the worker wearing the assist device holds the right and left hand parts 20 with his right and left hands, and thereby the worker can control the ascending operation switch 23 and the descending operation switch 24. It can be operated by pressing.

When the lift operation switch 23 is pressed, the operation arm 12 is moved by the electric motor in the leg support 3 while the lift operation switch 23 is pressed, as described in (Working form of assist device) described later. is operated to swing downward, and the worker's thigh is operated downward.

If the lift operation switch 23 is pressed after the operation arm 12 of the leg support part 3 is swung downward, the lift operation switch 23 While being pressed, the electric motor 27 rotates the rotating body in the lifting device 17 toward the winding side, and the inner wires 18a, 19a of the wires 18, 19 are wound around the rotating body, and the hand part 20 is rotated. Operated to rise.

When the lowering operation switch 24 is pressed, while the lowering operation switch 24 is pressed, the electric motor 27 rotates the rotary body in the elevating device 17 toward the feeding side, and the inner 18a of the wires 18, 19, 19a is let out from the rotating body, and the hand portion 20 is operated to descend.

When the push operation of the ascending operation switch 23 and the descending operating switch 24 is stopped, the electric motor 27 in the elevating device 17 is stopped.
The electric motor 27 is provided with an electromagnetic brake (not shown). The electromagnetic brake automatically enters a released state when the electric motor 27 is activated, and automatically enters a braking state when the electric motor 27 is stopped or de-energized.

As a result, when the electric motor 27 is stopped, the inner wires 18a and 19a of the wires 18 and 19 are not paid out from the lifting device 17, and even if the weight of the baggage is applied to the hand portion 20, the hand portion 20 is lowered. Never.

In the leg support portion 3, when the electric motor is in a stopped state, the electric motor is in a freely rotating state. When the worker walks, or when the worker bends his or her lower back downward or lowers the lower back by bending the knees, the operating arm 12 swings to follow the thighs of the worker. , the operator's movements are not obstructed.

(Working form of assist device)
For example, when placing cargo placed on a pallet or the floor onto a high shelf or truck bed, the worker may bend down at the waist or bend the knees to drop the cargo, causing the worker to place the cargo on the pallet or floor. hold it in your hand. Next, while holding the load with their hands extended downwards, the worker stretches their waist upward or stands up, then lifts the load with their hands and places it on a high shelf or on the bed of a truck. The condition is assumed.

When a worker wearing an assist device performs the above-mentioned work, the leg support section 3 and the lifting device 17 are activated by the control device 8 based on the worker's push operation of the ascending operation switch 23 and the descending operating switch 24. The following describes the state in which this occurs.

As shown in FIGS. 1 and 2, if the operator does not push and operate both the raising operation switch 23 and the lowering operation switch 24, the electric motor 27 of the lifting device 17 will stop, and the electric motor of the leg support part 3 will stop operating. The motor is in a stopped state (free rotation state).

The worker bends down at the waist (bends the knees and lowers the hips), assumes a forward-leaning posture with the upper body of the worker leaning forward, and holds the pallet or cargo on the floor. In this case, when the operator presses and operates the lowering operation switch 24, the electric motor 27 of the lifting device 17 is activated to the feeding side, the inner wires 18a and 19a of the wires 18 and 19 are fed out, and the hand portion 20 is operated to lower. Ru.

When the worker stops pressing the lowering operation switch 24, the electric motor 27 of the lifting device 17 stops and the hand section 20 stops, so the worker, while holding the right and left hand sections 20, The baggage is held by the left hand section 20.

In the above-mentioned state, even if the worker's head tries to displace downward in a forward-leaning posture with the upper body of the worker leaning forward, the worker's head will not be able to reach the head support section 21 (support section 30 and connection belt). 31) and is supported by the main body part 1 (the upper body of the worker) via the head support part 21 (the strut part 30 and the connection belt 31), and prevents the worker's head from moving downward. be done. When the operator lifts his head or turns his head to the right or left, the flexible connecting belt 31 slackens to allow the operator to perform the aforementioned movements.

The worker lifts the baggage by stretching his or her waist upward (by standing up) while holding the baggage with the hand section 20. When the worker presses and operates the lift operation switch 23, the operating arm 12 of the leg support section 3 is operated to swing downward, the worker's thighs are operated downward, and the worker raises his/her waist upward. Stretching (standing up) is assisted.
In this case, when viewing the main body part 1 from the leg support part 3, the leg support part 3 supports the worker's upper body in a forward leaning posture by supporting the main body part 1 against the worker's thighs. becomes possible.

After the worker stands up while pressing and operating the rise operation switch 23, when it is detected that the operating arm 12 of the leg support section 3 has reached a position facing substantially directly downward, the worker stands up (stands up). It is determined that the electric motor of the leg support section 3 is in a stopped state (free rotation state).

Next, when the operator presses and operates the lifting operation switch 23, the electric motor 27 of the lifting device 17 operates to the winding side, the inner wires 18a, 19a of the wires 18, 19 are wound, and the hand part 20 operates to lift. be done. When the hand section 20 rises to a desired position, the operator stops pushing the lift operation switch 23, thereby stopping the electric motor 27 of the lifting device 17 and stopping the hand section 20.

The worker walks to a high shelf or truck bed where the cargo is to be placed. When the worker arrives at a high shelf, truck bed, etc. and presses the lowering operation switch 24, the electric motor 27 of the lifting device 17 operates to the feeding side, and the inner wires 18a, 19a of the wires 18, 19 are fed out. Then, the hand portion 20 is operated to lower.

The worker places the cargo on a high shelf, truck bed, or the like, and moves the hand unit 20 away from the cargo. When the worker places the cargo on a high shelf or on the bed of a truck, it returns to the initial state, and the worker performs the same operation as described above for the next cargo.

(First alternative embodiment of the invention)
Instead of the head support part 21 shown in FIGS. 1, 2, and 3, the head support part 21 may be configured as described below.

As shown in FIGS. 4 and 5, the head support part 21 has a soft flat chest pad 36 and a slightly hard block-shaped receiving part 37, and the receiving part 37 is connected to the chest pad. It is removably attached to the left and right center portions of the upper part of 36 with hook-and-loop fasteners (not shown) (Velcro tape (registered trademark)).

The main body 1 is provided with a flexible mounting belt 38 , the upper part of the mounting belt 38 is connected to the upper part of the inner surface of the shoulder belt 5 , and the lower part of the mounting belt 38 is connected to the lower part of the inner surface of the shoulder belt 5 . It is connected.

When the worker attaches the main body part 1 to the upper body, the worker inserts the chest pad 36 of the head support part 21 between the shoulder belt 5 and the attachment belt 38, and inserts the receiving part 37 of the head support part 21. It is located between the right and left shoulder belts 5. Thereby, the head support section 21 is placed in a portion of the main body section 1 that corresponds to the chest of the worker.

In the state shown in FIGS. 4 and 5, the shoulder belt 5 does not come into direct contact with the worker's chest, but comes into contact with the worker's chest via the chest pad 36 of the head support section 21. The compressive action of the shoulder belt 5 is less likely to be applied to the chest of the worker.

By inserting the chest pad 36 of the head support part 21 between the shoulder belt 5 and the attachment belt 38, the chest pad 36 of the head support part 21 is attached to the shoulder belt 5, and the head support part 21 is attached to the shoulder belt 5. The chest pad 36 of the portion 21 does not move in the vertical direction with respect to the shoulder belt 5.

Even if the worker's head tries to move downward in a forward-leaning posture with the upper body of the worker leaning forward, the worker's chin contacts the receiving part 37 of the head support part 21, causing the worker's The jaw part is supported by the receiving part 37 of the head support part 21, and is supported by the main body part 1 (the upper body of the worker) via the head support part 21, thereby preventing the worker's head from moving downward. be done. When the worker lifts the head or turns the head to the right or left, the worker's chin moves away from the receiving part 37 of the head support part 21, causing the above-mentioned movement of the worker to occur. Permissible.

If the receiving part 37 is removed from the chest pad 36 of the head support part 21, the function of supporting the worker's chin will disappear in the head support part 21, and the compressive action of the shoulder belt 5 will be applied to the worker's chest. The functions that make it difficult remain.

(Second alternative embodiment of the invention)
In the head support section 21 shown in FIGS. 1, 2, and 3, the column section 30 is eliminated, and the connection belt 31 is attached across the lower parts of the right and left arm sections 2 (the upper parts of the right and left vertical frames 6). It's okay to be hit. According to this configuration, the arm portion 2 (vertical frame 6) becomes the support portion 30.

(Third alternative embodiment of the invention)
In the head support section 21 and (second alternative embodiment of the invention) shown in FIGS. 1, 2, and 3, instead of the cloth cap 34, a helmet (not shown) made of hard synthetic resin is used. It may also be used as a hat 34.
The cap 34 may be omitted and the end portion 31a of the connection belt 31 may be configured to be attached directly to the head of the operator.

(Fourth alternative embodiment of the invention)
In the head support section 21 shown in FIGS. 4 and 5, the chest pad 36 may be omitted and the receiving section 37 may be configured to be detachably attached to the shoulder belt 5 or the connection belt 22.
According to this configuration, the receiving portion 37 becomes the head support portion 21.

(Fifth alternative embodiment of the invention)
In the leg support portion 3, the electric motor that swings the operating arm 12 around the axis P1 may be eliminated.

In this configuration, a metal spring (not shown) or an air spring (not shown) may be provided to urge the leg support part 3 downward around the axis P1 with respect to the main body part 1. A holding mechanism (not shown) that can fix and release the leg support part 3 from the main body part 1 at any angle around the axis P1 may be provided.
As a result, when viewing the main body 1 from the leg support 3, the leg support 3 supports the worker's upper body in a forward leaning posture by supporting the main body 1 against the worker's thighs. becomes possible.

(Sixth alternative embodiment of the invention)
In the leg support section 3, a knee pad (not shown) may be attached to the operating arm 12 instead of the leg belt 13.

According to this configuration, the operation arm 12 is attached to the worker's knee via the knee pad, and the leg support section 3 is attached to the worker's thigh by the operation arm 12 and the knee pad. I support 1.

(Seventh alternative embodiment of the invention)
In the leg support section 3, the operating arm 12 that is swingable around the axis P1 may be eliminated, and the entire leg support section 3 may be configured to be elastically deformable and connected to the main body section 1.
In this configuration, the metal spring, air spring, and holding mechanism described in the above-mentioned (Fifth Alternative Embodiment of the Invention) may be provided.

(Eighth alternative embodiment of the invention)
The lifting device 17, the lifting operation switch 23, and the lowering operation switch 24 are abolished, the wires 18 and 19 are connected to the main body 1 and the arm 2, the position of the hand 20 is fixed, and the hand 20 can be raised and lowered. It may be configured so that it is not performed.

(Ninth alternative embodiment of the invention)
The right and left arm parts 2, the control device 8 and the battery 9, the lifting device 17, the harness 14 and the wires 18, 19, the hand part 20, the raising operation switch 23, the lowering operation switch 24, etc. may be eliminated.
The leg support part 3 may be abolished.

INDUSTRIAL APPLICABILITY The present invention can be applied to an assist device that is worn by a worker to assist the worker.

1 Main body part 3 Leg support part
5 Shoulder belt
21 Head support section 30 Support section 31 Connection belt (connection section)
34 Hat
36 Chest pad
37 Receiving part
P2 axis center

Claims (8)

A main body that is attached to the upper body of a worker;
Provided in the main body part, and capable of preventing downward displacement of the worker's head by supporting the worker's head when the worker's upper body is in a forward-leaning posture, and above the worker's head. and a head support portion that allows horizontal movement around an axis along the spine of the worker ,
The head support portion includes a support portion extending upward from a portion of the main body portion corresponding to the back of the worker, and a connection portion attached to the support portion and the head of the worker. has,
The support section extends upward from a portion of the main body corresponding to the back of the worker, and extends downward from a portion of the main body corresponding to the back of the worker. An assist device that allows you to change your posture around an axis along the left and right directions, from a downward posture to a downward posture . The assist device according to claim 1 , wherein the connecting portion is a flexible connecting belt. a cap connected to the connection part;
The assist device according to claim 1 or 2 , wherein the connecting portion is attached to the head of the worker by the worker putting the hat on the head. A main body that is attached to the upper body of a worker;
a shoulder belt provided on the main body and into which the worker's arm and shoulder are inserted to attach the main body to the upper body of the worker;
Provided in the main body part, and capable of preventing downward displacement of the worker's head by supporting the worker's head when the worker's upper body is in a forward-leaning posture, and above the worker's head. and a head support portion that allows horizontal movement around an axis along the spine of the worker,
The head support section is attached to the shoulder belt so as to be located at a portion of the main body corresponding to the worker's chest, and supports the worker's chin from below, thereby supporting the worker's head. An assist device that can prevent the worker's head from moving downward by supporting the worker's head. The assist device according to claim 4, wherein the head support section includes a chest pad attached to the shoulder belt and a receiving section attached to the chest pad to support the chin of the worker. The assist device according to claim 5, wherein the chest pad is attached to the shoulder belt so as to be located between the chest of the worker and the shoulder belt. The assist device according to claim 5 or 6, wherein the receiving portion is removable from the chest pad. Claims 1 to 7, further comprising a leg support part that is provided on the main body and can support the upper body of the worker in a forward leaning posture by supporting the main body against the worker's thighs. The assist device according to any one of the following.

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