JP6956683B2 - Assist equipment - Google Patents

Description

The present invention relates to an assist device that is worn and used by an operator and assists the operator's work (operation).

As the assist device as described above, there is one as disclosed in Patent Document 1.
Patent Document 1 includes a main body portion attached to an operator, and right and left arm portions extending forward from the main body portion. An elevating device is provided in the main body, and right and left wires (corresponding to a cord-like body) extend from the elevating device. The wire extends downward from the arm portion, and the right and left hand portions are connected to the extending end of the wire.

The right hand portion holds the right side wall portion of the cargo, and the left hand portion holds the left side wall portion of the luggage to hold the luggage. With the luggage held in the hand portion, the hand portion (luggage) is raised by winding the wire with the elevating device, and the hand portion (luggage) is lowered by feeding out the wire by the elevating device.

Japanese Unexamined Patent Publication No. 2016-129916

In the assist device as in Patent Document 1, there is room for improvement in terms of increasing the certainty of holding the luggage by the hand portion.
An object of the present invention is to increase the certainty of holding a load by the hand portion in the assist device provided with the right and left hand portions.

The assist device of the present invention
The main body that can be attached to the worker
An arm portion extending forward from the main body portion and
A cord-like body extending downward from the arm portion and
Left and right hand portions connected to the extending end of the cord-like body are provided.
Each of the left and right hand portions has a side wall holding portion that is applied to the side wall portion of the luggage when it is set on the luggage, and a side wall holding portion that extends laterally from the side wall holding portion and that is used when the luggage is set on the luggage. It is equipped with an extension that can be applied to the upper surface.
An approach operation unit that generates an operation force to bring the left and right hand portions close to each other in a state where the left and right hand portions are set in the luggage is provided.
The extension portion is provided with a handle portion that can be gripped by an operator.
The approach operation portion includes a right support portion provided on the upper surface portion of the extension portion in the right hand portion and a left support portion provided on the upper surface portion of the extension portion in the left hand portion. Be prepared
From the right first hanging portion on which the right cord-like body is hung on the right supporting portion, and at a position closer to the lateral wall holding portion on the right side than the right first hanging portion in the left-right direction and from the right first hanging portion. It is provided at a lower position and is provided with a right second hanging portion on which the right cord-like body is hung.
From the left first hanging portion on which the left cord-like body is hung on the left support portion, and at a position closer to the lateral wall holding portion on the left than the left first hanging portion in the left-right direction and from the left first hanging portion. It is provided at a lower position and is provided with a left second hanging portion on which the left cord-like body is hung.
In the right cord-like body, the right side wall holding portion side in the left-right direction is in contact with the right first hanging portion, and the opposite side of the right side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the right support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand portion.
In the left cord-like body, the left side wall holding portion side in the left-right direction is in contact with the left first hanging portion, and the opposite side of the left side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand portion.
The extending end of the right cord-shaped body is connected to the left hand portion, and the extending end of the left cord-shaped body is connected to the right hand portion.

Further, the assist device of the present invention is
The main body that can be attached to the worker
An arm portion extending forward from the main body portion and
A cord-like body extending downward from the arm portion and
Left and right hand portions connected to the extending end of the cord-like body are provided.
Each of the left and right hand portions has a side wall holding portion that is applied to the side wall portion of the luggage when it is set on the luggage, and a side wall holding portion that extends laterally from the side wall holding portion and that is used when the luggage is set on the luggage. It is equipped with an extension that can be applied to the upper surface.
An approach operation unit that generates an operation force to bring the left and right hand portions close to each other in a state where the left and right hand portions are set in the luggage is provided.
The extension portion is provided with a handle portion that can be gripped by an operator.
The approach operation portion includes a right support portion provided on the upper surface portion of the extension portion in the right hand portion and a left support portion provided on the upper surface portion of the extension portion in the left hand portion. Be prepared
From the right first hanging portion on which the right cord-like body is hung on the right supporting portion, and at a position closer to the lateral wall holding portion on the right side than the right first hanging portion in the left-right direction and from the right first hanging portion. It is provided at a lower position and is provided with a right second hanging portion on which the right cord-like body is hung.
From the left first hanging portion on which the left cord-like body is hung on the left support portion, and at a position closer to the lateral wall holding portion on the left than the left first hanging portion in the left-right direction and from the left first hanging portion. It is provided at a lower position and is provided with a left second hanging portion on which the left cord-like body is hung.
In the right cord-like body, the right side wall holding portion side in the left-right direction is in contact with the right first hanging portion, and the opposite side of the right side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the right support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand portion.
In the left cord-like body, the left side wall holding portion side in the left-right direction is in contact with the left first hanging portion, and the opposite side of the left side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand portion.
The extending end of the cord on the right and the extending end of the cord on the left are connected.

According to the present invention, while the luggage is held by the hand portion, an operating force for bringing the left and right hand portions closer to each other is generated by the approach operation portion, and the right hand portion is pressed against the right side wall portion of the luggage. The left hand portion is pressed against the left side wall portion of the luggage, which enhances the certainty of holding the luggage by the hand portion.

When the cargo is held by the hand as described above, the operator should hold the handle of the hand and pull it upward to assist in lifting the cargo and to correct the posture of the cargo. May be performed.

According to the present invention, the hand portion is provided with a side wall holding portion and an extending portion, and the handle portion is provided on the extending portion.
As a result, the side wall holding portion of the hand portion is applied to the side wall portion of the luggage, the extending portion of the hand portion is applied to the upper surface portion of the luggage, and the operator holds the luggage in the hand portion. When the handle portion of the hand portion is held and operated upward, the handle portion is located on the center side of the luggage with respect to the side wall holding portion of the hand portion, so that the side wall holding portion of the hand portion is pressed against the side wall portion of the luggage. Moment is generated.

Therefore, according to the present invention, in addition to the function of the approach operation unit, the hand unit is further pressed against the side wall portion of the luggage by the moment caused by the operator holding the handle portion of the hand portion and operating it upward. Therefore, the certainty of holding the luggage by the hand part is enhanced.

Further, according to the present invention, when the weight of the luggage is applied to the hand portion while the luggage is held by the hand portion, tension is generated in the cord-like body, and the tension of the cord-like body exerts the tension on the left and right hand portions. It is an operating force that brings them closer to each other.
By devising the arrangement of the cord-like bodies in this way, the approaching operation portion can be obtained, which is advantageous in terms of simplification of the structure.

Here, when the support portion has only one hanging portion and the left and right cords are passed through the supporting portion so as to be in contact with the one hanging portion and are supported, depending on the dimensions of the luggage in the left-right direction and the like, When tension is generated on the cords by sandwiching the luggage between the left and right hand parts, the left and right cords spread in the direction of separation from each other, the operating force is weakened, and the gripping force acting on the luggage is insufficient. May become.

However, according to the present invention, the support portion is provided with two hanging portions, and the left and right cord-like bodies are passed through the left and right support portions to be supported so as to form a crank shape, so that the cord-like body is tensioned. Even if the left and right cords spread in a direction in which the left and right cords are separated from each other when they are generated, a force is generated in which the hand portion is twisted toward the load, and the gripping force acting on the load is improved.

In the present invention
The right handle portion is provided at a position closer to the right side wall holding portion than the right support portion in the left-right direction on the upper surface portion of the right extension portion.
It is preferable that the left handle portion is provided at a position closer to the left side wall holding portion than the left support portion in the left-right direction on the upper surface portion of the left extension portion.

According to the present invention, when the load is held by the hand portion, the handle portion of the hand portion is located on the outside of the cord-like body. Therefore, when the operator holds the handle portion of the hand portion, the operator's hand Rarely comes into contact with the cord-like body, and the operator can comfortably hold the handle portion of the hand portion.

In the present invention
It is preferable that the side wall holding portion is provided with a non-slip material having adsorptive properties.

For example, there is a luggage such as a cardboard box, which is not provided with anything on the side wall of the luggage and has a flush side wall.
According to the present invention, since the non-slip material having adsorptivity is provided on the side wall holding portion of the hand portion, the side wall holding portion (non-slip material) of the hand portion is pressed against the side wall portion of a load such as a cardboard box. Then, the anti-slip material is adsorbed on the side wall of the luggage.

When the luggage is lifted by the hand part in this state, the anti-slip material will be released even if the side wall part of the luggage tries to move downward (even if it tries to fall) along the side wall holding part (non-slip material) of the hand part. By adsorbing to the side wall portion of the luggage, the sliding (movement) of the side wall portion of the luggage along the anti-slip material is stopped, and the luggage is held by the hand portion.
As described above, according to the present invention, the luggage can be appropriately held even if the luggage is not provided with an opening or the like and is provided with a flush side wall portion.

It is a right side view with the operator wearing the assist device. It is a rear view with the operator wearing the assist device. It is a perspective view of the assist device. It is the whole perspective view of the hand part, the cover part and the approach operation part. It is a side view of a hand part. It is a vertical sectional rear view of a hand part. It is an exploded perspective view of a hand part and a cover part. It is a rear view which shows the state which the load placed on the floor is lifted by the hand part. It is a rear view which shows the state which the luggage was lifted by the hand part. It is a rear view of the hand part, the cover part and the approach operation part in the 1st alternative embodiment of the invention. It is a rear view of the hand part, the cover part and the approach operation part in the 2nd alternative embodiment of the invention. In the second alternative embodiment of the invention, it is a longitudinal perspective view in the vicinity of the approach operation unit. It is a rear view of the hand part, the cover part and the approach operation part in the 3rd alternative form of carrying out the invention.

1 to 13 show an assist device worn and used by an operator.
Unless otherwise specified, the front-rear direction and the left-right direction in the embodiment of the present invention are described as follows. When the worker is wearing the assist device, the front side is "front", the rear side is "rear", the right side is "right", and the left side is "left" when viewed from the worker.

(Overall configuration of assist device and main body)
As shown in FIGS. 1, 2 and 3, the assist device includes a main body 1 attached to the back of the operator, and right and left arms extending upward from the upper part of the main body 1 and extending forward. The right and left waist assisting portions 3 provided at the lower part of the portion 2 and the main body portion 1 are provided, and a mounting belt 4 for mounting on an operator and right and left shoulder belts 5 are provided.

The main body 1 has a frame shape including a right and left vertical frames 6, a support plate 7 and the like connected over the right and left vertical frames 6. The attachment belt 4 is provided at the lower part of the main body 1, and the shoulder belt 5 is attached to the upper part of the front surface of the support plate 7. The control device 8 is attached to the upper and lower intermediate portions on the rear surface of the support plate 7, and the battery 9 is attached to the lower portion of the rear surface of the support plate 7.

As shown in FIGS. 1 and 2, the worker's arm (shoulder) is put in the shoulder belt 5, and the mounting belt 4 is wrapped around the worker's waist and fixed, so that the main body is attached to the worker's back. 1 is attached.

The weight of the assist device and the luggage B (see FIG. 7) is mainly applied to the waist of the worker via the mounting belt 4, and the weight of the assist device and the luggage B is stably supported by the waist of the worker. The right and left shoulder belts 5 mainly exert a function of stopping the state in which the main body 1 is about to move backward from the worker's back.

(Right and left hip aid)
As shown in FIGS. 1, 2, and 3, the waist assist portion 3 includes a base portion 10, a transmission case 11, an operation arm 12, a leg belt 13, and the like. The base portion 10 is supported on the front portion of the lower portion of the support plate 7 so that the mounting position can be changed in the left-right direction, and the transmission case 11 is forwardly connected to the outer end portion of the base portion 10.

The operation arm 12 is swingably supported around the horizontal axis P1 in 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 operation arm 12. A transmission mechanism (not shown) composed of a plurality of spur gears is provided inside the transmission case 11, an electric motor (not shown) is provided inside the base 10, and the transmission mechanism is provided by the electric motor. The operation arm 12 is oscillated and driven around the horizontal axis P1.

As shown in FIGS. 1 and 2, the operator wraps the leg belt 13 around the thigh and attaches the leg belt 13 to the thigh with a hook-and-loop fastener (not shown) (magic tape (registered trademark)). .. When the worker is wearing the assist device, the right waist assist part 3 (transmission case 11) is located on the right side of the worker's waist, and the left waist assist part 3 (transmission case 11) is located on the left side of the worker's waist. ) Is located.

(Right and left arms, wires)
As shown in FIGS. 1, 2 and 3, the upper part of the right and left vertical frames 6 extends diagonally upward and diagonally forward beyond the right and left shoulders of the worker, and extends right and diagonally forward. It is the left arm part 2. Right and left support members 16 are attached to the upper ends of the arm portion 2, and right and left pulleys (not shown) are rotatably supported by the support members 16.

An elevating device 17 is attached to the upper part of the rear surface of the support plate 7, and from the elevating device 17, the two wires 18 and 19 on the right (corresponding to a cord-like body) and the two wires 18 and 19 on the left (corresponding to a cord). Corresponds to the cord) is extended.

The outer support portion 15 is connected to the upper portion of the support plate 7, and the support member 16 is provided with the outer support portion 16a. The ends of the outer 18b and 19b of the wires 18 and 19 are connected to the outer support 16a of the outer support 15 and the support member 16, and the inners 18a and 19a of the wires 18 and 19 are connected to the elevating device 17. ..

The inners 18a and 19a of the two wires 18 and 19 on the right are hung on the pulley of the support member 16 on the right and extend downward. The mounting portion 21 is connected to the extending ends of the inners 18a and 19a of the two wires 18 and 19 on the right, and the right hand portion 20 is connected to the mounting portion 21.

The inners 18a and 19a of the two left wires 18 and 19 are hung on the pulley of the left support member 16 and extend downward. The mounting portion 21 is connected to the extending ends of the inners 18a and 19a of the two left wires 18 and 19, and the left hand portion 20 is connected to the mounting portion 21.

(lift device)
As shown in FIGS. 1 and 2, the elevating device 17 is connected to the support plate 7. A vertical transmission case 25 containing a transmission mechanism (not shown), a support case 26 laterally connected to the upper part of the transmission case 25, an electric motor 27 laterally connected to the lower part of the transmission case 25, and a support case 26. The elevating device 17 is provided with four rotating bodies (not shown) that are rotatably supported around the lateral axis of the shaft.

The ends of the outer 18b, 19b of the right and left wires 18, 19 are connected to the outer support 15, and the inners 18a, 19a of the wires 18 and 19 are attached to each of the four rotating bodies inside the support case 26. It is connected.

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.

(Hand part)
The right and left hand portions 20 are shown in FIGS. 4 to 7, and the right and left hand portions 20 have the same shape.

The hand portion 20 is formed by bending a plate material, and includes a vertical wall holding portion 31 and an extending portion 32 extending laterally from the upper portion of the horizontal wall holding portion 31. The upper handle portion 33 (corresponding to the handle portion) is connected upward to the upper surface portion of the extending portion 32, and the lower handle portion 34 is laterally connected to the lower portion of the side wall holding portion 31.

A hook-and-loop fastener 35 (magic tape (registered trademark)) is attached to the upper surface portion and the side surface portion of the upper handle portion 33. A hook-and-loop fastener 36 (magic tape (registered trademark)) is attached to the upper surface portion and the side surface portion of the lower handle portion 34.

Two channel-shaped brackets 37 are connected to the opposite end of the lateral wall holding portion 31 in the extending portion 32, and a round bar-shaped shaft member 38a is laterally attached to the bracket 37. Further, the round bar-shaped shaft member 38b is laterally attached to the bracket 37 at a position closer to the side wall holding portion 31 than the shaft member 38a and below the shaft member 38a in the left-right direction.

In the right hand portion 20, one bracket 37 and shaft members 38a and 38b are right support portions 39, and the other bracket 37 and shaft member 38b are right connection portions 40. In the left hand portion 20, one bracket 37 and shaft members 38a and 38b are left support portions 41, and the other bracket 37 and shaft member 38b are left connection portions 42. The shaft member 38a in the left and right support portions 39 and 41 corresponds to the "right first hanging portion (left first hanging portion)", and the shaft member 38b corresponds to the "right second hanging portion (left second hanging portion)". ..

A non-slip material 43 is attached to the surface of the side wall holding portion 31 opposite to the lower handle portion 34. The non-slip material 43 is formed in the form of a thin sheet by a gel material or a rubber material having adsorptive and adhesive properties, and the non-slip material 43 is adhered to the flat plate-shaped substrate 44 and held at the end of the substrate 44. A hand portion 44a is provided.

Lateral guide rails 45 are attached to the upper and lower parts of the side wall holding portion 31. The anti-slip material 43 and the substrate 44 are attached to the side wall holding portion 31 by inserting the substrate 44 between the guide rails 45 while holding the handle portion 44a of the substrate 44.
When replacing the anti-slip material 43, while holding the handle portion 44a of the substrate 44, the substrate 44 is pulled out from between the guide rails 45, and another anti-slip material 43 and the substrate 44 are inserted between the guide rails 45. , It may be attached to the side wall holding portion 31.

(Connection between hand part and mounting part, and approach operation part)
As shown in FIG. 4, a belt 28 (corresponding to a cord-like body) made of synthetic fiber and having a narrow width is connected to the attachment portion 22 made of a metal plate material.

The right mounting portion 22 and the belt 28 are prepared, and the left mounting portion 22 and the belt 28 are prepared. The right mounting portion 22 is mountable and removable from the right mounting portion 21, and the left mounting portion 22 is mountable and removable from the left mounting portion 21.

The right belt 28 is bent with the right side wall holding portion 31 side in the left-right direction of the right belt 28 in contact with the shaft member 38a and the opposite side of the right side wall holding portion 31 side in the left-right direction in contact with the shaft member 38b. It is passed through the right support portion 39 of the right hand portion 20 so as to be in a vertical state (crank shape), and is extended sideways by changing the direction in the left-right direction, and the extending end of the right belt 28 is on the left. It is connected to the left connecting portion 42 of the hand portion 20 of the above. In the right support portion 39, the right belt 28 is movable (slable) in the longitudinal direction of the belt 28 with respect to the right hand portion 20.

The left belt 28 is bent so that the left side wall holding portion 31 side in the left-right direction of the left belt 28 is in contact with the shaft member 38a and the opposite side of the left side wall holding portion 31 side in the left-right direction is in contact with the shaft member 38b. It is passed through the left support portion 41 of the left hand portion 20 so as to be in a state (crank shape), and is extended sideways by changing the direction in the left-right direction, and the extending end of the left belt 28 is on the right. It is connected to the right connecting portion 40 of the hand portion 20 of the above. In the left support portion 41, the left belt 28 is movable (slable) in the longitudinal direction of the belt 28 with respect to the left hand portion 20.

By attaching the belt 28 as described above, in the right hand portion 20, the upper handle portion 33 has the right support portion 39, the right connection portion 40, and the belt in the left-right direction of the upper surface portion of the extension portion 32. It is arranged at a position closer to the side wall holding portion 31 (position on the right outer side) than 28.
In the left hand portion 20, the upper handle portion 33 is located closer to the side wall holding portion 31 than the left support portion 41, the left connecting portion 42, and the belt 28 in the left-right direction among the upper surface portions of the extending portion 32 ( It is placed at the left outer position).

As described above, the approach operation unit 29 includes a right support portion 39 and a left support portion 41, a right connection portion 40 and a left connection portion 42, and a belt 28, and the extending end of the right belt 28 is on the left. It is connected to the left connecting portion 42 of the hand portion 20, and the extending end of the left belt 28 is connected to the right connecting portion 40 of the right hand portion 20.

Since the mounting portion 22 can be attached to and detached from the mounting portion 21, when another hand portion 20 having a structure and a function different from that of the hand portion 20 shown in FIGS. 4 to 7 is prepared, the mounting portion 22 is attached. It is possible to remove it from the mounting portion 21 and attach another hand portion 20 directly to the mounting portion 21.

(Structure related to the ascending operation switch and the descending operation switch for raising and lowering the hand part)
As shown in FIGS. 4 and 7, the right cover portion 46 is provided, and the ascending operation switch 23 is provided on the right cover portion 46. A left cover portion 46 having a symmetrical shape with the right cover portion 46 is provided, and a lowering operation switch 24 is provided on the left cover portion 46.

The cover portion 46 includes an outer portion 47 integrally formed of synthetic resin and an inner portion 48 made of metal, and the inner portion 48 is connected to the inner surface of the outer portion 47 by screws.
The inner portion 48 is formed by bending a metal plate material, and is a lateral portion 49 arranged in the vertical direction, an upper portion 50 extending laterally from the upper portion of the lateral portion 49, and an extension of the upper portion 50. A lateral side portion 51 extending upward from the protruding end portion is provided.

The ascending operation switch 23 is attached to the outer portion 47 of the right cover portion 46, and the lowering operation switch 24 is attached to the outer portion 47 of the left cover portion 46.
As shown in FIGS. 1, 2 and 3, the right and left harnesses 14 connected to the control device 8 are inside the right and left arm portions 2, and pass through the inside of the arm portions 2 to be arm portions. It extends to the upper end of 2. The harness 14 protrudes from the opening at the upper end of the arm portion 2 and extends downward, the right harness 14 is connected to the ascending operation switch 23, and the left harness 14 is connected to the descending operation switch 24. ing.

A hook-and-loop fastener 52 (magic tape (registered trademark)) is attached to the surface of the inner portion 48 on the upper portion 50 side of the lateral portion 49. A hook-and-loop fastener 52 (magic tape (registered trademark)) is attached to the lower surface portion of the upper portion 50.

(Attachment and removal of the cover to the hand)
As shown in FIGS. 4, 5 and 6, the cover portion 46 is connected to the surface fastener 35 of the upper handle portion 33 of the hand portion 20 by abutting the surface fastener 52 of the cover portion 46 on the hand portion 20. It can be attached to the upper handle portion 33, and the ascending operation switch 23 (lowering operation switch 24) is attached to the hand portion 20 via the cover portion 46.

Similar to the above, by connecting the surface fastener 52 of the cover portion 46 to the surface fastener 36 of the lower handle portion 34 of the hand portion 20, the cover portion 46 is connected to the lower handle portion 34 of the hand portion 20. It can be attached, and the ascending operation switch 23 (lowering operation switch 24) is attached to the hand portion 20 via the cover portion 46.

Since the connection range of the hook-and-loop fasteners 35, 36, 52 is relatively wide, the mounting position of the cover portion 46 on the upper handle portion 33 (lower handle portion 34) of the hand portion 20 is set to the hook-and-loop fasteners 35, 36, It can be arbitrarily changed in the connection range of 52.

By separating the hook-and-loop fastener 52 of the cover portion 46 from the hook-and-loop fasteners 35 and 36 of the upper handle portion 33 (lower handle portion 34) of the hand portion 20, the cover portion 46 is removed from the hand portion 20 and the ascending operation is performed. The switch 23 (lowering operation switch 24) is removed from the hand unit 20.

When various hand portions 20 are attached to the attachment portion 21 (when replaced), the cover portion is formed by connecting the hook-and-loop fastener 52 of the cover portion 46 to the surface fastener (not shown) of the replaced hand portion 20. 46 (up operation switch 23 and down operation switch 24) can be shared by various hand units 20.

(Activation of the elevating device by operating the ascending operation switch and the descending operation switch)
As shown in FIGS. 1 and 2, when the ascending operation switch 23 is pushed, the rotating body is rotationally driven to the take-up side by the electric motor 27 in the elevating device 17, and the inners 18a and 19a of the wires 18 and 19 rotate. It is wound up by the body and the hand portion 20 rises.

When the lowering operation switch 24 is pushed, the rotating body is rotationally driven to the feeding side by the electric motor 27, the inners 18a and 19a of the wires 18 and 19 are fed out from the rotating body, and the hand portion 20 is lowered.

When the pushing operation of the ascending operation switch 23 and the descending operation switch 24 is stopped, the electric motor 27 is stopped.
The electric motor 27 is equipped with an electromagnetic brake (not shown), the electromagnetic brake is automatically released when the electric motor 27 is operated, and the electromagnetic brake is automatically braked when the electric motor 27 is stopped or not energized. It becomes a state.

(Luggage holding operation by the hand part)
As shown in FIG. 8, a cube-shaped luggage B such as a cardboard box is assumed.
As shown in FIGS. 1 and 2, when the worker wearing the assist device holds the upper handle portion 33 or the lower handle portion 34 of the hand portion 20 with his right hand and left hand forward, the hand portion 20 The side wall holding portion 31 of the hand portion 20 faces in the vertical direction, and the extending portion 32 of the hand portion 20 faces in the horizontal direction.

As shown in FIG. 8, it is assumed that the luggage B is placed on the floor for the worker who wears the assist device.
In the right hand portion 20, the operator applies the lateral wall holding portion 31 (non-slip material 43) to the right lateral wall portion B1 of the luggage B while applying the extending portion 32 to the upper surface portion B2 of the luggage B. In the left hand portion 20, the lateral wall holding portion 31 (non-slip material 43) is applied to the left lateral wall portion B1 of the luggage B while the extending portion 32 is applied to the upper surface portion B2 of the luggage B. As a result, the anti-slip material 43 of the hand portion 20 is attracted to the side wall portion B1 of the luggage B.

For example, if the operator performs the above-mentioned operation while holding the upper handle portion 33 of the hand portion 20, the operator does not have to bend the waist portion too much, but the side wall holding portion 31 (sliding) of the hand portion 20. The stopper 43) can be applied to the side wall portion B1 of the luggage B.

In the state shown in FIG. 8, when the hand portion 20 is raised, the luggage B is lifted together with the hand portion 20 by the suction action of the anti-slip material 43 of the hand portion 20.
Due to the weight of the luggage B, even if the side wall portion B1 of the luggage B tries to move downward (even if it tries to fall) along the side wall holding portion 31 (non-slip material 43) of the hand portion 20, the hand portion 20 slides. Due to the suction action of the stopper 43, the movement of the luggage B to the lower side of the side wall portion B1 is stopped, and the luggage B is held by the hand portion 20.

When the luggage B is lifted by the hand portion 20, the weight of the luggage B is applied to the hand portion 20, and tension is generated on the belt 28. The right belt 28 generates an operating force FL that tries to bring the left hand portion 20 closer to the right hand portion 20, and the left belt 28 causes the right hand portion 20 to approach the left hand portion 20. An attempted operating force FR is generated.

Here, when the shaft member 38a is not provided, when the load B is sandwiched between the left and right hand portions 20 and tension is generated in the belt 28, depending on the relationship between the left-right dimension of the load B and the distance between the left and right arms 2. In addition, the belts 28 may spread in a direction in which they are separated from each other, the operating forces FL and FR may be weakened, and the gripping force acting on the load B may be insufficient. However, in the present embodiment, the right belt 28 is passed through the right support portion 39 so as to have a crank shape, and the left belt 28 is also passed through the left support portion 41 so as to have a crank shape. Even when the belts 28 spread in a direction in which they are separated from each other, a force for twisting the hand portion 20 toward the load B is generated, so that the gripping force acting on the load B is improved.

As described above, in the approach operation unit 29, the operating forces FR and FL that bring the right and left hand units 20 closer to each other are generated, and the side wall holding portion 31 (non-slip material 43) of the right hand unit 20 is loaded. The right side wall portion B1 of B is pressed, and the side wall holding portion 31 (non-slip material 43) of the left hand portion 20 is pressed against the left side wall portion B1 of the luggage B. As a result, the certainty of holding the luggage B by the hand portion 20 is enhanced.

(Assistant operation of the operator when holding the luggage by the hand part)
When the luggage B is held by the hand unit 20, the operator may assist in lifting the luggage B, correct the posture of the luggage B, and the like. In this case, the operator may hold the upper handle portion 33 of the hand portion 20 and perform an operation such as pulling up the hand portion 20 upward.

As shown in FIG. 8, when the side wall holding portion 31 of the hand portion 20 is in contact with the side wall portion B1 of the luggage B, the operator holds the upper handle portion 33 of the hand portion 20 and operates it upward ( (See direction A1), a moment M1 that presses the side wall holding portion 31 of the hand portion 20 against the side wall portion B1 of the luggage B is generated around the vicinity of the connecting portion between the side wall holding portion 31 and the extending portion 32 in the hand portion 20. do.

As a result, in addition to the function of the approach operation unit 29 that generates the operation forces FR and FL that bring the right and left hand units 20 closer to each other, the operator holds the upper handle portion 33 of the hand unit 20 and operates it upward. Due to the moment M1, the side wall holding portion 31 (non-slip material 43) of the hand portion 20 is further pressed against the side wall portion B1 of the luggage B, and the certainty of holding the luggage B by the hand portion 20 is ensured. Can be enhanced.

As shown in FIG. 8, when the lateral wall holding portion 31 of the hand portion 20 is in contact with the lateral wall portion B1 of the luggage B and the luggage B is lifted from the floor, the non-slip material 43 of the hand portion 20 is not adsorbed. When it is considered sufficient, the operator holds the lower handle portion 34 of the hand portion 20 and presses the side wall holding portion 31 (non-slip material 43) of the hand portion 20 against the side wall portion B1 of the luggage B to obtain the hand. It is possible to increase the certainty of holding the luggage B by the unit 20.

As shown in FIG. 9, if it is considered that the non-slip material 43 of the hand portion 20 is sufficiently adsorbed even after the luggage B is lifted from the floor, the operator may perform the lower handle portion 34 of the hand portion 20. By pressing the side wall holding portion 31 (non-slip material 43) of the hand portion 20 against the side wall portion B1 of the luggage B, the certainty of holding the luggage B by the hand portion 20 can be enhanced.

After the luggage B is lifted from the floor, the luggage B is often located on the front side of the chest and abdomen of the worker, so that the lower handle portion 34 of the hand portion 20 is located at a position where it is easy for the worker to hold. It becomes easy to operate.
If the cover portion 46 (upward operation switch 23 and lowering operation switch 24) is replaced from the upper handle portion 33 of the hand portion 20 to the lower handle portion 34, the operability is improved.

(Working form of assist device)
For example, when luggage B placed on a pallet or floor is placed on a high shelf or truck bed, the worker bends the waist down or bends the knee to drop the waist, and the luggage on the pallet or floor. Hold B in your hand, hold the luggage B with your hands extended downwards, extend your waist upwards or stand up, lift the luggage B by hand, and put the luggage B on a high shelf or truck bed. It is assumed that it will be placed.

A state in which the waist assist unit 3 and the elevating device 17 are operated by the control device 8 based on the pushing operation of the ascending operation switch 23 and the descending operation switch 24 in a state where the operator wearing the assist device performs the above-mentioned work. Will be described.

As shown in FIGS. 1 and 2, when the operator is wearing the assist device and the operator does not press both the ascending operation switch 23 and the descending operation switch 24, the electric motor 27 of the elevating device 17 is operated. Is stopped, and the electric motor of the waist assisting portion 3 is in a stopped state (free rotation state).

When the worker walks, or when the worker bends the waist downward or bends the knee to drop the waist, the operation arm 12 swings so as to follow the thigh of the worker. , The movement of the worker is not hindered.

When the worker bends the waist downward (bends the knee and drops the waist) and holds the pallet or the luggage B on the floor, when the worker pushes the lowering operation switch 24, the electric motor 27 in the lifting device 17 Operates to the feeding side, the inners 18a and 19a of the wires 18 and 19 are fed, and the hand portion 20 is lowered.

When the pressing operation of the lowering operation switch 24 is stopped, the electric motor 27 is stopped and the hand portion 20 is stopped. The luggage B is held by the part 20.

As described in the previous section (elevating device), the electric motor 27 is equipped with an electromagnetic brake (not shown), and the electromagnetic brake is automatically put into a braking state when the electric motor 27 is stopped or de-energized. ..
When the electric motor 27 is stopped, the inners 18a and 19a of the wires 18 and 19 are not extended from the elevating device 17, and even if the weight of the luggage B is applied to the hand portion 20 as described later, the hand portion 20 It never descends.

The operator lifts the luggage B by extending the waist portion upward (by standing up) while holding the luggage B by the hand portion 20. When the operator pushes the ascending operation switch 23, the operation arm 12 is driven downward in the waist assisting portion 3, the thigh portion of the operator is operated downward, and the waist portion is extended upward (standing up). ) Is assisted.

After the operator stood up while pressing the ascending operation switch 23, when it was detected in the waist assisting portion 3 that the operation arm 12 had reached a position facing substantially downward, the operator stood up (standing up). ), The electric motor of the waist assisting portion 3 is in a stopped state (free rotation state).

Next, in the elevating device 17, the electric motor 27 operates on the take-up side, the inners 18a and 19a of the wires 18 and 19 are taken up, and the hand portion 20 is raised. When the hand unit 20 rises to a desired position, the electric motor 27 stops and the hand unit 20 stops by stopping the pressing operation of the ascending operation switch 23.

The worker walks to a high shelf on which the luggage B should be placed, a truck bed, or the like. When the worker arrives at a high shelf, a truck bed, or the like and the worker pushes the lowering operation switch 24, the electric motor 27 operates on the feeding side in the lifting device 17, and the inners 18a of the wires 18 and 19 are operated. 19a is extended and the hand portion 20 is lowered.

The operator places the luggage B on a high shelf, a cargo bed of a truck, or the like, and removes the hand portion 20 from the luggage B. When the luggage B is placed on a high shelf or a cargo bed of a truck, it returns to the initial state, so the same operation is performed for the next luggage B.

(First alternative form of carrying out the invention)
When the upper handle portion 33 is attached to the upper surface portion of the extension portion 32 in the hand portion 20, it may be attached as described below.

As shown in FIG. 10, in the right and left hand portions 20, the fulcrum portion 54 is connected to the upper surface portion of the extension portion 32, and the intermediate portion of the support member 55 is formed around the lateral axis P2 of the fulcrum portion 54. Is supported swingably like a seesaw. At the end of the support member 55 on the right support portion 39 (left support portion 41) side, the upper handle portion 33 is swingably supported around the lateral shaft core P3 parallel to the shaft core P2.

With the above structure, the lateral wall holding portion 31 (non-slip material 43) is attached to the luggage B placed on the floor while the extending portion 32 is applied to the upper surface portion B2 of the luggage B in the right hand portion 20. It is applied to the right side wall portion B1 of the luggage B. In the left hand portion 20, the lateral wall holding portion 31 (non-slip material 43) is applied to the left lateral wall portion B1 of the luggage B while the extending portion 32 is applied to the upper surface portion B2 of the luggage B.

In the state shown in FIG. 10, when the operator lifts the luggage B by holding the upper handle portion 33 of the hand portion 20 and performing an operation such as pulling the hand portion 20 upward, the support member 55 is topped. The handle portion 33 side is slightly lifted, and the side of the support member 55 opposite to the upper handle portion 33 is pressed downward toward the vicinity of the upper side portion of the side wall holding portion 31.

As a result, a moment M1 that presses the side wall holding portion 31 of the hand portion 20 against the side wall portion B1 of the luggage B is generated around the vicinity of the connecting portion between the side wall holding portion 31 and the extending portion 32 of the hand portion 20. , A large moment M1 is generated.

(Second alternative form of carrying out the invention)
The approach operation unit 29 may be configured as described below.
As shown in FIGS. 11 and 12, in the right and left hand portions 20, one channel-shaped bracket 37 is connected to the opposite end of the lateral wall holding portion 31 in the extending portion 32. Three round bar-shaped shaft members 38a, 38b, and 38c are laterally attached to the bracket 37.

In the bracket 37, the shaft member 38b is arranged at a position closer to the side wall holding portion 31 than the shaft member 38a and at a position below the shaft member 38a in the left-right direction. Further, the shaft member 38c in the right hand portion 20 is arranged below the shaft member 38b in the vertical direction, and the shaft member 38c in the left hand portion 20 is arranged between the shaft members 38a and 38b in the vertical direction. .. The position of the shaft member 38c in each hand portion 20 is not particularly limited as long as it does not interfere with the belt 28 when the belt 28 is hooked on the shaft members 38a and 38b in a crank shape.

In the right hand portion 20, the shaft members 38a and 38b are the right support portion 39, and the shaft member 38c is the right connection portion 40. In the left hand portion 20, the shaft members 38a and 38b are the left support portion 41, and the shaft member 38c is the left connection portion 42.

The right belt 28 was bent with the right side wall holding portion 31 side in the left-right direction of the right belt 28 in contact with the shaft member 38a and the opposite side of the right side wall holding portion 31 in the left-right direction in contact with the shaft member 38b. It is passed between the right support portions 39 (shaft members 38a, 38b) and the right connection portion 40 (shaft member 38c) of the right hand portion 20 so as to be in a state (crank shape), and turns in the left-right direction. The extending end of the right belt 28 is connected to the left connecting portion 42 (shaft member 38c) of the left hand portion 20. In the right support portion 39 (shaft members 38a, 38b), the right belt 28 is movable (slable) in the longitudinal direction of the belt 28 with respect to the right hand portion 20.

The left belt 28 was bent because the left side wall holding portion 31 side in the left-right direction of the left belt 28 was in contact with the shaft member 38a and the opposite side of the left side wall holding portion 31 in the left-right direction was in contact with the shaft member 38b. It is passed under the left support portion 41 (shaft members 38a, 38b) of the left hand portion 20 so as to be in a state (crank shape), changes its direction in the left-right direction, and extends laterally. The extending end of the belt 28 is connected to the right connecting portion 40 (shaft member 38c) of the right hand portion 20. In the left support portion 41 (shaft members 38a, 38b), the left belt 28 is movable (slable) in the longitudinal direction of the belt 28 with respect to the left hand portion 20.

By attaching the right and left belts 28 as described above, the right belt 28 is on the upper side and the left belt 28 is on the lower side in the bracket 37 between the right and left hand portions 20, and the right. And the left belt 28 are arranged vertically so as to overlap in a plan view.

In the right hand portion 20, the shaft member 38c is arranged between the shaft members 38a and 38b in the vertical direction, and in the left hand portion 20, the shaft member 38c is arranged below the shaft member 38b in the vertical direction. You can do it. In this way, between the right and left hand portions 20, in the bracket 37, the right belt 28 is on the lower side, the left belt 28 is on the upper side, and the right and left belts 28 overlap in a plan view. It is arranged up and down like this.

(Third alternative form of carrying out the invention)
The approach operation unit 29 may be configured as described below.

As shown in FIG. 13, the right hand portion 20 is provided with a right support portion 39, and the right connection portion 40 is abolished. The left hand portion 20 is provided with a left support portion 41, and the left connection portion 42 is abolished.

The right belt 28 is passed through the right support portion 39 of the right hand portion 20, and the left belt 28 is passed through the left support portion 41 of the left hand portion 20. Between the right and left hand portions 20, the extending end of the right belt 28 and the extending end of the left belt 28 are connected by a connecting member 53.

As a result, when the luggage B is lifted by the hand portion 20, the tensions of the right and left belts 28 generate operating forces FR and FL that bring the right and left hand portions 20 closer to each other.
Further, even when the belts 28 spread in the directions away from each other, a force is generated in which the hand portion 20 is twisted toward the luggage B.
In this case, the connecting member 53 may be abolished and the right belt 28 and the left belt 28 may be composed of one continuous belt 28.

(Fourth alternative form of carrying out the invention)
In the approach operation unit 29 shown in FIGS. 4 to 12, the attachment unit 22 and the belt 28 may be abolished.

According to this structure, the inners 18a and 19a of the right wires 18 and 19 are in contact with the shaft member 38a with the right side wall holding portion 31 side in the left-right direction of the inners 18a and 19a of the right wires 18 and 19 and left and right. The opposite side of the right side wall holding portion 31 side in the direction is in contact with the shaft member 38b, passed through the right support portion 39 of the right hand portion 20 so as to be in a bent state (crank shape), and turned in the left-right direction. Extending sideways, the extending ends of the inners 18a and 19a of the right wires 18 and 19 are connected to the left connecting portion 42 of the left hand portion 20.

The inner 18a, 19a of the left wires 18 and 19 is in contact with the shaft member 38a on the left lateral wall holding portion 31 side in the left-right direction of the inner 18a, 19a of the left wire 18, 19 and the left lateral wall in the left-right direction. The opposite side of the holding portion 31 side is in contact with the shaft member 38b, is passed through the left support portion 41 of the left hand portion 20 so as to be in a bent state (crank shape), is turned in the left-right direction, and is extended sideways. The extending ends of the inners 18a and 19a of the left wires 18 and 19 are connected to the right connecting portion 40 of the right hand portion 20.

(Fifth alternative form of carrying out the invention)
In the approach operation unit 29 shown in FIG. 13, the attachment unit 22 and the belt 28 may be abolished.

According to this structure, the inners 18a and 19a of the right wires 18 and 19 are passed through the right support portion 39 of the right hand portion 20, and the inners 18a and 19a of the left wires 18 and 19 are left of the left hand portion 20. It is passed through the support portion 41. Between the right and left hand portions 20, the extending ends of the inners 18a and 19a of the right and left wires 18 and 19 are connected by the connecting member 53.

In this case, the connecting member 53 may be abolished and the right and left wires 18, 19 (inners 18a, 19a) may be composed of one continuous wire 18, 19 (inners 18a, 19a).

(Sixth Alternative Form of Implementation of the Invention)
The cover portion 46 may be abolished, and the ascending operation switch 23 and the descending operation switch 24 may be provided on the mounting portion 21.
In the hand portion 20, the lower handle portion 34 may be abolished.
In the hand portion 20, the anti-slip material 43 may be abolished. In this case, the lower portion of the side wall holding portion 31 is bent into a hook shape, the hook portion of the side wall holding portion 31 is hung on the side wall portion B1 of the luggage B, and the luggage B is held by the hand portion 20.

(7th alternative form of carrying out the invention)
In the assist device, the right and left arm portions 2 may be abolished and one arm portion 2 may be provided.
According to this structure, two wires 18 are extended from one arm portion 2, and the right mounting portion 21 (hand portion 20) is connected to one of the two wires 18, and the two wires 18 are connected. The left mounting portion 21 (hand portion 20) is connected to the other side. Alternatively, one wire 18 is extended from one arm portion 2, the end portion of the one wire 18 is branched in a bifurcated shape, and the right mounting portion 21 (hand portion 20) is attached to one of the branched portions. Connect and connect the left mounting portion 21 (hand portion 20) to the other side of the branch portion.

The ascending operation switch 23 may be provided on the left hand portion 20 (cover portion 46, mounting portion 21), and the descending operation switch 24 may be provided on the right hand portion 20 (cover portion 46, mounting portion 21). Both the ascending operation switch 23 and the descending operation switch 24 may be provided on one of the right or left hand portions 20 (cover portion 46, mounting portion 21).

The assist device may be configured not to include the waist assist portion 3. The main body 1 may be configured to be attached to the shoulder of the worker instead of the back of the worker.

The elevating device 17, the ascending operation switch 23, and the descending 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 is elevated. It may be configured not to do so.
In this case, instead of the wires 18 and 19, an elongated belt made of synthetic fiber (not shown) (corresponding to a cord) or a metal chain (not shown) (corresponding to a cord) is used. You may.

The assist device of the present invention can be applied to an assist device that is attached to an operator and assists the operator in holding a load.

1 Main body 2 Arms 18, 19 Wires (cord)
20 Hand part 28 Belt (cord)
29 Approach operation part 31 Side wall holding part 32 Extension part 33 Upper handle part (handle part)
38a shaft member (right (left) first hanging part)
38b shaft member (right (left) second hanging part)
39 Right support 41 Left support 43 Anti-slip material B Luggage B1 Luggage side wall B2 Luggage top surface FR, FL operating force

Claims (4)

The main body that can be attached to the worker
An arm portion extending forward from the main body portion and
A cord-like body extending downward from the arm portion and
Left and right hand portions connected to the extending end of the cord-like body are provided.
Each of the left and right hand portions has a side wall holding portion that is applied to the side wall portion of the luggage when it is set on the luggage, and a side wall holding portion that extends laterally from the side wall holding portion and that is used when the luggage is set on the luggage. It is equipped with an extension that can be applied to the upper surface.
An approach operation unit that generates an operation force to bring the left and right hand portions close to each other in a state where the left and right hand portions are set in the luggage is provided.
The extension portion is provided with a handle portion that can be gripped by an operator.
The approach operation portion includes a right support portion provided on the upper surface portion of the extension portion in the right hand portion and a left support portion provided on the upper surface portion of the extension portion in the left hand portion. Be prepared
From the right first hanging portion on which the right cord-like body is hung on the right supporting portion, and at a position closer to the lateral wall holding portion on the right side than the right first hanging portion in the left-right direction and from the right first hanging portion. It is provided at a lower position and is provided with a right second hanging portion on which the right cord-like body is hung.
From the left first hanging portion on which the left cord-like body is hung on the left support portion, and at a position closer to the lateral wall holding portion on the left than the left first hanging portion in the left-right direction and from the left first hanging portion. It is provided at a lower position and is provided with a left second hanging portion on which the left cord-like body is hung.
In the right cord-like body, the right side wall holding portion side in the left-right direction is in contact with the right first hanging portion, and the opposite side of the right side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the right support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand portion.
In the left cord-like body, the left side wall holding portion side in the left-right direction is in contact with the left first hanging portion, and the opposite side of the left side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand portion.
An assist device in which the extending end of the cord-shaped body on the right is connected to the hand portion on the left, and the extending end of the cord-shaped body on the left is connected to the hand portion on the right. The main body that can be attached to the worker
An arm portion extending forward from the main body portion and
A cord-like body extending downward from the arm portion and
Left and right hand portions connected to the extending end of the cord-like body are provided.
Each of the left and right hand portions has a side wall holding portion that is applied to the side wall portion of the luggage when it is set on the luggage, and a side wall holding portion that extends laterally from the side wall holding portion and that is used when the luggage is set on the luggage. It is equipped with an extension that can be applied to the upper surface.
An approach operation unit that generates an operation force to bring the left and right hand portions close to each other in a state where the left and right hand portions are set in the luggage is provided.
The extension portion is provided with a handle portion that can be gripped by an operator.
The approach operation portion includes a right support portion provided on the upper surface portion of the extension portion in the right hand portion and a left support portion provided on the upper surface portion of the extension portion in the left hand portion. Be prepared
From the right first hanging portion on which the right cord-like body is hung on the right supporting portion, and at a position closer to the lateral wall holding portion on the right side than the right first hanging portion in the left-right direction and from the right first hanging portion. It is provided at a lower position and is provided with a right second hanging portion on which the right cord-like body is hung.
From the left first hanging portion on which the left cord-like body is hung on the left support portion, and at a position closer to the lateral wall holding portion on the left than the left first hanging portion in the left-right direction and from the left first hanging portion. It is provided at a lower position and is provided with a left second hanging portion on which the left cord-like body is hung.
In the right cord-like body, the right side wall holding portion side in the left-right direction is in contact with the right first hanging portion, and the opposite side of the right side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the right support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand portion.
In the left cord-like body, the left side wall holding portion side in the left-right direction is in contact with the left first hanging portion, and the opposite side of the left side wall holding portion side in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support portion so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand portion.
An assist device in which the extension end of the cord-like body on the right and the extension end of the cord-like body on the left are connected. The right handle portion is provided at a position closer to the right side wall holding portion than the right support portion in the left-right direction on the upper surface portion of the right extension portion.
The left handle portion is any of claims 1 or 2 provided at a position closer to the left side wall holding portion than the left support portion in the left-right direction on the upper surface portion of the left extension portion. The assist device described in item 1. The assist device according to any one of claims 1 to 3, wherein a non-slip material having adsorptivity is provided on the side wall holding portion.

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