JP2019210138A - Assist instrument - Google Patents

Abstract

To provide an assist instrument comprising right and left hand parts in which reliability of holding a luggage by the hand parts is improved.SOLUTION: An assist instrument includes a hand part 20 which comprises a lateral wall holding part 31 which is brought into contact with a lateral wall part of a luggage, and an extension part 32 which is laterally extended from the lateral wall holding part 31 and is brought into contact with an upper surface part of the luggage. The assist instrument includes an approaching operation part 29 which generates an operational force for approaching the hand parts 20 each other in the state that the hand parts 20 are set to the luggage. A handle part 33, which can be gripped by an operator, is provided on the extension part 32 of the hand part 20. The approaching operation part 29 includes a right supporter 39 and a left supporter 41 which are provided on an upper surface part of the extension part 32, and a first hook part 38a and a second hook part 38b, on which left and right restiform bodies 28 are hooked, are provided on the left and right supporters 39, 41.SELECTED DRAWING: Figure 4

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 an assist device as described above, there is one disclosed in Patent Document 1.
In patent document 1, the main body part attached to an operator and the right and left arm part extended to the front side from the main body part are provided. A lifting device is provided in the main body, and right and left wires (corresponding to cords) are extended from the lifting device. A wire extends downward from the arm portion, and 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 load and the left hand portion holds the left side wall portion of the load, thereby holding the load. In a state where the baggage is held in the hand unit, the hand unit (baggage) is raised by winding the wire with the lifting device, and the hand unit (baggage) is lowered by feeding the wire with the lifting device.

JP 2006-129916 A

In the assist device as in Patent Document 1, there is room for improvement in terms of enhancing the certainty of holding the luggage by the hand unit.
An object of the present invention is to increase the certainty of holding a load by a hand unit in an assist device having right and left hand units.

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

In addition, the assist device of the present invention,
A main body attached to an operator;
An arm portion extending forward from the body portion;
A cord-like body extending downward from the arm portion;
Left and right hand portions connected to the extended ends of the cord-like body,
Each of the left and right hand parts has a lateral wall holding part that is applied to the lateral wall part of the luggage when set on the luggage, and extends laterally from the lateral wall holding part, and when the luggage is set on the luggage, An extension part applied to the upper surface part,
An approach operation unit for generating an operation force for causing the left and right hand units to approach each other in a state where the left and right hand units are set on the luggage;
The extending portion is provided with a handle portion that can be gripped by an operator,
The approaching operation portion includes a right support portion provided on an upper surface portion of the extension portion in the right hand portion, and a left support portion provided on an upper surface portion of the extension portion in the left hand portion. Provided,
A right first hanging portion on which the right cord-like body is hung on the right support portion, and 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 A right second hanging portion provided at a lower position, on which the right cord-like body is hung, and
From the left first hook part, the left first hook part on which the left cord-like body is hung on the left support part, and a position closer to the left side wall holding part than the left first hook part in the left-right direction and the left first hook part A left second hanging portion provided at a lower position and on which the left cord-like body is hung;
The right cord-like body has the right side wall holding portion side in the right and left direction in contact with the first right hanging portion, and the opposite side of the right side wall holding portion in the left and right direction is in contact with the right second hanging portion. In this state, it is supported by the right support part so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand part,
The left cord-like body has the left side wall holding portion side in the left-right direction in contact with the left first hanging portion, and the opposite side of the left side wall holding portion in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support part so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand part,
The extension end of the right cord-like body and the extension end of the left cord-like body are connected.

  According to the present invention, in a state where the load is held by the hand portion, an operating force that causes the left and right hand portions to approach each other is generated by the approach operation portion, and the right hand portion is pressed against the right lateral wall portion of the load, Since the left hand portion is pressed against the left lateral wall portion of the load, the reliability of holding the load by the hand portion is increased.

  As described above, when a load is held by the hand part, the operator should hold the handle part of the hand part and lift the hand part upward in order to assist lifting the luggage or correct the posture of the luggage. May be performed.

According to the present invention, the hand portion is provided with the horizontal wall holding portion and the extending portion, and the handle portion is provided in the extending portion.
Thus, in a state where the lateral wall holding part of the hand part is applied to the lateral wall part of the luggage, the extended part of the hand part is applied to the upper surface part of the luggage, and the luggage is held by the hand part, Holding the handle of the hand part and operating it upward will push the side wall holding part of the hand part against the side wall part of the luggage because the handle part is located on the center side of the luggage with respect to the side wall holding part of the hand part. Moment occurs.

  Therefore, according to the present invention, in addition to the function of the approach operation part, the hand part is further pressed against the lateral wall part of the load by the moment when the operator holds the handle part of the hand part and operates upward. Thus, the certainty of holding the luggage by the hand portion is improved.

Furthermore, according to the present invention, when the weight of the load is applied to the hand portion while the load is held by the hand portion, tension is generated in the cord-like body. It becomes the operating force that brings them closer together.
Thus, by devising the arrangement of the cord-like bodies, the approaching operation unit can be obtained, which is advantageous in terms of simplification of the structure.

  Here, there is only one hanging part in the support part, and when the left and right cable-like bodies are passed through and supported by the support part so as to be in contact with only one hanging part, depending on the dimensions in the left and right direction of the luggage, When tension is generated between the left and right hand parts, the right and left cable bodies spread away from each other, weakening the operating force and insufficient gripping force acting on the load. It may become.

  However, according to the present invention, the support portion is provided with two hanging portions, and the left and right cable-like bodies are passed through and supported by the left and right support portions so as to form a crank shape. Even if the right and left cable-like bodies spread away from each other when they occur, a force that twists the hand portion toward the load is generated, and the gripping force acting on the load is improved.

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

  According to the present invention, since the handle portion of the hand portion is located outside the cable-like body in the state where the load is held in the hand portion, when the operator has the handle portion of the hand portion, However, the operator can easily hold the handle portion of the hand portion.

In the present invention,
It is preferable that an anti-slip material having adsorptivity is provided on the horizontal wall holding portion.

For example, there is a baggage having nothing but the side wall part of the luggage, such as a cardboard box.
According to the present invention, since the anti-slip material having adsorptivity is provided in the horizontal wall holding part of the hand part, the horizontal wall holding part (anti-slip material) of the hand part is pressed against the horizontal wall part of the luggage such as a cardboard box. Then, the anti-slip material is adsorbed on the lateral wall portion of the luggage.

When the load is lifted by the hand part in this state, even if the lateral wall part of the luggage moves downward (even if it falls) along the horizontal wall holding part (antislip material) of the hand part, By adsorbing to the lateral wall portion of the load, sliding (movement) of the lateral wall portion of the load along the anti-slip material is stopped, and the load is held by the hand portion.
As described above, according to the present invention, it is possible to appropriately hold a load even if the load is not provided with an opening or the like but has a flush side wall portion.

It is a right view in a state where an operator wears an assist device. It is a rear view in a state where an operator wears an assist device. It is a perspective view of an assist instrument. It is a whole perspective view of a hand part, a cover part, and an approach operation part. It is a side view of a hand part. It is a vertical rear view of a hand part. It is a disassembled perspective view of a hand part and a cover part. It is a rear view which shows the state which lifts the luggage | bag placed on the floor by a hand part. It is a rear view which shows the state which lifted the load with the hand part. In 1st another form of implementation of invention, it is a rear view of a hand part, a cover part, and an approach operation part. In the 2nd other form of implementation of invention, it is a rear view of a hand part, a cover part, and an approach operation part. In the 2nd other form of implementation of invention, it is a vertical perspective view of the vicinity of an approach operation part. In the 3rd another form of implementation of this invention, it is a rear view of a hand part, a cover part, and an approach operation part.

1 to 13 show an assist device worn by an operator and used.
The front-rear direction and the left-right direction in the embodiment of the present invention are described as follows unless otherwise specified. When the operator wears 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 operator.

(Overall configuration and main body of assist device)
As shown in FIGS. 1, 2, and 3, the assist device includes a main body 1 that is attached to the back of the operator, and right and left arms that extend upward from the upper portion of the main body 1 and extend forward. A right and left lower waist support portion 3 provided at a lower portion of the portion 2 and the main body portion 1 are provided, and an attachment belt 4 for attaching to 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 frame 6, a support plate 7 connected across the right and left vertical frames 6, and the like. An attachment belt 4 is provided at the lower part of the main body 1, and a shoulder belt 5 is attached to the upper part of the front 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 portion of the rear surface of the support plate 7.

  As shown in FIG. 1 and FIG. 2, the arm portion (shoulder portion) of the worker is put on the shoulder belt 5, and the attachment belt 4 is wrapped around the waist portion of the worker and fixed, so that the main body portion is attached to the back portion of the worker. 1 is attached.

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

(Right and left waist support)
As shown in FIGS. 1, 2, and 3, the waist assisting unit 3 includes a base 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.

  An operation arm 12 is swingably supported around a horizontal axis P1 in the left-right direction at the front portion of the transmission case 11, and a wide belt-like leg belt 13 is attached to the operation arm 12. A transmission mechanism (not shown) constituted by a plurality of spur gears is provided in the transmission case 11, and an electric motor (not shown) is provided in the base 10, and the transmission mechanism is provided by the electric motor. The operating arm 12 is driven to swing 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)). . In a state where the worker wears the assist device, the right waist assisting portion 3 (transmission case 11) is positioned on the right side of the operator's waist, and the left waist assisting portion 3 (transmission case 11) is located on the left side of the operator's waist. ) Is located.

(Right and left arm, wire)
As shown in FIGS. 1, 2, and 3, the upper portions of the right and left vertical frames 6 extend obliquely upward and extend obliquely forward beyond the right and left shoulders of the operator, It is the left arm 2. Right and left support members 16 are attached to the upper end portion of the arm portion 2, and right and left pulleys (not shown) are rotatably supported by the support member 16.

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

  An outer support portion 15 is connected to an upper portion of the support plate 7, and an outer support portion 16 a is provided on the support member 16. The ends of the outer wires 18 and 19 b are connected to the outer support portion 15 and the outer support portion 16 a of the support member 16, and the inner wires 18 and 19 are connected to the lifting device 17. .

  Inners 18a and 19a of the right two wires 18 and 19 are hung on the pulley of the right support member 16 and extended downward. An attachment portion 21 is connected to the extending ends of the inner wires 18 and 19 of the right two wires 18 and 19, and the right hand portion 20 is connected to the attachment portion 21.

  Inners 18a and 19a of the two left wires 18 and 19 are hung on the pulley of the left support member 16 and extended downward. An attachment portion 21 is connected to the extending ends of the inner wires 18 a and 19 a of the two left wires 18 and 19, and the left hand portion 20 is connected to the attachment portion 21.

(lift device)
As shown in FIGS. 1 and 2, the lifting device 17 is connected to the support plate 7. A vertically extending transmission case 25 that houses a transmission mechanism (not shown), a support case 26 that is laterally coupled to the upper portion of the transmission case 25, an electric motor 27 that is laterally coupled to the lower portion of the transmission case 25, and a support case 26 The elevating device 17 is provided with four rotating bodies (not shown) supported so as to be rotatable around a laterally oriented axis.

  The ends of the outer wires 18, 19 of the right and left wires 18, 19 are connected to the outer support 15, and the inner wires 18, 19 a of the wires 18, 19 are connected 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)
4 to 7 show the right and left hand portions 20, 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 lateral wall holding portion 31 that is vertically oriented, and an extending portion 32 that is laterally extended from an upper portion of the horizontal wall holding portion 31. An upper handle portion 33 (corresponding to the handle portion) is connected upward to the upper surface portion of the extension portion 32, and a lower handle portion 34 is connected horizontally to the lower portion of the horizontal wall holding portion 31.

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

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

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

  An anti-slip material 43 is attached to a surface of the horizontal wall holding portion 31 opposite to the lower handle portion 34. The anti-slip material 43 is formed in a thin sheet shape by an adsorbent and sticky gel material or rubber material. The anti-slip material 43 is bonded to a flat 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 portions of the horizontal wall holding portion 31. By holding the handle 44 a of the substrate 44 and inserting the substrate 44 between the guide rails 45, the anti-slip material 43 and the substrate 44 are attached to the lateral wall holding portion 31.
When replacing the anti-slip material 43, while holding the handle 44 a 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. What is necessary is just to attach to the horizontal wall holding part 31.

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

  A right mounting portion 22 and a belt 28 are prepared, and a left mounting portion 22 and a belt 28 are prepared. The right attachment portion 22 can be attached to and detached from the right attachment portion 21, and the left attachment portion 22 can be attached to and detached from the left attachment portion 21.

  The right belt 28 is bent with the right lateral 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 lateral wall holding portion 31 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 cranked state, is changed in the left-right direction and is extended sideways, and the extension end of the right belt 28 is left Is connected to the left connecting portion 42 of the hand portion 20. In the right support portion 39, the right belt 28 is movable (slidable) in the longitudinal direction of the belt 28 with respect to the right hand portion 20.

  The left belt 28 is bent such that the left lateral 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 lateral wall holding portion 31 in the left-right direction 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 cranked state, is changed to the left and right direction and is extended sideways, and the extension end of the left belt 28 is Is connected to the right connection portion 40 of the hand portion 20. In the left support portion 41, the left belt 28 is movable (slidable) 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 is the right support portion 39, the right connection portion 40, 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 lateral wall holding portion 31 than the position 28 (a right outer position).
In the left hand portion 20, the upper handle portion 33 is located closer to the lateral wall holding portion 31 than the left support portion 41, the left connection portion 42, and the belt 28 in the left-right direction in the upper surface portion of the extension portion 32 ( (Left outside position).

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

  Since the attachment part 22 is attachable to and detachable from the attachment part 21, when another hand part 20 having a structure and function different from the hand part 20 shown in FIGS. It is possible to remove from the attachment portion 21 and attach another hand portion 20 directly to the attachment portion 21.

(Configuration related to ascent and descent switch for raising and lowering the hand part)
As shown in FIG. 4 and FIG. 7, the right cover portion 46 is provided, and the raising operation switch 23 is provided on the right cover portion 46. A right cover portion 46 and a left cover portion 46 having a symmetrical shape are provided, and the lower operation switch 24 is provided on the left cover portion 46.

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

The raising operation switch 23 is attached to the outer side portion 47 of the right cover portion 46, and the lowering operation switch 24 is attached to the outer side 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 portion 2 to reach the arm portions. 2 is extended to the upper end. From the opening at the upper end of the arm portion 2, the harness 14 is extended and extended downward, the right harness 14 is connected to the raising operation switch 23, and the left harness 14 is connected to the lowering operation switch 24. ing.

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

(Attaching and removing the cover from the hand)
As shown in FIGS. 4, 5, and 6, the surface fastener 52 of the cover portion 46 is abutted against and connected to the surface fastener 35 of the upper handle portion 33 of the hand portion 20, thereby connecting the cover portion 46 of the hand portion 20. It can be attached to the upper handle portion 33, and the raising operation switch 23 (lowering operation switch 24) is attached to the hand portion 20 through the cover portion 46.

  In the same manner as described above, the surface fastener 52 of the cover portion 46 is abutted against and connected to the surface fastener 36 of the lower handle portion 34 of the hand portion 20, thereby connecting the cover portion 46 to the lower handle portion 34 of the hand portion 20. The ascending operation switch 23 (the descending operation switch 24) is attached to the hand unit 20 via the cover unit 46.

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

  The cover portion 46 is removed from the hand portion 20 by moving the surface fastener 52 of the cover portion 46 away from the surface fasteners 35 and 36 of the upper handle portion 33 (lower handle portion 34) of the hand portion 20, and ascending operation is performed. The switch 23 (the lowering operation switch 24) is removed from the hand unit 20.

  When various hand portions 20 are attached to the attachment portion 21 (when they are replaced), the surface fastener 52 of the cover portion 46 is connected to the surface fastener (not shown) of the replaced hand portion 20, thereby 46 (the ascending operation switch 23 and the descending operation switch 24) can be shared by the various hand units 20.

(Elevator operation by operating the ascent and descent switches)
As shown in FIGS. 1 and 2, when the raising operation switch 23 is pushed, in the lifting device 17, the rotating body is rotationally driven to the winding side by the electric motor 27, and the inners 18 a and 19 a of the wires 18 and 19 are rotated. The hand part 20 rises by being wound around the body.

  When the lowering operation switch 24 is pushed, the electric motor 27 rotates the rotating body toward the feeding side, the inners 18a and 19a of the wires 18 and 19 are drawn out from the rotating body, and the hand unit 20 is lowered.

When the push 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 provided 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 hand part)
As shown in FIG. 8, a cubical load B such as a cardboard box is assumed.
As shown in FIG. 1 and FIG. 2, when an operator wearing the assisting instrument puts out the right hand and the left hand and has the upper handle part 33 or the lower handle part 34 of the hand part 20, the hand part 20 The horizontal wall holding portion 31 is directed in the vertical direction, and the extending portion 32 of the hand portion 20 is directed in the horizontal direction.

As shown in FIG. 8, it is assumed that the luggage B is placed on the floor with respect to the worker wearing the assist device.
In the right hand portion 20, the operator applies the lateral wall holding portion 31 (slip prevention material 43) to the right lateral wall portion B 1 of the load B while applying the extended portion 32 to the upper surface portion B 2 of the load B. In the left hand part 20, the lateral wall holding part 31 (antislip material 43) is applied to the left lateral wall part B <b> 1 of the luggage B while the extending part 32 is applied to the upper surface part B <b> 2 of the luggage B. Thereby, the anti-slip material 43 of the hand part 20 is adsorbed to the lateral wall part B1 of the luggage B.

  For example, when the operator performs the above-described operation while holding the upper handle portion 33 of the hand portion 20, the operator does not have to bend the waist portion down so much that the horizontal wall holding portion 31 (slippery) of the hand portion 20 is required. The stopper 43) can be applied to the lateral wall B1 of the load B.

In the state shown in FIG. 8, when the hand unit 20 is raised, the load B is lifted together with the hand unit 20 by the adsorption action of the anti-slip material 43 of the hand unit 20.
Depending on the weight of the load B, even if the horizontal wall portion B1 of the load B tries to move downward (being dropped) along the horizontal wall holding portion 31 (slip prevention material 43) of the hand portion 20, the hand portion 20 slips. Due to the adsorbing action of the stopper 43, the movement of the load B to the lower side of the lateral wall portion B <b> 1 is stopped, and the load B is held by the hand portion 20.

  When the load B is lifted by the hand portion 20, the weight of the load B is applied to the hand portion 20, and tension is generated on the belt 28. The right belt 28 generates an operation force FL that causes the left hand unit 20 to approach the right hand unit 20, and the left belt 28 causes the right hand unit 20 to approach the left hand unit 20. An operating force FR to be generated is generated.

  Here, when the shaft member 38a is not provided, depending on the relationship between the lateral dimension of the load B and the distance between the left and right arms 2, when the load is applied to the belt 28 with the load B sandwiched between the left and right hand portions 20, In addition, the belt 28 spreads in a direction away from each other, and the operating forces FL and FR are 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 be in a crank shape, and the left belt 28 is also passed through the left support portion 41 so as to be in a crank shape. Even when the belt 28 spreads away from each other, a force that twists 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 approaching operation unit 29, the operating forces FR and FL that cause the right and left hand units 20 to approach each other are generated, and the lateral wall holding unit 31 (slip prevention material 43) of the right hand unit 20 is loaded. The left side wall portion B1 of the left hand portion 20 is pressed against the left side wall portion B1 of the luggage B by being pressed by the right side wall portion B1 of B. Thereby, the certainty of holding | maintenance of the load B by the hand part 20 is improved.

(Auxiliary operation of the worker when holding the luggage with the hand)
When the load B is held by the hand unit 20, an operator may assist the lifting of the load B or correct the posture of the load B. In this case, the operator may perform an operation of holding the upper handle portion 33 of the hand portion 20 and lifting the hand portion 20 upward.

  As shown in FIG. 8, in a state where the horizontal wall holding portion 31 of the hand portion 20 is applied to the horizontal wall portion B1 of the luggage B, the operator operates the upper portion 33 of the hand portion 20 to operate upward ( (Refer to direction A1), a moment M1 is generated that presses the lateral wall holding portion 31 of the hand portion 20 against the lateral wall portion B1 of the baggage B around the connection portion between the lateral wall holding portion 31 and the extending portion 32 in the hand portion 20. To do.

  Thereby, in addition to the function of the approach operation unit 29 for generating the operation forces FR and FL for causing the right and left hand units 20 to approach each other, the operator holds the upper handle 33 of the hand unit 20 to operate upward. Due to the moment M1 due to the movement, the lateral wall holding portion 31 (antislip material 43) of the hand portion 20 is further pressed against the lateral wall portion B1 of the load B, and the certainty of holding the load B by the hand portion 20 is ensured. Enhanced.

  As shown in FIG. 8, when the lateral wall holding portion 31 of the hand portion 20 is applied to the lateral wall portion B1 of the load B, when the load B is lifted from the floor, the anti-slip material 43 of the hand portion 20 is not attracted. When it is considered sufficient, the operator holds the lower handle portion 34 of the hand portion 20 and presses the lateral wall holding portion 31 (slip prevention material 43) of the hand portion 20 against the lateral wall portion B1 of the load B, thereby The certainty of holding the luggage B by the unit 20 can be increased.

  As shown in FIG. 9, if it is considered that the anti-slip material 43 of the hand part 20 is not sufficiently adsorbed even after the luggage B is lifted from the floor, the operator holds the lower handle part 34 of the hand part 20. , And the lateral wall holding part 31 (antislip material 43) of the hand part 20 is pressed against the lateral wall part B1 of the luggage B, so that the certainty of holding the luggage B by the hand part 20 can be enhanced.

After the load B is lifted from the floor, the load B is often located on the front side of the chest or abdomen of the operator, so that the lower handle portion 34 of the hand portion 20 is positioned so as to be easily held by the operator. Thus, the operability is improved.
If the cover part 46 (the raising operation switch 23 and the lowering operation switch 24) is replaced from the upper handle part 33 of the hand part 20 to the lower handle part 34, the operability is improved.

(Working form of assist device)
For example, when placing luggage B placed on a pallet or floor on a high shelf or truck bed, the operator bends the waist down or bends the knee and drops the waist, so that the luggage on the pallet or floor Hold B with your hand and hold your baggage B with your hand extended down, extend your waist up or stand up, lift the baggage B with your hand, and put the baggage B on a high shelf or truck bed It is supposed to be placed.

  In a state where the worker wearing the assist device performs the above-described work, the control device 8 activates the waist assisting unit 3 and the lifting device 17 based on the pressing operation of the lifting operation switch 23 and the lowering operation switch 24. Will be described.

  As shown in FIGS. 1 and 2, the electric motor 27 of the elevating device 17 is operated unless the operator pushes both the ascending operation switch 23 and the descending operation switch 24 in a state where the operator wears the assist device. 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 operator bends the waist down or bends the knee and drops the waist, the operation arm 12 swings so as to follow the thigh of the operator. The operation of the worker is not hindered.

  When the operator bends the lower back (bends the knee and lowers the lower back) and holds the pallet or floor load B, when the operator pushes the lowering operation switch 24, the electric motor 27 in the lifting device 17 is operated. Operates to the feeding side, the inner portions 18a and 19a of the wires 18 and 19 are fed out, and the hand portion 20 is lowered.

  When the pushing operation of the lowering operation switch 24 is stopped, the electric motor 27 is stopped and the hand unit 20 is stopped. Therefore, the operator can perform the hand operation as described in the above-mentioned (holding operation of the luggage by the hand unit). The load 20 is held by the unit 20.

As described in the previous section (elevating device), the electric motor 27 is provided with an electromagnetic brake (not shown), and the electromagnetic brake automatically enters a braking state when the electric motor 27 is stopped or not energized. .
In the state where the electric motor 27 is stopped, the inner portions 18a and 19a of the wires 18 and 19 are not drawn out from the lifting device 17, and the hand portion 20 does not move even if the weight of the load B is applied to the hand portion 20 as will be described later. It will not descend.

  The operator lifts the load B by extending the waist portion (by standing up) while holding the load B with the hand unit 20. When the operator pushes the raising operation switch 23, the operation arm 12 is driven downward in the lower back assisting portion 3, and the operator's thigh is operated downward to extend the waist (rise up). ) Is assisted.

  After the operator has stood up in a state in which the ascending operation switch 23 has been pressed, if the operator has detected that the operating arm 12 has reached a position that is substantially downward in the lower back assisting section 3, the operator has stood up (rises up) ) Is determined, and the electric motor of the lower back assistance portion 3 is in a stopped state (free rotation state).

  Next, in the lifting / lowering device 17, the electric motor 27 operates to the winding side, the inner portions 18a and 19a of the wires 18 and 19 are wound, and the hand portion 20 is raised. When the hand unit 20 rises to a desired position, the push operation of the raising operation switch 23 is stopped, whereby the electric motor 27 is stopped and the hand unit 20 is stopped.

  The worker walks to a high shelf on which the luggage B is to be placed, a truck bed, or the like. When the worker arrives at a high shelf, a truck bed, etc., and the operator pushes the lowering operation switch 24, the electric motor 27 is actuated to the feeding side in the elevating device 17, and the inner wires 18a, 19a, 19a is extended and the hand part 20 descends.

  The operator places the luggage B on a high shelf, a truck bed or the like, and removes the hand unit 20 from the luggage B. When the luggage B is placed on a high shelf, a truck bed or the like, the initial state is restored, and the same operation is performed on the next luggage B.

(First embodiment of the invention)
In the hand part 20, when attaching the upper handle part 33 to the upper surface part of the extension part 32, you may attach as the following description.

  As shown in FIG. 10, in the right and left hand parts 20, a fulcrum part 54 is connected to the upper surface part of the extension part 32, and an intermediate part of the support member 55 is arranged around the lateral axis P <b> 2 of the fulcrum part 54. Is supported in a swingable manner like a seesaw. The upper handle 33 is supported at the end of the support member 55 on the right support portion 39 (left support portion 41) side so as to be swingable around a lateral axis P3 parallel to the axis P2.

  With the above structure, the lateral wall holding portion 31 (anti-slip material 43) is applied to the load B placed on the floor while the extension portion 32 is applied to the upper surface portion B2 of the load B in the right hand portion 20. Apply to the right side wall B1 of the load B. In the left hand part 20, the lateral wall holding part 31 (slip prevention material 43) is applied to the left lateral wall part B 1 of the luggage B while the extended part 32 is applied to the upper surface part B 2 of the luggage B.

  In the state shown in FIG. 10, when lifting the load B, if the operator holds the upper handle portion 33 of the hand portion 20 and performs an operation of lifting the hand portion 20 upward, The side of the handle 33 is slightly lifted, and the side opposite to the upper handle 33 of the support member 55 is pressed downward near the upper side of the horizontal wall holding unit 31.

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

(Second embodiment of 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 rod members 38 a, 38 b, 38 c in the shape of round bars are attached to the bracket 37 in the lateral direction.

  In the bracket 37, the shaft member 38b is disposed in a position closer to the lateral wall holding portion 31 than the shaft member 38a and in a position below the shaft member 38a in the left-right direction. Further, the shaft member 38c in the right hand portion 20 is disposed below the shaft member 38b in the vertical direction, and the shaft member 38c in the left hand portion 20 is disposed 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 38 a and 38 b are the right support portion 39, and the shaft member 38 c is the right connection portion 40. In the left hand portion 20, the shaft members 38 a and 38 b are the left support portion 41, and the shaft member 38 c is the left connection portion 42.

  The right belt 28 is bent with the right lateral 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 lateral wall holding portion 31 in the left-right direction in contact with the shaft member 38b. It passes between the right support part 39 (shaft members 38a and 38b) and the right connection part 40 (shaft member 38c) of the right hand part 20 so as to be in a state (crank shape), and changes its direction in the left-right direction. The extension end of the right belt 28 is connected to the left connection part 42 (shaft member 38c) of the left hand part 20. In the right support portion 39 (shaft members 38a and 38b), the right belt 28 is movable (slidable) in the longitudinal direction of the belt 28 with respect to the right hand portion 20.

  The left belt 28 is bent with the left lateral wall holding portion 31 side in the left-right direction of the left belt 28 in contact with the shaft member 38a and the opposite side of the left lateral wall holding portion 31 in the left-right direction in contact with the shaft member 38b. The left support part 41 (shaft members 38a, 38b) of the left hand part 20 is passed under the left hand part 20 so as to be in a state (crank shape). 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 38 a and 38 b), the left belt 28 is movable (slidable) 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 is arranged vertically so as to overlap in plan view.

  In the right hand portion 20, the shaft member 38c is disposed between the shaft members 38a and 38b in the vertical direction, and in the left hand portion 20, the shaft member 38c is disposed below the shaft member 38b in the vertical direction. Anyway. In this way, in the bracket 37 between the right and left hand portions 20, 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 plan view. So as to be arranged up and down.

(Third Another Embodiment of the Invention)
The approach operation unit 29 may be configured as described below.

  As shown in FIG. 13, the right hand unit 20 includes a right support unit 39 and the right connection unit 40 is omitted. The left hand portion 20 includes a left support portion 41 and the left connection portion 42 is eliminated.

  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 load B is lifted by the hand portion 20, operating forces FR and FL that cause the right and left hand portions 20 to approach each other are generated by the tension of the right and left belts 28.
Further, even when the belt 28 spreads away from each other, a force that twists the hand portion 20 toward the load B is generated.
In this case, the connecting member 53 may be eliminated, and the right belt 28 and the left belt 28 may be configured by one continuous belt 28.

(Fourth embodiment of the invention)
In the approach operation unit 29 shown in FIGS. 4 to 12, the attachment unit 22 and the belt 28 may be eliminated.

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

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

(Fifth embodiment of the invention)
In the approach operation unit 29 shown in FIG. 13, the attachment unit 22 and the belt 28 may be eliminated.

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

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

(Sixth embodiment of the invention)
The cover part 46 may be abolished, and the ascending operation switch 23 and the descending operation switch 24 may be provided in the attachment part 21.
In the hand part 20, the lower handle part 34 may be eliminated.
In the hand part 20, the anti-slip material 43 may be eliminated. In this case, the lower portion of the horizontal wall holding portion 31 is bent into a hook shape, the hook portion of the horizontal wall holding portion 31 is hung on the horizontal wall portion B1 of the load B, and the load B is held by the hand portion 20.

(Seventh embodiment of the invention)
In the assist device, the right and left arm portions 2 may be eliminated and a single arm portion 2 may be provided.
According to this structure, the two wires 18 are extended from one arm portion 2, the right attachment portion 21 (hand portion 20) is connected to one of the two wires 18, and the two wires 18 are The left attachment portion 21 (hand portion 20) is connected to the other side. Alternatively, one wire 18 is extended from one arm portion 2, the end of one wire 18 is branched into a bifurcated shape, and the right attachment portion 21 (hand portion 20) is attached to one of the branch portions. Connect the left attachment part 21 (hand part 20) to the other of the branch parts.

  The ascending operation switch 23 may be provided in the left hand part 20 (cover part 46, attachment part 21), and the descending operation switch 24 may be provided in the right hand part 20 (cover part 46, attachment part 21). Both the raising operation switch 23 and the lowering operation switch 24 may be provided in one of the right and left hand portions 20 (the cover portion 46 and the attachment portion 21).

  The assist device may be configured not to include the lower back assistance portion 3. You may comprise the main-body part 1 so that it may attach to an operator's shoulder part instead of an operator's back part.

The lifting device 17, the raising operation switch 23 and the lowering operation switch 24 are abolished, the wires 18 and 19 are connected to the main body portion 1 and the arm portion 2, the position of the hand portion 20 is fixed, and the hand portion 20 is raised and lowered. You may comprise so that it may not perform.
In this case, instead of the wires 18 and 19, a synthetic fiber elongated belt (not shown) (corresponding to a cord) or a metal chain (not shown) (corresponding to a cord) is used. May be.

  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 the load.

1 Body 2 Arm 18/19 Wire
20 Hand part 28 Belt (cord)
29 Approaching operation part 31 Horizontal wall holding part 32 Extension part 33 Upper handle part (handle part)
38a Shaft member (right (left) first hook)
38b Shaft member (right (left) second hook)
39 Right support part 41 Left support part 43 Non-slip material B Luggage B1 Side wall of luggage B2 Upper surface of luggage FR, FL Operating force

Claims (4)

A main body attached to an operator;
An arm portion extending forward from the body portion;
A cord-like body extending downward from the arm portion;
Left and right hand portions connected to the extended ends of the cord-like body,
Each of the left and right hand parts has a lateral wall holding part that is applied to the lateral wall part of the luggage when set on the luggage, and extends laterally from the lateral wall holding part, and when the luggage is set on the luggage, An extension part applied to the upper surface part,
An approach operation unit for generating an operation force for causing the left and right hand units to approach each other in a state where the left and right hand units are set on the luggage;
The extending portion is provided with a handle portion that can be gripped by an operator,
The approaching operation portion includes a right support portion provided on an upper surface portion of the extension portion in the right hand portion, and a left support portion provided on an upper surface portion of the extension portion in the left hand portion. Provided,
A right first hanging portion on which the right cord-like body is hung on the right support portion, and 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 A right second hanging portion provided at a lower position, on which the right cord-like body is hung, and
From the left first hook part, the left first hook part on which the left cord-like body is hung on the left support part, and a position closer to the left side wall holding part than the left first hook part in the left-right direction and the left first hook part A left second hanging portion provided at a lower position and on which the left cord-like body is hung;
The right cord-like body has the right side wall holding portion side in the right and left direction in contact with the first right hanging portion, and the opposite side of the right side wall holding portion in the left and right direction is in contact with the right second hanging portion. In this state, it is supported by the right support part so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand part,
The left cord-like body has the left side wall holding portion side in the left-right direction in contact with the left first hanging portion, and the opposite side of the left side wall holding portion in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support part so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand part,
An assist device in which an extension end of the right cord-like body is connected to the left hand portion, and an extension end of the left cord-like body is connected to the right hand portion. A main body attached to an operator;
An arm portion extending forward from the body portion;
A cord-like body extending downward from the arm portion;
Left and right hand portions connected to the extended ends of the cord-like body,
Each of the left and right hand parts has a lateral wall holding part that is applied to the lateral wall part of the luggage when set on the luggage, and extends laterally from the lateral wall holding part, and when the luggage is set on the luggage, An extension part applied to the upper surface part,
An approach operation unit for generating an operation force for causing the left and right hand units to approach each other in a state where the left and right hand units are set on the luggage;
The extending portion is provided with a handle portion that can be gripped by an operator,
The approaching operation portion includes a right support portion provided on an upper surface portion of the extension portion in the right hand portion, and a left support portion provided on an upper surface portion of the extension portion in the left hand portion. Provided,
A right first hanging portion on which the right cord-like body is hung on the right support portion, and 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 A right second hanging portion provided at a lower position, on which the right cord-like body is hung, and
From the left first hook part, the left first hook part on which the left cord-like body is hung on the left support part, and a position closer to the left side wall holding part than the left first hook part in the left-right direction and the left first hook part A left second hanging portion provided at a lower position and on which the left cord-like body is hung;
The right cord-like body has the right side wall holding portion side in the right and left direction in contact with the first right hanging portion, and the opposite side of the right side wall holding portion in the left and right direction is in contact with the right second hanging portion. In this state, it is supported by the right support part so as to be movable in the longitudinal direction of the cord-like body with respect to the right hand part,
The left cord-like body has the left side wall holding portion side in the left-right direction in contact with the left first hanging portion, and the opposite side of the left side wall holding portion in the left-right direction is in contact with the right second hanging portion. In this state, it is supported by the left support part so as to be movable in the longitudinal direction of the cord-like body with respect to the left hand part,
An assist device in which an extension end of the right cord-like body and an extension end of the left cord-like body are connected. The right handle part is provided at a position closer to the right side wall holding part than the right support part in the left-right direction in the upper surface part of the right extension part,
The left handle part is provided in a position closer to the left side wall holding part than the left support part in the left-right direction in the upper surface part of the left extension part. The assist device according to claim 1.   The assist device according to any one of claims 1 to 3, wherein an anti-slip material having adsorptivity is provided in the horizontal wall holding portion.

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