WO2019235618A1 - Assist device - Google Patents

Abstract

[Problem] To increase reliability in holding luggage with hand parts in an assist device which is provided with right and left hand parts. [Solution] Each of hand parts 20 is provided with a horizontal wall holding part 31 that abuts on the horizontal wall of luggage and an extension part 32 that extends laterally from the horizontal wall holding part 31 and abuts on the upper surface of the luggage. The present invention is provided with an approach operation part 29 that generates an operation force for causing the hand parts 20 to approach each other while the hand parts 20 are set on the luggage. The extension part 32 of the hand part 20 is provided with a handle part 33 that can be gripped by an operator. The approach operation part 29 is provided with a right support 39 and a left support 41 which are provided on the upper surface of the extension 32. The left and right supports 39, 41 are each provided with a first hooking part 38a and a second hooking part 38b for hooking left and right cord-like bodies 28 on.

Description

Assist equipment

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

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.

Hold the luggage by holding the right side wall of the luggage with the right hand part and holding the left side wall of the luggage with the left hand part. 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 2016-129916 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.

An assist device according to the present invention includes a main body part attached to an operator, an arm part extending forward from the main body part, a cord-like body extending downward from the arm part, and the cord-like body Left and right hand portions connected to the extending ends of the left and right hand portions, a lateral wall holding portion that is applied to the lateral wall portion of the load when set on the load, and the horizontal wall holding portion. And the left and right hand parts in a state in which the left and right hand parts are set on the luggage. An approach operating part that generates an operating force for bringing the two approaching each other, a handle part that can be gripped by an operator is provided in the extension part, and the extension in the right hand part is provided in the approach operation part. Right support part provided on the upper surface of the part A left support portion provided on an upper surface portion of the extension portion of the left hand portion, a right first hook portion on which the right cord-like body is hung on the right support portion, and a left-right direction A right second hanging portion that is provided at a position closer to the right lateral wall holding portion than the right first hanging portion and below the right first hanging portion, and on which the right cord-like body is hung. A first left hanging portion on which the left cord-like body is hung on the left support portion, and a position closer to the left lateral wall holding portion than the first left hanging portion in the left-right direction and the first left hanging portion And a second left hanging portion on which the left cord-like body is hung, and the right cord-like body has the right first lateral wall holding portion side in the left-right direction. The right side in the left-right direction is in contact with the hanging portion and the opposite side of the right side wall holding portion side is the second right side. In the state of being in contact with the right hand portion, the right hand portion is supported by the right support portion so as to be movable in the longitudinal direction of the cord-like body, and the left cord-like body is the left lateral wall in the left-right direction. The cord-like shape with respect to the left hand portion with the holding portion side in contact with the left first hanging portion and the opposite side of the left lateral wall holding portion side in the left-right direction in contact with the right second hanging portion It is supported by the left support part so as to be movable in the longitudinal direction of the body, the extension end of the right cord-like body is connected to the left hand part, and the extension end of the left cord-like body is the right side Connected to the hand unit.

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

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 portion of the hand portion is applied to the lateral wall portion of the luggage, the extended portion of the hand portion is applied to the upper surface portion of the luggage, and the luggage is held by the hand portion, Holding the handle of the hand unit and operating it upward will push the side wall holder of the hand unit against the side wall of the baggage by positioning the handle on the center side of the bag with respect to the side wall holder of the hand unit. 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.

Further, 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 portion is provided at a position closer to the right side wall holding portion on the right side than the right support portion in the left-right direction in the upper surface portion of the right extension portion. It is preferable that the hand 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 the horizontal wall holding portion is provided with an anti-slip material having adsorptivity.

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.

An assist device according to the present invention includes a main body part attached to an operator, an arm part extending forward from the main body part, a cord-like body extending downward from the arm part, and the cord-like body Left and right hand portions connected to the extending ends of the left and right hand portions, a lateral wall holding portion that is applied to the lateral wall portion of the load when set on the load, and the horizontal wall holding portion. And the left and right hand parts in a state in which the left and right hand parts are set on the luggage. An approach operating unit that generates an operating force that causes the two to approach each other, a first handle unit that can be gripped by an operator is provided, and a movable body attached to each of the left and right hand units is provided. The position of one handle is the left and right So as to be displaced at least in the vertical direction with respect to the hand portion, the movable body is movable.

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.

When the load is held by the hand portion as described above, the operator holds the first handle portion of the movable body and moves the entire upper portion upward so that the operator can assist in lifting the load and correct the posture of the load. To hold the first handle part, and to lower the entire hand part downward, in order to perform the operation of pulling it up or to place the load lifted by the operator at the predetermined position. At this time, an excessive force may be generated in the direction of pulling the first handle portion upward. In this case, if the first handle part is directly attached to the horizontal wall holding part instead of the movable body, the first handle part moves upward with respect to the luggage while the horizontal wall holding part is separated from the lateral wall part of the luggage. There is a possibility that the state where the baggage is held by the hand unit is released at an unexpected timing.

According to the present invention, the first hand portion is attached to the movable body, and the movable body is movable so that the position of the first handle portion is displaced at least in the vertical direction with respect to the left and right hand portions.
As a result, as described above, even if an excessive force is generated in the direction in which the first handle portion is pulled upward, the movable body to which the first handle portion is attached so as to follow this force is independent. By displacing in the vertical direction, it is possible to suppress the occurrence of a situation in which the horizontal wall holding portion is separated from the horizontal wall portion of the load and the state where the load is held by the hand portion is released. Therefore, according to the present invention, the certainty of the holding of the load by the hand unit is enhanced.

In the present invention, the movable body is pivotally supported by attachment portions provided on the left and right hand portions, and the movable body is moved toward and away from the lateral wall holding portion. It is preferable to swing around the mounting portion.

According to the present invention, the operator can swing the movable body with the first handle portion so that the first handle portion approaches the horizontal wall holding portion. Therefore, when the operator holds the first handle portion and presses the movable body against the horizontal wall holding portion, the horizontal wall holding portion is appropriately pressed against the horizontal wall portion of the load, and the reliability of holding the load by the hand portion is ensured. Can be increased. In addition, when an excessive force is generated in the direction of pulling the first handle upward, the movable body swings independently so as to follow this force and the state where the load is held by the hand is released. The occurrence of such a situation is suppressed. Therefore, according to the present invention, the certainty of holding the load by the hand unit is improved.

In the present invention, it is preferable that the movable body is urged so as to approach the horizontal wall holding portion.

According to the present invention, since the movable body is urged so as to approach the lateral wall holding portion, the movable body can be operated without the operator having the first handle consciously pressing the movable body against the lateral wall holding portion. Is pressed against the horizontal wall holding portion. Furthermore, when the operator holds the first handle portion and an excessive force is generated in the direction of pulling the first handle portion upward, the movable body moves from the lateral wall holding portion against the biasing force. Occurrence of a situation in which the state where the baggage is held by the hand portion and the baggage is released is suppressed. Therefore, according to the present invention, the certainty of holding the load by the hand unit is improved.

In the present invention, it is preferable that the extending portion is provided with a second handle portion that can be gripped by an operator.

According to the present invention, in the state where the lateral wall holding portion of the hand portion is applied to the lateral wall portion of the load and the extension portion of the hand portion is applied to the upper surface portion of the load and the load is held by the hand portion. When the person holds the second handle portion of the hand portion and operates it upward, the second handle portion is positioned 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 A moment is generated that presses against the lateral wall holding portion of the load.

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 luggage by the moment when the operator operates the second handle part of the hand part to operate upward. Thus, the certainty of holding the luggage by the hand portion is improved.

It is a figure which shows 1st Embodiment, Comprising: It is a right view in the state in which the operator equipped with the assist instrument. It is a figure which shows 1st Embodiment, Comprising: It is a rear view in the state which the operator equipped with the assist instrument. It is a figure which shows 1st Embodiment, Comprising: It is a perspective view of an assist instrument. It is a figure which shows 1st Embodiment, Comprising: It is a whole perspective view of a hand part, a cover part, and an approach operation part. It is a figure which shows 1st Embodiment, Comprising: It is a side view of a hand part. It is a figure which shows 1st Embodiment, Comprising: It is a vertical rear view of a hand part. It is a figure which shows 1st Embodiment, Comprising: It is a disassembled perspective view of a hand part and a cover part. It is a figure which shows 1st Embodiment, Comprising: It is a rear view which shows the state which lifts the load placed on the floor by a hand part. It is a figure which shows 1st Embodiment, Comprising: It is a rear view which shows the state which lifted the load with the hand part. It is a figure which shows 1st Embodiment, Comprising: In 1st another form of implementation of this invention, it is a rear view of a hand part, a cover part, and an approach operation part. It is a figure which shows 1st Embodiment, Comprising: In 2nd another form of implementation of this invention, it is a rear view of a hand part, a cover part, and an approach operation part. It is a figure which shows 1st Embodiment, Comprising: In 2nd another form of implementation of this invention, it is a vertical perspective view of the vicinity of an approach operation part. It is a figure which shows 1st Embodiment, Comprising: In 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. It is a figure which shows 2nd Embodiment, Comprising: It is a right view in the state which the operator equipped with the assist instrument. It is a figure which shows 2nd Embodiment, Comprising: It is a rear view in the state which the operator equipped with the assist instrument. It is a figure which shows 2nd Embodiment, Comprising: It is a perspective view of an assist instrument. It is a figure which shows 2nd Embodiment, Comprising: It is a whole perspective view of a hand part, a cover part, and an approach operation part. It is a figure which shows 2nd Embodiment, Comprising: It is a vertical rear view of a hand part. It is a figure which shows 2nd Embodiment, Comprising: It is a disassembled perspective view of a hand part and a cover part. It is a figure which shows 2nd Embodiment, Comprising: It is a rear view which shows the state which lifted the load with the hand part. It is a figure which shows 2nd Embodiment, Comprising: It is a rear view which shows the state which lifted the load with the hand part. It is a figure which shows 2nd Embodiment, Comprising: In 1st another form of implementation of this invention, it is a vertical rear view of a hand part, a cover part, and an approach operation part. It is a figure which shows 2nd Embodiment, Comprising: In 4th another form of implementation, it is a vertical rear view of a hand part.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described based on the drawings.
FIGS. 1 to 13 show assist devices worn by an operator.
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 is provided with a right and left vertical frame 6, a support plate 7 connected over the right and left vertical frames 6, and the like, and has a frame shape. 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.

The outer support 15 is connected to the upper part of the support plate 7, and the outer support 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. .

The inner wires 18a, 19a of the two right wires 18, 19 are hung on the pulley of the right support member 16 and extended downward. 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.

The inner wires 18a, 19a of the two left wires 18, 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)
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 part 20 is formed by bending a plate material, and includes a lateral wall holding part 31 that is vertically oriented and an extending part 32 that is laterally extended from the upper part of the horizontal wall holding part 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 opposite to 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 shaft members 38 a and 38 b are the right support portion 39, and the other bracket 37 and shaft member 38 b are the right connection portion 40. In the left hand portion 20, one bracket 37 and the shaft members 38 a and 38 b are the left support portion 41, and the other bracket 37 and the 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 the 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 of the hand. 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 horizontal wall holding part 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, and the extension end of the right belt 28 is the left side. 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 portion 22 can be freely attached to and detached from the attachment portion 21, when another hand portion 20 having a different structure and function from the hand portion 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 part 48, a hook-and-loop fastener 52 (magic tape (registered trademark)) is attached to the surface of the lateral side part 49 on the upper side part 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 unit 20, the operator applies the lateral wall holding unit 31 (slip prevention material 43) to the right lateral wall B <b> 1 of the luggage B while applying the extension 32 to the upper surface B <b> 2 of the luggage 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 part 20, the weight of the load B is applied to the hand part 20, and tension is generated in the belt 28. The right belt 28 generates an operating force FL1 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 FR1 to be generated is generated.

Here, in the absence of the shaft member 38a, depending on the relationship between the lateral dimension of the load B and the distance between the left and right arm portions 2, tension was generated in the belt 28 with the load B sandwiched between the left and right hand portions 20. In some cases, the belt 28 spreads away from each other, and the operating forces FL1 and FR1 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 FR1 and FL1 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.

Accordingly, in addition to the function of the approach operation unit 29 that generates the operation forces FR1 and FL1 that cause the right and left hand units 20 to approach each other, the operator holds the upper handle 33 of the hand unit 20 and operates the upper side. 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 in front of the operator's chest or abdomen, 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 worker lifts the load B by extending the waist (with standing up) while holding the load B by 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 on 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 should be placed or a truck bed. 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 worker places the luggage B on a high shelf, a truck bed, etc., 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 first embodiment)
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 structure described above, 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 it to the right side wall B1 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.

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 in the first embodiment)
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 shaft 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 the shaft member 38c does not interfere with the belt 28 when the belt 28 is cranked on the shaft members 38a and 38b.

In the right hand part 20, the shaft members 38 a and 38 b are the right support part 39, and the shaft member 38 c is the right connection part 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. It passes under the left support part 41 ( shaft members 38a, 38b) of the left hand part 20 so as to be in a state (crank shape), and is changed in the left-right direction and extended sideways. 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 in the First Embodiment)
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 abolished. 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 FR1 and FL1 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 first embodiment)
In the approach operation portion 29 shown in FIGS. 4 to 12, the attachment portion 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 extending ends of the inner wires 18 a and 19 a of the right wires 18 and 19 are connected to the left connecting 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 extending 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 first embodiment)
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 in the first embodiment)
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 first embodiment)
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).

Assist equipment may be configured not to include the waist assisting 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.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described based on the drawings.
FIGS. 14 to 23 show assist devices worn by an operator.
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. 14, 15, and 16, the assist device includes a main body portion 101 attached to the back of the operator, and right and left arms extending upward from the upper portion of the main body portion 101 and extending to the front side. Part 102, right and left lower back support parts 103 provided at the lower part of the main body part 101, an attachment belt 104 for attaching to an operator, and right and left shoulder belts 105 are provided.

The main body 101 has a frame shape including a right and left vertical frame 106, a support plate 107 connected to the right and left vertical frames 106, and the like. An attachment belt 104 is provided at the lower part of the main body 101, and a shoulder belt 105 is attached to the upper part of the front surface of the support plate 107. A control device 108 is attached to the upper and lower middle portions of the rear surface of the support plate 107, and a battery 109 is attached to the lower portion of the rear surface of the support plate 107.

As shown in FIGS. 14 and 15, an operator's arm part (shoulder part) is put on the shoulder belt 105, and the attachment belt 104 is wrapped around and fixed to the operator's waist to fix the main body part on the operator's back part. 1 is attached.

The weight of the assist device and the load B (see FIG. 20) is mainly applied to the operator's waist through the attachment belt 104, and the weight of the assist device and the load B is stably supported by the operator's waist. The right and left shoulder belts 105 mainly exhibit a function of stopping the state in which the main body portion 101 is about to move away from the operator's back.

(Right and left waist support)
As shown in FIGS. 14, 15, and 16, the waist assisting portion 103 includes a base portion 110, a transmission case 111, an operation arm 112, a leg belt 113, and the like. The base portion 110 is supported on the front portion of the lower portion of the support plate 107 so that the mounting position can be changed in the left-right direction, and the transmission case 111 is connected forward to the outer end portion of the base portion 110.

The operation arm 112 is supported in a swingable manner around the horizontal axis P4 in the left-right direction at the front portion of the transmission case 111, and a wide belt-like leg belt 113 is attached to the operation arm 112. A transmission mechanism (not shown) constituted by a plurality of spur gears is provided in the transmission case 111, and an electric motor (not shown) is provided in the base 110, and the transmission mechanism is provided by the electric motor. Accordingly, the operation arm 112 is driven to swing around the horizontal axis P4.

As shown in FIGS. 14 and 15, the operator wraps the leg belt 113 around the thigh and attaches the leg belt 113 to the thigh with a hook-and-loop fastener (not shown) (magic tape (registered trademark)). . In a state where the operator wears the assist device, the right waist assisting portion 103 (transmission case 111) is positioned on the right side of the operator's waist, and the left waist assisting portion 103 (transmission case 111) is located on the left side of the operator's waist. ) Is located.

(Right and left arm, wire)
As shown in FIGS. 14, 15, and 16, the upper portions of the right and left vertical frames 106 extend obliquely upward and extend obliquely forward beyond the right and left shoulders of the operator, The left arm portion 102 is formed. Right and left support members 116 are attached to the upper end of the arm portion 102, and right and left pulleys (not shown) are rotatably supported by the support member 116.

An elevating device 117 is attached to the upper part of the rear surface of the support plate 107. From the elevating device 117, the right two wires 118, 119 (corresponding to a cord-like body) and the left two wires 118, 119 ( (Corresponding to a cord-like body) is extended.

The outer support part 115 is connected to the upper part of the support plate 107, and the support member 116 is provided with an outer support part 116a. The ends of the outer wires 118, 119 are connected to the outer support portion 15 and the outer support portion 116a of the support member 116, and the inner portions 118a, 119a of the wires 118, 119 are connected to the lifting device 117. .

The inner wires 118 and 119 of the right two wires 118 and 119 are hung on the pulley of the right support member 116 and extended downward. The attachment portion 121 is connected to the extending ends of the inner wires 118 and 119 of the right two wires 118 and 119, and the right hand portion 120 is connected to the attachment portion 121.

The inner wires 118a and 119a of the two left wires 118 and 119 are hung on the pulley of the left support member 116 and extended downward. The attachment portion 121 is connected to the extending ends of the inner wires 118 and 119a of the two left wires 118 and 119, and the left hand portion 120 is connected to the attachment portion 121.

(lift device)
As shown in FIGS. 14 and 15, the lifting device 117 is connected to the support plate 107. A vertically extending transmission case 125 that houses a transmission mechanism (not shown), a support case 126 that is laterally coupled to the top of the transmission case 125, an electric motor 127 that is laterally coupled to the bottom of the transmission case 125, and a support case 126 The lifting device 117 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 118, 119 of the right and left wires 118, 119 b are connected to the outer support portion 115, and the inner wires 118, 119 of the inner wires 118, 119 a are connected to each of the four rotating bodies inside the support case 126. It is connected.

The electric motor 127 is operated by the control device 108. The power of the electric motor 127 is transmitted to the rotating body inside the support case 126 via the transmission mechanism inside the transmission case 125, and the rotating body is rotationally driven to the winding side and the feeding side.

(Hand part)
17 to 19 show the right and left hand portions 120, and the right and left hand portions 120 have the same shape.

The hand part 120 is formed by bending a plate material, and includes a horizontal wall holding part 131 that is vertically oriented and an extending part 132 that is laterally extended from the top of the horizontal wall holding part 131.

Two channel-like brackets 137 are connected to the opposite end of the lateral wall holding part 131 in the extension part 132, and the brackets are in a state in which the two round bar- like shaft members 138a, 138b are aligned in the vertical direction. 137 is attached sideways.

In the right hand portion 120, the one bracket 137 and the upper shaft member 138a are the first right support portion 139a, and the one bracket 137 and the lower shaft member 138b are the right connection portion 140. The other bracket 137 and the lower shaft member 138b are the second right support part 139b. In the left hand portion 120, the one bracket 137 and the upper shaft member 138a are the first left support portion 141a, and the one bracket 137 and the lower shaft member 138b are the left connection portion 142. The other bracket 137 and the lower shaft member 138b are the second left support portion 141b.

An anti-slip material 143 is attached to the surface of the lateral wall holding portion 131 that faces the lateral wall portion B1 of the luggage B. The anti-slip material 143 is formed in a thin sheet shape using an adsorbent and sticky gel material or rubber material. The anti-slip material 143 is bonded to a flat substrate 144 and held at the end of the substrate 144. A hand 144a is provided.

Lateral guide rails 145 are attached to the upper and lower portions of the horizontal wall holding portion 131.
By holding the handle 144 a of the substrate 144 and inserting the substrate 144 between the guide rails 145, the anti-slip material 143 and the substrate 144 are attached to the horizontal wall holding portion 131.
When the anti-slip material 143 is replaced, the board 144 is pulled out from between the guide rails 145 while holding the handle 144 a of the board 144, and another anti-slip material 143 and the board 144 are inserted between the guide rails 145. What is necessary is just to attach to the horizontal wall holding | maintenance part 131.

(Movable body)
The movable body 155 is formed by bending a plate material, and is disposed on the outer surface side of the hand portion 120 along the horizontal wall holding portion 131 and the extension portion 132 of the hand portion 120. A lower handle portion (corresponding to a first handle portion) 156 is connected laterally to a lower portion of the movable body 155 along the horizontal wall holding portion 131, and an upper surface portion and a horizontal portion of the lower handle portion 156 are connected. A surface fastener 157 (magic tape (registered trademark)) is attached to the surface portion.

In addition, the end of the portion of the movable body 155 along the extending portion 132 is pivotally supported by a movable body attaching portion 132a formed in front of and behind the two brackets 137 on the upper surface portion of the extending portion 132. The movable body 155 is swingable around the lateral axis P of the movable body mounting portion 132a. Further, a winding spring 158 is provided in front of the bracket 137 to elastically bias the movable body 155 in a direction in which the lower handle portion 156 approaches the lateral wall holding portion 131. Further, a cutout portion 155a is formed in a portion of the movable body 155 along the extending portion 132 so that the two brackets 137 and the movable body 155 do not interfere with each other.

(Connection between the hand part and the mounting part, and the approach operation part)
The approach operation unit 129 generates an operation force that causes the left and right hand units 120 to approach each other in a state where the left and right hand units 120 are set in the luggage B.
As shown in FIG. 17, a narrow belt 128 (corresponding to a cord-like body) made of synthetic fiber is connected to an attachment portion 122 formed of a metal plate material.

A right mounting portion 122 and a belt 128 are prepared, and a left mounting portion 122 and a belt 128 are prepared. The right attachment portion 122 is attachable to and detachable from the right attachment portion 121, and the left attachment portion 122 is attachable to and detachable from the left attachment portion 121.

The right belt 128 is passed through the first right support part 139a of the right hand part 120, is changed in the left-right direction, is extended laterally, and is passed through the second left support part 141b of the left hand part 120. Further, the lateral direction is changed and the lateral direction is extended, and the extended end of the right belt 128 is connected to the right connection part 140 of the right hand part 120. In the first right support portion 139a and the second left support portion 141b, the right belt 128 is movable (slidable) in the longitudinal direction of the belt 128 with respect to the left and right hand portions 120.

The left belt 128 is passed through the first left support portion 141a of the left hand portion 120, is changed in the left-right direction and extended sideways, and is passed through the second right support portion 139b of the right hand portion 120. The left belt 128 is extended to the left connecting portion 142 of the left hand portion 120. The extending end of the left belt 128 is connected to the left connecting portion 142 of the left hand portion 120. In the first left support portion 141a and the second right support portion 139b, the left belt 128 is movable (slidable) in the longitudinal direction of the belt 128 with respect to the left and right hand portions 120.

As described above, the approach operation portion 129 includes the first and second right support portions 139a and 139b, the first and second left support portions 141a and 141b, the right connection portion 140 and the left connection portion 142, and the belt 128. The extension end of the right belt 128 is connected to the right connection portion 140 of the right hand portion 120 via the first right support portion 139a and the second left support portion 141b, and the extension end of the left belt 128 is extended. Is connected to the left connection part 142 of the left hand part 120 via the first left support part 141a and the second right support part 139b.

Since the attachment portion 122 can be attached to and detached from the attachment portion 121, when another hand portion 120 having a different structure and function from the hand portion 120 shown in FIGS. It is possible to remove from the attachment part 121 and attach another hand part 120 directly to the attachment part 121.

(Configuration related to ascent and descent switch for raising and lowering the hand part)
As shown in FIGS. 17 and 20, a right cover portion 146 is provided, and a lifting operation switch 123 is provided on the right cover portion 146. A right cover portion 146 and a left cover portion 146 having a symmetrical shape are provided, and a lower operation switch 124 is provided on the left cover portion 146.

The cover part 146 includes an outer part 147 integrally formed of a synthetic resin and a metal inner part 148, and the inner part 148 is connected to the inner surface of the outer part 147 by screws.
The inner portion 148 is formed by bending a metal plate material. The inner portion 148 is formed by bending a lateral side portion 149 arranged in the vertical direction, an upper portion 150 extending laterally from the upper portion of the lateral side portion 149, and an extension of the upper portion 150. A lateral side portion 151 extending upward from the protruding end portion is provided.

A rising operation switch 123 is attached to the outer portion 147 of the right cover portion 146, and a lowering operation switch 124 is attached to the outer portion 147 of the left cover portion 146.
As shown in FIGS. 14, 15, and 16, the right and left harnesses 114 connected to the control device 108 are inside the right and left arm portions 102, and pass through the inside of the arm portion 102 to reach the arm portion. The upper end of 102 is extended. From the opening at the upper end of the arm portion 102, the harness 114 is extended and extended downward, the right harness 114 is connected to the raising operation switch 123, and the left harness 114 is connected to the lowering operation switch 124. ing.

In the inner part 148, a hook-and-loop fastener 152 (magic tape (registered trademark)) is attached to the surface of the lateral side part 149 on the upper side part 150 side. A hook-and-loop fastener 152 (magic tape (registered trademark)) is attached to the lower surface of the upper portion 150.

(Attaching and removing the cover from the hand)
As shown in FIGS. 17 and 18, the surface fastener 152 of the cover portion 146 is brought into contact with and connected to the surface fastener 157 of the lower handle portion 156 of the movable body 155, so that the cover portion 146 is held under the movable body 155. It can be attached to the hand portion 156, and the raising operation switch 123 (the lowering operation switch 124) is attached to the hand portion 120 via the cover portion 146.

Since the connection range of the hook-and-loop fasteners 152 and 157 is relatively wide, the attachment position of the cover portion 146 on the lower handle 156 of the movable body 155 can be arbitrarily changed within the connection range of the hook-and-loop fasteners 152 and 157. it can.

By releasing the surface fastener 152 of the cover part 146 from the surface fastener 157 of the lower handle part 156 of the movable body 155, the cover part 146 is removed from the hand part 120, and the ascending operation switch 123 (the descending operation switch 124) is It is removed from the hand unit 120.

When various hand portions 120 are attached to the attachment portion 121 (when they are replaced), the surface fastener 152 of the cover portion 146 is connected to the surface fastener (not shown) of the replaced hand portion 120, whereby the cover portion 146 (the raising operation switch 123 and the lowering operation switch 124) can be shared by various hand units 120.

(Elevator operation by operating the ascent and descent switches)
As shown in FIGS. 14 and 15, when the raising operation switch 123 is pushed, the rotating body is driven to rotate to the winding side by the electric motor 127 in the lifting device 117, and the inners 118 a and 119 a of the wires 118 and 119 are rotated. The hand unit 120 is raised by being wound around the body.

When the lowering operation switch 124 is pressed, the electric motor 127 rotates the rotating body to the feeding side, the inner portions 118a and 119a of the wires 118 and 119 are drawn out from the rotating body, and the hand unit 120 is lowered.

When the push operation of the ascending operation switch 123 and the descending operation switch 124 is stopped, the electric motor 127 is stopped.
The electric motor 127 is provided with an electromagnetic brake (not shown). The electromagnetic brake is automatically released when the electric motor 127 is operated, and the electromagnetic brake is automatically braked when the electric motor 127 is stopped and de-energized. It becomes a state.

(Luggage holding operation by hand part)
As shown in FIG. 20, a cubic load B such as a cardboard box is assumed.
As shown in FIG. 14 and FIG. 15, when the operator wearing the assisting device puts out the right hand and the left hand and has the lower handle portion 156 of the movable body 155, the horizontal wall holding portion 131 of the hand portion 120 is moved. The extension part 132 of the hand part 120 is in the state of being directed in the left-right direction.

It is assumed that the luggage B is placed on the floor with respect to the worker wearing the assist device.
As shown in FIG. 20, in the right hand portion 120, the operator places the lateral wall holding portion 131 (slip prevention material 143) on the right side of the load B while applying the extension portion 132 to the upper surface portion B <b> 2 of the load B. Apply to the side wall B1. In the left hand part 120, the lateral wall holding part 131 (slip prevention material 143) is applied to the left lateral wall part B1 of the luggage B while the extension part 132 is applied to the upper surface part B2 of the luggage B. As a result, the anti-slip material 143 of the hand unit 120 is attracted to the lateral wall B1 of the luggage B.

For example, if the operator performs the above-described operation while holding the lower handle portion 156 of the movable body 155, the movable body is applied by the force applied by the operator having the lower handle portion 156 and the urging force of the winding spring 158. 155 can be pressed against the horizontal wall holding portion 131 (antislip material 143) of the hand portion 120, and the horizontal wall holding portion 131 can be applied to the horizontal wall portion B1 of the load B.

In this way, when the hand part 120 is raised in a state where the horizontal wall holding part 131 is abutted against the horizontal wall part B1 of the load B, the load is brought together with the hand part 120 by the adsorption action of the anti-slip material 143 of the hand part 120. B is lifted.
Depending on the weight of the load B, the horizontal wall B1 of the load B may move downward (or fall) along the horizontal wall holding portion 131 (antislip material 143) of the hand 120, or the hand 120 may slip. Due to the adsorption action of the stopper 143, 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 120.

When the load B is lifted by the hand unit 120, the weight of the load B is applied to the hand unit 120, and tension is generated in the belt 128. The right belt 128 generates an operating force FL2 that causes the left hand portion 120 to approach the right hand portion 120, and the left belt 128 causes the right hand portion 120 to approach the left hand portion 120. An operating force FR2 to be generated is generated.

In the present embodiment, the right belt 128 is passed through the first right support portion 139a, and further passed through the second left support portion 141b to connect the extension end to the right connection portion 140, and the left belt 128 Is passed through the first left support part 141a and further extended through the second right support part 139b to connect the extended end to the left connection part 142. That is, the left and right belts 128 are connected to the left and right hand parts 120. In between, each is doubled. Therefore, for example, between the left and right hand portions 120, the operation forces FR2 and FL2 are generated approximately twice as compared with the case where the left and right belts 128 are single.

As described above, in the approaching operation unit 129, the operating forces FR2 and FL2 causing the right and left hand units 120 to approach each other are generated, and the lateral wall holding unit 131 (slip prevention material 143) of the right hand unit 120 is loaded. B is pressed by the right lateral wall B1 of B, and the lateral wall holding part 131 (antislip material 143) of the left hand unit 120 is pressed by the left lateral wall B1 of the load B. Thereby, the certainty of holding | maintenance of the load B by the hand part 120 is improved.

(Auxiliary operation of the worker when holding the luggage with the hand)
As shown in FIG. 20, when the operator holds the load B with the hand unit 120, the operator can use the lower part of the movable body 155 to assist in lifting the load B or correct the posture of the load B. In order to perform operations such as pulling up the hand portion 120 with the handle portion 156 or placing the lifted luggage B at a predetermined position, the hand is held with the lower handle portion 156 of the movable body 155. An operation for lowering the unit 120 downward may be performed.

In this case, for example, when performing an operation for lifting the hand unit 120, if the operator performs an operation for lifting the hand unit 120 at a timing earlier than the timing when the lifting device 117 raises the hand unit 120. In some cases, excessive force is generated in the direction of pulling the lower handle portion 156 upward. Further, when the operation of lowering the hand unit 120 is performed, if the speed at which the hand unit 120 is lowered by the lifting device 117 is faster than the operator thinks, the lower handle unit 156 is moved upward as described above. Excessive force may be generated in the direction of pulling up. In this case, when the lower handle portion is directly attached to the horizontal wall holding portion 131, the lower handle portion moves upward with respect to the luggage B while the horizontal wall holding portion 131 moves away from the horizontal wall portion B1 of the luggage B. There is a possibility that the state where the luggage B is held by the hand unit 120 is released at an unexpected timing.

However, as described above, the lower handle portion 156 is attached to the movable body 155 and can swing around the lateral axis P of the movable body attachment portion 132a. The movable body 155 is elastically urged in a direction in which the movable body 155 approaches the holding portion 131. Therefore, even if an excessive force is generated in the direction of pulling up the lower handle 156 upward, as shown in FIG. 21, the movable body 155 moves away from the lateral wall holding portion 131 against the urging force so as to follow this force. Since the position of the lower handle part 156 relative to the hand part 120 is displaced upward, the horizontal wall holding part 131 is separated from the horizontal wall part B1 of the luggage B and holds the luggage B by the hand part 120. Occurrence of a situation where the state is released is suppressed, and the certainty of holding the luggage B by the hand unit 120 is increased.

In addition, even after the load B is lifted from the floor, if it seems that the anti-slip material 143 of the hand part 120 is not sufficiently adsorbed, the operator holds the lower handle part 156 of the movable body 155 and moves the movable body. By pressing the lateral wall holding part 131 (slip prevention material 143) of the hand part 120 against the lateral wall part B1 of the luggage B through 155, the certainty of holding the luggage B by the hand part 120 can be 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 108 activates the waist assisting portion 103 and the lifting device 117 based on the pressing operation of the lifting operation switch 123 and the lowering operation switch 124. Will be described.

As shown in FIGS. 14 and 15, when the operator wears the assist device and the operator does not press both the ascending operation switch 123 and the descending operation switch 124, the electric motor 127 of the elevating device 117 is used. Is stopped, and the electric motor of the waist assisting portion 103 is in a stopped state (free rotation state).

When the worker walks, or when the worker bends the waist down or bends the knee and drops the waist, the operation arm 112 swings to follow the operator's thigh. The operation of the worker is not hindered.

When the operator bends the waist down (bends the knee and drops the waist) and holds the pallet or the load B on the floor, when the operator pushes down the lowering operation switch 124, the lifting / lowering device 117 has the electric motor 127. Operates to the feeding side, the inner portions 118a and 119a of the wires 118 and 119 are fed out, and the hand portion 120 is lowered.

When the push operation of the lowering operation switch 124 is stopped, the electric motor 127 is stopped and the hand unit 120 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 120 is held by the unit 120.

As described in (Elevating device) in the previous section, the electric motor 127 is provided with an electromagnetic brake (not shown), and the electromagnetic brake automatically enters a braking state when the electric motor 127 is stopped or not energized. .
In a state where the electric motor 127 is stopped, the inner portions 118a and 119a of the wires 118 and 119 are not drawn out from the elevating device 117, and even if the weight of the load B is applied to the hand portion 120 as will be described later, It will not descend.

The worker lifts the load B by extending the waist (with standing up) while holding the load B by the hand unit 120. When the operator pushes the ascent operation switch 123, the operation arm 112 is driven downward in the lower back assisting portion 103, and the operator's thigh is operated downward, so that the lower back extends (rises up). ) Is assisted.

After the operator has stood up while pressing the ascending operation switch 123, when the hip assisting part 103 detects that the operation arm 112 has reached a position that is substantially directly downward, the operator has stood up (rises up) ) Is determined, and the electric motor of the lower back assistance unit 103 is in a stopped state (free rotation state).

Next, in the lifting / lowering device 117, the electric motor 127 operates on the winding side, the inner portions 118a and 119a of the wires 118 and 119 are wound, and the hand portion 120 is raised. When the hand unit 120 rises to a desired position, the push operation of the raising operation switch 123 is stopped, whereby the electric motor 127 is stopped and the hand unit 120 is stopped.

The worker walks to a high shelf on which the luggage B should be placed or a truck bed. When the worker arrives at a high shelf, a truck bed, etc., and the operator pushes down the lowering operation switch 124, the electric motor 127 is actuated to the feeding side in the elevating device 117, and the inner 118a, 119a is extended and the hand part 120 descends.

The worker places the luggage B on a high shelf or a truck bed, and removes the hand unit 120 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 Invention in Second Embodiment)
The approach operation unit 129 may be configured as described below.
As shown in FIG. 22, in the right and left hand parts 120, one channel-like bracket 137 is connected to the end of the extension part 132 on the opposite side of the horizontal wall holding part 131. Three shaft members 138a, 138b, and 138c are attached to the bracket 137 in a lateral direction in a state where they are aligned in the vertical direction.

In the bracket 137, the middle shaft member 138a is disposed farther from the lateral wall holding portion 131 than the upper shaft member 138b and the lower shaft member 138c. In the right hand portion 120, the bracket 137 and the middle shaft member 138a are the first right support portion 139a, the bracket 137 and the upper shaft member 138b are the second right support portion 139b, the bracket 137 and the lower side The shaft member 138 c is the right connection portion 140. In the left hand portion 120, the bracket 137 and the middle shaft member 138a are the first left support portion 141a, the bracket 137 and the lower shaft member 138c are the second left support portion 141b, and the bracket 137. The upper shaft member 138 b is the left connecting portion 142.

The right belt 128 is passed through the first right support part 139a of the right hand part 120, is changed in the left-right direction, is extended laterally, and is passed through the second left support part 141b of the left hand part 120. Further, the direction is changed in the left-right direction and extended in the horizontal direction, and the extension end of the right belt 128 is connected to the right connection part 140 of the right hand part 120. In the first right support portion 139a and the second left support portion 141b, the right belt 128 is movable (slidable) in the longitudinal direction of the belt 128 with respect to the left and right hand portions 120.

The left belt 128 is passed through the first left support portion 141a of the left hand portion 120, is changed in the left-right direction and extended sideways, and is passed through the second right support portion 139b of the right hand portion 120. The left belt 128 is extended to the left connecting portion 142 of the left hand portion 120. The extending end of the left belt 128 is connected to the left connecting portion 142 of the left hand portion 120. In the first left support portion 141a and the second right support portion 139b, the left belt 128 is movable (slidable) in the longitudinal direction of the belt 128 with respect to the left and right hand portions 120.

By attaching the right and left belts 128 as described above, the left belt 128 is doubled on the upper side and the right belt 128 is doubled on the lower side in the bracket 137 between the right and left hand portions 120. The right and left belts 128 are arranged vertically so as to overlap each other in plan view.

If the left and right belts 128 are attached so as to be overlapped in a plan view in a state where each belt 128 is doubled up and down, the attachment manner is particularly limited. It is not something.

(Second embodiment of the invention in the second embodiment)
The approaching operation unit 129 is not limited to the one shown in FIGS. 17 to 22 as long as it generates an operating force that causes the left and right hand units 120 to approach each other in the state where the left and right hand units 120 are set in the load B. I can't. For example, the left and right belts 128 may be single between the left and right hand portions 120, respectively.
Further, in the assist device, in the approach operation portion, 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, The right support part so that the left and right cable-like bodies (belts) are at least double between the right support part and the left support part and are movable in the longitudinal direction of the cord-like body And the left and right cords are connected to the right or left hand, respectively, or the right cord and the left cord are extended to the left. The extended end of the body may be connected.
That is, the left and right belts 128 are not limited to be attached so as to be double between the left and right hand portions 120, but may be attached so as to be triple or more.

(Third Another Embodiment of Invention in Second Embodiment)
The movable body 155 can swing around the horizontal axis P of the movable body mounting portion 132a. However, the movable body 155 has the lower handle portion 156 positioned at least vertically with respect to the left and right hand portions 120. Anything that can be displaced is acceptable.

For example, a plate-like movable body 155 that can slide up and down is provided on the horizontal wall holding portion 131, and a lower handle portion may be attached to the movable body 155. In this case, even if an excessive force is generated in the direction of pulling up the lower handle portion 156 as described above, the movable body 155 to which the lower handle portion 156 is attached so as to follow this force is independently provided. Since it is displaced in the vertical direction, the occurrence of a situation in which the state of holding the load B by the hand unit 120 is released is suppressed.

(Fourth embodiment of the invention in the second embodiment)
Further, as shown in FIG. 23, the left and right hand portions 120 may have an upper handle portion 160 (corresponding to a second handle portion) connected upward to the upper surface portion of the extension portion 132.

In this case, for example, the upper handle portion 160 connected to the right hand portion 120 is located closer to the lateral wall holding portion 131 than the bracket 137 in the left-right direction on the upper surface portion of the extension portion 132 (on the right outer side). On the other hand, the upper handle portion 160 connected to the left hand portion 120 is closer to the lateral wall holding portion 131 than the bracket 137 in the left-right direction on the upper surface portion of the extension portion 132 ( (Left outside position) When the upper handle portion 160 is connected, the size of the cutout portion 155a of the movable body 155 is appropriately changed in order to prevent the swinging movable body 155 from interfering with the upper handle portion 160. By doing so, the movable body 155 can swing without interfering with the upper handle 160 as shown in FIG.

Then, the cover portion 146 can be attached to the upper handle portion 160 by appropriately providing a hook and loop fastener on the upper handle portion 160 and applying the hook and loop fastener 152 of the cover portion 146 to the surface fastener.

As described above, when the upper handle portion 160 is provided, the operator does not bend the waist portion so large that the side wall holding portion 131 (slip prevention material 143) of the hand portion 120 is attached to the side wall portion B1 of the luggage B. Can be applied.

Further, when the operator holds the upper handle portion 160 and operates the upper side with the horizontal wall holding portion 131 of the hand portion 120 applied to the horizontal wall portion B1 of the load B, A moment for pressing the lateral wall holding part 131 of the hand part 120 against the lateral wall part B1 of the load B is generated around the vicinity of the connection part with the extending part 132.

As a result, in addition to the function of the approach operation unit 129 that generates an operation force that causes the right and left hand units 120 to approach each other, the hand is moved by the moment that the operator operates the upper handle unit 160 upward. The lateral wall holding portion 131 (antislip material 143) of the portion 120 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 120 is enhanced.

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.

[First Embodiment]
DESCRIPTION OF SYMBOLS 1 Main body part 2 Arm part 18, 19 Wire (cord-like body)
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 Anti-slip material B Luggage B1 Side wall part of luggage B2 Upper surface part of luggage FR1, FL1 Operating force

[Second Embodiment]
101 main body 102 arm 118, 119 wire (cord)
120 Hand part 128 Belt (cord)
129 Approaching operation part 131 Horizontal wall holding part 132 Extension part 132a Movable body attachment part (attachment part)
155 Movable body 156 Lower handle (first handle)
160 Upper handle (second handle)
B Luggage B1 Side wall of luggage B2 Upper surface of luggage FR2, FL2 Operating force

Claims (8)

1. 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.
2. 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.
3. 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.
4. The assist device according to any one of claims 1 to 3, wherein the lateral wall holding portion is provided with an anti-slip material having adsorptivity.
5. 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;
   A first handle portion that can be gripped by an operator is provided, and a movable body attached to each of the left and right hand portions is provided.
   An assist device in which the movable body is movable so that the position of the first handle portion is displaced at least in the vertical direction with respect to the left and right hand portions.
6. The movable body is pivotally supported by a mounting portion provided in the left and right hand portions,
   The assist device according to claim 5, wherein the movable body swings about the attachment portion so that the first handle portion approaches and separates from the lateral wall holding portion.
7. The assist device according to claim 6, wherein the movable body is biased so as to approach the side wall holding portion.
8. The assist device according to any one of claims 5 to 7, wherein the extension portion is provided with a second handle portion that can be gripped by an operator.
   

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