WO2019026496A1 - Hand element for holding baggage, and assistance apparatus - Google Patents

Abstract

A hand element for holding baggage comprises side elements 21 that press into side walls of baggage B. An adhesive non-slip material 29 is provided on the side elements 21 so as to contact the side walls of the baggage B.

Description

Hand portion for luggage holding and assist device

The present invention is used as an assist device to be attached to a worker, a winch supported to a ceiling of a building, etc. by being connected to a suspension mechanism and suspended, and a hand for holding a load The invention relates to a hand element or a hand device.
In addition, the present invention relates to an assist apparatus which is worn and used by a worker and which assists the worker's work.

[Background Art 1]
As an assist instrument worn and used by a worker, there is one disclosed in Patent Document 1. In Patent Document 1, the arm portion is extended to the front side from the main body portion attached to the worker, and the hand portion for holding luggage is a wire (corresponding to a suspension mechanism) extended to the lower side from the arm portion. It is connected.

In Patent Document 1, a lifting and lowering device for winding and unwinding a wire is provided in the main body, and a manual operation unit for operating the lifting and lowering device on the winding side and the unwinding side is provided in the hand.
The operator holds the load by the hand while holding the hand by the hand, and the hand can be raised and lowered by operating the manual operation unit with the hand holding the hand.

[Background Art 2]
As an assist instrument as described above, there is one as disclosed in Patent Document 2.
In patent document 2, the main-body part attached to a worker's back part and the right and left arm parts extended from the main-body part to the front side are provided. A lifting device is provided in the main body, and right and left wires are extended from the lifting device. A wire extends along the arm, is wound around a rotating body at the top of the arm and extends downward, and the right and left hand portions are connected to the extending end of the wire.

The right hand holds the right side of the load, and the left hand holds the left side of the load to hold the load. With the load held in the hand portion, the hand portion (load) is raised by winding the wire by the lifting device, and the hand portion (load) is lowered by pulling out the wire by the lifting device.

Japanese Patent Laid-Open Publication No. 2015-182832 (JP2015-182832A) Japanese Patent Application Laid-Open No. 2016-129916 (JP2016-129916A)

[Problem 1]
The problems corresponding to [Background Art 1] are as follows.
In Patent Document 1, a load such as a beer case provided with an opening on the side wall of the load is assumed, and the lower side of the hand is inserted into the opening on the side wall of the load to make the hand Hold the package.

In the luggage, not only the luggage provided with the opening in the lateral wall as described above, but also nothing is provided on the lateral wall of the luggage such as a cardboard box, and the like, and the flush lateral wall is provided. There are also luggage.

An object of the present invention is to provide a hand portion capable of appropriately holding a load even if the load holding hand portion is provided with a flush side wall portion without an opening and the like. It is.

[Problem 2]
The problems corresponding to [Background Art 2] are as follows.
In the assist device as in Patent Document 2, there is room for improvement in terms of enhancing the certainty of holding of the load by the right and left hand portions.
An object of the present invention is to increase the certainty of holding of a load by the right and left hand parts in an assist device provided with the right and left hand parts.

[1] The solution means corresponding to [Problem 1] is as follows.
A load holding hand unit connected to and suspended by the suspension mechanism,
A lateral side pressed against the lateral wall of the load,
A luggage holding hand portion provided on the lateral side so as to be in contact with the lateral wall of the luggage, and provided with an adhesive non-slip member.

For example, in a package having nothing but a flush side wall such as a cardboard box, according to this configuration, the side portion (anti-slip material) of the hand portion When pressed against the side wall of the load, the anti-slip material adheres to the side wall of the load.

If the load lifts the load by the hand in this state, the weight of the load may cause the side wall of the load to move downward along the side of the hand (anti-slip material) (even if it is to fall). Since the non-slip material adheres to the lateral wall of the load, the lateral wall of the load along the non-slip material is prevented from sliding (moving), and the hand portion holds the load.
As described above, according to the present configuration, it is possible to obtain a hand portion capable of appropriately holding a load even if the load is not provided with the opening and the like and is provided with the flush side wall portion. .

In one preferred embodiment,
An upper portion extending laterally from an upper portion of the lateral side;
The luggage is held with the lateral side pressed against the lateral wall of the luggage and the upper side in contact with the ceiling of the luggage.

According to this configuration, when holding the load by the hand, by bringing the upper side of the hand into contact with the ceiling of the load, the lateral side (non-slip material) of the hand can be easily removed from the side wall of the load The load can be properly held by the hand portion because it can be pressed against the lateral wall of the load.

In one preferred embodiment,
A first holding arm and a second holding arm pivotally supported are provided, and the first holding arm and the second holding arm are provided with the lateral side,
The load with the lateral side of the first holding arm pressed against one lateral wall of the load and the lateral side of the second holding arm pressed against the other lateral wall of the load Is held.

According to this configuration, the load is held by the first holding arm and the second holding arm of the hand portion in a sandwiching manner.
In this case, the first holding arm and the second holding arm of the hand portion are provided with the side portions (non-slip members), and the side portions (the non-slip members) of the hand portion sandwich the load. The load can be properly held by the hand portion because it is pressed against the one side wall and the other side wall.

In one preferred embodiment,
The lateral side is formed in an arc shape projecting to the lateral wall side of the luggage in a side view.

According to this configuration, even if the lateral wall portion of the load is not flush, the lateral side (anti-slip material) of the hand portion can contact the lateral wall portion of the load without difficulty. You can hold the luggage properly.

In one preferred embodiment,
The lateral side is pivotally supported about a lateral axis along the lateral wall of the load;
The length from the axial center to the upper end in the lateral side is set to be longer than the length from the axial center to the lower end in the lateral side.

When the lateral wall of the load tries to move downward along the lateral side (anti-slip material) of the hand with the lateral side (anti-slip material) of the hand pressed against the lateral wall of the load, The side of the side of the unit will swing downward with the load.
As a result, the long part on the upper side from the axial center in the lateral side of the hand portion is strongly pressed against the lateral wall portion of the load, and the load can be properly held by the hand portion.

In one preferred embodiment,
Irregularities are formed on the contact surface of the non-slip member.

According to this configuration, with the lateral side (anti-slip material) of the hand portion pressed against the lateral wall of the load, the lateral wall of the load is directed downward along the lateral side (anti-slip material) of the hand portion If it is going to move, the unevenness of the non-slip member is deformed and bites into the lateral wall of the load, and the hand can properly hold the load.

In one preferred embodiment,
A substrate to which the anti-slip material is adhered, and a mounting member for attaching and detaching the substrate to the lateral side are provided.

If long-term use of the hand portion reduces the non-slip function of the non-slip member, it is necessary to replace the non-slip member.
According to this configuration, the non-slip member is not directly bonded to the side portion of the hand portion, but the non-slip member is bonded to the substrate, and the substrate is attached to and detached from the side portion of the hand portion by the mounting member. It is like that. As a result, the antislip member and the substrate can be attached and removed as one part to the lateral side of the hand portion, and the antislip member can be easily replaced.

In one preferred embodiment,
The anti-slip material is a gel material or rubber material having adsorptivity.

According to this configuration, since the anti-slip material is a general gel material or rubber material, it is advantageous in cost reduction of the hand portion.

In addition, an assist device having the configuration of any one of the above-described hand portions is also an object of the present invention. Such assist devices are
A body attached to the back of the worker;
An arm portion extending forward from the main body portion;
The suspension mechanism includes right and left wires extending downward from the upper portion of the arm portion;
A load holding hand portion is connected to each of the right end of the wire and the left end of the wire.

[2] The solution means corresponding to [Problem 2] is as follows.
A body attached to the back of the worker;
An arm portion extended to the front side from the main body portion;
Right and left wires extending downward from the top of the arm portion;
Right and left hand portions connected to the extended ends of the right and left wires;
When the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, an operating force that causes the right and left hand portions to approach each other by the weight of the load. And an approach operation unit that generates an assist device.

According to this configuration, when the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, the approach operation portion causes the right and left hand portions to approach each other. As a force is generated, the right hand portion is pressed against the right side of the load, and the left hand portion is pressed against the left side of the load, thereby maintaining the load by the right and left hand portions. Certainty is enhanced.

According to this configuration, the operating force for causing the right and left hand parts to approach each other generates the weight of the load as a power source, and it is necessary to separately provide a power source such as an electric motor for generating the above-described operating force. Because it is not, it is advantageous in terms of simplification of the structure.

In one preferred embodiment,
The approaching operation unit is
A right support portion provided in the right hand portion, the right wire being supported movably in the longitudinal direction of the wire with respect to the right hand portion;
A left support portion provided on the left hand portion, the left wire being movably supported in the longitudinal direction of the wire with respect to the left hand portion;
The extending end of the right wire is connected to the left hand, and the extending end of the left wire is connected to the right hand.

According to this configuration, when the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, tension is generated on the right and left wires. The tension of the left wire is the operating force that causes the right and left hand parts to approach each other.
Thus, by devising the arrangement of the right and left wires, an approach operation unit can be obtained, which is advantageous in terms of simplification of the structure.

In one preferred embodiment,
The approaching operation unit is
A right support portion provided in the right hand portion, the right wire being supported movably in the longitudinal direction of the wire with respect to the right hand portion;
A left support portion provided on the left hand portion, the left wire being movably supported in the longitudinal direction of the wire with respect to the left hand portion;
The extending end of the right wire is connected to the extending end of the left wire.

According to this configuration, when the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, tension is generated on the right and left wires. The tension of the left wire is the operating force that causes the right and left hand parts to approach each other.
By devising the arrangement of the right and left wires in this manner, the access operation unit can be obtained, and in addition to this, the number of wires extending to the right and left hand units is reduced. It is advantageous in terms of simplification of the structure.

In one preferred embodiment,
The right wire and the left wire are continuous wires.

According to this configuration, the right and left wires can be obtained by one wire, which is advantageous in terms of simplification of the structure.

In one preferred embodiment,
Right and left said arm parts are provided;
The right wire is extended downward from the upper part of the right arm, and the right hand is connected to the extending end of the right wire.
The left wire is extended downward from the upper part of the left arm, and the left hand is connected to the extended end of the left wire.
The approaching operation unit is
It is attached over a predetermined portion between the arm portion and the hand portion in the right and left wires, and restricts the state in which the predetermined portions of the right and left wires move outward, The spacing of the predetermined portion of the left wire is maintained at a predetermined spacing narrower than the spacing of the upper portions of the right and left arm portions.

According to this configuration, when the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, tension is generated on the right and left wires. The tension of the left wire is the operating force that causes the right and left hand parts to approach each other.
Thus, by devising the arrangement of the right and left wires, an approach operation unit can be obtained, which is advantageous in terms of simplification of the structure.

[3] Other features and advantages to be achieved will be apparent from the following description.

Right side view with the operator wearing the assist equipment (an assistance apparatus) Rear view with the operator wearing the assist tool Perspective view of the assist device A perspective view showing the right and left hand elements or hand devices holding a load An exploded perspective view of the right hand part Side view of the right hand part Rear view of the right hand part The perspective view which shows the state which hold | maintained the luggage | load by the right and left hand part by 1st other embodiment. The perspective view which shows the state which hold | maintained the luggage | load by the right and left hand part by 2nd another embodiment. The rear view which shows the state which hold | maintained the luggage | load by the right and left hand part by 3rd another embodiment The perspective view which shows the state which hold | maintained the luggage | load by the right and left hand part by 4th another embodiment. The perspective view which shows the state which hold | maintained the luggage | load by the right and left hand part by 4th another embodiment. Side view of the hand portion according to the fifth alternative embodiment An exploded perspective view of the lateral side and the non-slip member (substrate) according to the fifth alternative embodiment Longitudinal side view of base of hand according to fifth alternative embodiment Transverse top view of the base of the hand portion according to the fifth alternative embodiment Side view of the hand according to a sixth alternative embodiment The perspective view of a non-slip member according to a seventh alternative embodiment Side view of anti-slip material according to the seventh alternative embodiment Side view of anti-slip material according to the seventh alternative embodiment Side view of anti-slip material according to the seventh alternative embodiment

FIGS. 1 to 10 show an assist apparatus which the operator wears and uses.
The front-rear direction and the left-right direction in the embodiments of the present invention are described as follows unless otherwise specified. When the worker wears the assist tool, the front side is "front", the rear side is "rear", the right side is "right", and the left side is "left" as viewed from the worker.

(Whole structure and main body of assist device)
As shown in FIGS. 1, 2 and 3, the assist device includes a main body 1 attached to the back of the worker, and right and left arms extending upward from the upper portion of the main body 1 and extending forward. Part 2 and right and left leg acting parts 3 provided at the lower part of the main body part 1 are provided, and a mounting belt 4 for attachment to a worker and right and left shoulder belts 5 are provided.

The main body portion 1 has a frame shape including a right and left vertical frame 6 and a support plate 7 connected to the right and left vertical frames 6 and the like. A mounting belt 4 is attached to the leg acting portion 3, and a shoulder belt 5 is attached to an upper portion of the front surface of the support plate 7. The control device 8 is attached to the upper and lower middle portion of the rear surface of the support plate 7, and the battery 9 is attached to the lower portion of the rear surface of the support plate 7.

As shown in FIG. 1 and FIG. 2, the arm portion (shoulder portion) of the worker is put in the shoulder belt 5 and the attachment belt 4 is wound around the waist portion of the worker and fixed. 1 is attached.

The weight of the assist tool and the load B (see FIGS. 4, 8, 9, 10) mainly rests on the operator's waist through the attachment belt 4, and the weight of the assist tool and load B is stabilized by the worker's waist Be supported. The right and left shoulder belts 5 mainly exert the function of stopping the state in which the main body 1 tries to move backward from the back of the worker.

(Right and left leg action parts)
As shown in FIGS. 1, 2 and 3, the leg acting portion 3 includes a base 10, a transmission case 11, an operation arm 12, a leg belt 13 and the like. The base 10 is supported by the lower portion of the support plate 7 so as to be slidable in the left-right direction, and the transmission case 11 is forwardly connected to the outer end of the base 10.

The operation arm 12 is swingably supported around the horizontal axis P1 in the left-right direction of the front portion of the transmission case 11, and a wide belt-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 inside transmission case 11, an electric motor (not shown) is provided inside base 10, and the transmission mechanism is formed by the electric motor. The operation arm 12 is driven to swing around the horizontal axis P1 via the same.

When attaching the main body 1 to the back of the worker, when the worker winds and fixes the attachment belt 4 around the waist, the right and left leg acting portions 3 (base 10) are supported together with the attachment belt 4 It is movable in the left-right direction along the plate 7.
The distance between the right and left leg acting parts 3 is determined according to the physical size of the worker depending on the degree of winding of the mounting belt 4 to the waist, and the positions of the right and left leg acting parts 3 are determined by the mounting belt 4 Be

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 by means of a hook and loop fastener (not shown) (magic tape (registered trademark)). . When the worker wears the assist tool, the right leg action part 3 (transmission case 11) is positioned on the right side of the operator's waist, and the left leg action part 3 (transmission case 11) on the left side of the operator ) Is located.

(Right and left arm parts)
As shown in FIGS. 1, 2 and 3, the upper portions of the right and left vertical frames 6 extend obliquely upward beyond the shoulders of the worker's right and left and extend obliquely forward, 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, and from the lifting device 17, the two right wires 18 and 19 (corresponding to the suspension mechanism) and the two left wires 18 and 19 ( Suspension mechanism) is extended.

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

The inners 18a and 19a of the two right wires 18 and 19 are hung on the pulleys of the right support member 16 and extended downward, and the extended end of the inner 19a of the wire 19 is the inner of the wire 18 A connecting member 28 is connected to an intermediate portion of 18 a.

Inners 18a and 19a of the two left wires 18 and 19 are hung on the pulleys of the left support member 16 and extended downward, and the extended end of the inner 19a of the wire 19 is the inner of the wire 18 A connecting member 28 is connected to an intermediate portion of 18 a.
The right and left hand portions 20 are connected to the extension ends of the inner 18 a of the right and left wires 18.

(lift device)
As shown in FIGS. 1 and 2, the lifting device 17 is connected to the support plate 7. An upper downward transmission case 25 which houses a transmission mechanism (not shown), a support case 26 laterally connected to the upper part of the transmission case 25, an electric motor 27 horizontally connected to the lower part of the transmission case 25, a support case 26 The lifting device 17 is provided with four rotating bodies (not shown) rotatably supported around a horizontal axis inside.

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

The controller 8 operates the electric motor 27. The power of the electric motor 27 is transmitted to the rotating body in the support case 26 via the transmission mechanism in the transmission case 25 so that the rotating body is rotationally driven to the take-up side and the delivery side.

(Configuration of hand section)
The entire right and left hand elements or hand devices 20 are shown in FIGS. The right and left hand portions 20 have the same shape, and the positions of the raising operation switch 23 and the lowering operation switch 24 are different.

As shown in FIGS. 4, 5, 6, 7, the hand unit 20 includes a lateral side 21 and an upper side 22. The flat plate material is bent at about 90 degrees to form the side portion 21 disposed in the vertical direction, and the upper side portion 22 extending laterally from the upper portion of the side portion 21.

A thin sheet-like anti-slip member 29 is formed of a gel material or rubber material having adsorptivity and adhesiveness, and the anti-slip member 29 is adhered to a flat substrate 30. Four holes 30 a are opened in the substrate 30, and screw holes 21 a are opened in four places of the lateral side 21.

A countersunk screw 31 (corresponding to a mounting member) is inserted into the hole 30 a of the substrate 30 and attached to the screw hole 21 a of the lateral side 21 so that the substrate 30 is connected to the lateral side 21. In this case, the head of the countersunk screw 31 is flush with the substrate 30.

In the right hand portion 20, a right support portion 33 obtained by bending a round bar into a U-shape is connected to the upper side portion 22. The inner 18a of the right wire 18 is passed through the right support 33 and turned to the left and right to extend sideways, and the extended end of the inner 18a of the right wire 18 is the upper side of the left hand 20 It is connected to the part 22. In the right support portion 33, the inner 18a of the right wire 18 is movable (slidable) in the longitudinal direction of the inner 18a of the wire 18 with respect to the right hand portion 20.

In the left hand portion 20, a left support portion 34 obtained by bending a round bar material into a U-shape is connected to the upper side portion 22. The inner 18a of the left wire 18 is passed through the left support portion 34 to turn in the left-right direction and to extend sideways, and the extended end of the inner 18a of the left wire 18 is the upper side of the right hand 20 It is connected to the part 22. In the left support portion 34, the inner 18a of the left wire 18 is movable (slidable) in the longitudinal direction of the inner 18a of the wire 18 with respect to the left hand portion 20.

As described above, the approach operation unit 35 includes the right support 33 and the left support 34, and the extension end of the inner 18a of the right wire 18 is connected to the upper portion 22 of the left hand 20. The extension end of the inner 18 a of the left wire 18 is connected to the upper portion 22 of the right hand portion 20.

In this case, the inners 18a and 19a of the two right wires 18 and 19 are passed through the right support 33 of the right hand 20 and connected to the upper side 22 of the left hand 20, and the two left The inners 18 a and 19 a of the wires 18 and 19 may be passed through the left support 34 of the left hand 20 and connected to the upper side 22 of the right hand 20.

(Configuration for raising and lowering operation of the hand unit)
As shown in FIG. 4 and FIG. 7, in the right and left hand portions 20, the handle portion 32 held by the worker is connected to the lower portion of the lateral side 21 opposite to the upper side portion 22. A lift operation switch 23 is provided on the upper surface of the handle portion 32 in the right hand portion 20. In the left hand portion 20, a lowering operation switch 24 is provided on the upper surface of the handle portion 32.

As shown in FIGS. 1, 2 and 3, the right and left harnesses 14 connected to the control device 8 enter the inside of the right and left arm parts 2 and pass through the inside of the arm parts 2 to It is extended to the upper end. A harness 14 is extended downward from the opening at the upper end of the right and left arm portions 2, the right harness 14 is connected to the ascent operation switch 23, and the left harness 14 is ascended as the descent operation switch Connected to 24.

As shown in FIGS. 1 and 2, when the lifting operation switch 23 is pressed, the rotating body is rotationally driven by the electric motor 27 to the winding side in the lifting device 17, and the inners 18a and 19a of the wires 18 and 19 are rotated. The hand unit 20 is raised by being taken up by the body.
When the lowering operation switch 24 is pressed, the rotary body is rotationally driven to the delivery side by the electric motor 27, the inners 18a and 19a of the wires 18, 19 are fed out from the rotary body, and the hand portion 20 is lowered.

When the pushing operation of the raising operation switch 23 and the lowering operation switch 24 is stopped, the electric motor 27 is stopped. The electric motor 27 is provided with an electromagnetic brake (not shown), and the electromagnetic brake is automatically released when the electric motor 27 is actuated, and is automatically braked when the electric motor 27 is stopped and not energized. It becomes a state.

(Handling operation of luggage by hand)
As shown in FIG. 4, a cube-shaped package B such as a cardboard box is assumed.
As shown in FIGS. 1 and 2, the operator wearing the assist device holds the handle portion 32 of the right hand unit 20 with the right hand so that the operator shakes hands with the right hand and the left hand facing forward, with the left hand When the handle portion 32 of the left hand portion 20 is held, the lateral side portion 21 of the hand portion 20 is oriented in the front-rear direction, and the upper portion 22 of the hand portion 20 is oriented in the left-right direction.

As shown in FIG. 4, it is assumed that a load B is placed on the floor for the worker who has attached the assist tool. The operator presses the lateral side 21 (anti-slip member 29) to the right lateral wall of the luggage B while bringing the upper side 22 into contact with the ceiling of the luggage B in the right hand portion 20. In the left hand portion 20, the lateral side 21 (anti-slip member 29) is pressed against the left lateral wall of the luggage B while the upper side 22 is in contact with the ceiling of the luggage B. As a result, the non-slip members 29 of the right and left hand portions 20 adsorb to the right and left lateral wall portions of the load B.

In this case, since the upper portion 22 is in contact with the ceiling portion of the load B in the hand portion 20, the worker can load the side portion 21 (the anti-slip member 29) into the load B without bending the waist too much. Can be pressed against the lateral wall of the

In the state shown in FIG. 4, when the hand unit 20 is raised, the load B is lifted together with the hand unit 20 by the suction action of the non-slip member 29 of the hand unit 20.
In this case, even if the lateral side of the luggage B tries to move downward (if it falls) along the lateral side 21 (the non-slip member 29) of the hand 20 due to the weight of the luggage B, the hand The adsorptive action of the non-slip members 29 prevents the downward movement of the lateral side of the package B, and the package B is held by the hand portion 20.

As described above, when the load B is lifted by the hand portion 20, the weight of the load B is applied to the hand portion 20, and tension is generated on the inner 18a of the right and left wires 18. The inner 18a of the right wire 18 generates an operation force to move the left hand 20 toward the right hand 20, and the inner 18a of the left wire 18 causes the right hand 20 to be moved to the left hand. An operation force is generated to try to approach the unit 20.

As described above, an operation force for causing the right and left hand portions 20 to approach each other is generated, and the lateral side 21 (the non-slip member 29) of the right hand portion 20 is pressed against the right lateral wall portion of the load B. The lateral side 21 (anti-slip member 29) of the left hand portion 20 is pressed against the left side of the load. Thereby, the certainty of the holding of the load B by the right and left hand units 20 is enhanced.

(Working form of assist instrument)
For example, when placing a pallet or a load B placed on the floor on a high shelf or a truck bed, the operator crouchs and holds the load B on the pallet or floor by hand and extends the hand downward. It is assumed that the user lifts the load B by hand and places the load B on a high shelf or a truck bed by hand.

In a state where the worker wearing the assist tool performs the above-described work, the control device 8 controls the right and left leg acting parts 3 and the lifting device 17 based on the pressing operation of the raising operation switch 23 and the lowering operation switch 24. Will be described.

As shown in FIGS. 1 and 2, when the worker wears the assist tool, the electric motor 27 of the lifting device 17 is operated unless the worker presses both of the raising operation switch 23 and the lowering operation switch 24. Is stopped, and the electric motors of the right and left leg acting parts 3 are in a stopped state (freely rotating state).

When the worker walks or when the worker bends the knee to drop the waist (shaking), the operation arm 12 swings to follow the thigh of the worker, and the worker's motion Is not hampered.

When the operator holds the load B on the pallet or floor while crouching, when the operator presses the lowering operation switch 24, the electric motor 27 in the lifting device 17 operates on the delivery side, and the inners 18a, 19a of the wires 18, 19 Is fed out and the hand unit 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, so the operator holds the load B by the hand unit 20 ((holding of the load by the hand unit Operation))).

As described in the (lifting device) of the preceding paragraph, the electric motor 27 is provided with an electromagnetic brake (not shown), and the electromagnetic brake is automatically braked when the electric motor 27 is stopped and not energized. .
When the electric motor 27 is stopped, the inner parts 18a and 19a of the wires 18 and 19 are not pulled out from the lifting device 17. Even if the weight of the load B is applied to the hand part 20 as described later, the hand part 20 is It does not go down.

The operator lifts the luggage B by standing up while holding the luggage B by the hand unit 20. When the worker pushes the raising operation switch 23, the operation arm 12 is driven downward in the leg acting part 3, the thigh of the worker is operated downward, and the rising of the worker is assisted.

After the operator stands up in a state of pressing the raising operation switch 23, it is determined that the operator has completely stood up when it is detected in the leg action part 3 that the operation arm 12 has reached a position where the operation arm 12 is almost directly downward. As a result, the electric motor of the leg acting part 3 is in a stopped state (freely rotating state).

Next, in the lifting device 17, the electric motor 27 operates on the winding side, the inners 18a and 19a of the wires 18 and 19 are wound up, and the hand unit 20 is raised. When the hand unit 20 ascends to a desired position, the electric motor 27 is stopped by stopping the pressing operation of the raising operation switch 23, and the hand unit 20 is stopped.

The worker walks and moves to a high shelf, a truck bed or the like on which the luggage B should be placed. When the operator arrives at a high rack or truck bed and the like, and the operator pushes the lowering operation switch 24, the electric motor 27 operates in the raising side in the lifting device 17, and the inner 18a of the wires 18, 19 is moved. 19a is drawn out and the hand unit 20 is lowered.

The operator places the package B on a high shelf, a truck bed or the like, and removes the hand unit 20 from the package B. When the package 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 package B.

(First alternative embodiment)
In the above-described (the embodiment for carrying out the invention), the right and left hand units 20 may be configured as follows.

As shown in FIG. 8, in the hand portion 20, the two lateral sides 21 are connected so as to intersect at about 90 degrees, and the upper side 22 is connected over the upper portions of the two lateral sides 21; A non-slip member 29 (substrate 30) is attached to each of the two lateral sides 21 by a countersunk screw 31.

In the right hand portion 20, the handle portion 32 and the raising operation switch 23 are provided on one lateral side portion 21, and the right support portion 33 is connected to the upper side portion 22. In the left hand portion 20, a handle portion 32 and a lowering operation switch 24 are provided on one lateral side portion 21, and a left support portion 34 is connected to the upper side portion 22.

With the above structure, in the right hand unit 20, one lateral side 21 (anti-slip member 29) is placed on the right lateral wall of the luggage B while the upper side 22 is in contact with the ceiling portion of the rear right corner of the luggage B The other side part 21 (anti-slip member 29) is pressed against the rear side wall part of the load B.
In the left hand portion 20, one lateral side 21 (the non-slip member 29) is pressed against the left lateral wall of the luggage B while the upper portion 22 is in contact with the ceiling of the left front corner of the luggage B And press the other lateral side 21 (anti-slip member 29) against the front lateral wall of the load B.

As a result, as shown in FIG. 8, the non-slip members 29 of the right and left hand portions 20 adsorb to the right and left lateral wall portions of the package B and the front and rear lateral wall portions.
When the load B is lifted by the hand unit 20 in the state shown in FIG. 8, the tension of the inner 18 a of the right and left wires 18 causes the right and left hand units 20 to move along the diagonal of the load B in plan view. An operating force for approaching is generated.

(Second alternative embodiment)
In the above-mentioned (embodiments for carrying out the invention), the arrangement of the inners 18 a of the right and left wires 18 may be configured as follows.

As shown in FIG. 9, the inner 18a of the right wire 18 is passed through the right support 33 of the right hand 20, and the inner 18a of the left wire 18 is passed through the left support 34 of the left hand 20. ing. Between the right and left hand portions 20, the extension end of the inner 18 a of the right wire 18 and the extension end of the inner 18 a of the left wire 18 are connected by the connection member 36.

Thus, when the load B is lifted by the hand unit 20, the tension of the inner 18a of the right and left wires 18 generates an operating force for causing the right and left hand units 20 to approach each other.

In this case, the inners 18a and 19a of the two right wires 18 and 19 are passed through the right support portion 33 of the right hand unit 20, and the inners 18a and 19a of the two left wires 18 and 19 are the left hand The left support portion 34 of the portion 20 passes the extension ends of the inners 18a and 19a of the right wires 18 and 19 and the extension ends of the inners 18a and 19a of the left wires 18 and 19 by the connection member 36. It may be connected.

The connection member 36 may be eliminated, and the inner 18a (19a) of the right wire 18 (19) and the inner 18a (19a) of the left wire 18 (19) may be constituted by one continuous wire. .

The configuration relating to the wires 18 and 19 ( inners 18a and 19a) described in the (second another embodiment) of the present section can be applied to the right and left hand portions 20 of the (first other embodiment) described above.

(Third Embodiment)
In the above-mentioned (embodiments for carrying out the invention), the arrangement of the inners 18 a of the right and left wires 18 may be configured as follows.

As shown in FIG. 10, in the right and left hand portions 20, the right support portion 33 and the left support portion 34 are eliminated, and the inner 18a of the right wire 18 is connected to the right hand portion 20, and the left wire The 18 inners 18 a are connected to the left hand unit 20.

An approach operation portion 35 is attached to a predetermined portion between the arm portion 2 (supporting member 16) and the hand portion 20 in the inner 18 a of the right and left wires 18. The approach operation unit 35 includes a restriction member 37 such as a string member, a chain, or a rod, and ring members 38 attached to both ends of the restriction member 37, and the inner 18a of the right wire 18 is the right ring member 38. And the inner 18a of the left wire 18 is passed through the left ring member 38. The length (predetermined interval W1) of the approach operation unit 35 is set to be shorter (narrower) than the interval W2 between the upper portions (support members 16) of the right and left arm portions 2.

When a load B having a lateral width W3 larger than the predetermined distance W1 is lifted by the hand 20, a predetermined portion between the arm 2 (supporting member 16) and the hand 20 at the inner 18a of the right and left wires 18 The distance between the right and left wires 18 is restricted to a predetermined distance W1 by the approach operation unit 35, and the state in which the inner 18a of the right and left wires 18 move outward is restricted.
As a result, tension is generated in the inner 18a of the right and left wires 18, and an operation force is generated to cause the right and left hand portions 20 to approach each other.

In this case, the inners 18a and 19a of the two right wires 18 and 19 are passed through the right ring member 38 of the approach operation unit 35 and connected to the right hand unit 20, and the two left wires 18 and 18 The 19 inners 18 a and 19 a may be passed through the left ring member 38 of the approach operation unit 35 and connected to the left hand unit 20.

Fourth Embodiment
In the right and left hand units 20 of the first embodiment (first embodiment) to the third embodiment, as shown in FIG. 11 and FIG. May be abolished.

In this case, the inner 18a, 19a of the right wire 18, 19 is connected to the right hand unit 20, and the inner 18a, 19a of the left wire 18, 19 is connected to the left hand unit 20. May be abolished.
On the contrary, in the right and left hand units 20 of FIGS. 11 and 12, the approach operation unit 35 according to the above-described (Embodiments for Implementing the Invention) (First Embodiment) to (Third Embodiment). May be provided.

Fifth Embodiment
The right and left hand units 20 may be configured as shown in FIGS. 13-16.

(Configuration of hand section)
As shown in FIGS. 13, 15 and 16, a box-like (square cylindrical) base 39 is provided by bending and connecting two sets of plate materials, and the handle portion 32 is provided on the upper wall 39 b of the base 39. It is connected and extended sideways. In the right hand portion 20, the raising operation switch 23 is provided on the upper wall 39b of the base 39, and in the left hand portion 20, the lowering operation switch 24 is provided on the upper wall 39b of the base 39.

Two fulcrum shafts 40 are connected across the vertical wall 39 a of the base 39. The bosses 41 a and 42 a are connected to the upper portions of the first holding arm 41 and the second holding arm 42, and the bosses 41 a and 42 a of the first holding arm 41 and the second holding arm 42 rotate around the fulcrum shaft 40. It is freely supported. The first holding arm 41 and the second holding arm 42 are swingably supported by the base 39, and the first holding arm 41 and the second holding arm 42 swing so as to approach and separate from each other.

As shown in FIGS. 13 and 14, the lateral side 21 is connected to the lower portion of the first holding arm 41 and the second holding arm 42, and the non-slip member 29 (substrate 30) is a lateral side by the countersunk screw 31. It is attached to the part 21.

In this case, the side portion 21 of the first holding arm 41 and the non-slip member 29 (substrate 30) are formed in an arc shape projecting to the second holding arm 42 side (the side wall portion side of the load B) in side view There is. The side portion 21 of the second holding arm 42 and the anti-slip member 29 (substrate 30) are formed in an arc shape projecting to the first holding arm 41 side (the side wall portion side of the luggage B) in a side view.

As shown in FIGS. 13, 15 and 16, the arm portions 41b and 42b extend from the bosses 41a and 42a of the first holding arm 41 and the second holding arm 42, and the long holes 41c and 42c are formed in the arm portions 41b and 42b. Is open. A spring 43 urging the first holding arm 41 and the second holding arm 42 toward each other is attached to the bosses 41a and 42a and the arms 41b and 42b of the first holding arm 41 and the second holding arm 42. ing.

An opening 39 c is provided in the upper wall 39 b of the base 39, and a plate-like linking member 44 is inserted into the opening 39 c of the base 39 so as to be vertically movable. A pin-like connecting member 45 is connected to the lower part of the connecting member 44, and the inners 18a and 19a of the wires 18, 19 are connected to the upper part of the connecting member 44.

Upward and downward long holes 39 d are opened in the vertical wall 39 a of the base 39. The linking member 45 is inserted into the long holes 41 c and 42 c of the first holding arm 41 and the second holding arm 42, and is also inserted into the long hole 39 d of the base 39.

Since the linking member 45 is inserted into the long holes 41c and 42c of the first holding arm 41 and the second holding arm 42, the first holding arm 41 and the second holding arm 42 are in a linked state with each other, The first holding arm 41 and the second holding arm 42 are similarly operated to the approaching side, and are similarly operated to the separating side.

(Handling operation of luggage by hand)
The state shown in FIG. 13 and FIG. 15 is a state in which the load B is not held by the hand unit 20, and the first holding arm 41 and the second holding arm 42 are operated by the spring 43 toward the approaching side.

When the first holding arm 41 and the second holding arm 42 are operated toward the approaching side, the linking member 45 is raised by the arm portions 41 b and 42 b of the first holding arm 41 and the second holding arm 42. And the upper end portion of the long hole 39d of the base portion 39 stop the operation on the approaching side of the first holding arm 41 and the second holding arm 42.

When holding the package B by the hand unit 20, the operator holds the first holding arm 41 while holding the holding unit 32, and brings the holding unit 32 and the holding unit 32 so that the first holding arm 41 approaches the holding unit 32. The first holding arm 41 is gripped and operated. As a result, the first holding arm 41 is operated to the separating side, and the linking member 45 also operates the second holding arm 42 to the separating side.

When the first holding arm 41 and the second holding arm 42 are operated to be separated, the linking member 45 is lowered by the arm portions 41 b and 42 b of the first holding arm 41 and the second holding arm 42. And the lower end portion of the long hole 39d of the base portion 39 stop the operation on the separated side of the first holding arm 41 and the second holding arm 42.

As described above, by operating the first holding arm 41 and the second holding arm 42 on the separated side, in the hand portion 20, the load is held between the lateral side portions 21 of the first holding arm 41 and the second holding arm 42. B is inserted, and the lateral sides (anti-slip members 29) of the first holding arm 41 and the second holding arm 42 are pressed against the lateral wall of the load B.

When the load B is lifted by the hand unit 20 and the weight of the load B is applied to the hand unit 20 in the above-described state, tension is generated in the inners 18 a and 19 a of the wires 18 and 19. The members 44 and 45 move up (the base 39 moves down with respect to the link members 44 and 45).

As a result, an operating force for operating the first holding arm 41 and the second holding arm 42 toward the approaching side is generated by the linking members 44 and 45, and the side portions 21 of the first holding arm 41 and the second holding arm 42 ( The non-slip member 29) is pressed against the lateral wall of the load B, and the load B is held by the hand unit 20.

When the load B is placed on the floor, the weight of the load B is not applied to the hand portion 20, so that the operating force for operating the first holding arm 41 and the second holding arm 42 to the approaching side disappears.
Thus, as described above, the operator grips the handle portion 32 and the first holding arm 41 to operate the first holding arm 41 and the second holding arm 42 away from the hand portion 20. Release the package B.

(Sixth embodiment)
In the right and left hand units 20 of the above-described (fifth alternative embodiment), the lateral side 21 may be configured as shown in FIG.

Horizontal axis P2 (axis along the lateral wall of the load B) in a direction perpendicular to the swing direction of the first holding arm 41 and the second holding arm 42 in the lower part of the first holding arm 41 and the second holding arm 42 The lateral side 21 is swingably supported around the core). The length L2 from the axial center P2 to the upper end in the lateral side 21 is set to be longer than the length L1 from the axial center P2 to the lower end in the lateral side 21 in a side view.

As described in the above (fifth other embodiment), in the state where the load B is held by the hand portion 20, the lateral wall portion of the load B is along the side portion 21 (the non-slip member 29) of the hand portion 20. When trying to move downward, the lateral side 21 (anti-slip member 29) of the hand 20 tends to swing downward along with the load B.

As a result, a portion of the lateral side 21 (the anti-slip member 29) of the hand 20 above the axial center P2 is strongly pressed against the lateral wall of the luggage B. It can be held properly.

The lateral side 21 of the hand portion 20 described in the present paragraph (sixth alternative embodiment) is supported so as to be freely pivotable about a transversely oriented axis P2 (corresponding to an axis along the lateral wall of the load B). The configuration may be applied to the hand unit 20 of the above-described (Embodiments for Implementing the Invention) (First Embodiment) to (Fifth Embodiment).

(Seventh embodiment)
As shown in FIG. 18, in the contact surface of the non-slip member 29, the recess 29 b between the convex portion 29 a and the convex portion 29 a in a square shape extends across the lateral width of the anti-slip member 29 in cross section. You may form.

As shown in FIG. 19, in the contact surface of the non-slip member 29, in cross section, the convex portion 29 a having an isosceles triangle shape and the recess 29 b between the convex portions 29 a are provided along the lateral direction. It may be formed across the width.

As shown in FIG. 20, in the contact surface of the non-slip member 29, in a cross-sectional view, a convex portion 29a having a right-triangular shape (the short side is upper with respect to the long side of the right triangular) and the convex portion 29a. The recess 29 b may be formed across the lateral width of the anti-slip member 29 in the lateral direction.

As shown in FIG. 21, on the contact surface of the non-slip member 29, the convex portion 29 a obliquely upward and the concave portion 29 b between the convex portions 29 a in a cross-sectional view have the width of the non-slip member 29 along the lateral direction. You may form over.

In the contact surface of the non-slip member 29, the convex portion 29a and the concave portion 29b are not formed along the lateral direction across the lateral width of the non-slip member 29, but a small circular or square convex portion 29a in front view The recess 29 b may be disposed along the vertical direction and the lateral direction of the contact surface of the anti-slip member 29.

Eighth Embodiment
In the assist device according to the above-described (first embodiment) (second embodiment) (fourth embodiment) to (third embodiment), right and left arms The part 2 may be eliminated and one arm part 2 may be provided.

According to this structure, the two wires 18 are extended from one arm 2 and the right hand 20 is connected to one of the two wires 18 and the left hand is connected to the other of the two wires 18. Connect the unit 20. Alternatively, one wire 18 is extended from one arm portion 2 and the end of one wire 18 is bifurcated to connect the right hand portion 20 to one of the bifurcated portions, and the bifurcated portion The left hand unit 20 is connected to the other of the two.

(Ninth Embodiment)
In the above-described (embodiments for the invention) (first alternative embodiment) to (eighth alternative embodiment), the raising operation switch 23 is provided on the left hand unit 20, and the lowering operation switch 24 is provided on the right hand unit You may prepare for 20. Both the raising operation switch 23 and the lowering operation switch 24 may be provided in one hand portion 20 of the right or left.

The assist device may be configured not to include the right and left leg acting parts 3. Lifting device 17, lifting operation switch 23 and lowering operation switch 24 are eliminated, wires 18 and 19 are connected to main body 1 and arm 2, the position of hand 20 is fixed, and lifting and lowering of hand 20 is performed. It may be configured not to perform.

(Tenth alternative embodiment)
In the said embodiment, although the hand part 20 is mounted | worn with the worker and it is used for the assist instrument which assists holding | maintenance of the luggage | load by a worker, it is not limited to this. The hand portion can also be applied to a winch or the like supported on the ceiling of a building.

1 body 2 arm 18 and 19 wire (hanging mechanism)
Reference Signs List 20 hand part 21 side part 22 upper part 29 anti-slip member 30 base plate 31 mounting member 33 right support part 34 left support part 35 approach operation part 41 first holding arm 42 second holding arm B load L1, L2 length P2 axis Core W1 predetermined interval W2 interval

Claims (14)

1. A load holding hand unit connected to and suspended by the suspension mechanism,
   A lateral side pressed against the lateral wall of the load,
   A luggage holding hand portion provided on the lateral side so as to be in contact with the lateral wall of the luggage, and provided with an adhesive non-slip member.
2. An upper portion extending laterally from an upper portion of the lateral side;
   The hand part for luggage holding according to claim 1, wherein the luggage is held in a state where the lateral side is pressed against the lateral wall of the luggage and the upper side is in contact with the ceiling of the luggage.
3. A first holding arm and a second holding arm pivotally supported are provided, and the first holding arm and the second holding arm are provided with the lateral side,
   The load with the lateral side of the first holding arm pressed against one lateral wall of the load and the lateral side of the second holding arm pressed against the other lateral wall of the load The hand part for holding a load according to claim 1, wherein is held.
4. The load holding hand portion according to any one of claims 1 to 3, wherein the lateral side portion is formed in an arc shape projecting to the lateral wall side of the load in a side view.
5. The lateral side is pivotally supported about a lateral axis along the lateral wall of the load;
   The length from the said axis to the upper end in the lateral side is set longer than the length from the axial to the lower end in the lateral side. The hand part for holding luggage described in the paragraph.
6. The hand portion for holding a load according to any one of claims 1 to 5, wherein unevenness is formed on the contact surface of the non-slip member.
7. The load holding hand portion according to any one of claims 1 to 6, further comprising a substrate to which the anti-slip member is adhered, and a mounting member for attaching and detaching the substrate to the lateral side.
8. The hand portion for holding a load according to any one of claims 1 to 7, wherein the non-slip member is a gel material or a rubber material having adsorptivity.
9. A body attached to the back of the worker;
   An arm portion extending forward from the main body portion;
   The suspension mechanism includes right and left wires extending downward from the upper portion of the arm portion;
   An assist device wherein the load holding hand portion according to any one of claims 1 to 8 is connected to each of the right end of the wire and the left end of the wire. .
10. A body attached to the back of the worker;
    An arm portion extended to the front side from the main body portion;
    Right and left wires extending downward from the top of the arm portion;
    Right and left hand portions connected to the extended ends of the right and left wires;
    When the weight of the load is applied to the right and left hand portions while the load is held by the right and left hand portions, an operating force that causes the right and left hand portions to approach each other by the weight of the load. And an approach operation unit that generates an assist device.
11. The approaching operation unit is
    A right support portion provided in the right hand portion, the right wire being supported movably in the longitudinal direction of the wire with respect to the right hand portion;
    A left support portion provided on the left hand portion, the left wire being movably supported in the longitudinal direction of the wire with respect to the left hand portion;
    The assisting device according to claim 10, wherein the extension end of the right wire is connected to the left hand portion, and the extension end of the left wire is connected to the right hand portion.
12. The approaching operation unit is
    A right support portion provided in the right hand portion, the right wire being supported movably in the longitudinal direction of the wire with respect to the right hand portion;
    A left support portion provided on the left hand portion, the left wire being movably supported in the longitudinal direction of the wire with respect to the left hand portion;
    11. The assist device according to claim 10, wherein the extension end of the right wire and the extension end of the left wire are connected.
13. The assist device according to claim 12, wherein the right wire and the left wire are continuous wires.
14. Right and left said arm parts are provided;
    The right wire is extended downward from the upper part of the right arm, and the right hand is connected to the extending end of the right wire.
    The left wire is extended downward from the upper part of the left arm, and the left hand is connected to the extended end of the left wire.
    The approaching operation unit is
    It is attached over a predetermined portion between the arm portion and the hand portion in the right and left wires, and restricts the state in which the predetermined portions of the right and left wires move outward, The assist device according to claim 10, wherein a distance between the predetermined portions of the left wire is maintained at a predetermined distance narrower than a distance between upper portions of the right and left arm portions.
    
    
    

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