JP2021058973A - Baggage holding device - Google Patents

Abstract

To provide a baggage holding device which facilitates an operation for separating a plurality of arms from each other in a state of gripping a gripping section.SOLUTION: A baggage holding device includes a gripping section 30 which can be gripped by an operator and holds baggage between a plurality of arms AM by bringing the plurality of arms AM close to each other. The baggage holding device includes: a link section 79 which interlocks with the plurality of arms AM, is located on a lower side of the gripping section 30 when the plurality of arms AM are in the mutually closest state, and separates the plurality of arms AM from each other by being operated to an upper side; and an operation section 80 which is connected to the link section 79. The operation section 80 has a first portion 81 which is located on a lower side of the link section 79 and extends from the link section 79 to the device outside in plan view and a second portion 82 which extends to the upper side from a device outside end of the first portion 81. A finger hook section 82a to which a finger of the operator can be hooked is provided at an upper end of the second portion 82.SELECTED DRAWING: Figure 6

Description

The present invention relates to a luggage holding device including a grip portion that can be gripped by an operator and a plurality of arms that can be approached and separated from each other.

As the luggage holding device as described above, for example, the one described in Patent Document 1 is already known. This luggage holding device (“assist device” in Patent Document 1) is provided between a plurality of arms (“first holding arm” and “second holding arm” in Patent Document 1) by bringing them close to each other. It is configured to hold luggage.

According to this luggage holding device, luggage can be stably held.

Japanese Unexamined Patent Publication No. 2019-25640

The luggage holding device described in Patent Document 1 includes a link portion (“support portion” in Patent Document 1) that interlocks with a plurality of arms. Then, in order to separate the plurality of arms from each other, it is necessary to operate the link portion upward with respect to the grip portion (“handle portion” in Patent Document 1). Further, in order to bring the plurality of arms close to each other, it is necessary to operate the link portion downward with respect to the grip portion.

However, in the luggage holding device described in Patent Document 1, the grip portion and the link portion are provided at positions relatively far from each other. Therefore, it is difficult for the operator to manually operate the link portion while gripping the grip portion. Therefore, it is difficult for the operator to perform the operation of separating the plurality of arms from each other while gripping the grip portion.

An object of the present invention is to provide a luggage holding device that can easily perform an operation of separating a plurality of arms from each other while gripping a grip portion.

The features of the present invention include a grip portion that can be gripped by an operator, a base portion that supports the grip portion, and a plurality of arms that are supported by the base portion and can be approached and separated from each other. When a luggage holding device in which luggage is held between the plurality of arms by bringing the arms close to each other, the plurality of arms are interlocked with the plurality of arms, and the plurality of arms are closest to each other. The operation unit includes a link portion which is located below the grip portion and is operated upward to separate the plurality of arms from each other, and an operation portion which connects to the link portion. A first portion located below the link portion and extending outward from the link portion to the outside of the device in a plan view, and a second portion extending upward from the outer end portion of the device of the first portion. A finger hooking portion is provided at the upper end portion of the second portion so that the operator's finger can be hooked.

According to the present invention, an operation unit connected to the link unit is provided, and the operation unit has a second portion extending upward. A finger hook is provided at the upper end of the second portion. Therefore, the grip portion and the finger hook portion are located at positions relatively close to each other. As a result, the operator can easily hook his / her finger on the finger hook by extending, for example, the index finger and the middle finger while gripping the grip. Then, when the finger hooking portion is operated upward by the finger hooked on the finger hooking portion, the link portion is operated upward. As a result, the plurality of arms are separated from each other.

Therefore, according to the present invention, it is possible to realize a luggage holding device that can easily perform an operation of separating a plurality of arms from each other while holding the grip portion.

Further, in the present invention, it is preferable that the finger hook portion is provided so as not to overlap with the grip portion in a plan view.

According to this configuration, even if the finger hook portion is operated upward, the finger hook portion and the grip portion do not interfere with each other. Therefore, the movable distance of the operating portion when the operating portion is operated in the vertical direction is not limited by the interference between the finger hook portion and the grip portion. As a result, it is easy to design a relatively long movable distance of the operation unit when the operation unit is operated in the vertical direction. As a result, the operability of the operation unit tends to be good.

Further, in the present invention, each of the arms has a first rod-shaped portion extending in the vertical direction, a second rod-shaped portion extending in parallel with the first rod-shaped portion, a lower end portion of the first rod-shaped portion, and the second rod-shaped portion. It has a third rod-shaped portion in a horizontal posture provided over the lower end portion of the above, and a plate-shaped member fixed to the upper portion of the third rod-shaped portion and extending along the longitudinal direction of the third rod-shaped portion. It is preferable that the luggage is held between the plurality of plate-shaped members by bringing the plurality of arms close to each other.

According to this configuration, the contact area of the plurality of arms with respect to the load tends to be relatively large. Therefore, when the load is easily deformed, it is easy to avoid a situation in which the plurality of arms deeply bite into the load. As a result, when the load held between the plurality of arms is unloaded, the plurality of arms can be easily separated from the load.

Further, in the present invention, the base portion is provided with a cord-like body for suspending the base portion, and the base portion has a mounting portion attached to the lower end portion of the cord-shaped body portion and a base portion main body for supporting the grip portion. It is preferable that the lower end portion of the mounting portion is connected to the upper end portion of the base body in a state in which the lower end portion can swing relative to the swinging shaft core along the front-rear direction.

According to this configuration, when a plurality of arms and the load are swung left and right while the load is held between the plurality of arms, the mounting portion swings relative to the base body, thereby causing the rope. The shape and the mounting part tend to be in the same posture.

For example, when a plurality of arms and a load are swung to the left while the load is held between the plurality of arms, the mounting portion swings to the right with respect to the base body, thereby forming a cord-like body. The mounting portion tends to be tilted upward to the right.

As a result, deterioration due to friction or collision between the lower end portion and the mounting portion of the cord-like body is unlikely to occur.

Further, in the present invention, the plurality of arms are composed of a front arm located at the front portion of the device and a rear arm located rearward of the front arm, and can approach and separate from each other in the front-rear direction. It is a long member that connects the front arm and the base portion, and is a long member that connects the front linking member that is inclined forward and downward, and the rear arm and the base portion, and is rear. A rear linking member that is inclined downward is provided, and the front end portion of the link portion is connected to the front portion of the front linking member in a state that allows relative swing around the first swing axis along the left-right direction. The rear end portion of the link portion is connected to the rear portion of the rear linking member in a state in which it can swing relative to the second swing shaft core along the left-right direction, and the front arm and the rear end portion thereof. When the arms are closest to each other, the front linking member extends from the position of the first swing axis in the front-rear direction to the front-rear center position between the front arm and the rear arm in the side view. And the link portion overlap, and the rear linking member and the link extend from the position of the second swinging shaft core in the front-rear direction to the front-rear center position between the front arm and the rear arm. It is preferable that the parts overlap.

When the front arm and the rear arm are closest to each other, in a side view, in a configuration in which an opening is formed by the front linking member, the rear linking member, and the link member, foreign matter is caught in the opening and the front arm and the front arm It is assumed that the rear arm cannot be moved normally.

Here, according to the above configuration, when the front arm and the rear arm are closest to each other, between the front arm and the rear arm from the position of the first swing axis in the front-rear direction in the side view. The front linking member and the link portion overlap over the front-rear center position of, and the rear from the position of the second swing axis in the front-rear direction to the front-rear center position between the front arm and the rear arm. The linking member and the link portion overlap. Therefore, the above-mentioned opening is not formed. Therefore, as described above, it is possible to prevent a situation in which the front arm and the rear arm cannot be moved normally.

It is a right side view with the operator wearing the assist device. It is a rear view with the operator wearing the assist device. It is a front view which shows the structure of the wire connection part. It is a right side view which shows the structure of the wire connection part. It is a right side view which shows the structure of the wire connection part and the base part. It is a front view which shows the structure of the operation part and the like. It is a front view which shows the structure of the grip part and the like. It is a right side view which shows the structure of a link part and the like. It is a top view which shows the structure of the operation part and the like. It is a vertical sectional left side view which shows the state which holds the load by the front arm and the rear arm. It is a vertical sectional left side view which shows the state which holds the load by the front arm and the rear arm. It is a vertical sectional left side view which shows the structure of the link part and the like in 1st Embodiment.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of the arrow F shown in FIGS. 1, 4, 5, 8 to 12 is defined as “front”, and the direction of arrow B is defined as “rear”. 2. The direction of the arrow L shown in FIGS. 3, 6, 7, and 9 is "left", and the direction of the arrow R is "right". Further, the direction of the arrow U shown in FIGS. 1 to 8 and 10 to 12 is defined as "up", and the direction of the arrow D is defined as "down".

[Overall configuration of assist device and main body]
As shown in FIGS. 1 and 2, the assist device A (corresponding to the “luggage holding device” according to the present invention) has a main body 1 attached to the back of the worker and extends from the upper part to the upper side of the main body 1. The left and right support arms 2 extended to the front side, the left and right leg action portions 3 provided at the lower part of the main body portion 1, are provided, and the attachment belt 4 for mounting on the operator and the left and right shoulder belts are provided. 5 is provided.

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

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

The weights of the assist device A and the luggage N (see FIGS. 10 and 11) are mainly applied to the waist of the worker via the mounting belt 4, and the weights of the assist device A and the luggage N are more stable by the waist of the worker. Is supported. The left and right shoulder belts 5 mainly exert a function of stopping the state in which the main body 1 is about to move backward from the worker's back.

[Left and right leg action parts]
As shown in FIGS. 1 and 2, the leg acting portion 3 includes a drive base portion 10, a transmission case 11, an operation arm 12, a leg belt 13, and the like. The drive base 10 is supported on 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 drive 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-shaped leg belt 13 is attached to the operation arm 12. A transmission mechanism (not shown) composed of a plurality of spur gears is provided inside the transmission case 11, and an electric motor (not shown) is provided inside the drive base 10. The transmission mechanism is provided by the electric motor. The operation arm 12 is oscillated and driven around the horizontal axis P1.

When the main body 1 is attached to the back of the operator, when the operator winds the attachment belt 4 around the waist and fixes it, the left and right leg action portions 3 (drive base 10) are supported together with the attachment belt 4. It can move in the left-right direction along 7.

The distance between the left and right leg action portions 3 is determined by the degree of winding of the attachment belt 4 around the waist of the operator, and the positions of the left and right leg action portions 3 are determined by the attachment belt 4. ..

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 a hook-and-loop fastener (not shown). When the worker is wearing the assist device A, the right leg acting portion 3 (transmission case 11) is located on the right side of the worker's waist, and the left leg acting portion 3 (transmission case 11) is located on the left side of the worker's waist. 11) is located.

[Left and right support arms]
As shown in FIGS. 1 and 2, the upper portions of the left and right vertical frames 6 extend forward and upward beyond the left and right shoulders of the operator to form the left and right support arms 2. Left and right support members 16 are attached to the upper ends of the support arm 2, and left and right pulleys (not shown) are rotatably supported by the support members 16.

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

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

The inners 18a and 19a of the two wires 18 and 19 on the right are hung on the pulley of the support member 16 on the right and extend downward. Further, the inners 18a and 19a of the two left wires 18 and 19 are hung on the pulley of the left support member 16 and extend downward.

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

The inners 18a and 19a of the left and right wires 18 and 19 are connected to each of the four rotating bodies inside the support case 26.

The electric motor 27 is operated by the control 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.

[Structure of wire connection]
As shown in FIGS. 3 to 5, the wire connecting portion 21 has a flat plate shape, and the lower portions of the inners 18a and 19a of the wires 18 and 19 are connected to the wire connecting portion 21 so as to be swingable back and forth. Two pins 22 with heads are laterally connected to the wire connecting portion 21, and the pins 22 are provided with a round bar-shaped shaft portion 22a and a head portion 22b having a diameter larger than that of the shaft portion 22a. There is.

An opening 21a is formed in a portion of the wire connecting portion 21 between the two pins 22. The retaining member 28 is attached to a portion of the wire connecting portion 21 between the two pins 22 by a connecting pin 29.

The retaining member 28 is formed by bending a leaf spring, and is provided with a connecting base 28a attached to the wire connecting portion 21 by a connecting pin 29 and a convex portion 28b extending from the connecting base 28a. .. The convex portion 28b of the retaining member 28 enters the opening 21a of the wire connecting portion 21 and projects toward the head portion 22b of the pin 22.

[Structure of grip, base and arm]
As shown in FIGS. 5 and 6, the assist device A includes left and right grip portions 30 and left and right base portions 34. The operator can grip the left and right grip portions 30. Further, the left and right bases 34 support the left and right grips 30.

As shown in FIGS. 6 and 7, each grip portion 30 has a grip frame 31 and a switch pedestal 32. The gripping frame 31 has a U-shape that projects outward in the left-right direction when viewed from the front, and is attached to the outer end surface of the base 34 in the left-right direction. Further, the switch pedestal 32 covers the upper portion and the lateral side portion of the gripping frame 31, and is mounted and supported on the upper portion of the gripping frame 31.

As shown in FIG. 5, two first openings 38 are formed in the upper part of each base 34. A second opening 39 having a diameter larger than that of the first opening 38 is formed so as to be located below the first opening 38 and connected to the first opening 38. A third opening 35 is formed at a position sandwiched between the two second openings 39 in the front-rear direction.

Then, as shown in FIG. 5, the pin 22 is inserted into the first opening 38. Further, the convex portion 28b enters the third opening 35, protrudes toward the head 22b of the pin 22, and hits the lower side portion of the third opening 35. With this configuration, the wire connecting portion 21 is attached to the base portion 34. As a result, the base 34 is suspended by the wires 18 and 19.

As described above, the assist device A includes wires 18 and 19 for suspending the base 34.

Further, as shown in FIG. 8, the base portion 34 has a mounting portion 34a and a base portion main body 34b. The mounting portion 34a is provided on the upper portion of the base portion 34. Further, the above-mentioned third opening 35, first opening 38, and second opening 39 are formed in the mounting portion 34a. As a result, the attachment portion 34a is attached to the lower end portions of the wires 18 and 19 via the wire connection portion 21.

The base body 34b is provided at the lower part of the base 34. The gripping frame 31 described above is attached to the base body 34b. That is, the base body 34b supports the grip portion 30.

The lower end of the mounting portion 34a is connected to the upper end of the base main body 34b in a state where it can swing relative to the swing shaft core Q1 along the front-rear direction.

Further, as shown in FIG. 6, the lift operation switch 23 is provided on the right switch pedestal 32. Further, the switch pedestal 32 on the left is provided with a lowering operation switch 24.

As shown in FIGS. 1 and 2, the left and right harnesses 14 connected to the control device 8 are inside the left and right support arms 2, pass through the inside of the support arms 2, and reach the upper end of the support arms 2. It has been postponed. The harness 14 protrudes from the opening at the upper end of the support arm 2 and extends downward, the right harness 14 is connected to the ascending operation switch 23, and the left harness 14 is connected to the descending operation switch 24. ing.

Further, as shown in FIGS. 6 to 9, the assist device A includes a plurality of arm AMs. The base 34 supports a plurality of arm AMs. In this embodiment, two arm AMs are provided.

The plurality of arm AMs are configured to be close to and separated from each other. Then, as shown in FIGS. 10 and 11, the assist device A is configured so that the luggage N is held between the plurality of arm AMs by bringing the plurality of arm AMs close to each other.

[About ascending operation switch and descending operation switch]
When the ascending operation switch 23 is pushed, the operating arm 12 is oscillated downward by the electric motor in the leg acting portion 3 while the ascending operation switch 23 is being pushed, and the thigh of the operator is operated. The part is operated downward.

When the ascending operation switch 23 is pushed after the operating arm 12 of the leg acting portion 3 is swung downward, the electric motor in the elevating device 17 while the ascending operation switch 23 is being pushed. The rotating body is rotationally driven to the winding side by 27, and the inners 18a and 19a of the wires 18 and 19 are wound around the rotating body. As a result, the plurality of arm AMs are raised.

When the lowering operation switch 24 is pushed, the rotating body is rotationally driven to the feeding side by the electric motor 27 in the raising / lowering device 17 while the lowering operation switch 24 is being pushed, and the inner 18a of the wires 18 and 19 19a is fed out of the rotating body. As a result, the plurality of arm AMs are lowered.

When the pushing operation of the ascending operation switch 23 and the descending operation switch 24 is stopped, the electric motor 27 is stopped in the elevating device 17.

Here, 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 released when the electric motor 27 is stopped or de-energized.

As a result, when the electric motor 27 is stopped, the inners 18a and 19a of the wires 18 and 19 are not extended from the elevating device 17, and even if the weight of the luggage N is applied to the plurality of arm AMs, the plurality of arm AMs Never descends.

When the electric motor is stopped in the leg acting portion 3, the electric motor is in a free rotation state. As a result, when the worker walks, or when the worker bends the waist downward or bends the knee to drop the waist, the operation arm 12 swings so as to follow the thigh of the worker. Therefore, the operation of the operator is not hindered.

[Detailed configuration of the arm]
As shown in FIGS. 6 to 9, in the present embodiment, the plurality of arm AMs are composed of a front arm 40 and a rear arm 50. That is, the front arm 40 and the rear arm 50 are both arm AMs.

The front arm 40 is located at the front of the device. Further, the rear arm 50 is located on the rear side of the front arm 40. The front arm 40 and the rear arm 50 can approach and separate from each other in the front-rear direction.

The front arm 40 includes a right front rod-shaped portion 41 (corresponding to the "first rod-shaped portion" according to the present invention), a left front rod-shaped portion 42 (corresponding to the "second rod-shaped portion" according to the present invention), and a front horizontal rod-shaped portion 43. It has (corresponding to the "third rod-shaped portion" according to the present invention) and a front side plate-shaped member 44 (corresponding to the "plate-shaped member" according to the present invention).

The right front rod-shaped portion 41 is located at the right end portion of the front arm 40. The right front rod-shaped portion 41 extends in the vertical direction.

The left front rod-shaped portion 42 is located at the left end portion of the front arm 40. The left front rod-shaped portion 42 extends in parallel with the right front rod-shaped portion 41.

The front horizontal rod-shaped portion 43 extends in a horizontal posture and is provided so as to extend over the lower end portion of the right front rod-shaped portion 41 and the lower end portion of the left front rod-shaped portion 42. That is, the front horizontal rod-shaped portion 43 extends in the left-right direction.

The front plate-shaped member 44 is fixed to the upper portion of the front horizontal rod-shaped portion 43 and extends along the longitudinal direction of the front horizontal rod-shaped portion 43. That is, the front plate-shaped member 44 extends in the left-right direction.

Further, the rear arm 50 includes a right rear rod-shaped portion 51 (corresponding to the "first rod-shaped portion" according to the present invention), a left rear rod-shaped portion 52 (corresponding to the "second rod-shaped portion" according to the present invention), and a rear. It has a side horizontal rod-shaped portion 53 (corresponding to the "third rod-shaped portion" according to the present invention) and a rear side plate-shaped member 54 (corresponding to the "plate-shaped member" according to the present invention).

The right rear rod-shaped portion 51 is located at the right end portion of the rear arm 50. The right rear rod-shaped portion 51 extends in the vertical direction.

The left rear rod-shaped portion 52 is located at the left end portion of the rear arm 50. The left rear rod-shaped portion 52 extends in parallel with the right rear rod-shaped portion 51.

The rear horizontal rod-shaped portion 53 extends in a horizontal posture and is provided so as to extend over the lower end portion of the right rear rod-shaped portion 51 and the lower end portion of the left rear rod-shaped portion 52. That is, the rear horizontal rod-shaped portion 53 extends in the left-right direction.

The rear plate-shaped member 54 is fixed to the upper portion of the rear horizontal rod-shaped portion 53 and extends along the longitudinal direction of the rear horizontal rod-shaped portion 53. That is, the rear plate-shaped member 54 extends in the left-right direction.

The front arm 40 and the rear arm 50 are configured to be symmetrical with each other.

Then, as shown in FIGS. 10 and 11, in the assist device A, the load N is held between the front plate-shaped member 44 and the rear plate-shaped member 54 by bringing the front arm 40 and the rear arm 50 close to each other. It is configured to.

[Structure of front linking member and rear linking member]
As shown in FIGS. 6 to 9, the assist device A includes left and right front linking members 61 and left and right rear linking members 62.

The left and right front linking members 61 are long members and are inclined downward. The front end portion of the left front linking member 61 is welded and fixed to the left front rod-shaped portion 42. Further, the front end portion of the right front linking member 61 is welded and fixed to the right front rod-shaped portion 41. The rear end portions of the left and right front linking members 61 are connected to the left and right base portions 34.

With this configuration, the left and right front linking members 61 connect the front arm 40 and the left and right bases 34.

Further, the left and right rear linking members 62 are long members and are inclined rearward downward. The rear end portion of the left rear linking member 62 is welded and fixed to the left rear rod-shaped portion 52. Further, the rear end portion of the right rear linking member 62 is welded and fixed to the right rear rod-shaped portion 51. The front end portions of the left and right rear linking members 62 are connected to the left and right base portions 34.

With this configuration, the left and right rear linking members 62 connect the rear arm 50 and the left and right bases 34.

Here, the connection structure between each front linking member 61 and each base 34, and the connection structure between each rear linking member 62 and each base 34 will be described in detail. As shown in FIG. 8, the base main body 34b is formed with a first elongated hole 71, a second elongated hole 72, and a third elongated hole 73. Both the first elongated hole 71 and the second elongated hole 72 extend in the front-rear direction. Further, the third elongated hole 73 extends in the vertical direction.

The first elongated hole 71 is formed at the rear portion of the base main body 34b. Further, the second elongated hole 72 is formed in the front portion of the base main body 34b. The first elongated hole 71 and the second elongated hole 72 are provided at the same positions in the vertical direction.

Further, the third elongated hole 73 is formed at a position between the first elongated hole 71 and the second elongated hole 72.

A first connecting bolt 74 is fixed to the rear end of each front linking member 61. Further, in each front linking member 61, a fourth elongated hole 75 is formed at a position on the front side of the first connecting bolt 74.

Further, a second connecting bolt 76 is fixed to the front end portion of each rear linking member 62. Further, in each rear linking member 62, a fifth elongated hole 77 is formed at a position on the rear side of the second connecting bolt 76.

The first connecting bolt 74 is inserted into the first elongated hole 71. Further, the second connecting bolt 76 is inserted into the second elongated hole 72. Further, the third connecting bolt 78 is provided so as to penetrate the third elongated hole 73, the fourth elongated hole 75, and the fifth elongated hole 77.

As a result, each front linking member 61 can swing up and down. When each front linking member 61 swings upward, the first connecting bolt 74 moves rearward along the first elongated hole 71, and the third connecting bolt 78 moves upward along the third elongated hole 73. To do. At this time, the fourth elongated hole 75 moves to the rear side relative to the third connecting bolt 78.

Further, when each front linking member 61 swings downward, the first connecting bolt 74 moves forward along the first elongated hole 71, and the third connecting bolt 78 moves downward along the third elongated hole 73. Move to the side. At this time, the fourth elongated hole 75 moves to the front side relative to the third connecting bolt 78.

Further, each rear linking member 62 can swing up and down. When each rear coupling member 62 swings upward, the second connecting bolt 76 moves forward along the second elongated hole 72, and the third connecting bolt 78 moves upward along the third elongated hole 73. .. At this time, the fifth elongated hole 77 moves to the front side relative to the third connecting bolt 78.

Further, when each rear linking member 62 swings downward, the second connecting bolt 76 moves rearward along the second elongated hole 72, and the third connecting bolt 78 moves along the third elongated hole 73. Move down. At this time, the fifth elongated hole 77 moves to the rear side relative to the third connecting bolt 78.

Then, as the front linking member 61 and the rear linking member 62 swing upward, the front arm 40 and the rear arm 50 are separated from each other in the front-rear direction. Further, as the front linking member 61 and the rear linking member 62 swing downward, the front arm 40 and the rear arm 50 approach each other in the front-rear direction.

[Structure of link part]
As shown in FIGS. 6 to 9, the assist device A includes left and right link portions 79. Each link portion 79 extends in the front-rear direction.

The front end portion of the left link portion 79 is connected to the front portion of the left front linking member 61 in a state of being relatively swingable around the first swing shaft core R1 along the left-right direction. Further, the rear end portion of the left link portion 79 is connected to the rear portion of the left rear linking member 62 in a state of being relatively swingable around the second swing shaft core R2 along the left-right direction.

The front end portion of the right link portion 79 is connected to the front portion of the right front linking member 61 in a state of being relatively swingable around the first swing shaft core R1. Further, the rear end portion of the right link portion 79 is connected to the rear portion of the right rear linking member 62 in a state of being relatively swingable around the second swing shaft core R2.

With this configuration, the left and right link portions 79 are interlocked with the plurality of arm AMs. That is, the left and right link portions 79 are interlocked with the front arm 40 and the rear arm 50.

Further, as shown in FIGS. 7 and 8, the left and right link portions 79 are located below the grip portion 30 when the plurality of arm AMs are closest to each other. That is, the left and right link portions 79 are located below the grip portion 30 when the front arm 40 and the rear arm 50 are in the closest state to each other.

[Structure of operation unit]
As shown in FIGS. 6 to 9, the assist device A includes left and right operation units 80. The left operation unit 80 is connected to the left link unit 79. Further, the right operation unit 80 is connected to the right link unit 79.

When the left and right operation units 80 are operated upward, the left and right link portions 79 are also operated upward. Then, when the left and right link portions 79 are operated upward, the left and right front linking members 61 and the left and right rear linking members 62 are pushed upward. As a result, the left and right front linking members 61 and the left and right rear linking members 62 swing upward, and the front arm 40 and the rear arm 50 move in a direction in which they are separated from each other.

In this way, by operating the left and right link portions 79 upward, the plurality of arm AMs are separated from each other. That is, the front arm 40 and the rear arm 50 are separated from each other by operating the left and right link portions 79 upward.

Further, when the left and right operation units 80 are operated downward, the left and right link portions 79 are also operated downward. Then, when the left and right link portions 79 are operated downward, the left and right front linking members 61 and the left and right rear linking members 62 are pushed downward. As a result, the left and right front linking members 61 and the left and right rear linking members 62 swing downward, and the front arm 40 and the rear arm 50 move in the direction of approaching each other.

In this way, by operating the left and right link portions 79 downward, the plurality of arm AMs approach each other. That is, the front arm 40 and the rear arm 50 come close to each other by operating the left and right link portions 79 downward.

In the present embodiment, the front arm 40 and the rear arm 50 approach each other by their own weight if the operator releases the left and right operation units 80 without pushing the left and right operation units 80 downward. It is configured to move in the direction.

Further, as shown in FIGS. 6 to 9, each operation unit 80 has a first part 81, a second part 82, and a third part 83. In the present embodiment, each operation unit 80 is composed of a rod-shaped member bent into a U-shape in a plan view.

The first portion 81 is located below the link portion 79 and extends from the link portion 79 to the outside of the device in a plan view.

The second part 82 extends upward from the outer end of the device of the first part 81. In the present embodiment, the second portion 82 has a U-shape in a plan view.

The third portion 83 extends in the vertical direction and connects the link portion 79 and the first portion 81.

A finger hook portion 82a is provided at the upper end portion of the second portion 82. The finger hook portion 82a is configured so that the operator's finger can be hooked.

Further, as shown in FIG. 9, the finger hook portion 82a is provided so as not to overlap the grip portion 30 in a plan view.

As shown in FIGS. 7 and 8, when the front arm 40 and the rear arm 50 are in the closest state to each other, the left and right operating units 80 are located at the lowest positions in the range of motion. At this time, the operator can grip the left and right grip portions 30 while hanging his fingers on the lower end surfaces of the left and right grip frames 31.

Further, at this time, as shown in FIG. 6, the operator extends the fingers hung on the lower end surfaces of the left and right gripping frames 31 while holding the left and right gripping portions 30, and puts the fingers on the left and right finger hooking portions 82a. Can be hooked. Then, when the left and right finger hooks 82a are operated upward, the front arm 40 and the rear arm 50 move in a direction away from each other according to the above configuration.

In the following, with reference to FIGS. 10 and 11, the flow when the luggage N placed on the floor is held by the front arm 40 and the rear arm 50 will be described.

In the examples shown in FIGS. 10 and 11, the luggage N has a bag shape and is easily changed in shape. The luggage N is, for example, a rice bag, a cement bag, or the like.

First, as shown in FIG. 6, the operator hooks his / her fingers on the left and right finger hooks 82a while holding the left and right grips 30. Then, by operating the left and right finger hooks 82a upward, the front arm 40 and the rear arm 50 are separated from each other.

Next, the operator pushes the lowering operation switch 24 while keeping the front arm 40 and the rear arm 50 separated from each other to lower the front arm 40 and the rear arm 50. At this time, as shown in FIG. 10, the operator operates the front plate-shaped member 44 and the rear plate-shaped member 54 so as to descend to a position facing the lower portion of the load N.

Next, the operator releases his / her finger from the left and right finger hooks 82a. As a result, the front arm 40 and the rear arm 50 come closer to each other due to their own weight. As a result, the front plate-shaped member 44 and the rear plate-shaped member 54 enter the lower side of the luggage N.

Then, when the operator pushes the ascending operation switch 23, the front arm 40 and the rear arm 50 are raised. As a result, as shown in FIG. 11, the luggage N is held by the front arm 40 and the rear arm 50.

According to the configuration described above, the operation unit 80 connected to the link unit 79 is provided, and the operation unit 80 has a second portion 82 extending upward. A finger hook portion 82a is provided at the upper end portion of the second portion 82. Therefore, the grip portion 30 and the finger hook portion 82a are located at positions relatively close to each other. As a result, the operator can easily hook the finger on the finger hook portion 82a by extending, for example, the index finger and the middle finger while gripping the grip portion 30. Then, when the finger hooking portion 82a is operated upward by the finger hooked on the finger hooking portion 82a, the link portion 79 is operated upward. As a result, the plurality of arm AMs are separated from each other.

Therefore, with the configuration described above, it is possible to realize the assist device A that can easily perform the operation of separating the plurality of arm AMs from each other while the grip portion 30 is gripped.

[First Embodiment]
In the above embodiment, as shown in FIG. 11, when the front arm 40 and the rear arm 50 are in the closest state to each other, they are surrounded by the front linking member 61, the rear linking member 62, and the link portion 79 in a side view. An opening is formed in this state.

However, the present invention is not limited to this. Hereinafter, the first embodiment according to the present invention will be described focusing on the points different from the above-described embodiment. The configuration other than the parts described below is the same as that of the above embodiment. Further, the same reference numerals are given to the same configurations as those in the above-described embodiment.

As shown in FIG. 12, in the first embodiment according to the present invention, each link portion 79 has a central convex portion 79a. The central convex portion 79a projects upward.

In the side view, the central convex portion 79a overlaps the front linking member 61. Further, the central convex portion 79a overlaps with the rear linking member 62.

Here, in FIG. 12, the central position CE is shown. The center position CE is the front-rear center position between the front arm 40 and the rear arm 50.

Then, as shown in FIG. 12, when the front arm 40 and the rear arm 50 are in the closest state to each other, in the side view, from the position of the first swing axis R1 in the front-rear direction to the center position CE. , The front linking member 61 and the link portion 79 overlap. Further, at this time, in the side view, the rear linking member 62 and the link portion 79 overlap from the position of the second swing shaft core R2 in the front-rear direction to the center position CE.

It should be noted that each of the above-described embodiments is merely an example, and the present invention is not limited to this, and can be changed as appropriate.

[Other Embodiments]
(1) The number of arm AMs provided may be any number of three or more.

(2) The finger hook portion 82a may be provided so as to overlap the grip portion 30 in a plan view.

(3) The arm AM may have any structure. For example, the arm AM may be composed of only rod-shaped members or may be composed of only plate-shaped members.

(4) The plurality of arm AMs may be able to approach and separate from each other in the left-right direction.

The present invention can be used in a luggage holding device including a grip portion that can be gripped by an operator and a plurality of arms that can be approached and separated from each other.

18, 19 wires (cord)
30 Grip part 34 Base part 34a Mounting part 34b Base body 40 Front arm 41 Right front rod-shaped part (first rod-shaped part)
42 Left front rod-shaped part (second rod-shaped part)
43 Front horizontal rod-shaped part (third rod-shaped part)
44 Front plate-shaped member (plate-shaped member)
50 Rear arm 51 Right rear rod-shaped part (first rod-shaped part)
52 Left rear rod-shaped part (second rod-shaped part)
53 Rear horizontal rod-shaped part (third rod-shaped part)
54 Rear plate-shaped member (plate-shaped member)
61 Front linking member 62 Rear linking member 79 Link part 80 Operation part 81 1st part 82 2nd part 82a Finger hook part A Assist device (luggage holding device)
AM Arm N Luggage Q1 Swing shaft core R1 First swing shaft core R2 Second swing shaft core

Claims (5)

A grip that can be gripped by the operator,
A base that supports the grip and
A plurality of arms supported by the base and capable of approaching and separating from each other.
A luggage holding device in which luggage is held between the plurality of arms by bringing the plurality of arms close to each other.
In addition to being interlocked with the plurality of arms, the plurality of arms are located below the grip portion when the plurality of arms are closest to each other, and the plurality of arms are operated upward to move the plurality of arms. Link parts that are separated from each other
An operation unit connected to the link unit is provided.
The operation unit is located below the link portion and has a first portion extending outward from the link portion to the outside of the device in a plan view, and a second portion extending upward from the outer end portion of the device of the first portion. Have and
A luggage holding device provided with a finger hook portion capable of hooking a worker's finger at the upper end portion of the second portion. The luggage holding device according to claim 1, wherein the finger hook portion is provided so as not to overlap the grip portion in a plan view. Each of the arms extends over a first rod-shaped portion extending in the vertical direction, a second rod-shaped portion extending in parallel with the first rod-shaped portion, a lower end portion of the first rod-shaped portion, and a lower end portion of the second rod-shaped portion. It has a third rod-shaped portion in a horizontal posture provided in the above, and a plate-shaped member fixed to the upper portion of the third rod-shaped portion and extending along the longitudinal direction of the third rod-shaped portion.
The luggage holding device according to claim 1 or 2, wherein the luggage is held between the plurality of plate-shaped members by bringing the plurality of arms close to each other. It is provided with a cord-like body that suspends the base.
The base portion has an attachment portion attached to the lower end portion of the cord-like body and a base portion main body that supports the grip portion.
The method according to any one of claims 1 to 3, wherein the lower end portion of the mounting portion is connected to the upper end portion of the base body in a state in which the lower end portion can swing relative to the swing shaft core along the front-rear direction. Luggage holding device. The plurality of arms are composed of a front arm located at the front portion of the device and a rear arm located rearward of the front arm, and can approach and separate from each other in the front-rear direction.
A long member that connects the front arm and the base, and a front linking member that is inclined forward and downward.
It is provided with a long member for connecting the rear arm and the base portion, and a rear linking member inclined downward downward.
The front end portion of the link portion is connected to the front portion of the front linking member in a state of being relatively swingable around the first swing shaft core along the left-right direction.
The rear end portion of the link portion is connected to the rear portion of the rear linking member in a state where it can swing relative to the second swing shaft core along the left-right direction.
When the front arm and the rear arm are closest to each other, in the side view, from the position of the first swing axis in the front-rear direction to the front-rear center position between the front arm and the rear arm. The front linking member and the link portion overlap with each other, and the position of the second swing axis in the front-rear direction extends to the front-rear center position between the front arm and the rear arm. The luggage holding device according to any one of claims 1 to 4, wherein the rear linking member and the link portion overlap.

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