JP2024075054A - Fall prevention aids - Google Patents

Abstract

To provide a fall prevention aid which is excellent in versatility and can easily prevent fall.SOLUTION: Fall prevention aids 10, 20 are fitted to a stanchion 2 erected on a load-carrying platform 1, and end hooks 3a, 5a of upper fall prevention ropes 3, 5 which are arranged on the load-carrying platform 1 extending in a horizontal direction, are engaged to upper hook engagement parts 12, 22 which extend in a direction crossing a longitudinal direction of aid main bodies 11, 21 from upper ends of the aid main bodies 11, 21, and end hooks 4a, 6a of lower fall prevention ropes 4, 6 which are arranged on the load-carrying platform 1 extending in the horizontal direction, are engaged to lower hook engagement parts 13, 23 which extend in the direction crossing the longitudinal direction of the aid main bodies 11, 21 from lower ends of the aid main bodies 11, 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a fall prevention aid that is removably attached to a stanchion erected on the loading platform of a vehicle and is used to prevent people from falling off the loading platform.

As a measure to prevent falls when working on the loading platform of a vehicle such as a trailer, ropes or nets for attaching safety belts are stretched between stanchions and their associated devices to prevent falls and absorb the impact if a fall occurs.
For example, the fall prevention device described in Patent Document 1 comprises a stanchion with a front pillar support member having a front pillar support member erected with at least a portion thereof fitted into a front receiving frame at a corner of the flat surface of the trailer bed, a stanchion with a rear pillar support member having a rear pillar support member erected with at least a portion thereof fitted into a rear receiving frame at a rear corner of the flat surface of the bed, a front pillar erected so as to be detachable from the front pillar support member, a rear pillar erected so as to be detachable from the rear pillar support member, and a wire stretched as a life rope between the front pillar and the rear pillar.

The fall prevention device described in Patent Document 2 includes a plurality of stanchions that are inserted into a plurality of insertion holes that are opened at the edge of the bed of a transport vehicle and that stand upward from the bed, a life rope that is horizontally suspended by being inserted through a plurality of rings provided on each of the stanchions, a tensioner that applies tension to the life rope, and a safety belt that is connected to a worker and is hooked onto the life rope. Each of the stanchions has an insertion portion that is inserted into the plurality of insertion holes, a horizontal portion that extends horizontally from the insertion portion toward the outside of the bed, and a pillar portion to which the plurality of rings are attached and that stands vertically from the horizontal portion.

The fall prevention device described in Patent Document 3 has a number of stanchions erected along the outer edge of the cargo bed of a cargo vehicle, a rope member stretched between two of the stanchions, and a connecting member slidably attached to the rope member and connected to an operator, with one end and the other end of the rope member fixed to the cargo vehicle and a pulley section equipped with a pulley for winding the rope member provided at the upper end of the stanchion.

The fall prevention device described in Patent Document 4 comprises a long main body having a cylindrical insertion portion connected by a hinge portion, a base that fits into a hole formed in the bed of a freight vehicle and accommodates the insertion portion slidably and rotatably, and a net that spans between the main body portions. At least the hinge portion and one end of the main body portion on the hinge portion side are accommodated in the base to erect the main body portion against the bed, and the insertion portion is slid within the base to expose the hinge portion and one end of the main body portion on the hinge portion side, allowing the main body portion to be folded against the bed.

The fall prevention device described in Patent Document 5 is equipped with a column-shaped portion that extends upward from at least two pillars, the lower ends of which are attached to the upper ends of the pillars erected on the side edges of the loading platform of a freight vehicle, and a net stretched between the column-shaped portions.

Utility Model Registration No. 3232384 JP 2022-83580 A JP 2014-39740 A JP 2012-71769 A Utility Model Registration No. 3146861

However, conventional fall prevention devices as described above have the problem that they require a dedicated stanchion or require the device to be installed on a stanchion, and are limited in the shapes of vehicles and stanchions, making them less versatile.
Furthermore, installing the fall prevention device takes time and effort, making it difficult to prevent falls easily.

The present invention was made in consideration of the above circumstances, and aims to provide a fall prevention aid that is versatile and can easily prevent falls.

In order to achieve the above object, the fall prevention aid of the present invention is a fall prevention aid that is detachably attached to a stanchion erected on the loading platform of a vehicle or the like and is used to prevent a person from falling from the loading platform,
An auxiliary tool main body that is detachably attached to the stanchion so as to extend in the vertical direction of the stanchion;
An upper hook engaging portion that extends from the upper end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body and has a tip end to which an end hook of an upper fall prevention rope that is arranged to extend horizontally on the loading platform is engaged;
The auxiliary device is characterized by having a lower hook engaging portion extending from the lower end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body, and at its tip, an end hook of a lower fall prevention rope arranged to extend horizontally on the loading platform is engaged.

Here, the term "vehicles and the like" refers to transport vehicles such as trucks and trailers, rail transport vehicles, and transport ships that are equipped with a loading platform.
Furthermore, when the loading platform is rectangular in plan view and stanchions are erected at the four corners of the loading platform, there is a driver's cab at the front of the loading platform, so there is no need to provide fall prevention ropes in the width direction of the loading platform at the front of the loading platform. Therefore, in a fall prevention aid attached to the two stanchions at the front of the loading platform, the upper and lower hook locking parts only need to extend to the rear side of the loading platform, and in a fall prevention aid at the rear of the loading platform, the upper and lower hook locking parts only need to extend in the width direction of the loading platform and to the front side of the loading platform, respectively.
In addition, when stanchions are installed at locations other than the four corners of the cargo bed, the upper hook engaging portion and the lower hook engaging portion of the fall prevention aid attached to the stanchion may extend in the fore-and-aft direction of the cargo bed or in the width direction of the cargo bed.

In the present invention, the auxiliary device main body is attached to a stanchion erected on the vehicle's loading platform, and the end hook of the upper fall prevention rope arranged to extend horizontally on the loading platform is engaged with the upper hook engaging portion extending from the upper end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body, and the end hook of the lower fall prevention rope arranged to extend horizontally on the loading platform is engaged with the lower hook engaging portion extending from the lower end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body.This makes it possible to easily install the upper fall prevention rope and the lower fall prevention rope on the loading platform regardless of the shape of the stanchion, etc.
Therefore, it is highly versatile and can easily prevent falls.

In addition, in the above-mentioned configuration of the present invention, an upper end of the auxiliary device main body may be provided with an upper hanging portion that can be hung on the upper end surface of the stanchion.

With this configuration, when attaching the auxiliary device main body to the stanchion, the upper hook portion is hooked onto the upper end surface of the stanchion, so the auxiliary device main body does not slip downward, and the auxiliary device main body can be positioned vertically on the stanchion and securely attached.

In the above-mentioned configuration of the present invention, the auxiliary tool main body is formed in a flexible band shape extending vertically and attached to the stanchion so as to cover more than half of the side surface of the stanchion in a cross section,
The upper hook engaging portion is formed in a substantially U-shape or a substantially V-shape, one end portion is attached to one side edge portion of the belt-shaped auxiliary tool main body, and the other end portion is attached to the other side edge portion of the auxiliary tool main body,
The lower hook engaging portion has two hook engaging members,
The base end of one of the hook locking members may be attached to one side edge of the auxiliary device main body, and the base end of the other of the hook locking members may be attached to the other side edge of the auxiliary device main body.

A fall prevention aid of this configuration is suitable for attachment to stanchions erected at a distance in the width direction of the trailer bed, for example, at the front side of the bed (the side where the driver's cab is located). In other words, since the driver's cab is located at the front side of the bed and there is no risk of falling, there is no need to provide a fall prevention rope in the width direction at the front side of the bed.
Therefore, the fall prevention aid of the above configuration has the aid main body attached to the stanchion at the front of the loading platform so as to cover more than half of the side of the stanchion in cross section, the upper hook locking portion extending toward the rear of the loading platform, and the end hook of the upper fall prevention rope arranged to extend horizontally from front to rear on the loading platform is locked to this upper hook locking portion, and the upper fall prevention rope is tightened to press the upper end of the aid main body against the stanchion. Also, the end hook of the lower fall prevention rope arranged to extend horizontally from front to rear on the loading platform is locked to the two hook locking members of the lower hook locking portion, and the lower fall prevention rope is tightened to press the lower end of the aid main body against the stanchion. The fall prevention aid described later is attached to the stanchion at the rear of the loading platform.
This makes it possible to easily install upper fall prevention ropes and lower fall prevention ropes in the fore-and-aft direction of the cargo bed.

In addition, fall prevention devices such as the following may be attached to the rear stanchions of the loading platform.
That is, in the above-mentioned configuration of the present invention, the auxiliary tool main body is formed in a flexible band shape extending vertically and attached to the stanchion so as to cover more than half of the side surface of the stanchion in a cross section,
The upper hook engaging portion includes a first upper engaging portion and a second upper engaging portion,
The first upper engaging portion is formed in a substantially U-shape or a substantially V-shape, one end portion is attached to one side edge portion of the belt-shaped auxiliary tool main body, and the other end portion is attached to the other side edge portion of the auxiliary tool main body,
The second upper locking portion includes two hook locking members,
One of the hook locking members has a base end attached to one side edge of the auxiliary tool main body and extends in a direction intersecting the longitudinal direction of the auxiliary tool main body through a surface side of the auxiliary tool main body,
The other hook locking member has a base end attached to one side edge of the auxiliary tool main body and extends through the back side of the auxiliary tool main body in a direction intersecting the longitudinal direction of the auxiliary tool main body,
The lower hook engaging portion includes a first lower engaging portion and a second lower engaging portion,
The first lower engaging portion includes two hook engaging members,
A base end portion of one of the hook locking members is attached to one side edge portion of the auxiliary device main body, and a base end portion of the other of the hook locking members is attached to the other side edge portion of the auxiliary device main body,
The second lower engaging portion may have a base end attached to a lower end of the assisting device main body.

A fall prevention aid of this configuration is suitable for attachment to stanchions spaced apart in the width direction of the bed, for example, at the rear side of the bed of a trailer (opposite the driver's cab).
That is, the fall prevention aid of the above configuration has the aid body attached to each of the two stanchions at the front of the loading platform so as to cover more than half of the side surface of the stanchion in cross section.
Next, the first upper engaging portion of the upper hook engaging portion is extended toward the front of the loading platform, and the end hook of the upper fall prevention rope, which is arranged extending horizontally from front to back on the loading platform, is engaged with this first upper engaging portion, and the upper fall prevention rope is tightened to press the upper end of the auxiliary device main body against the stanchion.
In addition, the two hook engaging members of the second upper engaging portion are extended in the width direction of the cargo bed, and the end hooks of the upper fall prevention rope, which is arranged at the rear of the cargo bed and extends horizontally in the width direction of the cargo bed, are engaged with the two hook engaging portions, and the upper fall prevention rope is tightened to press the upper end of the auxiliary device main body against the stanchion.

In addition, the two hook locking members of the first lower locking portion of the lower hook locking portion are extended to the front side of the cargo bed, and the end hooks of the lower fall prevention rope arranged to extend horizontally in front and behind the cargo bed are engaged, and the lower-upper fall prevention rope is tightened, thereby pressing the lower end of the auxiliary device main body against the stanchion.
In addition, the second lower engaging portion of the lower hook engaging portion is extended in the width direction of the cargo bed, and the end hook of the lower fall prevention rope, which is arranged at the rear of the cargo bed and extends horizontally in the width direction of the cargo bed, is engaged with this second lower engaging portion, and the lower end of the auxiliary device main body is pressed against the stanchion by tightening the lower fall prevention rope.
This makes it possible to easily install the upper fall prevention rope and the lower fall prevention rope in the width direction of the loading platform at the rear side of the loading platform.

According to the present invention, regardless of the shape of the stanchion, it is possible to easily install upper fall prevention ropes and lower fall prevention ropes on the loading platform, making it highly versatile and easy to prevent falls.

FIG. 1 is a schematic perspective view of a first example of a fall prevention aid according to an embodiment of the present invention. FIG. FIG. 2 is a front view of the fall prevention aid of the first example in an open state. FIG. 11 is a schematic perspective view of a second example of the fall prevention aid according to the first embodiment. FIG. 11 is a front view of the second example of the fall prevention aid in an open state. FIG. 7 is a view taken along the line AA in FIG. 6. 7 is a view taken along the line BB in FIG. 6.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of a first example of a fall prevention aid according to this embodiment, FIG. 2 is a cross-sectional view of the aid main body, and FIG. 3 is a front view of the first example of the fall prevention aid in an open state.
FIG. 4 is a schematic perspective view of a fall prevention aid according to a second example of this embodiment, and FIG. 5 is a front view of the fall prevention aid according to the second example in an open state.
6 is a side view of a loading platform of a vehicle or the like, FIG. 7 is a view taken along the line AA in FIG. 6, and FIG. 8 is a view taken along the line BB in FIG.

The fall prevention aids 10, 20 are removably attached to stanchions 2 erected on the loading platform 1 of a vehicle or the like as shown in Figures 6 to 8, and are used to prevent a fall from the loading platform 1.
The stanchions 2 to which the fall prevention aid 10 of the first example is attached are provided at the front side of the loading platform 1 (on the right side in Figs. 6 to 8) and are spaced apart in the width direction of the loading platform 1, and each stanchion 2 is attached with a fall prevention aid 10. Note that, since there is a driver's cab (not shown) in front of the loading platform 1, there is no need for a fall prevention rope extending in the width direction of the loading platform 1 at the front side of the loading platform 1.

As shown in Figures 1 to 3, the fall prevention aid 10 of the first example is formed from flexible synthetic fiber cloth or other cloth, and comprises an aid body 11, an upper hook engaging portion 12, and a lower hook engaging portion 13.
The auxiliary tool main body 11 is detachably attached to the stanchion 2 so as to extend in the vertical direction (longitudinal direction) of the stanchion 2, and is formed in a vertically extending band shape. The auxiliary tool main body 11 also includes a back plate portion 11a extending in the vertical direction, and side plate portions 11b, 11b formed integrally with the back plate portion 11a and bendable at approximately right angles to the back plate portion 11a on the side edges along the vertical direction of the back plate portion 11a, and is formed in an approximately U-shape in cross section when attached to the stanchion 2.
In addition, before the fall prevention aid 10 is attached to the stanchion 2, the lower side of the aid body 11 is in an open state, making it easy to attach to the stanchion 2.

As shown in FIG. 2, the auxiliary device main body 11 is attached to the stanchion 2 so as to cover more than half of the side of the stanchion 2 in cross section, specifically approximately 3/4 of it. In this embodiment, the stanchion 2 is formed in a rectangular cross section and has four side surfaces. Therefore, the auxiliary device main body 11 is attached to the stanchion 2 so as to cover three of the four side surfaces. When the auxiliary device main body 11 is attached to the stanchion 2, the back plate portion 11a covers one side of the stanchion 2 (the side facing the front of the loading platform 1), and the side plate portions 11b, 11b each cover the opposing side surfaces of the stanchion 2.

In addition, if the stanchion has a circular or polygonal cross section, the auxiliary device main body 11 may be attached so as to cover more than half of the side surface of the stanchion in cross section.
1 and 3, a rectangular plate-shaped magnet 11c is attached to the upper part of the back plate portion 11a of the auxiliary tool main body 11. The magnet 11c fixes the back plate portion 11a to one side surface of the stanchion 2 by magnetic force when the auxiliary tool main body 11 is attached to the stanchion 2.

1, the upper hook engaging portion 12 extends from the upper end of the assisting device main body 11 in a direction intersecting the longitudinal direction of the assisting device main body 11, and is formed in a substantially U-shape or a substantially V-shape. Moreover, the upper hook engaging portion 12 is attached to the upper end of the assisting device main body 11 by having one end attached to one side edge of the assisting device main body 11 and the other end attached to the other side edge of the assisting device main body 11.
As shown in Figs. 6 and 7, an end hook 3a of an upper fall prevention rope 3 that is arranged on the cargo bed 1 and extends horizontally and in the front-rear direction is engaged with the upper hook engaging portion 12.

1 and 3, the lower hook locking portion 13 has two hook locking members 13a, 13a. A locking hole 13b is provided at the tip of the hook locking member 13a to which an end hook 4a of a lower fall prevention rope 4, which will be described later, is locked. The base end of one hook locking member 13a is attached to one side edge of the lower end of the assisting device main body 11, and the base end of the other hook locking member 13a is attached to the other side edge of the lower end of the assisting device main body 11.
6 and 8, the end hook 4a of the lower fall prevention rope 4 arranged to extend horizontally and in the front-rear direction on the platform 1 is engaged with the lower hook engaging portion 13. That is, the tip ends of the two hook engaging members 13a, 13a are overlapped with each other so that the engaging holes 13b, 13b communicate with each other, and the end hook 4a is engaged with the engaging holes 13b, 13b.

Further, an upper end of the auxiliary tool main body 11 is provided with an upper hanging portion 14 that is hung on the upper end surface of the stanchion 2. The upper hanging portion 14 is formed in a band shape, and one end of the upper hanging portion 14 is attached to the upper end of one of the side plate portions 11b of the auxiliary tool main body 11, and the other end of the upper hanging portion 14 is attached to the upper end of the other side plate portion 11b.
As shown in Figure 7, when the fall prevention aid 10 is attached to the stanchion 2, the upper hanging portion 14 is hung from both opposing side sides of the stanchion 2 to the upper end surface, thereby preventing the fall prevention aid 10 from slipping downward.

As shown in Figures 6 to 8, a fall prevention aid 20 of the second example is attached to two stanchions 2, 2 that are erected at a distance from each other in the width direction of the loading platform 1 at the rear side of the loading platform 1 (the left side in Figures 6 to 8). As shown in Figures 7 and 8, the fall prevention aid 20 is attached to the stanchion 2 on one side (the left side when the loading platform 1 is viewed from the rear) of the two stanchions 2, 2 that are erected at a distance from each other on the left and right sides at the rear side of the loading platform 1.

The fall prevention aid 20 attached to the stanchion 2 on the other side (the right side when the loading platform 1 is viewed from the rear) is the opposite in the attachment location and extension direction of the base ends of the second upper engaging portion 32 and the second lower engaging portion 42 described later compared to the fall prevention aid 20 shown in FIG. 4, that is, it is symmetrical with respect to the center line (the center line that divides the width in half) of the aid main body 21 described later. Since the basic configuration is the same, the following describes the fall prevention aid 20 attached to the stanchion 2 on one side, and the description of the fall prevention aid (sometimes called a symmetrical fall prevention aid) 20 attached to the stanchion 2 on the other side will be omitted.

As shown in FIG. 4, the fall prevention aid 20 of the second example is made of flexible synthetic fiber cloth or other cloth, similar to the first fall prevention aid 10, and includes an aid body 21, an upper hook engaging portion 22, and a lower hook engaging portion 23.

The auxiliary tool main body 21 is detachably attached to the stanchion 2 so as to extend in the vertical direction (longitudinal direction) of the stanchion 2, and is formed in a vertically extending band shape. The auxiliary tool main body 21 also includes a back plate portion 21a extending in the vertical direction, and side plate portions 21b, 21b formed integrally with the back plate portion 21a and bendable at approximately right angles to the back plate portion 21a on the side edges along the vertical direction of the back plate portion 21a, and is formed in an approximately U-shape in cross section when attached to the stanchion 2.
In addition, before the fall prevention aid 20 is attached to the stanchion 2, the lower side of the aid body 21 is in an open state, making it easy to attach to the stanchion 2.

As shown in FIG. 2, the auxiliary device main body 21 is attached to the stanchion 2 so as to cover more than half of the side surface of the stanchion 2 in cross section, specifically approximately 3/4 of the side surface. As described above, in this embodiment, the stanchion 2 is formed in a rectangular cross section and has four side surfaces. Therefore, the auxiliary device main body 21 is attached to the stanchion 2 so as to cover three of the four side surfaces. When the auxiliary device main body 21 is attached to the stanchion 2, the back plate portion 21a covers one side surface of the stanchion 2 (the side surface facing the rear of the loading platform 1), and the side plate portions 21b, 21b each cover the opposing side surfaces of the stanchion 2.

In addition, if the stanchion has a circular or polygonal cross section, the auxiliary device main body 21 may be attached so as to cover more than half of the side surface of the stanchion in cross section.
Furthermore, a rectangular plate-shaped magnet 21c is attached to the upper part of the back plate portion 21a of the auxiliary tool main body 21. The magnet 21c fixes the back plate portion 21a to one side surface of the stanchion 2 by magnetic force when the auxiliary tool main body 21 is attached to the stanchion 2.

As shown in Figures 4 and 5, the upper hook engaging portion 22 includes a first upper engaging portion 31 and a second upper engaging portion 32. The first upper engaging portion 31 and the second upper engaging portion 32 extend in directions that are substantially perpendicular to each other in a plan view when the auxiliary device main body 21 is attached to the stanchion 2. The first upper engaging portion 31 extends toward the front side of the loading platform 1, and the second upper engaging member 32 extends in the width direction of the loading platform 1.

The first upper engaging portion 31 extends from the upper end of the assisting device main body 21 in a direction intersecting the longitudinal direction of the assisting device main body 21, and is formed in a substantially U-shape or a substantially V-shape. The first upper engaging portion 31 is attached to the upper end of the assisting device main body 21 by having one end attached to one side edge of the assisting device main body 21 and the other end attached to the other side edge of the assisting device main body 21.
As shown in Figures 6 and 7, an end hook 3a of an upper fall prevention rope 3 that is arranged to extend horizontally and in the front-rear direction on the cargo bed 1 is engaged with the first upper engaging portion 31.

The second upper engaging portion 32 includes two hook engaging members 32a, 32a. The hook engaging member 32a has a distal end provided with an engaging hole 32b for engaging the end hook 5a of the upper fall prevention rope 5.
One of the hook locking members 32a has its base end attached to one side edge of the auxiliary device main body 21 and extends in a direction intersecting the longitudinal direction of the auxiliary device main body 21, passing through the surface side of the auxiliary device main body 21 (the right side in Figure 4).
The other hook engaging portion 32a has its base end attached to one side edge of the auxiliary device main body 21 and extends in a direction intersecting the longitudinal direction of the auxiliary device main body 21 through the back side of the auxiliary device main body 21 (left side in Figure 4).

7, an end hook 5a of an upper fall prevention rope 5 arranged to extend horizontally and widthwise of the loading platform 1 is engaged with the second upper engaging portion 32. That is, the tips of the two hook engaging members 32a, 32a are overlapped with each other so that the engaging holes 32b, 32b communicate with each other, and the end hook 5a is engaged with the engaging holes 32b, 32b.
In addition, a fall prevention aid 20 is attached to each of the two stanchions 2, 2 on the rear side of the cargo bed 1, so that one end hook 5a of the upper fall prevention rope 5 is engaged with the second upper engaging portion 32 of one of the fall prevention aids 20, and the other end hook 5a is engaged with the second upper engaging portion 32 of the other fall prevention aid 20.
Moreover, one of the fall prevention aids 20 has a configuration as shown in FIG. 4, while the other fall prevention aid 20 is a symmetrical fall prevention aid 20 as described above.

As shown in Figures 4 and 5, the lower hook engaging portion 23 includes a first lower engaging portion 41 and a second lower engaging portion 42. The first lower engaging portion 41 and the second lower engaging portion 42 extend in directions that are substantially perpendicular to each other in a plan view when the auxiliary device main body 21 is attached to the stanchion 2. The first lower engaging portion 41 extends toward the front side of the loading platform 1, and the second lower engaging member 42 extends in the width direction of the loading platform 1.

The first lower locking portion 41 has two hook locking members 41a, 41a, the base end of one hook locking member 41a is attached to one side edge of the aid body 21, and the base end of the other hook locking member 41a is attached to the other side edge of the aid body 21. The hook locking members 41a, 41a extend in a direction intersecting the longitudinal direction of the aid body 21, and a locking hole 41b is provided at the tip of each hook locking member 41a.

As shown in Figures 6 and 8, the end hook 4a of the lower fall prevention rope 4, which is arranged to extend horizontally and in the front-to-rear direction of the loading platform 1, is engaged with the first lower engaging portion 41. That is, the tips of the two hook engaging members 41a, 41a are overlapped with each other so that the engaging holes 41b, 41b are connected, and the end hook 4a is engaged with the engaging holes 41b, 41b.

The second lower engaging portion 42 has a base end attached to the lower end of the assisting device main body 21 and extends in a direction intersecting the longitudinal direction of the assisting device main body 21. A locking hole 42b is provided at the tip of this second lower engaging portion 42.

As shown in FIG. 8, an end hook 6a of a lower fall prevention rope 6 arranged to extend horizontally on the loading platform 1 and in the width direction of the loading platform 1 is engaged with the second lower engaging portion 42.
In addition, a fall prevention aid 20 is attached to each of the two stanchions 2, 2 at the rear of the cargo bed 1, so that one end hook 6a of the lower fall prevention rope 6 is engaged with the second lower engaging portion 42 of one of the fall prevention aids 20, and the other end hook 6a is engaged with the second lower engaging portion 42 of the other fall prevention aid 20.

4 and 5, an upper end of the auxiliary tool main body 21 is provided with an upper hanging portion 24 that is hung on the upper end surface of the stanchion 2. The upper hanging portion 24 is formed in a band shape, and one end of the upper hanging portion 24 is attached to the upper end of one of the side plate portions 21b of the auxiliary tool main body 21, and the other end of the upper hanging portion 24 is attached to the upper end of the other side plate portion 21b.
As shown in Figure 7, when the fall prevention aid 20 is attached to the stanchion 2, the upper hanging portion 24 is hung from both opposing side surfaces of the stanchion 2 to the upper end surface, thereby preventing the fall prevention aid 20 from slipping downward.

The above-mentioned fall prevention aids 10, 20 are attached to the stanchion 2 as follows.
That is, first, the fall prevention aid 10 is attached to each of the two stanchions 2, 2 erected on the front side of the cargo bed 1, as shown in Figs.
In this case, the aid body 11 of the fall prevention aid 10 is attached to the stanchion 2 at the front of the loading platform 1 so as to cover approximately 3/4 of the side surface of the stanchion 2 in cross section. At this time, the aid body 11 is bent into a U-shape in cross section with its open part facing the rear of the loading platform 1 and the upper hook part 14 is hooked onto the upper end surface of the stanchion 2, thereby preventing the fall prevention aid 10 from slipping downward. In addition, the magnet 11c provided on the aid body 11 is fixed to the stanchion 2 by magnetic force, thereby also preventing the fall prevention aid 10 from slipping downward.

Next, the upper hook retaining portion 12 is extended toward the rear of the loading platform 1, and the front end hook 3a of the upper fall prevention rope 3 arranged to extend horizontally from front to rear on the loading platform 1 is retained in the upper hook retaining portion 12. In addition, the two hook retaining members 13a, 13a of the lower hook retaining portion 13 are extended toward the rear of the loading platform 1, and the front end hook 4a of the lower fall prevention rope 4 arranged to extend horizontally from front to rear on the loading platform 1 is retained in the retaining holes 13b, 13b of the hook retaining members 13a, 13a.

6 to 8, the fall prevention aids 20 are attached to two stanchions 2, 2 erected on the rear side of the cargo bed 1. A fall prevention aid 20 as shown in Fig. 4 is attached to one of the stanchions 2, and a symmetrical fall prevention aid 20 is attached to the other stanchion 2.
In this case, the aid body 21 of the fall prevention aid 20 is attached to the stanchion 2 at the rear of the loading platform 1 so as to cover approximately 3/4 of the side surface of the stanchion 2 in cross section. At this time, the aid body 21 is bent into a U-shape in cross section with its open part facing the front side of the loading platform 1 and the upper hook part 24 is hooked onto the upper end surface of the stanchion 2, thereby preventing the fall prevention aid 20 from slipping downward. In addition, the magnet 21c provided on the aid body 21 is fixed to the stanchion 2 by magnetic force, thereby preventing the fall prevention aid 20 from slipping downward.

Next, the first upper engaging portion 31 of the upper hook engaging portion 22 is extended toward the front of the loading platform 1, and the rear end hook 3a of the upper fall prevention rope 3, which is arranged to extend horizontally from front to rear on the loading platform, is engaged with this first upper engaging portion 31. Since the front end hook 3a of the upper fall prevention rope 3 is engaged with the upper hook engaging portion 12 of the fall prevention aid 10, by tightening the upper fall prevention rope 3, the upper end of the aid body 21 is pressed against the stanchion 2 and the upper end of the aid body 11 of the fall prevention aid 10 is pressed against the front stanchion 2.
In addition, the two hook engaging members 32a, 32a of the second upper engaging portion 32 are extended in the width direction of the loading platform 1, and the end hooks 5a of the upper fall prevention rope 5, which is arranged extending horizontally in the width direction of the loading platform 1 at the rear side of the loading platform 1, are engaged with the two hook engaging portions 32a, 32a, and the upper fall prevention rope 5 is tightened to press the upper end of the auxiliary device main body 21 against the stanchion 2.

In addition, of the two stanchions 2, 2 at the rear of the cargo bed 1, a fall prevention aid 20 as shown in Figure 4 is attached to one stanchion 2, and a symmetrical fall prevention aid 20 is attached to the other stanchion 2, so that one end hook 5a of the upper fall prevention rope 5 is engaged with the second upper engaging portion 32 of the fall prevention aid 20, and the other end hook 5a is engaged with the second upper engaging portion 32 of the symmetrical fall prevention aid 20.
In addition, a tightening belt (not shown) is interposed between the upper fall prevention ropes 3, 5 and the end hooks 3a, 5a, and the upper fall prevention ropes 3, 5 are tightened by tightening this tightening belt.

The two hook locking members 41a, 41a of the first lower locking portion 41 of the lower hook locking portion 23 are extended to the front side of the loading platform 1 to lock the rear end hook 4a of the lower fall prevention rope 4, which is arranged to extend horizontally from the front to the rear of the loading platform 1. The front end hook 4a of the lower fall prevention rope 4 is locked to the lower hook locking portion 13 of the fall prevention aid 10, so that by tightening the lower fall prevention rope 4, the lower end of the aid body 21 is pressed against the stanchion 2 and the lower end of the aid body 11 of the fall prevention aid 10 is pressed against the front stanchion 2.

In addition, the second lower engaging portion 42 of the lower hook engaging portion 23 is extended in the width direction of the loading platform 1, and the end hook 6a of the lower fall prevention rope 6, which is arranged at the rear of the loading platform and extends horizontally in the width direction of the loading platform, is engaged with this second lower engaging portion 42, and by tightening the lower fall prevention rope 6, the lower end portion of the auxiliary device main body 21 is pressed against the stanchion 2.
This makes it possible to easily install the upper fall prevention rope 5 and the lower fall prevention rope 6 in the width direction of the loading platform 1 at the rear side of the loading platform 1.

In addition, of the two stanchions 2, 2 at the rear of the cargo bed 1, a fall prevention aid 20 as shown in Figure 4 is attached to one stanchion 2, and a symmetrical fall prevention aid 20 is attached to the other stanchion 2, so that one end hook 6a of the lower fall prevention rope 6 is engaged with the second lower engaging portion 42 of the fall prevention aid 20, and the other end hook 6a is engaged with the second upper engaging portion 42 of the symmetrical fall prevention aid 20.
In addition, tightening belts (not shown) are interposed between the lower fall prevention ropes 4, 6 and the end hooks 4a, 6a, and the upper fall prevention ropes 4, 6 are tightened by tightening these tightening belts.

As described above, according to this embodiment, the fall prevention aids 10, 20 are attached to the stanchions 2 erected on the vehicle's loading platform 1, and the end hooks 3a, 5a of the upper fall prevention ropes 3, 5 arranged to extend horizontally on the loading platform 1 are engaged with the upper hook engaging parts 12, 22 extending from the upper end of the aid main body 11, 21 in a direction intersecting the longitudinal direction of the aid main body 11, 21, and the end hooks 4a, 6a of the lower fall prevention ropes 4, 6 arranged to extend horizontally on the loading platform 1 are engaged with the lower hook engaging parts 13, 23 extending from the lower end of the aid main body 11, 21 in a direction intersecting the longitudinal direction of the aid main body 11, 21. This makes it possible to easily install the upper fall prevention ropes 3, 5 and the lower fall prevention ropes 4, 6 on the loading platform 1 regardless of the shape of the stanchions 2. Therefore, it is highly versatile and can easily prevent falls.

In addition, the upper end of the auxiliary device main body 11, 21 is provided with an upper hook portion 14, 24 that can be hooked onto the upper end surface of the stanchion 2. When attaching the auxiliary device main body 11, 21 to the stanchion 2, the upper hook portion 14, 24 is hooked onto the upper end surface of the stanchion 2, so that the auxiliary device main body 11, 21 does not slip downward. Therefore, the auxiliary device main body 11, 21 can be securely attached to the stanchion 2 by positioning it vertically.

In addition, the device is equipped with a first example of a fall prevention aid 10 that is attached to a stanchion 2 erected on the front side of the loading platform 1, and a second example of a fall prevention aid 20 that is attached to a stanchion 2 erected on the rear side, so that the upper fall prevention ropes 3, 5 and the lower fall prevention ropes 4, 6 can be easily installed in the front-to-rear direction of the loading platform 1 and in the width direction of the loading platform 1 at the rear side of the loading platform 1.

In this embodiment, the upper fall prevention ropes 3, 5 and the lower fall prevention ropes 4, 6 are arranged to surround the opposing sides and rear of the cargo bed 1, which is rectangular in plan view. However, if the upper fall prevention ropes 3, 5 and the lower fall prevention ropes 4, 6 are arranged to surround the opposing sides, front and rear of the cargo bed 1, fall prevention aids 20 can be attached to the front stanchions 2, 2 instead of fall prevention aids 10.

REFERENCE SIGNS LIST 1 Cargo platform 2 Stanchion 3, 5 Upper fall prevention rope 3a, 5a End hook 4, 6 Lower fall prevention rope 4a, 6a End hook 10, 20 Fall prevention aid 11, 21 Auxiliary device main body 12, 22 Upper hook engaging portion 13, 23 Lower hook engaging portion 13a Hook engaging member 14, 24 Upper hanging portion 22 First upper engaging portion 32 Second upper engaging portion 32a Hook engaging member 41 First lower engaging portion 41a Hook engaging member 42 Second lower engaging portion

Claims (4)

A fall prevention aid that is detachably attached to a stanchion erected on the loading platform of a vehicle or the like and is used to prevent a person from falling off the loading platform,
An auxiliary tool main body that is detachably attached to the stanchion so as to extend in the vertical direction of the stanchion;
An upper hook engaging portion that extends from the upper end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body and has a tip end to which an end hook of an upper fall prevention rope that is arranged to extend horizontally on the loading platform is engaged;
A lower hook engaging portion that extends from the lower end of the auxiliary device main body in a direction intersecting the longitudinal direction of the auxiliary device main body and has a tip end to which an end hook of a lower fall prevention rope that is arranged to extend horizontally on the loading platform is engaged;
A fall prevention aid comprising: The fall prevention aid described in claim 1, characterized in that an upper hook portion that is hooked onto the upper end surface of the stanchion is provided at the upper end of the aid body. The auxiliary tool body is formed in a flexible, vertically extending band shape attached to the stanchion so as to cover more than half of the side surface of the stanchion in a cross section,
The upper hook engaging portion is formed in a substantially U-shape or a substantially V-shape, one end portion is attached to one side edge portion of the belt-shaped auxiliary tool main body, and the other end portion is attached to the other side edge portion of the auxiliary tool main body,
The lower hook engaging portion has two hook engaging members,
A fall prevention aid as described in claim 1 or 2, characterized in that a base end of one of the hook locking members is attached to one side edge of the aid body, and a base end of the other of the hook locking members is attached to the other side edge of the aid body. The auxiliary tool body is formed in a flexible, vertically extending band shape attached to the stanchion so as to cover more than half of the side surface of the stanchion in a cross section,
The upper hook engaging portion includes a first upper engaging portion and a second upper engaging portion,
The first upper engaging portion is formed in a substantially U-shape or a substantially V-shape, one end portion is attached to one side edge portion of the belt-shaped auxiliary tool main body, and the other end portion is attached to the other side edge portion of the auxiliary tool main body,
The second upper locking portion includes two hook locking members,
One of the hook locking members has a base end attached to one side edge of the auxiliary tool main body and extends in a direction intersecting the longitudinal direction of the auxiliary tool main body through a surface side of the auxiliary tool main body,
The other hook locking member has a base end attached to one side edge of the auxiliary tool main body and extends in a direction intersecting the longitudinal direction of the auxiliary tool main body through the back side of the auxiliary tool main body,
The lower hook engaging portion includes a first lower engaging portion and a second lower engaging portion,
The first lower engaging portion includes two hook engaging members,
A base end portion of one of the hook locking members is attached to one side edge portion of the auxiliary device main body, and a base end portion of the other of the hook locking members is attached to the other side edge portion of the auxiliary device main body,
3. The fall prevention aid according to claim 1 or 2, wherein the second lower engaging portion has a base end attached to a lower end of the aid body.

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