JP7575767B2 - Joint structure of cargo securing belt - Google Patents

Description

The present invention relates to a joint structure for a cargo securing belt in which cargo securing belts made of resin fibers woven into a flat strip are overlapped and integrally joined together .

Belts have traditionally been used as a tool to tie down luggage when transporting or storing it. For example, the following Patent Document 1 discloses a belt member for securing cargo, in which a buckle is connected to one end of a flat, band-like belt. In this case, the belt member is formed into a ring shape by folding back one end of the belt and sewing it, and a buckle is connected through this ring part.

JP 2002-104494 A

However, in the belt member described in Patent Document 1, the annular portion that connects the buckle is formed by sewing, which poses the problem that the sewing process is complicated and time-consuming.

The present invention has been made to address the above-mentioned problems, and its object is to provide a joining structure for a cargo securing belt that can easily and quickly join together multiple belts made of resin fibers woven into a flat strip shape.

In order to achieve the above-mentioned object, the feature of the present invention is a joining structure for a cargo securing belt in which cargo securing belts made of resin fibers woven into flat strips are overlapped on each other and joined together, the overlapping cargo securing belts have a through hole that passes between them , and before the cargo securing belt is used to secure a cargo, the inner periphery of the through hole melts to form a fused portion where the overlapping cargo securing belts solidify without blocking the through hole, and the opening at both ends, which is the opening where the cargo securing belt is applied to the cargo , has a protruding portion where part of the molten material protrudes outward and solidifies.

According to the features of the present invention configured in this way, the joint structure of the load-tie belt has a plurality of through holes penetrating the plurality of overlapping belts, and the inner periphery of the through holes is melted to form a fused portion where the plurality of belts are solidified, so that the overlapping belts can be easily and quickly joined together by partially melting them. In this case, the through holes can be formed in at least two overlapping belts by using an iron or laser light that heats the needle-shaped or rod-shaped parts to melt the belts.

Furthermore, according to the features of the present invention configured in this manner, the joining structure of the cargo securing belt has a protrusion formed by part of the molten material protruding outward and solidifying at the opening at either end of the through hole on the side where the cargo securing belt is applied to the cargo , thereby improving the frictional resistance between the belt and the article when the belt is used to secure the article, and making it less likely for the belt to shift out of position.

Another feature of the present invention is that a plurality of through holes are formed in the joining structure of the cargo securing belt.

According to another feature of the present invention, the joint structure of the load-tightening belt has a plurality of through holes, so that the load-tightening belt can be joined with less reduction in strength compared to a case where a single through hole is formed for the same through holes. Also, according to this joint structure of the load-tightening belt, the through holes can be formed intensively in the parts of the load-tightening belts that are easily peeled off, and the joint strength can be improved.

Another feature of the present invention is that in the joining structure of the load securing belt, the through hole has a diameter of 2 mm or less.

According to another feature of the present invention configured in this manner, the joining structure of the cargo securing belt is formed so that the diameter of the through hole is 2 mm or less, thereby making the through hole less noticeable and preventing objects present around the cargo securing belt from entering and becoming caught in the through hole.

Another feature of the present invention is that in the joining structure of the cargo securing belt, the fused portions are formed by connecting the fused portions in the adjacent through holes.

According to another feature of the present invention configured in this manner, the joining structure of the cargo securing belt is such that the fused portions at adjacent through holes are connected and integrated with each other, thereby improving the joining strength between the cargo securing belts.

Another feature of the present invention is that in the joining structure of the cargo securing belt, the cargo securing belt is formed in a light color.

According to another feature of the present invention, the joining structure of the load-tightening belt is formed in a light color, so that the through holes can be formed with high accuracy in a short time by the laser light. In this case, the light color includes not only white-based colors such as white and gray, but also transparent and semi-transparent colors.

1 is a perspective view showing an outline of the external configuration of a main part of a belt having a joining structure for a belt according to an embodiment of the present invention; 2 is a partial cross-sectional view showing a schematic internal configuration of a joint portion and a through hole in the belt shown in FIG. 1 . 2 is a partial cross-sectional view showing a schematic diagram of a state in which a through hole is formed by irradiating a portion of the belt shown in FIG. 1 that will become a joint with a laser beam. FIG.

One embodiment of the belt joint structure according to the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view showing a schematic external configuration of the main part of a belt 100 equipped with the belt joint structure according to the present invention. This belt 100 is used to hold or tie down luggage (not shown) when transporting or storing the luggage.

(Configuration of Belt 100)
The belt 100 is a long component that is hung on luggage, and is formed in the shape of a wide, flat belt. More specifically, the belt 100 is formed by weaving resin fibers such as polypropylene, polyester, or nylon into a wide band shape with excellent tensile strength. In this case, the belt 100 is made of a white fabric. The length of the belt 100 is appropriately set depending on the application. A connecting part 101 is formed at the tip of the belt 100.

The connecting portion 101 is a portion for connecting the hook F, and is formed into a ring shape by folding back the tip of the belt 100 and joining it to the belt 100 itself. Here, the hook F is a part for hooking the belt 100 onto a loading pallet (not shown), and is formed by bending a metal plate into an approximately J-shape. In this connecting portion 101, a joining portion 102 is formed at the portion where the tip of the belt 100 is folded and joined to the belt 100 itself. Note that in FIG. 1, the hook F is indicated by a two-dot chain line.

The joint portion 102 is a portion where the tip of the belt 100, which has been folded to form the connecting portion 101 into a ring shape, is joined to the belt 100 itself, and is configured by forming multiple through holes 103 between the two overlapping belts 100.

As shown in FIG. 2, the through hole 103 is a hole that penetrates between the fabrics of the two overlapping belts 100. A fused portion 104 is formed on the surface of the inner circumferential surface of this through hole 103. The fused portion 104 is a portion in which the fabrics of the overlapping belts 100 are melted by heating and then cooled to solidify the fabrics of the two belts 100 into one piece. In this embodiment, the through hole 103 is formed with a diameter of approximately 1 mm. The fused portion 104 is formed in a cylindrical shape over the entire inner circumferential surface of the through hole 103.

In this case, the fused portion 104 is formed with a thickness such that the fused portions 104 of adjacent through holes 103 are separated and not connected to each other. This ensures flexibility of the joint 102 and makes it easier to bend. Note that the fused portion 104 is formed such that the fused portions 104 of adjacent through holes 103 are connected to each other, thereby improving the joining strength. Note that in FIG. 2, the fused portion 104 is shown with light gray hatching.

The through hole 103 has a recess 105 formed at the opening on one end side, and a protruding portion 106 formed at the opening on the other end side. The recess 105 is a portion for making the surface of the joint 102 a smooth surface, and is composed of a conical inclined surface that slopes from the outside toward the inside of the opening of the through hole 103. In this embodiment, this recess 105 is formed on the side of the belt 100 opposite the side facing the baggage to be secured.

The protruding portion 106 is a portion for increasing the surface roughness of the joint portion 102, and at least a portion of the outer edge of the opening of the through hole 103 is formed to protrude outward beyond the surrounding portion of the opening. In this embodiment, the protruding portion 106 is formed to protrude in an annular shape from the surface of the belt 100 facing the baggage to be secured. The protruding amount of the protruding portion 106 is preferably about 0.3 mm to 2 mm.

(Manufacture of joint 102)
Next, a method for manufacturing the joint portion 102 of the belt 100 thus configured will be described. First, an operator prepares the belt 100 extending in a straight line to which the hook F is not attached, and the hook F. Next, the operator passes the tip of the belt 100 through the oblong attachment hole of the hook F, and then folds back the tip to overlap the belt 100 itself.

Next, the worker joins the overlapping portions of the belt 100. Specifically, as shown in FIG. 3, the worker prepares a laser welding device (not shown) that irradiates linear laser light L (e.g., a carbon dioxide laser) that can melt the resin material that constitutes the belt 100, and places the portion of the belt 100 that will become the joint 102 in relation to a laser irradiation head H provided in the laser melting device, and irradiates the laser light L.

In this case, the worker sets the strength, time, and irradiation position of the laser beam L on the laser welding device. Here, the strength, time, and irradiation position of the laser beam L refer to the strength, time, and irradiation position of the laser beam L that melts the two overlapping belts 100 at the portion that will become the joint 102 of the belt 100 to form the through hole 103. In FIG. 3, the laser beam L is indicated by dark gray hatching, and the fusion portion 104 is indicated by light gray hatching. Also in FIG. 3, the dashed arrow indicates the direction in which the laser irradiation head H moves, repeatedly irradiating and interrupting the laser beam L for each position where the through hole 103 is to be formed.

As a result, through holes 103 are formed in the belt 100 at designated positions for the two overlapping belts 100 that form the joint 102. In this embodiment, the through holes 103 are formed in a square shape of seven by seven in the portion of the belt 100 that forms the joint 102. In this case, the two overlapping belts 100 that form the joint 102 are melted by the laser light L to form the through holes 103, and then resolidified by stopping the irradiation of the laser light to form a fused portion 104 that integrally connects the two overlapping belts 100.

In this case, the through holes 103 have recesses 105 at the openings on both ends where the laser light L is irradiated, and protrusions 106 at the openings on the side where the laser light L penetrates. As a result, the belt 100 has joints 102 where two belts 100 are glued together by a set of a plurality of through holes 103 arranged in a square shape, and a connecting portion 101 formed in a ring shape by the joints 102. The belt 100 has joints 102 and connecting portions 101 at both ends, and a hook F is provided.

(Operation of Belt 100)
Next, the operation of the belt 100 configured as above will be described. The belt 100 holds or binds a load (not shown) when the load is transported or stored. In this case, the hooks F attached to both ends of the belt 100 are hooked onto a loading pallet (not shown) to secure the load placed on the loading pallet.

In this case, the belts 100 are integrated together by the fused parts 104 at the multiple through holes 103, so that the tension applied when tying up luggage will not cause the two belts 100 to peel off at the fused parts 104, causing the connecting parts 101 to come undone and the hooks F to come off.

As can be understood from the above description of operation, according to the above embodiment, the joining structure of the belt 100 has a plurality of through holes 103 penetrating the two overlapping belts 100, and the inner periphery of each of these through holes 103 is melted to form a fused portion 104 where the two belts 100 are solidified together. Therefore, by partially melting the overlapping belts 100, the belts 100 can be joined together easily and in a short time.

Furthermore, the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the purpose of the present invention. In the description of each modification, the same components as those in the above-described embodiment in the referenced drawings are given the same reference numerals, and redundant descriptions are omitted as appropriate.

For example, in the above embodiment, the through holes 103 are formed using laser light L. However, the through holes 103 may be formed by melting the belt 100. Therefore, the through holes 103 may be formed, for example, by inserting a needle heated to the melting temperature of the belt 100.

In the above embodiment, the belt 100 is configured by forming a recess 105 at one opening at both ends of the through hole 103 and forming a protruding portion 106 at the other opening. This allows the belt 100 to have a smooth surface on the side of the joint 102 where the recess 105 is formed, improving the feel and appearance. In addition, when the surface of the joint 102 where the protruding portion 106 is formed is used to tie down luggage, the belt 100 can improve the frictional resistance between the luggage and the surface, making it difficult for the belt 100 to shift out of position. However, the belt 100 may be configured by forming a recess 105 or a protruding portion 106 at each opening at both ends of the through hole 103, or by omitting the recess 105 and the protruding portion 106.

In addition, in the above embodiment, multiple through holes 103 are formed. However, it is sufficient that at least one through hole 103 is formed.

In the above embodiment, the through hole 103 is formed to have a diameter of approximately 1 mm. This allows the belt 100 to make the through hole 103 less noticeable and also prevents objects around the belt 100 from entering and getting caught in the through hole 103. In this case, the same effect can be achieved by forming the through hole 103 to have a diameter of 2 mm or less. However, it goes without saying that the through hole 103 may be formed to have a diameter of more than 2 mm.

In the above embodiment, the belt 100 is white. In this way, the belt 100 can be formed in a light color such as transparent or translucent, as well as in a white-based color such as white or gray, so that the through holes 103 can be formed with high precision in a short time by the laser light L. However, the belt 100 can also be formed in a dark color such as black or navy blue.

In the above embodiment, the joint 102 is formed by folding back the tip of the belt 100 to form the connecting portion 101. However, the joint 102 may be formed by overlapping and joining both ends of one belt 100 to each other to form the entire belt 100 into a ring shape, or by joining two or more independent belts 100 to each other.

In the above embodiment, the joint 102 is configured to join two belts 100 by overlapping them. However, the joint 102 may be configured to join at least two or more belts 100 by overlapping them.

F... hook, H... laser irradiation head, L... laser light,
100...belt, 101...connecting portion, 102...joint portion, 103...through hole, 104...fused portion, 105...recess, 106...projecting portion.

Claims (5)

A joint structure for a cargo securing belt in which two cargo securing belts made of resin fibers woven in a flat belt shape are overlapped and integrally joined together ,
The overlapping securing belts have through holes passing between each other,
The through hole is
This cargo securing belt joint structure is characterized in that, before the cargo securing belt is used to secure a cargo, the inner peripheral portion melts and a fused portion is formed where the overlapping cargo securing belts solidify without blocking the through hole, and at the opening at both ends where the cargo securing belt is applied to the cargo , a part of the molten material protrudes outward and solidifies into a protruding portion. In the joining structure of the cargo securing belt according to claim 1,
A joining structure for a cargo securing belt, characterized in that a plurality of the through holes are formed. In the joining structure of the cargo securing belt according to claim 2,
The through hole is
A joining structure for a cargo securing belt, characterized in that the diameter is 2 mm or less. The joining structure of the cargo securing belt according to claim 2 or 3,
The fusion portion is
A joining structure for a cargo securing belt, characterized in that the fused portions of adjacent through holes are connected to each other. In the joining structure of the cargo securing belt according to any one of claims 1 to 4,
A joining structure for a cargo securing belt, wherein the cargo securing belt is formed in a light color.

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