JP7589628B2 - Stringing tool and stringing method - Google Patents

Description

The present invention relates to a stringing tool and a stringing method.

Patent Document 1 discloses a multi-purpose ring and cord assembly that combines at least two ring cords, each of which is made of a fiber ring made of a single fiber or fiber bundle such as polyamide-based fiber with high tensile strength, covered with a sheath-shaped braided cord. It describes how, when lifting a box-shaped object, multiple ring cords are connected and wrapped around the box-shaped object, and another ring cord is wrapped or hung vertically and horizontally around the wrapped ring cords, crossing them to prevent the box-shaped object from falling off.

Japanese Patent Application Publication No. 09-176972

When stringing a box-shaped object to prevent it from falling out, the string is stretched by hand while being hung on the box. In the case of strings with high tensile strength, as in Patent Document 1, the force required to pull the string (tensile load) is large, and the string cuts into the fingers, placing a strain on the worker. For elderly people and women in particular, work involving a large string pulling load is too much of a strain.

The present invention was made in consideration of these problems, and the object of the present invention is to provide a stringing tool and a stringing method that make it easy to string objects.

The stringing jig according to one embodiment comprises a gripping portion, an engagement portion that engages with an object to which the string is to be attached, and an arm portion that connects the gripping portion and the engagement portion and is curved in the longitudinal direction so as to be convex toward the object when the engagement portion is engaged with the object.

In one embodiment, a stringing method uses a stringing tool that includes a gripping part, an engagement part that engages with an object to which the string is to be attached, and an arm part that connects the gripping part and the engagement part and is curved along the longitudinal direction so as to be convex toward the object when the engagement part is engaged with the object, and the string is hooked to a position of the object opposite an engagement point where the engagement part engages with the object, and with one end of the string hung on the arm part, the engagement part is engaged with the object, and the gripping part is tilted away from the object using the engagement point as a fulcrum, causing the string to slide along the arm part and move from the engagement part to the object.

The present invention provides a stringing tool and a stringing method that make it easy to string objects.

1A and 1B are diagrams illustrating a configuration of a stringing jig according to an embodiment. FIG. 2 is a bottom view of the stringing jig of FIG. 1 . 1A to 1C are diagrams illustrating various states of a stringing method according to an embodiment. 1A to 1C are diagrams illustrating various states of a stringing method according to an embodiment. 1A to 1C are diagrams illustrating various states of a stringing method according to an embodiment. 1A to 1C are diagrams illustrating various states of a stringing method according to an embodiment.

Below, an embodiment of the present invention will be described with reference to the drawings. For clarity of explanation, the following description and drawings have been omitted and simplified as appropriate. In each drawing, the same elements are given the same reference numerals, and duplicate explanations are omitted as necessary. Note that the invention according to the claims is not limited to the following embodiment, and all of the configurations described in the embodiment are not necessarily essential means for solving the problem.

The stringing tool according to the embodiment is used to string an object. In the following explanation, for example, a plastic box-shaped object is shown with a vinyl string tied around the side of the object to prevent it from falling.

When tying a string around a box-shaped object, the worker would hook the string around one corner of the object and then place the string around the four sides of the object while pulling and stretching the string with their hands. In this case, the tensile load pulling the string could reach as much as 110N, causing the string to dig into the worker's fingers and placing a strain on the worker. Therefore, the inventor devised a tool that allows the worker to easily tie a string around an object without having to pull the string directly with their hands.

Figure 1 is a diagram showing the configuration of a stringing jig 10 according to an embodiment. As shown in Figure 1, the stringing jig 10 includes a gripping portion 11, an engagement portion 12, an arm portion 13, and an abutment portion 14. The gripping portion 11 is disposed at one end of the stringing jig 10, and the engagement portion 12 is disposed at the other end. The gripping portion 11 is the portion that an operator holds with his or her hand.

The engagement portion 12 engages with the object T to which the string is to be attached. The arm portion 13 is a curved, round bar-shaped member that connects the grip portion 11 and the engagement portion 12. The arm portion 13 is curved in the longitudinal direction so as to be convex toward the object when the engagement portion 12 is engaged with the object. That is, in the example shown in FIG. 1, the lower side of the stringing jig 10 is the side facing the object.

The shape of the arm portion 13 can be an R-shape with a maximum radius based on any two points of the arm portion 13. For example, the arm portion 13 can be an R-shape with a radius of 140 mm for a circle passing through the connection point between the arm portion 13 and the engagement portion 12 and the connection point between the arm portion 13 and the grip portion 11.

The arm portion 13 and the attachment portions of the grip portion 11 and engagement portion 12 can be integrally formed from the same material. The material of the arm portion 13 is, for example, a metal material such as stainless steel. The attachment points of the grip portion 11 and engagement portion 12 extending from the arm portion 13 can each be straight lines. The angle α between the straight line of the attachment point of the engagement portion 12 and the straight line of the attachment point of the grip portion 11 can be, for example, 20 degrees.

The gripping portion 11 may be provided with a non-slip surface made of an elastic material such as rubber. The outer diameter of the gripping portion 11 is preferably larger than the outer diameter of the arm portion 13. The outer diameters of the gripping portion and the arm portion 13 refer to their maximum diameters (i.e., the maximum radial dimension at their outer periphery).

The gripping portion 11 and the abutting portion 14 may be formed into a polygonal shape in cross section. In this case, the outer diameter of the gripping portion 11 and the arm portion 13 refers to the circumscribed circle diameter of the polygon. In this way, by forming the outer diameter of the gripping portion 11 to be larger than the outer diameter of the arm portion 13, the worker can grip the gripping portion 11 firmly and can easily apply force when stringing the object T.

Figure 2 is a view of the stringing jig of Figure 1 as seen from below. As shown in Figure 2, the engagement portion 12 is provided with an abutment portion 14. When the engagement portion 12 is engaged with the object T, the abutment portion 14 abuts against the upper surface of the object T. In the embodiment, the abutment portion 14 is provided in a substantially straight line along the engagement portion 12 as seen from below, and the entire abutment portion 14 abuts against the upper surface of the corner of the box-shaped object T.

The engaging portion 12 has a shape that does not interfere with the object T when the gripping portion 11 is tilted with the engaging portion 12 engaged with the object T. In the embodiment, since the object T is a box-shaped body, the engaging portion 12 can be V-shaped. In this case, the engaging portion 12 is disposed along two side surfaces at a corner of the object T. Furthermore, when the gripping portion 11 is tilted, the ridge formed by the two side surfaces of the object T enters the V-shape of the engaging portion 12, so the object T and the engaging portion 12 do not collide.

Now, with reference to Figures 3 to 6, the lacing method according to the embodiment will be described. Figures 3 to 6 are diagrams showing various states of the lacing method according to the embodiment. First, the engagement portion 12 is engaged with a corner of the object T. At this time, as shown in Figure 3, the entire abutment portion 14 abuts along the upper surface of the corner of the object T. The point where the engagement portion 12 engages with the object T is defined as the engagement point.

At this time, one end of the string is already hooked on the object T at a position facing the engagement point. In this example, one end of string B is hooked on the corner of the object T that is diagonally opposite the engagement point. The other end of string B is also hooked on arm portion 13. This state is shown in Figure 4. Arm portion 13 is positioned so that it is convex toward object T, and string B is in contact with the concave side of arm portion 13.

In this state, the gripping portion 11 is tilted in a direction away from the object T, using the above-mentioned engagement point as a fulcrum. In other words, the gripping portion 11 is pulled down as shown by the arrow in FIG. 4. This causes the string B to slide along the arm portion 13 toward the object T, as shown in FIG. 5.

Then, by continuing to pull down the gripping portion 11 until the ridge formed by the two sides of the object T enters the V-shaped engaging portion 12, the string B moves from the engaging portion 12 to the object T. This allows the worker to easily hang the string B on the object T without touching the string B directly with his/her hands, as shown in FIG. 6.

When the arm 13 is linear, even if the gripping part 11 is tilted away from the object T with the engagement point as the fulcrum, most of the applied force acts to pull the string B, and it does not move smoothly toward the object T. The tensile load at this time is 60 N.

In contrast, in the embodiment, as the gripping portion 11 is pulled down, the string B moves smoothly on the curved arm portion 13. The tensile load at this time is 11 N. In this way, the arm portion 13 is curved, which acts to send the string B in the direction of the target object T below.

As described above, by using the stringing tool 10 of the embodiment, the principle of leverage allows the string B to be tied to the object T with little force. This allows even women, the elderly, and people with disabilities to perform the stringing task. In addition, by abutting the contact portion 14 against the object T, it is possible to prevent the engagement portion 12 from shifting relative to the object T, making it easy to pull down the gripping portion 11 and ensuring that the string is tied to the object T. Furthermore, because the arm portion 13 is curved, the string B can move more smoothly on the arm portion 13 compared to when the arm portion is straight.

The present invention is not limited to the above embodiment, and can be modified as appropriate without departing from the spirit of the invention. For example, if the object T has a shape other than a box shape, the shape of the engagement portion 12 and the position of the abutment portion 14 can be modified as appropriate to match the shape.

REFERENCE SIGNS LIST 10 Stringing jig 11 Grip portion 12 Engagement portion 13 Arm portion 14 Contact portion T Object B String

Claims (5)

A gripping portion;
A V-shaped engaging portion that engages with a corner of an object of a box-shaped body to which a string is to be hung;
an arm portion that connects the grip portion and the engagement portion and is curved along a longitudinal direction so as to be convex toward the object when the engagement portion is engaged with the object;
Equipped with
Stringing jig. the engaging portion is engaged with the object in a state in which one end of a string is hooked on the object at a position facing an engagement point at which the engaging portion is engaged with the object and is hung on the arm portion;
By tilting the gripping part in a direction away from the object using the engagement point as a fulcrum, the string slides along the arm part and moves from the engagement part to the object.
The stringing jig according to claim 1. The engaging portion further includes an abutment portion that abuts against an upper surface of the corner of the object.
The stringing jig according to claim 1 or 2. The engaging portion has a shape that does not interfere with the object when the gripping portion is tilted in a state where the engaging portion is engaged with the object.
The stringing jig according to claim 2 or 3. A stringing tool is used, the tool including a gripping portion, a V-shaped engaging portion that engages with a corner of a box-shaped object to which a string is to be hung, and an arm portion that connects the gripping portion and the engaging portion and is curved along the longitudinal direction so as to be convex toward the object when the engaging portion is engaged with the object,
The string is hooked on the object at a position facing an engagement point where the engagement portion is engaged with the object,
With one end of the string hung on the arm portion, the engagement portion is engaged with the object;
By tilting the gripping portion in a direction away from the object using the engagement point as a fulcrum, the string is caused to slide along the arm portion and moved from the engagement portion to the object.
Stringing method.

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