JP3229565U - A device for stringing archery bows - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an unstable state such as twisting of a rim when stretching a string, a small required force, and a bow stringer which is unlikely to be difficult to remove after the string is stretched on a bow. I will provide a. SOLUTION: A loop 2 is provided at one end of a string body 7 so as to be hooked on a string knock of a bow for stretching a string. The loop is provided with a support 13 having a mounting hole, and the support is attached by passing a string constituting the loop through the mounting hole. The direction of the force applied to the bow by the loop applied to the string knock changes depending on the presence of the support. [Selection diagram] Fig. 1

Description

The present invention relates to an instrument (bowstringer) used when performing the work of putting or removing a string on a bow used in archery competition. More specifically, the present invention relates to a bow stringer that makes it possible to easily and safely perform the work of stretching or removing the string even when it is necessary to hang the string very close to the end of the bow.

Archery competition was originally a popular sport in the United Kingdom and the United States, but now it has a large competitive population in Japan as well. In recent years, bows widely used in archery are of the type called recurve bow, and in particular, the takedown bow, which is a bow with a handle and rim that are separate parts, is the mainstream. This is because the best performance can be obtained by using a material that is more suitable for the function of each part of the bow, and it is also advantageous for storage and transportation by disassembling the long bow to make it compact.

Now, when assembling the bow, it is necessary to stretch the string on the bow, which is done by hooking the loops provided at both ends of the string on the string knock which is the groove provided at the tip of the tip of the rim. At this time, it is necessary to hang a string loop on the tip of the rim while bending the bow (actually the rim) greatly, which is an easy task for those who are not skilled in this work or weak women. is not. Also, as the name suggests, the recurve bow, which has been widely used in recent years, has a shape that warps in the direction opposite to the bending direction of the bow (recurve part) toward the tip of the rim, so the bow is carelessly bent. Attempting to do so will cause the rim to twist, damaging the bow or increasing the risk of injury from a bouncing bow. Similarly, when removing the string from the bow, the bow (actually the rim) must be bent further by the force that overcomes the restoring force of the bow (actually the rim) to remove the loop of the string under strong tension from the string knock. There is the same danger as when stringing.

Conventionally, a device called a bow stringer has been used to prevent the above-mentioned dangers and to allow beginners and weak people to safely and easily attach and detach strings to and from the bow. The invention disclosed in Japanese Patent Application Laid-Open No. 2016-214702 according to the invention by the inventor of the present invention is also an example of such a bow stringer. As shown in FIG. 5, this bow stringer is provided with loops (2) and pockets (3) at both ends of the string body (7), and the loops are fixed to the string body by binding and said. The most important feature is that the loop is pulled so that the fixation with the string body is tightly bound. The procedure for stringing with this bow stringer is as follows. To remove the string using the bow stringer, the string loop may be removed from the string knock with the bow safely bent by the following steps 2 and 3.

1. 1. One loop of the string is passed through the upper rim, and the other loop is hooked on the string knock on the lower rim.
2. 2. A pocket provided at one end of the bow stringer string is placed over the tip of the lower rim and fixed. Next, the loop provided at the other end of the string body is hung on the string knock provided on the tip of the upper rim. Since the bow stringer string is bent sufficiently longer than the string, it is extremely easy to connect the pockets and loops of the string to the tip tips at both ends and the string knock.
3. 3. Step on the center of the bow stringer string to secure it, and lift the bow straight with one hand. As a result, the bow pulled by the bow stringer evenly at both ends is in a stable and bent state as when the bow is squeezed.
4. With your other hand, hang a string loop on the string knock on the upper rim. The bow stringer causes the bow (actually the rim) to bend significantly, allowing the string to be long enough to allow the loop to easily hang on the string knock.
5. Gradually lower the bow, make sure the string is properly stretched on the bow, and remove the bow stringer from the bow.

By the way, in recent years, by improving the strength of the materials that make up the rim and devising the design, it has become possible to obtain sufficient durability even if a string is hung near the end, and by doing so, the rim There are increasing cases where string knocks are provided near the ends of the rim because the effective length can be increased without changing the total length, and the bow is made using a traditional bow stringer with pockets on both ends of the string. It was becoming difficult to put a string on the pocket. Because the tip of the rim tip to which the string should be stretched and the string knock are thin and small, the string knock part may be covered with a normal size pocket, but if the pocket is made smaller, the risk of falling out increases. is there. However, the bow stringer disclosed in Japanese Patent Application Laid-Open No. 2016-214702, in which one end of the string is a loop, can handle such a case without any problem. In addition, this bow stringer has a simple structure in which a pocket is provided at one end of the string and a loop is provided at the other end, so that it is compact and lightweight, and is an excellent device that is convenient for storage and transportation.

However, when the string is stretched or unscrewed by this bow stringer, the loop is in a state where it can freely rotate around the string knock only by hanging on the string knock portion, so that the string body is particularly used when stringing the recurve bow. At the moment of pulling up the bow while holding the bow with a foot etc., the rim may be twisted and become unstable. In addition, the force required to pull up the bow and bend the rim is large, and when the string is hung on the string knock with the rim bent, the loop is sandwiched between the string and the string knock. There has been the problem that it sometimes becomes difficult to remove the loop.

Japanese Patent Application Laid-Open No. 2016-214702

As explained above, the problems to be solved by the present invention are that the rim is less likely to be in an unstable state such as twisting when the string is stretched or removed, the required force is small, and the rim is bent. It is to provide a bow stringer that is unlikely to cause a situation in which the loop is sandwiched between the string and the string knock when the string is hung on the string knock in the state and it becomes difficult to remove the loop.

(1) In order to solve the above-mentioned problems, in the present invention,
With the string body
At least one end of the string is provided with a loop with a support having mounting holes.
The loop is made up of strings
The support is a bow stringer characterized in that it is attached to the loop by passing the string through the attachment hole.

The string body has the strength to withstand the tension required when stringing or removing the string from the bow using a bow stringer, and even if it is repeatedly stepped on with the foot during use, it easily deteriorates such as wear. Any string can be used as long as it has no durability. However, if it is too thin, there is a risk of injury if a finger touches it while tension is applied during use, so it is preferable to use one having a diameter of at least 2 mm or more, preferably 3 mm or more. Further, the length of the string is at least 165 cm or more, preferably 170 cm, and more preferably 180 cm or more so that the bow stringer can be attached to the string knocks at both ends of the bow without the string. preferable. Generally, the length of the string used in archery is about 150 cm for the short one and about 180 cm for the long one, so if it is not longer than this, it is difficult to easily attach the bow stringer to the bow that stretches the string. is there.

In addition, at least one end of the string body is provided with a loop whose main component is a flexible string, which functions to attach the bow stringer to the bow by hanging it on the upper string knock. Therefore, the size of the loop should be larger than the size that the upper tip of a general bow can easily pass through.

The support is typically in the shape of a cylinder or prism with mounting holes along the central axis, and is made of a material such as resin or rubber. When stringing a bow with a bow stringer, the support and the bow (more specifically, near the tip of the rim tip of the bow) come into contact with each other, so there is a risk of damaging the bow with metal or the like. Because there is.

By the way, it is preferable that the support is rotatably attached by passing a string forming a loop through the attachment holes provided therein. This is the support of FIG. 1 showing an embodiment near the loop portion of the bow stringer according to the present invention, and FIG. 2 showing the vicinity of the loop portion when a string is stretched on a bow using the bow stringer according to the present invention. It is easy to understand by referring to the body (13) and the mounting holes (14) provided therein. In other words, to put a string on the bow means to hang the string (10) on the string knock (12) provided at the tip of the rim while bending the bow (rim) with a bow stringer. Since the bow stringer loop (2) pulls the string knock (12) part with a strong force when bending, when the string (10) is hung on the string knock, it will be in a state of covering the loop (2). Cheap. In this case, even if the bow stringer is loosened, the tension of the string (10) causes the loop (2) to be sandwiched between the string knock and the string knock, making it difficult to remove. However, when the support (13) is provided, the direction in which the loop (2) pulls the rim changes, and such a state is unlikely to occur. In order to obtain such an action, it is preferable that the contact state between the support and the rim is stable regardless of the degree of deflection of the rim, and therefore the loop and the support are preferably attached rotatably. is there.

Also, when the string is removed from the bow, the support (13) also does not cause the bow stringer loop (2) to cover the string (10). Then, as the bow stringer gradually bends the bow, the bow stringer loop (2) is gradually pulled with a strong force, while the tension of the string (10) gradually weakens, so that the string (10) becomes a string. It is naturally extruded from the knock (12). In this way, the string can be safely removed.

Also, when bending the rim, if the force that the bow stringer pulls the string knock through the loop is close to parallel to the rim, it will try to bend by applying a force that crushes the rim in the longitudinal direction. At this time, the rim may be twisted. In particular, the type of rim called recurve bow, which has been widely used in recent years, has a shape that warps in the direction opposite to the bending direction of the bow in the initial state, so it is more likely to twist. However, if there is a support, it is close to trying to bend the rim by applying a bending force (moment) to the rim, and stable work is possible without causing twisting in the rim. This also contributes to reducing the force required to bend the bow with the bow stringer.

By the way, the loop portion (2a) of the bow stringer penetrates the mounting hole (14) of the support (13) while intersecting. Therefore, by adjusting the position where the loop portion (2a) passes through the mounting hole (14), the substantial size of the loop portion to be hung on the string knock can be easily changed. If the loop part is too large for the string knock, the mounting state tends to be unstable, and conversely, if the loop part is too small for the string knock, mounting becomes impossible, but with this bow stringer, the target bow It can always be used as a loop of the appropriate size for string knocks.

(2) In order to solve the above-mentioned problems, in the present invention,
The loop is fixed to the string by binding, and the loop is pulled so that the loop is more firmly bound to the string, according to (1). It is the bow stringer described.

As explained above, the bow stringer loop is hung on the bow string knock when stringing the bow, tension is applied to bend the bow, and the string is removed when the string is finished. At this time, a strong force is applied to support the force to bend the tough bow, and when the bow bends in this state, the degree of engagement changes and it rubs against the string knock or the support, and this is repeated. become. Therefore, the loop gradually wears with the use of the bow stringer. Therefore, if the loop is composed of a string and a separate component and only the loop can be replaced when worn, it is preferable that the bow stringer can be used for a longer period of time more economically.

Any conventional method can be used for the specific attachment method of the loop and the string body, but for example, a metal fitting such as a so-called carabiner can be used, and a metal fitting such as a ring is attached to the end of the string body. It can be attached by tying a first loop to the loop, for example, by tying the end of the string to form a loop.

(3) In order to solve the above-mentioned problems, in the present invention,
The loop is provided at one end of the string body.
The bow stringer according to (1) or (2), characterized in that a pocket is provided at the other end of the string body.

As already explained, when stringing a bow with a bow stringer, first pass one loop of the string through the upper rim and the other loop hung on the string knock on the lower rim. .. Then, the bow stringer bends the bow so that the string loop can be hung on the string knock on the upper rim. In other words, since the bow stringer is used after the string loop is applied to the string knock on the lower rim, there is no problem even if the string knock is covered when the bow stringer is connected to this part.

Therefore, it is preferable to provide a bag-shaped pocket at one end of the string body, which can be attached by covering the knock of the rim instead of the loop. It is very easy to attach the bag-shaped pocket over the rim knock, and if you insert the rim knock deep into the pocket, it will not come off easily unless you intentionally remove it, and it has excellent workability. Is possible.

Further, the bow stringer according to (1) or (2), characterized in that the loops are provided at both ends of the string body, can also be used.

In recent bows, string knocks may be provided very close to the end of the rim because the effective length can be increased without changing the overall length of the rim. If the pocket is miniaturized to cope with this, the risk of falling off increases, so that it may be difficult to attach the bow stringer to the rim using the pocket. However, if you have loops on both ends of the string, you can hang the loop on the string knock regardless of whether the string knock is close to the end of the rim, and what kind of rim you want. The bow stringer can be used even with the bow used.

(4) In order to solve the above-mentioned problems, in the present invention,
The bow stringer according to any one of (1) to (3), wherein the support has a regular hexagonal prism shape and the mounting hole is provided along the central axis thereof.

As already explained, the loop is equipped with a support with mounting holes to prevent twisting of the rim when bending the bow, reduce the required force, and string knock on the string knock of the bow rim. Various effects can be obtained, such as preventing the bow stringer from being pinched by the loop of the string when hanging. Such an effect is essentially obtained by changing the direction in which the loop hooked on the string knock is pulled by the support, but the position and posture of the support are sufficiently stable when the string is stretched. If this is not done, it will be difficult to obtain such an effect sufficiently. For example, it is clear that it is extremely difficult to obtain the effect with a sphere in which the support can freely roll in all directions.

Therefore, in the present invention, the support has a regular hexagonal prism shape, and a mounting hole is provided along the central axis thereof. This is because if the shape is a regular hexagonal prism, a sufficiently wide side surface abuts on the rim and the posture does not change easily, and the support is in a stable state, and the action and effect of the support can be sufficiently exerted. If the support has a cylindrical shape, it may cause instability such as rolling, and the contact with the rim is not a surface but a line, which may damage the rim, which is not preferable. However, it is possible to make it into a shape such as a regular tetrahedron or a regular octagonal prism. However, in the case of a regular tetrahedron, the angle formed by the side surfaces is a relatively sharp angle of 90 degrees, so the presence of such a portion on the surface in contact with the rim may damage the rim. On the other hand, in the case of a regular octagon, the angle formed by the side surfaces is an obtuse angle of 135 degrees, but on the other hand, there is a concern that the area in contact with the rim will be insufficient and rolling will occur. Therefore, it is most preferably a regular hexagonal prism shape.

By the way, it is of course possible to use a support having a shape other than the regular polygonal prism shape. However, since the feeling of use of the bow stringer differs depending on which side surface comes into contact with the rim, it is most preferable to use a regular polygonal prism shape.

(1) At least one end of the string body is provided with a loop provided with a support having a mounting hole, and the support is made into a bow stringer attached to the loop by passing the string through the mounting hole. When using a stringer to bend the bow, the loop changes the direction of the force that pulls the string knock on the rim, allowing the bow to bend with less force and reducing the risk of twisting the rim. In addition, it is possible to suppress the occurrence of a situation in which the bow stringer loop is pinched and the bow stringer is difficult to remove when the string loop is hooked on the string knock with the bow bent. It plays the effect.

Also, when removing the string from the bow, the bow can be bent with less force as when stretching the bow, which has the effect of reducing the risk of twisting the rim, and the bow stringer. Gradually bending the bow with will naturally push the string out of the string knock, which has the effect of making it safer to remove the string.

(2) Since the loop is fixed to the string by tying it, the loop that gradually wears due to string knock or rubbing against the support can be replaced, and the bow stringer can be used more economically for a long period of time. It works. By binding the loop so that it is more firmly fixed to the string by pulling the loop, the loop suddenly comes off and the bow bounces when the bow stringer is used to stretch the string on the bow. Alternatively, it has the effect of preventing accidents that hurt workers.

(3) Since the cord has a loop at one end and a pocket at the other end, when attaching the bow stringer to stretch the string on the bow, it can be attached simply by covering the pocket with the knock on the rim. Moreover, if the knock of the rim is deeply inserted into the pocket, it will not be easily removed unless it is intentionally removed, so that excellent workability can be obtained.

In addition, if the cord is provided with loops at both ends, the bow stringer can safely stretch the string even if the bow is such that the string knock is provided very close to the end of the rim. It works.

(4) Since the support has a regular hexagonal prism shape and the mounting holes are provided along the central axis thereof, when a string is stretched on the bow using a bow stringer, one side surface of the support The contact area of the rim is sufficiently large to enable stable work, and at the same time, the concern that the rim with which the support comes into contact may be damaged can be reduced.

It is explanatory drawing which showed the loop part of the bow stringer which concerns on this invention. It is explanatory drawing which showed the state which the bow stringer which concerns on this invention was hung on the string knock. It is explanatory drawing which showed the bow stringer which concerns on this invention. It is explanatory drawing which showed the usage method of the bow stringer. It is explanatory drawing which showed the conventional bow stringer.

Hereinafter, the bow stringer according to the present invention will be described in detail with reference to the drawings.

FIG. 3 is an explanatory diagram showing an embodiment of the bow stringer according to the present invention. Further, FIG. 1 is an explanatory diagram showing the vicinity of the loop portion of FIG. Further, FIG. 2 is an explanatory view showing a state in the vicinity of a loop portion when a string is stretched on a bow using the bow stringer according to the present invention. In addition, this embodiment is a form in which a loop is provided at one end of the string body and a pocket is provided at the other end as described in (3), and also has the features described in (5).

In the present embodiment, a tough string having a diameter of 4 mm is used for the string body (7), and the length thereof is 180 cm. This is a selection of lengths that can be attached to most bows used in Japan with a margin, but if it is too long for the size of the bow, the bow will be lifted very high to bend it. Since it becomes difficult to use, such as having to do so, it is advisable to prepare ones having different lengths as appropriate, or to provide a mechanism for adjusting the length of the string. Although not shown, it goes without saying that this can be appropriately performed by an arbitrary standard method.

A pocket (3) constructed by comparison is attached to the lower end of the string body (7). The pocket (3) is provided with a bag-shaped portion (3a), and the circumference of the opening thereof is 5.5 cm, so that various bow lower tips can be inserted and stably attached. The depth of the bag-shaped portion (3a) is set to 2 cm so that the bag-shaped portion (3a) does not easily come off during the work of stringing the bow using a bow stringer. Further, the pocket (3) is provided with a hole reinforced with leather eyelets as a string body connecting portion (3b), and the string body (7) is bound there.

A loop (2) is provided at the upper end of the string body (7). The loop (2) is composed of a tough string having a diameter of 2.3 mm. Further, the loop (2) is provided with a regular hexagonal prism-shaped support (13). The support (13) is provided with a mounting hole (14) along its central axis, and the loop (2) and the support (13) are formed by passing a string constituting the loop (2) through the mounting hole (14). Is attached. The circumference of the loop portion (2a) of the loop is 5 cm, so that most rim tips can be easily passed through the loop portion (2a), and the loop portion (2a) can be well stabilized in a state of being hooked on the string knock (12).

When stringing a bow with a bow stringer, the bow is bent by pulling up the bow while holding the string with the foot while the loop (2) is hung on the string knock (12). The situation is as shown in FIG. That is, when the loop portion (2a) is pulled by the string body (7) to bend the bow, the support (13) is present, so that the loop portion (2a) presses the end of the string knock (12). The force is applied in the direction in which the rim is to be bent (downward in the figure) rather than in the pressing direction (rightward in the figure). Therefore, it is possible to easily hang the string (10) on the string knock (12) of the bent bow at an appropriate position as shown in the figure. Further, the situation where the loop portion (2a) is sandwiched between the string (10) and the string knock (12) does not occur, and the bow stringer can be easily removed.

A loop is formed at the upper end of the string body (7), and most of this is interpolated into a hollow pipe-shaped sleeve (5). The sleeve (5) is made of a soft vinyl resin having a fixed shape while having a certain degree of flexibility, and has a diameter of about 8 mm and a length of 3 cm, which makes it easy to grasp with fingers when using a bow stringer. At the same time, the sleeve (5) inserts the binding end (2c), which is the end of the string extending from the binding (2b) of the loop (2), to realize a neat appearance and the binding end. It prevents the situation where the part (2c) becomes disordered and the string loop is caught in the disordered state.

By the way, for convenience of explanation, the bow stringer that is attached to the lower rim by a pocket has been described in the above embodiment, but this is not intended to limit the possible configurations of the present invention, and the present invention is the present invention. Needless to say, it includes various modifications within the range that does not impair the technical intent. For example, it can be attached to the lower rim by a loop, and unlike the above embodiment in which the loop portion and the string body are made of separate members, it is also possible to configure this with an integral member. is there. Further, the presence / absence and shape of the sleeve, the shape of the support, and the like may be appropriately changed.

As described above, the present invention is less likely to cause an unstable state such as twisting of the rim even in an archery competition bow in which the distance between the string knock and the rim end is extremely short, the required force is small, and the bow. It provides a bow stringer that is unlikely to be difficult to remove after the string has been stretched, and has extremely high industrial applicability.

1 Bow stringer 2 Loop 2a Loop part 2b Tying part 2c Tying end part 3 Pocket 3a Bag-shaped part 3b String connecting part 4 String binding part 5 Sleeve 6 String binding part 7 String 8 Bow 9 Rim 10 String 11 Chip 12 String Knock 13 Support 14 Mounting Hole

Claims (4)

With the string body
At least one end of the string is provided with a loop with a support having mounting holes.
The loop is made up of strings
A bow stringer, characterized in that the support is attached to the loop by passing the string through the mounting hole. The first aspect of the present invention is characterized in that the loop is fixed to the string body by binding, and the loop is pulled so that the fixation with the string body is more firmly bound. The bow stringer described. The loop is provided at one end of the string body.
The bow stringer according to claim 1 or 2, wherein a pocket is provided at the other end of the string body. The bow stringer according to any one of claims 1 to 3, wherein the support has a regular hexagonal prism shape and the mounting hole is provided along the central axis thereof.

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