JP7133266B2 - Fishing line guide and manufacturing method thereof - Google Patents

Description

The present invention relates to a fishing line guide that is attached to a fishing rod and guides a fishing line, and a manufacturing method thereof.

Generally, a fishing line guide includes a frame attached to the outer peripheral surface of the fishing rod, and a guide ring fixed to the frame and through which the fishing line is actually inserted. A ring holding portion for holding the guide ring and a fixing portion for mounting on the outer surface of the fishing rod are integrally formed on the frame.

Conventional fishing line guides made of fiber-reinforced resin, in particular, are formed by molding fiber-reinforced resin into a laminated plate and then cutting it into a desired fishing line guide shape. Specifically, a frame formed of a prepreg made of reinforced fibers impregnated with a synthetic resin is cut into a predetermined shape, and a plurality of cut frames are superimposed and press-molded to create a plate-like body. A fishing line guide is formed by cutting the plate-like body into a desired fishing line guide shape by an appropriate method such as press working, cutting by ejecting fluid such as water jet, or cutting by cutting tool such as an end mill.

Patent No. 5555441

However, the fishing line guide disclosed in Patent Document 1, which is formed by the above-described manufacturing method, has reinforcing fibers throughout the frame from end to end (to the side end surfaces of the frame), so it is highly rigid. It has poor deformability, and when the fishing line guide receives an impact from the side end face of the frame, it cannot absorb the energy well (the impact absorption rate of the side end face of the frame is low). Therefore, the frame of the laminated structure may break at the time of impact, causing delamination, which may lead to destruction. In other words, there is room for improvement in the impact resistance of conventional fishing line guides in which reinforcing fibers are present over the entire frame.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fishing line guide excellent in shock resistance, capable of absorbing an external shock and preventing breakage, and a method of manufacturing the same. aim.

In order to solve the above-described problems, the present invention provides a guide ring that is attached to the outer peripheral surface of a fishing rod and is composed of a frame formed of a prepreg made by impregnating reinforcing fibers with a synthetic resin, and through which a fishing line is inserted. In the fishing line guide, the frame has a ring holding portion to which the prepreg sheet is fastened, wherein the frame is formed by laminating a plurality of prepreg sheets, and the frame end portion along the direction orthogonal to the lamination direction is provided with the frame It is characterized by having a shock absorbing part with less reinforcing fibers or no reinforcing fibers than other parts of.

According to the above configuration, since the end portion of the frame formed of the prepreg is provided with the shock absorbing portion having less or no reinforcing fiber than the other portion of the frame, the fishing line can be pulled from the side end surface of the frame. Even if the guide receives an impact, the impact energy can be well absorbed by the impact absorbing portion that is mainly made of resin, which has higher impact absorption than reinforcing fibers, or is made of only resin. That is, due to the presence of the impact absorbing portion, the fishing line guide having the above structure has a higher impact absorption rate on the side end face of the frame than the conventional fishing line guide in which reinforcing fibers are present over the entire frame from end to end. Therefore, it is possible to avoid the conventional inconvenience that the frame of the laminated structure is broken at the time of impact, causing delamination and leading to destruction.

In the above configuration, the reinforcing fibers forming the prepreg are preferably long fibers longer than the width of the ring holding portion of the frame, for example, 2.0 mm or longer, in order to enhance the reinforcing effect of the prepreg. Also, it is desirable to include at least fibers extending in a direction (TD) perpendicular to the flow direction (MD) of the synthetic resin. Also, the form of the prepreg is arbitrary. For example, the prepreg may be a plate-like sheet, a columnar body (for example, a solid body), or a tubular body, as long as a frame of a predetermined shape can be formed. Alternatively, the prepreg itself may form the shape of the frame as it is. Such a frame-shaped prepreg can be realized by various molding techniques including cutting, sewing, and the like.

Further, in the above configuration, it is preferable that the impact absorbing portion is positioned on the outer peripheral portion of the ring holding portion. According to this, the impact resistance of the outer peripheral portion of the ring holding portion, which is most susceptible to impacts due to external force, is enhanced, and damage to the fishing line guide can be effectively prevented. In this case, the shock absorbing portion may be provided over the entire circumference of the ring holding portion, or may be provided only in a portion of the outer circumference of the ring holding portion (preferably over an angular range of 180° or more).

In the above configuration, the impact absorbing portion may be formed by the flow of synthetic resin due to molding pressure during molding of the frame, or by fixing a separate member made of resin without reinforcing fibers to the frame. may be formed by Further, in the latter case involving fixing of separate members, it is preferable that the impact absorbing portion is integrally heat-sealed or heat-bonded by press molding. In this case, it is preferable to interpose a primer having an adhesive action between the frame and the impact absorbing portion in order to increase the fixing strength. Moreover, insert molding etc. can be mentioned as a manufacturing method which enables fixation of another member, for example.

In the above configuration, the impact absorbing portion preferably has a dimension of 0.05 mm to 0.2 mm along the direction orthogonal to the lamination direction of the prepreg sheets. Specifically, for example, the ring holding portion of the frame It is preferably between 2% and 13% of the width dimension.

Further, in the above configuration, the frame is formed by laminating a plurality of prepreg sheets (the prepreg is formed by a laminate of fiber-reinforced resin), but even if the synthetic resin of the prepreg is a thermosetting resin or a thermoplastic resin, good. In this case, the thermosetting resin is excellent in adhesiveness, and the thermoplastic resin is excellent in impact resistance. In addition, the laminate (prepreg sheet) is preferably formed of 3 to 15 layers, and the outermost layer forming the laminate extends along the outer circumference of the woven fabric layer or frame. A layer containing fibers is preferred. When the outermost layer is a woven fabric layer, strength improvement and structural stability can be ensured, and when the outermost layer includes fibers extending along the outer circumference of the frame (e.g., extending in a figure-of-eight shape), it is particularly advantageous. It is possible to effectively promote the formation of the impact absorbing portion accompanying the flow of the synthetic resin, and to improve the strength.

The invention also provides a method of manufacturing a fishing line guide having the features described above.

ADVANTAGE OF THE INVENTION According to the present invention, a fishing line guide excellent in shock resistance, capable of absorbing an external shock and preventing breakage, and a method of manufacturing the same can be obtained.

1 is a longitudinal sectional view of a fishing line guide according to one embodiment of the present invention; FIG. FIG. 2 is a front view of the fishing line guide viewed from direction A in FIG. 1; 2 is a diagram showing a state in which the fishing line guide of FIG. 1 is attached to a fishing rod (rod); FIG. FIG. 3 is a cross-sectional view showing a laminated structure of prepregs forming a frame; 1 is a plan view of a prepreg plate from which a plurality of frames are cut; FIG. FIG. 4 is a cross-sectional view showing a state in which a prepreg sheet and a guide ring are set in a press molding die; (a) is a cross-sectional view along line XX in FIG. 6 before pressure molding, and (b) is a cross-sectional view along line AA in (a). (a) is a cross-sectional view along line XX in FIG. 6 after pressure molding, and (b) is a cross-sectional view along line AA in (a). (a) shows a conventional frame, the upper drawing is a plan view, and the lower drawing is a sectional view along line BB in the upper drawing. Also, (b) shows a frame of a fishing line guide according to one embodiment of the present invention, the upper drawing is a plan view, and the lower drawing is a cross-sectional view taken along line BB in the upper drawing. .

An embodiment of a fishing line guide according to the present invention will be specifically described below with reference to the accompanying drawings. In the attached drawings, the direction of arrow A in FIG. 1 corresponds to the axial length direction of the fishing rod when the fishing line guide is attached to the fishing rod, and FIG. It is a diagram.

As shown in FIGS. 1 to 3, the fishing line guide 1 includes a frame 3 formed of a fiber-reinforced prepreg (hereinafter simply referred to as prepreg) in which reinforcing fibers are impregnated with a synthetic resin. A detailed manufacturing method of the frame 3 will be described later). The frame 3 includes a fixing portion 5 attached to the outer surface of a fishing rod (rod pipe) 40 (see FIG. 3), a ring holding portion 7 to which a guide ring 6 through which a fishing line is inserted is attached and held, and a ring holding portion. 7 and a supporting leg portion 8 connecting between the fixed portion 5 .

The fixed portion 5 is a portion fixed to the surface of the fishing rod 40 at the lower end of the frame 3. In this embodiment, the fixed portion 5 extends in the axial direction, and the contact surface 5a on the back side thereof is placed on the surface of the fishing rod 40. In the state, it is fixed by threading, adhesion, or the like.

The ring holding portion 7 is a portion to which the guide ring 6 is fixed so as to guide the fishing line while being separated from the surface of the fishing rod 40 . The ring holding portion 7 is formed with an opening (holding hole) 7a for integrally attaching the guide ring 6, and has a substantially circular outer shape as a whole. The guide ring 6, which is integrally attached to the opening 7a, is formed in an annular shape and is made of a material such as titanium, aluminum, SUS, ceramics, etc., which has a small sliding resistance on the fishing line guide surface 6a, which is the inner peripheral surface of the guide ring 6. formed by The guide ring 6 shown in FIGS. 1 to 3 is made of metal and has an annular groove 6b on its outer peripheral surface that engages with the inner edge of the ring holding portion 7 forming the opening 7a.

Further, the supporting leg portion 8 is a portion that connects the fixing portion 5 and the ring holding portion 7 so as to separate the guide ring 6 from the surface of the fishing rod.

At least one bent portion is formed in the frame 3 . In this embodiment, a first bent portion 10a is formed at the boundary portion between the fixed portion 5 and the supporting leg portion 8, and further, the supporting leg portion 8 is bent toward the ring holding portion 7 more gently than the first bent portion 10a. A bent second bent portion 10b is formed. In this case, the boundary portion corresponds to a region rising from the end portion of the fixing portion 5 that is actually fixed to the outer surface of the fishing rod toward the ring holding portion 7 .

Further, as will be described later, the frame 3 is formed by press working or the like from a prepreg (which becomes a plate-like body after heat-molding) in which bent portions 10a and 10b are formed. It is formed to have a predetermined outer shape. In this embodiment, as shown in FIG. 2, the frame 3 gradually widens as the supporting leg portion 8 rising from the end portion of the fixed portion 5 via the first bent portion 10a moves upward. The supporting leg portion 8 is integrally connected to a substantially circular ring holding portion 7 having an opening 7a to which the guide ring 6 is integrally attached. In this case, as shown in the figure, the supporting leg portion 8 may be formed with an opening (lightening) 8a in order to reduce the weight.

Next, a method for forming the frame 3 having the form described above will be described. First, the overall manufacturing process will be described.

As described above, the frame 3 is made of prepreg in which reinforcing fibers are impregnated with a synthetic resin. In this case, the prepreg is, for example, formed in a sheet shape in which reinforcing fibers such as carbon fibers and glass fibers are aligned in a predetermined direction or are knitted, and is made of a thermosetting resin (for example, epoxy resin) or It has a configuration in which a thermoplastic resin (for example, nylon or polypropylene) is impregnated as a matrix resin.

First, the prepreg as described above is cut into a predetermined shape, and these are laminated to form a plurality of layers. The number of prepregs to be superimposed (the number of layers) and the structure of each prepreg are not particularly limited. The type of prepreg and the conditions for stacking are arbitrarily adjusted in consideration of the fact that a load is applied to the prepreg, the characteristics of the fishing rod to be attached, the attachment part, and the like.

In particular, in this embodiment, the frame 3 (the prepreg 20 forming the frame 3) formed by laminating a plurality of prepreg sheets is arranged as follows. That is, the frame 3 of the present embodiment is composed of a plurality of fiber-reinforced resin layers in which prepreg sheets in which reinforcing fibers are impregnated with synthetic resin are laminated. In this embodiment, as an example, as shown in FIG. 4, an axial fiber resin layer 21 in which reinforcing fibers are arranged along the axial direction of the fishing rod and a predetermined angle with respect to the axial direction of the fishing rod. and diagonal fiber resin layers 22a and 22b in which reinforcing fibers are aligned in the cross direction, and a fabric layer 23 in which reinforcing fibers are knitted.

Specifically, in the present embodiment, the neutral axis area (the neutral axis is indicated by X in FIG. 4), which is the middle position of the thickness of the frame 3, is provided with a prepreg in which the reinforcing fibers are aligned in the axial direction. Long direction fiber resin layer 21 is arranged, and on the outside (both sides) thereof, a predetermined angle (the inclination angle is arbitrary, but preferably 15 to 75 degrees, more preferably 30 to 60 degrees) with respect to the axial direction. The oblique fiber resin layers 22a and 22b are arranged by prepregs in which reinforcing fibers are aligned in the outermost layer (the entire surface of both sides may be the outermost region), and the reinforcing fibers are provided in the outermost layer. A woven fabric layer 23 is arranged by knitted prepregs. The axial length direction fiber resin layer 21 may have a plurality of layers (1 to 4 layers) (preferably, the laminate is formed of 3 to 20 layers as a whole). Further, in the diagonal fiber resin layers 22a and 22b, the orientation directions of the reinforcing fibers in each layer may be different.

Thus, when forming the fishing line guide 1 made of fiber-reinforced resin, it is possible to select and laminate prepregs such that the reinforcing fibers are oriented in at least three directions when the frame 3 itself is viewed from above. preferable. That is, by setting the orientation directions of the reinforcing fibers in three or more directions, it is possible to efficiently form a fishing line guide that is lightweight and excellent in strength.

It is effective to dispose the woven fabric layer 23 on the outermost layer of the frame 3 as in the arrangement of the prepregs described above. This is because the surface of the frame 3 is a portion that easily comes into contact with other objects and is easily peeled off. By arranging a woven fabric layer in which reinforcing fibers are knitted in this surface area, the tearing and peeling of the reinforcing fibers can be effectively prevented, and the strength is improved. , and stabilization can be achieved.

Further, even in the case of the present embodiment in which separate members are attached, a prepreg plate-like body 30 as shown in FIG. The frame 3 including the opening 7a of the holding portion 7 is cut out so as to have a predetermined shape. The bent portions 10a and 10b described above are already formed in the plate-like body 30, and therefore, cutting by press working, cutting by liquid (such as water jet), cutting by cutting tool (such as end mill), sewing machine processing, etc. By adopting an arbitrary method, it becomes possible to cut out a plurality of frames 3 from one plate-like body 30 shown in FIG. 5, and it becomes possible to efficiently manufacture a lightweight and high-strength fishing line guide. .

During this processing, it is preferable to simultaneously form the basic outer shape of the frame 3, that is, the support leg portion 8 having the opening 8a, but these may be formed in separate steps. In addition, the plate-like body 30 is not limited to a single simple planar shape, and may have a shape in which the thickness of the laminate is changed depending on the position, or a shape in which the plate-like portion extends in a plurality of directions (T-shape, inverted Y-shape, etc.). , or may include a curved surface shape, or may be a combination of a plurality of plate-like portions.

The prepreg (preform) 20A in which the opening 7a of the ring holding portion 7 is formed by cutting out from the plate-like body 30 in this manner is placed in a press molding die 50 as shown in FIGS. set. The mold 50 of this embodiment is composed of an upper mold (second mold) 51 and a lower mold (first mold) 52 that are vertically split. set in place. In this case, the lower die 52 has a projection 52c for centering and holding that is inserted into the opening 7a of the ring holding portion 7, and the projection 52c and the opening 7a of the ring holding portion 7 are fitted to each other. The prepreg 20A is positioned. In this positioning state, the end portion of the prepreg 20A along the direction orthogonal to the lamination direction of the laminated structure of the prepreg 20A, in this embodiment, the end portion of the prepreg 20A at the outer peripheral portion of the ring holding portion 7 and the inner surface of the lower die 52 A predetermined gap 70 is ensured between. Also, in this positioning state, as shown in FIG. 7, a portion of the prepreg 20A protrudes from the cavity 52S of the lower mold 52 in the stacking direction X thereof.

In the lower mold 52, bend forming protrusions 52a and 52b are formed at positions where the bent portions 10a and 10b of the prepreg 20A are placed. Bending recesses 51a and 51b are formed at positions corresponding to 52b. Also, the molding surface region of the mold 50 is coated with a release agent.

Further, in the present embodiment, as described above, the mold 50 is split vertically, so the prepreg 20A is placed on the lower mold 52 and held in a predetermined shape according to the shape of the mold. Of course, only one example of the mold is shown, and the direction of mold splitting can be in any form, such as in the left-right direction or in the oblique direction. For example, in the case of a fishing line guide having two support legs 8, the upper die 51 may be divided into left and right.

After setting the prepreg 20A on the lower mold 52 in this way, the upper mold 51 is pressed against the prepreg 20A with heating so that the synthetic resin 20b of the prepreg 20A flows into the gap 70 (the lower mold 52 By pressing and deforming the portion of the prepreg 20A protruding from the cavity 52S of the prepreg 20A, as shown in FIG. The end portion of the prepreg 20A (frame) in the outer peripheral portion of the portion 7 is provided with a shock absorbing portion 80 having less reinforcing fibers 20a than other portions of the prepreg 20A (frame) or no reinforcing fibers 20a. A product 20A' is molded. In this case, the shock absorbing portion 80 has a dimension H1 (see FIG. 9B) along a direction Y (see FIG. 7) orthogonal to the stacking direction X of the laminated structure of the frame (prepreg sheet laminated structure) of 0.05 mm. It is set to ~0.2 mm. More specifically, the dimension H1 is set to 2% to 13% of the width dimension H2 (see FIG. 9) of the ring holding portion 7. As shown in FIG.

Next, the final product 20A' of such a frame 3 is subjected to detailed processing as required. This detailed processing corresponds to, for example, forming the shape of the fixing portion 5 into a curved surface so that it can be easily placed on the fishing rod, or polishing the end portion of the fixing portion so that it is easy to wind and tie the fishing rod. .

Next, the frame 3 (final product 20A') is surface-treated. For example, barrel processing is performed to remove burrs on the surface, and finish polishing is performed to the extent that the surface is glossy. As for the degree of polishing, it is possible to arbitrarily adjust the polishing agent, polishing time, etc., depending on the size, shape, material properties, etc. of the fishing line guide. By performing such barrel processing, it becomes possible to polish the frame 3 without cutting the reinforcing fibers, thereby stabilizing the strength and making it possible to provide a fishing line guide with an excellent appearance.

It should be noted that, when performing such a polishing process, it is preferable to polish so that the reinforcing fibers are partly exposed and the matrix resin is partly left on the surface of the frame 3 . By doing so, it is possible to further improve the gloss of the polished surface.

Next, a coating is formed on all or part of the frame 3 as required. For example, it is possible to apply a coating to improve the appearance or protect the frame body, or vapor-deposit metal or ceramics.

The frame 3 molded in this manner is shown in FIG. 9(b). As can be seen from comparison with the conventional frame 3A shown in FIG. 9A, the frame 3 of the present embodiment has an end portion (ring holding portion) along the direction orthogonal to the lamination direction of the prepreg lamination structure forming the frame 3A. The outer peripheral portion of the portion 7) has an impact absorbing portion 80 with less reinforcing fibers 20a than other portions of the frame 3 or without reinforcing fibers 20a (thus consisting only of the resin 20b). On the other hand, in the conventional frame 3A, reinforcing fibers 20a are present over the entire frame from end to end (to the side end faces of the frame), and the shock absorbing portions 80 are not provided at the ends thereof.

As described above, according to the present embodiment, the end portions of the frame 3 formed of prepreg are provided with the impact absorbing portions 80 having fewer reinforcing fibers 20a than other portions of the frame 3 or no reinforcing fibers 20a. Therefore, even if the fishing line guide 1 receives an impact from the side end surface of the frame 3, the resin 20b, which has higher impact absorption than the reinforcing fiber 20a, is the main part or consists only of the resin 20b. The impact energy can be absorbed well by the impact absorbing portion 80 . That is, due to the presence of the impact absorbing portion 80, the fishing line guide 1 of the present embodiment is more resistant to impact on the frame side end surface than the conventional fishing line guide in which the reinforcing fibers 20a are present over the entire frame from end to end of the frame 3A. High absorption rate. Therefore, it is possible to avoid the conventional inconvenience that the frame of the laminated structure is broken at the time of impact, causing delamination and leading to destruction.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, the fishing line guide may have various forms, such as one with two support legs, a 3D structure without steps, etc., and therefore corresponding prepregs can be used. Further, depending on the mounting position of the fishing rod, the bent portion may not be formed in the frame, and the prepreg forming the frame may have a single layer structure of woven fabric layers. Of course, a laminated structure as described above may be used, and a bent portion may be formed separately. In addition, as described above, if the prepregs that make up the frame are laminated and the reinforcing fibers are oriented in three or more directions when viewed from above, the weight can be reduced and the strength can be efficiently increased. However, the orientation direction of the reinforcing fibers of the prepreg constituting each layer and the lamination position thereof are not particularly limited, and can be appropriately modified. In this case, as described above, the outermost layer of the frame is preferably provided with a woven fabric layer so as to effectively prevent breakage.

In addition, in the above-described embodiment, the impact absorbing portion is provided only on the outer peripheral portion of the ring holding portion, but in addition to this, the impact absorbing portion may be provided on the supporting leg portion 8 and further on the fixing portion 5. do not have. In the above-described embodiment, the impact absorbing portion is formed by the flow of the synthetic resin due to the molding pressure during molding of the frame. The impact absorbing portion may be formed by fixing a separate member made of to the frame. In this case, the impact absorbing portion is preferably heat-sealed or heat-bonded integrally to the frame by press molding. In this case, it is preferable to interpose a primer having an adhesive action between the frame and the impact absorbing portion in order to increase the fixing strength.

1 fishing line guide 3 frame 6 guide ring 7 ring holders 20, 20A, 20A' prepreg 20a reinforcing fiber 20b synthetic resin 40 fishing rod 50 mold 51 upper mold (second mold)
52 Lower mold (first mold)
80 shock absorbing part

Claims (5)

The frame is mounted on the outer peripheral surface of the fishing rod and is composed of a frame formed of prepreg made of reinforcing fibers impregnated with synthetic resin, and has a ring holding portion to which a guide ring through which a fishing line is inserted is fixed. A fishing line guide,
The frame is formed by laminating a plurality of prepreg sheets, and is provided at an end portion of the frame along a flow direction of the synthetic resin due to molding pressure during molding of the frame, which is a direction perpendicular to the lamination direction. Has a shock absorbing part with less reinforcing fibers than the part of or without reinforcing fibers ,
The impact absorbing portion is positioned on the outer periphery of the ring holding portion, and has a width dimension along a direction perpendicular to the stacking direction of 2% to 13% of a width dimension of the ring holding portion. A fishing line guide. 2. The fishing line guide according to claim 1 , wherein the laminated prepreg sheets have 3 to 15 layers. 3. A fishing line guide according to claim 1, wherein said shock absorbing portion has a width of 0.05 mm to 0.2 mm. A fishing line guide according to any one of claims 1 to 3 , wherein the synthetic resin of the prepreg is a thermosetting resin or a thermoplastic resin. The frame is mounted on the outer peripheral surface of the fishing rod and is composed of a frame formed of prepreg made of reinforcing fibers impregnated with synthetic resin, and has a ring holding portion to which a guide ring through which a fishing line is inserted is fixed. In the manufacturing method of the fishing line guide,
A step of setting the prepreg having a laminated structure in a first mold, wherein the end portion of the prepreg along the direction orthogonal to the lamination direction of the laminated structure and the inner surface of the first mold. setting the prepreg in the first mold with a predetermined gap;
By pressing a second mold against the prepreg set in the first mold with heating, the synthetic resin forming the prepreg is made to flow into the gap, and the other part of the frame. A step of forming a shock absorbing portion with less reinforcing fibers or no reinforcing fibers at the end portion of the frame;
A manufacturing method comprising:

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