JP7618464B2 - Fishing guide frame and method for manufacturing fishing guide frame - Google Patents

Description

The present invention relates to a fishing guide frame and a method for manufacturing a fishing guide frame.

Conventionally, fishing guide frames that are fixed to the outer periphery of a fishing rod and hold a guide ring through which a fishing line is passed have been molded with a frame body made of a prepreg sheet in which reinforcing fibers are arranged in a specific direction (see, for example, Patent Documents 1 and 2).

JP 2020-137454 A JP 2020-80808 A

However, in fishing guide frames such as those shown in Patent Documents 1 and 2, for example, when manufacturing a reinforcing structure by integrating ribs into the frame body, there is a risk that the reinforcing fibers aligned in a specific direction may not flow sufficiently into the rib. This results in a shortage of reinforcing fibers in the resin inside the rib, and there is a problem in that the desired strength of the rib cannot be secured.

The present invention was made in consideration of these circumstances, and its purpose is to provide a fishing guide frame and a manufacturing method for a fishing guide frame that can improve the strength of the reinforcing ribs themselves and efficiently strengthen the entire fishing guide frame.

(1) The fishing guide frame of the present invention is a fishing guide frame that is fixed to the outer peripheral surface of a fishing rod and holds a guide ring through which a fishing line is inserted, and is characterized in that it comprises a frame body having a ring holding portion that holds the guide ring on its inner peripheral surface, and a reinforcing rib that protrudes from the frame body and is molded integrally therewith, and that the frame body and the reinforcing rib are molded from a fiber-reinforced resin that contains reinforcing fibers with irregular orientations.

According to the fishing guide frame of the present invention, when reinforcing ribs are provided protruding from the frame body, by using a fiber-reinforced resin containing reinforcing fibers with irregular orientations, the reinforcing fibers arranged with irregular orientations during manufacturing tend to flow into the reinforcing rib area. This makes it possible to increase the filling rate of the reinforcing fibers in the reinforcing rib, and improve the strength of the reinforcing rib itself. Therefore, the entire fishing guide frame can be efficiently reinforced.

(2) It is preferable that the fiber-reinforced resin contains reinforcing fibers of irregular length.

In this case, when reinforcing ribs are provided protruding from the frame body, by using a fiber-reinforced resin containing reinforcing fibers with irregular lengths as well as directions, the reinforcing fibers arranged with irregular directions and lengths during manufacturing can more reliably flow into the reinforcing rib area. This makes it possible to further increase the filling rate of reinforcing fibers in the reinforcing rib, improving the strength of the reinforcing rib itself.

(3) The reinforcing rib may be provided around the entire circumference of the ring holding portion.

In this case, the ring holder of the frame body is reinforced with reinforcing ribs, so the holding force of the guide ring by the ring holder can be increased. This prevents the ring holder from being damaged by the load of the fishing line via the guide ring that guides the fishing line.

(4) The frame body may have a support leg portion that extends away from the outer circumferential surface of the fishing rod and supports the ring holder, and the reinforcing rib may extend in the longitudinal direction of the support leg portion.

With this configuration, the support legs of the frame body are reinforced by reinforcing ribs extending in the longitudinal direction, providing reinforcement against the force received from the guide ring and increasing the support force of the ring holder.

(5) The fiber-reinforced resin may be a prepreg sheet made up of multiple layers, and the frame body and the reinforcing ribs may be formed by heating and pressurizing the prepreg sheets.

In this case, by providing multiple layers of prepreg sheets, the reinforcing rib area can be sufficiently filled with reinforcing fibers during manufacturing. In addition, the connection area between the frame body and the reinforcing rib can also be sufficiently reinforced.

(6) The manufacturing method of the fishing guide frame according to the present invention is a manufacturing method of the fishing guide frame described in any one of (1) to (5) above, characterized by having the steps of: setting a first mold having a recess for forming the convex shape of the reinforcing rib, and a second mold facing the first mold; placing a prepreg sheet having multiple layers of the fiber reinforced resin between the first mold and the second mold; heating the prepreg sheet, and bringing the first mold and the second mold close to each other to press the prepreg sheet against the first mold to apply pressure, thereby causing the prepreg sheet to flow inside the recess.

According to the manufacturing method of the fishing guide frame of the present invention, the manufactured fishing guide frame has the same effect as that of claim 1. That is, during manufacturing, at least the reinforcing fibers having irregular directions in the prepreg sheet are filled thoroughly into the entire recess of the first mold, so that the reinforcing rib has sufficient strength.

The fishing guide frame and the manufacturing method for the fishing guide frame according to the present invention can improve the strength of the reinforcing rib itself, and efficiently strengthen the entire fishing guide frame.

1 is a front view of a fishing guide frame according to an embodiment of the present invention. 1 is a perspective view of a fishing guide frame seen diagonally from the front. 1 is a perspective view of a fishing guide frame seen from diagonally rearward. 2 is a cross-sectional view taken along line AA of FIG. 1, showing a cross-sectional view of a ring holding portion. 4 is a cross-sectional view showing the state of a ring holding portion of the fishing guide frame during manufacturing. FIG. 1A to 1C are diagrams showing a manufacturing process of a fishing guide frame. 7 is a diagram showing the manufacturing process of the fishing guide frame following FIG. 6. 8 is a diagram showing the manufacturing process of the fishing guide frame following FIG. 7. 2 is a cross-sectional view taken along line BB of FIG. 1, showing a longitudinal cross-sectional view of the fishing guide frame. 11A to 11C are diagrams showing the manufacturing process for the curved portion of the fishing guide frame.

Below, an embodiment of the fishing guide frame and the manufacturing method of the fishing guide frame according to the present invention will be described with reference to the drawings. Note that in each drawing, the scale of each component may be appropriately changed as necessary to make each component large enough to be visible.

As shown in Figures 1 and 2, the fishing guide frame 1 of this embodiment is fixed to the outer circumferential surface of a fishing rod (not shown) and is configured to hold a guide ring 3 (indicated by a two-dot chain line in Figure 1) through which the fishing line is inserted.

As shown in Figure 3, the fishing guide frame 1 comprises a frame body 10 and a reinforcing rib 20 that protrudes from and is integrally molded with the frame body 10. As shown in Figure 1, the frame body 10 has a ring holder 11 that holds the guide ring 3 on its inner peripheral surface, and a support leg 12 that supports the ring holder 11 by extending in a direction away from the outer peripheral surface of the fishing rod.

Here, Fig. 1 is a front view of the fishing guide frame 1 fixed to the fishing rod, with the longitudinal direction of the support leg 12 (hereinafter referred to as the axial direction X) coinciding with the axial direction of the fishing rod, as viewed from the butt to the tip. In the fishing guide frame 1, the direction facing the butt is referred to as the front side or forward, and the direction facing from the butt to the tip is referred to as the rear side or rear.

The ring holders 11 are arranged at a predetermined interval in the rod axis direction on the outer circumferential surface of the fishing rod. The ring holders 11 hold the guide ring 3, which guides the fishing line, on their inner circumferential surface at a position away from the outer circumferential surface of the fishing rod. The ring holders 11 are formed in an annular shape and have a circular holding hole 11a that holds the guide ring 3. The ring holders 11 rise forward from one end of the support leg 12 via a curved portion W (a second curved portion Wb, described later) relative to the outer circumferential surface of the fishing rod.

The guide ring 3, which is held coaxially in the holding hole 11a, is formed in an annular shape, and its inner circumferential guide surface is made of a material that provides low sliding resistance to the fishing line, such as titanium, aluminum, SUS, or ceramics. The guide ring 3 is integrally formed with the fiber-reinforced resin 14 (described later) that forms the frame body 10.

The fishing guide frame 1 is fixed to the outer periphery of the fishing rod with the ring holder 11 facing the rod tip relative to the support leg 12. At this time, the support leg 12 extends in one direction (axial length direction X), and the axial length direction X coincides with the rod axis direction of the fishing rod.

The contact surface 12a (see Figures 2 and 3) on the back side of the support leg 12 is placed on the outer periphery of the fishing rod and is fixed thereto by a line fastener, adhesive, etc. The support leg 12 has approximately the same width dimension along the axial direction X.

As shown in Figures 3 and 4, the reinforcing ribs 20 are provided over the entire rear surface 10b of the frame body 10. In this embodiment, the reinforcing ribs 20 are provided only on the rear surface 10b of the frame body 10, but are not limited to the rear surface 10b, and may be provided on the front surface 10a (see Figure 1) of the frame body 10, or on both the front surface 10a and the rear surface 10b.

As shown in FIG. 3, the dimensions of the reinforcing rib 20 include an outer peripheral rib 21 provided along the outer peripheral edge of the ring holding portion 11 and the support leg 12, an inner peripheral rib 22 provided along the inner peripheral edge where the holding hole 11a of the ring holding portion 11 is formed, and an intermediate rib 23 provided between a pair of left and right outer peripheral ribs 21 arranged on the support leg 12. The intermediate rib 23 extends to the ring holding portion 11 side and is connected to the inner peripheral rib 22. The reinforcing rib 20 is formed into a rectangular cross section with a height of about 0.1 to 0.5 mm and a width of about 0.3 to 0.7 mm, more specifically, a height of 0.3 mm and a width of 0.5 mm, although this is related to the overall size of the frame body 10.

As shown in FIG. 5, the frame body 10 and the reinforcing ribs 20 are formed from fiber-reinforced resin 14 containing reinforcing fibers 13 of irregular direction and length. The fiber-reinforced resin 14 is a sheet-like prepreg sheet 15 (see FIG. 6 to FIG. 8) that is laminated in multiple layers. The reinforcing fibers 13 are carbon fibers, glass fibers, etc. As described above, the reinforcing fibers 13 in this embodiment do not have a constant fiber direction or length, but have irregular fiber orientation and length. The fiber-reinforced resin 14 is configured by impregnating the reinforcing resin 13 with a thermosetting resin (e.g., epoxy resin) or a thermoplastic resin (e.g., nylon) as a matrix resin. The frame body 10 and the reinforcing ribs 20 are formed by heating and pressurizing the prepreg sheet 15 by pressing.

The curved portion W formed in the frame body 10 has a first curved portion Wa formed on the outer periphery of the ring holding portion 11 and a second curved portion Wb formed at the boundary between the ring holding portion 11 and the support leg portion 12. The first curved portion Wa is formed by a curved surface that follows the ring shape of the ring holding portion 11.
The first curved portion Wa and the second curved portion Wb are also formed from a fiber reinforced resin 14 having reinforcing fibers 13 with irregular directions and lengths. Here, in this embodiment, the first curved portion Wa and the second curved portion Wb are set to a curved surface having one radius of curvature.

Next, a method for manufacturing the above-mentioned fishing guide frame will be specifically described with reference to the drawings.
As shown in Figures 6 to 8, the fishing guide frame 1 of this embodiment is formed of a fiber-reinforced resin 14, in which the frame body 10 and the reinforcing ribs 20 are made of prepreg sheets 15 having reinforcing fibers 13 with irregular directions and lengths, as described above. In preparation for manufacture, the prepreg sheets 15 are cut into a predetermined shape and stacked to form multiple layers. The number of layers of the prepreg sheets 15 to be stacked can be set as appropriate. The number of layers of the prepreg sheets 15 is determined according to conditions such as the load acting on the fishing guide frame 1 during use and the bending characteristics of the fishing rod.
The prepreg sheet 15 used here is a general reinforced plastic molding material in which reinforcing fibers 13 such as carbon fibers or glass fibers are evenly impregnated with a thermosetting resin such as epoxy and then heated or dried to a semi-hardened state.

As shown in FIG. 6, first, a first mold 41 having a recess 41a for forming the convex shape of the reinforcing rib 20 and a second mold 42 that can be brought close to the first mold 41 are set.
The mold 4 used has, for example, a first mold 41 and a second mold 42 divided into upper and lower halves. A prepreg sheet 15 consisting of a plurality of laminated sheets is set between the first mold 41 and the second mold 42. A mold release agent is applied to the first mold 41 and the second mold 42. The direction in which the first mold 41 and the second mold 42 are divided is not limited to the vertical direction, and they may be divided in the left-right direction or in an oblique direction depending on the shape of the fishing guide frame 1.

Next, as shown in FIG. 7, multiple laminated prepreg sheets 15 are placed on the formwork surface of the first mold 41. At this time, the guide ring 3 shown in FIG. 1 is also set in the first mold 41.

After the prepreg sheet 15 is set in the first mold 41, the prepreg sheet 15 is heated and the second mold 42 is pressed against the prepreg sheet 15 to form it under pressure. As a result, the prepreg sheet 15 is compressed by a compressive force in the thickness direction (pressure direction), and the prepreg sheet 15 flows into the inside of the recess 41a of the first mold 41. At this time, as shown in FIG. 5, the direction and length of the reinforcing fibers 13 contained in the flowing fiber reinforced resin 14 are not constant but irregular, so the entire recess 41a is filled. In addition, the guide holding part 11 and the guide ring 3 are heat fused or heat bonded by heating and pressure.

Also, as shown in FIG. 10, a concave curved portion 41b is formed at the position where the first curved portion Wa and the second curved portion Wb of the frame body 10 are formed in the first mold 41. A convex curved portion 42a is formed in the second mold 42 at a position opposite the concave curved portion 41b of the first mold 41. Then, after setting a plurality of laminated prepreg sheets 15 on the mold surface of the first mold 41, the prepreg sheets 15 are heated and the second mold 42 is pressed against the prepreg sheets 15 to perform pressure molding. As a result, the prepreg sheets 15 are compressed by receiving a compressive force in the thickness direction (pressure direction), and the prepreg sheets 15 flow into the concave curved portion 41b of the first mold 41. At this time, as shown in FIG. 5, the direction and length of the reinforcing fibers 13 contained in the flowing fiber reinforced resin 14 are not constant but irregular, so that the entire concave curved portion 41a is filled. Furthermore, the reinforcing fibers 13 are also filled into the convex curved portion 42a of the second mold 42, and the curved portion W is molded with the reinforcing fibers 13 evenly distributed throughout the entire curved portion W.

Then, the first mold 41 and the second mold 42 are demolded and the molded product is taken out of the molds, thereby producing the fishing guide frame 1 as shown in Figures 1 to 3.

Next, the operation of the fishing guide frame configured in this manner and the method for manufacturing the fishing guide frame will be explained in detail with reference to the drawings.

In this embodiment, as shown in FIG. 5, when the reinforcing ribs 20 are provided protruding from the frame body 10, the fiber-reinforced resin 14 containing the reinforcing fibers 13 of irregular directions and lengths is used, so that the reinforcing fibers 13 flow into and fill the reinforcing rib 20 during manufacturing. This increases the filling rate of the reinforcing fibers 13 in the reinforcing rib 20, improving the strength of the reinforcing rib 20 itself. This allows the entire fishing guide frame 1 to be efficiently reinforced.

In addition, in this embodiment, as shown in FIG. 3, the ring holding portion 11 of the frame body 10 is reinforced by the reinforcing rib 20, so the holding force of the guide ring 3 (see FIG. 1) by the ring holding portion 11 can be increased. This prevents the ring holding portion 11 from being damaged by the load of the fishing line via the guide ring 3 that guides the fishing line.

In addition, in this embodiment, the support legs 12 of the frame body 10 are reinforced by reinforcing ribs 20 extending in the tension axis direction X, which provides reinforcement against the force received from the guide ring 3 and increases the support force of the ring holder 11.

In addition, in this embodiment, as shown in Figures 6 to 8, the fiber-reinforced resin 14 is laminated in multiple layers to form the prepreg sheet 15, and the frame body 10 and reinforcing ribs 20 are formed by heating and pressurizing the prepreg sheet 15. By providing multiple layers of prepreg sheet 15 in this way, the reinforcing fiber 13 can be sufficiently filled in the reinforcing rib 20 during manufacturing. In addition, the connection between the frame body 10 and the reinforcing rib 20 can also be sufficiently reinforced.

The fishing guide frame according to this embodiment, configured as described above, and the manufacturing method for the fishing guide frame, can improve the strength of the reinforcing rib 20 itself, and efficiently strengthen the entire fishing guide frame 1.

Although the embodiments of the fishing guide frame and the manufacturing method for the fishing guide frame according to the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. The embodiments and their modifications include, for example, those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are within the scope of equivalents.

For example, in this embodiment, the reinforcing fibers 13 contained in the fiber-reinforced resin 14 have irregular fiber directions and lengths, but the fibers may have a fixed length. In other words, the fiber-reinforced resin may contain reinforcing fibers with at least irregular directions.

In addition, in the above embodiment, the reinforcing ribs 20 are configured to include an outer peripheral rib 21, an inner peripheral rib 22, and an intermediate rib 23, but the specific configuration of the reinforcing ribs 20, such as their cross-sectional shape, extension direction, and arrangement, is not limited. For example, the reinforcing ribs 20 may be provided only on the ring holding portion 11 or only on the support leg portion 12.

REFERENCE SIGNS LIST 1 fishing guide frame 3 guide ring 10 frame body 10a front surface 10b rear surface 11 ring holding portion 11a holding hole 12 support leg portion 20 reinforcing rib 41 first mold 41a recess 41b concave curved portion 42 second mold 42a convex curved portion X axis length direction W curved portion Wa first curved portion Wb second curved portion

Claims (4)

A fishing guide frame that is fixed to an outer circumferential surface of a fishing rod and holds a guide ring through which a fishing line is inserted,
a frame body having a ring holding portion that holds the guide ring on an inner peripheral surface thereof;
a reinforcing rib that protrudes from the frame body and is integrally formed with the frame body and is provided around the entire periphery of the ring holding portion ,
The fishing guide frame, in which the frame body and the reinforcing ribs are molded from a fiber-reinforced resin containing reinforcing fibers having irregular directions. The fishing guide frame of claim 1, wherein the fiber-reinforced resin contains reinforcing fibers of irregular length. The frame body has a support leg portion that extends in a direction away from the outer circumferential surface of the fishing rod and supports the ring holding portion,
3. The fishing guide frame according to claim 1, wherein the reinforcing rib extends in a longitudinal direction of the support leg. The fiber reinforced resin is a prepreg sheet laminated in plurality,
4. The fishing guide frame according to claim 1, wherein the frame body and the reinforcing ribs are formed by applying heat and pressure to the prepreg sheet.

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