Fishing rod lower plug and fishing rod

Abstract

To provide a fishing rod lower plug making scratches difficult to be seen and suppressing deterioration in appearance thereof, and to provide a fishing rod.SOLUTION: A fishing rod lower plug includes: a lower plug body 12 attached to or detached from the end part of a fishing rod body; and a groove part 31 which is formed on the bottom part of the lower plug body 12 and into which a coin is inserted when screwed. The groove part 31 includes: an inlet part 32 exposed to the outside; and a depth side part 33 deeper than the inlet part 32. A groove width H2 of the depth side part 33 is narrower than a groove width H1 of the inlet part 32. Each of a flat cross sectional shape of the inlet part 32 and a flat cross sectional shape of the depth side part 33 is preferably formed in a slender rectangular shape.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a fishing rod bottom plug and a fishing rod. [Background technology]

[0002] A fishing rod bottom plug that can be detachably attached to the end of a fishing rod body is known (Patent Document 1). The fishing rod bottom plug has a groove formed at the bottom for inserting a coin, and is detachable by inserting a coin into the groove and rotating the coin to screw it in. By using coins that are easily available to users, no special tools or dedicated knobs are required, and the fishing rod bottom plug can be easily attached and detached from the fishing rod body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 2613868 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional fishing rod bottom plugs have a drawback in that the groove and the periphery of the groove are easily scratched because torque is applied to the groove by rotating the coin, and scratches on the fishing rod bottom plug can cause a problem in that the aesthetic appearance of the fishing rod is marred.

[0005] From this perspective, an object of the present invention is to provide a fishing rod bottom plug that can make scratches less visible and prevent deterioration of the aesthetic appearance, and a fishing rod. [Means for solving the problem]

[0006] In order to solve such problems, the present invention comprises a bottom plug body that is attached and detached by screwing onto the end of the fishing rod body, and a groove portion formed on the bottom of the bottom plug body into which a coin is inserted when the bottom plug body is screwed, the groove portion having an entrance portion exposed to the outside and a rear side portion that is further back than the entrance portion, and the groove width of the rear side portion is narrower than the groove width of the entrance portion.

[0007] The present invention is also characterized by comprising a fishing rod body and the fishing rod bottom plug according to any one of claims 1 to 6 which is attached to and detached from an end of the fishing rod body by screwing.

[0008] According to the present invention, most of the torque generated by rotating the coin inserted in the groove acts on the wall surface of the rear side, which is prone to being scratched. However, since the entrance is provided in front of the rear side, the scratches are difficult to see from the outside, and the deterioration of the aesthetic appearance can be suppressed. In addition, since there is no need to provide other members to make the scratches difficult to see, the deterioration of the aesthetic appearance can be prevented without increasing the number of parts.

[0009] The inlet portion and the rear portion may each have a planar cross-sectional shape that is an elongated rectangle.

[0010] According to the present invention, the cross-sectional shapes of the entrance and the rear side are both elongated rectangles, so scratches in the groove are difficult to see from the outside. Also, the cross-sectional shapes of the entrance and the rear side are close to the cross-sectional shapes of coins, so rattling can be prevented. This improves operability.

[0011] The groove may have an R-shape that conforms to the outer shape of the coin when viewed from the side.

[0012] According to the present invention, the coin inserted in the groove does not rattle, improving operability.

[0013] The groove width at the rear portion may be 1.50 to 1.90 mm, and the groove width at the entrance portion may be 1.95 to 2.30 mm.

[0014] According to the present invention, it is possible to provide a fishing rod bottom plug having grooves that correspond to the various coins currently in circulation in Japan.

[0015] Also, a drain hole communicating with the outside may be provided at the bottom of the groove at the rear side portion.

[0016] According to the present invention, water that has entered the groove can be easily drained.

[0017] The depth of the groove may be formed such that, when the coin is inserted, 40 to 60% of the diameter of the coin is inserted into the groove.

[0018] According to the present invention, the area of ​​the handle portion for the user's coins can be appropriately secured, thereby improving operability and allowing a sufficient torque to be applied to the fishing rod bottom plug.

[0019] Further, an opening on a short side of the inlet portion may be formed with an opening side step portion that is wider than the back side of the inlet portion.

[0020] According to the present invention, it is possible to prevent the short side of the opening of the groove from being scratched. Effect of the Invention

[0021] According to the present invention, it is possible to provide a fishing rod bottom plug that makes scratches less visible and prevents deterioration of the aesthetic appearance, and a fishing rod. [Brief description of the drawings]

[0022] [Figure 1] FIG. 1 is a side view of a fishing rod according to a first embodiment of the present invention. [Diagram 2] 1 is a perspective view of a fishing rod bottom plug according to a first embodiment of the present invention, as viewed from the outside. FIG. [Diagram 3] 1 is a perspective view of a fishing rod bottom plug according to a first embodiment of the present invention, viewed from the fishing rod body side. FIG. [Figure 4] FIG. 2 is a bottom view of the fishing rod bottom plug according to the first embodiment of the present invention. [Diagram 5] 1 is a side view of a fishing rod bottom plug according to a first embodiment of the present invention. FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI of FIG. 4. [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 5. [Figure 8] FIG. 2 is a cross-sectional view of the fishing rod bottom plug according to the first embodiment of the present invention before a coin is inserted into a groove portion thereof. [Figure 9] 4 is a cross-sectional view of the fishing rod bottom plug according to the first embodiment of the present invention after a coin has been inserted into the groove portion. FIG. [Figure 10] FIG. 4 is a cross-sectional view of a fishing rod bottom plug according to a second embodiment of the present invention. [Figure 11] FIG. 11 is a plan view of a groove portion of a fishing rod bottom plug according to a third embodiment of the present invention. [Figure 12] FIG. 11 is a cross-sectional view of the fishing rod bottom plug according to the third embodiment of the present invention after a coin has been inserted into the groove portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that each embodiment described below is merely one embodiment of the present invention and does not limit the present invention. In addition, each embodiment can be applied in appropriate combination.

[0024] [First embodiment] Fig. 1 is a side view of a fishing rod according to a first embodiment of the present invention. Fig. 1 shows the fishing rod 1 in an extended state. The fishing rod 1 comprises a fishing rod body 2 and a fishing rod bottom plug 11. The fishing rod body 2 is a telescopic rod, but the present invention may also be applied to a jointed rod. The fishing rod bottom plug 11 is detachably attached to the end 2a of the fishing rod body 2 at the base side by screwing.

[0025] As shown in Figs. 2 to 5, the fishing rod bottom plug 11 comprises a bottom plug body 12 and a protruding portion 14. The bottom plug body 12 has a generally cylindrical shape. A male thread 18 is formed on the side peripheral surface of the bottom plug body 12. The male thread 18 is a portion that is screwed into a female thread 38 (see Fig. 8) formed on the inner peripheral surface of the end portion 2a of the fishing rod body 2.

[0026] A groove 31 is formed in the bottom (bottom surface) 13 of the bottom plug body 12. In addition, a protruding portion 14 that protrudes radially outward is formed in the bottom 13 of the bottom plug body 12. The outer diameter of the protruding portion 14 is approximately the same as the outer diameter of the end portion 2a of the fishing rod body 2. The bottom portion 13 and the protruding portion 14 are portions that are exposed to the outside when the fishing rod bottom plug 11 is screwed onto the end portion 2a.

[0027] As shown in FIG. 3, a drain hole 34 that connects groove 31 to the outside is formed in the center of end face 15 opposite bottom portion (bottom surface) 13 of bottom plug body 12.

[0028] As shown in Figures 6 and 7, the groove 31 is a groove into which a coin is inserted when the end 2a of the fishing rod main body 2 and the fishing rod bottom plug 11 are screwed together. The groove 31 has an entrance portion 32 exposed to the outside and a rear portion 33 located on the rear side of the entrance portion 32. The cross-sectional shapes of the entrance portion 32 and the rear portion 33 are both elongated rectangles. The entrance portion 32 and the rear portion 33 each have a constant groove width, depth, and length.

[0029] On the long side of the groove 31, wall surfaces 33b, 33b rise from both edges of the bottom surface 33a of the back side portion 33. The bottom surfaces 32a, 32a of the inlet portion 32 are continuous from the ends of the wall surfaces 33b, 33b, respectively, and the bottom surface 32a protrudes outward on both sides. In addition, wall surfaces 32b, 32b rise from both edges of the bottom surface 32a of the inlet portion 32. The bottom surface 32a and the wall surfaces 32b form a step portion (long side step portion) provided on the long side of the groove 31. Note that, as shown in FIG. 6, in this embodiment, no step is provided on the short side of the groove 31, and the inlet portion 32 and the back side portion 33 are flush (the length M is constant).

[0030] As shown in FIG. 7, the groove width H2 of the rear side portion 33 is narrower than the groove width H1 of the entrance portion 32. The groove width H1 is preferably set to be larger than the thickness of the coin to be inserted. On the other hand, the groove width H2 is preferably set to be equal to or slightly larger than the plate thickness of the coin to be inserted. In other words, the groove width H1 is preferably a dimension with a slight margin for the thickness of the coin, and the groove width H2 is preferably a dimension that allows the coin to be fitted without rattling. The groove widths H1 and H2 are preferably, for example, 1.95 to 2.30 mm for the groove width H1 and 1.50 to 1.90 mm for the groove width H2, so as to correspond to current Japanese coins (1 yen coin, 5 yen coin, 10 yen coin, 50 yen coin, and 100 yen coin). The step between the entrance portion 32 and the rear side portion 33 may be set as appropriate, but is preferably, for example, 0.05 to 0.8 mm. Moreover, it is preferable to set the groove width H1 to, for example, about +0.5 mm relative to the width of the recommended coin, and it is preferable to set the groove width H2 to, for example, about +0.1 mm relative to the width of the recommended coin.

[0031] As shown in FIG. 6, the depth D and length M of the groove 31 are preferably formed so that when the coin is completely inserted, 40 to 60% of the diameter of the coin is inserted into the groove 31 (the length of the portion of the coin inserted into the groove 31 is 40 to 60% of the diameter). The depth D1 of the entrance 32 and the depth D2 of the rear part 33 are the same size, or the depth D1 is deeper. The depth D1 is preferably set so that the opening of the rear part 33 (around the step between the entrance 32 and the rear part 33) is difficult to see from the outside. The depth D2 is preferably set so that 10 to 30% of the diameter of the coin is inserted (the length of the portion of the coin inserted into the rear part 33 is 10 to 30% of the diameter). In other words, the depth D2 is preferably set so that the torque of the coin acts on the rear part 33. Considering the size of Japanese coins (details given later), it is preferable that depth D1 be a minimum of approximately 1.5 mm in order to make the step between rear portion 33 and entrance portion 32 inconspicuous, and a maximum of approximately 9.0 mm in order to ensure that the torque when turning the coin acts sufficiently on rear portion 33.

[0032] Next, the effects of the first embodiment will be described. Fig. 8 is a cross-sectional view of the bottom plug according to the first embodiment of the present invention before a coin is inserted into the groove. Fig. 9 is a cross-sectional view of the bottom plug according to the first embodiment of the present invention after a coin is inserted into the groove. Here, a case where the bottom plug 11 for fishing rods screwed into the end portion 2a of the fishing rod main body 2 is removed is illustrated.

[0033] As shown in Figs. 8 and 9, a coin C is inserted from the opening of the groove 31 and abutted against the bottom surface 33a of the rear side portion 33. At this time, the side surface of the coin C contacts the wall surfaces 33b, 33b of the rear side portion 33 or faces each other with a very small gap. Meanwhile, the side surface of the coin C faces the wall surfaces 32b, 32b of the entrance portion 32 with a gap. When the coin C is rotated, the torque received by the groove 31 acts on the wall surfaces 33b, 33b of the rear side portion 33, which has a narrow groove width, and is unlikely to act on the wall surfaces 32b, 32b of the entrance portion 32, which has a wide groove width. In this way, by inserting the coin C and rotating it with the user's fingers, the fishing rod bottom plug 11 can be attached and detached by screwing.

[0034] In this embodiment, as shown in Figure 9, when coin C is inserted to the deepest part, the outer edges of coin C (both edges in the upper and lower directions in Figure 9) are in contact with the opening ends 31a of groove portion 31, but the length M of groove portion 31 may be set so that there is a gap between the outer edges and the opening end 31a of groove portion 31.

[0035] Conventional fishing rod bottom plugs have grooves with a uniform width. In general, if the width of the groove is set to be the same as or slightly wider than the thickness of the coin, the coin will not rattle against the groove, making it easier to apply torque. However, this configuration makes it difficult to insert coins into the groove, which can lead to scratches or damage to the opening end 31a of the groove. On the other hand, if the groove width is made sufficiently large compared to the thickness of the coin, the coin will rattle, making it difficult to apply torque, and the coin may spin freely, causing damage to the groove.

[0036] In this regard, according to the fishing rod bottom plug 11 of this embodiment, the groove width H1 of the entrance portion 32 is slightly wider than the groove width H2 of the rear side portion 33, making it easier to insert the coin C and less likely to scratch the area around the opening of the groove portion 31 during insertion. Also, since the groove width H2 of the rear side portion 33 is narrower than the groove width H1 of the entrance portion 32, the coin C does not rattle in the rotational direction of the coin C and torque can be easily applied to the rear side portion 33.

[0037] In addition, when the coin C is rotated, the wall surfaces 33b, 33b of the rear side portion 33 are easily scratched, but the entrance portion 32 is not easily scratched. As a result, even when the coin C is rotated, the entrance portion 32 is not easily scratched. In addition, although the wall surfaces 33b, 33b of the rear side portion 33 are easily scratched, the provision of the inlet portion 32 in front of the rear side portion 33 makes the scratches less visible from the outside, thereby preventing deterioration of the aesthetic appearance. In addition, since there is no need to provide other members to make the scratches less visible, deterioration of the aesthetic appearance can be prevented without increasing the number of parts.

[0038] In addition, the planar cross-sectional shapes of the entrance portion 32 and the rear portion 33 may be appropriately set, but in this embodiment, they are both elongated rectangular shapes, so scratches in the groove portion 31 are difficult to see from the outside. In addition, the planar cross-sectional shapes of the entrance portion 32 and the rear portion 33 are close to the planar cross-sectional shape of the coin C, so rattling can be prevented. This improves operability.

[0039] Furthermore, according to this embodiment, since the groove bottom (bottom surface 33a) of the groove 31 is provided with the water drainage holes 34, water that has entered the groove 31 can be drained to the outside.

[0040] Furthermore, according to this embodiment, the groove 31 is formed so that when the coin C is inserted, 40 to 60% of the diameter of the coin C is inserted. This allows the area of ​​the handle of the coin C to be appropriately secured, improving operability and allowing a sufficient torque to be applied to the fishing rod bottom plug 11.

[0041] Incidentally, the current 1 yen coin has a diameter of 20.0 mm and a thickness of 1.45 mm. Similarly, the 5 yen coin has a diameter of 22.0 mm and a thickness of 1.55 mm or 1.60 mm depending on the year of issue. The 10 yen coin has a diameter of 23.50 mm and a thickness of 1.55 mm. The 50 yen coin has a diameter of 20.90 mm and a thickness of 1.75 mm. The 100 yen coin has a diameter of 22.60 mm and a thickness of 1.70 mm. Therefore, if the groove width H2 of the rear side portion 33 is 1.50 to 1.90 mm and the groove width H1 of the entrance portion 32 is 1.95 to 2.30 mm, it is possible to provide a fishing rod bottom plug 11 having a groove portion 31 with a groove width corresponding to various coins currently in circulation in Japan.

[0042] [Second embodiment] 10 is a cross-sectional view of a fishing rod bottom plug according to a second embodiment. In this embodiment, the same reference numerals as in the first embodiment are used for the same members as in the first embodiment, and detailed description thereof will be omitted. The bottom plug 11A of this embodiment differs from the first embodiment in that the groove portion 31A (corresponding to the groove portion 31 described above) has an R-shape that fits the outer shape of the coin C when viewed from the side.

[0043] Since the groove 31A has an R-shape that fits the outer shape of the coin C, it is possible to prevent the coin C from rattling when inserted into the groove 31A, thereby improving operability.

[0044] [Third embodiment] Fig. 11 is a plan view of the groove of the fishing rod bottom plug according to the third embodiment. Fig. 12 is a cross-sectional view of the fishing rod bottom plug according to the third embodiment after a coin has been inserted into the groove. In this embodiment, the same reference numerals as in the first embodiment are used for the same members as in the first embodiment, and detailed description thereof will be omitted.

[0045] As shown in Fig. 11 and Fig. 12, the fishing rod bottom plug 11B according to the third embodiment has a groove 31B. At the opening on the short side of the inlet 32, an opening side step 42, 42 is formed which is wider than the back side of the inlet 32. The opening side step 42 has a step bottom surface 32d and a step wall surface 32e. The step bottom surface 32d is continuous with the wall surface 32c on the short side of the inlet 32 ​​and protrudes outward beyond the wall surface 32c. The step wall surface 32e rises from the step bottom surface 32d. The opening side step 42 is a short side step provided on the short side of the groove 31B.

[0046] As shown in Fig. 12, when a coin C is inserted into the groove 31, the edge of the coin C abuts against the corner formed by the wall surface 32c and the step bottom surface 32d at the upper side of Fig. 12, but does not abut against the opening end 31a. On the other hand, the edge of the coin C abuts against neither the corner formed by the wall surface 32c and the step bottom surface 32d nor the opening end 31a at the lower side of Fig. 12.

[0047] According to the present embodiment described above, since the opening-side step portions 42, 42 are provided, when the coin C is inserted into the groove portion 31B, the coin C can be prevented from contacting the opening end 31a. This makes it possible to prevent scratches on the opening of the groove portion 31B and its surrounding area, which are easily noticeable from the outside. Although the coin C may come into contact with both corners when inserted to the deepest part of the groove 31B, in this embodiment, the coin C is set to come into contact with one of the corners and not the other. This prevents the corners from being damaged and allows the coin C to be inserted and removed smoothly.

[0048] 12, the long side step portion and the short side step portion are formed at different height positions in the groove portion 31B, but they may be formed at the same height position. In other words, the bottom surface 32a of the inlet portion 32 and the bottom surface 42a of the opening side step portion 42 may be formed at the same height position. Although the embodiment of the present invention has been described above, appropriate design changes are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0049] 1 Fishing rod 2 Fishing rod body 2a End part 11, 11A, 11B Lower fasteners for fishing rod 12 Lower fastener body 31, 31A, 31B Groove part 32 Inlet part 33 Inner side part 34 Drain hole 42 Opening side step part H1 Groove width H2 Groove width

Claims

1. A bottom plug body that is attached to and detached from the end of the fishing rod body by screwing it; a groove formed at the bottom of the bottom plug body into which a coin is inserted when the bottom plug body is screwed into the bottom plug; The groove portion is An entrance portion exposed to the outside; A deep side portion that is deeper than the inlet portion, The bottom plug for a fishing rod is characterized in that the groove width at the rear portion is narrower than the groove width at the inlet portion.

2. 2. The fishing rod bottom plug according to claim 1, wherein the inlet portion and the rear portion have a planar cross-sectional shape that is an elongated rectangle.

3. 2. The fishing rod bottom plug according to claim 1, wherein the groove portion has an R-shape that conforms to an outer shape of the coin when viewed from the side.

4. 2. The fishing rod bottom plug according to claim 1, wherein the groove width at the rear portion is 1.50 to 1.90 mm, and the groove width at the inlet portion is 1.95 to 2.30 mm.

5. 2. The fishing rod bottom plug according to claim 1, wherein the bottom of the groove in the rear portion has a drain hole communicating with the outside.

6. 2. The fishing rod bottom plug according to claim 1, wherein the depth of the groove is formed such that, when the coin is inserted, 40 to 60% of the diameter of the coin is inserted into the groove.

7. 3. The fishing rod bottom plug according to claim 2, wherein an opening side step portion is formed at an opening on a short side of the inlet portion, the opening side step portion being wider than a rear side of the inlet portion.

8. A fishing rod body, A fishing rod comprising: a fishing rod bottom plug according to any one of claims 1 to 7, which is attached to and detached from the end of the fishing rod body by screwing.

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