JP2003070386A - Butt plug enabling discharge of foreign material such as sand in fishing rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate various defects of each rod member of a fishing rod caused by foreign materials such as sand and prevent the intrusion of sand, etc., into the screw of a butt rod or butt plug or the joint of the butt plug and eliminate the troubles in these parts by preventing the adhesion of foreign materials such as sand intruded into the rod to the contacting face 10S of the butt plug and automatically and quickly discharging the foreign materials such as sand intruded into the rod during fishing. SOLUTION: The butt plug is provided with a discharging hole 1 composed of a rod receiving part 10, a dropping port 11, a reverse motion checking part 2, a bottom part 30 and an inner wall part 40 of the cylinder.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a butt plug for a swing-out type fishing rod.

[0002]

2. Description of the Related Art <No. 1> The conventional swing-out type fishing rod has no technique for removing foreign matter such as sand that has entered the inside of the rod. In detail, there is no conventional technology for a butt plug that automatically and quickly removes foreign matter such as sand that has entered the rod receiving part of the butt plug during fishing.

<No. 2> Conventional swing-out type fishing rods cause various rod defects due to foreign matter such as sand that has penetrated into the inside of the rod.

<Part 3> This problem is particularly serious for movable rods, which have recently been in high demand. The movable rod is used for ayu rods, amago rods, etc., and the rod length can be adjusted on the assumption that the expansion and contraction of specific rods such as the tail rod can be repeated tens or hundreds of times in one fishing line. It is a pole.

Hereinafter, a supplementary explanation will be given on the above. <Regarding the shape of the rod receiving portion of the conventional buttocks> As shown in Fig. 1, generally, the rod receiving portion (X) of the conventional buttocks is formed in a flat shape, and drainage of about 2 mm to 5 mm is made on this. It is a general shape that one hole (or called an air vent hole) (Y) is provided. Even rod holders with an exceptional shape other than this are not provided with holes for promptly removing foreign matter such as sand.

<Route of entry of foreign matter such as sand> As shown in FIG. 1, the route of entry of foreign matter such as sand from the outside into the inside of the rod is from the water drain hole (Y) and from each rod tip (Z). There is.

The case of entering through the water drain hole (Y) is generally due to landing of the bottom plug (U) and landing of the bottom plug (U). In the former case, the buttocks are submerged in water, and water suddenly flows into the rod through the water drain hole, and foreign matter such as sand is entrained due to this water flow. This is particularly noticeable in muddy water and when used in sandy areas. The latter is mainly due to the pushing of the butt plug against the ground by the leaning of the rod in the process of storing the rod, extending the rod, exchanging gimmicks, and after taking in. This is particularly remarkable when using a long rod such as an ayu rod or when using it on a wet sandy land.

The case of entering from each rod tip (Z) occurs when the extended rod placed on the sandy ground is stored, when the water is washed on site, or when the front plug with foreign matter such as sand is closed. It is a thing.

<Regarding the place where foreign matter such as sand that has entered is retained>
FIG. 2 shows a place where foreign matter such as sand that has entered the inside of the rod from the outside generally stays. The cause of intrusion is water flow (Y direction, Z direction), pressing (Y direction), drop (Z direction), etc., and the invading substance is generally attached to the rod receiving portion (X) of the conventional buttocks. .

After that, foreign matters such as sand inside the rod that have been left without being washed with water are scattered and adhered to various places of the rod by carrying the rod or fishing, and during the rod extending operation during this period, each rod has a node section. Usually, it is brought in and leads to various node defects, but it is also normal for the foreign matter such as sand scattered and adhered around the rod to repeatedly drop into the rod receiving portion (X) many times during this period.

<Induction of various node defects by foreign matter such as sand> FIG. 3 shows that foreign matter such as sand attached to the rod receiving portion (X) is
This figure shows the mechanism in which each rod is brought into the rod joint by storing and extending the rod. FIG. 3 (1) shows a state in which the inner rod (W) is in contact with the rod receiving portion (X) in which foreign matter such as sand is retained due to the storing operation and the drop of the rod. Figure 3
(2) is due to contact, or due to swinging or vibration of the rod,
This is a factor showing that foreign matter such as sand is transferred to the inner rod (W) and is taken into the rod joints as it is by the next extension operation. That is, what is shown in FIG. 3 shows a mechanism in which foreign matter such as sand attached to the rod receiving portion (X) is easily taken into each rod joint.

FIG. 4 shows a double-layered bottom plug used to prevent the inflow of foreign matter such as sand, but this intermediate cavity (T) has the drawback that foreign matter such as sand tends to accumulate. Therefore, there is a possibility that foreign matter such as sand suddenly pops out inside the rod during use.

Foreign matter such as sand that once invades the inside of the rod is not provided in the conventional buttocks, because there is no technique for eliminating them during fishing.
Unless the rod is washed with decomposed water, the possibility of being continuously brought into each rod joint is included. In addition, even a foreign particle such as a single grain of sand has the possibility of producing the same defect many times.

<Induction of defects other than knots by foreign matter such as sand> Conventional butt plugs allow the foreign matter such as sand to remain in the rod receiving part (X) for a long time, thereby allowing the butt rod or the screw part of the butt plug to be retained. Or, it creates an opportunity to enter the joint of the buttocks.

[0015]

SUMMARY OF THE INVENTION The present invention solves the problems that have been touched so far in the prior art section. That is, the present invention prevents foreign matter such as sand that has entered the inside of the rod from adhering to the rod receiving portion (X), and automatically removes foreign matter such as sand that has entered the inside of the rod during fishing. It is to eliminate them quickly.

As a result, foreign matter such as sand is prevented from being taken into each rod joint and various defects in each rod joint caused by foreign matter such as sand are eliminated. Further, foreign matter such as sand is prevented from entering the threaded portion of the butt rod or the butt plug, or the mating portion of the butt plug, and eliminates defects in these parts.

The present invention is used for a conventional buttocks. It can be used together without obstructing the conventional functional purpose of the conventional butt plug, such as the function of mitigating external shock, the function of freely fitting and removing from the rod body, the function of draining water, and the function of preventing the inflow of foreign matter such as sand.

According to the present invention, a function of freely fitting and removing is provided in a part of the forming portion, facilitating the washing of the inside of the butt plug with water, and making it possible to replace parts such as wear and tear.

[0019]

The present invention utilizes the following three elements to remove foreign matter such as sand that has entered the inside of the rod during fishing.
It eliminates automatically and quickly.

<Element 1> The technique of the present invention. In order to facilitate the description, the technical description of the present invention that enables various shapes is firstly limited to the basic shape that is a typical example. After a brief description of the basic shape, this is divided into each position and each is explained.

<Element 2> Shaking that occurs during fishing,
Vibration. Shaking, vibration, shaking and vibration generated during fishing operations such as transfer, gimmick replacement, bait and decoy change, fishing preparation, etc., shaking and vibration transmitted from underwater thread and wind, or the force of water entering the rod Is. In the following text, the description of element 2 refers to this.

<Element 3> Gravity.

<About the technology of the present invention. Outline of Basic Shape> FIG. 5 shows the basic shape of the present invention. The present invention has an exclusion hole (1) for removing foreign matters such as sand as a main part,
It is provided in the bottom plug. The shape of the exclusion hole (1) has a rod receiving portion (10) on the upper side, a drop opening (11), a retrograde prevention portion (2) on the middle stage, and a bottom portion (30) on the lower side, and a cylinder surrounding them. It comprises an inner wall portion (40). In addition, the rod receiving portion (10) and the retrograde prevention portion (2) are provided with a function of being freely detachable.

<Regarding the basic shape above the exclusion hole (1)>
As shown in FIG. 5 and FIG. 7, the basic shape above the exclusion hole (1) has several convex cross-sections radially from the center line (O) of the exclusion hole (1) at equal intervals, or , The rod receiving portion (10) in which a dozen (four in this basic shape example) are arranged. The rod receiving portion (10) and the cylindrical inner wall portion (4
Inside the 0), naturally, there is a wide and wide mouth (1
1) is formed. The portion of the rod receiving portion (10) that contacts the bottom of the inner rod (W) is called the contact surface (10S).

<About the above-mentioned purpose of the exclusion hole (1)> In the above-mentioned sentence, several convex cross-sections are formed radially from the center line (O) of the exclusion hole (1) at equal intervals, or,
What is described as a rod receiving part (10) with a dozen or more arranged is
The shape is for receiving the inner rod (W), which is the original purpose of the rod receiving portion. In addition, it is a shape for excluding foreign matter such as sand, other than the rod. Further, regarding the removal of foreign matter such as sand, if added, the contact surface (10S) is narrowed to prevent foreign matter such as sand from adhering to the contact surface (10S). This is a shape for preventing foreign matter such as sand from transferring from the contact surface (10S) to the bottom of the inner rod (W) and adhering thereto. What is described as a plurality of wide mouths (11) is a shape for promptly removing foreign matter such as sand.

<Regarding the basic shape of the exclusion hole (1) middle stage>
As shown in FIGS. 5 and 6, the basic shape of the middle stage of the exclusion hole (1) is composed of the retrograde prevention part (2). The retrograde prevention section (2) has several, or more than ten (16 in this basic shape example) within the circumference of the cylindrical inner wall section (40) surrounding it.
Wide-mouthed entrances (2 each with the largest possible area)
It is divided into 1) and forms a narrow mouth outlet portion (22) which is narrowed as narrow as possible so that foreign matters such as sand can pass through the mouth as it goes downward and does not become clogged. It is composed of a back wall portion (23) which is a sloped wall and a front surface wall portion (24) which is located between the both mouths.

<Regarding the Purpose of the Middle Stage of the Exclusion Hole (1)> In the above sentence, the wide-mouthed entrance portion (2 having the largest possible area)
What is described as 1) is a shape for discharging foreign matter such as sand to the bottom portion (30). What is described as the narrow-mouthed outlet portion (22) narrowed down as narrow as possible is a shape for making it difficult for foreign matter such as sand discharged to the bottom portion (30) to return to the rod receiving portion (10). What is described as the back wall part (23), which is a sloped wall located between both mouths, is a shape for making it difficult for foreign matter such as sand to reach the narrow mouth outlet part (22),
The shape is such that, together with the narrow outlet section (22), foreign matter such as sand is further difficult to return to the rod receiving section (10). What is described as division is that the length of the surface wall portion (24), that is, the distance from the wide mouth inlet portion (21) to the narrow mouth outlet portion (22) is shortened, and an angle that facilitates the discharge is created, so that the sand can be quickly removed. It has a shape for discharging foreign matter.

<Supplementary explanation on the importance of the divided shape and the retrograde prevention section (2). Part 1> Temporarily, the rod receiving part (1
When the rod is used without removing the foreign matter such as sand discharged from 0), the foreign matter such as sand scatters and attaches to the rod again and again, and the removing action performed in the rod receiving part (10) It turns into something that has no meaning. That is, the main points relating to the exclusion capacity of the present invention are how quickly foreign matter such as sand can be removed from the rod receiving part (10),
It is how reliably foreign matter such as sand can be isolated from the rod receiving portion (10), and the divided shape (quick removal) and the retrograde prevention portion (reliable isolation) of the present invention are essential to the present invention.

<Supplementary explanation on the importance of the divided shape and the retrograde prevention section (2). Part 2> The effective use method of the present invention is to prevent foreign matter such as sand, which is an object to be excluded, from entering the inside of the rod. The retrograde prevention part (2) has a drain hole (Y)
It has a function of preventing foreign matter such as sand from entering the inside of the rod, which is important for the present invention.

<Lower exclusion hole (1) and inner wall of cylinder (40)
FIG. 8 shows an extracted view of the bottom portion (30) below the exclusion hole (1) and the cylindrical inner wall portion (40). The bottom portion (30) is an inclined surface that connects the lower end of the cylindrical inner wall portion (40) and the drainage hole (Y) in the lower direction. The cylindrical inner wall portion (40) is a cylindrical inner peripheral wall portion of the exclusion hole (1).

<Regarding the purpose of the lower portion of the exclusion hole (1) and the inner wall of the cylinder (40)> In the above description, what is described as an inclined surface is a direction in which a foreign substance such as sand that has fallen and scattered on the bottom portion (30) is in a low inclination direction. It is a shape for collecting in. In the above description, the description that the lower end of the cylindrical inner wall portion (40) is connected to the drainage hole (Y) located in a lower direction than this is a shape for excluding collected foreign matters such as sand to the outside. In addition, a funnel shape is formed together with the drain hole (Y) to facilitate washing of water inside the exclusion hole (1). In the above description, what is described as a cylindrical shape is a shape that facilitates washing with water inside the exclusion hole (1).

The matter of the freely removable function described in the paragraph number 0018 is left to the item of the practical form of the invention.

[0033]

In the means for solving the problems of the preceding paragraph, the present invention has been described by narrowing down to the basic shape, but in this item, a detailed explanation will be given throughout the present invention. In addition, an example is also performed in this item. The explanation method of the present invention is to divide the exclusion hole (1) at each position and explain each of them, as in the case of the means for solving the above problem. Further, the explanation procedure is performed sequentially from above the exclusion hole (1) as in the previous section.

First, the contact surface (10S) will be explained above the exclusion hole (1). <Role and Shape of Contact Surface (10S) as Rod Receiving> The contact surface (10S) of the rod receiving portion (10) has the following roles and shapes related to the receiving function of the inner rod (W). . <No. 1> Inner pole (W) when storing and dropping the pole
Does not come out between the rod receiving portions (10) and does not easily fall between the rod receiving portions (10), and reliably stops at the contact surface (10S). Therefore, the surface (10S) that contacts the bottom of the inner rod (W) has a portion that surely overlaps when the rod is stored or dropped. <Part 2> When the rods are stowed, dropped, etc., all parts of the “certainly overlapping portion” are balanced without burdening only a specific portion of the “certainly overlapping portion”. It receives a stable buffering effect. Therefore,
This "certainly overlapping portion" is, for example, periodic or
It is balanced and balanced. <Part 3> When storing and dropping a rod, all the inside rods (W) with different circumferences are targeted, and the above requirements (No. 1, No. 2) are met. Corresponding. Therefore, this "reliably overlapping part" is the exclusion hole (1).
Starting from the center line (O) of the above, it is arranged so as to match the circumference of each inner rod (W).

<Width of contact surface (10S)> Amount of foreign matter such as sand adhering to the contact surface (10S) of the rod receiving portion (10), and foreign matter such as sand from the contact surface (10S) inside the rod. When the momentum (element 2) related to this is constant, the contact surface (10S) is the entire area of the exclusion hole (1) (circle with the inner wall 40 of the cylinder as the circumference). ), The structure of the rod receiving part (10) is the original purpose of the butt plug, as long as it can withstand the impact of the inner rod (W) being stored and dropped, etc. 10S) is narrowed to prevent foreign matter such as sand from adhering to this portion and prevent foreign matter such as sand from transferring and adhering to the inner rod (W).

<Regarding the size of the drop port (11)> The drop port (11) has the ability to remove foreign matters such as sand when the momentum (element 2) related to this is constant. Whole hole (1) (area of circle with the inner wall 40 of the cylinder as the circumference)
Since it is proportional to the area occupied by the area, the structure of this drop port (11) should be wide and sandy as long as it can withstand the impact of the inner rod (W), the storage of the inner rod (W), etc. Etc. to eliminate foreign matter.

<Regarding the Shape of the Rod Receiving Portion (10)> The shape of the rod receiving portion (10) is the requirements for the rod receiving function of the paragraph number 0034, paragraph number 0035, and paragraph number 003.
As a shape that satisfies the requirement for the function of eliminating foreign matter such as sand of FIG.
Is used. The contact surface (10S) shown in FIG. 9 is made narrow so that foreign matter such as sand can be easily removed as long as the inner rod (W) can withstand the impact when it is stored or dropped. Side view (10E) shown in FIG.
The purpose is to quickly guide foreign matter such as sand to the outlet of the drop port (11) and prevent residual foreign matter such as sand from adhering. For this reason, this shape avoids obstacles that are prone to foreign matter such as sand such as upward protrusions and grooves, long protrusions and deep grooves, and rough surfaces, and this line connecting the contact surface (10S) and the bottom surface (10F) , Vertical, inclined, arc, step, etc., or a combination thereof. The bottom surface (10
The size of F) corresponds to the degree of impact when the inner rod (W) is stored or dropped. Therefore, when used for a rod with a light impact, the contact surface (10S) and bottom surface (10F)
The size of the sand is the same, and the function of eliminating foreign matter such as sand is prioritized. When using a rod with a high degree of impact, the bottom surface (1
The width of 0F) is made wider than the contact surface (10S) to the extent that it does not hinder the function of removing foreign matter such as sand, so that the buffering action during storage is stable.

<Other Embodiments of Contact Surface (10S) and Drop Port (11)> FIG. 10 shows a shape other than the basic shape of the contact surface (10S) (radially arranged at equal intervals) and the drop port (11). 1
1) An example showing another shape. A large number of various shapes are possible, so only a part of this is shown.

<Other Embodiment of Rod Receiving Section (10)> FIG.
Is an embodiment showing a convex cross-sectional shape other than the basic shape of the rod receiving portion (10). A large number of various shapes are possible, so only a part of this is shown.

<Material of Rod Receiving Section (10)> The material used for the rod receiving section (10) has the following roles. It protects the inner rod (W) from being damaged or deformed against the impact such as storage and drop. The rod receiving portion (10) is not damaged or deformed due to the storage of the inner rod (W) or the impact such as dropping.

<Material composition of the rod receiving part (10)>
The material configuration of the rod receiving portion (10) will be described using the example of FIG. 12 as satisfying the requirements of the preceding paragraph.
The example shown in FIG. 12 (a) uses a conventionally used rod receiving part material (H). Figure 12 (H) (T)
In the example of (te), the buffer material (I) is used above and the general material (G) is used below. Mainly, the upper cushioning material (I) absorbs shocks such as storage and drop, and the lower general material (G) strengthens the rod receiving portion (10). In the example of FIG. 12 (g), an elastic material (L) is used between the upper rod receiving member material (K) used conventionally and the lower general material (M). The elastic material (L) mainly responds to shocks such as storage and drop, and the upper rod receiving portion material (K) that has been conventionally used is movable up and down. Further, the rod receiving portion is reinforced with the lower general material (M).
The general materials (G) and (M) are the conventional stopper materials, or all hard materials such as metal, ceramics, synthetic resin processed products, or fluorine processing, silicon processing, It has been subjected to enamel processing and other processing that makes it difficult for foreign matter such as sand to adhere. This general material (G) (M) is
The present invention is not limited to the rod receiving portion (10), and it is desirable to use it for the exclusion hole (1) of the present invention in general.

From this paragraph, an improvement example for making the present invention favorable and a correspondence example for each application are described. <Improvement Example 1. Regarding the inclination of the contact surface (10S)> Due to the inclination of the contact surface (10S) of the rod receiving portion (10), a shape that facilitates the removal of foreign matter such as sand is made possible. As shown in FIG. 5, the contact surface (10S) is inclined from the center line (O) toward the cylindrical inner wall (40),
Further, it is desirable to provide a shape in which foreign matter such as sand can be easily removed in the direction of the drop port (11).

<Improvement Example 2> Regarding the corners of the rod receiving part (10) and the drop opening (11)> Fig. 13 shows the rod receiving part (10)
In addition, it is an example of improving corners such as a place where foreign matter such as sand in the drop port (11) is likely to stay and is difficult to remove, that is, a groove or a curved corner. The groove of the rod receiving part (10) and the drop port (11) is made shallow, and a rounded corner is added to improve this. It is desirable to use this improved example theory not only for the rod receiving portion (10) but also for the exclusion hole (1) in general.

<Improvement Example 3. Regarding the accommodation of each inner rod (W) of the rod receiving part (10) and the correspondence of the impact difference such as dropping> As shown in FIG. 7, the center line (O) direction of the rod receiving part (10) is narrow, and the cylindrical inner wall It is desirable to widen the direction of the portion (40) so as to cope with the impact difference such as storage and drop of each inner rod (W) having different circumferences.

<Improvement Example 4. Regarding the shoulder of the inner wall of the cylinder (40)> As shown in FIG. 8, the top of the inner wall of the cylinder (40) where the foreign matters such as sand tend to stay, that is, the shoulder (40A) is inclined so that the inner direction is lowered. , It is desirable to make it easier to remove foreign matter such as sand.

<Example of Correspondence of Rod Receiving Portion (10) by Use> FIG.
4 is an example of correspondence of the rod receiving portion (10) based on the basic shape for each application. With the same conditions except for comparison items, storage,
The shape is proportional to the shape for dealing with a difference in the degree of impact of the rod receiving portion (10) such as dropping. Incidentally, the light impact-resistant butt plugs are a butt plug for a lightweight tailor rod and a butt plug for a short rod tailor. Heavy impact-compatible butt plugs are butt plugs for heavy-weight rods and butt plugs for long rods.

From this paragraph, the explanation is transferred to the retrograde prevention section (2). <About the size of wide mouth entrance part (21)> As shown in FIG. 15 (m), the ability of the retrograde prevention part (2) to remove foreign matters such as sand removed from the drop opening to the bottom is the amount of exercise related to this. When (Element 2) is constant, the total area of the wide-mouth inlets (average area of wide-mouth inlets per piece, 21R x number of wide-mouth inlets) is the entire exclusion hole (circular area with the inner wall of the cylinder as the circumference,
Since it is proportional to the area occupied by 40R), it is widened to facilitate elimination.

<Width of Narrow Mouth Exit Portion (22)> As shown in FIG. 15 (M), foreign matter such as sand removed at the bottom or sand entering the bottom through the drainage hole If the momentum (element 2) related to this is backward or intruding toward the receiving part, the total area of the narrow outlets (average area of the narrow outlets, 22R x number of narrow outlets per piece) ) Is the entire exclusion hole (the area of the circle with the inner wall of the cylinder as the circumference,
Since it is proportional to the area occupied by 40R), it is narrowed to prevent retrograde or invasion.

<About the length of the back wall portion (23)> FIG.
As indicated by 5 (m), the back wall length (23H) is proportional to this length when the momentum (element 2) related to this is constant, and the sand removed from the narrow outlet (22R), etc. Foreign material,
Alternatively, it makes it difficult for foreign matter such as sand that has entered the bottom through the water drainage hole to reach the narrow outlet (22R).

<Regarding Length of Surface Wall (24)> FIG.
As indicated by 5 (m), the surface wall length (24H) is proportional to this momentum when the momentum (element 2) related thereto is constant, and the foreign matter such as sand removed from the drop opening (11) is The bottom (30) is for quick clearance.

<Regarding Divided Shape> FIG. 15 (m) shows a pair structure. FIG. 15M shows a divided structure. Comparison Figure 1
As shown in 5, the area of the exclusion hole surrounding the retrograde prevention part (40
R) and the height (25H) of the anti-backward portion are the same, the relationship between the surface wall lengths is such that the divided structure length (24H) is shorter than the paired structure length (24H). The relationship between the surface wall angles is that the divided structure angle (24O) is the paired structure angle (2
The angle is more suitable for exclusion than 40 mm. That is, the divided structure is for speeding up the removal of foreign matter such as sand when the momentum (element 2) related thereto is constant as compared with the paired structure.

<Regarding the Relationship between the Appropriate Length of the Front Surface Wall (24) and the Length of the Back Surface Wall (23) and the Relationship between the Appropriate Number of Divisions> As described in paragraph 0050, the length of the front surface wall portion (24) is Corresponding to this short length, foreign matter such as sand can be quickly removed. As described in paragraph number 0049, the length of the back wall portion (23) corresponds to this length and makes it difficult for foreign matter such as sand to reach the narrow outlet portion (22).
That is, since the relationship between the length of the front surface wall portion (24) and the length of the rear surface wall portion (23) is contradictory, a balance is required in this installation so as not to impair both characteristics. It is difficult to determine theoretical values such as the number of divisions and wall lengths because there are so many factors surrounding them, but it is generally difficult to divide them, but generally the number of divisions is from 4 (small buttocks) to 16 (large size). Butt plug) is desirable, each wall length is preferably 5 mm (small buttocks) to 20 mm (large buttocks), surface wall angle (24O)
Is preferably an equilateral triangle having sides of the wide-mouth entrance portion (21) and the surface wall portion (24) or a shape close to this.

<Shape of the retrograde prevention section (2)> The shape of the retrograde prevention section (2) is an item of means for solving the problem (paragraph number 0).
As described in 026), the circumference of the cylindrical inner wall portion (40) surrounding it is divided into several or ten or more wide mouth inlet portions (21) each having the largest possible area. The narrow mouth outlet portion (22) is formed as narrow as possible so that foreign matter such as sand can pass therethrough and does not become clogged as it goes downward through the mouth. A back wall portion (23) which is a sloped wall located between the both mouths,
It is composed of the surface wall portion (24).

<Embodiment of Other Shape of Backward Preventing Section (2)> FIG. 16 shows an embodiment showing another shape other than the basic shape of the retrograde preventing section (2). A large number of various shapes are possible, so only a part of this is shown.

<Embodiment of Other Shape of Back Wall (23)> FIG. 17 is an embodiment showing another shape other than the basic shape of the back wall (23). A large number of various shapes are possible, so only a part of this is shown. As shown in FIG. 17 (a), as described in paragraph number 0043, foreign matter such as sand is likely to stay,
This is an example of improving a corner that is difficult to remove, that is, a corner. The groove on the back wall portion (23) is made shallow and rounded to improve this. FIG. 17 (a) is suitable for long-term use.
FIGS. 17L, 17L, and 17L are examples of shapes that make it difficult for foreign matter such as sand to reach the narrow outlet section 22. FIG. 17 () shows a rough shape. FIG. 17 (l) shows a cilia shape. FIG. 17 () shows a claw shape that is inclined inward. 17 (i), (l), and (l) are for single-purpose use purposes.

<Effective embodiment of the retrograde prevention section (2)> This effect is enhanced due to the retrograde prevention section (2) having a multiple and multilayer structure.

From this paragraph, the explanation will be made about the bottom portion (30) and the cylindrical inner wall portion (40). Since this case is an item of means for solving the problem and is as described, it is omitted.

From this paragraph, the function of freely fitting / removing will be explained. <About the function of freely fitting and removing> The rod receiving part (10) and the anti-reverse part (2) are provided with the function of freely fitting and removing, making it easy to wash the inside of the exclusion hole (1) and replacing parts such as wear and tear It is something to do. The shapes of the bottom portion (30) and the cylindrical inner wall portion (40) of the rod receiving portion (10) and the retrograde prevention portion (2) after removal are shown in FIG. 8 and paragraph number 0031.
As described in, the shape makes it easy to wash with water. The method of attaching the functional part is classified into the following two types according to the molding method of the rod receiving part (10) and the retrograde prevention part (2).

<Separation-type Removable Function> As shown in FIG. 18, the rod receiving portion (10) and the retrograde prevention portion (2) are formed separately, and the detachable function portion (201) ( 202) is provided. Handle (2
03) is not essential, but it facilitates the fitting and removal.

<Integral type fitting / removing function> In the integral type shown in FIG. 19, the rod receiving portion (10) and the retrograde prevention portion (2) are integrally molded, or separately molded, and then bonded or They are joined and integrated. The detachable function part (204) is provided either between the rod receiving part (10) and the retrograde prevention part (2), or between both. (FIG. 19 shows an example in which the function part (204) which can be freely fitted and removed is provided in the retrograde prevention part (2).

From this paragraph, the claims will be described. <Application circumstances> For convenience of explanation, the present invention has been described by dividing the exclusion hole (1) into each position, but the rod receiving portion (10), the retrograde prevention portion (2), the bottom portion (30), As shown in FIG. 5, the cylindrical inner wall portion (40) surrounding them has the same structure without a seam, and this is the original structure of the exclusion hole (1). In addition, this same structure has a common problem of eliminating foreign matter such as sand, and the functions of these parts become one,
This is one technology that was completed for the first time.

<Claim 10> This claim is shown in FIG.
As shown in the example of 0, the wide-mouth entrance part (21D) of the retrograde prevention part (2D) is formed in conformity with the exit (111D) of the drop port (11D), and the rod receiving part (10D) and the retrograde prevention part (2D) are formed. ) Is an integrated type. Rod receiving part (10
The side surface (10ED) of D) and the surface wall portion (24D) of the retrograde prevention portion (2D) form a continuous slope wall to subsequently remove foreign matter such as sand. The material configuration of the rod receiving portion (10D) is as described in paragraph 0041. Regarding the function that can be freely fitted and removed (205) and integration,
As described in paragraph numbers 0058 and 0060. (Fig. 2
0 is a function part (205) which can be freely fitted and removed.
0D) and the retrograde prevention unit (2D). )

<Claim 11> The convex cross-sectional shape of the present invention is a shape for ensuring the removal of foreign matter such as sand. However, if a person is aware of a slight decrease in function and pursues a simple removal function, it is possible to remove foreign matter such as sand without using the definition of the convex cross-sectional shape in the rod receiving part (10). It is a thing. That is, as shown in the examples of FIGS. 21 (a) and 21 (b), this shape has a cylindrical inner wall portion (4) from the center line (O) of the exclusion hole.
The rod receiving portion (10A) provided with an inclination in the 0) direction and the plurality of wide mouth-shaped drop openings (11) provided in the direction with the low inclination.
It consists of A). Although it is slow and ambiguous, foreign matter such as sand is collected in the drop port (11A) provided in the direction with a low inclination, and can be eliminated. The material configuration of the rod receiving portion (10) is as described in paragraph number 0041. Paragraph number 005
8, 0059, 0060.

<Claim 12> The retrograde prevention portion (2) of the present invention has a shape for promptly removing foreign matter such as sand. However, if the user is aware of a slight decrease in function and pursues a simple removal function, it is possible to remove foreign matter such as sand without using the retrograde prevention unit (2). That is, this shape does not have the retrograde prevention part (2) and is composed of the rod receiving part (10), the drop opening (11), the bottom part (30), and the cylindrical inner wall part (40). It is slow and ambiguous, but it makes it possible to eliminate foreign matter such as sand. For the material composition of the rod receiving part (10), see paragraph number 0041.
As stated. The function of freely fitting and removing is as described in paragraph numbers 0058 and 0059. (Since the retrograde prevention section (2) is not provided, it is provided only in the rod receiving section (10).)

<Claim 13> The retrograde prevention portion (2) used in the exclusion hole (1) of the present invention has a shape for ensuring removal of foreign matter such as sand. However, if the user is aware of a slight decrease in function and pursues a simple exclusion function, the retrograde prevention unit (2) does not have to be used in the exclusion hole (1).
It is possible to eliminate foreign matter such as sand. That is, as shown in the examples of FIGS. 23A and 23B, this shape is such that the retrograde prevention portion (2C) is provided in the drain hole (Y). It is slow and ambiguous, but it makes it possible to eliminate foreign matter such as sand. (The circumference of the water drainage hole (Y) can be widened to quickly remove foreign matter such as sand.) The function of freely fitting and removing is as described in paragraphs 0058 and 0059. .

<Regarding Claim 14> The divided shape of the present invention is a shape for promptly removing foreign matter such as sand. However, if a person is aware of a slight decrease in function and pursues a simple removal function, it is possible to remove foreign matter such as sand without using a divided shape for the retrograde prevention section (2). That is, this shape is as shown in the example of FIGS.
The wide-mouth entrance portion (21B), the narrow-mouth exit portion (22B), the back surface wall portion (23B), and the front surface wall portion (24B) are composed of a pair of retrograde prevention portions (2B). slow,
It is ambiguous, but it enables the exclusion of foreign matter such as sand. (The pair of retrograde prevention portions (2B) prevent foreign matter such as sand from entering through the water drainage hole (Y).) For the freely removable function, refer to paragraph numbers 0058 and 00.
59, 0060, as described.

From this paragraph, the present invention can be used in combination with conventional products,
It explains the purpose. <Regarding Combined Use with Mesh Material> FIG. 24 shows an example of combined use with a conventional butt plug in which a mesh material is attached to the drain hole.
This is to attach a framed removable fitting functional section (51) to the main body mounting section (54) around the drainage hole (Y) to which the mesh material (50) is mounted. Alternatively, the packing (52) framed around the mesh material (50) is attached to the main body mounting part (54) by the removable function part (53) framed around the drainage hole (Y). Is. As a result, the invasion of foreign matter such as sand, which is an object to be excluded, is further prevented, and the present invention is made more effective. In addition, the function part (5
1), (53), and packing (52) are removed from the main body (54) to open this mouth and wash with water.
It makes it easy.

<For use, a movable rod. Part 1> The movable rod prevents the wobbling of the inner rod (W) at the time of storage due to the shape of the butt rod holder, the inner rod holder, and the butt plug. It is an example of using the butt plug of the present invention for a movable rod. That is, by providing the rod receiving portion (10) with the fitting port (55) adapted to the inner diameter of the inner rod (W), the inner rod (W) is fixed and this is made more favorable.

<For use, a movable rod. Part 2> The movable rod prevents the wobbling of the inner rod (W) at the time of storage due to the shape of the butt rod holder, the inner rod holder and the butt plug. It is an example of using the butt plug of the present invention for a movable rod. That is, by providing the notch (56) in the rod receiving portion (10) of the present invention, the inner rod is sandwiched (held), and this is made more favorable.

[0070]

The following three points are mentioned with respect to the matter described in the item (paragraph number 0016) of the problem to be solved by the invention. <No. 1> It is to prevent the occurrence of defects such as scratches and breaks on the rod joints and the surface of each rod due to foreign matter such as sand.

<No. 2> Improvement of durability of each rod joint. Foreign matter such as sand that enters each rod joint promotes rubbing and abrasion of the contact surface of each rod joint over many years, and induces thinning and flattening of the contact surface. The present invention is
This is what prevents this and improves durability. That is, it is possible to prevent the occurrence of defects such as looseness, biting, sticking, and dropout due to this, which are caused by poor connection.

<No. 3> Progress in technological development concerning improvement of fishing transmissibility and improvement of durability of each rod joint. One of the key points in these technological developments is the hardening of each rod joint. On the other hand, the relationship between the hardness of each rod joint and the bite of sand is proportional, and if each rod joint is hardened, the sand bite becomes strong, and sometimes it cannot be released only by human power. And defects that significantly reduce the commercial value. In other words, in this proportional relationship, the removal of foreign matter such as sand inside the rod is indispensable for these technological developments.

[Brief description of drawings]

FIG. 1 is a front (cross-sectional) view of a conventional buttocks. It is a figure which shows the intrusion route of foreign matter, such as sand.

FIG. 2 is a front (cross-sectional) view of a conventional buttocks. It is a figure which shows the retention place of foreign materials, such as sand.

3 (1) and (2) are front (cross-sectional) views of a conventional butt plug. It is a figure which shows the structure which foreign substances, such as sand, are taken in by each rod part.

FIG. 4 is a front (cross-sectional) view of a conventional buttocks. It is a figure which shows the two-layered structure stopper.

FIG. 5 is a front (cross-sectional) view of the exclusion hole (1).

FIG. 6 is a plan view showing the middle stage of the exclusion hole (1). That is,
FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing a retrograde prevention section (2).

FIG. 7 is a plan view showing the upper side of the exclusion hole (1). That is,
Rod receiving part (10), drop port (11), cylindrical inner wall part (4)
It is the top view which extracted 0).

FIG. 8 is a front (cross-sectional) view showing the lower part of the exclusion hole (1) and the cylindrical inner wall portion (40). The bottom part (30) and the cylindrical inner wall part (4
It is an excerpt figure which shows 0).

FIG. 9 is a convex cross-sectional shape of the rod receiving portion (10). Figure 1
1 is a sectional view taken along line BB of FIG.

FIG. 10 is a plan view showing another embodiment of the contact surface (10S) of the rod receiving portion (10) and the drop opening (11).

FIG. 11 is a convex cross-sectional shape showing another embodiment of the rod receiving portion (10).

FIG. 12 is a convex cross-sectional shape showing a material configuration example of the rod receiving portion (10).

FIG. 13 is a plan view showing an example of improving the corners of the rod receiving portion (10) and the drop opening (11).

FIG. 14 is a comparative view showing an example of correspondence of the rod receiving portion (10) for each application.

FIG. 15 (a) is a front (cross-sectional) view showing a pair of structures of the retrograde prevention part (2). (M) is a front (cross-sectional) view showing a divided structure of the retrograde prevention part (2).

FIG. 16 is a plan view showing an example of another shape of the retrograde prevention section (2).

FIG. 17 is a front (cross-sectional) view showing an example of another shape of the back wall portion (23).

FIG. 18 shows a rod receiving portion (1 provided with a separation type fitting / removing function).
0) and a retrograde prevention part (2) are front views (cross sections).

FIG. 19 shows a rod receiving portion (1 provided with an integral fitting / removing function)
0) and a retrograde prevention part (2) are front views (cross sections).

FIG. 20 is a front (cross-sectional) view showing the rod receiving portion (10D) and the retrograde prevention portion (2D).

FIG. 21A shows a rod receiving portion (10A) and a drop opening (11).
It is a front view (cross section) which shows A). (A) is a top view which shows a rod receiving part (10A) and a fall opening (11A).

FIG. 22 (A) is a front (cross-sectional) view showing the retrograde prevention unit (2B), and FIG. 22 (A) is a plan view showing the retrograde prevention unit (2B).

FIG. 23A is a front (cross-sectional) view showing the retrograde prevention portion (2C). (A) is a top view which shows a retrograde prevention part (2C).

FIG. 24 is a front (cross-sectional) view of a drainage hole (Y) and the like showing an example of combined use with a mesh material (50).

FIG. 25A is a plan view of a rod receiving portion (10) provided with a fitting port (55) showing an application example (movable rod).
(A) is a front (cross-sectional) view of a rod receiving portion (10) provided with a fitting port (55) showing an application example (movable rod).

FIG. 26A is a plan view of a rod receiving portion (10) provided with a notch (56) showing an application example (movable rod).
(A) is a front (cross-sectional) view of a rod receiving portion (10) provided with notches (56) showing an application example (movable rod).

[Explanation of symbols]

Z Each rod tip (side with smaller diameter of each rod) Y Water drainage hole X Conventional rod stopper rod receiving part W Inner rod (rod inside the rod) U Butt stopper T Middle of double-layered stopper Cavity 1 Exclusion hole 2, 2B, 2C, 2D Retrograde prevention part 10, 10A, 10D Rod receiving part 10S Rod receiving part contact surface 10E, 10ED Rod receiving part side surface 10F Rod receiving part bottom face 11, 11A, 11D Drop port 111D Drop Mouth outlets 21, 21B, 21C, 21D Wide mouth inlets 22, 22B, 22C of the anti-reverse section Narrow-mouth outlets 23, 23B Back wall sections 24, 24B, 24D of the anti-reverse section Surfaces of the anti-reverse section Wall section 21R Wide mouth entrance average area per anti-reverse section 22R Narrow mouth exit average area per anti-reverse section 23H Back wall length 24H, 24H of anti-reverse section Front wall length 25H retrograde section Preventing part high 24O, 24O Ma surface angle of the anti-reverse section 201, 202, 204, 205 Detachable function section 203 of the rod receiving section and the anti-return section 203 Detachable function section handle of the anti-return section 40R Cylindrical inner wall section Area of circle as circle (area of exclusion hole surrounding retrograde prevention portion) 30 Bottom 40 Cylinder inner wall 40A Cylinder inner wall shoulder 50 Mesh material 51 Mesh material around the drain hole is framed Removable / unremovable functional part 52 Packing framed around the mesh material 53 Removable / unremovable functional part 54 framed around the drainage hole Removable / unremovable functional part (51), (53), frame around the mesh material The body mounting portion 55 of the removed packing (52) for the movable rod, the fitting opening 56 for the rod receiving portion 56, for the movable rod, the notch in the rod receiving portion O The center line H, K of the exclusion hole Has been rod and receiving unit Material I buffer material G, M general material L elastic material

Claims (14)

[Claims] 1. A butt plug for removing foreign matter, such as sand, that has penetrated into the inside of a rod, in a shape provided for eliminating the foreign matter. 2. A rod receiving portion (10) and a drop opening (11)
The butt plug according to claim 1, further comprising: an exclusion hole (1) including a retrograde prevention part (2), a bottom part (30) and a cylindrical inner wall part (40). 3. A rod receiving part (10) having a narrow contact surface (10S) and a plurality of drop ports (11) having a wide mouth shape are provided by using a plurality of convex cross-sectional shapes. The butt plug described. 4. A wide-mouthed entrance portion (21) and a narrow-mouthed exit portion (2)
The backstop according to claim 2, further comprising a retrograde prevention section (2) in which the back wall section (23), the back wall section (23), and the front wall section (24) are divided. 5. The butt plug according to claim 2, wherein a bottom portion (30) having an inclined surface connected to the drainage hole (Y) in the lower direction is provided. 6. A rod receiving portion (10) provided with an upper cushioning material (I) and a lower general material (G).
The butt plug described in 3. 7. A rod receiving part (10) provided with an elastic material (L) is provided between a rod receiving part material (K) which has been conventionally used and a lower general material (M). A few
The butt plug described. 8. A rod receiving portion (10) and a retrograde prevention portion (2)
The butt plug according to claim 2, wherein the butt plug is provided with a detachable function for detachable fitting. 9. A rod receiving portion (10) and a retrograde prevention portion (2)
The butt plug according to claim 2, wherein the butt plug is provided with an integral type removable function. 10. The wide-mouthed entrance part (2) of the retrograde prevention part (2D).
1D) is formed to match the shape of the outlet (111D) of the drop opening (11D), and the rod receiving portion (10D) and the retrograde prevention portion (2
The butt plug according to claim 2, wherein D) is integrated. 11. A rod receiving portion (10A) having an inclination, and a drop opening (11) having a wide mouth and a plurality of shapes in the direction of low inclination.
The butt plug according to claim 2, wherein A) is provided. 12. The butt plug according to claim 2, wherein the retrograde prevention part (2) is not provided. 13. The butt plug according to claim 2, wherein the installation of the retrograde prevention portion (2C) is changed from the exclusion hole (1) to the drainage hole (Y). 14. The butt plug according to claim 2, further comprising a pair of retrograde prevention portions (2B).