JP2012196185A - Internally threaded float - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the production efficiency of an internally threaded float equipped with a fishing line insertion hole having a changing inner diameter.SOLUTION: The internally threaded float is equipped with a float body equipped with a through hole formed from an upper through hole part and a lower through hole part having an inner diameter larger than that of the upper through hole part, a metal member composed of a metal pipe that is made of a metal as a material, provided with the fishing line insertion hole having an inner diameter changing along the direction of fishing line insertion, has an outer diameter corresponding to the upper through hole part and is formed with passing through the through hole of the float body and a float tip metal part that is arranged so as to be inserted into the opening part of the lower through hole part at the lower tip end part of the metal pipe and is separately from or integrally with the metal pipe and a ring type sinker that is inserted into the metal pipe and positioned at the lower through hole part in a state in which the metal pipe is passed through the through hole of the float body.

Description

  The present invention relates to a through-hole used for fishing.

  As a conventional drill for fishing, there is a pipe with a large diameter part through which the upper bead ball can be inserted and a small diameter part through which the lower bead ball cannot be inserted. It is known to be filled with metal. (For example, refer to Patent Document 1 (FIG. 3)). The tube is formed because the thread is inserted.

JP-A-8-23844

  The structure of the conventional hollow wall is manufactured as follows, for example. First, the floating body is cut out from the upper part to form a cavity. Then, a process of embedding metal and wood from the upper side of the floating body is performed on the hollow portion. Moreover, the outer diameter of the resin pipe corresponding to each of a large diameter part and a small diameter part differs also according to an internal diameter. Therefore, the through-hole formed in the floating body itself for the tube is also formed in two stages so that the upper side corresponds to the large diameter portion and the lower side corresponds to the small diameter portion. As described above, the conventional through hole has a problem that the manufacturing process is complicated and difficult because the inner diameter of the pipe through which the thread is inserted is two stages.

  The present invention has been made in view of such a situation, and is intended to enable efficient production of a threading hole provided with a road thread insertion hole formed so that the inner diameter is different between the upper side and the lower side. Objective.

  The present invention has been made in order to solve the above-described problem, and a Uki body having a through hole formed by an upper through hole portion and a lower through hole portion having an inner diameter larger than the upper through hole portion; The material is made of metal, and the thread is inserted so that the inner diameter changes along the direction in which the thread is inserted, and the outer thread has an outer diameter corresponding to the upper through hole. A metal pipe provided through the hole, and a hook formed at the lower end portion of the metal pipe so as to be fitted into the opening of the lower through-hole portion and formed separately or integrally with the metal pipe. A metal member composed of a tip metal part and a ring provided to be inserted through the metal pipe so that the metal pipe is positioned in the lower through-hole part when the metal pipe passes through the through-hole of the base body. With mold weight A float through among characterized and.

  According to the present invention, it is possible to efficiently manufacture a through thread provided with a road thread insertion hole formed so that the inner diameter is different between the upper side and the lower side.

It is a figure which shows the completed through hole 1. FIG. It is a figure which shows the Uki tip metal part. It is a figure which shows the metal pipe 31. FIG. It is a figure which shows the ring type weight 41. FIG. It is a figure which shows the metal pipe 31 which attached the uki tip metal part 21 and the ring type weight 41. FIG. It is a figure which shows the form which attached the metal pipe 31 which attached the uki tip metal part 21 and the ring type weight 41 to the uki body 11 further. It is a figure which expands and shows the upper part and lower part of the main body 11 shown in FIG. It is a figure which shows the state of the through hole 1 at the time of actual fishing. It is a figure which shows the other example of a shape of the hole of the metal pipe 31. FIG. It is a figure which shows the other structural example of a metal member.

  FIG. 1 shows a cross-sectional structure of the through hole 1 of the present embodiment. The through-hole 1 is composed of parts of a main body 11, a front-end metal part 21, a metal pipe 31, and a ring-type weight 41, and a paint 51 is applied to the whole.

  FIGS. 2A and 2B are a plan view and a side view of the main body 11. The main body 11 is made of wood such as paulownia, for example, and is formed in the shape shown in FIG. Further, through holes 12 are formed in the main body 11 from the top to the bottom as shown in FIG. The through-hole 12 is formed such that the upper through-hole portion 12a and the lower through-hole portion 12b having a larger diameter are connected to each other. The lower through-hole portion 12b is also used as a space for storing the weight 41 as described later. The through hole 12 can be easily formed by drilling using a stepped drill blade having a size corresponding to the diameters of the upper through hole portion 12a and the lower through hole portion 12b, for example. Further, it can be easily formed even when drilling is performed using two types of drill blades corresponding to the diameters of the upper through-hole portion 12a and the lower through-hole portion 12b. Moreover, the opening edge part 13 located in the peripheral edge part of the opening part of the lower side through-hole part 12b in the main body 11 is formed as a horizontal surface. In addition to the wood, for example, a resin or the like may be employed as the material for the main body 11.

  FIG. 3A and FIG. 3B are a plan view and a side view of the Uki tip metal part 21. As for the uki tip metal part 21, for example, a metal such as stainless steel is used as a material, and a cylindrical part and a taper part therebelow are integrally formed. As shown in the drawing, a pipe insertion hole 22 is formed in the uki tip metal portion 21. The ring-shaped outer peripheral edge portion 21a that protrudes from the cylindrical portion at the end of the tapered portion is formed horizontally.

  4A and 4B are a plan view and a side view of the metal pipe 31, respectively. The metal pipe 31 is made of a metal such as stainless steel, for example, and is formed in an elongated cylindrical shape as shown in the figure. A thread insertion hole 32 is formed in the metal pipe 31 from the top to the bottom. The road thread insertion hole 32 includes an upper large diameter portion 32a and a lower small diameter portion 32b having a smaller diameter. Further, a tapered portion is formed at the lower portion of the metal pipe 31. The tapered portion is combined with the uki tip metal portion 21 to become the lower tip portion of the through-through uki 1.

  As shown in FIG. 4B, the step 32c, which is a boundary portion where the diameter changes between the large diameter portion 32a and the small diameter portion 32b in the path thread insertion hole 32, is formed in a tapered shape. When making the device, the path thread is inserted into the path thread insertion hole 32 through the opening of the upper large diameter part 32a and pulled out from the opening side of the lower small diameter part 32b. At this time, since the step portion 32c is formed in a tapered shape, the leading end of the road yarn is hardly caught in the step portion 32c, and the road yarn can be passed smoothly.

  It can be said that the metal pipe 31 having the above structure has a structure in which the inner diameter is different between the upper side and the lower side of the road thread insertion hole 32. Hereinafter, this structure is also referred to as a “two-stage inner diameter structure”. The two-stage inner diameter structure of the path thread insertion hole 32 in the present embodiment uses two types of drill blades having diameters corresponding to the large diameter portion 32a and the small diameter portion 32b or stepped drill blades, and the metal pipe 31. It can be formed by perforating the member that is the source of the above. Conventionally, in order to form such a two-stage inner diameter structure, it is necessary to prepare two types of resin pipes having different inner and outer diameters. That is, two parts are required. On the other hand, in the present embodiment, only one metal pipe 31 is required.

  FIG. 5A and FIG. 5B are a plan view and a side view of the ring weight 41. The ring type weight 41 is made of a metal such as brass, for example, and is formed in a ring shape having a through hole 42 as shown in the figure.

  The structure of the through hole of this embodiment will be described according to the manufacturing procedure. First, as shown in FIG. 6, the lower part of the metal pipe 31 is inserted into the pipe insertion hole 22 of the end metal part 21. At this time, the taper portion of the metal pipe 31 and the taper portion of the end metal portion 21 are positioned so as to form the same taper surface. Further, the joint surfaces of the pipe insertion hole 22 and the metal pipe 31 are fixed by an adhesive s as shown in FIG. As a result, a metal member in which the end metal portion 21 and the metal pipe 31 are integrated is formed. The adhesive s also has a function of preventing water from entering from the outside by closing the joint surface between the pipe insertion hole 22 and the metal pipe 31.

  Next, as shown in FIG. 6, the metal pipe 31 is inserted into the through hole 42 of the ring weight 41, and in this state, the ring weight 41 is fixed to the metal pipe 31 with an adhesive or the like. At this time, by changing the position of the ring-type weight 41 fixed to the metal pipe 31 to be higher or lower, it is possible to finely adjust the position of the center of gravity to be set in the through hole 1. The number or size (thickness (width in the radial direction) and height) of the ring-type weight 41 fixed to the metal pipe 31 can be changed according to the weight load to be set in the through hole 1. That is, various combinations of gravity center positions and weight loads can be set by using the same structure for the main body 11 itself depending on the combination of the position, number and size (thickness and height) of the ring weight 41. Can do. At this time, if the size of the ring weight 41 is set to be fine, the weight load can be set with high accuracy.

  Next, from the side of the lower through-hole portion 12 b of the main body 11, the metal pipe 31 to which the front end metal portion 21 and the ring weight 41 shown in FIG. 6 are fixed is inserted. The cross-sectional view of FIG. 7 shows a state where the metal pipe 31 to which the Uki tip metal portion 21 and the ring type weight 41 shown in FIG. 6 are fixed is completely inserted into the Uki main body 11. In this state, as shown in the drawing, the metal pipe 31 penetrates from the lower through-hole portion 12b to the upper through-hole portion 12a. At this time, the upper end portion of the metal pipe 31 protrudes from the upper through-hole portion 12a by a predetermined height. The height at which the upper end portion of the metal pipe 31 protrudes corresponds to the thickness of the paint applied in the subsequent painting process.

  Moreover, since the diameter of the metal pipe 31 corresponds to the inner diameter of the upper through-hole portion 12a of the main body 11, the upper portion of the metal pipe 31 is the upper portion of the main body 11 as shown in FIGS. It will be in the state inserted in the upper side through-hole part 12a. Further, as shown in FIG. 7, the ring type weight 41 fixed to the metal pipe 31 is positioned so as to be accommodated in the lower through-hole portion 12 b of the main body 11.

  Further, as shown in an enlarged view in FIG. 8B, the uki tip metal portion 21 is in close contact with the cylindrical portion fitted into the lower through-hole portion 12 b of the uki body 11. At the same time, the horizontal surface of the outer peripheral edge 21 a of the uki tip metal portion 21 is in close contact with the horizontal surface of the opening edge 13 at the lower end of the uki body 11. That is, the opening of the lower through-hole portion 12b of the main body 11 is closed by the upper end metal portion 21.

  Under the above-described state, as shown in FIG. 8A, the portion where the upper through-hole portion 12a of the main body 11 and the upper portion of the metal pipe 31 are in close contact with each other is spotted by the adhesive s. It is fixed in this way. Further, as shown in FIG. 8B, the portion where the uki tip metal portion 21 and the uki body 11 are in close contact with each other is fixed so as to be sealed by the adhesive s. That is, the joint surface between the metal member (the end metal portion 21 and the metal pipe 31) and the end main body 11 is fixed by the adhesive s. Furthermore, the part where the metal pipe 31 and the pipe insertion hole 22 of the end metal part 21 are in close contact with each other is also fixed by the adhesive s. The through hole of the structure shown in FIG. 8B has an excellent water stop function, which will be described later.

  Next, the paint 51 is applied to the whole from the state shown in FIG. 7 to complete the through hole 1 as shown in FIG. The paint 51 is actually applied in several layers including the base coat. Further, as shown in FIG. 7, the periphery of the upper end portion of the metal pipe 31 that protrudes from the main body 11 in the state before painting is covered with a layer of paint 51, and does not protrude as shown in FIG. 1.

  FIG. 9 shows a state in which the through hole 1 used in the floating mechanism is floating on the water surface. In this figure, the through hole 1 is shown as a sectional view showing only the path thread insertion hole 32 (large diameter portion 32a, small diameter portion 32b) of the metal pipe 31, and the detailed structure is omitted. A thread 61 passes through the thread insertion hole 32 (large diameter part 32a, small diameter part 32b) of the threader 1. A shimo ball 71 is passed through the road thread 61, and a thread stop thread 81 is tied. Further, although not shown in the drawing, a device that is connected with Harris, a fishing hook, or the like is tied to the tip of the road line 61 that is in the water from the small-diameter portion 32b of the through hole 1. FIG. 9 shows a state in which the gimmick is completed, and the shimo ball 71 enters the large-diameter portion 32a of the through-hole 1 and is stopped at the entrance of the small-diameter portion 32b so as to be pressed by the non-threading thread 81. .

  In the loose mechanism, the loose width is determined by the position of the ground thread 81 tied to the road thread 61, and the floating length of the entire mechanism is determined. When the floating mechanism is inserted, the entire mechanism is sunk while the road thread 61 passes through the road thread insertion hole 32 due to the weight of the mechanism and the resistance of the tide acting on the mechanism. The process by which this mechanism sinks is called “thread dropping”.

  As described above, the through hole 1 of the present embodiment has a two-stage inner diameter structure including the upper large-diameter portion 32a and the small-diameter portion 32b with respect to the path yarn insertion hole 32. In addition, the upper large-diameter portion 32a has a large diameter that allows the squirrel balls 71 to enter. As a result, the thread drop is remarkably smooth as compared with the case where all the path thread insertion holes 32 are formed with the same diameter as the small diameter part 32b.

  As described above, the through hole 1 of the present embodiment has a two-stage inner diameter structure for the hole portion through which the road thread is inserted. That is, it has the path thread insertion hole 32 which consists of the upper large diameter part 32a and the lower small diameter part 32b. This two-stage inner diameter structure itself is also used in a conventional through-hole as shown in Patent Document 1, but the through-through 1 of the present embodiment can be manufactured more efficiently than the conventional one. Is considered. Hereinafter, this point will be described.

  Conventionally, two resin pipes having different inner diameters are used in order to obtain a two-stage inner diameter structure. The two resin pipes also have different outer diameters depending on the inner diameter. For this reason, the actual manufacturing process of a conventional through-hole having a two-stage inner diameter structure is complicated and time-consuming. Specifically, for example, the hollow portion is formed by cutting out the main body of the through hole from the top. Next, a weight metal is placed below the cavity, and the remaining cavity is refilled with wood from above. A through hole having a large upper diameter and a small lower diameter is formed in the vertical direction of the through hole main body. Then, a resin pipe having a larger diameter is fitted on the upper side of the through hole, and a resin pipe having a smaller diameter is fitted on the lower side to form a path thread insertion hole.

  As described above, the process of manufacturing a conventional through hole having a two-stage inner diameter structure is complicated because the diameter of the through hole into which the resin pipe is inserted is lower than the upper diameter in order to obtain the two-stage inner diameter structure. This is thought to be due to the smaller size. In the shape of the through hole, the resin pipe corresponding to the larger diameter cannot be inserted from the lower side of the main body, but needs to be inserted from the upper side. Along with this, the weight metal also enters from the upper side of the main body, and as a result, the metal is put into the hollow part formed by hollowing out the main body, and then the troublesome process of further filling the hollow part with wood It has become.

  On the other hand, the through hole 1 of the present embodiment forms a thread insertion hole 32 having a two-stage inner diameter structure by punching the metal pipe 31. Thereby, only one part is required as a pipe for obtaining a two-stage inner diameter structure, and the outer diameter of the metal pipe 31 can be made the same from the upper side to the lower side. At the same time, the through hole 12 formed in the main body 11 is formed such that the diameter of the lower side (lower side through hole 12b) is larger than the upper side (upper side through hole portion 12a). Thereby, in this Embodiment, as demonstrated previously, the simple process of inserting the metal pipe 31 of the state which attached the uki tip metal part 21 and the weight 41 from the lower side of the through-hole 12 of the uki body 11. It can be. By performing this process, a two-stage inner diameter structure is obtained in the through hole 1, and at the same time, the embedding of the weight 41 is completed.

  In order to obtain a two-stage inner diameter structure, conventionally, two parts are required. That is, two resin pipes having different diameters are necessary. On the other hand, in the present embodiment, only one component as the metal pipe 31 is required, and for example, the component can be managed more efficiently. The two-stage inner diameter structure in the present embodiment is a member that is the base of the metal pipe 31 using two types of drill blades or stepped drill blades having diameters corresponding to the large-diameter portion 32a and the small-diameter portion 32b. It can be formed easily and accurately by perforating.

  Further, the through hole 1 of the present embodiment has a higher center of gravity than the lower center of gravity in which a weight is arranged only on the lower side of the main body described in Patent Document 1. That is, it has a high center of gravity. The high center of gravity has the following advantages.

  In general, in uki fishing, in order to improve the eating of the fish, make it easier to catch the fish, and to make it easier to match when there is a bite, it will flow to some extent without stretching the device. Is effective. In this “flow while stretching the mechanism”, the road line 61 coming out from the upper side of the threader 1 is not in a loose state but in the direction of the angler, that is, in the direction indicated by the arrow A in FIG. It will be in a state of being stretched with a certain amount of force. On the other hand, the lower side of the through hole 1 is pulled in the tidal direction as indicated by an arrow B in response to the device being pulled by receiving a tidal resistance. For this reason, the through hole 1 tries to take an oblique posture when floating in seawater as shown in FIG.

  However, in the case of Uki with a low center of gravity, he gets up and tries to stand upright like a small lawyer even if he tries to take an oblique posture. For this reason, the head of the sea is likely to wobble and cannot take a stable oblique posture in water. In such a state, the device is moved inadvertently, causing problems such as feeding out the food that the fish tried to hold on and making it difficult for it to come out. On the other hand, if the center of gravity is high as in the case of the through hole 1 of the present embodiment, the head of the ring does not wobble and can be stabilized in an oblique posture as shown in FIG. . As a result, the eating of fish is improved, and it is easy to produce atari.

  And the through hole 1 of this Embodiment is devised as follows in order to make it a high center of gravity. First, a conventional threading machine represented by Patent Document 1 uses a resin pipe for a road thread insertion hole. On the other hand, a metal pipe 31 is used in the road thread insertion hole 32 of the through hole 1 of the present embodiment. Since the metal pipe 31 is a metal, it has a higher specific gravity than the resin pipe and is therefore heavier. That is, the metal pipe 31 itself has a role as a weight. And since such a metal pipe 31 has penetrated the uki body 11 as a pipe of a thread thread through hole, the weight is not embedded only in the lower part of the uki body 11, but the upper and lower sides of the uki body 11 It becomes the same state as being almost uniformly embedded in the direction. In other words, the through hole 1 of the present embodiment is already set to have a tendency of high center of gravity because the metal pipe 31 is attached through.

  In addition, since the ring-type weight 41 is inserted into the metal pipe 31, as shown in FIG. 7, the intermediate height position in the cavity of the lower through-hole portion 12 b of the through hole 1. Placed in. Accordingly, the weight load is set in a state where the high center of gravity is accurately set together with the metal pipe 31.

  Further, when the ring weight 41 is attached to the metal pipe 31, the fixing position thereof can be changed according to preference. This makes it possible to finely adjust the position of the center of gravity according to the user's preference.

  Moreover, the through hole 1 of the present embodiment has a very excellent water stop performance as described below. For example, in a conventional through-hole, a hole for inserting a road thread is formed by adhering and fixing a resin pipe in a hollow portion at the center of the main body. Usually, vinyl chloride is often used for such a resin pipe, but the resin such as vinyl chloride is very stretchable due to the influence of heat or the like. For this reason, the adhesive surface of the resin pipe and the main body was easily peeled while using the ground. If this adhesive surface is peeled off, the buoyancy changes due to water immersion from the boundary between the resin pipe and the main body and the weight, which makes it very difficult to use.

  On the other hand, in the case of the through hole 1 of the present embodiment, what is fixed by the main body 11 and the adhesive s is a metal member made of, for example, stainless steel (the end metal part 21 and the metal pipe 31). . The metal such as stainless steel has very little expansion and contraction due to heat or the like as compared with the resin. Thereby, peeling of the adhesive agent at the joining surface between the metal member (Uki tip metal portion 21 and the metal pipe 31) and the Uki main body 11 is very unlikely to occur. Therefore, the joint surface between the metal member (Uki tip metal portion 21 and the metal pipe 31) of this embodiment and the Uki main body 11 has a very high water-stopping property.

  In addition, the place where the main body 11 and the metal member are fixed (sealed) by the adhesive s in the through hole 1 of the present embodiment is as follows. That is, the joint surface between the main body 11 (the lower inner periphery of the lower through-hole portion 12b and the horizontal surface of the opening edge portion 13) and the upper end metal portion 21 (the outer periphery of the cylindrical portion and the outer peripheral edge portion 21a); 11 is a joint surface between the upper through-hole portion 12a of the eleventh and the outer periphery of the metal pipe 31. Further, in the metal member, the bonding surface between the inner peripheral surface of the metal end metal portion 21 and the outer peripheral surface of the metal pipe 31 is also fixed by the adhesive s.

  From the viewpoint of water stopping performance, it is advantageous that the bonding surface by the adhesive material s is as large as possible. At the joint surface between the uki body 11 and the uki tip metal portion 21, not only the horizontal surfaces of the outer peripheral edge portion 21a of the uki tip metal portion 21 and the opening edge portion 13 of the lower through-hole portion 12b, but also following this. The joint surface between the outer peripheral portion of the cylindrical portion of the end metal portion 21 and the inner peripheral portion of the lower through-hole portion 12b is also marked with an adhesive s. Thus, a wide bonding area is secured on the joint surface between the main body 11 and the front end metal portion 21.

  In addition, the joint surface between the upper through-hole portion 12a of the main body 11 and the outer periphery of the metal pipe 31 can also secure the length of the upper through-hole portion 12a as an adhesion area, and accordingly against flooding. It can be strong.

  In addition to this, a width of about 8 mm, for example, in the height direction is also secured in the joint surface between the inner peripheral surface of the metal tip 21 and the outer peripheral surface of the metal pipe 31 in the metal member. For this reason, even if, for example, a slight peeling of the adhesive s occurs on the tip side of the joint surface between the uki tip metal part 21 and the metal pipe 31 due to an impact or the like, there is a margin in the remaining joint surface behind this. Therefore, it is strong against flooding.

  Moreover, although it is not an adhesive surface, the through hole 1 of the present embodiment has one more structurally effective water stop performance. That is, as shown in FIG. 7, the upper side of the metal pipe 31 of the present embodiment protrudes from the base body 11 by a predetermined height before painting. Then, by applying the coating, the protruding portion of the metal pipe 31 is hidden by the thickness of the paint 51 as shown in FIG. And by such a structure, the boundary of the upper opening part of the upper side through-hole part 12a and the metal pipe 31 is covered with the coating material 51, and it is prevented from being immersed in water directly.

  The coating layer formed by painting itself prevents flooding. Based on this, the water stop performance can be improved by thickening the coating. However, increasing the thickness of the paint means that the weight of the penetrating ring itself increases, so that the remaining buoyancy is reduced, making it difficult to set the buoyancy according to the weight load. This problem becomes prominent particularly in the case of a light weight loader. However, the through-hole 1 of the present embodiment increases the above-mentioned increase by changing the size of the ring weight 41 even if the coating 51 is formed thick and the weight of the coating increases. Adjustments to the minutes can be made easily. In other words, this embodiment can easily improve the water stop performance by using a method of thickening the coating.

  In addition, even if the materials as the metal of the uki tip metal part 21 and the metal pipe 31 are different, when compared with the difference in expansion / contraction ratio due to heat between the resin and the metal, the expansion / contraction ratio due to mutual heat is Much closer. In this respect, high water stopping performance can be maintained even if the metal materials of the uki tip metal portion 21 and the metal pipe 31 are different. However, if the same metal material is used, the expansion and contraction rate due to heat is completely the same, so that higher water stop performance can be obtained. In the present embodiment, the materials of the uki tip metal part 21 and the metal pipe 31 are made of, for example, the same stainless steel, so that the expansion and contraction rates due to the mutual heat are matched.

  Further, as shown in FIG. 10A, the path thread insertion hole 32 of the metal pipe 31 can be formed such that the large diameter portion 32a is shortened and the small diameter portion 32b is lengthened. On the contrary, as shown in FIG. 10B, the large diameter portion 32a can be made longer and the small diameter portion 32b can be made shorter. That is, the ratio of the lengths of the large diameter portion 32a and the small diameter portion 32b of the path yarn insertion hole 32 can be arbitrarily set.

  The ratio of the length of the large diameter portion 32a and the small diameter portion 32b of the path thread insertion hole 32 is, for example, the stability and sensitivity of the posture when the through-hole 1 is drawn into the water due to the fish feeding and running. To affect. Here, “sensitivity” refers to the sensitivity of the reaction of the movement of the looper 1 that occurs when a fish catches a bait. In other words, when the fish catches the bait, the sensitivity is so high that the movement corresponding to that appears in the uki 1. As described with reference to FIG. 9, normally, when the device is being played in actual fishing, the through hole 1 takes an oblique posture. The inventors of the present application have investigated that when the ratio of the lengths of the large-diameter portion 32a and the small-diameter portion 32b is 1: 1, this posture is most stable and the fish ran for food. Also, the through hole 1 is stably drawn into the water in this oblique posture. The more stable the slanting posture of the through hole 1 as it is drawn into the water, the better the fish bites. In other words, if the posture of Uchi 1 is not stable when it is drawn into the water, it is easy for the fish to release the fried food because of the unnatural movement of the food due to the shaking of the Uki. In addition, as the large diameter portion 32a becomes longer than the small diameter portion 32b, the oblique posture of the through hole 1 tends to become unstable. However, when the fish catches the bait, the movement according to it becomes unstable. Is sensitive to ukiuki 1 and uki's sensitivity is increased. That is, the ratio of the length of the large-diameter portion 32a and the small-diameter portion 32b of the path thread insertion hole 32 is determined in consideration of the balance between the stability of the posture and the sensitivity when the through-hole 1 is drawn into the water. What is necessary is just to set according to workmanship, feeling, and liking.

  FIG. 10C shows a modified example in which the way thread insertion hole 32 is formed in a tapered shape. By making the road thread insertion hole 32 tapered so that the diameter decreases from the upper side to the lower side, for example, the step part between the large diameter part 32a and the small diameter part 32b is eliminated, and the road thread 61 can be easily passed.

  Further, as shown in FIG. 10 (d), a modified example in which the large diameter portions 32a and 32a are formed on the upper and lower sides of the metal pipe 31, and the small diameter portion 32b is formed between the large diameter portions 32a and 32a. Can also think. Furthermore, although illustration is omitted, it is naturally possible to form the same inside diameter from the upper side to the lower side of the path thread insertion hole 32.

  Moreover, with reference to FIG. 11, the other structural example of the metal member which consists of the Uki tip metal part 21 and the metal pipe 31 is demonstrated. First, as shown in FIG. 11A, the Uki tip metal portion 21 is formed so as to be connected to the pipe insertion hole 22 and the lower thread insertion hole 22a. The pipe insertion hole 22 has a shape corresponding to the lower end portion of the metal pipe 31. Further, the road thread insertion hole portion 22 a has the same inner diameter as the small diameter portion 32 b of the metal pipe 31. Then, the lower end portion of the metal pipe 31 is inserted into the pipe insertion hole 22 of the end tip metal portion 21. Accordingly, as shown in FIG. 11B, the lower end portion of the metal pipe 31 is fitted into the pipe insertion hole 22 of the end tip metal portion 21. In this state, the small diameter portion 32b of the metal pipe 31 and the path thread insertion hole portion 22a of the end metal portion 21 are connected to form a single hole portion. Note that the joint surface between the pipe insertion hole 22 of the metal end portion 21 and the lower end portion of the metal pipe 31 is fixed by an adhesive s.

  As previously shown in FIG. 6, in the configuration in which the metal pipe 31 penetrates the uki tip metal portion 21, the metal pipe 31 and the metal pipe 31 are used when the tip portion of the metal member is strongly struck during use of the through hole 1. It cannot be said that there is a possibility that adhesion between the metal pipe 31 and the uki tip metal portion 21 may be peeled off due to a large force applied to the uki tip metal portion 21. On the other hand, in the case of the metal member shown in FIG. 11, the metal pipe 31 does not penetrate the uki tip metal portion 21, and the tip portion of the metal pipe 31 is embedded in the uki tip metal portion 21. It has become. In this case, in the front end portion of the metal member, the portion that directly collides with the outside is only the front end metal portion 21, and therefore the metal pipe 31 is not displaced. That is, the structure is more resistant to flooding than the structure of FIG.

  Further, the entire shape of the metal member shown in FIGS. 6 and 11B may be integrally formed from a single metal material such as stainless steel. If formed in this way, there is no joint surface between the metal pipe 31 and the end metal part 21, which makes it more resistant to water immersion. Such a metal member can be formed by using an existing metal processing technique.

  Further, the overall shape of the through hole 1 may be a shape other than that shown in the drawing. For example, the cross-sectional shape can be closer to an ellipse, or the cross-sectional shape can be closer to a circle.

DESCRIPTION OF SYMBOLS 11 Main body 12 Through-hole 13 Opening edge part 12a Upper through-hole part 12b Lower through-hole part 21 Uki tip metal part 21a Outer peripheral edge part 22 Pipe insertion hole 22a Road thread insertion hole part 31 Metal pipe 32 Road thread insertion hole 32a Large Diameter portion 32b Small diameter portion 41 Ring type weight 42 Through hole 51 Paint 61 Road thread 71 Shimori ball 81 Unlocking thread

Claims (7)

A main body formed with a through-hole formed by an upper through-hole portion and a lower through-hole portion having an inner diameter larger than the upper through-hole portion,
A metal thread is used as the material, and the thread thread insertion hole is formed so that the inner diameter changes along the direction in which the thread thread is inserted, and has an outer diameter corresponding to the upper through hole portion, A metal pipe provided through the metal pipe, and a Uki tip that is provided so as to be fitted into the opening of the lower through hole at the lower tip of the metal pipe and is formed separately or integrally with the metal pipe A metal part comprising a metal part;
A ring-type weight provided to be inserted through the metal pipe and positioned in the lower through-hole portion in a state where the metal pipe passes through the through-hole of the main body;
A through hole characterized by comprising. The joint surface between the metal member and the main body is fixed in a state where the joint surface is sealed with an adhesive,
The through-hole of claim 1 characterized by the above-mentioned. The thread insertion hole of the metal pipe is formed so that the inner diameter is changed by the upper large diameter portion and the lower small diameter portion having an inner diameter smaller than the large diameter portion.
The through hole according to claim 1 or claim 2, wherein: The inner diameter of the road thread insertion hole of the metal pipe varies between an upper and lower large diameter portion and a small diameter portion having an inner diameter smaller than the large diameter portion between the upper and lower large diameter portions. Is formed as
The through hole according to claim 1 or claim 2, wherein: Depending on the stability or sensitivity of the desired posture in water, the position of the step portion at the boundary between the upper large diameter portion and the small diameter portion in the thread insertion hole of the metal pipe is set.
The through hole of Claim 3 or Claim 4 characterized by the above-mentioned. The attachment position of the ring weight provided by being inserted through the metal pipe is set according to the center of gravity to be set,
A through hole according to any one of claims 1 to 5.   The through hole according to any one of claims 1 to 6, wherein the number or size of the ring-type weights provided by being inserted through the metal pipe is set according to a weight load to be set.

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