JP3107801U - Fishing weight - Google Patents

Abstract

An object of the present invention is to securely fix a weight with respect to a fishing line on a straight line centering on the line.
A weight main body, a pair of tapered guide shafts protruding from both sides of the main body, a pair of caps that surround the outer periphery of each guide shaft and are fitted to both ends of the main body. 5, the fishing line 14 is placed along the outer periphery of the main body and the guide shaft through the center hole 12 of one cap, the fishing line 14 is passed through the center hole 12 of the other cap, and then the cap is fitted to both ends of the main body. In the fishing weight in which the weight is fixed along the fishing line, a threading groove 8 is formed on the outer periphery of the main body along the longitudinal direction thereof, and is flattened on the side facing the groove of the guide shaft. A guide surface 9 was formed.
[Selection] Figure 2

Description

  The present invention relates to a fishing weight that can be fixed to a fishing line easily and reliably, has low subsidence in water, and has low floating resistance on the water, and is friendly to the environment.

When fishing, a weight is usually attached to drop the device into the water. Conventionally, for ease of mounting, lead plate weights or lead crushing weights called gun balls are often used. However, when the device was left in the water due to the root, etc., environmental pollution due to lead became a problem.
Therefore, a tungsten weight having a relatively heavy specific gravity has been developed instead of lead. However, the weight of this weight is 0.5 g to 1.0 g at most, so it is difficult to mount, and in the mounting structure, the subsidence resistance in water, There was a problem that the levitation resistance to is large.

Moreover, in order to improve such a point, the weight shown in the following patent document 1 is developed. This comprises a weight body, a pair of guide shafts projecting on both sides of the weight body, and a pair of caps that surround the outer periphery of each guide shaft and fit to both ends of the body. The fishing line is passed along the outer circumference of the weight body and the guide shaft through the opened hole, then the fishing line is passed through the hole opened in the other cap, and then both caps are fitted to both ends of the main body so that the weight is turned into the fishing line. It is fixed along. In this structure, since the groove for introducing the fishing line is cut on the outer periphery of the weight main body, the fishing line is not extremely bent at the joint portion with the weight and on both sides of the weight main body. Is sandwiched between the guide shaft and the cap, and is firmly fixed by the frictional force.
JP 2000-166448 A

  However, in this structure, since the guide shaft has a tapered round bar shape, the thread at this fitting position is not necessarily the same as the thread at the groove position when the cap is fitted after passing the thread. It may not be on the line, and it may be twisted to the left and right with respect to the thread at the groove position. As a result, the mounting posture of the weight is inclined with respect to the fishing line, and the fishing line is not aligned with the fixed position of the weight There were many, and the probability of occurrence of center shake and twisting was high.

  The present invention solves the above-mentioned problems, and its object is to provide a fishing weight that can be fixed in a straight line with the fishing line as a center in a fixed state with respect to the fishing line. It is.

  In order to achieve the above object, the present invention surrounds the weight body 1, the pair of tapered guide shafts 2 and 3 projecting on both sides of the body, and the outer circumferences of the guide shafts at both ends of the body. A pair of caps 4 and 5 to be fitted are provided, and the fishing line 14 is placed along the outer periphery of the weight body 1 and the guide shafts 2 and 3 through the insertion hole 12 opened in the center of one cap, and is opened to the other cap. In the fishing weight in which the fishing line 14 is passed through the insertion hole 12 and then the caps 4 and 5 are fitted to both ends of the main body 1 to fix the weight along the fishing line 14, the weight main body 1 The fishing line introduction threading groove 8 is formed along the longitudinal direction on the outer circumference of the guide shaft, and a flattened guide surface 9 is formed on the side of the guide shaft facing the groove. It is.

  In the invention of claim 2, the insertion holes 7 of the guide shafts 2 and 3 are opened through the centers of both sides of the weight body 1, the insertion holes 7 are non-circular, and the guide shafts The guide base 9 is inserted into the threading groove 8 while the guide shafts 2 and 3 are inserted and fixed in the weight body 1. It is characterized by being positioned in a detent state in a state of being directed.

  The invention of claim 3 is characterized in that at least one of the caps has a shell shape.

  The invention according to claim 4 is characterized in that the weight body 1 is made of tungsten or an alloy of tungsten.

  In the above configuration, the flat guide surface 9 formed at the tip of the guide shafts 2 and 3 serves as a stable installation surface with respect to the fishing line 14, so that the fishing line 14 is straight when the caps 4 and 5 are fitted. Therefore, it is possible to suppress the occurrence probability of center blurring or twisting.

  In the invention of claim 2, when the guide shafts 2 and 3 are fitted to the weight body 1, the threading groove 8 of the weight body 1 and the guide surface 9 of the guide shaft are uniquely positioned, and the fitting assembly Work is easy.

  According to the third aspect of the present invention, it is possible to reduce the sinking resistance when the weight is dropped in water and the floating resistance when the weight is pulled up.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded view of a fishing weight according to the present invention and an exploded view in a plane cross section, a cross-sectional view taken along line AA and BB, and FIG. 2 is a perspective view showing an assembly procedure for the fishing line of the weight.

  First, in FIG. 1, the fishing weight is a weight body 1 made of tungsten or its alloy having a substantially bowl shape, a pair of guide shafts 2 and 3 projecting from the left and right (or top and bottom) of the weight body 1, and a weight body. 1 and caps 4 and 5 fitted to both longitudinal ends.

  In FIG. 1, the guide shafts 2 and 3 are drawn separately from the main body 1. However, the guide shafts 3 and 4 are actually connected to the main body 1 in advance. The shaft-equipped main body 1 and the caps 4 and 5 are sold as a set, and the weights thereof are about 0.5 g, 0.7 g, and 1.0 g, and the dimensions are in accordance with them.

  The main body 1 is made by the MIM molding method, and is a mixture of granulated tungsten powder and nylon resin, injection molded while vulcanized with an injection molding machine, completed through a degreasing and sintering process, It has a cylindrical shape and is formed with tapered tapers 6 on both sides in the longitudinal direction, and an insertion hole 7 for fitting and fixing the base portion of the guide shaft 2 is opened at the center of each taper 6. . In addition, a pair of threading grooves 8 are formed in the outer periphery of the weight body 1 along the both sides in the longitudinal direction.

  The projecting portion of the guide shafts 2 and 3 from the main body 1 is tapered toward the distal end side, and a guide surface 9 cut horizontally is formed on one surface of the distal end portion. The insertion hole 7 has a variable cross-sectional shape obtained by cutting off a part of a circle. Correspondingly, the insertion base 10 of the guide shafts 2 and 3 has the same outer shape, that is, one side of the round bar is horizontally disposed. The guide surface 9 is uniquely positioned on the same surface side as the threading groove 8 in a state where the insertion base 10 is fitted to the main body 1. It has become.

  Each of the caps 4 and 5 has a bullet-shaped shape made of a soft synthetic resin injection molded body or a curved outer shape similar thereto, and the inside thereof has a taper 11 corresponding to the taper 6 of the main body 1 and the center of the taper 11. The threading hole 12 is opened.

  In order to attach the above weight to the fishing line, the upper and lower caps 4 and 5 are inserted in a state of facing the fishing line 14 as shown in FIG. At this time, since the inner taper 11 can be inserted into the threading hole 12 as a guide, the threading operation can be easily performed.

  Next, as shown in (b), the main body 1 is positioned between the caps 4 and 5, and the fishing line 14 is positioned so as to fit into the threading groove 8. In the state where the fishing line 14 is tensioned, the guide surfaces 9 of the guide shafts 2 and 3 are positioned on the vertical extension thereof.

  From this state, the main body 1 is fitted to the lower cap 5 as shown in FIG. In order to fit, as shown by the arrow, both are pushed relatively. Thereafter, by pulling the lower side of the fishing line 14, the fishing line 14 is positioned on the guide surface 9 of the lower side guide shaft 3 which is the most stable position inside the cap 5 and is held on the same line as the threading groove 8. Thus, the cap 5 is elastically deformed and frictionally held in a stable state between the inner surface of the cab 5 and the guide shaft 3.

Next, as shown in (d), when the upper cap 4 is fitted to the upper side of the main body 1 in the same manner, the upper and lower sides of the main body 1 are covered with the caps 4 and 5, and the attachment of the weight is completed. .
In the mounted state, the longitudinal direction of the weight is completely parallel to the tension direction around the fishing line 14 and is not twisted or tilted at all.
Needless to say, the obtained weight is streamlined by crowning the caps 4 and 5, and the sinking resistance when the weight is dropped in water and the floating resistance when the weight is pulled up can be reduced. In the above embodiment, the cross-sectional shape of the main body 1 is a perfect circle, but various cross-sectional shapes such as a polygon, an ellipse, a saddle shape, and a pie shape can be taken.

It is the exploded view in the side and flat cross section of the fishing weight which concerns on this invention, and sectional drawing in an AA line and a BB line. (A)-(d) is a perspective view which shows the procedure which assembles the same weight in a fishing line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Weight main body 2,3 Guide shaft 4,5 Cap 6,11 Taper 7 Insertion hole 8 Threading groove 9 Guide surface 10 Guide shaft insertion base 12 Threading hole 14 Fishing line

Claims (4)

A weight body, a pair of tapered guide shafts projecting on both sides of the body, and a pair of caps that surround the outer periphery of each guide shaft and fit to both ends of the body, the center of one cap Fix the weight along the fishing line by fitting the fishing line along the outer circumference of the weight body and the guide shaft through the hole, passing the fishing line through the center hole of the other cap, and then fitting the cap to both ends of the body. In the fishing weight,
A threading groove for introducing the fishing line is formed along the longitudinal direction of the outer periphery of the weight body, and a flattened guide surface is formed on the side of the guide shaft facing the groove. Fishing weight.   An insertion hole of the guide shaft is opened through both sides of the weight main body, the insertion hole is non-circular, and the insertion portion of the guide shaft is inserted into the insertion hole closely. 2. The fishing weight according to claim 1, wherein the fishing weight is formed in a perfect circle shape and is positioned in a detent state in a state where the guide shaft is inserted into and fixed to the weight body and the guide surface faces the threading groove. .   The fishing weight according to claim 1 or 2, wherein at least one of the caps has a shell shape.   The fishing weight according to any one of claims 1 to 3, wherein the weight main body is made of tungsten or an alloy of tungsten.

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