Sinker
The modular fishing sinker with a detachable weight and integrated light source simplifies weight adjustments and light maintenance, addressing the inefficiencies and costs of traditional sinker systems while improving fishing effectiveness.
Patent Information
- Application Number
- JP2023169817
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-29
- Publication Date
- 2025-04-10
AI Technical Summary
Existing fishing sinkers require significant effort and cost to change weights, as multiple sinkers of different weights must be prepared and reconnected to the fishing line.
A modular fishing sinker design featuring a detachable weight component and an integrated light source, allowing for easy weight adjustments and light source maintenance without disconnecting the fishing line.
Enables effortless weight changes and convenient light source management, reducing labor and manufacturing costs while enhancing fishing efficiency and attracting fish.
Smart Images

Figure 2025059614000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a fishing sinker. [Background technology]
[0002] Patent Document 1 discloses a fishing device that has arrow-shaped feathers for creating buoyancy along the longitudinal direction of the outer periphery of a hollow capsule (sinker) containing a sounding ball or the like (see paragraphs 0028 to 0030 of the specification). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Registered Utility Model No. 3027031 Summary of the Invention [Problem to be solved by the invention]
[0004] Incidentally, when fishing using a sinker, the weight of the sinker is generally changed as appropriate depending on the type of target fish and the method of fishing. When fishing, a plurality of sinkers of different weights may be prepared in advance, and the weight of the sinker may be changed depending on the situation. However, it is time-consuming to detach the sinker from the line (fishing line) and re-tie the line to the sinker in order to change the weight of the sinker.
[0005] In addition, preparing multiple sinkers with wings according to weight, as in Patent Document 1, requires more effort and costs to manufacture than preparing multiple sinkers with a simple shape. For this reason, it is desirable to be able to change the weight of a sinker with wings without incurring the effort and cost of manufacturing.
[0006] The present invention has been made in view of the above-mentioned points, and its object is to make it possible to easily change the weight of a feathered sinker. [Means for solving the problem]
[0007] The first invention relates to a fishing sinker, which, when its sinking direction in water is downward and the opposite direction to the sinking direction is upward, comprises a first member having a line connecting portion for connecting a line and one or more blades extending in the up-down direction below the line connecting portion, and a second member acting as a weight, which is provided below the first member and is detachable from the first member.
[0008] In the first invention, the second member as a sinker is detachable from the first member having the line connecting portion, so the second member can be replaced to change to one with a different weight while the line is tied to the first member. In other words, if multiple second members with different weights are prepared, the weight of the sinker can be easily changed without having to re-tie the line to the sinker in order to change the weight of the sinker.
[0009] The second invention, in the first invention, further includes a light source member that irradiates light toward the outside of the sinker, and at least one of the first member and the second member is provided with a storage section in which the light source member is stored, and the light source member is exposed to the outside so that it can be removed from the storage section when the second member is detached from the first member.
[0010] It is known that shining light on certain types of fish has a fish-attracting effect. This second invention is provided with a light source member that irradiates light outward from the sinker, and therefore has a fish-attracting effect on the certain types of fish. Furthermore, the light source member can be removed from the housing when the second member is removed from the first member. This is convenient because the light source member can be easily removed from the sinker when it is not needed, and the light source member can be easily maintained. Effect of the Invention
[0011] As described above, according to the present invention, the weight of a winged sinker can be easily changed. [Brief description of the drawings]
[0012] [Figure 1] FIG. 2 is a perspective view showing a sinker according to an embodiment. [Diagram 2] FIG. 2 is a front view showing a sinker according to the embodiment. [Diagram 3] FIG. 2 is a side view showing a sinker according to the embodiment. [Figure 4] FIG. 2 is a plan view showing a sinker according to the embodiment. [Diagram 5] FIG. 2 is a bottom view showing the sinker according to the embodiment. [Figure 6] FIG. 2 is an exploded perspective view showing a sinker according to an embodiment. [Figure 7] FIG. 4 is a perspective view showing a plurality of second members having different weights. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its application or its uses.
[0014] (Embodiment) 1 to 6 show a fishing sinker S according to an embodiment. In the following, the sinking direction of the sinker S in water (downward in Figs. 2 to 3) is referred to as down, and the opposite direction to the sinking direction (upward in Figs. 2 to 3) is referred to as up. The sinker S includes a first member 1, a second member 2 as a weight that is provided below the first member 1 and is detachable from the first member 1, and a light source member 3 that irradiates light outward from the sinker S.
[0015] -First component- The first member 1 has an eye 10 (line connecting portion) for connecting a line (not shown), four blades 11, ..., 11 provided below the eye 10, and a tubular portion 12 provided below the blades 11, ..., 11 which engages with the upper part of the second member 2.
[0016] Each of the blades 11 is formed in a long, flat, thin plate shape in the vertical direction, and extends downward from the lower portion of the eye 10 in the vertical direction. As shown in FIG. 4, the four blades 11, ..., 11 are provided at equal intervals so as to form an angle of 90° with each other in a plan view. As shown in FIGS. 2 to 4, a cavity 13 communicating with both sides of each blade 11 is provided inside the sinker S from the lower portion of the four blades 11, ..., 11 further below. As shown in FIG. 4, the cavity 13 opens to the outside of the sinker S between the adjacent blades 11, 11. The cavity 13 constitutes the upper side of the housing portion in which the light source member 3 is housed.
[0017] 6, the tubular portion 12 has a vertical axis and is formed in a generally cylindrical shape with its interior communicating with the hollow portion 13 at the top. A plurality of grooves 14 are provided on the inner periphery of the tubular portion 12 for engaging with the upper portion of the second member 2.
[0018] The first member 1 is made of a transparent or light-transmitting material so that the light from the light source member 3 can be easily irradiated to the outside of the sinker S. The first member 1 is made of, for example, resin.
[0019] -Second component- As shown in Fig. 6, the second member 2 has an engagement portion 20 at its upper part for engaging with a groove 14 provided inside the tube portion 12 of the first member 1. The engagement portion 20 is formed in a substantially cylindrical shape with the vertical direction as the tube axis direction. A resin cover member 21 having a substantially bottomed tube shape that opens upward is fitted inside the engagement portion 20. The inside of the cover member 21 forms the lower side of the accommodation portion in which the light source member 3 is accommodated, and the lower part of the light source member 3 is engaged from above.
[0020] The second member 2 has a weight portion 22 provided below the engagement portion 20. The weight portion 22 is formed so that the upper portion is cylindrical and the lower portion tapers downward (toward the tip).
[0021] The second member 2 is made of a material having sufficient weight as a weight, for example, a metal such as lead. As shown in Fig. 7, second members 2 2a to 2d having different weights and different vertical lengths of the weight portion 22 are prepared in advance, and the weight of the sinker S can be changed by removing the second member 2 from the first member 1 and replacing it with one of an appropriate weight.
[0022] --Light source components-- The light source member 3 has a main body member 30 provided with an LED (not shown), and a lid member 31 attached to the top of the main body member 30. Both the main body member 30 and the lid member 31 are formed in a substantially circular shape in a plan view. The lid member 31 covers the LED from above, and is transparent or translucent so that light emitted by the LED can be transmitted through the lid member 31.
[0023] As shown in Fig. 6, the light source member 3 has a battery 32 for emitting light from the LED. A pair of metal pieces 33, 33 electrically connected to the positive and negative electrodes of the battery 32, respectively, are exposed on the outer circumferential surface of the main body member 30. Only one of the metal pieces 33 is shown in Fig. 6. The other metal piece 33, not shown, is exposed on the outer circumferential surface of the main body member 30 on the side opposite to the metal piece 33 shown in Fig. 6.
[0024] Inside the main body member 30, a board (not shown) is provided for electrically connecting the LED, the battery 32, and the pair of metal pieces 33, 33 to each other, thereby causing the LED to emit light. The board has a circuit configuration in which, when the two metal pieces 33, 33 are electrically connected to each other, a current flows through the LED due to the electromotive force of the battery 32. When the sinker S is in seawater, the hollow portion 13 is filled with seawater, so that the exposed metal pieces 33, 33 are exposed to the seawater and are electrically connected to each other through the seawater. As a result, a current flows through the LED, causing the LED to emit light. With the above configuration, the light source member 3 emits light in seawater.
[0025] The main body member 30 of the light source member 3 has, at the bottom, a cylindrical portion 34 into which the battery 32 is inserted. The outer peripheral surface of the cylindrical portion 34 and the inner peripheral surface of the cover member 21 are each formed with a screw thread for engaging with each other.
[0026] The lid member 31 of the light source member 3 is exposed to the outside so that the light source member 3 can be taken out from inside the cover member 21 when the second member 2 is detached from the first member 1.
[0027] --Action and Effects-- In this embodiment, the second member 2 is detachable from the first member 1 having the eye 10, so the second member 2 can be replaced with one having a different weight while the line is tied to the first member 1. In other words, if multiple second members 2 with different weights are prepared, the weight of the sinker S can be easily changed without having to re-tie the line to the sinker S in order to change the weight of the sinker S.
[0028] In this embodiment, the first member 1 has a plurality of thin plate-like blades 11, ..., 11 formed flat along the vertical direction, so that the posture of the sinker S is stabilized by the resistance of the blades 11, ..., 11 against the water flow in the water. In particular, the resistance of the blades 11, ..., 11 against the water flow in the water suppresses the rotation in the horizontal direction (i.e., the rotation about the vertical direction as the rotation axis). In addition, since the second member 2 as a weight is provided below the first member, the weight of the second member 2 makes it easy for the second member to sink while maintaining the posture below the first member in the water. With the above configuration, according to the sinker S of this embodiment, the entire device is easy to move more naturally so that fish can easily bite the lure (or live bait) in the water.
[0029] Incidentally, it is known that irradiating light has a fish-attracting effect on certain kinds of fish (for example, filefish, tilefish, and flounder) and octopus. This embodiment is provided with a light source member 3 that irradiates light outward from the sinker S, and thus has a fish-attracting effect on the above-mentioned fish and octopus. In addition, the light source member 3 can be removed from inside the cover member 21 (the storage section) when the second member 2 is removed from the first member 1. This is convenient because the light source member 3 can be easily removed when it is not needed, and the light source member 3 can be easily maintained.
[0030] (Other embodiments) The first member 1 does not have to be transparent. When the first member 1 is not transparent, in order to irradiate the light of the light source member 3 to the outside of the sinker S, for example, the area of the cavity 13 opening to the outside of the sinker S may be made large.
[0031] With regard to the storage section that houses the light source member 3, in the above embodiment, the hollow portion 13 of the first member 1 forms the upper side of the storage section, and the interior of the cover member 21 of the second member forms the lower side of the storage section, but the storage section may be provided in only one of the first member 1 and the second member 2.
[0032] In the embodiment described above, the number of the blades 11, . . . , 11 provided on the first member 1 is four, but the number of the blades 11 may be one or more.
[0033] The sinker S according to the present invention only needs to be such that the second member 2 as a weight is detachable from the first member 1 having the blades 11, . . . , 11, and the light source member 3 is not essential. [Industrial Applicability]
[0034] The present invention is useful as a fishing sinker. [Explanation of symbols]
[0035] 1 First member 2 Second member (weight) 3 Light source components 10 Eye (line joint) 11 Feather 12 Cylinder part 13 Cavity (container) 14 groove 20 Engagement part 21 Cover member (storage section) 22 Weight 30 Main body parts 31 Lid member 32 Battery 33 Metal piece 34 Cylindrical section
Claims
1. A fishing sinker, In the case where the sinking direction in water is defined as downward and the opposite direction to the sinking direction is defined as upward, A first member having a line connecting portion for connecting a line and one or more blades extending in a vertical direction below the line connecting portion; a second member as a weight provided below the first member and detachable from the first member; A sinker.
2. 2. The sinker according to claim 1, Further comprising a light source member that irradiates light toward the outside of the sinker, At least one of the first member and the second member is provided with a housing portion in which the light source member is housed, A sinker, wherein the light source member is exposed to the outside so as to be removable from the housing portion when the second member is detached from the first member.
Citation Information
Patent Citations
fishing tackle
JP3027031U