JP5474715B2 - Plug - Google Patents

Description

  The present invention relates to a structure of a plug attached to an end of a blank constituting a fishing rod.

  For example, a fishing rod may be composed of a single rod-shaped member, but generally consists of a plurality of blanks having different outer diameters and inner diameters. When the fishing rod is composed of n blanks, the blanks are referred to as No. 1 and No. 2 in order from the smallest outer diameter, and the blank with the largest outer diameter is the original clause. The blank adjacent to is called the original upper section.

  Each blank is connected as a fishing rod having a predetermined length by being connected by a swing-out method or a splicing method. In the swing-out method, each blank is combined in a so-called nesting form, the first segment is extracted from the second segment, the second segment is extracted from the third segment, and similarly, the smaller blanks of adjacent blanks are extracted. When the blank is pulled out from the large-diameter blank, the fishing rod extends. In the splicing method, the rear end portion of the small-diameter blank is fitted to the front end portion of the large-diameter blank to form an elongated fishing rod.

  When the fishing rod is not used, each blank is stored in a nested manner. That is, a small-diameter blank is accommodated in a large-diameter blank. The fishing rod may be provided with a plug member attached to the tip of the original clause. This plug member prevents the blank stored in the original clause from popping out by being fitted into the original clause when the fishing rod is in the stored state.

  By the way, there are various types of fishing rods in order to cope with the type of target fish and the fishing ground environment. Therefore, the outer diameter and inner diameter of the original section also differ depending on the fishing rod model. Therefore, the conventional plug member is designed exclusively for the model, leading to an increase in the cost of the plug member and fishing rod. Conventionally, in order to solve such a problem, there has been proposed a plug member that can cope with the change in the inner diameter of the main clause (for example, see Patent Documents 1 to 4).

JP 2007-143474 A JP 2002-17210 A JP-A-10-191842 Japanese Patent Laid-Open No. 7-79667

  However, in order to cope with a change in the inner diameter of the original joint, the conventional plug body is simply made of an elastically deformable material, or has only a ridge formed on the plug body so as to be more easily elastically deformed. It is. Therefore, even if the conventional plug is attached to the main clause, there is a problem that it easily falls off the main clause.

  Therefore, an object of the present invention is to provide a plug that can be securely fixed to the main clause in response to a change in the inner diameter of the main clause.

  (1) A plug according to the present invention is made of an elastically deformable material, and has a main body in which an accommodation space is formed, and the accommodation in a state of being rotatable around a predetermined rotation center axis in the accommodation space. A core portion fitted in the space; and an operation portion rotatably connected to the main body and having the core portion fixed thereto. The core part includes an elliptical head whose outer dimension changes in a direction orthogonal to the rotation center axis when rotated.

  According to this configuration, in a state where the core part is fitted to the main body, the core part can rotate within the accommodation space of the main body. An operation unit is fixed to the core unit, and the operation unit is rotatably connected to the main body. Therefore, when the operation part is rotated, the core part rotates in the accommodation space. When the core portion rotates around the rotation center axis, the elliptical head also rotates, and the outer dimension in the direction orthogonal to the rotation center axis of the core changes. Since the main body can be elastically deformed, the outer dimensions of the main body are also changed by the rotating core.

  (2) It is preferable that the main body is made of rubber or resin having a hardness that can be press-fitted into the end of the blank. The core portion may include a head portion that is formed in a columnar shape having an elliptical cross section and a shaft portion that extends to the head portion. The accommodation space is formed so as to extend from one end surface of the main body to the inside, and includes a support hole into which the shaft portion can be fitted, and a holding hole that is continuous with the support hole and can accommodate and hold the core portion. May be. The shaft is inserted into the main body from the one end surface and is rotatably supported by the support hole, and the head is surrounded and held in a slidable manner with a wall surface defining the holding hole. Is preferred.

  In this configuration, since the main body is made of the above-described material, the main body is securely fixed to the end of the blank in a press-fitted state. The shaft portion of the core portion is supported by the main body in a state where the shaft portion is fitted in the support hole, and the head portion of the core portion is surrounded and held by the wall surface that defines the holding hole. That is, a structure of a shaft and a bearing is formed by the core portion and the main body, and the core portion is securely supported by the main body and is rotatable with respect to the main body. For this reason, the external dimensions of the main body change according to the rotation of the core portion.

  (3) It is preferable that the main body is formed in a cylindrical shape, and the housing space is opened on the outer surface of the main body.

  According to this structure, the operation | work which fits a core part in a main body is easy, and manufacture of a plug body becomes easy.

  According to the present invention, since the outer dimension of the main body changes as the core portion rotates, the outer dimension of the main body can be adjusted by rotating the operation portion. Therefore, when the main body is fitted into the end portion of the blank, the outer dimensions of the main body are changed according to the inner diameter of the end portion, so that the plug is securely fixed to various blanks having different inner diameters.

FIG. 1 is a view showing a plug 10 according to an embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a diagram illustrating the behavior of the main body 11 when the core member 12 rotates.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings as appropriate.

  FIG. 1 is a view showing a plug 10 according to an embodiment of the present invention. (A) is a front view, (b) is a right side view, and (c) is a left side view. 2 is a cross-sectional view taken along the line II-II in FIG.

  The plug 10 is attached to a fishing rod mainly composed of a plurality of blanks, and is press-fitted and fixed to an end portion of a blank (typically a main clause) constituting the fishing rod. Note that the plurality of blanks are connected in a swing-out form or a joint form to form a fishing rod having a predetermined length. The plug body 10 is characterized in that the external dimensions of the plug body 10 are appropriately changed in accordance with the inner diameter of the blank, so that the plug body 10 can be used for various types of fishing rods. Etc. can function as common parts.

  The plug 10 includes a main body 11, a core member 12 (corresponding to a “core part” recited in claims), and an operation cap 13 (corresponding to an “operating part” recited in claims). . The core member 12 is fitted in the main body 11 as shown in FIG. An end portion (right end portion in the drawing) of the core member 12 protrudes from the main body 11, and an operation cap 13 is provided on the core member 12. When the operation cap 13 is rotated, the core member 12 is also rotated, whereby the outer shape of the main body 11 is deformed as described later.

  The main body 11 can be made of acrylonitrile butadiene rubber (NBR), urethane rubber (U) or other rubber, as well as ethylene vinyl acetate copolymer (EVA) or other resin. In addition, the material which comprises the main body 11 will not be specifically limited if it is easy to elastically deform. Specifically, the hardness of the rubber or resin constituting the main body 11 is preferably 70 (JIS K6253 type A durometer hardness). However, the hardness of the main body 11 can be appropriately set in the range of 60-80.

  In the present embodiment, the main body 11 is formed in a cylindrical shape, and contains the accommodating chamber 15 (corresponding to the “rotation center axis” recited in the claims) in the interior along the axial direction 14. Corresponding to "accommodating space"). As shown in FIG. 2, the storage chamber 15 includes a support hole 16 and a holding hole 17, both of which are continuous along the axial direction 14. The support hole 16 has an opening on one end surface 18 of the main body 11, and extends from the opening to the inside of the main body 11. The holding hole 17 has an opening in the other end surface 19 of the main body 11, and extends from the opening to the inside of the main body 11. The holding hole 17 communicates with the support hole 16 inside the main body 11.

  The support hole 16 is formed in a circular shape, and the inner diameter of the support hole 16 corresponds to the outer diameter of the shaft portion 20 of the core member 12 described later. Further, the holding hole 17 is formed in an elliptical shape as shown in FIG. The shape of the holding hole 17 corresponds to the shape of the head 21 of the core member 12 described later. That is, the holding hole 17 has an oval shape by the wall surface 22 defining the holding hole 17, and the wall surface 22 surrounds and holds the head 21.

  The core member 12 can be made of metal or a resin having a hardness of 90 (JIS K6253 type A durometer hardness) or more. In addition, the material which comprises the core member 12 is not specifically limited, What is necessary is just to have sufficient hardness in order to elastically deform the main body 11 when the said core member 12 contacts the main body 11. As shown in FIGS. 2 and 1C, the core member 12 has the shaft portion 20 and the head portion 21, both of which are continuous.

  The shaft portion 20 is formed in a cylindrical shape having a circular cross section. The head 21 is formed in a columnar shape having a cross-sectional shape that is elliptical. Both are integrally formed with the central axis of the shaft portion 20 and the central axis of the head portion 21 coinciding with each other. As shown in FIG. 2, the core member 12 is fitted into the storage chamber 15 of the main body 11, and in this state, the central axes of the shaft portion 20 and the head portion 21 are arranged along the axial direction 14. Specifically, the shaft portion 20 passes through the support hole 16 of the accommodation chamber 15 and is supported by the inner wall surface of the support hole 16. The head 21 is disposed in the holding hole 17 and is surrounded and held by the wall surface 22 that defines the holding hole 17. However, the head 21 is slidable with the wall surface 22 in this state. Accordingly, when the shaft portion 20 is rotated, the head portion 21 is also rotated. However, since the head portion 21 has an elliptical shape, the holding hole 17 is pressed and deformed by the head portion 21.

  As shown in FIG. 2, the operation cap 13 is fixed to the end surface 23 of the shaft portion 20. The operation cap 13 is formed in a circular container shape (see FIG. 1) and is fitted on the end of the main body 11. The operation cap 13 can rotate with respect to the main body 11. Therefore, when the operation cap 13 is rotated, the shaft portion 20 and the head portion 21 are also rotated in the storage chamber 15.

  The assembly procedure of the plug 10 is as follows. That is, the core member 12 is fitted into the storage chamber 15 of the main body 11. At this time, the shaft portion 20 of the core member 12 is inserted from the holding hole 17 side to the support hole 16 side. With the shaft portion 20 penetrating the support hole 16, the head portion 21 of the core member 12 is fitted into the holding hole 17 (see FIGS. 2 and 1C). The operation cap 13 is fixed to the shaft portion 20 penetrating the support hole 16, and the operation cap 13 is fitted to the main body 11.

  FIG. 3 is a diagram illustrating the behavior of the main body 11 when the operation cap 13 is rotated and the shaft portion 20 and the head portion 21 are rotated.

  As shown in FIG. 6A, the head 21 of the core member 12 has an elliptical shape, and therefore the outer dimensions of the head 21 in the N1 direction and the N2 direction are different. Here, the N1 direction is a direction orthogonal to the axial direction 14, and the N2 direction is a direction orthogonal to the N1 direction and orthogonal to the axial direction 14. That is, the outer dimension in the N1 direction of the head 21 is L2, and the outer dimension in the N2 direction is L1 (L2> L1). In the figure, when the core member 12 is rotated around the axial direction 14 (direction perpendicular to the paper surface), the outer dimension L2 in the N1 direction and the outer dimension L1 in the N2 direction of the head 21 change.

  When the head 21 is rotated by 90 ° (degree), since the head 21 is surrounded by the wall surface 22 of the holding hole 17, the head 21 presses the wall surface 22 and deforms the main body 11. Specifically, as shown in FIG. 5B, the main body 11 is extended in the N2 direction by the head 21, and the outer dimension L1 in the N2 direction is increased by the dimension 2s. That is, when the operation cap 13 is rotated, the outer shape of the main body 11 is expanded or contracted by the dimension 2s.

  When the plug body 10 according to the present embodiment is fitted into the tip of the blank, the external dimensions of the main body 11 of the plug body 10 change, so that the plug body 10 is securely mounted and fixed to various blanks having different inner diameters. As a result, the plug 10 can be used as a common part for various types of fishing rods and the like.

  In particular, in this embodiment, since the main body 11 is made of rubber or resin that is easily elastically deformed, the plug 10 can be securely fixed to the blank in a press-fitted state. Therefore, the plug body 10 is prevented from easily falling off the blank regardless of the inner diameter of the blank.

  In addition, since the rotation angle of the operation cap 13 is equal to the rotation angle of the core member 12, the external dimensions of the main body 11 change according to the rotation angle of the operation cap 13. Therefore, the external dimension of the main body 11 can be appropriately adjusted corresponding to the inner diameter of the blank.

  Further, in the present embodiment, the storage chamber 15 in which the core member 12 is accommodated is opened on the one end face 18 and the other end face 19 of the main body 11, and the main body 11 is formed in a cylindrical shape. There is an advantage that the operation of fitting the plug body 10 into the main body 11 is simple and the assembly work of the plug body 10 is easy.

DESCRIPTION OF SYMBOLS 10 ... Plug body 11 ... Main body 12 ... Core member 13 ... Operation cap 14 ... Axial direction 15 ... Storage chamber 16 ... Support hole 17 ... Holding hole 18 ... -One end surface 19 ... The other end surface
20 ... Shaft 21 ... Head
22 ... Wall 23 ... End face

Claims (3)

A main body made of an elastically deformable material and having a housing space formed therein,
A core portion fitted in the accommodation space in a state of being rotatable around a predetermined rotation center axis in the accommodation space;
An operation unit rotatably connected to the main body and having the core unit fixed thereto;
The said core part is a stopper provided with the elliptical head from which the external dimension of the direction orthogonal to the said rotation center axis changes by rotating. The main body is made of rubber or resin having a hardness that can be press-fitted into the end of the blank,
The core portion has a head portion formed in a columnar shape with an elliptical cross section and a shaft portion extended to the head portion,
The housing space is formed so as to extend from one end surface of the main body to the inside, includes a support hole into which the shaft portion can be fitted, and a holding hole capable of housing and holding the core portion, continuing to the support hole,
The shaft portion is inserted into the main body from the one end surface and is rotatably supported by the support hole, and the head is surrounded and held slidably with a wall surface defining the holding hole. Item 1. The plug according to item 1. The plug body according to claim 1 or 2, wherein the main body is formed in a cylindrical shape, and the housing space is opened on an outer surface of the main body.

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