JP2537154B2 - Fishing rod and method of manufacturing fishing rod - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a fishing rod having a plug body screwed thereto and a manufacturing method thereof.

[Prior art]

In order to store the middle rod in the swing fishing rod, a plug body such as an upper plug or a butt plug is screwed to the tip or the end thereof.

[Problems to be Solved by the Invention]

However, in conventional plugs, the screwing often loosens due to contact with other objects during carrying or use, resulting in loss and loss.Therefore, loosening is prevented by screwing through a washer or a tightening ring. The current situation. In view of these circumstances, it is an object of the present invention to provide a fishing rod that can be screwed without loosening a plug without using a washer or a tightening ring, and a manufacturing method thereof.

Means for Solving the Problems In order to achieve the above object, the present invention allows a male screw portion formed on an outer peripheral surface of a plug body to be detachably attached to a female screw portion formed on an inner peripheral surface of one end portion of a tubular rod body. The rod body or the plug body is screwed to form a flexible material, and the thread groove of the female screw portion or the male screw portion of the flexible material is formed with a high and low portion in the radial direction to form a diameter in the screw portion. The feature is that the elastic deformation in the direction is allowed. The tubular rod body can be made to have flexibility by forming a prepreg wound in a conventional fishing rod manufacturing process and subjecting it to a thermosetting treatment, and when the plug body is made of a flexible material. Is made of rubber or synthetic resin. In order to manufacture the fishing rod of the present invention, the outside of the flexible tubular rod body is pressure-deformed from a plurality of directions, and the inner peripheral surface is rotationally cut in this pressure-deformed state, and then the pressurizing means is used. In the released state, the inner peripheral surface is further rotationally cut to form high and low portions in the female screw groove. As means for pressurizing and deforming the flexible tubular rod body, it is usual to pressurize and deform the cross-section of the tubular rod body into an elliptical shape by applying pressure from opposite directions and pressurizing and deforming from three directions to three directions. There are cases.

[Action]

At least one of the tubular rod body and the plug body screwed to the tubular rod body in the fishing rod of the present invention is formed of a flexible material, and one screw groove in the screwed portion is formed high and low, and the screw The bottom of the groove is elastically coupled to the screw groove of the other screw portion to prevent the screw portion from loosening during use. Further, in the method for manufacturing a fishing rod of the present invention, the flexible tubular rod body is deformed under pressure from a plurality of directions, and the female screw groove is formed by the ordinary rotary cutting means in this pressure deformed state, and then the pressure means is released. It is possible to manufacture a fishing rod having high and low portions in the female thread groove formed on the inner peripheral surface of the flexible tubular rod body.

【Example】

The present invention will be described in detail with reference to the drawings. A female screw portion 2 is formed at a base end portion of a flexible tubular rod body 1 which is formed by winding a prepreg and heat-curing the same as conventionally known. At the same time, a male screw portion 4 of a flexible plug 3 made of synthetic resin, rubber or the like is detachably attached to the female screw portion 2. As shown in FIG. 3, the height of the screw groove of the female screw portion 2 is high at the upper and lower portions thereof as 2'and the height of the groove of the left and right portions is as low as 2 ". The height of the screw groove of the male screw portion 4 of the plug body 3 is formed uniformly like an ordinary screw groove, and thus the plug body 3 is attached to the female screw portion 2 of the tubular rod body 1 as described above.
When the male screw portion 4 of is screwed, the low screw groove 2 ″ of the female screw portion 2 is screwed and coupled to the screw groove of the male screw portion 4 in an elastic state to strengthen the screwing action of both and to relax during use. In the embodiment shown in Fig. 6 and Fig. 7, the height of the thread groove of the female thread portion 2 of the tubular rod body 1 is made uniform while the plug body 3 made of a flexible material is provided. The height of the screw groove of the male screw portion 4 is such that the upper and lower portions are as high as 4'and the left and right portions are as low as 4 ". Next, a method of manufacturing a fishing rod in which the high and low portions are formed in the screw groove of the female screw portion 2 of the tubular rod body 1 of the present invention will be described. It is constructed by winding a prepreg and thermosetting it as well known. The tubular rod body 1 is pressed from above and below by the pressurizing means 5 to deform the tubular rod body 1 into an elliptical cross section, and then the inner peripheral surface of one end of the tubular rod body 1 is formed into a normal screw groove in this pressed and deformed state. When rotational cutting is performed by the means, the thread groove in the major axis direction of the tubular rod body 1 deformed under pressure into an elliptical shape is shallow, and the thread groove in the short holding direction is deeply cut and formed, and the pressure means 5 is released to release the tubular rod. When the body 1 is returned to the old state by the flexible restoring force, the tubular rod body 1 in which the height of the screw groove is more significantly formed is manufactured. Further, the pressurizing means 5 can also pressurize from three sides as shown in FIG. 10, and in this case, the height of the screw groove of the female screw portion 2 is
It is formed as shown in Fig. 11.

【The invention's effect】

In the fishing rod according to the present invention, one or both of a tubular rod body and a plug body which is detachably screwed to one end thereof is formed of a flexible material, and a screw of a threaded portion of the one flexible material is formed. Since the groove is formed with high and low portions in the radial direction and screwed so as to elastically deform in the radial direction, in addition to the screwing action of the screwed portion, the lower portion of the screw groove is elastically pressed against the other screw portion. Screwed together,
It is possible to reliably prevent loosening during use of the fishing rod, it is easy to attach and detach the plug body, the screw is not damaged even if it is attached or detached again, it has excellent durability, and the plug body comes off due to the loosening of the screwed portion as in the past The plug body can be securely screwed onto the tubular rod body without loss, washer, or use of a tightening ring. Further, according to the method of the present invention, the high and low deformation processing of the screw groove in the female screw portion of the tubular rod body is simply and surely performed by the rotary cutting process which is the conventional screw groove forming means only by using the pressing means of the tubular rod body together. It has an excellent characteristic that a fishing rod having a high and low thread groove of the female screw portion can be manufactured economically and easily.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a fishing rod of the present invention, FIG. 2 is a vertical sectional front view of the tubular rod body, and FIG. 3 is a sectional view taken along line AA of FIG.
FIG. 4 is a front view of the plug, FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4, FIG. 6 is a vertical sectional side view of a tubular rod body of another embodiment of the present invention, and FIG. 7 is the plug. FIG. 8 is a vertical sectional side view of the body, FIG. 8 is a front view showing the manufacturing process of the present invention, FIG. 9 is a vertical sectional side view of the same, FIG. 10 is a vertical sectional side view showing the other manufacturing process of the present invention, and FIG. It is a vertical side view of the fishing rod by the same method. 1 ... Tubular rod body, 2 ... Female thread part, 3 ... plug body, 4 ...
Male screw part, 5 ... Pressurizing means.

Claims (2)

(57) [Claims] 1. A flexible material made of a flexible material for the rod body or the plug body by removably screwing a female screw portion formed on the inner peripheral surface of one end of the tubular rod body to a male screw portion formed on the outer peripheral surface of the plug body. It is characterized in that the high and low portions are formed in the screw groove of the female screw portion or the male screw portion of the flexible material in the radial direction to allow elastic deformation in the screw portion in the radial direction. fishing rod. 2. The flexible tubular rod body is deformed under pressure from a plurality of directions, the inner peripheral surface is rotationally cut in this pressure-deformed state, and then the pressure means is released. A method for manufacturing a fishing rod, characterized in that the peripheral surface is further rotationally cut to form high and low portions in a female screw groove.