JP2704508B2 - Open end connection structure of frame rod for scooping net - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open end connecting structure of a frame rod for a scooping net.

[0002]

2. Description of the Related Art A conventional open end connecting structure of a frame rod for a scooping net is provided with one open end of a C-shaped frame rod 20 as shown in FIGS. 20a is formed in a square rod-shaped fitting square rod part 21, and a screw rod 22 is protruded from the fitting square rod part 21 toward the outside of the frame rod 20, and the other open end part is formed.
20b is provided with a fitting hole to be fitted and inserted into the screw rod 22, and a square fitting part 23 fitted from the outside of the frame rod 20 to the fitting square rod part 21; The screw rod 22 of the open end portion 20a is inserted into the fitting hole of the other open end portion 20b, and the fitted portion 23 is fitted to the fitting square rod portion 21, and the other open end portion 20b When the handle or the handle attaching portion 24 is screwed onto the screw rod 22 protruding from the fitting hole of the frame rod 20, the open end portion 20a
20b were connected and fixed in a non-rotating manner.

On the other hand, a scooping net having such a structure for connecting the open ends of the frame rods for the scooping net seems to have insufficient strength if it is found that the open ends of the frame rods are separated. And the anti-rotation effect also appears to be weak, so it is generally preferred that the connecting portions of the open ends do not appear to be separated from the inside of the frame rod, and that they appear to be a solid integral shape .

For this reason, in the above-described conventional connection structure, as shown in FIG.
Is seen from the inside of the frame rod 20, and it can be seen that the open ends 20a and 20b are separated.

The open ends 20a and 20b are integrally formed by forging.
-Since 20b has different male / female shapes, separate molding dies are required for each, and mold manufacturing costs increase.

In addition, in the case of forging, in particular, a large amount of useless material is produced. However, since one open end 20a integrally forms the screw rod 22, a large amount of molding material is required.
The amount of wasted material generated during this molding is very large, and the material efficiency is poor. For this reason, expensive materials cannot be used, and there is a problem that the appearance of the connecting portion between the open ends 20a and 20b is poor.

Therefore, as shown in FIG. 7 and FIG.
22 is a separate part, and seats 25 and 26 are formed at both open ends 20a and 20b, and a fitting hole 28 is formed on both seats 25 and 26 while leaving a surface 27 for superimposition on the periphery. , This one open end
Forming protrusions 29 are formed at two predetermined positions on the overlapping surface 27 of the 20a, and the fitting protrusions 29 are formed on the overlapping surface 27 of the other open end 20b.
Is formed, and a screw rod 22 of another part is press-fitted into the fitting hole 28 of the one open end 20a, and the screw rod 22 is directed toward the outside of the frame rod 20. The projecting structure reduces the molding material at the open end 20a and improves the material efficiency. At the same time, the screw rod 22 of the one open end 20a is inserted into the fitting hole of the other open end 20b. 28, when the fitting projection 29 and the fitting recess 30 are aligned and the overlapping surfaces 27 abut and overlap with each other, one open end 20a from the inside of the frame rod 20.
There has also been proposed a configuration in which the seat 25 is hidden by the seat 25 of the other end so that the other open end 20b cannot be seen. Department
In the structure in which the fitting convex portion 29 and the fitting concave portion 30 are provided on the overlapping surfaces 27 of 25 and 26, the fitting concave portion 30 is formed deeply to secure the strength of the seat portion 26 forming the fitting concave portion 30. Can not do. Therefore, there is no engagement length of this fitting, and
When the screw on the screw rod 22 is loosened, the fitting projection 29 and the fitting recess
There was a disadvantage that the engagement with 30 was easily released.

In addition to forming the seat portions 25 and 26 thickly to secure the strength and increasing the engagement length between the fitting convex portion 29 and the fitting concave portion 30, the frame rod 20 The weight of the open ends increases the ease of use.
This is not possible because it is difficult to attach the net from 20a and 20b.

Also in this connection structure, since the open ends 20a and 20b have different male and female shapes, separate molding dies are required for each of them, resulting in high mold manufacturing costs.

The present invention finds a drawback of such a conventional structure for connecting the open ends of a frame rod for a scooping net, and the connecting portion of the open ends of the frame rods is integrally formed so as to be strong from the inside of the frame rod. In this configuration, the locking length of the detent fitting is sufficiently ensured, and even if the screw connection between the handle and the screw rod is loosened, the detent is not easily disengaged and the manufacturing cost is reduced. An object of the present invention is to propose an innovative connection structure of open ends of a frame rod for a scooping net.

[0011]

The gist of the present invention will be described with reference to the accompanying drawings.

The open ends 1a and 1b of the C-shaped frame rod 1 are connected to each other to form a closed ring, and a net 2 is attached to the frame rod 1 and a screw handle 3 or a handle is provided on the screw rod 3 provided at the connection portion. Mounting part 4
a, which is an open end connecting structure of a frame rod for a scooping net onto which a is screwed, and a superimposing surface 5a is left around a seat portion 5 formed on both open ends 1a and 1b of the frame rod 1. Each of the square fitting holes 6 is formed at the base of the screw rod 3, and a fitting square rod portion 7 that fits and locks into the square fitting hole 6 having a predetermined thickness in the length direction of the screw rod 3. The proximal end of the screw rod 3 is press-fitted into the square fitting hole 6 of the one open end 1a to press-fit the screw rod 3 toward the outside of the frame rod 1, and the protrusion is formed. The fitting square rod portion 7 is formed so as to bulge at the installation base portion, and the square fitting hole 6 of the other open end portion 1b is inserted into the screw rod 3 so as to be fitted therethrough. 7, when the overlapping surfaces 5a of the two open ends 1a and 1b are brought into contact with each other and overlapped, the seat 5 of one open end 1a is hidden from the inside of the frame rod 1 and the other open. End 1 Seat 5 of is related to the open end connection structure of the frame rod for scooping network, characterized in that to constitute a seat 5 in a shape that becomes invisible.

[0013]

A mesh 2 is mounted on a frame rod 1, and a square fitting hole 6 of the other open end 1b is inserted into the screw rod 3 of one open end 1a so that the square fitting hole 6 is inserted into one end. Is fitted to and engaged with the fitting square rod portion 7 of the open end portion 1a, and the overlapping surfaces 5a of both seat portions 5 abut and overlap with each other.

A screw handle 3 protrudes outward from the square fitting hole 6 of the other open end 1b toward the outside of the frame rod 1.
Alternatively, when the handle handle attaching portion 4a is screwed and connected, the open ends 1a and 1b of the frame rod 1 are connected and fixed in a detented state.

At this time, since the fitting square rod portion 7 fitted and locked in the square fitting hole 6 is configured to have a predetermined thickness in the length direction of the screw rod 3, Even if the handle 4 or the handle attaching portion 4a is loosely screwed and the connecting portions of the open ends 1a and 1b loosen, the square fitting hole 6 easily comes off from the thick fitting square rod portion 7. As a result, the detent connection between the open ends 1a and 1b can be maintained well.

Also, the square fitting hole 6 of the other open end 1b is formed.
When the overlapping ends 5a of the two open ends 1a and 1b are brought into contact with each other by being fitted and locked to the fitting square rod portion 7 of the one open end 1a, The open end 1a is hidden by the seat 5 of the open end 1a so that the seat 5 of the other open end 1b is not visible. It looks very solid and looks very solid and will be favored by consumers.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, an open end 1a of a C-shaped frame rod 1 is provided.
1b are connected to each other to form a closed ring, and a net 2 is mounted on the frame rod 1, and a grip 4 or a grip mounting portion 4a is screwed to a screw rod 3 provided at the connection portion. End connecting structure, wherein both open ends 1a and 1b of the frame rod 1 are provided.
A square fitting hole 6 is formed in each of the seat portions 5 leaving the overlapping surface 5a in the periphery, and the square covering member having a predetermined thickness in the longitudinal direction of the screw rod 3 is formed at the base of the screw rod 3. A fitting square rod portion 7 that fits and locks into the fitting hole 6 is bulged, and the base end of the screw rod 3 is press-fitted into the square fitting hole 6 of one of the open ends 1a. The rod 3 is formed so as to protrude toward the outside of the frame rod 1, and the fitting angle rod portion 7 is formed so as to protrude from the protruding base thereof, and the square fitting hole 6 of the other open end 1 b is formed. Is inserted into the threaded rod 3 to be engaged with the fitting square rod portion 7 and the overlapping surfaces 5a of the open ends 1a and 1b are brought into contact with each other. The seat 5 is configured to be hidden by the seat 5 of the one open end 1a so that the seat 5 of the other open end 1b cannot be seen.

The two open ends 1a and 1b are integrally formed into the same shape by forging using a single mold, and the overlapping surfaces 5a of the open ends 1a and 1b having the same shape are brought into contact with each other by polymerization. The seat 5 of the other open end 1b having the same shape is hidden by the seat 5 of the one open end 1a so as to be invisible.

The open ends 1a and 1b will be described in detail. The seat 5 is formed in a disk shape, and a square-shaped square hole 6 is formed in the center of the seat 5. The open end 1a has the periphery of the square fitting hole 6 outside the frame rod 1 as the overlapping surface 5a, and the other open end 1b defines the periphery of the square fitting hole 6 inside the frame rod 1 as the overlap. The surface 5a is used. Also, the respective overlapping surfaces 5 of the two open ends 1a and 1b are provided.
The hole edge of the square fitting hole 6 on the opposite side of FIG.

The screw rod 3 is separately cut from the open ends 1a and 1b. The threaded rod 3 has a tapered surface 9 that abuts on the base corresponding to the tapered surface 8 of the seat 5.
is formed, and a tapered surface 9 of the plate 9 is formed.
A square rod-shaped fitting rod portion 7 is formed so as to be fitted in the square fitting hole 6 in a state of being continuously connected to a.

The screw rod 3 is inserted into the square fitting hole 6 of the one open end 1a from the inside of the frame rod 1, and the square fitting hole 6 of the one open end 1a is inserted into the base of the screw rod 3. The tapered surface 8 of the open end portion 1a and the tapered surface 9a of the plate portion 9 of the screw rod 3 are abutted and fixed by pressure.

Accordingly, the square fitting hole 6 of the other open end 1b is fitted and inserted into the screw rod 3 projecting toward the outside of the frame rod 1 of the one open end 1a. When it is fitted and locked to the fitting square rod portion 7 bulging out from the protruding base portion, the other open end 1b and one open end 1a are stopped and locked, and the other open end is locked. When the handlebar mounting portion 4a connected to the end of the handlebar 4 is screwed and connected to the screw rod 3 projecting outward from the square fitting hole 6 of the portion 1b toward the outside of the frame rod 1, this detent state is fixed. Will be retained.

[0023]

Since the present invention is constructed as described above, the entire fitting square rod having a predetermined thickness at one open end is fitted and locked in the square fitting hole at the other open end. Has a strong detent effect, and because of the thickness of this fitting square rod,
When the overlapping surfaces of both open ends abut and overlap, and a handle or a handle attaching portion is screwed onto a screw rod of one open end protruding from a fitting hole of the other open end, Even if the screw rod is loosely screwed to the handle or the handle mounting part and the overlapped connecting part of the open ends is loose, the square fitting hole is easily disengaged from the fitting square rod part to prevent rotation. The open end connecting structure for the scooping net, which has an excellent practical effect such as the fact that there is no possibility of the release, is achieved.

Further, when the overlapping surfaces of both open ends are abutted and overlapped, the shape is hidden from the inside of the frame rod by the seat of one open end so that the seat of the other open end is not visible. The opening of the frame rod for the scooping net is excellent because the connecting part of the open ends looks like a solid integral shape from the inside of the frame rod and is favored by consumers. It becomes an end connection structure.

Also, since both open ends have the same shape, it is possible to forge with one mold without forming both open ends with separate molds as in a conventional product. The scooping net has an excellent structure, such as reducing the manufacturing cost and producing a lot of useless material when formed by forging. The screw rod is manufactured separately as a separate part, so the material efficiency is high and the material cost is reduced. Open end connecting structure of the frame rod.

[Brief description of the drawings]

FIG. 1 is an external perspective view of this embodiment.

FIG. 2 is an exploded perspective view of a main part of the embodiment.

FIG. 3 is a perspective view showing a connection state of main parts of the embodiment.

FIG. 4 is a side sectional view of FIG. 3;

FIG. 5 is an exploded perspective view of a main part of Conventional Example 1.

FIG. 6 is a perspective view showing a connection state of main parts of Conventional Example 1.

FIG. 7 is an exploded perspective view of a main part of Conventional Example 2.

FIG. 8 is a perspective view showing a connection state of main parts of Conventional Example 2.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame rod 1a Open end 1b Open end 2 Net 3 Screw rod 4 Handle 4a Handle attachment 5 Seat 5a Stacking surface 6 Square fitting hole 7 Fitting square rod

Claims (1)

(57) [Claims] An open end of a C-shaped frame rod is connected to form a closed ring, a net is attached to the frame rod, and a handle or a handle attachment is screwed to a screw rod provided at the connection portion. An open end connecting structure of a frame rod for a scooping net, and a square fitting hole is formed on a seat formed at both open ends of the frame rod, leaving a superimposing surface on the periphery, At the base of the screw rod, a fitting square rod portion that fits and locks into the square fitting hole having a predetermined thickness in the length direction of the screw rod is bulged, and a square fitting hole at one open end thereof is formed. The screw rod is press-fitted and fixed to the proximal end thereof to project the screw rod toward the outside of the frame rod, and the fitting square rod portion is formed so as to bulge at the projecting base. When the square fitting hole at the other open end is inserted into this screw rod, the fitting square rod is fitted and locked, and when the overlapping surfaces of both open ends abut and overlap, the frame rod Inside An open end connecting structure for a frame rod for a scooping net, wherein the seat is formed so as to be hidden from one side by a seat at one open end and to make the seat at the other open end invisible.