JPH099822A - Open end part-connecting structure of frame lever for scooping net - Google Patents

Abstract

PURPOSE: To provide an open end part-connecting structure of a frame lever for epoch-making scooping net which looks from the inside of frame lever so that connecting parts of open end parts of a frame lever are integrally formed, not simply removing fixing of engaging of open end parts even if spiral binding between a grip and a screw element lever is loosen and capable of producing at a low cost. CONSTITUTION: A square hole 6 to be engaged is formed in a seat part 5 formed in both open end parts 1a and 1b of a C-shaped frame lever 1 in a state in which a face 5a for overlap is left on the periphery and a screw lever 3 forming, in protruded form, a fitting square lever part 7 for fitting and fixing to the square hole 6 to be fitted having prescribed thickness in the length direction of the screw lever 3 is inserted into the square hole 6 to be fitted of either one open end part 1a and fixed and protrudingly installed toward the outside of the frame lever 1 and a square hole to be fitted of other open end part 1b is fitted and inserted into the screw lever 3 to fit and fix the hole into the fitting square lever part 7 and when faces 5a for overlapping both open end parts 1a and 1b are brought into contact and overlapped, a seat part 5 is constituted in such form that the seat part 5 of other open end part 1b is hidden from the seat part 5 of either one open end part at the view from inside of the frame lever 1.

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 As shown in FIGS. 5 and 6, a conventional open-end connecting structure of a frame rod for a scooping net has one open end portion of a C-shaped frame rod 20. 20a is formed on a square rod-shaped fitting square rod portion 21, and a screw rod 22 is projected on the fitting square rod portion 21 toward the outside of the frame rod 20 and the other open end portion is formed.
20b has a fitting hole into which the screw rod 22 is fitted and inserted, and the fitting angle rod portion 21 is provided with a square shaped fitting portion 23 to be fitted from the outside of the frame rod 20. The screw rod 22 of the open end portion 20a of the above is inserted into the fitted hole of the other open end portion 20b to fit the fitted portion 23 into the fitting angle rod portion 21, and the other open end portion 20b When the grip handle or grip handle mounting portion 24 is screwed onto the screw rod 22 protruding from the hole to be fitted, the open end 20a of the frame rod 20
20b were connected and fixed in a fixed rotation state.

On the other hand, the scooping net having such a connecting structure of the open ends of the frame rod for the scooping net seems to have insufficient strength when it is understood that the open ends of the frame rod are divided. Also, since the anti-rotation effect seems to be weak, it is generally preferable that the connecting part of the open ends does not seem to be divided from the inside of the frame rod, but it looks like a sturdy one-piece shape. .

Therefore, in the above-mentioned conventional connecting structure described above, as shown in FIG. 6, the fitted portion 23 fitted on the fitting square rod portion 21 is fitted.
Is visible from the inside of the frame rod 20, and it can be seen that the open end portions 20a and 20b are divided, which is not preferable.

Both of the open ends 20a and 20b are integrally formed by forging.
-Since 20b has different male / female shapes, separate molding dies for each are required, resulting in increased die manufacturing cost.

Further, particularly in the case of forging, a large amount of useless material is produced, but a large amount of molding material is required because the open end 20a of one side integrally molds the screw rod 22.
There are too many useless materials generated during this molding, resulting in poor material efficiency. Therefore, there is a problem that an expensive material cannot be used and the connection between the open ends 20a and 20b is not well formed.

Therefore, as shown in FIGS. 7 and 8, a screw rod is used.
22 is a separate part, seat portions 25 and 26 are formed on both open ends 20a and 20b, respectively, and a fitting hole 28 is formed on both seat portions 25 and 26 leaving a superimposing surface 27 on the periphery. , This one open end
Fitting protrusions 29 are formed at two predetermined positions on the superimposing surface 27 of 20a, and the fitting convex portions 29 are formed on the superimposing surface 27 of the other open end 20b.
A fitting recess 30 for fitting and locking is formed, and a screw rod 22 of another part is press-fitted and fixed in the fitted hole 28 of the one open end 20a so that the screw rod 22 faces the outside of the frame rod 20. With the projecting configuration, the molding material of the open end 20a is reduced to improve the material efficiency, and the screw rod 22 of the one open end 20a is fitted into the fitting hole of the other open end 20b. When the fitting convex portion 29 and the fitting concave portion 30 are fitted to each other and the overlapping surfaces 27 are brought into contact with each other and superposed, one open end 20a from the inside of the frame rod 20 is inserted.
Although the seat 25 has been proposed in such a shape that it is hidden by the seat 25 of the other end and the other open end 20b is invisible, such a connecting structure has a structure in which each seat of the open ends 20a and 20b to be connected is seated. Department
Due to the structure in which the fitting convex portion 29 and the fitting concave portion 30 are provided on the overlapping surface 27 of 25 and 26, the fitting concave portion 30 is formed deep in order to secure the strength of the seat portion 26 forming the fitting concave portion 30. I can't. Therefore, there is no mesh length for this fitting, and the handle handle attachment part 24
When the screw rod 22 is loosely attached to the screw rod 22, the fitting convex portion 29 and the fitting concave portion
There was a drawback that the fitting and locking with 30 was easy to come off.

Further, it is necessary to form the seat portions 25 and 26 thick to secure the strength and to make the engagement length of the fitting convex portion 29 and the fitting concave portion 30 long so that the frame rod 20 is correspondingly formed. Not only increases the weight of the machine but also reduces its usability,
This is not possible because it is difficult to attach the net from 20a / 20b.

Also in this connection structure, since the open end portions 20a and 20b have different male and female shapes, separate molding dies are required for the respective open ends 20a and 20b, resulting in high die manufacturing cost.

The present invention has found a drawback of such a conventional open-end connecting structure of a frame rod for a scooping net, and the connecting parts of the open ends of the frame rod are integrally formed so as to be sturdy from the inside of the frame rod. Even if the grip handle and the screw rod are loosely screwed, the detent lock will not come off easily and the cost will be reduced. This is a proposal for an epoch-making open-end connecting structure 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 shape, and a mesh 2 is attached to the frame rod 1 and a handle 4 or a handle is attached to a screw rod 3 provided at the connecting portion. Mounting part 4
The open end connection structure of a frame rod for a scooping net to which a is screwed, in which a superposing surface 5a is left around the seat 5 formed on both open ends 1a and 1b of the frame rod 1. Respectively, and each of the square fitting holes 6 is formed, and a fitting square rod portion 7 having a predetermined thickness in the length direction of the screw rod 3 is formed on the base portion of the screw rod 3 so as to be fitted and locked in the square fitting hole 6. The base end portion of the screw rod 3 is press-fitted and fixed to the square fitting hole 6 of the one open end portion 1a so as to project the screw rod 3 toward the outside of the frame rod 1 and to project it. The fitting square rod portion 7 is configured to be bulged and formed on the installation base, 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 is engaged and locked, and when the overlapping surfaces 5a of the open ends 1a and 1b are contacted and overlapped with each other, the inside of the frame rod 1 is hidden by the seat 5 of one open end 1a and the other is opened. 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]

The mesh 2 is mounted on the frame rod 1, the screw rod 3 of the one open end portion 1a is inserted into the square fitting hole 6 of the other open end portion 1b, and the square fitting hole 6 is inserted in one side. The fitting ends are locked to the fitting angle rods 7 of the open ends 1a, and the overlapping surfaces 5a of both seats 5 are brought into contact with each other and overlapped.

The handle 4 is attached to the screw rod 3 projecting toward the outside of the frame rod 1 from the square fitting hole 6 of the other open end 1b.
Alternatively, when the grip handle mounting portion 4a is screwed and coupled, the open ends 1a and 1b of the frame rod 1 are coupled and fixed in a non-rotating state.

At this time, since the fitting square rod portion 7 which is fitted and locked in the square fitting hole 6 is constructed to have a predetermined thickness in the length direction of the screw rod 3, Even if the grip handle 4 or the grip handle mounting portion 4a is loosely screwed and the connecting portion between the open ends 1a and 1b rattles, the square fitting hole 6 is easily removed from the thick fitting square rod portion 7. Without such a situation, the detent connection between the open ends 1a and 1b is favorably maintained.

Also, the rectangular fitting hole 6 at the other open end 1b
Is fitted and locked to the fitting angle rod portion 7 of the one open end portion 1a and the overlapping surfaces 5a of the both open end portions 1a and 1b are brought into contact with each other to be superposed. Since it is configured to be hidden by the seat portion 5 of the open end portion 1a and the seat portion 5 of the other open end portion 1b cannot be seen, the connecting portion between the open end portions 1a and 1b is from the inside of the frame rod 1. It looks like a very sturdy monolithic shape and will be preferred by consumers.

[0017]

EXAMPLE In this example, the open end 1a of the C-shaped frame rod 1
1b Connecting the two to form a closed ring, attaching the net 2 to the frame rod 1 and screwing the handle 4 or the handle attaching part 4a to the screw rod 3 provided at the connecting portion to open the frame rod for the scooping net. It is an end connection structure, and both open ends 1a and 1b of this frame rod 1
Square seating holes 5 are left in the periphery of the seat portion 5 formed in each of the seats 5, and the bases of the screw rods 3 have a predetermined thickness in the longitudinal direction of the screw rods 3. A fitting square rod portion 7 that fits and locks in the fitting hole 6 is formed to bulge, and the base end portion of the screw rod 3 is press-fitted and fixed to the square shaped fitting hole 6 of the one open end portion 1a to form a screw. The rod 3 is provided so as to project toward the outside of the frame rod 1, and the fitting corner rod portion 7 is formed so as to bulge on the projecting base portion thereof, and the square fitting hole 6 of the other open end portion 1b is formed. Is inserted into the screw rod 3 to be fitted and locked in the fitting angle rod portion 7 and the overlapping surfaces 5a of the open end portions 1a and 1b are abutted and overlapped with each other. The seat 5 is formed in such a shape that it is hidden by the seat 5 of the one open end 1a and the seat 5 of the other open end 1b cannot be seen.

Both of the open ends 1a and 1b are integrally formed into the same shape by forging with a single molding die, and when the overlapping surfaces 5a of the open ends 1a and 1b having the same shape are superposed and abutted, The seat 5 of the other open end 1b of the same shape is hidden by the seat 5 of the one open end 1a so as not to be seen.

The two open ends 1a and 1b will be described in detail. The seat 5 is formed in a disk shape, and a square-shaped square fitting hole 6 is formed in the center of the seat 5, and The open end portion 1a of the above is used as the overlapping surface 5a around the square fitting hole 6 on the outside of the frame rod 1, and the other open end portion 1b is formed around the periphery of the square fitting hole 6 inside the frame rod 1 by the overlapping. It is used as the working surface 5a. In addition, the overlapping surfaces 5 of the open ends 1a and 1b of the both sides are formed.
The edge of the square fitting hole 6 on the opposite side of a is formed as a tapered surface 8.

The screw rod 3 is separately machined separately from the open ends 1a and 1b. The screw rod 3 has a tapered surface 9 that abuts on the base portion in correspondence with the tapered surface 8 of the seat portion 5.
The dish portion 9 having a is formed, and the tapered surface 9 of the dish portion 9 is formed.
A square rod-shaped fitting square rod portion 7 which is fitted and locked in the square fitting hole 6 is formed in a continuous state with 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 fitting angle rod portion 7 is fitted and locked, and the taper surface 8 of the open end portion 1a and the taper surface 9a of the dish portion 9 of the screw rod 3 are abutted and fixed by pressure.

Therefore, the square fitting hole 6 of the other open end 1b is inserted into the screw rod 3 projecting toward the outside of the frame rod 1 of the one open end 1a, and the screw rod 3 of this screw rod 3 is inserted. When the fitting square rod portion 7 that is bulged on the projecting base is fitted and locked, the other open end portion 1b and one open end portion 1a are locked to prevent rotation, and the other open end portion is locked. When the handle handle mounting portion 4a continuously provided at the end of the handle handle 4 is screwed and connected to the screw rod 3 projecting outward from the rectangular fitting hole 6 of the portion 1b, the rotation stop state is fixed. Will be retained.

[0023]

Since the present invention is constructed as described above, the whole fitting square rod portion 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 anti-rotation effect, and due to the thickness of this fitting angle rod,
When the grip handle or grip handle mounting portion is screwed onto the screw rod of one open end protruding from the fitting hole of the other open end by contact-polymerizing the overlapping surfaces of both open ends, Even if this screw rod is loosely screwed to the handle or handle attachment part and the overlapping connecting part of the open ends rattles, the square fitting hole is easily disengaged from the fitting angle rod part and locking is stopped. It is an open end connection structure for scooping nets that has excellent practical effects such as not releasing.

Further, when the overlapping surfaces of the two open ends are contact-polymerized with each other, the shape is hidden from the inside of the frame rod by the seat of the one open end and the seat of the other open end cannot be seen. Since the seat part is configured on the inside, the open end of the frame rod for scooping is excellent from the inside of the frame rod because the connecting part of the open ends looks like a sturdy one-piece shape and is preferred by consumers. It has an end connection structure.

Further, since both open ends have the same shape, it is possible to forge-mold with one molding die without molding both open ends with separate molding dies as in the conventional product. Manufacturing cost is reduced, and the screw rod that produces a lot of useless material when formed by forging is manufactured separately as a separate part, so material efficiency is good and the scooping net with an excellent structure such as material cost reduction It becomes the open end connection structure of the frame rod for use.

[Brief description of drawings]

FIG. 1 is an external perspective view of the present embodiment.

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

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

FIG. 4 is a side sectional view of FIG.

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

FIG. 6 is a perspective view showing a connected 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 connected state of main parts of Conventional Example 2.

[Explanation of symbols]

 1 frame rod 1a open end 1b open end 2 mesh 3 screw rod 4 grip handle 4a grip handle attachment part 5 seat part 5a polymerization surface 6 square fitting hole 7 fitting angle rod part

Claims (1)

[Claims] 1. A C-shaped frame rod is connected to the open ends thereof to form a closed ring, a net is attached to the frame rod, and a handle or a handle attachment part is screwed to a screw rod provided in the connecting part. A structure for connecting open ends of a frame rod for a scooping net, wherein seating portions formed at both open ends of the frame rod are respectively formed with square fitting holes leaving a stacking surface in the periphery. On the base of the screw rod is formed a bulging fitting square rod part which is fitted and locked in the square fitting hole having a predetermined thickness in the length direction of the screw rod, and the square fitting hole at one of the open ends is formed. A base end portion of the screw rod is press-fitted and fixed to the screw rod so as to project toward the outer side of the frame rod, and the fitting base rod portion is formed to bulge on the protruding base portion; When the square fitting hole at the other open end is inserted into this screw rod and is fitted and locked to the fitting square rod part, when the overlapping surfaces of both open ends contact and overlap, the frame rod Within An open-end connecting structure for a frame rod for a scooping net, characterized in that the seat is formed in such a shape that the seat is hidden from the seat at one open end from the side and the seat at the other open end cannot be seen.