JPH0213659Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a cap for the opening end of a pipe constituting a fence, gate, support, etc.

(Prior art) Conventionally, as a cap of this kind, for example,
-9810, in which a cap is fitted to the upper end of a square metal pipe, the cap body is bent on each four sides of a rectangular top plate to form a flange edge, and four elastic A metal fence cap with integrally molded leg pieces has been proposed.

(Problem to be Solved by the Invention) However, in such a conventional cap, the four elastic leg pieces are pressed against the inner surface of the square pipe due to their expansion elasticity. When attaching the cap to the cap, all four elastic leg pieces must be squeezed together and inserted into the square pipe to prevent them from expanding, which has the disadvantage that the cap installation process is time-consuming. Moreover, if the expansion elasticity of each elastic leg piece decreases due to the influence of heat or changes over time, there is a drawback that the cap tends to come off from the square pipe.

(Means for Solving the Problems) In view of the drawbacks of the conventional art, the present inventor has made extensive efforts to provide a cap for the opening end of a pipe that eliminates the above-mentioned drawbacks.

The present invention will be described below with reference to the drawings.

In the drawing, A is the cap of the present invention,
A metal plate of an appropriate thickness is formed by press working. The cap A is fitted into the open end of a square pipe 5 constituting a fence, gate, support, etc., and includes a rectangular top plate 1, flanges 2, 2... and elastic leg pieces 3, 3. Tension leg pieces 4, 4
is formed from.

The top plate 1 is sized to close the open end of the square pipe 5, and has a rectangular shape similar to the open end of the square pipe 5.

The flange edges 2, 2, . . . are formed by bending each of the four sides of the top plate 1 downward.

The elastic leg pieces 3, 3 have a pair of opposing flanges 2, 2.
They each extend downward in an integrated manner. The elastic leg pieces 3, 3 have a width approximately equal to or slightly smaller than the inner diameter of the square pipe 5, and have expansion elasticity.
It is adapted to be pressed against the inner surface of the square pipe 5. Further, the elastic leg pieces 3, 3 have protrusions 31, 3 on their outer surfaces.
1 is formed, and the protrusions 31, 31 are pressed against the inner surface of the square pipe 5 to prevent the cap A from coming off from the square pipe 5. The protrusions 31, 31 are the first
In the case of the figure, a portion of the elastic leg pieces 3, 3 are cut upward and formed into a tongue shape, but they do not necessarily have to be shaped like a tongue, and may be formed into a protrusion or the like.
Further, it is preferable that the protrusions 31, 31 are formed upward, since this will increase the effect of preventing the protrusions from coming off.

The strut leg pieces 4, 4 are integrally extended downwardly and inwardly from the other pair of opposing flanges 2, 2, respectively. The tension legs 4, 4 are sandwiched between the elastic legs 3, 3, and are directed inward so as not to contact the inner surface of the square pipe 3.

(Function) Next, in order to fit the cap A of the present invention into the open end of the square pipe 5, the tips of the opposing elastic leg pieces 3, 3 are squeezed, and the elastic leg pieces 3, 3 and the tension leg pieces are closed. 4, 4 are forcibly press-fitted into the square pipe 5, and the flanges 2, 2, . . . are brought into contact with the opening edges of the square pipe 5. At this time, as shown in FIGS. 3 and 4, the elastic leg pieces 3, 3
are pressed against the inner surface of the square pipe 5 by the expansion elasticity, and the elastic legs 3, 3 are pressed against the inner surface of the square pipe 5 by the tension legs 4, 4. At the same time, the protrusions 31, 31 of the elastic legs 3, 3 are also pressed against the inner surface of the square pipe 5 by the tension legs 4, 4, so that the protrusions 31, 31 exhibit the effect of preventing the cap A from coming off. There is.

(Effects of the Invention) As detailed above, in the cap of the present invention, only the elastic leg pieces extending downward from a pair of opposing flange edges are pressed against the inner surface of the square pipe. When attaching the cap to a square pipe, the cap can be attached by simply squeezing the two elastic legs so that they do not spread out, and the cap installation process does not take much time.

Furthermore, the tension legs are integrally extended downwardly and inwardly from the other pair of opposing flange edges, and the tension legs are sandwiched between the elastic legs. The elastic leg piece is pressed against the inner surface of the square pipe by its expansion elasticity, and the elastic leg piece is further pressed against the inner surface of the square pipe by the tension leg piece, so that the cap is securely fixed to the square pipe without wobbling. Therefore, even if the expansion elasticity of the elastic leg pieces decreases due to the influence of heat or changes over time, the cap will not come off as in the conventional case.

Furthermore, since a protrusion is formed on the outer surface of the elastic leg piece, the elastic leg piece is pressed against the inner surface of the square pipe by the tension leg piece, and at the same time the protrusion is also pressed against the inner surface of the square pipe. The stopping effect can be further enhanced.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the cap of the present invention, FIG. 2 is a perspective view of the cap of the present invention in use, and FIG. 3 is a sectional view taken along the line of FIG.
FIG. 4 is a sectional view taken along the line shown in FIG. 2. A...Cap, 1...Top plate, 2...Brim, 3
...Elastic leg piece, 31... Protrusion, 4... Protrusion leg piece, 6... Square pipe.

Claims (1)

[Scope of utility model registration request] In the cap that is fitted onto the open end of the square pipe 5, each of the four sides of the rectangular top plate 1 that closes the open end of the square pipe 5 is bent to form flanges 2, 2, etc., which face each other. Elastic leg pieces 3, 3 are integrally extended downward from a pair of flanges 2, 2, respectively,
Projections 31, 31 are formed on the outer surfaces of the elastic leg pieces 3, 3, and tension leg pieces 4, 4 are integrally extended downwardly and inwardly from the other pair of opposing collar edges 2, 2, respectively. A pipe opening in which the tension leg pieces 4, 4 are sandwiched between the elastic leg pieces 3, 3, and only the elastic leg pieces 3, 3 are pressed against the inner surface of the square pipe 5. End cap.