JPS5910803Y2 - Synthetic resin boom cap - Google Patents

Description

[Detailed description of the invention] The present invention relates to a boom cap for an antenna, and its purpose is to provide a boom cap with a simple and rational structure.
By providing a plastic boom cap that can be fitted tightly to the end of the boom without the risk of it falling off, it prevents rainwater from entering the boom and noise caused by wind. In addition, it is an object of the present invention to effectively and appropriately prevent deformation of the boom due to attachment of the attachment member to the end of the boom.

For booms made of tubular materials such as aluminum for paddy and antennas, attaching mounting members such as reflective elements (e.g. mounting brackets) to the ends may cause deformation of the ends or prevent rainwater from flowing inside from the ends. There is a risk of water intrusion or noise caused by the wind, so if you attach a cap to the end of the boom, you can prevent the above problems.
With conventional caps, the above-mentioned preventive effect could not be obtained at all due to the material and other factors.

That is, conventional caps have been made of plastic, but hard plastic caps can temporarily prevent deformation, but they tend to fall off, and soft plastic caps are completely useless in preventing deformation. be.

Therefore, in the conventional boom, it is necessary to shift the mounting position of the mounting member to a point where the boom will not be deformed even if the mounting member is mounted, which is uneconomical due to the unnecessary cost of materials. .

The present invention solves the above-mentioned conventional problems simply and effectively, and an example of its implementation will be described as follows based on the illustrated embodiment.

The headed cap body A, which is attached to the end of the boom C by removably tightly fitting the end of the boom C, has a plug shaped to have a smaller diameter than the head 1, as illustrated in FIGS. 1 to 4. A portion 2 is provided protrudingly provided on the mounting side of the head 1 to the boom C, and opposing locking pieces 3 are provided protrudingly provided toward the mounting side.

A gap 4 corresponding to the diameter of the threaded rod B installed across the boom C is formed between the two locking pieces 3, 3.

Both of the locking pieces 3, 3 have locking portions (for example, 5, 5, or 5a, 5a) to be engaged with the threaded rod B, as illustrated in FIGS. 1 and 3, for example. The tips of the locking pieces 3, 3 may be bent to form locking portions 5, 5 that protrude to face each other, or as illustrated in FIG.
, 3 (the position where the threaded rod B should be fitted) are appropriately provided with locking portions 5a, 5a formed by recesses.

Of course, in the case of FIG. 4, the position of the threaded rod B changes toward the distal end from, for example, the position of FIG. 5, corresponding to the position of the locking portions 5a, 5a.

Regarding the plug part 2, for example, as illustrated in FIGS. 2 and 3, the shape may be formed only by the circumference of the plug part 2, or as illustrated in FIG. There is no problem in doing so as long as it can be tightly fitted inside the boom.

In addition, the boom cap of the present invention is made entirely of plastic or molded with a resin material, so that the cap is tightly fitted to the boom and does not fall off, and the screws of the mounting member 7 (for example, a mounting bracket for a reflective element, etc.) Use a rod B that does not deform even when tightened to the boom.

In the figure, 6 indicates a wing nut.

The present invention is constructed as described above, and in order to attach the boom cap of the present invention, as illustrated in FIGS. The locking parts 5, 5 or 5a, 5a are fitted and locked, the plug part 2 is tightly fitted to the boom, and the head 1 is in contact with the end surface of the boom. .

Since they are fitted and installed in this way, there is no risk of the cap falling off, and since the cap has an appropriate hardness, the end of the boom will not be deformed at all even when tightened with the tightening rod B. It is.

Therefore, by using the present invention, problems such as deformation of the boom end due to the installation of the conventional mounting member, rainwater intrusion due to the cap falling off, and sound production can be solved very easily and rationally. The mounting position of the mounting member can be set at the tip of the boom without any hindrance, making it possible to use boom materials such as aluminum pipe material economically, which also helps to save resources.

Therefore, it can be said that the practical value of the present invention is extremely significant.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention, and FIG. 1 is an explanatory diagram of the boom cap of the present invention, FIG. 2 is a side view of FIG. 1, FIG.
FIG. 4 is a front view of another embodiment, FIG. 5 is a sectional view illustrating the present invention mounted on a boom, and FIG. 6 is a perspective view thereof. A... Headed cap body, B... Threaded rod, C... Boom, 1... Head, 2... Plug portion, 3... Locking piece,
4... Gap °, 5, 5a... Locking part, 7... Mounting member.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A plug part with a smaller diameter than the head part is provided protruding from the head part, and a headed cap body that is to be detachably and closely fitted to the end of the boom is attached to the side where the head is attached to the boom. , opposing locking pieces are provided protrudingly so as to form a gap between the two locking pieces corresponding to the diameter of the draw rod attached to the boom; A boom cap made of resin and provided with a locking part to be engaged with a rod. 2. A boom cap made of synthetic resin as set forth in claim 1 of the utility model registration claim, in which a locking portion is formed by mutually protruding the ends of both locking pieces. 3. A boom cap made of composite resin according to claim 1, wherein the locking portion is formed by providing a recess at a required position where both of the locking pieces face each other.