JPS646573Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a roof horse that supports an antenna mast.

As shown in FIG. 1, a conventional roof horse (antenna mast stand) has a cylindrical part 3 at the top of a support leg holder 2 formed in a skirt shape fitted into the lower end of a mast support cylinder 1. The lower end surfaces of the two were welded all around to connect and connect them. When the mast support tube 1 and the support leg holder 2 are connected by welding, the corrosion-resistant surface treatment part of the welded part 4 is destroyed by the high temperature during welding, and rust occurs and corrosion occurs during use. was. In addition, the mast support tube 1 and the supporting leg holder 2
It took a long time to weld the entire circumference, and the productivity of the roof horse was poor. Furthermore, since rainwater accumulates inside the mast support tube 1, it is necessary to provide a drain hole 5 in the side wall thereof. Therefore, the present invention aims to eliminate the above-mentioned drawbacks by abolishing welding for connecting the mast support tube and the supporting leg holder.The present invention attempts to eliminate the above-mentioned drawbacks by eliminating welding for connecting the mast support tube and the supporting leg holder. The support leg holder is formed into a skirt shape having an upper wall with a diameter that increases as it goes downward, and the lower end of the mast support cylinder is inserted into the insertion hole drilled in the upper wall of the support leg holder. The outer flange is placed on the upper wall by fitting inside, and the lower end of the mast support cylinder is curled to expand outward, and the upper wall is sandwiched between the outer flange and the outer flange.

Hereinafter, the present invention will be explained in detail based on a specific embodiment shown in FIGS. 2 and 3.

An outward flange 7 is integrally formed by protruding a side wall on the outer peripheral surface near the lower end surface of the mast support cylinder 6, and a mounting bolt 9 for fixing the inserted antenna mast 8 is screwed into the middle part of the side wall.

The supporting leg holder 10 has a flat upper wall 11 and is shaped like a skirt whose diameter increases as it goes downward, and is formed into a cross shape in plan view so that the four supporting legs 12 can be opened and closed. The upper end of the supporting leg 12 is housed in the supporting leg holder 10, and the upper end is pivotally connected to the supporting leg holder 10 so that it can be opened and closed freely. It engages with the stop bulging surface 14 that bulges toward the side, thereby maintaining the open leg state. Further, in order to maintain the shape of the supporting leg holder 10, a reinforcing pin 15 is installed between the side walls at the center.

An insertion hole 17 is provided in the center of the upper wall 11 of the support leg holder 10, into which the lower end cylindrical portion 16 of the mast support tube 6 is inserted.

The connection between the support leg holder 10 and the mast support tube 6 is as follows:
The lower end cylindrical part 16 of the mast support cylinder 6 is fitted into the insertion hole 17 of the support leg holder 10, the outward flange 7 is placed on the upper wall 11, and the lower end cylindrical part 16 is expanded outward and curled. A wall 11 is sandwiched between an outward flange 7. Curling here refers to expanding the lower end cylindrical portion 16 outward over its entire circumference and forming it into an arcuate shape in cross section. When the outward flange 7 of the mast support cylinder 6 and the lower end cylinder part 16 are expanded and curled to sandwich the upper wall 11 of the supporting leg holder 10, they are firmly connected. Further, when connecting the supporting leg holder 10 and the mast support tube 6, a concave notch 18 is provided in the lower end cylinder portion 16 of the mast supporting tube 6, and the insertion hole 1 of the supporting leg holder 10 is inserted into the concave notch 18.
7 is fitted with a convex locking piece 19 to prevent rotation. Since the locking piece 19 of the supporting leg holder 10 is firmly fitted into the concave notch 18 of the mast support tube 6,
The support leg holder 10 and the mast support cylinder 6 are integrated and there is no possibility of rotation between them. This locking piece 18 is bent along the inner wall of the mast support tube 6 so as not to interfere with insertion when the antenna mast 8 is inserted into the mast support tube 6. Note that the concave notch 18 and the locking piece 19 are not limited to one location, but may be provided at two or more locations as necessary.

To attach the antenna mast 8 to the roof horse, insert the antenna mast 8 into the mast support tube 6, bring its lower end into contact with the reinforcing pin 15, set the direction of the antenna, and then screw in the mounting bolt 9. Do it.
The vertical load on the antenna at this time is the outward flange 7,
It is sufficiently supported by the reinforcing pin 15, the supporting leg holder 10, and the supporting leg 12.

As described above, the present invention connects the mast support tube and the supporting leg holder using a curling piece formed in an arc shape by expanding the outward flange and the lower end tube portion of the mast support tube outward over the entire circumference. Since the upper wall of the support leg holder is sandwiched between the mast support cylinder and the support leg holder, the mast support cylinder and the support leg holder are tightly fitted together and have a strong structure. In the present invention, since welding is not performed, the corrosion-resistant surface treatment part is not destroyed, and the joint part does not rust or corrode, resulting in improved corrosion resistance. In addition, welding was no longer required for the connection between the mast support tube and the support leg holder, and a curling process was used instead, reducing processing time and improving the productivity of the roof horse. Furthermore, by eliminating welding, the exterior appearance has improved. Furthermore, since the bottom of the antenna mast is penetrating, there is no chance of rainwater collecting inside the mast support tube, and there is no need for drain holes drilled in the side wall of the mast support tube, making the antenna mast even cheaper. It became possible to provide a roof horse to support the

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of the main parts of a conventional roof horse;
The figure is a vertical cross-sectional view of the main parts of a roof horse according to a specific embodiment of the present invention, and FIG. 3 is a bottom view of FIG. 2. 6... Mast support tube, 7... Outward flange, 1
0... Support leg holder, 11... Upper wall, 17... Insertion hole, 16... Lower end cylinder portion.

Claims (1)

[Scope of utility model registration request] integrally forming an outward flange by protruding a side wall on the outer circumferential surface near the lower end surface of the mast support cylinder; forming the supporting leg holder in a skirt shape having an upper wall and increasing in diameter as it goes downward; Insert the lower end of the mast support tube into the insertion hole drilled in the upper wall of the support leg holder, place the outward flange on the upper wall, and expand the lower end of the mast support tube outward over the entire circumference. The roof horse is formed by forming an arc-shaped curling piece, and sandwiching the upper wall between an outward flange and the curling piece.