JPH079976Y2 - Street light pole - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a pole for a street light.

[0002]

2. Description of the Related Art A pole for a street light is a long pipe structure. However, if it is constructed by using one pipe, the upper part which does not require strength becomes large in diameter and waste of material occurs. The structure is such that the lower pole that requires strength has a large diameter, and a small diameter upper pole is connected to the upper end of this lower pole. Therefore, a connection structure that connects the lower pole and the upper pole is required. .

FIG. 4 shows a conventional connecting structure, in which an upper end of a lower pole 1 is drawn to form an opening 2 having a small diameter, and a lower end of a joint pipe 3 into which the lower part is inserted is placed at the lower end. The pole 1 is welded and fixed to the inside of the pole 1, and the ring-shaped joint cover 5 is fitted and inserted into the root portion of the joint pipe 3 projecting from the upper end of the lower pole 1, and the inner diameter of the joint pipe 3 is adapted to the pipe 3. Upper pole 6 is inserted, and the lower end of this upper pole 6 is supported by the joint cover 5, and the joint pipe 3
And a plurality of upper poles 6 are connected with a set bolt 7.

[0004]

By the way, in the conventional connection structure as described above, since the set bolt 7 and the joint cover 5 are exposed on the outer peripheral surface of the upper pole 6, the appearance of the finished appearance is unclear. There is a problem that becomes.

Further, a joint pipe 3, a joint cover 5 and a set bolt 7 are required for connection,
The number of parts increases accordingly.

Therefore, an object of the present invention is to provide a streetlight pole in which the appearance of the connecting portion between the lower pole and the upper pole is finished neatly and the number of parts can be reduced.

[0007]

In order to solve the above-mentioned problems, the present invention has a lower pole whose upper end is narrowed to an opening having a small diameter, and an upper pole which is inserted into and connected to the upper end opening of the lower pole. The lower pole has an inner diameter that fits the lower end of the upper pole at a position near the upper end of the lower pole. The peripheral wall is provided with a step portion that abuts around the upper end opening of the lower pole, and the lower wall portion of the upper pole has a notch that engages with a claw of the flange so that the lower edge opens. .

[0008]

[Operation] The lower part of the upper pole is inserted into the upper end opening of the lower pole, and the lower end of the upper pole is inserted into the flange while the lower end notch of the upper pole is aligned with the claw of the flange in the lower pole. When the step portion of the pole is brought into contact with the peripheral edge of the opening of the lower pole, the lower pole and the upper pole are connected in a detent shape by the engagement of the claw and the notch.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

As shown, the lower pole 11 made of pipe
Has a small-diameter opening 12 formed at the upper end by drawing the upper end, and an inwardly inclined return piece 13 is provided at the peripheral edge of the opening 12.

The upper pole 14 is formed by using a pipe having a diameter smaller than that of the lower pole 11, and a small diameter portion 15 having an outer diameter which fits into the opening 12 is provided at a lower end portion with a predetermined length. Has a tapered step portion 16 that abuts the folded piece 13 of the opening 12.

An anti-rotation flange 17 having an inner diameter to which the lower end of the small-diameter portion 15 of the upper pole 14 fits is fixed by welding to a position near the upper end of the lower pole 11 by welding. The claw 18 is provided so as to project. Small diameter part 15 inserted in the opening 12 of the upper pole 14
Is set to have a length such that the lower end of the step 16 fits into the flange 17 while the step 16 is in contact with the folded piece 13.

A notch 19 is provided on the lower end peripheral wall of the small-diameter portion 15 of the upper pole 14 so as to be externally engaged with the pawl 18. As shown in FIG. 1, the notch 19 has a small diameter portion 15
The opening is formed at the lower end edge, goes upward along the axial direction, bends at a right angle in the radial direction on the way, and then goes upward again.

To engage the notch 19 with the pawl 18, the small diameter portion 15 is inserted into the opening 12 and the lower half of the notch 19 is fitted into the pawl 18 and the upper pole 14 is slightly rotated. When moved, the inner end of the notch 19 fits into the claw 18, and the upper pole 14 is connected to the lower pole 11 in a non-rotating manner.

The outer surface of the upper end of the lower pole 11 has a claw 1 so that the claw 18 and the notch 19 can be engaged smoothly.
A position indication 20 of the claw 18 is provided directly above the reference numeral 8, and an indication 21 showing the position and shape of the notch 19 is provided directly above the notch 19 on the outer surface of the small diameter portion 15.

The pole of the present invention is constructed as described above, and in order to connect the upper pole 14 to the lower pole 11,
As shown in FIG. 1, when the small-diameter portion 15 is inserted into the opening 12 with the displays 20 and 21 aligned vertically, and the lower end of the small-diameter portion 15 is fitted into the flange 17, the lower half portion of the cutout 19 is removed. When the upper pole 14 is externally fitted to the claw 18 and is rotated during the insertion, the inner end side of the notch 19 fits into the notch 19 and the upper pole 14 is completely inserted, and the tapered step portion 16 is opened. Abutting on the folding piece 13, as shown in FIG. 2 and FIG.
The upper pole 14 is connected to the upper end of the lower pole 11 in a non-rotating manner.

In order to improve the waterproof property of the connecting portion between the lower pole 11 and the upper pole 14, as shown in FIG. 3, a waterproof packing foam 22 is attached to the surface of the folded piece 13 in advance, and the step 16 and the folded piece 13 are joined together. Waterproof the overlapping surface.

[0018]

[Effect] As described above, according to the present invention, the outer pole of the upper pole inserted into the upper end opening of the lower pole is provided with a step portion that abuts on the opening, and the lower end portion of the upper pole fits inside the lower pole. Since the flange is fixed and the claw provided on this flange is engaged with the notch provided on the lower periphery of the upper pole, the lower pole and the upper pole have a non-rotating shape without a member exposed to the outside. You can connect, and you can make a finished connection with a neat appearance.

Further, since the connecting parts for the lower pole and the upper pole are only the flanges, the cost can be reduced by reducing the number of parts.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a pole according to the present invention.

FIG. 2 is a cutaway perspective view of an essential part showing the same connection state as above.

[Fig. 3] Similarly, a front view of a notched part

FIG. 4 is a partially cutaway front view showing a conventional pole.

[Explanation of symbols]

 11 Lower Pole 12 Opening 13 Folding Piece 14 Upper Pole 15 Small Diameter Part 16 Step 17 Flange 18 Claw 19 Notch 20, 21 Display 22 Waterproof Packing Foam

Claims (1)

[Scope of utility model registration request] 1. A lower pole whose upper end is narrowed to an opening having a small diameter, and an upper pole which is inserted into and connected to an upper end opening of the lower pole. The upper pole is located near the upper end in the lower pole.
A step portion that has an inner diameter to which the lower end of the upper pole fits, fixes a detent flange that has a claw protruding from the inner circumference, and abuts on the peripheral wall in the lower middle of the upper pole around the upper end opening of the lower pole. And a notch that engages with a claw of the flange is formed on the peripheral wall of the lower end portion of the upper pole so as to open at the lower end edge.