JPH068635U - Street light pole - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the external shape of the connection between the lower pole and the upper pole, and to reduce the number of parts for connection. [Structure] An upper end of a lower pole 11 is drawn to form an opening 12 having a small diameter, and a step portion 16 abutting the upper end of the opening 12 is provided on a peripheral wall of an upper pole 14 inserted into the opening 12. An anti-rotation flange 17 into which the lower end of the upper pole 14 is fitted is fixed to the upper part of the inside, and a claw 18 projecting on the inner circumference of the flange 17 and a notch 19 provided in the lower part of the upper pole 14 are engaged. By the lower pole 11
Then, the upper pole 14 which is inserted and connected so that the step portion 16 abuts on the upper end of the opening 12 is formed into a detent shape by the claw 18 and the notch 19.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to poles for street lights.

[0002]

[Prior art]

 The pole for street lights is a long pipe structure, but if it is constructed using a single pipe, the strength will increase because the upper part, which does not require strength, will have a large diameter, resulting in material waste. The structure is such that the required lower pole 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 connection 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 in which the lower part is inserted into the opening 2 is a lower part. The pole 4 is welded and fixed to the inside of the pole 1, and the ring-shaped joint cover 5 is fitted into the root portion of the joint pipe 3 protruding from the upper end of the lower pole 1, and the joint pipe 3 is fitted to the pipe 3. An upper pole 6 having an inner diameter is inserted, a lower end of the upper pole 6 is supported by a joint cover 5, and a plurality of places of the joint pipe 3 and the upper pole 6 are connected by a set bolt 7.

[0004]

[Problems to be solved by the device]

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

Further, the joint pipe 3, the joint cover 5 and the set bolt 7 are required for connection, and the number of parts is increased 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]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention consists of a lower pole whose upper end is narrowed to a small-diameter opening, and an upper pole which is inserted into and connected to the upper opening of this lower pole. At the position near the upper end, there is an inner diameter that fits the lower end of the upper pole, and a detent flange with a claw protruding from the inner circumference is fixed, and the upper end opening of the lower pole is attached to the peripheral wall in the middle of the lower part of the upper pole. A stepped portion that abuts the periphery is formed, and a notch that engages with a claw of the flange is provided on the peripheral wall of the lower end portion of the upper pole so that the cutout is opened at the lower end edge.

[0008]

[Action]

 Insert the lower part of the upper pole into the upper opening of the lower pole.In the lower pole, fit the lower end of the upper pole into the flange with the lower notch of the upper pole aligned with the tab of the flange. If the portion 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]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

As shown in the drawing, the lower pole 11 made of a pipe is drawn at its upper end to form a small diameter opening 12 at its upper end, and is folded back toward the inside at the peripheral edge of this opening 12. A piece 13 is provided.

The upper pole 14 is formed by using a pipe having a diameter smaller than that of the lower pole 11. An outer diameter small diameter portion 15 that fits into the opening 12 is provided at a lower end portion in a predetermined length. The upper end of 15 forms 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. A claw 18 is projectingly provided on the. The small diameter portion 15 inserted into the opening 12 of the upper pole 14 is set to have a length such that the lower end portion of the small diameter portion 15 fits in the flange 17 in a state where the step portion 16 abuts on the folded piece 13.

A notch 19 that is externally fitted and engaged with a pawl 18 is provided on the lower end peripheral wall of the small diameter portion 15 of the upper pole 14. As shown in FIG. 1, the notch 19 is opened at the lower end of the small diameter portion 15, faces upward in the axial direction, is bent at a right angle in the radial direction on the way, and is formed again in the shape facing upward. Has been done.

In order 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.

In order to smoothly engage the claw 18 and the notch 19, a position display 20 of the claw 18 is provided directly above the claw 18 on the outer surface of the upper end portion of the lower pole 11, and the small diameter portion 15 is provided. On the outer surface, directly above the cutout 19, a display 21 indicating the position and shape of the cutout 19 is provided.

The pole of the present invention has the above-described structure, and in order to connect the upper pole 14 to the lower pole 11, as shown in FIG. When 15 is inserted into the opening 12 and the lower end of the small diameter portion 15 is fitted into the flange 17, the lower half of the notch 19 is fitted onto the pawl 18 and the upper pole 14 is rotated during the insertion. Then, the inner end side of the notch 19 is fitted into the notch 19 so that the upper pole 14 is completely inserted, and the tapered step portion 16 abuts against the folded piece 13 of the opening 12, and as shown in FIGS. The upper pole 14 is connected to the upper end of 11 in a non-rotating manner.

In order to improve the waterproofness 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 previously attached to the surface of the folded piece 13, and the stepped portion 16 and the folded piece 13 are attached. Waterproof the overlapping surface.

[0018]

【effect】

 As described above, according to the present invention, the step portion that abuts on the opening is provided on the outer periphery of the upper pole that is inserted into the upper opening of the lower pole, and the flange that fits the lower end portion of the upper pole is provided inside the lower pole. Since it was fixed, the claw provided on this flange was engaged with the notch provided on the lower part of the upper pole, so that the lower pole and the upper pole were locked in the state without any members exposed to the outside. It can be connected, and the finish can be done with a neat appearance.

Further, since the connecting parts for the lower pole and the upper pole are only 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 Section 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.
A step portion that has an inner diameter to which the lower end of the upper pole fits, and that has a detent flange that projects from the inner circumference and is fixed, and that 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.