JPH0726537U - Street light pole - Google Patents

Abstract

(57) [Summary] [Purpose] The lower pole and the upper pole are connected in a non-rotating and retaining manner to improve the appearance of the connection part and reduce the number of parts for connection. [Structure] An upper end of a lower pole 11 is drawn to form a small-diameter opening 12, and a step portion 16 abutting the upper end of the opening 12 is formed on a peripheral wall of a lower-end small-diameter portion 15 of an upper pole 14 inserted into the opening 12. A detent flange 17 to which the lower end of the upper pole 14 fits is fixed to the upper part of the lower pole 11, and the claw 18 protruding on the inner circumference of the flange 17 and the small diameter portion 15 of the lower end of the upper pole 14 are fixed. The lower pole 11 and the step portion 16 are engaged by engaging with the notch 19 provided and engaging with the lower surface of the flange 17 of the retaining pawl 20 provided on the lower end small diameter portion 15.
Upper pole 1 inserted so that the upper end of the opening 12 abuts
4 is connected in the form of a stopper and a stopper.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a streetlight pole, and more particularly to a connection structure between a lower pole and an upper pole.

[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 has a lower pole whose upper end is narrowed to a small-diameter opening and a small-diameter portion at the lower end. The upper pole consists of an upper pole that is connected by abutting the stepped portion at the upper end of the lower pole around the upper end opening of the lower pole, and has an inner diameter near the upper end inside the lower pole that fits the small-diameter lower end of the upper pole. , A flange with a locking claw protruding from the inner circumference is fixed at a position where the small diameter part penetrates, and the lower end small diameter part of this upper pole has a notch with an open lower end that engages the flange claw and the flange This is a structure in which an elastic retaining claw that engages with the lower surface in the retaining direction is provided.

[0008]

[Action]

 Insert the small diameter portion of the lower end of the upper pole into the upper opening of the lower pole, and fit the lower diameter small portion of the upper pole into the flange with the lower end notch of the upper pole aligned with the tab of the flange in the lower pole. When the upper pole is inserted and the step portion of the upper pole is brought into contact with the opening peripheral edge 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.

When the lower end small diameter portion is inserted into the flange, the elastic retaining claws are restored after being passed through the flange and are engaged with the lower surface of the flange, so that the connection in the retaining state is obtained.

[0010]

【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 has a structure in which a hemispherical drawing process is performed on the upper end portion to form a small diameter opening 12 at the upper end.

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 is a tapered step portion 16 that abuts the peripheral edge of the opening 12.

At a position near the upper end of the lower pole 11, a flange 17 having an inner diameter into which the lower end of the small diameter portion 15 of the upper pole 14 fits and having a tapered inner diameter is fixed by welding. On the lower surface of the flange 17, a claw 18 for stopping rotation that projects toward the inner circumference is provided. 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 thereof fits into the flange 17 in a state where the step portion 16 abuts on the upper edge of the opening 12 through the waterproof packing. Has been done.

A notch 19 is formed 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 is formed in a shape that opens at the lower end edge of the small diameter portion 15 and extends upward along the axial direction.

A portion of the peripheral wall of the small-diameter portion 15 that is located below the lower surface of the flange 17 when the small-diameter portion 15 is inserted into the lower pole 11 engages with the lower surface of the flange 17 in the retaining direction. Elastic retaining claws 20 are provided.

The retaining claw 20 is formed by forming a downward U-shaped cutout in the small diameter portion 15 and bending the portion surrounded by the cutout outward, and when inserting the small diameter portion 15 into the flange 17. The retaining claw 20 elastically displaces inward and passes through the inner periphery of the flange 17, and after passing, it projects outward due to elastic restoration and engages with the lower surface of the flange 17 in an upward retaining direction. become.

In order to smoothly engage the claw 18 and the notch 19, the position 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 outer surface of the small diameter portion 15 is provided. It is preferable that a display indicating the position of the cutout 19 is provided immediately above the cutout 19.

The pole of the present invention has the above-described structure. To connect the upper pole 14 to the lower pole 11, the small diameter portion 15 is inserted into the opening 12 as shown in FIG. When the lower end of 15 is fitted in the flange 17 and the lower part of the notch 19 is fitted on the pawl 18 and the upper pole 14 is pushed further in this state, the retaining pawls 20 provided on both sides of the small diameter portion 15 are flanged. In the completely inserted state in which the tapered step portion 16 is elastically forcedly passed through the inside of the opening 17 and comes into contact with the upper edge of the opening 12 through the waterproof packing 13, the upper pole 14 as shown in FIGS. In the connection state, the detent 20 is engaged with the lower surface of the flange 17 and the detent 20 is engaged with the lower surface of the flange 17 so that the detent and the detent are simultaneously obtained.

[0019]

【effect】

 As described above, according to the present invention, the small diameter portion of the upper pole inserted into the upper end opening of the lower pole is provided with the step portion that abuts on the opening, and the lower pole small diameter portion of the upper pole is provided inside the lower pole. Since the flange to be fitted is fixed, the claw provided on this flange is engaged with the notch provided in the small diameter part of the upper pole, and the elastic retaining claw of the small diameter part is engaged with the lower surface of the flange. The bottom pole and the top pole can be connected in a non-rotating shape and a retaining shape without any members exposed to the outside, and the appearance is neat and the finish can be maintained.

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 Waterproof Packing 14 Upper Pole 15 Small Diameter Part 16 Stepped Part 17 Flange 18 Claw 19 Notch 20 Stopping Claw

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 a small diameter portion at a lower end. The small diameter portion is inserted into an upper end opening of the lower pole, and a step portion at the upper end of the small diameter portion is attached to the upper end of the lower pole. It consists of an upper pole that makes contact with the periphery of the opening and connects it, and has an inner diameter near the upper end in the lower pole that fits the small diameter part of the lower end of the upper pole, and a rotation-stopping claw is protrudingly provided on the inner circumference. The flange is fixed at the position where the small diameter part penetrates, and the lower end small diameter part of this upper pole has a notch with an open lower end that engages the claw of the flange, and an elastic retaining claw that engages with the lower surface of the flange in the retaining direction. Street light pole with and.