JP2012227016A - Pole structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pole structure capable of restraining a branched pole from dropping even if there may be abnormalities on a welded section between a main pole and the branched pole.SOLUTION: The pole structure includes a hollow main pole 13 extended in a vertical direction and having an open hole 12 at a side face, a hollow branched pole 17 wherein one end 14 is inserted into the open hole 12 of the main pole 13 and is welded and a lighting fixture 16 is mounted on the other end, and a fall-preventive member 18 arranged on upper and lower sections on the one end 14 of the branched pole 17 in free elastic projection from an outer peripheral surface 17A and locked to an inner face 13A of the main pole 13.

Description

  The present invention relates to a column structure.

  Conventionally, a column structure in which one end portion of a branch pole is inserted into an opening hole provided in a side surface of a main pole and is fixed by welding, and a lighting device or an electric device is provided on the other end of the branch pole is known ( For example, see Patent Document 1).

Japanese Patent Laying-Open No. 2008-305768 (paragraph 0020, FIG. 3)

  However, in the conventional column structure, when the welded portion between the main pole and the branch pole is damaged, the branch pole may fall.

  An object of the present invention is to provide a pole column structure that can prevent a branch pole from falling even if a welded portion between a main pole and a branch pole is damaged.

  The present invention includes a hollow main pole extending in the vertical direction and having an opening hole on a side surface, one end of which is inserted into the opening hole of the main pole and welded, and a lighting fixture or an electric device attached to the other end. And a fall prevention member provided at the one end of the main pole in the branch pole and locked to the inner surface of the main pole.

  Here, the fall prevention member is formed by a spring member, and when the one end portion of the branch pole is inserted into the opening hole of the main pole, the branch pole is pressed by the peripheral wall portion of the opening hole. A latching piece that elastically deforms inwardly and is elastically restored outward from the branch pole after one end of the branch pole is inserted into the opening hole of the main pole.

  The fall prevention member includes a connecting piece that crosses the diameter portion of the branch pole, and a pair of locking pieces provided at both ends of the connecting piece. It is inserted into a pair of locking holes provided on the outer peripheral surface of the pole.

  According to the present invention, since the fall prevention member provided at one end of the branch pole is locked to the inner surface of the main pole, the branch pole is dropped even if the welded portion between the branch pole and the main pole is damaged. Can be suppressed.

The figure which shows the illuminating device of embodiment which concerns on this invention. Sectional drawing which shows the attachment part of the main pole and branch pole of embodiment FIG. 3A is a perspective view showing the fall prevention member of the embodiment, and FIG. 3B is a perspective view showing a mounting state of the fall prevention member. 4A is a cross-sectional view showing a state immediately before the branch pole to which the fall prevention member of the embodiment is attached is attached to the main pole, and FIG. 4B is a state where one end of the branch pole is inserted into the opening hole of the main pole. 4C is a cross-sectional view showing a state in which the branch pole is welded and fixed to the main pole. FIG. 5A is a cross-sectional view showing a state in which the branch pole is fixed to the main pole by welding, and FIG. 5B is a diagram in which the weld fixing portion between the branch pole and the main pole is damaged, and the fall prevention member of the branch pole is the main The figure which shows the state locked to the inner surface of a pole The perspective view which shows the state by which the fall prevention member of embodiment was fixed to the branch pole by welding Sectional drawing which shows fall prevention member of modification FIG. 8A is a perspective view showing a fall prevention member according to another modification, and FIG. 8B is a cross-sectional view.

Hereinafter, a column structure according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an illuminating device 10 to which a pillar structure according to an embodiment of the present invention is applied. The illuminating device 10 includes a hollow main pole 13 that extends in the vertical direction and has an opening 12 (see FIG. 2) on a side surface 11.

  As shown in FIG. 2, the lighting device 10 has one end 14 inserted into the opening 12 of the main pole 13 and fixed by welding, and a lighting fixture 16 is attached to the other end 15 (see FIG. 1). A hollow technique pole 17 is provided. Instead of the lighting fixture 16, an electric device such as a solar panel may be attached to the branch pole 17. In addition, the lighting device 10 includes a fall prevention member 18 that is provided at one end 14 of the branch pole 17 and is engaged with the inner surface 13A of the main pole 13.

  Next, each of the above components will be described. The main pole 13 and the branch pole 17 are made of, for example, a square tube material. The fall prevention member 18 is stretched over the upper and lower wall portions of the branch pole 17. As shown in FIG. 3A, the fall prevention member 18 is formed in a U shape in a side view by a spring member. A hook-shaped locking portion 20 is provided at the tip of a pair of upper and lower pieces 19 provided at both ends of the U-shape of the fall prevention member 18.

  The pair of upper and lower pieces 19 of the fall prevention member 18 are connected by a connecting piece 21 that crosses the diameter portion of the branch pole 17. As shown in FIG. 3B, the fall prevention member 18 has upper and lower locking portions 20 locked to a pair of upper and lower locking holes 22 provided on the outer peripheral surface of one end portion 14 of the branch pole 17. The branch pole 17 is attached so as to traverse vertically. The locking portion 20 of the fall prevention member 18 projects outward from the outer peripheral surface 17A of the branch pole 17.

  To attach the branch pole 17 to the main pole 13, as shown in FIG. 4A, the locking portions 20, 20 of the fall prevention member 18 are turned up and down, and one end 14 of the branch pole 17 is attached to the main pole 13. Insert into the opening hole 12. At this time, as shown in FIG. 4B, the locking portion 20 is pressed inward by the inner peripheral wall portion of the opening hole 12 and elastically deformed inward from the outer peripheral surface 17 </ b> A of the branch pole 17.

  As the one end portion 14 of the branch pole 17 is further inserted into the main pole 13, the locking portion 20 is completely inserted inside the outer peripheral surface 17 </ b> A of the branch pole 17. When the locking portion 20 of the fall prevention member 18 is completely inserted inside the main pole 13, the pressure applied to the locking portion 20 is removed and elastically restored, and the outer side of the outer peripheral surface 17 </ b> A of the branch pole 17 is removed. Protrusively. As a result, the maximum dimension between the upper and lower locking portions 20 is greater than the diameter of the opening hole 12. In this state, the branch pole 17 is fixed to the main pole 13 by welding.

  In the state where the branch pole 17 is fixed to the main pole 13 by welding, as shown in FIG. 5A, the upper and lower locking portions 20 and 20 of the fall prevention member 18 are separated from the inner surface 13A of the main pole 13. Yes.

  Here, when the weld fixing part between the branch pole 17 and the main pole 13 is damaged for some reason, the branch pole 17 moves in the direction of being pulled out from the main pole 13 by its own weight, as shown in FIG. When the branch pole 17 moves to some extent, the upper and lower locking portions 20 and 20 of the fall prevention member 18 are locked to the inner surface 13A of the main pole 13, and the branch pole 17 is prevented from falling due to its own weight.

  As shown in FIG. 6, the fall prevention member 18 can weld 23 to the branch pole 17 at the boundary between the connecting piece 21 and the upper and lower pieces 19. Thereby, the fall prevention member 18 can be more reliably fixed to the branch pole 17.

  According to the lighting device 10, even when the welded portion between the branch pole 17 and the main pole 13 is damaged, the branch pole 17 is provided on the branch pole 17 when the branch pole 17 moves slightly in the direction of being pulled out from the main pole 13. The locking portions 20 and 20 of the fall prevention member 18 are locked to the inner surface 13 </ b> A of the main pole 13. Thereby, it is possible to suppress the branch pole 17 from falling from the main pole 13.

  Further, since the locking portions 20 and 20 of the fall prevention member 18 have elasticity, when the one end portion 14 of the branch pole 17 is inserted into the opening hole 12 of the main pole 13, Elastically deforms in the direction. Further, after the branch pole 17 is inserted into the opening hole 12 of the main pole 13, the locking portions 20, 20 are elastically restored outward and locked to the inner surface 13 </ b> A of the main pole 13. Therefore, the attachment work of the branch pole 17 becomes easy.

  Further, the fall prevention member 18 has a pair of locking portions 20 provided at both ends of the connecting piece 21, and the pair of locking portions 20 are respectively connected to a pair of engagement portions provided on the outer peripheral surface 17 </ b> A of the branch pole 17. By being inserted into the stop hole 22, the branch pole 17 can be reliably prevented from falling.

(First modification)
FIG. 7 shows a fall prevention member 30 of the first modification. In the following description, the same parts as those in FIGS. 1 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The fall prevention member 30 has a vertically long pipe member 31 disposed in the branch pole 17 so as to cross the diameter portion, and a coil spring 32 is inserted therein. The coil spring 32 urges the locking portion 33 inserted into the upper and lower end portions of the pipe member 31 to the outside.

  The locking portion 33 is formed in a substantially T-shape, its lateral piece 34 is inserted into the branch pole 17, and a wedge-shaped vertical piece 35 projects outwardly from the locking hole 22 of the branch pole 17. . Since the tip of the vertical piece 35 is formed in a wedge shape, it can be easily inserted into the opening hole 12 of the main pole 13 and is securely locked to the inner surface 13A of the main pole 13.

(Second modification)
8A and 8B show a fall prevention member 40 of a second modification. As shown in FIG. 8A, the fall prevention member 40 has locking portions 41 and 41 that are cut and raised at the upper and lower wall portions of the branch pole 17 and project outside the outer peripheral surface 17A. The locking portions 41 and 41 can be elastically deformed inward and outward of the outer peripheral surface 17A and have the same function as the locking portions 20 and 20.

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Side surface 12 Opening hole 13 Main pole 13A Inner surface 14 One end part 15 Other end part 16 Lighting fixture 17 Tech pole 17A Outer peripheral surface 18 Fall prevention member 19 Upper and lower piece 20 Locking part 21 Connecting piece 22 Locking hole 23 Welding 30 Fall prevention member 31 Pipe member 32 Coil spring 33 Locking portion 34 Horizontal piece 35 Vertical piece 40 Fall prevention member 41 Locking portion

Claims (3)

A hollow main pole extending in the vertical direction and having an opening in the side surface;
One end is inserted into the opening hole of the main pole and welded, and a hollow technical pole with a lighting fixture or electric device attached to the other end,
A fall prevention member provided at the one end portion in the main pole in the branch pole and locked to the inner surface of the main pole;
Column structure with The column structure according to claim 1,
The fall prevention member is formed of a spring member, and when the one end portion of the branch pole is inserted into the opening hole of the main pole, the fall prevention member is pressed by the peripheral wall portion of the opening hole, thereby A column structure having a locking piece that is elastically deformed and elastically recovers outward from the branch pole after one end of the branch pole is inserted into the opening hole of the main pole. In the pillar structure according to claim 1 or 2,
The fall prevention member includes a connecting piece that traverses the diameter portion of the branch pole, and a pair of locking pieces provided at both ends of the connecting piece, and the pair of locking pieces are respectively connected to the branch pole. A column structure inserted into a pair of locking holes provided on the outer peripheral surface.

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