JPH069301Y2 - Sign pile - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention writes a number, a symbol, etc. in a marking pile having a plastic cap on its head, particularly in a recess provided on the upper surface of the plastic cap. The present invention relates to a marking pile having a fixed display plate and suitable for surveying by a numerical method.

(Prior Art) Conventionally, wooden, concrete, or plastic marking piles have been used for land boundary marking or surveying. In such a marking pile, the head of a prismatic or cylindrical pile body having a sharp tip is capped with a plastic cap colored in red or blue. When conducting numerical surveys using these marking piles, it is necessary to number or mark the marking piles that have been driven into the soil in order. For this reason, conventionally, after driving the marking pile into the soil, numbers or the like were sequentially written on the upper surface or the side surface of the marking pile with paint or the like.

(Problems to be solved by the invention) However, it is troublesome to write numbers and the like on the top surface or the side surface of the marking pile driven into the soil, and it is very inconvenient to carry the paint. In addition, when a number or the like was written on the marking pile, the surrounding area was sometimes polluted, or the number or the like written on the upper surface or the side surface of the marking pile was peeled off by wind and rain.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a marking pile in which numbers, symbols, etc. are not peeled off and moreover, numbers, symbols, etc. are accurately attached.

(Means for Solving the Problems) That is, the present invention is to provide a wedge-shaped locking piece on the peripheral wall of the tip portion at the center of the recess provided on the upper surface of the plastic cap capped on the head of the marking pile. Of the wedge-shaped locking piece, which has a columnar body having a depth lower than the depth of the recess and is provided at the center of the metal display plate housed in the recess. A display pile characterized in that an aperture having a diameter smaller than 0.1 to 1 mm is fitted into the columnar body, and the display plate is fixed in a recess provided on the upper surface of the plastic cap. is there.

(Operation) According to the present invention, after the marking pile is driven into the soil or before it is driven into the soil, the cylindrical body erected in the recess provided in the upper surface of the plastic cap is provided with The display plate (hereinafter referred to as the display plate) is fitted with an opening drilled in the center and fixed in the recess on the top surface of the cap, so the display plate must be attached to the marking pile without fail. You can Further, the display plate fixed in the recess provided on the upper surface of the cap does not come off from the recess due to the locking piece provided on the peripheral wall at the tip of the columnar body.

(Example) Next, one example of the marking pile of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the marking pile of the present invention, which has a sharp tip 5
Of a prismatic body 9 having a prismatic shape and a head 2 having a large diameter provided on the upper part of the body, a plastic cap 3 capped on the head, and a plastic cap 3 The display plate 4 is fixed in a recess provided on the upper surface. The head 2 has a body 9 as shown in FIG.
It may have a larger diameter or the same thickness as the body portion.

The pile main body 1 is made of wood, concrete, or plastic, and usually made of plastic is preferably used.
As the material used for such a plastic pile body, thermoplastic resins such as polyethylene, polypropylene, polyester, styrene, polyamide and polysulfone may be used alone, or as a mixture or waste plastic.

A cap 3 made of a thermoplastic such as polyethylene, polypropylene, fluorine, polycarbonate, polysulfone or polyester or a thermosetting plastic such as phenol or polyimide is capped on a head 2 provided on the upper portion of the pile main body 1. There is. The cap 3 is fixed to a large-diameter head 2 provided on the upper portion of the preliminarily molded pile body 1 with an adhesive or the like, but the cap is inserted into the mold to cap the pile body when molding. 3 may be heat fused to the head 2. As shown in FIG. 2, a recess 6 having an arbitrary shape is provided in the center of the upper surface of the cap 3. A circular recess with a diameter of 2-5 cm is usually provided. A suitable depth of the recess 6 is usually 2 to 5 mm. At the center of the recess, a columnar body 8 having a diameter of 2 to 5 mm and having a locking piece 7 on the peripheral wall of the tip is provided upright. The top of the columnar body 8 needs to be provided lower than the upper surface of the cap so as not to be broken by a hammer when the marking pile is driven into the soil. Further, it is preferable to provide a recess 11 for indicating a fixed point on the upper surface of the cylindrical body as shown in FIG. The locking piece 7 provided on the peripheral wall of the cylindrical body has a wedge shape in cross section, and the outer diameter of the wedge is preferably larger than the diameter of the cylindrical body described later, for example, 0.2 to 2 mm larger. Reference numeral 12 is a vent hole.

It is housed in a recess 6 provided on the upper surface of the cap 3,
As shown in FIG. 3, the display plate 4 fitted in the columnar body 8 provided upright in the center of the recess has the same shape as the recess 6 provided on the upper surface of the cap, and the recess For example, a shape reduced by 0.5 to 2 mm from the above shape is used.

At the center of the display plate 4, the diameter is larger than the diameter of the columnar body 8 erected at the center of the recess 6 of the cap 3, for example,
An opening 10 having a diameter larger by 0.1 to 1 mm, in other words, smaller than the wedge-shaped outer diameter provided at the tip of the cylindrical body by 0.1 to 1 mm is provided. If the diameter of the opening is less than the wedge-shaped outer diameter of 0.1 mm, the display plate fitted in the columnar body may come off, and if it exceeds 1 mm, it becomes difficult to fit it in the columnar body. . If the diameter of the aperture is within the above range, the display plate can be fitted into the cylindrical body, and it is extremely difficult to remove the fitted display plate. As the display plate 4, a metal plate having a thickness of 0.1 to 1.0 mm, such as aluminum or stainless steel having corrosion resistance, is used. Numbers and symbols are engraved or printed on the upper surface of the display plate 4. In addition, an adhesive may be applied to the back surface of the display plate to attach the display plate to the bottom wall of the recess so that the display plate housed in the recess does not move.

In the present invention, as shown in FIG. 4, the marking pile is provided with an opening 10 formed at the center of the pre-display plate 4 at the center of a recess 6 provided on the upper surface of the cap 3. The display plate 4 is fitted in the cylindrical body 8 and fixed in the recess 6 and then driven into the soil. In the marking pile of the present invention, since the depth of the recess 6 provided in the cap 4 is deeper than the height of the columnar body erected in the center of the recess, the head is hammered when driving the marking pile. Even if struck with, the hammer will not hit the columnar body 8 and it will not be destroyed.

In addition, the above-mentioned display board 4 is, after driving the marking pile into the soil,
It may be attached to a recess provided on the upper surface of the cap.

(Effect of the Invention) As described above, the marking pile of the present invention has an opening formed at the center of the display plate on which a number or a symbol is written, and a concave portion of the cap capped on the head of the marking pile. Since it is fitted in the columnar body erected at the center of the sign, it is possible to attach the numbers and symbols to the marking piles very easily and reliably without making a mistake in the numbers and symbols.

[Brief description of drawings]

FIG. 1 is a perspective view of a marking pile of the present invention, FIG. 2 is a cross-sectional view of a cap, FIG. 3 is a perspective view of a display plate, and FIG. 4 is erected at the center of a recess provided in the cap. FIG. 6 is a cross-sectional view showing a state in which a cylindrical body is fitted with an opening formed at the center of the display plate. 1 ... Pile main body, 2 ... Head part, 3 ... Cap, 4 ... Display plate 5 ... Tip part, 6 ... Recess, 7 ... Locking piece, 8 ... Cylindrical body 9 ... Body part 10 ... Open hole

Claims (1)

[Scope of utility model registration request] 1. A wedge-shaped locking piece is provided on the peripheral wall of the tip at the center of a recess provided on the upper surface of a plastic cap capped on the head of the marking pile, and the recess of the recess is provided. A columnar body lower than the depth is erected, and a diameter 0.1 to 1 mm smaller than the diameter of the wedge-shaped locking piece formed in the center of the metal display plate housed in the recess. A marking pile, characterized in that the opening having the above is fitted into the columnar body, and the display plate is fixed in a recess provided on the upper surface of the plastic cap.