JPH10114994A - Stainless ditch cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a ditch cover and a tree circle, cost of which is reduced and which are not rusted and have durability, by punching a required number of punched holes to a face plate made of stainless steel, projecting and forming upstanding sections to the face plate along the peripheral sections of the punched holes and constituting a frame-shaped bending section to the peripheral section of the face plate. SOLUTION: A bending section 4 is formed to the whole circumference of the peripheral section of a ditch cover made of stainless steel, and the bending section 4 is engaged and supported at the stepped section of a catch basin. A required number of punched holes 5 are punched to the face plate 6 of the ditch cover. Upstanding sections 7 are worked as structure, in which the upstanding sections 7 resist distortion to the rear of the face plate 6, by projecting the upstanding sections 7 from the face plate 6 on the whole circumferences of the peripheral sections of the punched holes 5, and even a thin stainless steel plate can be utilized. The ditch cover has structure, in which the ditch cover resists the distortion of the face plate 6, by forming the bending section 4 on the whole circumference of the peripheral section of the face plate 6. Accordingly, the ditch cover and a tree circle, cost of which is reduced and which are not rusted and have durability, can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a perforated lid structure such as a stainless steel groove lid or a tree circle.

[0002]

2. Description of the Related Art Conventionally, a groove lid or a tree circle is a casting,
Manufactured from ordinary steel, the former has inconvenience of handling due to its weight, and the latter has a problem of corrosion due to rust and the like.

[0003]

In order to overcome the above-mentioned drawbacks, the present invention employs a stainless steel slotted lid or a perforated lid such as a tree circle. And has the disadvantage of being less practical. Therefore, it is necessary to make the stainless steel thinner.
The disadvantage of distortion occurs.

[0004]

In order to overcome the above-mentioned drawbacks, the present invention provides a required number of punched holes in a stainless steel face plate, and forms a rising portion along the peripheral edge of the punched hole in the face plate. Protrusions are provided, and a frame-shaped bent portion is formed at the peripheral edge of the face plate, the height of the rising portion of the punched hole is made twice or more the thickness of the face plate, and the arrangement of the required number of punched holes of the face plate is adjusted. It provides a perforated lid, such as a stainless steel grooved lid or a tree circle, carved in a zigzag pattern.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view showing a stainless steel groove lid of the present invention installed in a drain groove, and 1 is a drain groove provided with a step portion 3 for installing a groove lid 2. The groove lid 2 is provided with a bent portion 4 around the entire periphery thereof, and the bent portion 4 is installed by being supported by the step portion 3. It is desirable that the adjacent bent portions 4 be welded to each other.
Reference numeral 5 denotes a punched hole, and a required number of holes are formed in the face plate 6 of the groove lid 2. Although the number and arrangement of the punched holes 5 are formed within a range that does not lose the strength of the face plate 6, it is preferable that the arrangement be performed in a staggered manner.

FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIG. 3 is a partially enlarged view in which a punched hole 5 is formed in the face plate 6. A rising portion 7 is formed around the entire periphery of the punched hole 5. Project from the face plate 6. The rising height of the rising portion 7 needs to be at least twice as large as the thickness of the stainless steel face plate 6.

[0007] Simply forming the punched hole 5 in the stainless steel face plate 6 has a problem in strength when the stainless steel is thin. In the present invention, the rising portion 7 protrudes from the face plate 6 around the entire periphery of the punched hole 5. Even a board can be used. Further, since the bent portion 4 is provided on the entire periphery of the peripheral portion of the face plate 6, the structure is resistant to distortion of the face plate 6.

In order to manufacture the rising portion 7 having the above-mentioned height, it is manufactured in one or two steps of first punching a hole having an inner diameter of the punching hole 5 and then raising the peripheral portion by drawing.

Although the embodiment of the groove lid has been described above, the same structure can be applied to a tree circle installed at the root of a street tree as shown in FIG.

[0010]

As described above, according to the present invention, since the bent portion is provided on the entire periphery of the peripheral portion of the punched hole and the peripheral portion of the peripheral portion of the face plate, the slot or tree of the thin stainless steel plate is provided. By enabling a perforated lid like a circle, there is an effect of providing an inexpensive, rust-resistant and durable groove lid or tree circle.

[Brief description of the drawings]

FIG. 1 is a view showing a stainless steel groove lid of the present invention installed in a drain.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partially enlarged view of FIG. 2;

FIG. 4 is a diagram in which the present invention is applied to a tree circle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drainage groove 2 Groove lid 3 Step part 4 Bending part 5 Punching hole 6 Face plate 7 Standing part

Claims (4)

[Claims] 1. A required number of punched holes are formed in a stainless steel face plate, a rising portion is provided along the peripheral edge of the punched hole to protrude from the face plate, and a frame-shaped fold is formed in the peripheral edge of the face plate. Stainless steel groove lid with bent section. 2. A required number of punched holes are formed in a stainless steel face plate, a rising portion is provided to protrude from the face plate along the peripheral edge of the punched hole, and a frame-shaped fold is formed in the peripheral edge of the face plate. A stainless steel tree circle with a bent section. 3. The stainless steel groove lid or tree circle according to claim 1, wherein the height of the rising portion of the punched hole is at least twice the thickness of the face plate. 4. The stainless steel groove lid according to claim 1, wherein a required number of punched holes in the face plate are arranged in a staggered manner.