JP3668550B2 - Grating noise prevention holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a noise prevention holder that is interposed between a grating end bar and a lid receiving frame fixed to the periphery of a groove to hold the grating.
[0002]
[Prior art]
In order to prevent the grating from moving laterally or rising and generating noise when a vehicle or the like passes over the grating while holding the grating, the gap between the grating end bar and the lid receiving frame is shown in FIG. A known noise prevention holder a is interposed between the end bar and the inner surface of the cover receiving frame to prevent the grating from moving and floating.
[0003]
[Problems to be solved by the invention]
However, as shown in FIG. 9, the holder a having the conventional configuration is fitted to the lower edge of the end bar 3, and the elastic contact piece b protrudes to the side, and the elastic contact piece b is raised up from the lid receiving frame 1. Even if the holder a protrudes downward from the lower edge of the end bar 3, the height h of the end bar 3 is adjusted so that the grating 2 can be mounted on the lid receiving frame 1. It was applicable only to those having a height H lower than 6. This is because the lower edge e of the holder comes into direct contact with the cover receiving surface of the cover receiving frame and the grating cannot be held horizontally in the configuration where the cover is H = h. In addition, when the holder is fitted from the upper edge, the holder a protrudes from the upper surface of the grating, which obstructs walking and the like, and such an application means cannot be adopted.
An object of the present invention is to provide a noise prevention holder that can be applied even when the end bar and the main bar are equal in grating.
[0004]
[Means for Solving the Problems]
The present invention is attached to the corner portion of the grating formed on the four peripheral surfaces by the main bar located at the front and rear and the end bars on both sides located on the lid receiving frames attached to both sides of the groove. A cross-section that has an L-shaped structure including a fixed side portion arranged along the main bar and a side side portion arranged along the end bar, and is fitted to the main bar from the lower edge on the fixed side portion. It is a grating noise prevention holder in which a U-shaped sandwiching portion is formed and an elastic contact piece is formed on the side portion to press-contact the rising inner surface of the lid receiving frame.
[0005]
In this configuration, the sandwiching portion is provided on the fixed side portion, and is fitted to the main bar disposed on the front and rear sides not located on the lid receiving frame, and the side side portion extended to the fixed side portion. Is positioned along the end bar, and the elastic contact piece formed on the side portion elastically contacts the rising inner surface of the lid receiving frame. For this reason, no matter what the height relationship between the main bar and the end bar is, there is no hindrance to application, and it can be applied to gratings of various structures.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, lid receiving frames 1 and 1 having an L-shaped cross section are attached to both upper edges of the drainage groove x and the like, and both ends of the drainage groove x are supported by the lid receiving frames 1 and 1. Grating 2 is applied.
The grating 2 is provided with end bars 3 and 3 at both ends thereof, and a large number of bearing bars 4 and twist bars 5 are vertically and horizontally passed between the end bars 3 and 3 at a constant pitch. The plane in which 6 is arranged has a rectangular shape.
[0007]
The grating 2 is moved in the width direction when a vehicle or the like travels on the grating 2 due to a gap formed between the inner surfaces of the lid receiving frames 1 and 1 and the both sides of the grating 2, or the impact is caused by unevenness of the contact surface. As a result, the horizontal movement and levitation generate noise.
[0008]
Therefore, the noise prevention holder 10 according to the present invention shown in FIGS. 2 to 7 is attached to the end bar 3 of the grating 2.
[0009]
As shown in FIG. 2, the holder 10 has a plane L shape formed by bending a metal plate, and is disposed along the fixed bar 11 disposed along the main bar 6 and the end bar 3. It consists of the side part 12. The holder 10 has a height of 18 mm, a fixed side portion 11 having a length of 80 mm, and a side portion 12 having a length of 40 mm.
[0010]
The fixed side portion 11 is formed with a sandwiching portion 13 having a U-shaped cross section by bending the lower edge of the end portion inward twice. The rising piece 14 of the sandwiching portion 13 has a square cross section and forms a sandwiching edge 15 that elastically contacts the inside. The inner space between the pinching edge 15 and the fixed side portion 11 is slightly narrower than the thickness of the main bar 6, and when the pinching portion 13 is fitted from the lower edge of the main bar 6, the pinching edge 15 Can be elastically contacted with the inner surface of the main bar 6.
[0011]
On the other hand, the side edge portion 12 is divided at its upper edge by a notch 17, and the upper edge of the edge portion is bent outward by about 45 degrees to form an elastic contact piece 18. The shape of the elastic contact piece can be variously proposed such as a configuration in which the curved elastic contact piece 20 is formed by bending outward as shown in FIG.
[0012]
In this configuration, in order to attach the holder 10 to the grating 2, the holder 10 is arranged at the corner of the grating 2, and the lower edge of the main bar 6 is attached to the mouth of the clamping part 13 of the fixed side part 11. The main bar 6 is tightly fitted between the fixed side portion 11 and the sandwiching portion 13 by pressing the sandwiching portion 13 from below. As a result, the fixed side portion 11 is connected to the main bar 6, and the side side portion 12 is disposed along the front surface of the end bar 3, and the elastic contact piece 18 protrudes laterally.
[0013]
After the attachment, the grating 2 is dropped onto the lid receiving frames 1 and 1 while the elastic contact piece 18 is brought into contact with the rising inner surface in an elastic manner, and the tip thereof is bitten into the rising inner surface in a line contact manner.
[0014]
Thus, the elastic contact piece 18 of the holder 10 is interposed between the lid receiving frames 1, 1 and the grating 2 in a compressed manner, and holds the grating 2 on the lid receiving frames 1, 1. Even if a vehicle or the like travels on the grating 2, no rattling occurs and no noise is generated.
[0015]
Further, as shown in FIG. 7, the gratings 2 and 2 are adjacent to each other via the fixed side portions 11 and 11 of the holders 10 and 10.
[0016]
In this configuration, the sandwiching portion 13 is provided on the fixed side portion 11 and is fitted to the main bar 6 disposed on the front and rear sides not located on the lid receiving frame 1, and the lower edge of the sandwiching portion 13. Even if it protrudes from the lower surface of the grating 2, it does not hinder the mounting of the grating 2 on the lid receiving frames 1, 1, and the side part 12 is located along the end bar 3, and the side part 12 Since the formed elastic contact piece 18 comes into elastic contact with the rising inner surface of the lid receiving frame 1, the main bar 6 and the end bar 3 can be applied regardless of the height relationship.
[0017]
【The invention's effect】
As described above, the present invention includes an L-shaped structure including the fixed side portion 11 arranged along the main bar 6 and the side side portion 12 arranged along the end bar 3. A sandwiching portion 13 having a U-shaped cross section that is fitted from the lower edge is formed on the main bar 6 that is not located on the grating 2. Since it is formed, the holder 10 can be applied regardless of the vertical dimensions of the end bar 3 and the main bar 6, and the versatility of the holder 10 is significantly improved. .
[Brief description of the drawings]
FIG. 1 is a perspective view of a grating 2. FIG.
FIG. 2 is a perspective view of a holder 10 according to the present invention.
FIG. 3 is a plan view of the holder 10. FIG.
4 is a front view of the holder 10. FIG.
FIG. 5 is a side view of the holder 10. FIG.
FIG. 6 is a longitudinal side view showing a mounting state of the grating 2;
7 is a longitudinal front view of an adjacent portion cut along the line AA in FIG.
FIG. 8 is a vertical side view showing a modification of the elastic contact piece 18;
FIG. 9 is a longitudinal side view showing a mounting state of the grating 2 using a holder a having a conventional configuration.
[Explanation of symbols]
1 Lid receiving frame 2 Grating 3 End bar 6 Main bar
DESCRIPTION OF SYMBOLS 10 Holder 11 Fixed side part 12 Side part 13 Clamping part 14 Standing piece 15 Clamping edge 18 Elastic contact piece 20 Elastic contact piece

Claims (1)

A main bar located at the front and rear, and end bars on both sides located on the receiving frames attached to both sides of the groove, and attached to the corners of the grating formed on the four peripheral surfaces. A fixed side portion disposed along the end bar and a side portion disposed along the end bar, and a U-shaped cross-section sandwiched from the lower edge of the fixed side portion to the main bar. A grating noise-preventing holder formed by forming a contact portion and forming a resilient contact piece in pressure contact with a rising inner surface of a lid receiving frame on a side portion.

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