JPS59393Y2 - Buffer device in grating groove cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a shock absorbing device in a grating groove cover that covers the upper surface of a groove such as a road side ditch or a cross ditch.

As is well known, a grating groove cover is a groove cover in which both ends of a large number of main pars arranged in parallel are connected to an end plate, and the middle part of the main pars is connected with a plurality of cross bars to form a lattice shape.It is light and can withstand heavy loads. Because it withstands water and has an excellent drainage function, it is often used as gutter covers for road side ditches and cross ditches.

However, the grating groove cover is usually placed on a receiving frame on the edge of the groove, and has the disadvantage that it easily moves horizontally due to frequent vehicle traffic and collides with the receiving frame, generating noise and vibration. There is.

Conventionally, therefore, cushioning materials such as rubber were glued to the bottom and side surfaces of the grating groove cover, or the grating groove cover was fastened with bolts, but these had the drawbacks of being cumbersome to work with and being expensive.

The present invention solves the above-mentioned drawbacks of the conventional method by locking leaf spring-like buffer fittings at multiple locations along the length of the receiving frame, and connecting the receiving frame and the end plate with a chevron-shaped shock absorbing part integrally formed on the upper part of the buffer fitting. The present invention provides a shock absorbing device that elastically presses the side surface of an end plate by interposing the gap between the two, and will be explained below based on the drawings.

Fig. 1 is a partial plan view showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along the line II-II in Fig. 1, and Fig. 3 is a perspective view of the buffer fitting in Fig. 2, including a grating groove cover. 1
As is well known, both ends of a large number of main pars 2 arranged in parallel are connected to an end plate 4, and the middle part of the main pars 2 is connected with a plurality of cross bars 3 to form a lattice shape. 1 is an L-shaped receiving frame 5 fixed to the groove edge
The end plate 4 faces the vertical surface 7 of the receiving frame 5 with a gap S therebetween, and the dimension of the gap S is determined by the manufacturing error of the grating groove cover 1 and the installation error of the receiving frame 5. For example, 5 mm is set as standard in consideration of such factors, but in reality, it varies slightly due to the above-mentioned errors and the like.

The buffer fitting 9 to be interposed in the gap S is the locking part 1
0 and a chevron-shaped buffer part 11 are integrally formed, and in order to lock this buffer fitting 9 to the receiving frame 5,
Horizontal surface 6 at the corner of multiple locations in the length direction, for example, 2 to 3 locations (4 to 6 locations for one groove cover)
A square-shaped locking recess 8 is provided in each of the vertical surfaces 7 so that both ends of the locking portion 10 of the buffer fitting 9 can be locked by the elastic force of a leaf spring.

A chevron-shaped buffer part 11 is provided above the central part of the locking part 10, and when the grating groove cover 1 is lowered onto the receiving frame 5 from above, the chevron-shaped buffer part 11 is compressed so that its top part presses the side surface of the end plate 4 with elastic force.

Further, in order to prevent the grating groove cover 1 on the receiving frame 5 from being pulled out upward, a protrusion 12 is provided at the lower part of the end plate 4 at a position corresponding to the chevron-shaped buffer section 11 to lock onto the lower chevron-shaped portion of the chevron-shaped buffer section 11. It is.

The buffer fitting 9 can be adjusted to the locking force of the locking portion 10 and the chevron-shaped buffer portion 11 by adjusting the thickness, width, etc. of the plate spring material.
It is possible to adjust the buffering force, etc.

Since the present invention is constructed as described above, the buffer fitting 9 has a simple structure and is easy to manufacture, and is therefore inexpensive, and since it is locked to the receiving frame during use, it can be removed when the grating groove cover is attached or removed. Furthermore, by simply pushing the groove cover onto the receiving frame from above, the chevron-shaped shock absorber elastically presses the side of the end plate to prevent the generation of noise and vibration. This has excellent effects such as preventing the groove cover from being pulled out by the protruding part.

[Brief explanation of drawings]

Fig. 1 is a partial plan view showing one embodiment of the present invention, Fig. 2 is an enlarged sectional view taken along line II-II in Fig. 1, and Fig. 3 is a partial plan view showing an embodiment of the present invention.
It is a perspective view of the buffer fitting in a figure. 1: Grating groove cover, 2: Main bar, 3: Cross bar 14: End plate, 5: Receiving frame, 6: Horizontal surface, 7:
Vertical surface, 8: Locking recess, 9: Buffer fitting, 10: Locking part,
11: chevron buffer, 12: protrusion, S: clear.

Claims (1)

[Scope of utility model registration request] In the grating groove cover 1 which is supported on the horizontal surface 6 of the rectangular receiving frame 5 and in which the grate end plate 4 faces the vertical surface 7 of the receiving frame 5 with a gap S, a plurality of corners in the longitudinal direction of the receiving frame 5 are formed. A locking recess 8 is provided in each of the horizontal surface 6 and the vertical surface 7, and a locking portion 10 is provided in which both ends can be locked in the locking recess 8. A leaf spring-like buffer fitting 9 integrally formed with a pressing chevron-shaped buffer portion 11 is locked to the receiving frame 5, and a protruding portion 12 is provided at the bottom of the end plate 4 to lock below the chevron-shaped buffer portion 11. A shock absorbing device for a grating groove cover.