JPS6042140Y2 - Grating for the lid - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an opening/closing mechanism for a grating for a drainage basin.

Gratings that can be opened and closed are used to cover drainage basins because it is necessary to clean out the dirt and grime that has accumulated in the basin.

There are two types of gratings: one that opens by leaning against the shoulders formed on the sidewalks on both sides of the road, and the other that opens in the direction of the extension of the road, that is, parallel to the sidewalk.

The present invention relates to the latter opening/closing mechanism.

Conventionally, this type of retractable grating has a flat plate shape with pins erected on the front surface of one end and the back surface of the other end, as shown in the plan view in Fig. 1 and the partially enlarged cross-sectional view in Fig. 2. The member is used as a hinge fitting, and one pin of this fitting is loosely fitted into the pin hole of the receiving frame, and the other pin is rotatably fitted into the pin hole of the bearing par, creating a mechanism that opens and closes as if by a crank motion. things have been used.

However, since this mechanism has two links, the grating makes complicated movements when opening and closing, and the left and right hinges do not synchronize, so the mechanism operates in a jerky manner, and smooth opening and closing cannot always be expected.

The present invention eliminates the above-mentioned drawbacks and provides a grating for a pan lid that can be smoothly opened and closed using an extremely simple mechanism.

The present invention will be explained according to examples as follows.

Figure 3 is an enlarged plan view of the main part, and Figure 4 is A-A in Figure 3.
A sectional view and FIG. 5 are sectional views showing the operating state.

Reference numeral 1 denotes a flat plate that acts as a hinge fitting, and has an appropriate shape such as a rectangle with a thickness that allows it to slide freely into the gap between the grating 2 and the receiving frame 3.

A receiving frame fixing pin 31 is placed at an appropriate position in the upper corner of this flat plate 1.
A hole 11 for loosely fitting is penetrated.

Further, a hole 12 for loosely fitting a grating fixing pin 21 is passed through the receiving frame fixing pin hole 11 at a horizontal position or slightly below the hole 11 for the receiving frame fixing pin.

Reference numeral 13 denotes a guide groove drilled below the hole 12 for the grating fixing pin, and its shape is an arc of an appropriate length centered on the hole 12, and its width is free for the movable pin 22 fixed to the grating. to allow sliding.

The grating 2 is made by arranging bearing pars 23 having an I-shaped cross section in parallel at appropriate intervals, fixing an appropriate number of twisted pars 24 perpendicular to the bearing pars 23 and combining them in a lattice shape, and further fixing end plates 25 to both ends of the bearing pars 23. An integrated unit is used.

Bearing pars 23a at both ends of this grating 2
A fixing pin 21 is provided upright at one end of the outer surface of each of the holes 1 and 23b.
2, the upper end 14 of the flat plate 1 approximately coincides with the upper edge of the bearing par 23, and the side surface 15 of the flat plate 1 approximately coincides with the outside of the end plate 25.

Furthermore, a movable pin 22 is provided on the outer surface of the bearing pars 23a and 23b below the fixed pin 21, and its position is such that the grating 2 is connected to the receiving frame 3 as shown in FIG.
When stored in the flat plate 1, it is positioned at the leftmost end 13a of the guide groove 13 of the flat plate 1.

The receiving frame 3 is made up of a member 32 having a rectangular cross-section in a rectangular shape slightly larger than the grating 2, and is buried and fixed in the ground.

Fixing pins 31 are erected on the inner sides 32a and 32b of the long side corners of this receiving frame 3, and the positions of the fixing pins 31 are
1 is loosely fitted into the hole 11 of the flat plate 1, the upper end of the flat plate 1 approximately coincides with the upper edge of the bearing par 23, and the side surface 15 of the flat plate 1 approximately coincides with the outside of the end plate 25.

To attach this flat plate 1 to the grating 2 and the receiving frame 3, the fixed pin 21 of the grating is inserted into the hole 12 of the flat plate 1, and the movable pin 22 of the grating is loosely fitted into the guide groove 13 of the flat plate 1, and then the receiving frame is fixed. The pin 31 may be inserted into the hole 11 of the flat plate 1.

Next, the action of this grating will be explained according to the operation diagram shown in FIG.

In the action explanatory diagram of Fig. 5, the movement of grating 2 is 01
~C4, movement of the fixing pin 21 of the grating h~b4,
The movements of the movable pins 22 of the grating d1 to d1 and the movements of the flat plate are shown as e1 to e2.

When the grating 2 is stored in the receiving frame 3, the grating 2 is at C1, the fixed pin 21 and movable pin 22 of the grating are at bl and dl, respectively, and the flat plate 1 is at el.

Next, when the other end of the grating 1 is lifted, the grating rotates using the fixing pin 21 as a first fulcrum and moves from C1 to C02.

At this time, the lower end corner of the grating passes under the fixing pin 21, so the flat plate 1 is lifted centering around the fixing pin 31 of the receiving frame, so that the fixing pin 21 of the grating moves toward the bottom.

On the other hand, the movable pin 22 of the grating is connected to the guide groove 1 of the flat plate 1.
Since the grating 1 moves smoothly by sliding 3, the grating 1 moves smoothly from side to side without rattling.

When the grating 1 is further rotated and reaches the position C3, it returns to the original height at the fixed pin 21 position, but the movable pin 2
2 is a guide groove 13 of the flat plate 1 according to the rotation of the grating.
Slide inside and reach d3.

Even during this operation, the left and right movement of the grating 1 is restricted, so its rotation is extremely smooth.

Furthermore, when the movable pin 22 comes into contact with the end 13b of the guide groove 13 of the flat plate 1 as the grating 1 rotates, the flat plate 1 rotates together with the grating around the receiving frame fixing pin 31, and the grating is turned 180 degrees to the position C4. When the plate 1 reaches C2, the fixed pin 21 and the movable pin 22 are connected again.
come to the positions b4 and ton, respectively, and the operation of opening the grating is completed.

The grating can be closed by performing the operations in the reverse order as described above.

In addition, the fixing pin 31 of the receiving frame and the fixing pin 21 of the grating
, and the relative positions of the movable pin 22 may be appropriately selected according to conditions such as the height of the grating.

Further, in this embodiment, a type in which the pin is fixed to the receiving frame 3 and the grating 2 is shown, but conversely, the fixed pin 3
1 and 21 are fixed to the flat plate 1, and holes into which the pins are loosely fitted are bored in the receiving frame and the grating, but the operation is the same.

The configuration of the present invention is as explained above, but as a result, it differs from the conventional hinge mechanism with two pins.
The horizontal movement of the grating during opening and closing is restricted by the action of the flat plate having guide grooves, so the movement is extremely smooth as the left and right hinges are synchronized.

In addition, even when the movable radius is large relative to the distance between the fulcrums, it can be opened and closed extremely smoothly and with little effort.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventionally used retractable grating, Fig. 2 is an enlarged cross-sectional view of the hinge portion, Fig. 3 is a partial enlarged view of the grating according to the present invention, and Fig. 4 is a partially enlarged view of the grating according to the present invention.
The sectional view taken along the line A-A and FIG. 5 are explanatory views of the function of the hinge portion. 1 is a flat plate, 11 is a hole drilled in the flat plate into which a receiving frame fixing pin loosely fits, 12 is a hole drilled in the flat plate into which a grating fixing pin loosely fits, 13 is a guide groove, 2 is a grating, and 21 is a fixing of the grating. pin, 22 is a movable pin, 3 is a receiving frame, 3
1 is a fixing pin of the receiving frame.

Claims (1)

[Scope of utility model registration request] A hole 11 into which the fixing pin 31 of the receiving frame is fit is bored in the upper corner, and a hole 12 into which the grating fixing pin 21 is loosely fitted is bored in the hole 11 at an appropriate distance of approximately the same height. A flat plate 1 is provided below the pin hole 12 with a guide groove 13 having an appropriate arc length centered on the pin hole 12 and into which the movable pin 22 of the grating fits loosely, and the hinge metal fittings are used. The fixing pin 31 of the receiving frame 3, the fixing pin 21 and the movable pin 22 of the grating 2 are inserted into the hole 1 of the flat plate 1.
1. First, a lid grating having an opening/closing mechanism loosely fitted into the guide groove 12 and the guide groove 13.