JPH0510037Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lid receiving frame characterized by the shape of a groove for receiving a closing lid.

(Prior Art) As shown in FIG. 9, a conventional lid receiving frame has a groove 2a recessed in the circumferential direction on the upper surface of a circular frame 2 to receive and fit the end hanging edge 1a of the closing lid 1. The inner rising peripheral wall 2b constituting the groove 2a is formed into a substantially straight wall and thin.

(Problems to be Solved by the Invention) In the above-mentioned conventional lid receiving frame, when the closing lid 1 is released, the hanging edge 1a of the end is not pressed hard against the inner rising peripheral wall 2b forming a substantially straight wall. When an attempt is made to lift up one side of the closing lid 1 to release it, the end hanging edge 1a acts as a lever and strongly presses against the fragile rising peripheral wall 2b, causing the portion to break.

In order to pull the closing lid 1 straight upward without destroying the rising peripheral wall 2b, a force is required to lift the entire weight of the closing lid 1.

Another problem is that if the water accumulated in the groove 2a freezes or becomes clogged with earth and sand, the lid 1 cannot be easily opened.

(Means for solving the problem) The outer wall is formed into a substantially straight wall, the inner wall provided on the inner periphery thereof is lower than the outer wall, and the outer wall and the inner wall are connected to each other. A lid receiving frame is provided with a groove formed in a concave surface with a gentle radius toward the top of the inner wall. By fitting the retaining edge into the groove, the lid can be released with a small amount of force without destroying the inner wall forming the groove.

(Operations and Embodiments) According to the present invention, when the hand grip provided at one end of the closing lid is grasped and lifted, the hanging edge of the end is formed with a concave radius using the upper edge of the other end of the closing lid as a fulcrum. The bottom surface is rubbed and slid, and the lid is released by leverage.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the outer wall 4 on the upper surface of the circular frame 3 is a substantially straight wall, and the inner wall 5 provided on the inner periphery is higher than the outer wall 4. A concave groove 6 is provided around the periphery, and the bottom surface connecting the outer wall 4 and the inner wall 5 is gently curved toward the upper part of the inner wall 5.

Further, a flange portion 3a is provided outwardly at the lower part of the circular frame 3, and a skirt portion 3b is provided vertically on the lower surface. It fits into the frame and is used as a lid holder frame.

As another embodiment, as shown in FIGS. 3 and 4, an iron frame 7 having a shape in which the outer wall 4 has a cross-sectional shape extending outward is integrally mounted on the upper surface of a cylindrical block 8. At the same time, the height of the skirt portion 3b of the circular frame body 3 is adjusted with mortar 9 filled in the concave surface corresponding to the groove 6 of the iron frame 7, and then the other circular frame body 3 is fitted. Adjust the height of the skirt portion 3b in the groove 6 of the lower circular frame body 3 with mortar 9 filled therein, and then fit the closing lid 1 into the groove 6 of the upper circular frame body 3. Accordingly, the circular frame body 3 can also be used as a raised frame.

As shown in FIGS. 5 to 8 and 10, the cylindrical block 8 is constructed by stacking blocks in which the iron frame 7 is not fitted on the upper surface in multiple stages, and has a block concave surface corresponding to the concave groove 6. Filling with mortar 9 and filling the joints, fitting the skirt portion 3b of the circular frame 3 into the groove of the uppermost cylindrical block 8, and fitting the closing lid 1 into the groove 6. In some cases, the closing lid 1 is directly fitted into the groove 6 of the uppermost cylindrical block 8 and used as a lid receiving frame.

(Effect of the invention) Since the invention is constructed in this way, when one end of the closing lid 1 is lifted, a lever action is applied using the contact surface between the upper edge of the other end of the closing lid 1 and the inner upper part of the outer wall 4 as a fulcrum. It can be easily released with little force. At this time, the lower surface of the end hanging edge 1a of the closing lid 1 slides along the gentle concave surface formed by the groove 6 of the circular frame 3.
There is no strong pressure on the inner wall 5, and the area will not be destroyed.

If water is stored in the groove 6 and the end hanging edge 1a of the closing lid 1 is submerged in the water, bad odors in the circular frame 3 or the cylindrical block 8 will be blocked and a deodorizing effect will be achieved.

Even if dirt accumulates in the groove 6, the closed lid 1 can be released while removing it with the end hanging edge 1a. Even if the stored water freezes, by lifting one end of the closed lid 1, the frozen water can be easily broken and released. can do.

Furthermore, when used as a raised frame, the mortar 9 filled in the grooves 6 is reliably held by the mutual shape of the grooves 6, and a beautiful finish can be achieved by troweling only the inner surface of the mortar 9. ,
In addition, since only the upper surface of the outer wall 4 is exposed, the ground surface has a beautiful finish and the finishing work is easy.

Furthermore, when fitting the cylindrical blocks 8 together,
When the mortar 9 is placed in a concave surface formed in the same shape as the groove 6, the mortar 9 is reliably held and joint filling is easy, and the waterproof effect is great.

As described above, the present invention has a simple structure, is strong, easy to manufacture, and is a useful invention suitable for mass production.

[Brief explanation of drawings]

The left half of Fig. 1 is a half-cut front view showing the present invention in use as a lid holder frame, the right half is a vertical sectional view, the left half of Fig. 2 is a half-cut plan view, and the right half is the same. The bottom view, the left half of FIG. 3 is a half-cut front view showing the present invention in use as a raised frame, the right half is a vertical sectional view, FIG. 4 is a plan view, and the left half of FIG. is a half-cut front view showing the present invention fitted as a lid receiving frame in a cylindrical block stacked in multiple stages, the right half is a vertical cross-sectional view, FIG. 6 is a plan view, and the left half of FIG. Figure 8 shows a front view of the cylindrical block in half, the right half shows a vertical sectional view, Figure 8 shows a plan view of the same, Figure 9 shows a state in which the closing lid is fitted into a conventional lid receiving frame, and the left half shows the same. 10 is a half-cut front view, the right half is a longitudinal sectional view, and FIG. 10 is a cutaway longitudinal sectional view of a main part showing a state in which a closing lid is directly fitted to a cylindrical block. DESCRIPTION OF SYMBOLS 1... Closing lid, 1a... End hanging edge, 3... Circular frame, 4... Outer wall, 5... Inner wall, 6...
Concave groove, 8...cylindrical block.

Claims (1)

[Scope of utility model registration request] The outer wall is formed into a substantially straight wall, and the inner wall provided on the inner periphery is lower than the outer wall, and the bottom surface connecting the outer wall and the inner wall faces toward the top of the inner wall. A lid receiving frame for a closing lid, characterized in that a groove formed in a concave surface with a gentle radius is provided on the upper surface of the frame, and a hanging edge of the end of the closing lid is fitted into the groove. .