JPH052687Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to covers for underground structures such as manholes.

(Prior art) When opening this type of lid, the opening tools are caught between the receiving frame and the lid and cannot be removed until the lid is first pried open.
When the lid is pulled out after being pried open, there is no easy way to support the lid opening tools, so the tips of the tools used may come off the lid or the tools may be dropped.

(Technical Problem) The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a stopper cover member for closing the insertion port on the back side of the cover body, and to attach a holding means for opening tools to the stopper cover member. The purpose of this is to prevent the lid opening tools from coming off.

(Technical Means) The purpose is to form an insertion opening 3 in a substantially U-shaped cutout shape into which the lid opening tool 2 can be inserted at the peripheral edge of the lid 1, and on the back surface of the lid 1 inside the insertion opening 3. A locking recess 1a with a hook-shaped cross section is formed so that a locking end 2a at the tip of the lid-opening tool can be locked, and a stopper lid 4a for opening and closing the insertion port 3 is provided at the tip. The lid member 4 is slidably supported on the back surface of the lid body 1 by a pivot shaft 5, and the lid member 4 is attached to the lid member 4 rearwardly from the pivot shaft 5.
This is achieved by providing a bending portion 6 that contacts the back surface of the open lid member to regulate the swing angle of the lid member 4, and a weight 4b that brings the lid member 4 into the closed position.

(Function) The insertion port 3 is an opening formed in a notch shape at the peripheral edge of the lid 1 and surrounded by the frame 10 that receives the lid 1. It is closed so that it can be opened and closed.

There is a rim 3' formed in a hook-shaped cross section on the back surface of the lid body 1 inside the insertion opening 3, and the locking end 2a at the tip of the lid opening tool 2 can be locked therein. When the body 1 is opened from the closed state in which it is fitted into the frame body 10, the stopper lid member 4 is pushed down to lock the locking end 2a and is used to pry the stopper open.

The lid member 4 is provided on the back side of the lid 1 so that it can swing up to a required angle, but is restricted from swinging beyond that. Fix the inserted part by sandwiching it with the back of the lid.

(Embodiment) In the illustrated embodiment, the lid body 1 has a substantially U-shaped notch-shaped insertion opening 3 on the periphery, and the inside of the insertion opening 3 is located on the back side of the lid body at that portion. An engaging recess 1a having a hook-shaped cross section is formed inside the opening edge 3', and the lid opening tool 2 can be locked therein. A weight 4 having a stopper lid 4a at its tip that closes the insertion port 3 from the back side, and a weight 4 at its inner end that closes the stopper lid 4a.
A stopper cover member 4 having a cap member 4b is provided on the cover body 1 so as to be swingable about a pivot shaft 5. A locking portion 4' is formed at the tip of the stopper lid member 4 so as to rise upward.
In addition, when it is attached to the lid 1, the weight 4b behind the pivot shaft 5 is separated from the lid 1 by a predetermined angle, and even if the lid 4a is pushed down with the lid opening tool 2, it is not necessary. A curved portion 6 is provided so as not to go down further. This predetermined angle needs to be such that the locking end 2a of the lid opening tool 2 is sandwiched between the locking portion 4' and the mouth edge 3' of the insertion port 3, so that the locking end 2a is sandwiched and stabilized, making work easier. Also, if the lid 4a can be pushed in as far as necessary,
This is sufficient because it provides enough freedom to allow the locking end 2a to lock into the engagement recess 1a provided in the lid 1 (FIG. 2). In the figure, 7 is a U-shaped holding member into which the stopper lid member 4 is inserted and suspended, 7a is a receiving groove for the pivot shaft 5 provided in the holding member 7, and 8 is a holding member 7 on the back side of the lid 1.
A pair of protrusions having a substantially L-shaped cross section are provided to face each other so that the insertion opening 3 is sandwiched therebetween. Reference numeral 9 indicates a retaining member provided at the rear end of the projection 8, 10 indicates a frame for supporting the cover 1, and 11 indicates a protrusion provided to prevent the cover 1 from digging into the inner edge of the frame 10. The receiving piece 2b also indicates a hook portion at the other end of the lid opening tool 2.

FIG. 5 shows an embodiment in which the length and width of the bridge portion 2b are significantly different. The insertion opening 3 has a radially elongated shape into which the hook 2b can be inserted, and the hook 2b is inserted vertically and turned 90 degrees.
The lid member also requires a vertically elongated lid 4a, and has a locking portion 4' similar to that described above (see FIGS. 1 and 2). Reference numerals 12 and 12 designate a pair of protrusions to which the hook portion 2b can be locked, which protrude inward from the hanging edge 13 of the lid periphery, and are opposed to each other at an interval larger than the width of the protrusions 2c, 2c of the hook portion 2b. The locking walls 12a, 12a at the base end can be used to lock the protrusions 2c, 2c and pull out the lid 1. The other configurations are the same as above.

(Effects) The present invention is constructed as described above, and since the insertion port 3 into which the lid opening tool 2 is inserted is normally closed by the stopper cover member 4, it is possible to prevent rainwater, gravel, etc. from entering the interior. The lid 1 can be pried open by locking the lid opening tools 2 to the locking portion 4' provided on the top surface of the tip of the lid member 4, and the lid 1 can then be slid and pulled out from the frame 10. At this time, the stopper lid member 4 is swung as much as necessary, but the stopper lid member 4 is
Since the rear part is pivotally supported on the back surface of the lid body 1 so as to touch the back surface of the lid body and regulate the swing angle of the member 4 itself, the lid opening tools 2 can be connected to the locking part 4' and the insertion opening. It is held in place by the mouth rim 3' of No. 3, which has the effect of preventing it from accidentally coming off or falling off.

[Brief explanation of the drawing]

The figures show an embodiment of the lid for underground structures according to the present invention. Figure 1 is a perspective view of the main parts of the lid seen from below, Figure 2 is a sectional view for explaining the operation, and Figure 3 is the lid. 4 is a perspective view showing an example of opening tools, FIG. 5 is a perspective view similar to FIG. 1 showing a modified example, and FIG. 6 is a perspective view of an opening tool. This is used in a modification of . DESCRIPTION OF SYMBOLS 1... Lid body, 2... Lid opening tools, 3... Insertion port, 4... Cap lid member, 5... Pivot shaft, 6... Curved portion.

Claims (1)

[Claims for Utility Model Registration] (1) An insertion opening 3 into which the lid opening tool 2 can be inserted is formed in the peripheral edge of the lid 1 in a substantially U-shaped notch, and the insertion opening 3 inside the lid 1 is Locking end 2 at the tip of the lid opening tool on the back side
A locking recess 1 with a hook-shaped cross section is provided to allow locking of a.
A closure member 4, which is provided with a closure 4a at its tip and which opens and closes the insertion port 3, is swingably supported on the back surface of the closure 1 by a pivot shaft 5. A bending portion 6 is attached to the lid member 4 rearward from the pivot shaft 5, and the bent portion 6 contacts the back surface of the lid when the lid member 4 is opened to regulate the swing angle of the lid member 4, and the lid member 4 is placed in the closed position. A lid for an underground structure, characterized in that it is provided with a weight 4b that makes the lid. (2) The swing angle of the stopper lid member 4 is such that the locking end 2a of the lid opening tool 2 is sandwiched between the locking portion 4' of the member 4 and the lip 3' of the insertion port 3. A cover for an underground structure according to claim 1 of the established utility model claim.