JP2517075Y2 - Hinged structure of lid for underground structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a hinge structure for a lid for an underground structure in which a lid body is openably and closably supported with respect to a receiving frame.

In addition, the "cover for underground structure" referred to in the specification of the present application means a large iron cover, a manhole cover, a sewage pipe cover, an electric power / An openable / closable iron lid for transmission, an iron lid for power transmission, an iron lid for power distribution, which protects underground facility equipment and wiring for communication.
Digestion stopper lid, water control valve lid, partition valve lid, air valve lid, gas pipe lid, and volume water that function as an opening and closing door that connects underground conduits and their accessories in the waterworks and gas pipes and their accessories to the ground. Collectively refers to vessel lids.

<Prior Art> In the above-mentioned underground structure lid, in order to open and close the opening of the receiving frame that connects the inside of the receiving frame and the ground,
The receiving frame and the lid body are connected by a hinge.

As the above-mentioned hinge tool, for example, as described in Japanese Utility Model Publication No. 50-39025, the upper end of the hinge rod is rotatably pivotally attached to one side of the lower surface of the lid body, and is attached to one side of the inner surface of the receiving frame. The most common structure is one in which the hinge rod is inserted into a protruding hole seat.

<Problems to be solved by the invention> However, in the hinge having the above-described structure, since the hole seat is projected on the inner surface of the receiving frame, the effective area of the opening becomes narrow,
For example, there has been a problem that when an instrument or the like is carried into the opening, it is caught, or when an operator moves up and down, it becomes an obstacle.

As a hinge for a lid for an underground structure that can solve the above-mentioned problems, there is a hinge disclosed in Japanese Utility Model Publication No. 57-22567.

In the conventional hinge tool described above, the receiving frame and the lid body are laterally oriented U
Since it is pivoted by the letter-shaped connecting rod, if the connecting rod is damaged after the receiving frame is installed on the road surface, the receiving frame must be excavated and the whole must be replaced, and one end of the connecting rod is covered. To rotatably attach to the lower surface of the main body, tightening with bolts on site and work at the time of welding the pins are required, and assembly and replacement work is extremely troublesome.

The present invention has been proposed in view of the above, and the purpose thereof is to support the lid main body to be openable and closable with respect to the receiving frame without forming a protruding portion on the inner surface of the receiving frame, and to assemble and replace it very easily. The object is to provide a hinge structure for the lid for the underground structure.

<Means for Solving the Problems> In order to achieve the above-mentioned object of the present invention, a hinge structure of a lid for an underground structure of the present invention includes a lid body, a receiving frame for supporting the lid body, and the lid body. And a connecting member in the form of a bendable strip for connecting the receiving frame to the receiving frame, and a connecting groove for pivotally supporting a lid shaft supporting portion formed at one end of the connecting member on one side of the lower surface of the lid body. And a guide portion having a guide groove for pivotally supporting the receiving frame shaft supporting portion formed at the other end of the connecting member is formed on one side of the inner surface of the receiving frame.

Further, the guide groove for pivotally supporting the receiving frame pivotal support portion of the connecting member and the connecting groove for pivotally supporting the lid pivotal support portion may be provided with a passage portion and a pivotal support portion continuous to the passage portion. It is also possible to form a stopper portion at the passage portion of the guide groove and the passage portion of the coupling groove to prevent the receiving frame shaft support portion and the lid shaft support portion from coming off.

Further, the receiving frame pivotal support portion and the lid pivotal support portion of the connecting member may be formed so as to project on the left and right side surfaces of the bulging portion protruding at the end of the connecting member.

<Operation> In the hinge structure of the lid for the underground structure of the present invention, one end of the hinge is pivotally supported on the inner surface of the receiving frame in order to widen the receiving frame opening of the connecting member for connecting the lid main body and the receiving frame. Further, even after the receiving frame is installed in the ground, the receiving frame shaft supporting portion of the connecting member can be loosely mounted on the pivoting portion through the passage of the guide groove formed in the guiding portion of the receiving frame, and the connecting member can receive the connecting frame. Even after mounting on the lid, the lid shaft supporting portion of the connecting member is loosely mounted in the shaft supporting portion through the passage of the connecting groove formed in the connecting portion of the lid body, and the connecting member connects the lid body and the receiving frame. be able to.

<Example> Hereinafter, the present invention will be described in detail based on an example of the drawings.

FIG. 1 shows a usage state of a hinge structure of a lid 1 for an underground structure of the present invention. The underground structure lid 1 is a disc-shaped lid main body 2 and an annular receiving frame for supporting the lid main body 2. 3 and a strip-shaped and flexible connecting member 4 for connecting the lid main body 2 to the receiving frame 3 in an openable and closable manner.

The outer peripheral surface of the lid body 2 is formed with a taper portion 11 that is gradually reduced in diameter downward, and a pair of left and right connecting members are formed on one side of the lower surface of the lid body 2 at intervals slightly wider than the lateral width of the connecting member 4. The portions 12 are arranged in parallel so as to extend along the radial direction of the lid body 2. A connecting groove 12a is formed on each of the facing surfaces of the connecting portion 12 described above, and the connecting groove 12a has a passage portion 13 having a narrow vertical width whose tip opens toward the center of the lid body 2 in the lateral direction. A pivotal support portion 14 having a larger vertical width than that of the passing portion 13 is provided at the rear end of the passing portion 13 so as to communicate with the passing portion 13.

A hemispherical stopper portion 15 is provided in the middle of the passing portion 13.

On the other hand, above the inner peripheral surface of the receiving frame 3 is formed a taper portion 21 which is fitted to the taper portion 11 of the lid main body 2 and supports the lid main body 2 and which has a diameter gradually widening upward, and the lower end of the taper portion 21 is formed. A shelf portion 22 is formed on the lid 22 to receive the lid body 2 and prevent the lid body from being excessively bited when an excessive load is applied to the lid body 2. A pair of left and right guide portions are provided below the shelf portion 22 at intervals slightly wider than the lateral width of the connecting member 4.
23 are arranged in parallel in the vertical direction.

A guide groove 23a is formed on the facing surface of the guide portion 23,
The guide groove 23a is provided with a passage portion 24 having a narrow lateral width with the tip opening to the lower end of the guide portion 23, and a pivot portion 25 having a wider lateral width than the passage portion 24 is provided at the upper end of the passage portion 24. It is connected to 24 and is recessed. A stopper portion 26 having a low height is also provided in the middle of the passage portion 24.

The connecting member 4 for connecting the lid main body 2 and the receiving frame 3 is made of, for example, a polyurethane resin and has a thin band plate shape having elasticity and flexibility, and bulging portions protruding to the outer surface at upper and lower end portions. 31 and 31, the left and right side surfaces of the one bulge portion 31 are pin-shaped shaft support portions 33 for lids having a diameter slightly smaller than the vertical width of the first passage portion 13.
However, on the left and right side surfaces of the other bulge portion 31, pin-shaped receiving frame shaft support portions 32 having a diameter slightly smaller than the radial interval of the passage portion 24 are provided so as to project laterally.

The lid body 2, the receiving frame 3, and the connecting member 4 of the underground structure lid 1 according to the present invention have the above-described configuration. To connect the lid body 2 to the receiving frame 3 by the connecting member 4, the connecting member 4 can be opened and closed. With the bulging portion 31 at the lower end of the receiving frame 3 directed toward the center side of the receiving frame 3, the guide portions 23 of the receiving frame 3 are applied from below, and the left and right receiving frame shaft support portions 32, 32 are passed through the passage portions 24 of each guide portion 23. It is inserted upward from the lower end of the opening and is loosely mounted in the pivotal support portion 25. In this case, each passage 24
Since the stopper portion 26 is provided inside, it is somewhat caught when the receiving frame shaft support portion 32 passes, but it may be pushed in by force and inserted. In the above-described state, one end of the connecting member 4 is held by the left and right guide portions 23 and hangs downward in the receiving frame 3, so that the connecting member 4 is rotated to a substantially horizontal position and then bent upward. Then, the bulging portion 31 at the other end is directed downward, and the bulging portion 31 is placed along the lower surface of the lid main body 2.
31 is applied between the left and right connecting portions 12, 12, and the left and right lid shaft supporting portions 33, 33 are laterally inserted through the passage portion 13 of each connecting portion 12 from the opening end against the stopper portion 15. Play in the branch 14.

Therefore, the lid main body 2 is connected to the receiving frame 3 by the connecting member 4, but when the lid main body 2 is in the closed state, the connecting member 4 has a substantially U-shaped lateral direction as shown by an imaginary line in FIG. The tip ends of the bulging portions 31 at both ends contact the lower surface of the lid main body 2 and the inner surface of the receiving frame 3, the lid pivotal support portion 33 is below the passing portion 13, and the receiving frame pivotal support portion 32 is from the passing portion 24. Since they are located on the center side of 3, respectively, the lid shaft-supporting portion 33 and the receiving frame shaft-supporting portion 32 are not disengaged from the pivotal supporting portions 14 and 25.
Then, when the lid body 2 is flipped 180 degrees in the vertical direction, the connecting member 4 extends and the receiving frame 3 can be largely opened.
When the lid main body 2 is returned and rotated, the connecting member 4 is bent and the receiving frame 3 can be closed.

In this way, the lid body 2 can be flipped 180 degrees in the vertical direction to open and close the receiving frame 3 largely, but at the time of this operation, the tips of the bulging portions 31 of the connecting member 4 are the bottom surface of the lid body 2. Since the lid shaft-supporting portion 33 and the receiving frame-supporting portion 32 are in contact with the inner surface of the receiving frame 3 and are displaced from the passing portion 13 and the passing portion 24, respectively, the lid shaft-supporting portion 33 and the receiving frame-supporting portion are disposed. Even if 32 has a diameter capable of passing through the passage portion 13 and the passage portion 24, the pivot portion 14,
It does not come off from the pivot 25. The shaft support 33 for the lid,
If the receiving frame shaft support 32 has an elliptical shape with a short diameter that allows the passage portion 13 and the passage portion 24 to pass through and a long diameter that does not allow passage, it becomes even more difficult to disengage when the pivot support portions 14 and 25 are loosely mounted.

FIG. 1 is a vertical cross-sectional view showing a use example of the present invention. In this use example, an underground structure for protecting the upper end of a sewage pipe a standing upright from a sewer main (not shown) buried in the ground. Although it is used as a lid for objects, the present invention is not limited to such a case, and can be used for manholes or other underground valve chambers.

Although the present invention has been described above based on the embodiments of the drawings, the present invention is not limited to the above embodiments and can be implemented in any manner as long as the configuration described in the claims for utility model is not changed.

For example, while the lid support shaft is pivotally supported by the connecting groove formed on the inner surface of the pair of left and right connecting portions, the connecting groove formed on the left and right wall surfaces of the connecting portion protruding at one place on the back surface of the lid main body allows the shaft to be supported. You may support it.

Similarly, the guide frame formed on the inner surfaces of the pair of left and right guides is configured to pivotally support the receiving frame shaft support portion.However, the guide grooves formed on the left and right wall surfaces of the guide portion protruding at one place on the inner surface of the receiving frame You may pivot it.

<Effects of the Invention> As described above, in the hinge structure of the lid for the underground structure of the present invention, the lid body, the receiving frame that supports the lid body, and the bendable strip plate that connects the lid body and the receiving frame. And a connecting portion having a connecting groove for pivotally supporting the shaft support portion for the lid formed at one end of the connecting member, and the inner surface of the receiving frame. Since the guide part having a guide groove for pivotally supporting the receiving frame shaft supporting part formed at the other end of the connecting member is formed on one side, it should be opened widely without narrowing the effective area of the receiving frame opening. You can

Further, the guide groove for pivotally supporting the receiving frame pivotal support portion of the connecting member and the connecting groove for connecting the lid pivotal support portion are provided with the passage portion and the pivot support portion continuous to the passage portion. Not only can it be used, but the lid body can be easily connected to the receiving frame by a connecting member at the installation site.

Further, a stopper portion for preventing the receiving frame shaft support portion and the lid shaft support portion from coming off is formed in the passage portion of the guide groove and the passage portion of the connection groove, and the receiving frame shaft support portion and the lid shaft support portion of the connecting member are formed. Since it is formed by projecting on the left and right side surfaces of the bulging portion protruding at the end of the connecting member, it is possible to easily prevent the connecting member from coming off after being connected. And even if the lid body or the connecting material is damaged or becomes unusable due to long-term use, it is possible to replace it very easily without screwing or welding and excavating the receiving frame. it can.
In addition, since the receiving frame can be opened to a very large extent simply by reversing the lid body 180 degrees, it has high practical value.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a vertical sectional view of a state of use, Fig. 2 is a partially enlarged vertical side view, Fig. 3 is a vertical front view, and Fig. 4 is a lid. It is a bottom view of a main body. 1 is a lid for underground structure, 2 is a lid main body, 3 is a receiving frame, 4 is a connecting member, 12 is a connecting portion, 12a is a connecting groove, 13 is a passage portion, 14 is a pivotal support portion, 23 is a guide portion, and 23a is a guide. Grooves, 24 is a passage portion, 25 is a pivotal support portion, 32 is a receiving frame pivotal support portion, and 33 is a lid pivotal support portion.

Claims (7)

(57) [Scope of utility model registration request] 1. A lid main body, a receiving frame that supports the lid main body, and a bendable strip-shaped connecting member that connects the lid main body and the receiving frame, and one side of a lower surface of the lid main body is provided. A connecting portion having a connecting groove for pivotally supporting the shaft supporting portion for the lid formed at one end of the connecting member is formed, and the receiving frame shaft supporting portion formed at the other end of the connecting member is pivotally supported on one inner surface of the receiving frame. A hinge structure for a lid for an underground structure, characterized in that a guide portion having a guide groove for forming is formed. 2. The underground structure according to claim 1, wherein the guide groove for pivotally supporting the receiving frame pivotal support portion of the connecting member is provided with a passage portion and a pivot support portion continuous with the passage portion. Hinge structure of the lid. 3. The hinge structure for a lid for an underground structure according to claim 2, wherein a stopper portion for preventing the receiving frame pivotal support portion from coming off is formed at a passage portion of the guide groove. 4. The underground structure according to claim 1, 2 or 3, wherein the receiving frame shaft support portion is provided on the left and right side surfaces of a bulging portion protruding at an end portion of the connecting member. Hinged structure of the lid for things. 5. The connecting groove for pivotally supporting the shaft supporting portion for the lid has a passage portion and a pivot portion continuous with the passage portion, which are recessed. Hinged structure of the lid for underground structures. 6. A hinge structure for a lid for an underground structure according to claim 5, wherein a stopper portion for preventing the lid shaft supporting portion from coming off is formed at a passage portion of the connecting groove. 7. The shaft supporting portion for the lid is provided so as to project from left and right side surfaces of a bulging portion protruding at an end portion of the connecting member. The hinge structure of the lid for the underground structure according to 6.