JPH0540124Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for suppressing lateral (horizontal) movement of a cover in a manhole, handhole, or other underground structure.

(Prior art) This type of lid body has a rectangular lid divided into two diagonally.
There are those that are supported at three points, and those that have a lid of any shape and have a structure in which the lower part of the periphery is received by a stepped part around the frame body. The former has good stability, but when external force is applied, it becomes 3
The dot support may shift on the frame and wear out, causing the lid surface to gradually drop or wobble. In addition, the latter type is easier to open and close, especially when opening the lid, compared to the so-called tapered iron lid, which has a tapered surface on both the outer periphery of the lid and the periphery of the frame, and is easier to open and close, especially during the manufacturing process. However, it has the advantage that there is no need to rub the tapered surfaces together. However, it also has the problem of being prone to wear and rattling due to external forces, which may place restrictions on its construction.

(Technical Issues) The purpose of the present invention is to solve the above-mentioned problems, and to provide a device for suppressing lateral movement of a lid for an underground structure that does not cause lateral movement or rattling even when an external force is applied. It is about providing.

(Technical Means) The present invention which achieves the above object has a small pillar 4 having a tapered peripheral surface 3 on the inside of the frame body 2 that receives the lid body 1.
For underground structures, a movable piece 6 having a through hole 5 that fits with the small pillar 4 is attached to the peripheral edge of the lower surface of the lid body 1 by a shaft 7. This is a device for suppressing lateral movement of the lid.

(Example) To explain with the illustrated example, Figs.
The figure shows two diagonal parts 1A and 1B of a rectangular lid 1.
It is a so-called rectangular lid divided into two parts, and the lid body 1 has a hanging edge 11 on its periphery, and has support points 1c, 1d, and 3 corners on its lower surface.
1e is abutted against and received by a step 12 protruding from the inner periphery of the frame 2. 1f indicates a connector for portions 1A and 1B. The small pillar 4 is a base piece 1 protruding from the stepped portion 12.
3.It is a tapered columnar shape that protrudes upward on the top.
The example in Figure 1 consists of tapered peripheral surfaces 3 on four sides, but the small pillars 4 in the example in Figure 2 have vertical grooves 1 on four sides.
4, and the remaining portion relatively protrudes to form a vertically tapered circumferential surface 3.

The movable piece 6 has a rectangular shape slightly larger than the small pillar 4 and has a uniform hole-shaped through hole 5, and has a circumferential shaft 7 that protrudes left and right, so that it can be moved approximately horizontally in a free state without contacting other objects. It is attached to the bearing pieces 15, 15 part so as to maintain the same. 16 is a notch in the hanging edge 11;
7 is a bearing groove, 18 is a retaining member for the shaft 6, 19 is a locking hole in the lid opening member, and 20 is a ridgeline.

The example shown in Fig. 4 and below relates to a lid for a water control valve housing.The lid body 1 has projecting edges 21, 22, and 23 on three sides, and the lower surface of each of them projects inside the frame body 2. It is a three-point support type that is received by a known step (not shown), and is hinged by a hinge metal fitting 24 pivotally supported on one of the projecting edges 21 and a metal fitting receiving ring 25 on the frame body 2 side. 26 indicates its supporting shaft. The small pillars 4 are stepped base pieces 13 provided inside the frame 2.
It has a vertically elongated truncated polygonal pyramid shape with an upwardly projecting surface and is composed of several engaging peripheral surfaces 3, and the ridge line 20 is also formed in the vertical direction as described above.

The movable piece 6 is different from the above example in that it has a conical through hole 5 that fits into the small pillar 4, and has shafts 7, 7 that protrude left and right, so that it can sit approximately horizontally in a free state without contacting other objects. It is attached to the bearing pieces 28, 28 portion through vertically elongated holes 8 so as to maintain the same. The through hole 5 has a larger diameter than the head of the small pillar 4, but may have a smaller diameter than the base, and is engaged at the lower end rim 29 in the middle, and also at the upper end rim 30 when it is tilted. In order to ensure this engagement, it is attached to the lid 1 through a long hole 8 so as to be able to move up and down.

The small pillar 4 that engages with the movable piece 6 is not limited to a truncated polygonal pyramid shape, but may also be a truncated conical shape having a tapered peripheral surface 3, an example of which is shown in FIG. In this case, as long as the through hole 5 is a tapered hole, it may be circular or polygonal with linear sides as described above or shown in the drawings. In the illustrated embodiment, the device 10 of the present invention formed in this manner is disposed at the edge of the lid body 1 on the opposite side to the opening/closing hinge portion. However, it may be provided at the two remaining projecting edges 22 and 23 among the three projecting edges of the lid 1. In each figure, 31 is a hanging edge provided on the peripheral edge of the lid 1, and 32 is a part of the hanging edge provided with the bearing pieces 28, 28.
The notch formed to provide this can be locked by the tip hook 34 of the lid opening member 33.

(Operation and effect of the invention) When the lid body 1 implementing the above-mentioned suppressing device 10 is received by the frame body 2 when the lid is closed, the movable piece 6 is lowered to the tapered circumferential surface 3 of the small pillar 4 or the attached ridge line 20. End rim 2
9, and as a result, the movable piece 6 cannot move to the left or right, so the lid body 1 to which the movable piece 6 is attached can resist external forces and its movement is suppressed.
Further, when the shaft 7 is provided so that the movable piece 6 is kept horizontal in the free state, when the lid body 1 is opened with the lid opening member 33, it becomes free and difficult to get caught.

Therefore, according to the present invention, even if the lid body 1 moves horizontally with respect to the frame body 2 due to the engagement between the small pillars 4 and the movable piece 6, the lid body 1 acts to suppress this movement, even if an external force is applied. , the lid body 1 does not shift or wobble, the wear at the lid receiving part does not progress, and the small pillars 4 have a tapered peripheral surface 3, and the through holes 5 are also uniform. In addition, since it can be formed into a tapered shape, the movable piece 6 will not get caught when opening the lid, making it easier to handle.

[Brief explanation of the drawing]

The drawings relate to a device for suppressing lateral movement of a cover for an underground structure according to the present invention, and FIG. 1 is an exploded perspective view of the first embodiment, FIG. 2 is an enlarged perspective view of a modified example, and FIG.
The figure is a sectional view, Fig. 4 is a plan view of the second embodiment, and Fig. 5 is a plan view of the second embodiment.
The figure is an exploded perspective view, FIG. 6 is a sectional view, FIG. 7 is an exploded perspective view of a modified example, and FIG. 8 is a sectional view of a main part. 1... Lid body, 2... Frame body, 3... Tapered peripheral surface, 4... Small pillar, 5... Through hole, 6... Movable piece,
7... shaft, 8... long hole.

Claims (1)

[Claims for Utility Model Registration] (1) On the inside of the frame 2 that receives the lid 1, one or more small pillars 4 having a tapered peripheral surface 3 are provided to protrude upward. A movable piece 6 having a through hole 5 fitted with the small pillar 4 on the peripheral edge of the lower surface is attached to the shaft 7.
A device for suppressing lateral movement of a lid for an underground structure, which is installed by the following. (2) The shaft 7 of the movable piece 6 is pivotally supported by the lid 1 through the elongated hole 8 in the vertical direction. Device.