JPH0246508Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stopper that prevents parts such as hinges and locking hooks from falling off in a manhole cover for an underground structure.

In this specification, "covers for underground structures" include large iron covers, mounting covers, manhole covers, fire extinguisher covers, water control valve covers, gate valve covers, air valve covers, gas pipe covers, and metering water pipe covers. A general term for container lids, etc.

[Conventional technology]

Conventionally, covers for underground structures such as those mentioned above were manufactured by Jikosho.
As described in Publication No. 59-20438, there is a hinge hardware for connecting the lid body and the receiving frame that receives it, and as described in Publication Utility Model Publication No. 59-35650, the lid body is It has a structure in which a locking hook for locking to the receiving frame is pivoted between a pair of ribs protruding from the lower surface of the lid main body as a pivot path.

In order to prevent parts such as hinges and locking hooks from falling off, bolts and nuts that protrude into the pivot path and lock the parts are used in Publication of Utility Model Publication No. 59-35650. In the configuration disclosed in Japanese Patent Publication No. 20438, the anti-swing device is placed in the pivot path and fixed with bolts and nuts.

[Problem that the invention attempts to solve]

In this conventional structure, the bolt insertion hole of the rib through which the bolt of the bolt/nut is inserted to prevent parts from falling off is close to the back of the lid body, and the space for the pivot path at the mounting position is narrow, making workability difficult. Bad,
The disadvantage is that it takes time to assemble.

Further, in addition to the above, parts such as bolts and nuts are required, and bolt holes and the like must be machined in the ribs of the pivot path, so there is a problem that the number of machining steps is large and the cost is high.

The purpose of this invention is to simplify assembly work by making it possible to fix fasteners that prevent parts such as hinges and locking hooks from falling off and swinging in underground structure lids with simple work. be.

[Means and actions for solving problems]

In order to achieve the above object, the present invention is a stop that prevents parts such as hinge metal fittings or lock hooks from coming off, which are pivoted between a pair of ribs on the back of the lid body as a pivot path. The tool is made of an elastic body having a substantially U-shaped arm, and at least one of the arms has a head for preventing the component from falling off, and the fitting is fitted into a hole for fixing the stopper provided in the rib. It is characterized in that a joining part is formed on the tip side of the arm part.

The engaging part provided at the tip of the arm part of the elastic body fits into the hole for fixing the stopper in the rib to fix the stopper to the lid body, and at the same time, the head provided at the end fits into the hole for fixing the stopper on the rib, and at the same time, the head provided at the end fits into the hole for fixing the stopper. Restrain parts such as hooks to prevent them from falling off the pivot path.

〔Example〕

Hereinafter, the features of the present invention will be specifically explained with reference to embodiments shown in the drawings.

FIG. 1 is a sectional view of a main part showing a hinge attachment part of a lid for an underground structure, and FIG. 2 is a plan view thereof.

The lid main body 1 is mounted on the receiving frame 2 in a tapered fit state, and the hinge hardware 3 suspended on the lower surface is attached to the receiving frame 2.
It is placed through an annular hole seat 4 formed on the inner periphery of the hole.

The hinge hardware 3 is supported by a pivot path 5 formed in a concave shape on the inner surface of a pair of ribs 6 protruding from the lower surface of the lid body 1. That is, the pivot pins 7 provided at both ends of the head of the hinge hardware 3 are inserted from the insertion end 8 of the pivot path 5, and are movable to the support position 9 closest to the edge of the lid body 1. This structure allows for attachment/detachment and pivot support. Further, the pivot path 5 has a shape that curves upward from the insertion end 8, and the support position 9 is slightly depressed downward to support the pivot pin 7 in a stable state.

A protrusion 10 that engages with the lower surface of the hole seat 4 is provided at the lower end of the hinge metal fitting 3 so as to protrude from both sides, and when the lid is opened, the lid body 1 can be turned over in the vertical direction due to the engagement between the projection 10 and the hole seat 4. Can be rotated freely.

Furthermore, a stopper 15 is attached to the rib 6 to prevent the hinge hardware 3 from falling off. A plan view and a perspective view of this stopper 15 are shown in FIGS. 3 and 4, respectively.

The stopper 15 is an elastic body made of synthetic resin or the like, and includes a substantially U-shaped arm portion 16 and the arm portion 16.
A head 17 is formed at the tip of one side, and the head 17 further has a pointed engagement part 1 extending in the direction of the arm on the other side.
There are 8. The stopper 15 is inserted so that the head 17 is located within the pivot path 5 as shown in FIG. and fixed.

When the stopper 15 is attached, the arm portion 16 is elastically deformed to expand when inserted into the pivot path 5. In this state, push in the support position 9 direction,
When the engaging part 18 reaches the position of the stopper fixing hole 19, the engaging part 18 is fitted into the stopper fixing hole 19 by the restoring force of the arm part 16, and the stopper 15 is fixed in a predetermined position. can.

In the above fixing structure of the stopper 14, if the fixing position of the stopper 15 is set so that the head 17 is almost in contact with the upper end surface of the hinge metal fitting 3, the swinging of the hinge metal fitting 3 is restrained and the swinging phenomenon occurs. can be prevented. Moreover, since the stopper 15 is located on the insertion end 8 side of the pivot path 5, the hinge hardware 3 at the support position 9 will not come off from the pivot path 5. Therefore, even if external forces such as opening/closing operations of the lid main body 1 or turbulent pumping pressure of underground water act, the hinge hardware 3 is always kept at the support position 9 of the pivot path 5.
It can be kept inside.

FIG. 5 is a plan view showing another example of the stopper 15, in which a head 17 and an engaging portion 18 are provided at the tips of both arm portions 16. In this case, the attachment to the pivot path 5 is performed in the same manner as described above, but the head 17, which is prone to wear, can be replaced by reversing the direction of attachment to the pivot path 5, which has the advantage of doubling the service life.

In addition, FIG. 6 shows a stopper 15 that is shaped to straddle between the pivot paths 5 of both ribs 6, and both arm portions 16 are inserted into the pivot paths 5, and the engaging portions 18 at both ends are connected to each other. It is configured to be fixed by fitting into the stopper fixing hole 19 of the rib 6. In this case, the upper end of the hinge metal 3 can be reliably prevented from swinging by the two heads 17, and since the arm part 16 closes the insertion end 8 of the pivot path 5, the upper end of the hinge metal 3 can be prevented from falling off. This can be doubly prevented by interacting with 17.

In the above embodiments, the hinge hardware was described, but the stop of the present invention can also be used to prevent a locking hook that is pivotally mounted in a pivot path from falling off.

[Effect of idea]

As explained above, in the component fastener of the lid for underground structures of the present invention, the approximately U-shaped arm portion made of an elastic material is inserted into the pivot path between the ribs on the lower surface of the lid body, and the arm portion is inserted into the pivot path between the ribs on the lower surface of the lid body. The engaging portion provided at the tip is fitted into the hole for fixing the stopper provided in the rib, and in a fixed state, parts such as a hinge metal fitting or a locking hook attached to the pivot path are pressed. Therefore, by utilizing the elastic deformation of the arm portion, it can be easily attached to and detached from the pivot path, and the work can be simplified compared to a fastening structure using bolts and nuts. Further, bolts, nuts, etc. are not required, and machining of bolt holes, etc. in the ribs can be omitted.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the main part of a cover for underground structures in which the stopper of the present invention is arranged, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of the stopper, Fig. 4 is a perspective view of the same, and Fig. 4 is a perspective view of the cover. FIG. 5 is a plan view showing another example of the stopper, and FIG. 6 is a plan view showing still another stopper arranged in the pivot path. 1: Lid body, 3: Hinge hardware (parts), 5: Pivot path, 6: Rib, 7: Pivot pin, 15: Stopper, 1
6: Arm part, 17: Head part, 18: Engagement part, 1
9: Hole for fixing the stopper.

Claims (1)

[Scope of utility model registration request] A stopper that prevents parts such as hinge hardware or locking hooks from coming off, which are pivotally connected between a pair of ribs on the back of the lid body, and the stopper is an elastic body with a substantially U-shaped arm. A head for preventing parts from falling off is formed on at least one of the arm parts,
A component fastener for a lid for an underground structure, characterized in that an engaging part that fits into a fastener fixing hole provided in the rib is formed on the tip side of the arm part.