JPH0776851A - Hook hole plug for iron cover - Google Patents

Abstract

PURPOSE:To eliminate any need for removing a plug from an iron cover when opening the iron cover and dismiss any potential fear of injuries inflicted by car accidents or the like and prevent rainy water or dust and dirt from being penetrated into a manhole from a hook hole as minimum as possible. CONSTITUTION:A plug, which closes a hook hole 3 formed on an iron cover 1, comprises an elastic material-made closure plate 4, which is designed to close the hook hole 3, and fixing hardware which is specified to fix the enclosure plate 4 with the hook hole 3. A slit 5 which enables a hook to be inserted into the hook hole 3, is formed in cross shape while the fixing hardware is removably mounted to the iron cover 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook hole for an iron lid, and in particular, when opening the iron lid, there is no need to remove it from the iron lid, and there is no risk of damage by a car or the like. The present invention relates to a hook cap for an iron lid that can minimize the intrusion of rainwater, dust, etc. into the manhole.

[0002]

2. Description of the Related Art Conventionally, in order to prevent rainwater, dust, etc. from entering a manhole through a hook hole formed in an iron lid,
The rubber plug 2 as shown in FIG. 9 was fitted into the hook hole 3 of the iron lid 1 from the outside to close the hook hole 3. Hereinafter, this rubber plug 2 will be referred to as a conventional technique.

The rubber stopper 2 is composed of a lid portion 2A having an area larger than the diameter of the hook hole 3 and a foot portion 2B formed in the lower portion of the lid portion 2A and wider than the opening width of the hook hole 3. There is. The foot portion 2B inserted into the hook hole 3 spreads due to its elastic force after passing through the hook hole 3 and prevents the rubber plug 2 from coming off.

[0004]

However, the above-mentioned conventional technique has the following problems. When opening the iron lid 1, it is necessary to remove the rubber stopper 2 from the inside of the hook hole 3, but in order to remove the rubber stopper 2 from inside the hook hole 3, it is necessary to pry open the rubber stopper 2 with a screwdriver or the like.
On the other hand, when closing the iron lid 1, it is necessary to push the foot portion 2B of the rubber plug 2 into the hook hole 3 against the elastic force of the rubber plug 2. In this way, the operation of attaching and detaching the rubber plug 2 is troublesome.

Since the rubber stopper 2 is small, the rubber stopper 2 removed from the inside of the hook hole 3 may be lost.

Since the lid portion 2A is exposed from the hook hole 3, the lid portion 2A is easily damaged by a car or the like.

When the pressing force is locally applied to the lid portion 2A, the rubber plug 2 may be buried in the hook hole 3 and may fall into the manhole.

Therefore, an object of the present invention is that when the iron lid is opened, it is not necessary to remove it from the iron lid, and there is no fear of damage by a car or the like. Furthermore, rainwater, dust, etc., enter the manhole from the hook hole. An object of the present invention is to provide a hook cap for an iron lid, which can be prevented from invading to a minimum.

[0009]

According to the present invention, in a plug for closing a hook hole formed in an iron lid, a closing plate made of an elastic material for closing the hook hole and the closing plate are provided. The closing plate is formed with a cross-shaped slit that allows a hand hook to be inserted into the hook hole, and the fixing bracket is the iron cover. It is characterized by being detachably attached to the.

[0010]

[Function] By forming a cross-shaped slit on the closing plate made of an elastic material, a hand hook can be inserted,
Then, after pulling out the hook, it can be returned to the original state and the hook hole can be closed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention for a hook for an iron lid will be described with reference to the drawings.

FIG. 1 is a perspective view showing a hook hole plug of the present invention mounted on an iron lid, FIG. 2 is a sectional view showing the hook hole plug of the present invention mounted on an iron lid, and FIG. 3 is an iron cover. FIG. 5 is a perspective view of a weight to be attached, FIG. 4 is a perspective view showing a mounting bracket for attaching the closing plate to the back surface of the hook hole, and FIG.
Is a perspective view showing a fixing metal fitting for fixing the mounting metal fitting, which is provided on the back surface of the iron lid, and FIG.
FIG. 7 is a sectional view showing a hook hole plug of the present invention, FIG. 7 is a sectional view showing a state in which a hand hook inserted in the hook hole plug of the present invention is pulled up, and FIG. 8 is a hand inserted in the hook hole plug of the present invention. It is a sectional view showing the state where the lock of the iron lid was released by the hook.

In FIGS. 1 to 8, reference numeral 4 is a closing plate made of an elastic material such as rubber for closing the hook hole 3 formed in the iron lid 1. As shown in FIGS. 1 and 4, slits 5 are formed in the closing plate 4 in a cross shape. Since the closing plate 4 remains closed due to its elasticity except when the iron lid 1 is opened and closed, rainwater and dust are unlikely to enter the manhole. Reference numeral 6 is a mounting member for mounting the closing plate 4 on the back surface of the hook hole 3. As shown in FIG. 4, the mounting bracket 6 has an opening 8 into which the hook 7 is inserted.
It is made of a plate material having bent pieces 10 having bolt holes 9 formed on both sides thereof, and the closing plate 4 is attached to the upper surface of the opening 8.

Reference numeral 11 denotes a fixing metal fitting for inserting the mounting metal fitting 6 into the groove portion 21 of the iron lid and fixing it with the bolts 12, as shown in FIG. 5, the iron lid having the hook hole 3 formed therein. It is provided on the back surface of 1. The fixing member 7 is formed with a locking portion 16 for suspending the bolt hole 13 and the weight 14 of the bolt 12. The weight 14 has a shape as shown in FIG. 3, and has a shaft portion 15 protruding from both sides thereof.
Is rotatably inserted into the locking portion 16 of the fixing bracket 11, and the hook 18 formed on the side of the receiving frame 17 of the weight 14 into which the iron lid 1 is fitted is attached to the projection 19 formed inside the receiving frame 17. Engage. The tip of the hook 7 is formed in a T-shape by forming the protruding pieces 20 on both sides of the tip, and the width of the tip is longer than the width of the hook hole 3. Therefore, the iron lid 1 can be pulled up by hooking the projecting piece 20 on the hook hole 3.

In order to attach the hook hole plug of the present invention to the iron lid 1, as shown in FIG.
Is attached with an adhesive or the like. Then, in this manner, the mounting bracket 6 to which the closing plate 4 is attached is attached to the bolt 12
It is fixed to the fixing bracket 11 by. As a result, the hook hole 3 is closed by the closing plate 4.

When the iron lid 1 is opened, as shown in FIG. 6, the tip of the hand hook 7 is inserted into the hook hole 3. At this time,
Since the closing plate 4 is made of an elastic material such as rubber and the slit 5 is formed, the tip of the hook 7 is inserted into the hook hole 3 without any resistance, and the weight 1
4 is guided to the intersection of the slits 5, which is the optimum position for rotating 4. Next, as shown in FIG.
Rotate it by 0 ° and pull it up in the direction of arrow A in FIG. As a result, the protrusion 20 of the hook 7 hits the upper end of the weight 14, and the weight 14 rotates in the direction of arrow B in the figure. Further pulling up the hook 7 will cause
The hook 18 of the weight 14 is completely disengaged from the protrusion 19 of the receiving frame 17, and the locking of the iron lid 1 is released. During this time, the handclaw 7
Moves along the longitudinal direction of the hook hole 3, but this movement can be performed without trouble because the slit 5 is formed in the closing plate 4. In this state, the iron lid 1 can be opened by further pulling up the hook 7.

[0017]

As described above, the hook hole plug of the present invention has the following useful effects. The closure plate is always attached to the iron lid, so there is no risk of loss. Since the closing plate is not exposed from the surface of the iron lid, there is no risk of damage by a car or the like. Since the closing plate is made of rubber or the like having high elasticity, even if a slit for inserting a hook is formed, it is possible to minimize the intrusion of rainwater, dust and the like into the manhole.

[Brief description of drawings]

FIG. 1 is a perspective view showing a hook hole plug of the present invention mounted on an iron lid.

FIG. 2 is a cross-sectional view showing a hook hole plug of the present invention mounted on an iron lid.

FIG. 3 is a perspective view of a weight attached to an iron lid.

FIG. 4 is a perspective view showing a mounting member for mounting the closing plate on the back surface of the hook hole and the closing plate.

FIG. 5 is a perspective view showing a fixture provided on the back surface of the iron lid for fixing the fixture.

FIG. 6 is a cross-sectional view showing a hook hole plug of the present invention into which a hand hook is inserted.

FIG. 7 is a cross-sectional view showing a state in which a hand hook inserted in the hook hole plug of the present invention is pulled up.

FIG. 8 is a cross-sectional view showing a state where the lock of the iron lid is released by the hand hook inserted into the hook hole plug of the present invention.

FIG. 9 is a sectional view of an iron cover showing a conventional technique.

[Explanation of symbols]

 1: Iron lid, 2: Rubber stopper, 3: Hook hole, 4: Closing plate, 5: Slit, 6: Mounting bracket, 7: Hand hook, 8: Opening, 9: Bolt hole, 10: Bent piece, 11 : Fixing bracket, 12: Bolt, 13: Bolt hole, 14: Weight, 15: Shaft part, 16: Locking part, 17: Receiving frame, 18: Hook, 19: Protrusion, 20: Projection piece, 21: Groove part.

Claims (1)

[Claims] 1. A plug for closing a hook hole formed in an iron lid, comprising: a closing plate made of an elastic material for closing the hook hole; and a fixing plate for fixing the closing plate to the hook hole. A slit is formed in a cross shape on the closing plate to allow insertion of a hand hook into the hook hole, and the fixing bracket is detachably attached to the iron lid. A cap for a hook hole of an iron lid, which is characterized in that