JPH0242746Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an opening tool for easily opening iron covers of roadside ditches, manhole covers, etc. from any direction.

The water that flows through roadside gutters is sometimes used for fire extinguishing purposes, and there are times when it is necessary to open the iron lids in an emergency.

The lid opening tool according to the present invention is portable, and is particularly useful for opening iron lids located in narrow gutters at boundaries or gaps between neighboring houses, or in corners and corners.

It belongs to the field of road management, such as gutter cleaning and water intake from gutter.

[Conventional technology]

Conventionally, the equipment for opening iron covers of gutters and manholes was
Utsuko No. 49-35977 (jacket for manhole cover)
Yajiko No. 54-35574 (manhole cover opening/closing device)
and Utsukai No. 58-153290 (ditch cover crane truck).

These devices are relatively large and are not suitable, for example, when a firefighter takes them to a scene in an emergency and opens only a small number of lids.

[Problem to be solved]

When taking water from iron covers of side ditches or manhole covers running around roads or narrow alleys as fire extinguishing water,
When opening the lid for cleaning, it is often difficult to open the lid because the receiving frame and the iron lid are rusted and stuck together, or gravel is stuck in them.

Therefore, some kind of opening device is required. As mentioned above, devices for opening a large number of lids in succession have been proposed in the past, but they are easy to carry and can be used to open a small number of iron lids in narrow alleys in an emergency. It is not suitable when opening the lid.

There is also a so-called lever, but since the lever is usually set at a fixed position, there is also the problem that the lid cannot be opened in a narrow field.

The objective of the present invention was to develop an opening tool that is lightweight and simple in construction, convenient to carry, and capable of opening iron lids from either direction.

[Means for solving problems]

The present invention is designed to reduce the number of products in order to reduce the weight and simplify the lid opening tool, and is composed of a rod, a ring that slidably fits into the rod, and a hooked chain.

The rod 1 is a metal rod having several small protrusions 2 and large protrusions 3 at appropriate intervals, a handle 4 and a latch ring 5 at the rear end, and a flat tip 6.

The ring that is slidably fitted onto the rod 1 is formed as an eight ring 7 and has a flat hook 8 formed at its lower part.

The upper hole 9 of the eight ring 7 is larger in diameter than the rod 1, and has a diameter that does not allow the large protrusion 3 to pass through, but allows the small protrusion 2 to pass through.

If the rod 1 is pipe-shaped, such as a cylinder, square cylinder, or semi-cylinder, the shape of the upper hole 9 can be selected accordingly.

A chain 13 having one or both of a hook 11 and a key 12 at its end is connected to the lower hole 10 of the eight ring 7.

The hook/key attached to the tip of the chain 13 is one in which the hook 11 and the key 12 are integrally molded as shown in Fig. 2, or one in which the hook 18 and the key 19 are integrally molded on the eight ring 17 as shown in Fig. 3. It can also be configured as

The hooks 11 and 18 are used by being hooked on the gutter iron cover 50, and the keys 12 and 19 are used as keys for the manhole 51 and the like.

The one shown in Fig. 3 can also be used as the eight ring 7 that fits into the rod 1, and by making the shaft 20 longer, it can also be used as a support shaft for a lever.

When a cross-shaped hole 21 is formed in the chain 13, by hooking one of the desired chains to the hook 8, a well-locked structure that does not shift during work can be obtained even if it is short.

[Effect]

The lid opening tool according to the present invention is shown in FIG.
Hang the hooks 11 and 18 on the iron lid 50 as shown in
Alternatively, it is used by aligning the keys 12 and 19 with a keyhole in a manhole 51 or the like and applying force as shown by an arrow.

Even when the iron lid 50 or the like is located in a corner or an alley, the lid can be opened in various directions.

When the chains 13 are to be shortened, the cross-shaped hole 21 of one of the desired chains 13 is fitted into the hook 8, so that the length can be firmly shortened.

It is advisable to hang the hook 11 on the latch ring 5 during storage or transportation.

In addition, two eight rings 7 can be provided on the rod 1, and hooked chains 13 are attached to each of them, and in the case of a relatively lightweight iron lid 50, it can be lifted using both hooks.

Furthermore, if the shaft 20 of the eight ring 17 is made long, the shaft 20 can be used as a pivot as shown in FIG. 4, and can also be used as a lever.

〔Example〕

FIG. 1 is a perspective view showing an embodiment of the lid opener according to the present invention, in which a rod 1 has a small protrusion 2 and a large protrusion 3.
, a handle 4 and a ring 5 are provided at the rear end, and a tip 6
is sharpened, a hook 8 is provided on the eight ring 7, and the upper hole 9 is slidably fitted into the rod 1, and the lower hole 10 is connected to a chain 13 having a cross-shaped hole with a hook 11 attached. It is something.

FIG. 2 shows an embodiment of a part in which a hook 11 connected to a chain 13 is integrally provided with a key 12 for a manhole or the like.

FIG. 3 shows a different embodiment of the eight ring 7, in which the eight ring 17 has a hook 18 and a long shaft 2.
A key 19 provided with a 0 is shown integrally provided.

The eight ring 17 can be used by directly fitting onto the rod 1, or can be used by hanging it over the hook 11.

A device equipped with both a hook and a key that can be used to open the side gutter 50 and manhole 51 has a wide range of uses and is extremely useful for emergencies.

〔effect〕

The lid opener according to the present invention has the structure and function described above, and has the following unique effects.

To provide a gutter iron lid opening tool that is simple in structure, lightweight, and convenient to carry.

Depending on the site conditions, for example, even if there are obstacles on the side or above the iron lid, the lid can be opened from various directions, thereby avoiding unexpected situations where the lid cannot be opened.

Chain length can be easily and safely adjusted to suit on-site conditions.

If an embodiment with a key is used, it can be used not only to open side gutters but also to open manholes and the like.

You can choose between opening the lid by hooking it with a hook on a chain or opening it using a lever.

Since the sliding tool fitted to the rod is an eight ring, the eight ring slides smoothly, is strong and durable, and the chain does not interfere with the sliding of the eight ring.

[Brief explanation of the drawing]

The drawings show an embodiment of the lid opener according to the present invention; FIG. 1 is an overall perspective view, FIG. 2 is a perspective view showing an embodiment of the component parts, and FIG. 3 is an example of an eight ring. The perspective views of the embodiment and FIGS. 4A to 4E are usage state diagrams showing how to use the lid opening tool. A simple explanation of the symbols, 1...rod, 2, 3...
Protrusion, 5...Ring, 7, 17...Eight ring,
8, 11, 18...Hook, 9...Upper hole, 10...Lower hole, 12,19...Key, 13...Chain.

Claims (1)

[Claims for Utility Model Registration] (1) A rod with several protrusions spaced at appropriate intervals, an eight ring with a hook at the bottom, and a hook or key connected to the lower hole of the eight ring. and a chain having one or both of the above, and the upper hole of the eight ring is slidably fitted to the rod. (2) The lid opener according to claim 1, wherein the hook has a flat plate shape and the chain has a cross-shaped hole.