JPH047354Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a structure for improving the theft prevention properties of a wall constituting the main body or door of a safe. In addition, the "wall" in this application is
This concept includes the top plate and bottom plate of the main body of the safe.

(Prior Art) Various ideas have been devised as means for improving the theft prevention performance of safes. As an example, Publication No. 1973-5045 describes the inner and outer plates that make up the walls of safes. Between the face plate, a large number of rectangular plate-shaped blocks made of a cone-resistant material are arranged vertically and horizontally so that each block is parallel to the inner and outer plates. A block layer is formed by protruding hook-shaped feet on both the front and back sides of the block, and connecting the feet of adjacent blocks with reinforcing bars, and a block layer is formed between this block layer and the inner surface plate. Also, a structure is described in which a fireproof material such as concrete is filled between the block layer and the outer surface plate.

(Problem to be solved by the invention) However, in this conventional technology, the outer peripheral surfaces of adjacent blocks are merely in contact with each other, and the adjacent blocks are simply connected via reinforcing bars. Therefore, not only is it vulnerable to attacks caused by hammer blows, but it also has a problem in that its defense performance against drill attacks is not sufficient, since attacks by drills must be defended only by blocks.

The object of the present invention is to solve this problem and provide a safe with significantly improved anti-theft performance.

(Means for Solving the Problem) In order to achieve this object, the wall body in the present invention has an inner surface plate and an outer surface plate arranged in parallel with appropriate distance, and the inner surface plate is arranged between the inner surface plate and the outer surface plate. and a metal substrate arranged substantially parallel to the outer surface plate, and a large number of metal pipes are arranged on the wide surface of the substrate, the axis of each pipe being substantially perpendicular to the wide surface of the substrate and adjacent to each other. The pipes are lined up so that their outer circumferential surfaces are in contact with each other, and the end surfaces of these pipes are fixed to the substrate, and concrete is then placed in the spaces between the inner surface plate and the substrate and between the outer surface plate and the substrate. The structure is filled with high-strength refractory materials such as

(Operations and effects of the invention) With this configuration, a large number of pipes form a honeycomb structure, and the adjacent pipes and each pipe and the board mutually reinforce each other, and the entire pipe assembly and the board are reinforced. The rigidity is significantly strengthened, and the inside of each pipe is filled with a high-strength fireproof material, making each pipe extremely difficult to deform. The inner circumferential surface of the refractory is in contact with the substrate over a wide area, and the adhesion strength of the refractory material to the pipe and the substrate is improved. Together, these three factors can significantly improve the protection function against hammer blows. Become.

Further, since each pipe is filled with a fireproof material such as concrete, it is extremely difficult to melt and cut each pipe and the board with a burner.

Furthermore, to make a hole in the wall with a drill,
In addition to the fact that several pipes must be cut along their axis and holes must be drilled into the substrate, cutting the pipes requires a huge amount of time.
When cutting a pipe with a drill, the tip of the drill becomes partially caught in the flesh of the pipe, making the drill extremely susceptible to breakage.
It also becomes almost impossible to make holes in the wall with a drill.

Therefore, according to the present invention, an attack with a hammer,
Since it can exhibit a high defensive function against both attacks by burners and attacks by drills, it has the effect of significantly improving the theft prevention performance of the safe.

(Example) Next, an example of the present invention will be described based on the drawings (FIGS. 1 to 4).

In the figure, reference numeral 1 indicates a safe in which a door 4 is attached via a hinge 3 to the opening of a main body 2 with an open front surface, so that the door 4 can be opened and closed.
Each peripheral wall constituting the door 4 and the wall body constituting the door 4 are constructed by disposing a core material 5 between an inner surface plate 10 and an outer surface plate 9 made of steel plate or the like, and between the core material 5 and the inner surface plate 10 And between the core material 5 and the outer surface plate 9, fireproof materials 8', 8, 12
It has a three-layer structure filled with.

The core material 5 consists of a substrate 6 of an appropriate thickness (t) made of a difficult-to-cut material such as special steel and arranged approximately parallel to the inner surface plate 10 and the outer surface plate 9, and a large number of metal pieces each having a circular cross section. It consists of two pipes 7, each pipe 7
are lined up on one wide surface of the substrate 6 with their axes substantially perpendicular to the wide surface of the substrate 6 and the outer peripheral surfaces of adjacent pipes 7 are in contact with each other, and the end surface of each pipe 7 is , is fixed to the substrate 6 by welding. In this case, adjacent pipes 7 may be welded together.

A first refractory material 8' filled between the substrate 6 and the inner surface plate 10, a second refractory material 12 filled in the hollow part of each pipe 7 and the gap between adjacent pipes 7, and the tip of each pipe 7 The third refractory material 8 filled between the surface and the outer surface plate 9 is made of reinforced concrete, and the second refractory material 12 and the third refractory material 8 are equipped with a grinding wheel or a grindstone-formed dresser. The corundum lumps 11 having the same composition as the above are buried at an appropriate density to maintain the function of preventing drilling by a drill and the function of absorbing heat and dealing with melting.

In this case, by pouring fresh concrete containing corundum mass 11 into the pipe 7,
After the second refractory material 12 is formed in advance in a state in which it is fixed to the core material 5, the core material 5 is arranged between the inner surface plate 10 and the outer surface plate 9, and in this state, the core material 5 The first refractory material 8' and the third refractory material 8 may be formed by pouring concrete between the inner surface plate 10 and the core material 5 and the outer surface plate 9.

In addition, when embedding the corundum lump 11 in the second refractory material 12, the second refractory material 12 is formed of aluminum (or its alloy) having the same volume and weight ratio as the corundum lump 1, and the corundum lump 11 is buried in the second refractory material 12. The refractory material 12 may be cast into each pipe 7 in advance by pouring molten aluminum containing molten aluminum into each pipe 7.

It goes without saying that the corundum mass 11 may also be buried in the first refractory material 8', or that each of the refractory materials 8', 8, and 12 may be formed only of concrete.

In the above configuration, in order to destroy the safe 1 and take out the items inside, it is necessary to make a hole 13 of a certain size in the wall, as shown by the dashed line in FIG. 4, for example. Generally speaking, cutting by melting with a burner, breaking with a hammer, and perforating with a drill are used as a means of emptying the hole.

Even if the outer plate 9 and the third refractory material 8 are destroyed, it is almost impossible to melt down the core material 5 because each pipe 7 is filled with the refractory material 12. Even if hit hard with a hammer, each pipe 7 has a honeycomb structure that reinforces each other and each pipe 7 and the board 6, and each pipe 7 is filled with refractory material 12, so that each The pipes 7 are in a state that is extremely difficult to deform, and the contact area between each pipe 7, the second refractory material 12, and the substrate 6 is large, and the second refractory material 12 is firmly fixed to the pipe 7. As a result of these three factors working together, the rigidity of the core material 5 is significantly strengthened, so that it exhibits a high defensive function even against hammer attacks.

Furthermore, in order to make a hole 13 of a certain size by drilling with a drill, it is necessary to cut the flesh of each pipe 7 located at the periphery of the hole 13 along its axial direction, and then drill the hole in the substrate 6. However, not only does it take a lot of time to cut each pipe 7 in its axial direction, but the tip of the drill becomes partially caught on the pipe 7, making the drill extremely likely to break. Therefore, the defense function against drill attacks is also greatly improved.

In the above embodiment, the pipe 7 is formed to have a circular cross section, but the pipe 7 may be formed to have a rectangular cross section as shown in FIG. 5, or may be formed to have a hexagonal cross section. Needless to say, it's a good thing.

In the embodiment shown in FIG. 5, which uses pipes with a rectangular cross section, the pipes 7 are arranged vertically and horizontally, but the adjacent rows a1, a2, . . . Adjacent columns b1,b
2,... by vertically shifting each pipe 7.
The pipes 7 may be arranged irregularly, or pipes 7 having a plurality of different diameters may be used.

FIG. 6 shows another invention similar to the present invention, in which each pipe 7 is arranged so that its axis is inclined with respect to the wide surface of the substrate 6.

Moreover, FIG. 7 shows the structure of a wall body according to another invention using the above-mentioned core material 5, in which a cross-sectional corrugated shape is formed on a wide surface of the substrate 6 to which each pipe 7 is not fixed. An expanded metal (reticular metal plate) 14 is provided. This expanded metal 14 can reinforce the heat insulating layer 8 and strengthen its impact resistance, and since its surface is inclined with respect to the wide surface of the substrate 6, it does not allow the tip of a drill to slide. As a result, the defense function against drills can be further improved. In this case, the expanded metal 14 may be provided at the tip end surface of each pipe 7.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view of the core material, FIG. 2 is a perspective view of the safe, FIG. - A sectional view, FIG. 5 is a perspective view showing a core material according to another embodiment, and FIGS. 6 and 7 are views showing other devices related to the present invention. 1...Safe, 5...Core material, 6...Substrate, 7...
Pipe, 8, 8', 12... Fireproof material, 9... Outer plate, 10... Inner plate.

Claims (1)

[Scope of utility model registration request] A wall that constitutes the main body or door of a safe, and this wall has an inner plate and an outer plate arranged in parallel with appropriate distance, and an inner plate and an outer plate between the inner plate and the outer plate. A large number of metal pipes are arranged on the wide surface of the substrate, and the axis of each pipe is substantially orthogonal to the wide surface of the substrate, and the axis of the adjacent pipes is arranged substantially parallel to the wide surface of the substrate. The end surfaces of these pipes are arranged so that their outer circumferential surfaces are in contact with each other, and the end surfaces of these pipes are fixed to the substrate, and the spaces between the inner surface plate and the substrate and the outer surface plate and the substrate are filled with strong concrete or the like. A wall structure in a safe characterized by being filled with a highly refractory material.