JP2760741B2 - Shock absorber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing material which is attached to a structure such as a building and protects the structure from an impact load such as an impact or explosion.

[0002]

2. Description of the Related Art For example, as shown in FIG. 4, in order to protect a structure (protected object) 1 such as a building from an impact load such as a falling rock or an impact load such as an explosion, an impact is applied to the peripheral surface of the structure 1. In the case where the absorbing material 2 is attached, conventionally, as the impact absorbing material 2, an elastic material 3 made of sponge, styrene foam, or the like is used as shown in FIG. 5, or as shown in FIG. , 4b use the honeycomb structure 4 in which the honeycomb structure material 4c is sandwiched.

[0003]

With the above-described shock absorbing material 2 such as the elastic material 3 and the honeycomb structure 4, the duration of the shock load P applied thereto is long, and when no shock is instantaneously applied, elastic deformation occurs. Therefore, as shown in FIG. 7, when the duration of the impact load P is short and an instantaneous impact is applied, the elastic material 3 and the honeycomb structure 4 are elastically deformed. Before the operation, the impact load P may directly act on the structure 1 and damage the structure 1.

[0004] In view of the above problems, an object of the present invention is to provide an impact absorbing material that can reliably absorb not only an impact load having a long duration but also an impact load having a short duration.

[0005]

In order to achieve the above object, the present invention provides a back plate attached to an object to be protected, and a front plate arranged parallel to the back plate at a predetermined distance from the back plate. And between the front and back plates, from the back plate side to the front plate side, a honeycomb structure material, an intermediate plate, a net-like body, and a large number are arranged at a predetermined interval, and the front end thereof A conical body toward the net is sequentially interposed, and a gap between each of the conical bodies between the top plate and the intermediate plate is filled with an elastic material.

[0006]

In the above construction, when the shock absorbing material attached to the structure receives a shock, the front plate is first pressed and deformed toward the back plate side, and the tips of the cones push the meshes of the net-like body while expanding. , Thereby absorbing momentary impact energy and absorbing short-duration impact loads. Subsequently, while the elastic member is elastically deformed, the honeycomb structural member buckles, and further, the tip of the conical body hits the back plate and buckles, whereby a long-lasting impact load can be absorbed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a shock absorbing material 2 according to an embodiment of the present invention is attached to a structure (protected object) 1 (see FIG. 4). As shown in the figure, the back plate 6 is attached to the structure 1 and the front plate 7 is disposed in parallel with the back plate 6 at a predetermined interval facing the back plate 6. From the back plate 6 side to the front plate 7 side, the honeycomb structural member 8, the intermediate plate 9, and the mesh body 1
0 and a large number of cones 11 are arranged at predetermined intervals, and are sequentially interposed with cones 11 having their tips facing the net 10, and each cone between the front plate 7 and the intermediate plate 9 is provided. An elastic material 12 is filled in a space between the bodies 11.

The back plate 6, the front plate 7, the honeycomb structure member 8, and the intermediate plate 9 are formed of paper, a synthetic resin material, or a thin metal plate, and the back plate 6, the honeycomb structure member 8, and the intermediate plate 9 are integrally formed. Glued. The reticulated body 10 is made of a high-strength fiber cloth, for example, carbon fiber, aramid fiber or non-woven fabric, and is bonded to the intermediate plate 9 to form an extremely strong shock absorbing plate with the intermediate plate 9. The mesh is set smaller than the diameter of the cone 11. The conical body 11 is formed in a hollow shape by paper or a synthetic resin material, and its base end surface is adhered to the front plate 7, and the mesh of the intermediate plate 9 is expanded at the tip end by expanding the mesh of the intermediate plate 9. In order to surely break through, a conical hard cap 11a made of metal or hard synthetic resin is attached. The conical body 11 may be a polygonal pyramid such as a triangular pyramid or a quadrangular pyramid in addition to the conical body shown in the figure. Elastic material 1
Numeral 2 is made of a foamed synthetic resin such as sponge or styrofoam, and positions the cone 11 and integrally connects the front plate 7 with the intermediate plate 9 and the net 10.

In the above structure, as shown in FIG. 1 (a), when the shock absorbing material 2 attached to the structure 1 receives an impact, first, as shown in FIG. 6, the cap 11a of each conical body 11 breaks through the intermediate plate 9 while pushing and expanding the mesh of the mesh body 10, thereby instantaneously consuming the impact energy, thereby shortening the duration of the impact. The load can be absorbed (a portion indicated by a solid line in FIG. 3). Subsequently, as shown in FIG. 3C, the elastic member 12 is elastically deformed, and the honeycomb structural member 8 buckles. Further, as shown in FIG. Buckling against the plate 6,
Long-lasting impact loads can be absorbed (Fig. 3
Part of the solid line). The broken line in FIG.
The figure shows the case where was not attached.

Since the shock absorbing material 2 is lightweight and durable and can be elastically deformed, and can be easily cut into a desired shape, it can be easily attached to a flat or curved surface such as a panel or a beam. Can be.

In the above embodiment, as shown in FIG. 4, the shock absorbing material 2 is attached to the peripheral surface of the structure 1. In addition to this, for example, an impact load P such as a blast or underwater impact acts. It can be used as a protective material when it is attached to a simple facility or Rockshed, or when it is dropped and transported.

[0012]

According to the present invention, when the shock absorbing material attached to the object to be protected receives an impact, first, the tips of the cones push out the mesh of the mesh to break through the intermediate plate, thereby sustaining. The shock load of short duration can be reliably absorbed, and subsequently, the elastic material is elastically deformed and the tip of the honeycomb structure and the cone are buckled. Since it can be absorbed, the object to be protected can be reliably protected from an impact load such as an impact or an explosion.

[Brief description of the drawings]

1 (a) to 1 (d) are longitudinal sectional views showing a shock absorbing action when a shock is applied in a state where a shock absorbing material according to one embodiment of the present invention is attached to a structure.

FIG. 2 is an exploded perspective view of the shock absorbing material.

FIG. 3 is a graph showing a shock absorbing effect of the shock absorbing material.

FIG. 4 is a perspective view showing a state where the shock absorbing material is attached to a peripheral surface of a structure.

FIG. 5 is a perspective view showing an example of a conventional shock absorbing material.

FIG. 6 is a perspective view showing another example of a conventional shock absorbing material.

FIG. 7 is a graph showing an example of an impact load.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Structure (protected object) 2 Shock absorbing material 6 Back plate 7 Front plate 8 Honeycomb structural material 9 Intermediate plate 10 Reticulated body 11 Conical body 12 Elastic material

Continuation of the front page (56) References JP-A-56-107159 (JP, A) JP-A-4-254639 (JP, A) JP-A-2-254295 (JP, A) (58) Fields investigated (Int .Cl. ⁶ , DB name) E04H 9/14 F16F 7/12 F41H 5/04

Claims (1)

(57) [Claims] 1. A back plate attached to an object to be protected, and a front plate arranged in parallel with a predetermined interval facing the back plate, between the front and back plates from the back plate side. Toward the front plate side, a honeycomb structure material, an intermediate plate, a mesh, and a large number are arranged at a predetermined interval, and a cone having the tip directed to the mesh is sequentially interposed, An elastic material is filled in a space between the cones between the top plate and the intermediate plate with an elastic material.