JPH0749095Y2 - Buffer structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a cushioning structure. That is, the present invention relates to a cushioning structure that is used, for example, as a bumper or the like and that absorbs and buffers an impact load applied from the outside to protect an object to be mounted such as a vehicle body.

“Prior art” Conventionally, foamed resin such as rubber and urethane, and other elastic materials have been used as this type of cushioning structure, and its high elasticity and elasticity absorb and cushion shock load to the installation target. It was being appreciated. In general, such an elastic material is enclosed and housed in a case of metal, resin or the like having high rigidity and strength.

"Problems to be solved by the invention" By the way, the following problems have been pointed out in such a conventional buffer structure.

First, the reinforcement by the case has been essential for maintaining the shape of the cushioning structure. That is, the elastic material used is
Although it has high elasticity and elasticity, it has low rigidity and strength. Therefore, as described above, in order to maintain the overall shape, it is necessary to use a case of metal, resin, or the like having high rigidity and strength, and the elastic material is enclosed and reinforced by such a case.

Secondly, since such a case having high rigidity and strength is used, it is difficult to reuse the conventional buffer structure after the impact load is applied. That is, it is difficult for the case to return to its original state once it has been deformed by an impact load, so that the conventional buffer structure cannot be repeatedly used afterwards.

Thirdly, in order to suppress such deformation of the case, there has been a cushioning structure in which an elastic material or an elastic portion is further attached to the outside of the case, but the structure is complicated and there is a problem in manufacturing cost. . In other words, in order to suppress the deformation of the case, there is a case in which an elastic material such as rubber or an elastic portion such as a spring is further attached to the outside of the case so as to reduce the impact load applied thereto. It has been pointed out that such a shock absorbing structure has a complicated structure, increases the number of manufacturing steps, and increases the manufacturing cost.

Fourthly, in the conventional cushioning structure, if it is attempted to further improve the absorption and cushioning properties against an impact load, the elastic material, the case for accommodating the elastic material and the like become large,
There was a problem that the whole became large. For example,
It has been pointed out that when such a cushioning structure is used as a bumper, the aerodynamic characteristics of the vehicle body deteriorate because the size is increased and the height is increased and the thickness is increased.

Such a point has been pointed out in the conventional example.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances to solve the problems of the above-mentioned conventional example, in which a honeycomb core is filled with an elastic material, and a plurality of reinforcing rods are loosely inserted into the honeycomb core to form a surface plate. By maintaining the desired cushioning properties, the shape can be retained by itself and can be used repeatedly, and the structure is simple and the manufacturing cost is low. It is also an object of the present invention to provide a shock absorbing structure which is excellent in size and is miniaturized as a whole.

"Means for Solving the Problem" The technical means of the present invention for achieving this object are as follows.

This cushioning structure has a honeycomb core, the following elastic material, a reinforcing rod, and a surface plate.

First, the elastic material is filled in each cell formed by the cell wall of the honeycomb core.

A plurality of reinforcing bars are loosely inserted through the honeycomb core and the elastic material so as to be slidable in a direction orthogonal to the cell axis of the honeycomb core.

The surface plate is located on the front surface side of the honeycomb core, and the tips of the reinforcing bars are fixed.

The rear end of each reinforcing rod projects from the back surface of the honeycomb core and is loosely inserted into an attachment target.

"Operation" Since the present invention comprises such means, it operates as follows.

This cushioning structure has a honeycomb core filled with an elastic material,
A plurality of reinforcing rods are loosely inserted into these, the tip of each reinforcing rod is fixed to the surface plate, and the rear end of the reinforcing rod is loosely inserted into the attachment target, and thus attached to the attachment target.

Therefore, firstly, the honeycomb core has high rigidity and strength particularly in the cell axis direction, and a plurality of reinforcing rods are arranged in a direction orthogonal to this. As a result, this cushioning structure has high rigidity and strength as a whole, is also prevented from bending, and can retain its own shape, so that a case or the like is unnecessary.

Secondly, when an impact load is applied from the outside, the surface plate and the reinforcing rod are first pressed and displaced toward the attachment target side, and the elastic material and the honeycomb core are compressed and deformed between the surface plate and the attachment target,
As a result, the impact load on the object to be attached is buffered. After that, when the impact load is released, the elastic material expands and restores the elastic material and the honeycomb core to the original state, so that the surface plate and the reinforcing rod also return to their original positions. In this way, the entire structure is easily restored to its original state, so that this buffer structure can be repeatedly used many times afterwards.

Thirdly, the cushioning structure is configured by filling the honeycomb core with the elastic material, loosening and positioning the reinforcing rod,
Its configuration is simple and easy.

Fourthly, as described above, the desired cushioning property is maintained, the shock load from the outside to the mounting target is cushioned, and the cushioning structure can be downsized. That is, as described above, first of all, a case etc. is unnecessary, and the overall size can be reduced by combining the honeycomb core and the reinforcing rod. For example, even if the height is low and the thickness is thin and the width is long and slender, the rigidity and strength are not increased. It is ensured and deflection is prevented.

[Embodiment] The present invention will be described in detail below based on the embodiment shown in the drawings.

First, the configuration and the like will be described.

FIG. 1 is a cross-sectional view showing an embodiment of the present invention. Second
The figure is a perspective view of the main part thereof. FIG. 3 is a perspective view showing an example of the usage state.

The buffer structure 1 is provided with the following Hanicom core 2, elastic material 3, reinforcing rods 4, surface plate 5, and the like.

First, the honeycomb core 2 is composed of a planar assembly of a large number of hollow columnar cells 7 such as regular hexagons formed by the cell walls 6, and a thin plate of aluminum or other metal or resin is used as a material. The honeycomb core 2 is known to have excellent weight ratio strength, light weight, high rigidity and strength, excellent flatness accuracy, easy molding, and excellent cost.

The elastic material 3 is filled in each cell 7 of the honeycomb core 2. As the elastic material 3, foamed resin such as rubber or urethane, or other highly elastic / elastic material is used.

Next, a plurality of reinforcing rods 4 are slidably inserted into the honeycomb core 2 and the elastic material 3 in parallel to each other in a direction orthogonal to the cell axis of the honeycomb core 2. The reinforcing rod 4 prevents the bending of the cell end surface of the honeycomb core 2 and the like. The thickness, number, mutual spacing, etc. of the reinforcing rods 4 can be selected and used in various modes as appropriate regardless of the illustrated example, and the thicker the number of reinforcing rods 4, the narrower the spacing, the higher the overall strength.

Such a reinforcing rod 4 is freely slidable with respect to the cell walls 6 and the like of the honeycomb core 2, that is, is not fixed but is loosely penetrated by the following first method or second method. First, in the first method, holes having a diameter slightly larger than the diameter of the reinforcing rod 4 are linearly provided in advance at predetermined positions of each cell wall 6 and the elastic member 3, and the reinforcing rod 4 is provided in each hole. By penetrating, the reinforcing rod 4 is loosely inserted into each cell wall 6 and the elastic member 3. In the second method, a release material is applied to the reinforcing rods 4 in advance, and then the reinforcing rods 4 are inserted into the respective cell walls 6 and the elastic members 3 at predetermined positions. Will be passed on.

Now tip 4 ₁ of the reinforcing rod 4 is fixed to the surface plate 5 positioned on the front side of the honeycomb core 2. Surface plate 5
Covers the outer exerted the front side, that impact load attachment object 8 such as a vehicle body through a honeycomb core 2, the distal end 4 ₁ of each of the reinforcing rod 4 is fixed to the inside. In the illustrated embodiment,
The outside of the surface plate 5 and both sides of the honeycomb core 2 which are orthogonal to the cell axis are covered with an exterior plate 9 made of an elastic material such as rubber, thereby further improving the overall cushioning property.

Rear 4 ₂ of the other respective reinforcing rod 4 is loosely inserted in the mounting object 8 protrudes from the back of the honeycomb core 2. That is, in the attachment target 8 such as the vehicle body, each opening 10 is formed in a portion facing the back surface of the honeycomb core 2. These apertures 10 are formed in a slightly larger diameter than the reinforcing rod 4 faces located in each of the reinforcing rods 4 are held freely slidably a rear end 4 ₂ of the reinforcing rod 4.

A back plate (not shown) is further provided on the back surface of the honeycomb core 2 in advance, and each reinforcing rod 4 is inserted through such a back plate.
May be loosely inserted into the opening 10 of the attachment target 8. Of course, in this case, holes corresponding to the above-mentioned openings 10 are also formed in the back plate, and the reinforcing bars 4 are loosely inserted.

The above is the description of the configuration and the like.

The operation and the like will be described below.

In this buffer structure 1, a honeycomb core 2 is filled with an elastic material 3 and a plurality of reinforcing rods 4 are loosely inserted into the honeycomb core 2.
Each reinforcing rod 4 is loosely fitted in a direction perpendicular to the cell axis of the honeycomb core 2, the tip 4 ₁ is fixed to the surface plate 5 a rear end
4 ₂ is loosely inserted into the hole 10 of the attachment object 8 such as a vehicle body, having cushioning structure 1 is attached to the attachment object 8.

Therefore, in this buffer structure 1, the following first, second, third,
It becomes like the fourth.

First, the honeycomb core 2 has high rigidity and strength especially in the cell axis direction, and a plurality of reinforcing rods 4 are arranged in a direction orthogonal to this. Therefore, in this cushioning structure 1, the honeycomb core 2 has a high overall rigidity and strength, and the reinforcing rods 4 also prevent the bending of the cell end surface of the honeycomb core 2 and the like. Therefore, the buffer structure 1 can retain its own shape and does not require a case or the like as in the conventional example.
It is directly attached to the attachment target 8 such as the vehicle body.

Secondly, when an impact load is applied from the outside, first, the surface plate 5 and the reinforcing rod 4 are pushed by the exterior plate 9 and slid in the direction orthogonal to the cell axis of the honeycomb core 2 by
It is displaced to the attachment target 8 side on the right side of the drawing. The elastic material 3 and the honeycomb core 2 are compressed and deformed between the surface plate 5 and the immovable object 8 to be mounted, whereby the impact load on the object 8 is absorbed and buffered.

After that, when the impact load is released, the elasticity of the elastic material 3 and the honeycomb core 2 expands and restores to the original state due to its elasticity, whereby the exterior plate 9, the surface plate 5, and the reinforcing rod 4 are restored. Also returns to the original position on the left side of the drawing. Now, in this way, since the whole is easily restored to its original state after the buffer load is applied, this buffer structure can be repeatedly used many times afterwards. That is, unlike the conventional example, once it is deformed, it is not difficult to restore the original state, and it can be reused after the fact.

Thirdly, the cushioning structure 1 is configured by filling the honeycomb core 2 with the elastic material 3, allowing the reinforcing rods 4 to pass through and positioning the surface plate 5 and the attachment object 8. Therefore, the configuration is simple and easy.

Fourthly, as described above, the desired cushioning property is maintained, and the impact load from the outside to the attachment target 8 is absorbed and buffered. Along with this, the buffer structure 1 can be downsized. That is, as described above, first, the case etc. are unnecessary, and the combination of the honeycomb core 2 and the reinforcing rod 4
The whole can be downsized while maintaining the buffer property. Therefore, when it is used as a bumper, for example, the rigidity and strength are secured and the bending is prevented even if the cell is formed with a small height in the axial direction of the cell, a small thickness, and a laterally slender size.

The above is the description of the operation and the like.

[Advantage of the Invention] As described above, the cushioning structure according to the present invention fills the honeycomb core with the elastic material, and allows a plurality of reinforcing rods to freely penetrate through the honeycomb core, so that the surface plate and the object to be mounted are provided with a predetermined shape. By positioning it, the following effects are exhibited.

First, the shape can be maintained by itself. That is, the rigidity and strength of itself is high and the shape is maintained, so that the case does not need to be reinforced.

Secondly, repeated use is also possible. That is, once deformed by the impact load, the original state can be easily restored after the fact, so that it can be reused many times.

Thirdly, the structure is simple. That is, the honeycomb core is configured by filling the elastic material with the elastic material, loosening the reinforcing rods, and the like, which does not require manufacturing steps and is excellent in manufacturing cost.

Fourth, the desired cushioning property is maintained, the object to be attached is reliably protected, and the overall size is reduced. That is, it is possible to reduce the size as a whole while providing a desired shock absorbing property against impact load. For example, when it is used as a bumper, it can be reduced in height and laterally elongated, so that the aerodynamic characteristics of the vehicle body can be reduced. Deterioration can be suppressed.

In this way, the problems existing in this type of conventional example are eliminated, and the effects of the present invention are remarkable and significant.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a buffer structure according to the present invention. FIG. 2 is a perspective view of the main part. FIG. 3 is a perspective view showing an example of the usage state. 1 ... Buffer structure 2 ... Honeycomb core 3 ... Elastic material 4 ... Reinforcing rod 4 ₁ ... Tip 4 ₂ ...... Rear end 5 ...... Surface plate 6 ...... Cell wall 7 ...... Cell 8 ...... Mounting Target 9 ... Exterior plate 10 ... Open hole

Claims (1)

[Scope of utility model registration request] 1. A honeycomb core, an elastic material filled in each cell formed by the cell walls of the honeycomb core, and the honeycomb core and the elastic material in a direction orthogonal to the cell axis of the honeycomb core. A plurality of reinforcing bars slidably slid through, and a surface plate located on the front surface side of the honeycomb core and having the tip of each reinforcing bar fixed, and the rear end of each reinforcing bar is A buffer structure protruding from the back surface of the honeycomb core and loosely inserted into an attachment target.