JPH0522190Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a cushioning mat that absorbs shocks applied to the human body using a polymer of a plurality of cushion sheet materials.

<Prior Art> Conventional cushioning mats include those using air cushions and those using cushion sheet materials.

Among these cushioning mats, those that belong to the former type require a large number of hands, or require a lot of work inside the mat, as disclosed in Japanese Patent Publication No. 46-12800 and Japanese Patent Application Laid-open No. 51-66199. Since it requires a means to blow air into the air, there are problems that the structure is complicated and expensive, and that it is difficult to use it easily.

On the other hand, the latter type of cushion sheet material can be constructed by stacking a single cushion sheet material or multiple cushion sheet materials, so the structure is simple and inexpensive, and does not require human labor during use. There is an advantage to this.

In the cushioning mat using this cushion material,
When using a single cushion sheet material, the elastic properties of the cushion material are the same in each part, so
If a cushion sheet material with low elasticity is not used to increase the cushioning effect on the human body,
It is necessary to increase the thickness of the cushion sheet material, and in this case there are restrictions on carrying and where it can be used. On the other hand, in a cushioning mat made by stacking multiple layers of cushioning material, the cushioning properties of the entire cushioning mat can be changed by changing the elastic properties of each layer. It has the advantage that it can be designed to be smaller than the cushion sheet material of the lower layer and to reduce the impact resilience at the initial stage of buffering.

<Problem to be solved by the invention> In such a stacked cushioning mat, the plurality of cushion sheets are configured to absorb shock through their own elastic deformation. In addition to the problem that the application is concentrated in the area where it is applied and is difficult to diffuse, since the buffering effect is performed by elastic deformation action, it is inevitable that rebound resilience will occur. There are many designs that increase the elasticity of the cushion sheet material.
There is a problem in that large rebound resilience occurs in the latter stages of the buffering action.

Since this rebound resilience acts as a secondary shock absorber for the human body, there is a problem in that the buffering effect is hindered by this, and accidents such as the human body being thrown off the shock absorber may occur. There is a problem that there is a possibility that this may occur.

<Means for Solving the Problems> In the buffer mat of the present invention, a plurality of buffer layers 1, 6a, 6b are formed of a plurality of polymerized cushion sheet materials.

Among these buffer layers, the buffer layer that receives direct impact is made of a continuous foam cushion sheet material as the fume buffer layer 1, and both the front and back sides of this fume buffer layer 1 are sealed with airtight sealing layers 2, and the side surfaces are A predetermined portion of the section is a ventilation surface 11.

A silicone gel material layer having a penetration degree of about 100 to 200 is formed between at least one of the plurality of buffer layers, and this silicone gel material layer may be used as a sealing layer 2 or an adhesive layer for bonding between the buffer layers. good.

<Function> When the buffer mat of the present invention receives an impact force from the pressure receiving direction, the fume buffer layer in the plurality of buffer layers or the fume buffer layer forming the plurality of buffer layers is deformed by the impact force and the internal air is deformed by the impact force. is discharged from the ventilation surface, and after the impact force has passed, the fume buffer layer restores itself with its own elasticity and sucks outside air into the interior.

Therefore, the shock absorbing action of the shock mat according to the present invention when receiving an external impact is based on the shock absorbing effect due to the elastic deformation of the buffer layer, and the compressed air generated inside the fume buffer layer generated by this elastic deformation, while limiting the amount of outflow. That is, it is obtained by combining it with an air damper effect that discharges air while applying a predetermined resistance.

Furthermore, in the present mat, at least one silicone gel material layer is provided for the buffer layer, so that the shock wave is diffused and transmitted from the upper buffer layer to the lower buffer layer by the silicone gel material layer. At the same time, it is absorbed by the inelastic deformation of the silicone gel material layer without causing impact resilience, and the shock waves generated by the impact resilience generated in the lower buffer layer are also absorbed by the inelastic deformation of the silicone gel material layer.

In other words, silicone gel material with a penetration degree of about 100 to 200 has shock wave transmission characteristics similar to liquids.
This is because shock waves can be dispersed and rapidly transmitted, and since the shock waves are absorbed through overall inelastic deformation, rebound resilience is extremely small.

<Example> The example shown in FIG. 1 is a cushioning mat having a structure in which four open-cell cushioning sheet materials are polymerized to form four stages of blower cushioning layers 1, 1, . . . Airtight sealing layers 2, 2 are interposed between each fumarole buffer layer 1, 1, and an airtight sealing layer 3 covering the upper surface of the uppermost fumarole buffer layer and a lowermost layer are provided on both upper and lower surfaces of the buffer mat. An airtight sealing layer 4 is formed to cover the lower surface of the fumarole buffer layer, and as a result, the fumarole buffer layers 1, 1 are developed perpendicularly to the pressure receiving direction a, and the front and back surfaces parallel to each other are covered with a sealing layer 2. , 3, and 4 are hermetically sealed.

The side surface of the fume buffer layer 1 is formed as a ventilation surface 11, and in the embodiment, it is formed by exposing a cushion sheet material.

Therefore, in this embodiment, when an impact force is applied from the pressure receiving direction a, each of the fume buffer layers 1, 1 is compressed while being elastically deformed by this impact force, and the internal compression generated by this compression is Air will be exhausted from the entire surface of the ventilation surface 11 through the ventilation holes formed by continuous foaming, and since the amount of outflow of the ejected air at this time is regulated per unit time, there will be resistance to prevent the outflow. It is discharged while receiving

A silicone gel material layer with a penetration depth of about 100 to 200 is formed at least one between the fumarole buffer layers 1, 1, and in the embodiment, the seal layer 2 is made of a silicone gel material.

Since this silicone gel material has good airtightness and good adhesive effect, the upper and lower buffer layers 1, 1 are bonded to each other and simultaneously sealed airtight by the silicone gel material layer.

The silicone gel material has shock absorbing properties due to its inelastic deformation and shock wave diffusion and transmission properties similar to that of a liquid, so it rapidly disperses shock waves and deforms over a wide range, substantially reducing rebound resilience. Can absorb shock waves without causing any damage.

As such silicone gel material,
A so-called composite silicone gel material in which a large number of microscopic hollow particles are mixed into a silicone gel material is suitable.

The penetration shown here is JIS K 2530-1976
− (50g load).

This standard concerns the petroleum asphalt penetration test method, and for samples with a penetration of 350 or less, the test is carried out with a load of 100g, but in the case of gel-like substances, the test is carried out with a load of 50g. ing.

2 and 3 show a buffer mat having a structure in which a suitable number of vent holes 11a of a predetermined diameter are provided on the ventilation surface 11. In this embodiment, compressed air generated in the fumarole buffer layer 1 flows out. Because the amount is small and limited,
A preset strong resistance can be applied to the discharge of internal air.

In this embodiment, the buffer mat is entirely covered with an outer covering layer 5, for example, an airtight sealing material made of urethane film.
The ventilation hole 11a is transparently provided in a part of the housing.

Therefore, in such a buffer mat, the airtight seal layers 3 and 4 on the upper and lower surfaces provided in the embodiment shown in FIG. 1 may be omitted.

Furthermore, as shown in FIGS. 2 and 3, it is preferable that the mat of the present invention is provided with a base layer 6 at the bottom.
In this case, the base layer 6 is a non-blowing buffer layer 6 made of a plurality of closed foam cushion sheet materials.
If a and 6b are used, it is possible to obtain the elastic force that is the basis of the buffering effect, and there is an advantage that the bottoming out phenomenon can be prevented when the buffering force is large.

The air-tight sealing layers 2, 3, 4, and 5 may be formed by laminating a soft urethane film onto each cushion sheet material, or alternatively, the fume buffer layer and the non-fume buffer layer may be alternately polymerized and bonded. The non-blow-off buffer layer may be used as a sealing layer, or may be formed by applying an airtight adhesive or paint. The base layer 6 is formed by a plurality of non-fumes buffer layers 6a, 6.
b, etc., by interposing a continuous foam type thin cushion sheet material or a layer of silicone gel material between these non-bubble cushioning layers 6a and 6b, it is possible to create an independent foam type shoe that performs the cushioning action only by elastic deformation. Since the intermediate buffer layer 6c with suppressed impact resilience is interposed between the shock absorbing sheets, there is an advantage that the buffering action of the base layer 6 can be made even better.

The exhaust characteristics of the ventilation surface 11, that is, the resistance value to exhaust gas, can be set by limiting the amount of air outflow per unit time. Although it can be determined depending on the number of installations, etc., for example, an exhaust valve 7 as shown in FIG. 4 can also be used.

The exhaust valve 7 is provided in a vent hole 11a that is provided through the outer cover layer 5 that covers the vent surface 11, and is connected to a cylindrical body 71 that is attached to the vent hole 11a so as to communicate with the fumarole buffer layer 1. , and a rotary cylinder 72 with a bottom attached to the cylinder body 71.

The cylinder body 71 and the rotary cylinder 72 are formed with through holes 71a and 72a, respectively, so that they can communicate with each other. Therefore, if this exhaust valve 7 is used, the rotary cylinder 72 can be rotated in the circumferential direction. By doing so, the communicating area of the two cylinders of through holes 71a and 72a can be increased or decreased, thereby making it possible to adjust the resistance to the ejected air.

In the above embodiment, a plurality of fumarole buffer layers 1 are provided, but the fumarole buffer layer 1 only needs to constitute at least one buffer layer, which is the uppermost layer or the outermost layer that directly receives external impact. A non-aerated buffer layer may be polymerized below or inside the buffer layer 1.

<Effects of the invention> Since the buffer mat of the present invention is as described above, when receiving external shock, the fumarole buffer layer 1 deforms and absorbs the impact with its elasticity, while at the same time the air within the fumarole buffer layer 1 deforms and absorbs the impact with its elasticity. Since the gas is discharged at a limited flow rate, the rebound resilience of the fume buffer layer 1 is gradually reduced.

Furthermore, since the cushioning mat of the present invention has a silicone gel material layer with a penetration of about 100 to 200 interposed between the cushioning layers, shock waves are dispersed and transmitted by this silicone gel material layer and are absorbed by the inelastic deformation of the silicone gel material layer. As a result, the shock waves within the shock mat are greatly attenuated and the resilience of the entire cushioning mat can be reduced. As a result, secondary shock waves due to resilience can be prevented and the cushioning effect is improved, which has the effect of reducing the number of cushion sheet materials.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of the cushioning mat of the present invention, Figure 2 is a front view showing another embodiment of the above mat, Figure 3 is a sectional view of the main part along the line shown in Figure 2, Figure 4 shows one of the valves used on the ventilation surface of the proposed mat.
FIG. 3 is an exploded plan view showing an example. In the figure, 1 indicates a fumarole buffer layer, 11 indicates a ventilation surface, and 2 indicates a seal layer.

Claims (1)

[Scope of utility model registration request] A plurality of cushion sheet materials are polymerized to form a plurality of buffer layers that overlap in the pressure receiving direction, and among the buffer layers, at least one that directly receives an external impact is formed.
The fume buffer layer is made of open foam cushion sheet material, and the fume buffer layer is perpendicular to the pressure receiving direction and parallel to each other, and is sealed with an airtight sealing layer. A part or all of the side surfaces other than both surfaces are made into ventilation surfaces, and at least one of the above buffer layers has a penetration depth of 100 to 100.
A buffer mat made up of approximately 200 layers of silicone gel material.