JP2008239170A - Vibration-proof mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration-proof mechanism that eliminates the need for packing for transport, exhibits a vibration-proof function by means of a conveying base used for placing items on it, and safely and securely protects the items. <P>SOLUTION: The vibration-proof mechanism 1 is composed by fixing a plurality of first shock absorbing materials 5 between a substrate 2 and an intermediate plate 4 disposed above and parallel to the substrate, and by fixing a plurality of second shock absorbing materials 6 between the intermediate plate and an item placing plate 3 disposed above and parallel to the intermediate plate. The first and second shock absorbing materials 5 and 6 are freely swung horizontally and freely stretched or compressed vertically. The first shock absorbing materials absorb vibration and shock transmitted between the substrate and intermediate plate, and the second shock absorbing materials absorb vibration and shock transmitted between the intermediate plate and item placing plate. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an anti-vibration mechanism used for a transportation base such as a pallet or a tray used for transporting an article that requires safe transportation such as precision equipment, and more particularly to vibration applied to the article during transportation. -It is related with the vibration proof mechanism which can protect articles | goods safely and reliably by reducing acceleration, such as an impact, as much as possible.

Conventionally, when transporting precision equipment in a vehicle, etc., the equipment can be packaged by combining a cushioning material such as foam and a cardboard box, placed on a pallet, and then transported on a vehicle. Has been done.
JP-A-6-115550

  However, with the conventional method, packing materials such as cushioning materials and cardboard boxes are prepared on the sending side, and much labor and cost are required for packing the goods. Packing takes a lot of labor, and the packaging material that has been unpacked and loosened has been wastefully discarded without being reused.

  Therefore, in order to solve these problems, the present invention eliminates the need for packaging during transportation, and can prevent the article from being safely and reliably protected by exhibiting a vibration isolating function on the conveyance table itself on which the article is placed. An object is to provide a vibration mechanism.

  In order to achieve the above object, the vibration isolating mechanism of the present invention includes one or a plurality of intermediate plates interposed between a substrate and an article placement plate arranged in parallel above the substrate, and each of the plates A plurality of cushioning materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the bodies to absorb vibrations / impacts transmitted between the plate bodies.

  Alternatively, a plurality of first buffer members that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the substrate and the intermediate plate disposed in parallel above the substrate, and the intermediate plate And a plurality of second shock-absorbing materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the substrate and the intermediate plate. The first shock absorbing material absorbs vibrations and shocks transmitted between the plates, and the second shock absorbing material absorbs vibrations and shocks transmitted between the intermediate plate and the article placement plate.

  Further, the first buffer material is fixed between the upper surface of the substrate and the lower surface of the intermediate plate, and the second buffer material is fixed between the upper surface of the intermediate plate and the lower surface of the article placement plate.

  The plurality of first cushioning materials are made of the same material and have the same shape so that the substrate and the intermediate plate move in parallel when the first cushioning material absorbs vibration / impact and swings / extends / contracts. The second buffer material is made of the same material and has the same shape so that the intermediate plate and the article mounting plate move in parallel when the second buffer material swings and expands and contracts by absorbing vibration and shock. It is characterized by.

  Further, each of the first cushioning material and the second cushioning material comprises three or more.

  The first shock absorbing material and the second shock absorbing material absorb vibrations and impacts applied in the front-rear direction, the left-right direction, and the vertical direction, respectively.

  Further, the spring constant of the first buffer material and the spring constant of the second buffer material are made different.

  Further, the spring constant of the second buffer material is made smaller than the spring constant of the first buffer material.

  The first buffer material and the second buffer material are made of a thermoplastic elastomer.

  According to the vibration isolating mechanism of the present invention, one or a plurality of intermediate plates are interposed between the substrate and the article placement plate arranged in parallel above the substrate, and the horizontal direction between the plate bodies. By interposing a plurality of cushioning materials that are swingable and extendable in the vertical direction, the cushioning material between the plates does not resonate with vibrations / impacts and does not collapse or twist significantly. The vibration and impact transmitted to the mounting plate are absorbed in order, and the article on the article mounting plate can be protected safely and reliably.

  In addition, a plurality of first cushioning materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the substrate and the intermediate plate disposed in parallel above the substrate, and the intermediate plate And a plurality of second shock-absorbing materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the substrate and the intermediate plate. The first shock absorbing material absorbs vibration and shock transmitted between the first shock absorbing material and the second shock absorbing material by absorbing vibration and shock transmitted between the intermediate plate and the article mounting plate. The space and time to which vibration / impact is applied by two layers of two cushioning materials can be absorbed in two stages, and the height of the cushioning material necessary to absorb the vibration / shock can be two. By making it a layer, the height of one cushioning material can be lowered, which makes the cushioning material vibrate / impact It can be absorbed reliably vibration and shock between the substrate and the article carrying plate without or or or twisting fall down great resonates. Moreover, the size of the 1st shock absorbing material and the 2nd shock absorbing material which support a board | substrate, an intermediate | middle board, and an article mounting board in parallel is set freely by making the 1st shock absorbing material and the 2nd shock absorbing material into plurality, respectively. This makes it possible to easily set the cushioning performance of the cushioning material, whereby the article on the article placing plate can be safely and reliably protected.

  The plurality of first cushioning materials are made of the same material and have the same shape so that the substrate and the intermediate plate move in parallel when the first cushioning material absorbs vibration / impact and swings / extends / contracts. The second buffer material is made of the same material and has the same shape so that the intermediate plate and the article mounting plate move in parallel when the second buffer material swings and expands and contracts by absorbing vibration and shock. As a result, each of the first cushioning material and the second cushioning material swings uniformly in the horizontal direction and expands and contracts uniformly in the vertical direction, so that the substrate, the intermediate plate, and the article placement plate may fall down due to vibration / impact. Without twisting, it can move in the horizontal and vertical directions to absorb vibrations and shocks.

  In addition, since the first cushioning material and the second cushioning material are each composed of three or more, the intermediate plate can be supported in parallel even if the three or more cushioning materials disposed on the substrate are small. In addition, it is possible to support the article mounting plate in a parallel manner even if three or more cushioning materials disposed on the intermediate plate are small, and thereby the substrate, the intermediate plate, and the article mounting plate are parallel to each other. It can be moved in parallel and moved in parallel in the horizontal and vertical directions without falling down or twisting against external vibrations and shocks, and reliably absorbs vibrations and shocks. be able to.

  Further, by making the spring constant of the first buffer material different from the spring constant of the second buffer material, the frequency band of vibration absorbed by the first buffer material and the second buffer material is shifted. It becomes possible to absorb vibration.

  Further, by making the spring constant of the second buffer material smaller than the spring constant of the first buffer material, the first buffer material located below is more intermediate than the second buffer material while vibrating at a higher frequency. The second cushioning material has a hardness that supports the load of the plate and the second cushioning material, and the second cushioning material can be made softer and softer than the first cushioning material, thereby absorbing low-frequency vibrations. .

  Moreover, the 1st shock absorbing material and the 2nd shock absorbing material consist of thermoplastic elastomers, and can exhibit the outstanding vibration and shock absorption performance in a wider frequency band compared with vibration-proof rubber.

1 and 2 show an anti-vibration mechanism 1 according to the present invention. The anti-vibration mechanism 1 includes a substrate 2 serving as a base and an article placement plate on which an article is placed in parallel with the substrate 2. 3 and the three plates of the intermediate plate 4 interposed in parallel between the substrate 2 and the article placement plate 3, and the substrate 2 interposed between the upper surface of the substrate 2 and the lower surface of the intermediate plate 4 in a fixed manner. Four first cushioning materials 5 that absorb vibrations and shocks transmitted between the intermediate plate 4 and the intermediate plate 4 and the article placement plate 3 are fixedly interposed between the upper surface of the intermediate plate 4 and the lower surface of the article placement plate 3. It is composed of four second cushioning materials 6 that absorb vibration and impact transmitted between the mounting plates 3. As these board | substrate 2, the article mounting board 3, and the intermediate | middle board 4, what has the rigidity which is lightweight and has little bending is suitable, and a metal frame etc. may be used.
The figure shows an example in which the vibration isolating mechanism 1 having such a configuration is incorporated in a pallet 10 used for transportation. The substrate 2 of the vibration isolation mechanism 1 is fixed to the upper surface of the pallet 10, and the article 11 to be transported is fixed to the upper part of the article mounting plate 3. In addition, at the four corners of the upper surface of the article placing plate 3, regulating members 7 for preventing the positional deviation of the article 11 are attached.

  The first buffer material 5 is made of a soft thermoplastic elastomer that is fixedly disposed at the four corners of the substrate 2 and the intermediate plate 4. Similarly, the second cushioning material 6 is made of a soft thermoplastic elastomer that is fixedly disposed at the four corners of the intermediate plate 4 and the article placement plate 3. More specifically, the first shock absorbing material 5 and the second shock absorbing material 6 use a polyurethane near-gel material elastomer and absorb vibrations in a wide range from a low frequency to a high frequency as compared with a conventional anti-vibration rubber. It has excellent oil resistance, heat resistance, chemical resistance, etc.

  And in this 2nd shock absorbing material 6, when the spring constant is smaller than the 1st shock absorbing material 5, ie, when the 2nd shock absorbing material 6 is made softer than the 1st shock absorbing material 5, the lower layer hard The first buffer material 5 absorbs high frequency vibrations / impacts, and the lower frequency vibrations / impacts that could not be absorbed by this are slightly delayed from the vibration absorption by the first buffer material 5 (with a time difference). (The order of vibration absorption may be reversed, and the first buffer material 5 may absorb vibration after the second buffer material 6 absorbs vibration). Good). Of course, other than that, the spring constants of the first shock absorbing material 5 and the second shock absorbing material 6 may be substantially the same, and vibrations in a predetermined frequency band may be attenuated in two stages. Further, specific spring constants are individually set according to the load supported by the vibration isolation mechanism 1, the expected vibration / impact frequency / magnitude, the amount of vibration attenuation to be reduced, and the like. .

  If the hard first buffer material 5 and the soft second buffer material 6 are arranged in parallel between the substrate 2 and the article mounting plate 3 without the intermediate plate 4 interposed, the hard The above-described two-stage vibration absorbing action is not exhibited only by averaging the spring constants of the first buffer material 5 and the soft second buffer material 6. Further, even when the hard first cushioning material 5 and the soft second cushioning material 6 are arranged vertically in series between the substrate 2 and the article mounting plate 3, the spring constant is averaged and the cushioning material When the height is increased, the amplitude may increase due to resonance with external vibrations / impacts, and the vibration may not be absorbed due to falling or twisting.

  FIG. 3 shows a three-way peak accelerometer when the article is placed on the above-described pallet incorporating the vibration isolating mechanism of the present embodiment, loaded on a truck, and transported on a mountain road for 40 minutes. (A) is a case where a pallet incorporating the vibration isolating mechanism of the present embodiment is used as it is, and (b) is a first cushioning material in the vibration isolating mechanism 1 of the present embodiment. This is the case where a pallet incorporating only 5 is used.

  As is apparent from the graph of FIG. 3, (b) the first shock absorbing material 5 and the second shock absorbing material of the present invention are compared with (b) the vibration-proofing effect of the vibration-proof mechanism of only the first shock-absorbing material 5. It can be seen that the anti-vibration effect of the two-stage anti-vibration mechanism 1 of No. 6 is extremely large and exhibits an excellent anti-vibration effect that hardly gives vibration / impact acceleration to the placed article.

  In the above-described embodiment, the case where the vibration / impact transmitted from the substrate 2 to the article placement plate 3 is absorbed has been described. On the contrary, the vibration / impact transmitted from the article placement plate to the substrate is described. Even in the case of absorbing an impact, the same effect is exhibited. Further, two intermediate plates may be provided, and the buffer material layer may have a three-layer structure or more.

It is a disassembled perspective view of the vibration isolating mechanism of this invention. It is explanatory drawing of the pallet incorporating the vibration isolating mechanism of this invention. It is a graph which shows the effect of the anti-vibration mechanism measured with the three direction peak acceleration recorder, (a) shows the case where the anti-vibration mechanism of the present invention is used, and (b) shows the case where the buffer material is one stage. Yes.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Anti-vibration mechanism 2 Board | substrate 3 Article mounting board 4 Intermediate | middle board 5 1st shock absorbing material 6 2nd shock absorbing material 7 Controlling material 10 Pallet 11 Goods

Claims (9)

  One or a plurality of intermediate plates are interposed between the substrate and the article placement plate arranged in parallel above the substrate, and can swing in the horizontal direction between the plates and extend and contract in the vertical direction. An anti-vibration mechanism characterized by interposing a plurality of free cushioning materials and absorbing vibrations and shocks transmitted between each plate.   A plurality of first cushioning materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the substrate and the intermediate plate disposed in parallel above the substrate, and the intermediate plate and the intermediate plate A plurality of second shock-absorbing materials that are swingable in the horizontal direction and extendable in the vertical direction are interposed between the article placement plates arranged in parallel above the intermediate plate, and the substrate and the intermediate plate. The vibration-proof mechanism is characterized in that the first shock-absorbing material absorbs vibration and shock transmitted between the first and second shock-absorbing materials, and the second shock-absorbing material absorbs vibration and shock transmitted between the intermediate plate and the article mounting plate.   3. The prevention according to claim 2, wherein the first buffer material is fixed between the upper surface of the substrate and the lower surface of the intermediate plate, and the second buffer material is fixed between the upper surface of the intermediate plate and the lower surface of the article mounting plate. Shaking mechanism.   The plurality of first shock absorbers are made of the same material and have the same shape so that the substrate and the intermediate plate move in parallel when the first shock absorber absorbs vibration and shock and swings and expands and contracts. (2) When the cushioning material absorbs vibration / impact and swings / extends, the plurality of second cushioning materials are made of the same material and have the same shape so that the intermediate plate and the article mounting plate move in parallel. The anti-vibration mechanism according to claim 2 or 3.   The anti-vibration mechanism according to any one of claims 2 to 4, wherein each of the first cushioning material and the second cushioning material comprises three or more.   6. The vibration isolating mechanism according to claim 2, wherein the first shock absorbing material and the second shock absorbing material absorb vibrations and impacts applied in the front-rear direction, the left-right direction, and the vertical direction, respectively. .   The vibration isolation mechanism according to any one of claims 2 to 6, wherein the spring constant of the first buffer material and the spring constant of the second buffer material are made different.   The anti-vibration mechanism according to claim 7, wherein the spring constant of the second buffer material is made smaller than the spring constant of the first buffer material.   The vibration isolation mechanism according to any one of claims 2 to 8, wherein the first buffer material and the second buffer material are made of a thermoplastic elastomer.