WO2007074503A1

WO2007074503A1 - Vacuum panel

Info

Publication number: WO2007074503A1
Application number: PCT/JP2005/023759
Authority: WO
Inventors: Yoshihiro Shiotani
Original assignee: Yoshihiro Shiotani
Priority date: 2005-12-26
Filing date: 2005-12-26
Publication date: 2007-07-05

Abstract

[PROBLEMS] Problems are improvement of sound proofing and thermal insulating functions of a panel-like vacuum member using a tension member to hold a space. [MEANS FOR SOLVING PROBLEMS] Since a vacuum portion does not transmit sound, thermal insulating function depends on energy attenuation between front and rear surfaces of a vacuum member. Energy is attenuated by transmissions among an air tight plate member, a tension member and a spacer, and amplitude of the tension member and space holding member. Concretely, energy of vibrations from an air tight plate member (2) on a sound receiving side is attenuated by obtaining resistance between a tension member (14) stretched to cross a leg (11) of a spacer (10) and a contact portion at a projecting portion (3) of an air tight plate member (2) at sound transmitting time and attenuation caused by internal attenuation and amplitude of the tension member (14) on both sides of the spacer (10), and entire vibrations of a space holding member (15). In thermal insulating functions, on the other hand, large thermal transmitting resistance is obtained by providing many contact points between different members in thermal transmitting paths, and making their contact areas and a thermal conducting area of the tension member small. Further, heat radiation is increased by holding a heat reflector between the tension member and the projecting portion.

Description

Technical field

[0001] The present invention relates to a soundproof and heat insulating panel mainly using sound insulation using vacuum.

Background art

[0002] Conventional soundproofing materials used for sound insulation are based on the law of mass of sound, and therefore require a heavy material to be used. On the other hand, a method of using a vacuum as a sound insulating material independent of weight is presented in the following patent document. In this method, in order to form a vacuum layer, a tensile material made of a linear material or a belt-like material is applied between a plurality of convex shapes formed on the inner side of the vacuum body, and the convex shapes are in contact with both sides of the tensile material alternately. To form a space, and the outer periphery is sealed and the inside is evacuated. Compared to the conventional method of pressing the material for forming the vacuum layer of the vacuum panel, the transmission of energy between the front and back of the vacuum body can be reduced, so that the sound insulation and heat insulation performance are improved.

[0003] As for the joining of the outer periphery of the airtight face material, which is a constituent material of the vacuum body, welding or brazing is generally used to ensure the airtightness, but both are airtight for joining at a high temperature. Layers that are susceptible to distortion throughout the face material

Patent Document 1: JP 2001-296872 A

Disclosure of the invention

Problems to be solved by the invention

[0004] However, as a problem, however, as a problem, in terms of performance, the convex portions of the airtight surface material facing each other on both sides of the tensile material are in contact with each other. And § I difficult to get more performance than damping due to vibration of the upholstery. In addition, there is a drawback that the vacuum body is likely to be distorted because the ends of the tensile material are fastened to the airtight surface material and the position of the convex body formed on the airtight surface material is different between the front and back sides.

[0005] In the joining of the outer peripheral portion of the airtight face material, when the hermetic face material is hermetically joined using a metal, welding and brazing are at a high temperature and the thickness of the joint portion is the same as that of other portions. For this reason, the hermetic face material is likely to be deformed by the influence of heat up to the periphery of the joint. Means for solving the problem

[0006] In contrast to the conventional method of using a tensile material, where the convex portions of the airtight surface material are in contact with the front and back of the tensile material, in the present invention, a spacer in which legs are integrated at a predetermined interval with a bonding material. A tension material made of fiber, linear material, band material, mesh material, etc. is arranged on both sides of the one to make a hermetic surface material force. Since the airtight face material is arranged on both sides, the tension material should be in contact with the front and back airtight face material.

[0007] Regarding the prevention of deformation of the hermetic face material in the outer peripheral part joining method, a thin part is provided on the outer peripheral part of the hermetic face material, and in the case of ultrasonic joining, the thin part of the joining member is overlapped and hermetically joined. In the case of brazing, the outer part of the thin part is hermetically joined, thereby reducing the influence of heat on the periphery of the joined part and improving the shape accuracy of the vacuum body. In addition, a small protrusion with a tip that is easily crushed is provided in the frame material portion where the airtight surface material contacts, and the airtight surface material and the frame material are hermetically bonded by pressing.

The invention's effect

Regarding the sound insulation performance, the sound insulation material according to the law of mass requires weight, whereas the sound insulation material using a vacuum is characterized in that a high sound insulation performance can be obtained even if it is not correlated with mass. The reason for this is that the vacuum part does not transmit sound, so in the present invention, the front and back of the vacuum body mainly consists of the transmission between the members of the airtight surface material 'tensile material' spacer, the amplitude of the tensile material, and the amplitude of the spacing material. Sound insulation performance is determined by the attenuation of energy in between.

[0009] Specifically, vibration from the sound-receiving side airtight surface material is transmitted at the contact portion between the tensile material stretched so as to intersect the leg of the spacer and the convex portion of the airtight surface material. Damping force due to internal damping and amplitude of the resistance and tension material itself Obtained on both sides of the S-spacer and transmitted to the diffused sound-side airtight surface material as a result of vibration of the entire spacing member. This small attenuation is the sound insulation performance.

[0010] Therefore, unlike the law of mass, energy can be attenuated regardless of the mass, so in addition to conventional sound insulation points, it has been impossible to slide on aircrafts, automobiles, and other mobile objects. It can also be used on parts that require weight reduction, such as walls and ceilings. In addition, at a low frequency, since the spacing member vibrates independently inside the vacuum body, high performance can be obtained by adding weight. Compared to the case where airtight surface materials alternately opposed to both sides of the tensile material are in contact with each other, the contact portion of one side of the spacer and the internal material of the tensile material itself, the attenuation due to the amplitude, and the vibration of the entire spacing material are reduced. The difference in presence / absence is the sound insulation performance improvement.

[0011] Regarding heat insulation, in heat transfer of materials, there are many airtight surface materials, tensile materials, legs and member indirect points, so that heat transfer resistance is large, and that the tensile material has low thermal conductivity, Since the amount of heat conduction can be reduced by using fine wires, wires and fibers, the heat insulation performance can be improved.

In the radiant heat of the vacuum part, the heat insulation performance is improved by providing a heat reflecting layer in the vacuum layer.

[0012] In the method for joining airtight face materials, ultrasonic joining is preferable because it does not use heat, so that the vacuum body is not distorted and the joining work is easy. Ultrasonic welding is possible by using aluminum or plastic as the airtight face material and thinning the joint between the front and back airtight face materials.

In the case of brazing, by providing a thin part on the airtight face material and joining the outside of the thin part, the strain is concentrated on the thin part to reduce the effect of heat and the dimensional accuracy of the vacuum body is improved. . In addition, in the case of the frame material clamping method that does not use heat, there is no thermal deformation, so dimensional accuracy can be improved.

[0013] In terms of productivity, when airtight face materials alternately opposed to both surfaces of a tensile material are in contact with each other, it takes time to fasten the tension material to the airtight face material at both ends and important points. On the other hand, if the tensile material and the spacer are integrated into a single part, it is not necessary to keep it on the airtight surface material. Simply placing it between the airtight surface materials can reduce assembly time and improve productivity. Is greatly improved.

BEST MODE FOR CARRYING OUT THE INVENTION

[0014] Spacer integrated with either a fiber, a linear material, a strip-like material, a mesh-like material or a sheet-like material as a tensile material on both sides of a spacer in which legs are integrated at a predetermined interval with a bonding material It is a vacuum body in which a convex shape that touches the airtight surface material with dots or lines is brought into contact with both sides of the material, and the inside is hermetically bonded and the inside is evacuated.

[0015] A metal plate is mainly used as the airtight face material. When using plastic, aluminum Use metal or other metal-deposited “metsuki”. If it is difficult to integrally form a convex shape such as glass, the convex shape is formed with other members. For the convex shape of the airtight surface material, an airtight surface material molded into a V-shaped or U-shaped cross section at a predetermined interval, or an airtight surface material integrally molded by pulling out a leg of a cross-sectional I shape or T shape at a predetermined interval is used.

[0016] The tensile material is mainly plastic, glass fiber, or carbon fiber. When heat resistance is required, metal is used. Especially for plastics, materials that absorb vibration are desirable. Depending on the size of the vacuum body and the conditions of use, the properties are selected by using fine wires, fibers, bundling materials, strip materials, mesh materials, and sheet materials.

[0017] For the joining of the outer peripheral portion of the airtight face material, ultrasonic joining or pressing and clamping of the frame material is desirable. In the case of brazing, a thin portion is provided on the outer peripheral portion of the hermetic face material, and the outside of the thin portion is brazed to reduce thermal deformation and improve the dimensional accuracy of the vacuum body.

Example 1

FIG. 1 shows a vacuum panel 1 in which an airtight face material 2 formed with a plurality of convex bodies 3 on the vacuum layer side is used, and a frame material 4 is disposed around the vacuum panel 1 so that the inside is evacuated.

[0019] The vacuum body 1 in FIG. 1 (b) has a gap between the legs 6 with the bonding material 7 so that the convex body 3 molded into a V-shaped cross section of the airtight face material 2 is in contact with the tensile material 9 between the legs 6. Spacer holding material 5 with tension material 9 fastened to spacer 8 is arranged between opposing airtight surface materials 2 at intervals of each row of convex body 3 on held spacer 8 and surroundings. The frame material 4 is arranged on the top.

[0020] The tension material 9 is fastened by overlapping the tension material 9 or tightening it on the legs 6 and fastening an adhesive or another member. The integration of the leg 6 and the bonding material 7 is performed by welding, bonding, opening the leg 6 per bonding material 7 and fitting it in, and integrally forming the leg 6 and the bonding material 7. When the bonding material 7 is located between the convex bodies 3, the legs and the bonding material may be the same height.

[0021] The vacuum body in FIG. 1 (c) has a spacer 10 formed by integrally forming a leg 11 and a bonding material 12 by extruding metal or plastic, and a tensile material 14 at intervals to support the convex body 3. This is a vacuum body 1 having a structure in which a fixed spacing member 15 is sandwiched between hermetic face materials and a frame member 4 is arranged around it.

The bonding material 12 is formed by press-molding the curved surface 13 at a predetermined interval in order to prevent buckling against the compressive force of the tensile material 14. If stronger buckling prevention is required, use a hollow double plate. The leg 11 is in a position where it does not contact the convex shaped body 3 of the airtight surface material 2, and the tensile material 14 is in contact with each row of the convex shaped body 3 using fine wires or fibers in addition to the cross-sectional converging material shown in FIG. It is placed on both sides so as to cross the leg 11 at intervals.

[0023] The tension of the tension member 14 may be loosened so that the airtight face material and the leg do not come into contact with each other at the time of vacuum. Leg 1

The interval 1 is within the allowable range of stagnation of the tensile material 14 due to the atmospheric pressure load of the airtight face material 2 and is provided for each single convex shaped body 3 or in accordance with a plurality of intervals.

[0024] The convex body 3 is formed at an interval in which the stagnation of the airtight face material 2 between the convex bodies is within an allowable range.

The cross-section of the convex body 3 should have a shape that reduces the contact surface with the tensile material, such as a V shape.

[0025] Damping material 16 reduces vibration of tensile material 14, and is a molding material using a hard material such as metal or plastic, and has a groove with a width for locking tensile material 14, A tension member 14 is inserted into the groove and is stretched between the tension members to limit the weight of the mental material and the free vibration of the tension member 14 to be damped. Alternatively, a tensile material and a damping material that are integrated in a mesh shape by welding, bonding, binding, or the like in advance may be attached to the spacer.

[0026] When the upper airtight surface material of such a vacuum body receives sound, vibration is transmitted from the convex body to the upper tensile material, legs, lower tensile material, and lower airtight surface material. Vibration from the upper airtight surface material is attenuated during transmission from the convex body to the upper tensile material, internal attenuation of the tensile material and attenuation due to vibration, attenuation during transmission from the tensile material to the leg material, There is damping due to vibration, and there is damping in the reverse order from the upper side from the leg to the lower member, and these are the elements that greatly attenuate the vibration.

[0027] FIG. 1 (d) shows a different embodiment of the spacer, in which independent legs 17 are arranged in the vertical and horizontal directions and integrated with the bonding material 16, and a tensile material 18 is arranged on the top of the leg 17 for use.

FIG. 2 shows an aspect of the tensile material. FIG. 2 (a) shows a vacuum body 20 using an airtight surface material 21 formed with a U-shaped convex shape 22 and a sheet material 26 as a tensile material. The contact portion of the spacer 23 and the leg 24 of the spacer 23 in which the bonding material 25 and the leg 24 are integrated has a belt-like shape by providing an opening in the sheet material 26 to reduce the contact area.

The contact part between the seat material 26 and the leg 24 is made into a thin band 27, so that the vibration transmission from the seat material 26 is attenuated, and the energy loss is increased by installing the damping material of the weight 28. The

The vacuum body 30 in FIG. 2 (b) uses a tensile material 31 in which a triangular convex body is integrally formed with a belt-like material, and eliminates the need for molding the convex body of the airtight face member 33. In the lateral direction, the convex body 32 is arranged, and in the rear direction, the tensile material 31 is arranged at an interval where the airtight face material 33 is allowed to stagnate. The tension member 3 1 is provided with a V-shaped expansion / contraction part 33 in a ring shape and is fastened through a spacer 34 in which the bonding material 35 and the leg 36 are integrated. The V-shaped expansion / contraction part 33 facilitates the work when the spacer 34 is passed, and has a contraction force, so that it is not necessary to temporarily fix it after being placed in a predetermined position.

FIG. 2 (c) shows a vacuum body 38 in which an extruded aluminum material having hollow portions 40 at predetermined intervals is used as the airtight surface material 39 and a mesh material is used as the tension material 45. Productivity can be improved because it is only necessary to place the spacer 46 in which the joining material 43 and the leg 44 are integrated in the annular mesh-like tensile material 45.

[0031] Fig. 3 shows an extrudate with legs 49 at predetermined intervals for an airtight face 48, and the legs 49 facing each other inward so that they are between the legs. This is a vacuum body 47 in which a material 51 is arranged. The tension member 52 is formed by passing the shaft member 54 through the outermost leg 53 obtained by cutting a portion corresponding to the tension member 52 of the lower airtight face member 48a, and passing the shaft member 54 through the annular belt-like tension member 52. Is engaged and locked.

[0032] The other end of the tension member 52 is fastened to the outermost side opposite to the lower airtight face member 48a in the same manner. The airtight face member 48 is press-molded with an oval convex body 50 in the flat portion between the legs 49, thereby preventing the dent deformation due to atmospheric pressure in the flat portion. The shape can be arbitrary, such as a V-shaped or U-shaped cross section, and the orientation can also be outward.

[0033] The vibration from the upper leg due to the sound received by the upper airtight face member 48 is attenuated by transmission from the leg to the upper tensile material, attenuation by the tensile material, attenuation by the amplitude of the tensile material, Attenuation due to transmission from the upper side to the lower side, and attenuation from the lower tensile material to the lower member in the reverse order of the upper side. The tensile material may be a linear bundling material.

FIG. 4 shows a cross-sectional shape of the tensile material. Fig. 4 (a) shows a plurality of thin wires 58 (in the case of three in the figure) or a bundling material 57 of the fiber bundle 58, and Fig. 4 (b) shows a thick wire 60 in the center and the periphery of the fiber bundle 60. A bundling material 59 with thin wire rods 61 or fiber bundles 61, twisted into a rope shape, or bundled in parallel and bonded, welded, bound by other members, knots, etc. Integrated with each other.

FIG. 4 (c) shows a thin wire material 63 or a woven fabric of fiber bundles 63 that is used as the belt-like material 62. High vibration damping can be obtained by cutting a part of the bundling material and applying a tensile force only to the fine wires or fibers necessary for strength.

FIG. 5 shows a hermetic joining method of the outer peripheral portion of the vacuum body using a metal plate as the hermetic face material. In FIG. 5A, a thin portion 68 is provided at the center of the bent piece 66 on the outer peripheral portion of the bent airtight face member 65. The thin-walled portion 68 is used at a position where the thin-walled portion 68 of the bent portion 66 overlaps because there is no distortion of the airtight face material due to heat when ultrasonic bonding is performed.

[0037] When brazing or welding is used, the thin portion 68 is provided at a position where it does not overlap and the outer portion 69 is joined. By doing so, the load due to atmospheric pressure is applied to the base portion 70 of the bent piece 66, and the distortion of the base material due to heat is absorbed by the thin-walled portion and is prevented from reaching the entire airtight material 65. Further, by setting the thin portion 68 of the bent portion 66 so as not to overlap, the bending strength of the bent portion 66 can be prevented from being significantly reduced. The thin-walled portion 71 at the center of the hermetic face material 65 is provided when the entire air-tight face material 65 is distorted during vacuum drawing, and the distortion force is concentrated on the thin-walled portion 71 to prevent the vacuum body from being distorted.

[0038] Fig. 5 (b) shows the case where the frame member 73 is used, and the outer peripheral portion 79 of the airtight surface member 78 and the bent piece 76 of the frame member 73 are ultrasonically joined, and the edges 77 and 79 of both members are made thin. I have to. The thin-walled portion 74 at the center of the frame member 73 corresponds to the case where the thickness of the vacuum body changes greatly during evacuation. The thin-walled portion 74 is deformed inside the vacuum body, thereby reducing the thickness of the outer peripheral portion of the vacuum body.

[0039] Fig. 6 shows a case in which a frame material 81 formed by integrally forming a sharply-shaped small protrusion 82 that is in linear contact with the airtight surface material 80 is sandwiched, and the cover material 83 is bent from the outside of the airtight surface material 80. This is a method in which the outer periphery of the vacuum body is hermetically bonded by bending and bending the piece 87.

[0040] The cover material 83 has an inner width slightly smaller than the combined thickness of the frame material 81 and the airtight face material 80, the lower side has the base material 84 and the cross member 85 fixed, and the upper side has the base material 84 and the bent piece. A bent piece 87 made thin by making the thickness of the joint 89 of the 87 thin and easy to be bent is integrally formed like a chain line.

[0041] In the airtight joining method, the airtight surface material 80 is placed in contact with the base material together with the frame material 81 in the cover material 83 of the bent piece 87 opened upward. After that, by pressing the bent piece 87 with a press machine or the like, the hermetic face material 80 and the frame material 81 having a size larger than the inner width of the cover material 83 are pressed. As a result, the tips of the protrusions 82 are in close contact with the airtight face member 80 while collapsing to form an airtight joint.

[0042] The frame member 81 is mainly made of metal. The bent piece 86 is coated with an adhesive on the inner surface and integrated with the airtight surface material, and maintains the shape of the vacuum body. The small protrusions 82 may have a rounded tip, or a plurality of small protrusions 82 having the same height.

Industrial applicability

[0043] Application example 1: Since the performance of conventional sound insulation is proportional to the weight, heavy objects are also used for sound insulation of moving objects such as buses when lighting and other functions are required. However, it was difficult to obtain the necessary sound insulation performance. On the other hand, sound insulation using vacuum provides high sound insulation performance regardless of weight, so it is not possible to use movable sound insulation walls, moving objects such as aircraft and vehicles, soundproof rooms, and covers for industrial machines, which were not possible before. It becomes possible.

[0044] Application example 2: In the heat insulation, the flat panel can insulate as much as a thermos bottle, enabling high heat insulation regardless of thickness. In order to achieve higher performance, higher performance can be achieved by sandwiching a heat reflecting material between the airtight surface material and the tensile material over the entire surface. In addition, since only metal can be used, it can be used in environments where plastic insulation cannot be used.

Brief Description of Drawings

[0045] [FIG. 1] External perspective view and partial enlarged perspective view of vacuum body

[Figure 2] Partially enlarged perspective view of vacuum body

[Figure 3] Partially enlarged perspective view of vacuum body

[Figure 4] Cross section of tensile material

[Fig.5] Partially enlarged perspective view of outer periphery of airtight face material

[Fig. 6] Partial enlarged perspective view of the outer periphery of the vacuum body

Explanation of symbols

[0046] 1: Vacuum body 2: Airtight material 3: Convex body

4: Frame material 5: Spacing material 6: Leg

7: Joining material 8: Spacer 9: Tensile material

10: Spacer 11: Leg 12: Bonding material

13: Convex shape 14: Tensile material 15: Spacing material : Joining material 17: Leg 18: Tensile material: Vacuum body 21: Airtight surface material 22: Convex shape: Spacer 24: Leg 25: Joining material: Sheet material 27: Strip 28: Weight: Vacuum body 31: Tensile Material 32: Convex body: Spacer 39: Airtight surface material 42: Spacer: Mesh material 46: Spacing material 48: Airtight surface material: Leg 50: Convex shape 52: Tensile material: Shaft material 57: Focusing Material 58: Fiber bundle: 5¾ Close face material 66: Curved piece 68: Thin part: Frame material 76: Curved piece 80: Airtight face material: Frame material 82: Small protrusion 83: Cover material: Curved piece

Claims

The scope of the claims

[1] In a panel-shaped vacuum body space forming material, a linear material, a belt-like material, a mesh-like material, a sheet-like material between the legs of a spacer in which the bonding material and the legs arranged at a predetermined interval are integrated. Spacing material that has been placed as a tensioning material, or a misaligned or misaligned “wire or fiber”.

[2] In the formation of the space of the panel-like vacuum body, “the tensile material of the interval maintaining material according to claim 1 or the tensile material stretched between the convex portions formed at a predetermined interval toward the inside of the airtight surface material” A method of damping a tensile material that is “contacted or fastened” with a damping material.

[3] A panel-like vacuum body, wherein the spacing member of claim 1 is sandwiched between opposing airtight face materials.

[4] An airtight face material used in a panel-like vacuum body, in which a thin plate thickness portion is formed on the outer periphery.

[5] In the method for sealing a panel-shaped vacuum body, a frame member provided with continuous small protrusions on the surface in contact with the airtight surface material is disposed between the outer peripheral portions of the airtight surface material, and the bent piece of the cover material covering the outer peripheral portion A joining method in which the outer periphery of the vacuum body is hermetically sealed by the bent piece pressing the hermetic face material and the small protrusions in close contact with each other.

[6] A method for fastening a tensile material used to form a space in a panel-shaped vacuum body, in which a shaft material having a tensile material fastened to legs provided on both inner surfaces of an airtight surface material is fixed.