Vibration-free construction

Abstract

To provide a vibration isolation structure that can maintain specified performance over a long period of time without increasing manufacturing costs. [Solution] Multiple unit members UN, each consisting of a muscle body 10 made of an elastic material and a bag-shaped outer skin 20 that houses the muscle body 10, are connected in series to cover the outer periphery of the connecting portion CN of the mobile bodies MV1 and MV2. The muscle body 10 has a contour shape formed by an upper edge that forms a curved shape, a lower edge that also forms a curved shape, and left and right side edges that connect the upper and lower edges in a straight line, and muscle members in a straight and / or curved shape are arranged inside the contour shape.

Description

Technical Field

[0001] The present invention relates to a vibration isolation structure that covers the connection parts of connected moving bodies such as connected trucks and trains, and other connection parts between objects.

Background Art

[0002] A connected moving body is composed of a plurality of moving bodies connected together, and is composed of a leading moving body and a trailing moving body that follows it. When the connected moving body makes a curved movement in which the moving directions of the leading moving body and the trailing moving body do not match, a wall structure is required to absorb this difference in moving direction.

[0003] Therefore, a wall structure that covers the connection part in an annular shape is also known by continuously arranging unit members in which an elastic body is covered with a fibrous body (Patent Documents 1 and 2).

[0004] For example, in the configuration of Patent Document 1, as the elastic body, a synthetic resin sponge material formed in a square plate shape is used. While the front surface side of the square plate is formed into a flat surface, the back surface side of the square plate is formed into an arc surface cut with an arc.

[0005] On the other hand, in the configuration of Patent Document 2, a rubber material formed in a flat plate shape is used as the main body, and punched holes are formed in a part of this main body. The elastic main body composed of a sponge material or a rubber material is adhered with a fibrous body that covers these, and by contracting / elongating and deforming integrally with the fibrous body, it can cope with the curved movement of the connected moving body.

Prior Art Documents

Patent Documents

[0006] [[ID=?]] [[ID=?]]

Patent Document 1

Patent Document 2

Summary of the Invention

[0007]

Problems to be Solved by the Invention

[0007] It should be noted that the "?" in tags in the above translation indicates that the original text has some tags with consecutive numbers that seem to be incorrect or not in a standard format. I have translated according to the rules while leaving these tags as they are. If there is a specific rule or correction for these tags, the translation can be adjusted accordingly. In this case, this type of movable wall requires (1) the ability to deform smoothly when coupled vehicles move along curves, (2) continuity of shape with the moving body so as not to generate turbulence even when traveling at high speeds, (3) consistency of shape so as not to expand or contract even when there is a sudden change in air pressure such as when entering or exiting a tunnel, (4) robustness against flying objects from outside the moving body, and (5) resistance to direct sunlight, wind and rain, temperature changes, etc.

[0008] However, with conventional designs, the elastic body itself repeatedly contracts and expands, which posed a problem in that it could not maintain its initial performance over long periods of use. In particular, when the fiber body and elastic body were integrated by bonding or other means, there was a significant difference in the expansion and contraction rates of the fiber body and elastic body in the linear and shear directions, and this difference shortened the lifespan of the movable wall.

[0009] This invention has been made in view of the above-mentioned problems, and aims to realize a seismic isolation structure that can exhibit predetermined performance over a long period of time without increasing manufacturing costs. In other words, it aims to realize a seismic isolation structure that flexibly and robustly covers the connection points between objects, such as seismic isolation passages between buildings and between moving objects, and that absorbs differences in the types and displacements of the connected objects. [Means for solving the problem]

[0010] To achieve the above objective, the vibration isolation structure according to the present invention is a vibration isolation structure that covers the outer circumference of the connection between a forward moving body and a rear moving body by connecting a plurality of unit members, each unit member comprising a main body made of an elastic material and a housing part that houses the main body, and when evaluated in a front view in a free state, the main body has an upper side that forms a curved shape as a whole, a lower side that follows the shape of the upper side and forms a curved shape as a whole, and left and right side sides that linearly connect the upper side and the lower side, forming a contour shape, and linear and / or bent reinforcing members (linear reinforcing or curved reinforcing in the embodiment) are arranged inside the contour shape.

[0011] By having the above configuration, the present invention provides a structure in which an internal structure equivalent to muscle is covered with an outer skin equivalent to fascia, which can flexibly and robustly cover connection points between objects, such as seismic isolation passages between buildings and between moving objects, and can absorb differences in the type and displacement of the connected objects.

[0012] In this invention, the upper and lower edges that form the curved shape each serve as stretching allowances during elongation, thereby preventing the material itself from expanding or contracting. The curved shape is not limited to an upward-curving bulge as in the examples; it may also be a downward-curving depression. In any case, the main body of the unit members forming the upper and lower edges must have a predetermined elasticity (elastomerity), and therefore a thermosetting elastomer or thermoplastic elastomer is used.

[0013] Here, thermosetting elastomers refer to highly heat-resistant elastomers that do not soften when heated within a certain temperature range, and natural rubber and various synthetic rubbers fall into this category. Among synthetic rubbers, styrene-butadiene rubber and urethane rubber can be used because of their excellent mechanical strength. However, they are generally more expensive than thermoplastic elastomers, and their moldability is also inferior, which is a problem.

[0014] On the other hand, thermoplastic elastomers have the problem of being less heat-resistant than thermosetting elastomers because they deform easily with heat. However, thermoplastic elastomers are cheaper and lighter than thermosetting elastomers, and can be molded by injection molding, so thermoplastic elastomers are suitably used in this invention.

[0015] Here, polystyrene-based (TPS), olefin / alkene-based (TPO), polyvinyl chloride-based (TPVC), polyurethane-based (TPU), polyester-based (TPEE / TPC), and polyamide-based (TPAE) can be preferably listed as thermoplastic elastomers. Among these thermoplastic elastomers, polyurethane-based (TPU) polymers and polyester-based (TPEE / TPC) polymers are particularly preferred. In the examples, polyurethane-based (TPU) polymer (urethane-based thermoplastic elastomer) is used, and the main body of the unit member (UN) (muscle body 10) is realized as a single piece by injection molding. In other words, the main body of the present invention should preferably be a single molded product made of thermoplastic elastomer.

[0016] Furthermore, the containment section is preferably constructed of a fibrous material having breathability, waterproofing, and elasticity, or a box-shaped polymer material with ventilation holes. Suitable polymer materials include elastic rubber materials such as silicone rubber, nitrile rubber, chloroprene rubber, fluororubber, ethylene propylene rubber, urethane rubber, natural rubber, butyl rubber, and styrene-butadiene rubber.

[0017] Of these, silicone rubber is preferred, and it is even more preferable to construct a box-shaped storage compartment with a two-layer structure consisting of a surface layer (raw rubber layer) made of silicone rubber material and an inner layer (sponge rubber layer) made by adding a foaming agent to the same material and foaming it. In this case, ventilation can be achieved by providing appropriate ventilation holes in the box-shaped storage compartment. [Effects of the Invention]

[0018] According to the present invention described above, it is possible to realize a movable wall that can exhibit predetermined performance over a long period of time without increasing manufacturing costs. [Brief explanation of the drawing]

[0019] [Figure 1] This is a diagram illustrating the movable wall and its constituent members in general terms. [Figure 2] This is a drawing showing the flat, plate-shaped main body of the muscle. [Figure 3] This is a drawing showing the muscle body part in an inclined shape. [Figure 4] This is a drawing explaining the assembling method of the unit members constituting the movable wall. [Figure 5] This is a drawing explaining the accommodating part made of a rubber material.

Mode for Carrying Out the Invention

[0020] Hereinafter, based on the embodiments, the present invention will be described in more detail. Fig. 1(a) is a perspective view of a main part showing a state where the outer periphery of the connecting part CN connecting the forward moving body MV1 and the rearward moving body MV2 is covered by the movable wall WALL, and Fig. 1(b) is a schematic cross-sectional view obtained by cutting the movable wall WALL in the V direction of Fig. 1(a).

[0021] The movable wall WALL of the embodiment is configured by continuously arranging unit members UN having a predetermined thickness (T) along the outer periphery of the connecting part CN of the moving bodies MV1 and MV2, and the outer peripheral surfaces of the unit members UN are arranged flush so as to coincide with the outer peripheral surfaces of the moving bodies MV1 and MV2.

[0022] Here, the unit member UN is divided into a basic member U1 formed in a linear shape, bending members U2 and U3 arranged at the corner parts, and an auxiliary member U4 arranged at the central part of the ceiling roof RF. Hereinafter, the lower bending member U2 may be referred to as a shoulder bending member, and the upper bending member U3 may be referred to as a roof bending member.

[0023] However, any of the unit members UN (U1 to U4) is composed of a muscle body part 10 (Fig. 1(c)), which is a core material having elastomeric (rubber elasticity), and a cylindrical bag-shaped outer skin part 20 (Fig. 1(d)) that houses the muscle body part 10. Here, the muscle body part 10 is housed in the outer skin part 20 in a non-adhesive state and is in a non-restrained state with respect to each other, so that the deformation of one does not directly affect the other.

[0024] In this embodiment, the outer shell 20 is made of aramid fiber material, chosen for its excellent heat resistance, strength, flame retardancy, and chemical resistance. The aramid fiber material is then sewn into a cylindrical shape as a knitted fabric to complete the cylindrical bag-shaped outer shell 20 with open ends (see bottom of Figure 1(d)).

[0025] Furthermore, in the embodiment, by knitting the aramid fiber yarn with appropriate voids, in addition to the strength mentioned above, moderate breathability, elasticity, and flexibility are achieved. Also, by impregnating the aramid fiber yarn with an appropriate flexible resin, water repellency that prevents easy water penetration is achieved. This outer skin portion 20 is colored in an appropriate color, such as white or black, corresponding to the color of the outer surface of the mobile bodies MV1 and MV2 (Figure 1(d)).

[0026] In any case, in the unit member UN of this embodiment, the outer surface of the muscle body 10 is covered with an outer skin 20 made of aramid fiber material, thereby achieving (a) shape consistency without expansion / contraction during sudden changes in atmospheric pressure, (b) robustness against flying objects, and (c) resistance to direct sunlight, wind and rain, temperature changes, etc.

[0027] As explained earlier, the unit member UN of the embodiment is divided into a linear basic member U1 that is placed on the side wall or ceiling / roof RF, bent members U2 and U3 that are formed in a bent position along the corner shape, and an auxiliary member U4 that is placed in the center of the ceiling / roof RF.

[0028] In each of the unit members UN (U1 to U4), the muscle body 10 housed in the outer skin 20 is an integrally molded product (injection-molded product) with appropriate elasticity, preferably a thermoplastic elastomer. Among thermoplastic elastomers, polyurethane (TPU) polymers and polyester (TPEE / TPC) polymers are preferably selected, and in this embodiment, a polyurethane (TPU) polymer is used to realize the muscle body 10 of the unit member UN as an integral product by injection molding.

[0029] Based on the above, the explanation will continue with Figure 2. Figure 2 shows a front view (a), a left side view (b), a bottom view (c), and a perspective view (d) of the muscle body part 10 that constitutes the basic member U1. As explained earlier, the muscle body part 10 is an injection-molded product made of thermoplastic elastomer, and its plate thickness (=side width T) is preferably 100 mm or less, and more preferably about 30 to 50 mm.

[0030] As shown in Figure 2(a), the muscle body portion 10 is formed by arranging straight and curved muscles with a predetermined planar width d (for example, about 5 mm) at appropriate intervals, thereby creating a muscle structure that forms an overall double wavy contour shape.

[0031] In other words, the muscle body portion 10 has an upper edge 10a that forms an upward-curving bulge, a lower edge 10b that follows the shape of the upper edge 10a and also forms an upward-curving bulge, and left and right side edges 10c and 10d that linearly connect the upper edge 10a and the lower edge 10b, thus forming a double wavy contour.

[0032] The straight reinforcement bars forming the left and right sides 10c and 10d have elongated holes HO and HO openings at the top and bottom for mounting. In addition, large and small circular holes H1 and H2 are formed above and below the elongated holes HO and HO, surrounding the elongated holes.

[0033] During installation, a metal plate PL (stainless steel or aluminum alloy) is used. The metal plate PL is provided with a through hole IN corresponding to the elongated hole HO, and a nut NT is fixed to the position of this through hole IN. The metal plate PL configured in this way is fixed to the inside of the sides 10c and 10d of the muscle body 10 (see dashed line in Figure 2(a)). When the muscle body 10 in this state is housed in the outer shell 20, the unit member UN becomes ready for installation. At this time, the outer shell 20 is provided with an installation hole HO' corresponding to the position of the elongated hole HO in the muscle body 10.

[0034] Then, the mounting bolts BT, which pass through the mounting base BS of the movable bodies MV1 and MV2, pass through the mounting holes HO', the elongated hole HO, and the through hole IN, and are screwed into the nuts NT of the metal plate PL, thereby fixing the unit members UN to the movable bodies MV1 and MV2. The installation procedure will be described further later based on Figure 4.

[0035] Next, the specific structure of the muscle body 10 will be described. Downward-facing U-shaped grooves 11a, 11a are formed on the left and right sides of the curved muscle that forms the upper side 10a, and upward-facing U-shaped grooves 11b, 11b are formed on the left and right sides of the curved muscle that forms the base side 10b.

[0036] These U-shaped grooves 11a and 11b, along with the upper edge 10a and bottom edge 10b, are the parts that expand when the muscle body 10 is pulled from side to side. Together with the upper edge 10a and bottom edge 10b, the opening width of the four U-shaped grooves 11a and 11b widens in the left-right direction, preventing plastic deformation of the material itself. When the tension in the left-right direction is released, the four U-shaped grooves 11a and 11b, along with the upper edge 10a and bottom edge 10b, return to their original shape.

[0037] Furthermore, the expansion and contraction of the U-shaped channels 11a and 11b is the same even when the muscle body 10 bends in a direction perpendicular to the plane of the paper in Figure 2, and the shear stress on the muscle body 10 is relieved by deforming appropriately.

[0038] Furthermore, in the muscle body portion 10 of the embodiment, two straight reinforcing pieces 12, 12 are provided straight from the center of the upper side 10a to the left and right sides of the base side 10b, forming the equal sides of an isosceles triangle. An annular piece 13 is inscribed in an elliptical shape at the vertex of the isosceles triangle. This annular piece 13 is a part that exhibits appropriate resistance to external forces when the muscle body portion 10 expands and contracts in the left and right directions.

[0039] Next, between the left and right reinforcing pieces 12, 12 and the upper edge 10a, two bent connecting pieces 14a and 14b are provided in two rows, spaced apart from each other. As shown in the figure, the lower connecting piece 14b connects the bottom of the U-shaped channel 11a to the reinforcing piece 12 in a bent position.

[0040] These bent connecting pieces 14a and 14b, together with the upper and lower edges 10a and 10b, provide elongation against lateral tensile tension. When the muscle body 10 is pulled from side to side, each connecting piece 14a and 14b deforms to spread out and alleviate the bending posture, thereby preventing plastic deformation of the material itself. The expansion and contraction deformation of the connecting pieces 14a and 14b is also realized when the muscle body 10 bends in a direction perpendicular to the plane of the paper in Figure 2, and by deforming appropriately, it alleviates shear stress.

[0041] Furthermore, between the left and right reinforcing pieces 12, 12 and the base 10b, three rows of connecting pieces 15a, 15b, and 15c are provided, spaced apart from each other, in a straight or curved configuration. As shown in the figure, the central connecting piece 15b connects the top of the U-shaped channel 11b to the reinforcing piece 12 in a straight line. The upper connecting pieces 15a, 15a connect the reinforcing piece 12 to the top of the base 10b, starting from below the annular piece 13, in a straight line.

[0042] On the other hand, the lower connecting pieces 15c, 15c connect the lower part of the reinforcing piece 12 and the lower part of the base 10b in a bent shape. As shown in the figure, the connecting pieces 15c, 15c connect the lower part of the reinforcing piece 12 and the outer slope surface of the U-shaped grooves 11b, 11b in a somewhat extreme bent position.

[0043] These connecting pieces 15a to 15c maintain the integrity of the reinforcing piece 12 and the base 10b by appropriately deforming their straight or curved shapes when the muscle body 10 is pushed out in the left-right direction or when the muscle body 10 bends in a direction perpendicular to the plane of the paper in Figure 2.

[0044] Now, examining the positional relationship between the connecting pieces 14-15 and the reinforcing pieces 12,12, we see that the reinforcing pieces 12,12 are positioned to relay the displacement of the outer connecting pieces 14a,14b and the displacement of the inner connecting pieces 15a,15b,15c. Therefore, the reinforcing pieces 12,12 function as relay buffer walls that relay the displacement of the muscle body 10.

[0045] In other words, in this embodiment, instead of directly connecting the upper side 10a and the lower side 10b with straight or curved muscles, reinforcing pieces 12, 12 acting as intermediate buffer walls are provided, and numerous connecting pieces 14-15 are provided inside and outside these intermediate buffer walls. As a result, the bending length of the connecting pieces 14-15 can be appropriately controlled, and appropriate elasticity can be maintained even when an external force is applied to the muscle body 10 in the direction of stretching or bending.

[0046] Furthermore, since the length of each connecting piece 14-15 is suppressed, even when the muscle body 10 is contracted and each connecting piece 14-15 is bent to its limit, each connecting piece 14-15 does not interfere with other connecting pieces, and an orderly contraction shape can be achieved (see Figure 2(e)). By adopting an orderly contraction shape, localized overpressure of the connecting pieces 14-15 is avoided, and deformation or deterioration of the material itself is prevented.

[0047] Next, Figure 3 is a diagram illustrating the muscle body portion 10A that constitutes the shoulder flexion member U2, which is positioned below the inclined surface, and the muscle body portion 10B that constitutes the roof flexion member U3, which is positioned above the shoulder flexion member U2. The muscle body portions 10A and 10B are the same as the muscle body portion 10 shown in Figure 2 in their basic configuration. However, the difference from the muscle body portion 10 shown in Figure 2 is that the muscle body portion 10A of the shoulder flexion member U2 is curved at the bottom, and the muscle body portion 10B of the roof flexion member U3 is curved at the top.

[0048] As shown in Figure 1(b), the movable wall WALL of the embodiment is constructed by stacking unit members UN, which are broadly classified into basic members U1 and bending members U2 and U3. The basic member U1 is placed at the bottom of the movable wall WALL (left and right in Figure 1(b)).

[0049] Then, another basic member U1 is placed on top of the lowest basic member U1. Specifically, the basic members U1 are stacked one after another at the left and right positions shown in Figure 1(b), with the bottom edge 10b of the upper basic member U1 straddling the top edge 10a of the lower basic member U1.

[0050] In Figure 1(e), the sides of the two basic members U1 stacked vertically are deliberately shown separated into left and right sections, indicating that in the mounted state where the bottom edge 10b of the upper basic member U1 straddles the top edge 10a of the lower basic member U1, the total length of the two basic members U1 is a predetermined length (L).

[0051] After multiple basic members U1 are connected in this manner, the shoulder flexion member U2 is placed on top of the basic members U1. In this case as well, the lower shoulder flexion member U2 is positioned so that its bottom edge 10b straddles the upper edge 10a of the lower basic member U1 (see Figure 1(e)).

[0052] Next, the roof bending member U3 is attached above the shoulder bending member U2. In this case as well, by stacking the roof bending member U3 so that its bottom edge 10b straddles the upper edge 10a of the lower shoulder bending member U2, the upper edge 10a of the roof bending member U3 protrudes horizontally (see Figure 1(e)).

[0053] Subsequently, by connecting the basic member U1 following the roof bending member U3, the ceiling roof RF of the moving body is closed. Note that the stacking of the unit members UN described above is performed on the left and right sides of Figure 1(b), so at the central position of the ceiling roof RF of the moving bodies MV1 and MV2, the upper edges 10a of the left and right basic members U1 come into contact, creating a small gap.

[0054] Therefore, an auxiliary member U4 is positioned to fill the gap. The auxiliary member U4 is constructed, for example, by housing an Ω-shaped muscle body 10 within the outer skin 20. The Ω-shaped base end is then fixed to the movable bodies MV1 and MV2 to achieve the attached state.

[0055] Furthermore, the configuration of the auxiliary member U4 described above is not particularly limited, and a simpler configuration can be adopted in which a knitted aramid fiber material is stretched between the mounting bases BS, BS of the movable bodies MV1 and MV2. The above describes an example of a lamination procedure in detail, but of course the lamination procedure is not limited to the procedure described above.

[0056] Figures 4(a) and 4(b) are reference diagrams illustrating the above-described mounting procedure for confirmation. These diagrams show the mounting base BS of the mobile units MV1 and MV2. In Figure 4(a), for the purpose of explaining the connection method with the basic member U1, the position of the mounting base BS is shown separated into left and right sides from its actual position. The mounting base BS is a robust metal component, made of materials such as iron or stainless steel.

[0057] Based on the above, the procedure for completing the unit component UN and the installation work of the unit component UN will be explained for confirmation. First, the muscle body 10, which contains the metal plate PL, is housed in the cylindrical bag-shaped outer skin 20. In this housed state, the outer skin 20 is pulled to the left and right to flatten the surfaces of the outer skin 20 and the muscle body 10. At this time, a suitable amount of space is left between the muscle body 10 and the outer skin 20, but excess portions of the outer skin 20 still remain on the top, bottom, left, and right of the muscle body 10.

[0058] Next, mounting holes HO' corresponding to the elongated holes HO of the muscle body 10 are provided on the side surface of the completed unit member UN. Then, the excess portions of the outer skin 20 remaining on the left and right sides of the muscle body 10 are folded inward into the movable body, and the unit member UN is positioned between the mounting bases BS of the movable bodies MV1 and MV2. Then, the mounting bolts BT inserted into the openings of the mounting bases BS are screwed into the nuts NT of the metal plate PL held by the muscle body 10.

[0059] The stacking procedure for the unit members UN is not limited in any way, but for example, the installation work can be started from the lowest left and right positions in Figure 1(b). In this case, the basic members U1 are stacked sequentially from bottom to top, then the shoulder bending member U2 and the roof bending member U3 are placed, followed by the installation of the basic member U1 of the ceiling roof RF, and then the auxiliary member U4 is installed to complete the movable wall WALL.

[0060] Incidentally, some excess portion of the outer shell 20 will occur at the top and bottom of each unit member UN. However, this excess portion of the outer shell 20 can be dealt with by stacking the unit members UN at an appropriate density and housing the unnecessary portion inside the connecting portion CN, so the appearance of the movable wall WALL is not impaired. As explained earlier, the left and right excess portions of the outer shell 20 are folded inside the connecting portion CN.

[0061] Thus, the outer skin portion 20 of the movable wall WALL forms a wrinkle-free, flat outer surface, so it does not generate unnecessary air resistance and does not hinder the movement of the moving body. Furthermore, when an external force is applied to the movable wall WALL in a straight or inclined direction, the muscle body portion 10 elastically deforms appropriately, so it can follow the movement of the moving body without putting stress on the material itself.

[0062] In this regard, based on Figure 4(c), which illustrates the non-linear movement of the movable bodies MV1 and MV2, we will first explain the unit members UN that constitute the ceiling roof RF of the movable wall WALL. During non-linear movement, in the ceiling roof RF of the movable wall WALL, the unit members UN located on the right side in Figure 4(c) contract, while the unit members UN located on the left side in Figure 4(c) expand. Furthermore, in all unit members UN located in the ceiling roof RF, the left-right widths of their upper edge 10a and bottom edge 10b do not match.

[0063] However, at this time, in each unit member UN arranged on the ceiling roof RF, the straight and curved reinforcing bars that make up the muscle body 10 deform appropriately to achieve an expandable and contractible posture corresponding to curved movement, and the expansion and contraction of the elastic material itself is suppressed. As a result, the elasticity of the muscle body 10 does not deteriorate, and the predetermined performance can be maintained over a long period of time.

[0064] Next, we will explain the unit members UN that constitute the vertical surface of the movable wall WALL. Note that Figure 4(c) is a virtual plan view when the wall is cut in the H direction of Figure 4(b), and virtually shows a plan view of the middle section in the vertical direction of the movable wall WALL.

[0065] Based on the above, as shown in Figure 4(c), during non-linear movement, the mounting base BS of the moving body MV1 and the mounting base BS of the moving body MV2 are no longer parallel, so the planar shapes of all the basic members U1 to U1 that constitute the vertical plane become curved.

[0066] Specifically, the basic member U1 that makes up the movable wall on the left side of Figure 4(c) curves when extended, and the basic member U1 that makes up the movable wall on the right side of Figure 4(c) curves when contracted. Therefore, a shear force acts on each of these basic members U1.

[0067] However, in this embodiment, the muscle body 10 is divided by two reinforcing pieces 12, 12 on the left and right, and numerous straight and curved muscles are discretely arranged starting from the left and right reinforcing pieces 12. Therefore, even in the face of external forces in the twisting direction, deformation of the material itself is avoided, and bending deformation is possible. As a result, the elasticity of the muscle body 10 does not deteriorate, and the predetermined performance can be maintained over a long period of time.

[0068] As described above, this embodiment achieves a structure that does not bend outward by using a muscle body 10 in which straight and curved reinforcing bars are discretely arranged, thereby reducing resistance from airflow. Furthermore, by composing the muscle body 10 with a large number of straight and curved reinforcing bars, a structure that does not rely on the expansion and contraction of the material is achieved, and in particular, durability is greatly improved by appropriately changing shape in the shear direction.

[0069] Furthermore, since the muscle body portion 10 is a shape that can be manufactured by injection molding, quality is stable, and manufacturing costs are reduced by using thermoplastic elastomer. In addition, since the unit component UN is covered with a breathable outer shell portion 20, swelling due to pressure differences can also be suppressed.

[0070] Although the outer shell 20 is water-repellent, flooding due to heavy rainfall is unavoidable. However, any water that passes through the outer shell 20 will travel along the movable wall WALL to the ground, and any remaining moisture on the movable wall WALL will dry out during subsequent sunny weather, so no problems will arise.

[0071] Although embodiments of the present invention have been described in detail above, the specific details described are not particularly limiting to the present invention. That is, in the embodiments, the laminated structure of the unit members UN is a symmetrical laminated structure as shown in Figure 1(b), and the unit members UN are laminated from both the left and right sides of the connecting portion CN in the same orientation on both sides, but this is not particularly limited.

[0072] For example, the laminated structure can be modified by setting the length (L) of the connected unit members UN, UN shown in Figure 1(e) to an appropriate length corresponding to the total length of the ceiling roof RF. Specifically, in the connecting section CN shown in Figure 1(b), all unit members UN may be connected in the same direction from one side to the other in the left-right direction. When such a laminated structure is adopted, the auxiliary member U4 may be made unnecessary.

[0073] Furthermore, while the embodiments described so far have described a configuration in which the main muscle portion 10 is covered with a fibrous outer skin portion 20, the invention is not limited in any way. That is, it is also preferable to use a housing portion 40 made of an elastomerous polymer material instead of the fibrous outer skin portion 20. Figure 5 is a drawing showing a housing portion 40 formed in a box shape using rubber material.

[0074] This housing section 40 is composed of a first member 40a and a second member 40b, which mimic the shape of the muscle body section 10. With the muscle body section 10 housed inside, the first member 40a and the second member 40b are tightly fitted together to complete the unit member UN. This unit member UN is also fixed to the mounting base section BS of the mobile body MV using a metal plate PL or the like.

[0075] Silicone rubber is preferred as the constituent material for the first member 40a and the second member 40b. The housing section 40 in Figure 5 has a two-layer structure in both members 20a and 20b, consisting of a surface layer (raw rubber layer) made of silicone rubber and an inner layer (sponge rubber layer) which is foamed by adding a foaming agent. However, no adhesives are used in this double structure; the inner layer and the surface layer are integrated while foaming by heat vulcanization of the inner layer, which is mixed with a foaming agent and a crosslinking agent.

[0076] The housing section 40 obtains the necessary elasticity by using silicone rubber, but in order to achieve a certain level of breathability, the first member 40a and the second member 40b are provided with gaps of appropriate size at appropriate positions. [Explanation of symbols]

[0077] 10 Main body (muscle part) 20 Storage Units UN Unit Components (U1~U4) CN connection part 10a Top edge 10b Base 10c,10d side 12 Reinforcement piece

Claims

1. A vibration isolation structure that covers the outer circumference of the connecting portion between a forward-moving body and a rear-moving body by connecting multiple unit members, each unit member consisting of a main body made of an elastic material and a housing portion that houses the main body, When evaluated in a free state and viewed from the front, the main body has an upper edge that forms a curved shape overall, a lower edge that follows the shape of the upper edge and also forms a curved shape overall, and left and right side edges that connect the upper edge and the lower edge in a straight line, thus forming a contour shape. A vibration isolation structure in which straight and / or curved reinforcing members are arranged inside the aforementioned contour shape.

2. The vibration isolation structure according to claim 1, wherein the main body is an integrally molded product made of thermoplastic elastomer.

3. The vibration isolation structure according to claim 1, wherein the left and right sides of the main body portion housed in the housing portion are fixed to the forward moving body and the rear moving body, respectively, so that the unit member is in a fixed state.

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