JP7572016B2 - Expansion member - Google Patents

Description

The present invention relates to an expansion member.

For example, Patent Document 1 describes a conventional evacuation chute. The evacuation chute described in the document has a sliding section that supports evacuees as they slide down the slope. This evacuation chute is used in a state where air is injected into the internal space of the sliding section, causing the sliding section to be inflated.

Japanese Patent Application Publication No. 9-201423

The sliding section of the evacuation chute described in the document needs to be rigid enough to support evacuees as they slide down the slide. Therefore, in order to stabilize the shape of the sliding section, it was necessary to apply high pressure to the internal space of the sliding section. Also, in order to apply high pressure inside the sliding section, it was necessary to improve the pressure resistance of the sliding section.

The present invention aims to provide an evacuation chute that can increase the rigidity of the sliding section even if the pressure in the internal space of the sliding section is lower than in conventional cases.

The evacuation chute is for allowing evacuees to slide down from inside the vehicle to the outside. The evacuation chute comprises a base body and a side material. The base body forms an internal space. The side material seals the internal space by covering the entire side of the base body. The base body comprises a first base fabric, a second base fabric, a first resin layer, a second resin layer, and a connecting thread. The second base fabric is a fabric arranged opposite the first base fabric with a gap between the first base fabric and the second base fabric that forms the internal space. The first resin layer is provided on the first base fabric. The second resin layer is provided on the second base fabric. The connecting thread densely connects the first base fabric and the second base fabric. The evacuation chute comprises a sliding section that is arranged at an angle to the horizontal direction and allows the evacuees to slide down. The sliding section includes the base body.

The above configuration allows the rigidity of the sliding section to be increased even if the pressure in the internal space of the sliding section is lower than in the past.

FIG. 1 is a perspective view showing an evacuation chute 1 of a first embodiment. 2 is a view of the evacuation chute 1 shown in FIG. 1 as viewed from the lower side Z2. 2 is a view of the evacuation chute 1 shown in FIG. 1 as viewed from the width direction Y. FIG. 2 is a view of the evacuation chute 1 shown in FIG. 1 as seen from the front side X1. 2 is a view of the substrate body 30 shown in FIG. 1 as viewed in the thickness direction. 5A and 5B are views showing a modification of the arrangement of the first connecting portion 34a shown in FIG. 5. 6 is a cross-sectional view taken along the line F7-F7 in FIG. 5. 8 is a cross-sectional view showing a surface of a substrate body 30 shown in FIG. 7 . 2 is a cross-sectional view of the sliding section 11 and the sliding section horizontal handrail section 17a shown in FIG. 1 as viewed from the sliding direction S. FIG. 2 is a cross-sectional view of the sliding portion 11 and the downward bend portion 15 shown in FIG. 1 as viewed from the width direction Y. FIG. FIG. 11 is a perspective view showing an evacuation chute 201 according to a second embodiment. 12 is a view of the evacuation chute 201 shown in FIG. 11 as viewed from the lower side Z2. 12 is a view of the evacuation chute 201 shown in FIG. 11 as viewed from the width direction Y. 12 is a view of the evacuation chute 201 shown in FIG. 11 as viewed from the front side X1. 13 is a view of the evacuation chute 301 of the third embodiment as viewed from the lower side Z2. 16 is a view of the evacuation chute 301 shown in FIG. 15 as viewed from the width direction Y. 16 is a view of the evacuation chute 301 shown in FIG. 15 as viewed from the front side X1. FIG. 13 is a perspective view showing an evacuation chute 401 according to a fourth embodiment. 19 is a view of the evacuation chute 401 shown in FIG. 18 as viewed from the width direction Y. This is a view taken along the arrow F20 in Figure 19, showing the evacuation chute 401 as seen from the front side X1. This is a view taken along the arrow F21 in Figure 19, showing the evacuation chute 401 as seen from the rear side X2. 22 is a cross-sectional view taken along the line F22-F22 in FIG. 20.

First Embodiment
An evacuation chute 1 of a first embodiment will be described with reference to FIGS.

The evacuation chute 1 (escape chute, chute) is for allowing evacuees to slide down from inside the vehicle C (see FIG. 3) to the outside of the vehicle C (front side X1). The evacuation chute 1 is used when evacuees evacuate (escape) from the vehicle C in an emergency. The vehicle C in which the evacuation chute 1 is used is, for example, a railway vehicle. When the vehicle C is a railway vehicle, the evacuation chute 1 may be provided on a door (e.g., a boarding/alighting door) on the side of the vehicle C, or on a door (e.g., a through door, such as a driver's cab) at the front or rear ends of the vehicle C. As shown in FIG. 1, the evacuation chute 1 includes a chute body 10, an attachment section 61 (see FIG. 2), a supply/discharge section 62, a seat attachment/detachment section 63, a seat 64, a protective section 65 (see FIG. 2), and a height adjustment material 66.

The chute body 10 is the main body of the evacuation chute 1. When the evacuation chute 1 is in use, the chute body 10 is inflated, and gas (e.g., air) is injected into the internal space 10s (see FIG. 7) of the chute body 10. When the evacuation chute 1 is not in use (e.g., when stored), the chute body 10 is in a deflated state, for example, folded (e.g., zigzag or rolled). The state of the evacuation chute 1 when in use will be described below. Focusing on the shape of the chute body 10, the chute body 10 comprises a sliding section 11 and a bent section 12. Focusing on the material constituting the chute body 10, the chute body 10 comprises a base material 20 and a fixing material 50.

As shown in FIG. 3, the sliding section 11 is a section for allowing evacuees to slide down from inside the vehicle C to outside the vehicle C (front side X1). The sliding section 11 is configured to allow evacuees to slide down on the sliding section 11. The sliding section 11 is disposed at an angle to the horizontal direction. As shown in FIG. 1, the sliding section 11 is approximately plate-shaped.

(direction)
The directions related to the evacuation chute 1 are defined as follows. The direction along the slope of the sliding section 11, that is, the downward side (downward direction) of the slope of the sliding section 11, is defined as the sliding direction S. In the example shown in FIG. 1, the direction along the slope of the sliding section 11 is the longitudinal direction of the sliding section 11. The vertical direction is defined as the up-down direction Z (upper side Z1, lower side Z2). As shown in FIG. 3, the horizontal direction in which evacuees enter and exit the vehicle C is defined as the front-rear direction X. In the front-rear direction X, the side (direction of evacuees going out) from inside the vehicle C to outside the vehicle C is defined as the front side X1, and the opposite side (the side going from outside the vehicle C to inside the vehicle C) is defined as the rear side X2. As shown in FIG. 1, the direction perpendicular to each of the up-down direction Z and the front-rear direction X is defined as the width direction Y. The width direction Y is a horizontal direction perpendicular to the sliding direction S. As shown in FIG. 2, the width direction Y includes a width direction inner side Y1 and a width direction outer side Y2. The inner width direction Y1 is the side toward the center of the sliding portion 11 in the width direction Y (e.g., the central axis of the sliding portion 11 extending in the longitudinal direction of the sliding portion 11). The outer width direction Y2 is the side away from the center of the sliding portion 11 in the width direction Y.

As shown in FIG. 1, the bent portion 12 extends from the end of the sliding portion 11 so as to bend relative to the sliding portion 11. The bent portion 12 includes an upper bent portion 13, a lower bent portion 15, and a handrail portion 17.

As shown in FIG. 3, the upper bend portion 13 is provided so as to extend from the upper side Z1 portion of the sliding section 11 to the rear side X2. The upper bend portion 13 and the sliding section 11 are provided continuously. The upper bend portion 13 is placed on the vehicle C, for example, on the floor of the vehicle C. The upper bend portion 13 is approximately plate-shaped (as is the lower bend portion 15). The upper bend portion 13 is arranged so as to extend in the horizontal direction or approximately horizontal direction (as is the lower bend portion 15). The upper bend portion 13 is bent with respect to the sliding section 11 and is bent with respect to the sliding direction S (as is the lower bend portion 15).

The downward bend 15 supports the sliding section 11 from the lower side Z2. The downward bend 15 is provided to extend from the lower side Z2 portion of the sliding section 11 to the front side X1 or the lower side Z2. In this embodiment, the downward bend 15 extends from the lower side Z2 portion of the sliding section 11 to the front side X1. In this case, the downward bend 15 is a portion (deceleration portion) that slows down the evacuees who slide down the sliding section 11. The downward bend 15 and the sliding section 11 are provided continuously. The downward bend 15 is placed in a place where the evacuees are trying to evacuate (for example, the ground G).

As shown in FIG. 1, the handrail section 17 restricts the movement of evacuees from above the chute body 10 to the outside in the width direction Y2. The handrail section 17 is configured so that evacuees can place their hands on it. The handrail section 17 is positioned to extend from the outside in the width direction Y2 (left and right) of the sliding section 11, etc., to the upper side Z1. The handrail section 17 includes a sliding section side handrail section 17a, an upper handrail section 17b, and a lower handrail section 17c.

The sliding section side handrail portion 17a is provided so as to extend (protrude) from the widthwise outer Y2 portion (for example, the widthwise outer Y2 end portion) of the sliding section 11 to the upper side Z1. The sliding section side handrail portion 17a is provided on both sides (left and right) of the widthwise outer Y2 of the sliding section 11. The sliding section side handrail portion 17a is bent with respect to the sliding section 11. As shown in FIG. 4, the angle formed by the vector in the widthwise outer Y2 direction and the vector in the direction in which the sliding section side handrail portion 17a protrudes from the sliding section 11 when viewed from the front-rear direction X is the angle θa. The above-mentioned "direction in which the sliding section side handrail portion 17a protrudes from the sliding section 11 when viewed from the front-rear direction X" is the direction from the base end of the sliding section side handrail portion 17a to the tip end, and is the direction of the central axis of the sliding section side handrail portion 17a passing through the center of the thickness direction T (see FIG. 9) of the sliding section side handrail portion 17a. The bending angle θb of the upper handrail portion 17b relative to the width direction Y, and the bending angle θc of the lower handrail portion 17c relative to the width direction Y are defined in the same manner as the bending angle θa of the sliding section side handrail portion 17a relative to the width direction Y. For example, the bending angle θa of the sliding section side handrail portion 17a relative to the width direction Y may be 90°, approximately 90°, or less than 90° (the same applies to angles θb and θc).

As shown in FIG. 1, the upper handrail 17b is provided so as to extend (protrude) from the widthwise outer Y2 portion (e.g., the widthwise outer Y2 end portion) of the upper bent portion 13 to the upper side Z1. The upper handrail 17b is provided on both sides (left and right) of the widthwise outer Y2 of the upper bent portion 13. The upper handrail 17b is bent relative to the upper bent portion 13.

The lower handrail portion 17c is provided so as to extend (protrude) from the widthwise outer Y2 portion (e.g., the widthwise outer Y2 end portion) of the lower bent portion 15 to the upper side Z1. The lower handrail portion 17c is provided on both sides (left and right) of the widthwise outer Y2 of the lower bent portion 15. The lower handrail portion 17c is bent relative to the lower bent portion 15. Note that the angles θa, θb, and θc shown in FIG. 4 may be the same (or approximately the same) size as each other, or may be different from each other.

The base material 20 is a member (material) constituting the chute body 10 shown in FIG. 1. The base material 20 is approximately plate-shaped. More specifically, when the pressure of the internal space 10s (see FIG. 7) of the base material 20 is within a predetermined range, the base material 20 is approximately plate-shaped. The pressure in the "predetermined range" is high enough that the sliding section 11 made of the base material 20 does not bend when an evacuee rides on the sliding section 11 (it is acceptable for the sliding section 11 to bend within an allowable range). Specifically, for example, the maximum value of the pressure in the predetermined range is 0.8 kg/ ^cm2 . The numerical values can be changed as appropriate (the same applies to the following numerical values). The base material 20 includes a base material body 30 and a side material 40.

The substrate body 30 is a substantially flat portion of the substantially plate-shaped substrate 20. The sliding section 11 and the bent section 12 (upper bent section 13, lower bent section 15, and handrail section 17) include the substrate body 30. Figures 5 to 7 show the substrate body 30 constituting the sliding section 11. As shown in Figure 7, the substrate body 30 forms an internal space 10s. The greater the thickness (dimension in the thickness direction T) of the substrate body 30, the higher the rigidity of the substrate body 30. The thickness direction T is the direction in which the first base cloth 31a and the second base cloth 31b described later face each other. For example, the thickness direction T (see Figure 7) of the substrate body 30 in the upper bent section 13 and the lower bent section 15 shown in Figure 1 is the vertical direction Z. For example, the thickness direction T of the substrate body 30 in the sliding section 11 is a direction perpendicular to each of the sliding direction S and the width direction Y. The thickness of the base material body 30 shown in FIG. 7 is specifically within a range of 50 to 100 mm, for example, 80 mm. The base material body 30 includes a first base fabric 31a, a second base fabric 31b, a first resin layer 32a, a second resin layer 32b, a connecting thread 33, a recessed portion 35 (see FIG. 8), a folded portion 36 (see FIG. 9), and a folded outer portion 37 (see FIG. 9). Note that in FIG. 7 and other figures, only some of the connecting threads 33 are labeled with reference numerals.

The first base fabric 31a is a cloth. The first base fabric 31a may be a woven fabric formed by warp and weft threads, or may be a knitted fabric formed by thread loops. When the first base fabric 31a is a woven fabric, the gaps between the threads constituting the first base fabric 31a are usually smaller than when the first base fabric 31a is a knitted fabric. Therefore, when the first base fabric 31a is a woven fabric, it is harder, has higher shape retention, and is more abrasion resistant (can be used for a long period of time) than when the first base fabric 31a is a knitted fabric. On the other hand, when the first base fabric 31a is a knitted fabric, the gaps between the threads constituting the first base fabric 31a are usually larger than when the first base fabric 31a is a woven fabric. Therefore, when the first base fabric 31a is a knitted fabric, the degree of freedom of movement between the threads constituting the first base fabric 31a is greater, and the first base fabric 31a is softer, easier to bend, and more stretchable than when the first base fabric 31a is a woven fabric. When the first base fabric 31a is knitted, the evacuation chute 1 can be folded up more compactly when stored than when the first base fabric 31a is woven.

The second base cloth 31b is a cloth similar to the first base cloth 31a. The second base cloth 31b is arranged with a gap between it and the first base cloth 31a, which forms the internal space 10s. The second base cloth 31b is arranged opposite the first base cloth 31a. The gap between the first base cloth 31a and the second base cloth 31b forms the internal space 10s. The first base cloth 31a, the second base cloth 31b, and the connecting thread 33 are made, for example, by machine weaving (or machine knitting) and three-dimensional weaving (or three-dimensional knitting). The first base cloth 31a, the second base cloth 31b, and the connecting thread 33 are woven (or knitted) at the same time. The first base cloth 31a and the second base cloth 31b may be woven (or knitted) separately. In this case, the structure of the first base cloth 31a and the structure of the second base cloth 31b (for example, whether they are woven or knitted) may be different.

The first resin layer 32a is a layer that is provided on the first base fabric 31a and contains resin. The first resin layer 32a is a layer (impermeable layer, coating) that prevents gas from passing through the first base fabric 31a. The material (raw material) and thickness of the first resin layer 32a are set, for example, so that the impermeability of the first resin layer 32a is ensured. It is preferable that the material (raw material) and thickness of the first resin layer 32a are set so that at least one of the strength and the bendability of the first resin layer 32a is ensured. The material of the first resin layer 32a may be, for example, a vinyl chloride resin (such as polyvinyl chloride), an olefin resin, or a urethane resin. When the first resin layer 32a is a vinyl chloride resin, the thickness of the resin layer 32 is, for example, 0.3 to 1.5 mm.

The first resin layer 32a may be laminated on the first base cloth 31a (the first resin layer 32a and the first base cloth 31a may be separate). In this case, for example, the first resin layer 32a may be formed by attaching a film-like or sheet-like resin, which is the material of the first resin layer 32a, to the first base cloth 31a, for example, by heat. The first resin layer 32a may be provided on only one side of the first base cloth 31a, or on both sides of the first base cloth 31a. When the first resin layer 32a is provided only on the outer surface of the first base cloth 31a (the surface opposite the internal space 10s), processing can be easily performed on the inner surface of the first base cloth 31a (the surface on the internal space 10s side), and processing such as sewing with a sewing machine can be easily performed.

The first resin layer 32a may be provided integrally with the first base cloth 31a. For example, the first base cloth 31a may be impregnated with a resin that is the material of the first resin layer 32a, so that the first resin layer 32a and the first base cloth 31a are provided integrally. In this case, for example, a paste-like resin that is the material of the first resin layer 32a is applied to the first base cloth 31a. Then, the resin and the first base cloth 31a are heated and dried to form the first resin layer 32a.

The second resin layer 32b, like the first resin layer 32a, is a layer (impermeable layer, coating) that prevents gas from passing through the second base cloth 31b. Just as the first resin layer 32a is provided on the first base cloth 31a, the second resin layer 32b is provided on the second base cloth 31b. The configuration of the second resin layer 32b (material, thickness, whether it is separate from or integrated with the second base cloth 31b, etc.) may be the same as or different from the first resin layer 32a. In the sliding section 11, the first base cloth 31a and the first resin layer 32a form the surface of the upper side Z1 of the sliding section 11 (the sliding section upper surface 11a (see FIG. 3), the surface on the side where evacuees slide down), and the second base cloth 31b and the second resin layer 32b form the surface of the lower side Z2 of the sliding section 11.

The connecting thread 33 (connecting thread) is a thread that connects the first base cloth 31a and the second base cloth 31b. The connecting thread 33 restricts the expansion of the base material body 30. More specifically, when the base material body 30 tries to expand and the first base cloth 31a and the second base cloth 31b try to separate from each other, tension is generated in the connecting thread 33, restricting the expansion of the base material body 30. The connecting thread 33 densely connects the first base cloth 31a and the second base cloth 31b (described later).

The connecting thread 33 may be connected to the first base cloth 31a and the second base cloth 31b at the same time that the first base cloth 31a and the second base cloth 31b are woven (or knitted). The connecting thread 33 may be attached (e.g., sewn) to the first base cloth 31a and the second base cloth 31b after the first base cloth 31a and the second base cloth 31b are woven (or knitted).

The connecting portion between the connecting thread 33 and the first base cloth 31a is the first connecting portion 34a. The connecting portion between the connecting thread 33 and the second base cloth 31b is the second connecting portion 34b. In addition, in Figs. 5 to 7, 9, and 10, only some of the first connecting portions 34a are labeled with a symbol (the same applies to the connecting thread 33 and the second connecting portion 34b). In addition, Fig. 5 is a view of the first base cloth 31a as seen from the opposite side to the internal space 10s (see Fig. 7), and in Fig. 5, the position of the first connecting portion 34a is indicated by a black circle and the position of the second connecting portion 34b is indicated by a dashed circle. Below, the base body 30 constituting the sliding portion 11 shown in Fig. 1 will be mainly described. For the base material body 30 that constitutes the upper bend 13, the lower bend 15, the upper handrail 17b, and the lower handrail 17c, the "slide direction S" in the description of the base material body 30 that constitutes the sliding section 11 below should be read as the "front-rear direction X." For the base material body 30 that constitutes the sliding section side handrail 17a, the above-mentioned replacement is not necessary. The connecting threads 33 form a connecting thread row 33L.

As shown in FIG. 5, the connecting thread row 33L is arranged to extend in the sliding direction S when viewed from the thickness direction T. The connecting thread row 33L is arranged to extend linearly or approximately linearly in the sliding direction S when viewed from the thickness direction T. A plurality of connecting thread rows 33L are provided. The plurality of connecting thread rows 33L are arranged at intervals from each other in the width direction Y (direction perpendicular to each of the thickness direction T and the sliding direction S). The plurality of connecting thread rows 33L are configured similarly (for example, identically) to each other. Below, one connecting thread row 33L out of the plurality of connecting thread rows 33L will be described. As shown in FIG. 7, two connecting threads 33 adjacent to each other in the sliding direction S in the connecting thread row 33L are called connecting thread 33a and connecting thread 33b. The angle (an angle of 0° or more and 90° or less) between the direction in which the connecting thread 33a extends and the sliding direction S is called angle θ33a. The angle between the sliding direction S and the direction in which the connecting thread 33b extends (an angle between 0° and 90°) is defined as angle θ33b.

(Arrangement of the connecting thread 33, the first connecting portion 34a, and the second connecting portion 34b)
The connecting yarn row 33L is preferably arranged so as to suppress the movement (relative movement) of the first base cloth 31a in the sliding direction S with respect to the second base cloth 31b. Specifically, the angle θ33a is less than 90°. More specifically, the connecting yarn 33a is arranged at an incline with respect to the thickness direction T so as to move toward the sliding direction S from the second connecting portion 34b (second base cloth 31b) toward the first connecting portion 34a (first base cloth 31a). Therefore, when the first base cloth 31a tries to move in the sliding direction S with respect to the second base cloth 31b, tension is generated in the connecting yarn 33a. This tension becomes a resistance force against the movement of the first base cloth 31a in the sliding direction S with respect to the second base cloth 31b, and this movement is suppressed. The smaller the angle θ33a, the more the relative movement of the first base cloth 31a in the sliding direction S with respect to the second base cloth 31b is suppressed. The angle θ33b may be less than 90°. More specifically, the connecting thread 33b may be arranged at an angle with respect to the thickness direction T so as to move toward the sliding direction S from the first connecting portion 34a to the second connecting portion 34b. When the angle θ33b is less than 90°, movement of the first base fabric 31a relative to the second base fabric 31b in the opposite direction to the sliding direction S can be suppressed. Furthermore, the angle θ33a and the angle θ33b may be equal to or different from each other.

The connecting thread row 33L is arranged so as to be continuous (without interruption) in a zigzag shape between the first base cloth 31a and the second base cloth 31b. The above "continuous" includes the case where the connecting thread 33a and the connecting thread 33b are actually continuous at the first connecting portion 34a (similar to the second connecting portion 34b). The above "continuous" may also include the case where the connecting thread 33a and the connecting thread 33b are visually continuous at the first connecting portion 34a (similar to the second connecting portion 34b). The arrangement of the connecting thread 33a and the connecting thread 33b is repeated in the sliding direction S between the first base cloth 31a and the second base cloth 31b, so that the connecting thread row 33L is arranged in a zigzag shape as viewed from the width direction Y. The condition for the connecting thread row 33L to be "continuous in a zigzag shape" includes that at least one of the angles θ33a and θ33b is less than 90°. In the example shown in FIG. 7, the connecting thread row 33L has a zigzag shape like a V-shape continued in the sliding direction S when viewed from the width direction Y. Note that, for example, a case where one of the angles θ33a and θ33b is less than 90° and the other is 90° is also included in the "zigzag shape" described above.

The connecting thread rows 33L do not have to be arranged in a zigzag pattern when viewed from the width direction Y. For example, the connecting threads 33 may be arranged to extend in a direction that coincides with the thickness direction T between the first base cloth 31a and the second base cloth 31b. Also, the arrangement of the connecting thread rows 33L (see FIG. 7) in the sliding section 11, the upper bend section 13, the lower bend section 15, and part of the handrail section 17 shown in FIG. 1 may be different from the arrangement of the connecting thread rows 33L in other parts.

As described above, the connecting thread 33 shown in FIG. 7 densely connects the first base cloth 31a and the second base cloth 31b. Here, the distance between the first connecting parts 34a, 34a that are adjacent to each other (for example, adjacent in the sliding direction S) is set to the distance A1. The distance between the second connecting parts 34b, 34b that are adjacent to each other (for example, adjacent in the sliding direction S) is set to the distance A2. The distance between the first base cloth 31a and the second base cloth 31b (the distance in the thickness direction T) is set to the distance A3. In this case, when the distance A1 and the distance A2 are each less than the distance A3, the connecting thread 33 is said to "densely connect" the first base cloth 31a and the second base cloth 31b. The value of "spacing A1/spacing A3" is, for example, 1/2 or less, 1/3 or less, 1/4 or less, 1/5 or less, 1/6 or less, 1/7 or less, or 1/8 or less (the same applies to the value of "spacing A2/spacing A3"). Specifically, for example, 50 to 100 first connecting parts 34a are arranged on a first base cloth 31a having a size of 10 cm square (within a range of 10 cm length and 10 cm width) (the same applies to the second base cloth 31b and the second connecting parts 34b). Note that, if there is variation in the spacing between the first connecting parts 34a, 34a, the average value of the multiple spacings may be set as "spacing A1" (the same applies to spacing A2 and spacing A3). In the example shown in FIG. 7, the spacing between the first connecting parts 34a in the sliding direction S is set as spacing A1. On the other hand, if the distance between the first connecting portions 34a, 34a varies depending on the direction of measurement, the distance in the direction in which the distance is smallest may be taken as "distance A1" (the same applies to distance A2).

As described above, the first base cloth 31a, the second base cloth 31b, and the connecting thread 33 (hereinafter referred to as "first base cloth 31a, etc.") may be woven (or knitted) at the same time. In this case, the first base cloth 31a, etc. may be manufactured in the direction in which the connecting thread row 33L shown in FIG. 5 extends (the sliding direction S in the example shown in FIG. 5). In this case, the wider the interval A4 between the first connecting parts 34a, 34a in the direction in which the connecting thread row 33L extends, the faster the manufacturing of the first base cloth 31a, etc. can be. Specifically, for example, the interval A4 (e.g., 12 mm, etc.) is wider than the interval A5 (interval in the width direction Y) between the connecting thread rows 33L (e.g., 10 mm, etc.) (similarly for the second connecting part 34b). In the example shown in FIG. 5, the distance A4 between the first connecting parts 34a in the direction in which the connecting thread row 33L extends is equal to the distance A1 in the direction in which the distance between the first connecting parts 34a is smallest, but the distance A4 and the distance A1 may be different.

The first connecting portion 34a and the second connecting portion 34b are preferably arranged so that the tension of the connecting thread 33 acts on the first base cloth 31a and the second base cloth 31b in a well-balanced manner. Specifically, when viewed from the thickness direction T, the first connecting portion 34a is preferably arranged in a staggered pattern (similar to the second connecting portion 34b). More specifically, the deviation in the sliding direction S between the first connecting portions 34a (first connecting portion 34a-1 and first connecting portion 34a-2) of the connecting thread rows 33L adjacent to each other in the width direction Y is defined as deviation D. In this case, deviation D is greater than 0. Also, the line segment connecting the first connecting portions 34a-1 and 34a-1 adjacent to each other in the sliding direction S is defined as line segment B1. The line segment connecting the two first connecting portions 34a-2 and 34a-2 arranged to sandwich line segment B1 in the width direction Y is defined as line segment B2. At this time, the line segment B1 other than both ends intersects with the line segment B2 other than both ends. The staggered arrangement of the first connecting parts 34a provides the following effect. The pressure in the internal space 10s (see FIG. 7) causes the first base fabric 31a between the two first connecting parts 34a-1 and 34a-1 to expand. At this time, the two first connecting parts 34a-2 and 34a-2 suppress the expansion of the first base fabric 31a between the two first connecting parts 34a-1 (the two first connecting parts 34a-2 perform a supplementary role, so to speak). This effect is generated by the multiple first connecting parts 34a. Therefore, the tension of the connecting thread 33 acts on the first connecting part 34a in a balanced manner, and the difference (variation) in tension between the multiple connecting threads 33 can be reduced. As a result, the expansion of the first base fabric 31a is further suppressed.

The size of the deviation D is, for example, 1/2 of the length of the line segment B1 (= interval A4). In this case, the first connecting parts 34a are arranged to form a diamond-shaped (including square) grid L when viewed from the thickness direction T. The shape of the grid L can be set in various ways. For example, in the example shown in FIG. 5, when viewed from the thickness direction T, two corners of the diamond-shaped grid L are 60° and the other two corners are 120°. For example, in the example shown in FIG. 6, when viewed from the thickness direction T, the grid L forms a square. Note that the size of the deviation D does not have to be 1/2 of the interval between the first connecting parts 34a-1 and 34a-1. The grid L may be a rectangle other than a diamond. The deviation D may also be 0. When viewed from the thickness direction T, the first connecting parts 34a do not have to be arranged in a staggered pattern.

As shown in FIG. 8, the recessed portion 35 is formed on the surface of the base material body 30, and is formed in the first base cloth 31a and the second base cloth 31b (see FIG. 7). The recessed portion 35 formed in the first base cloth 31a will be described below. The recessed portion 35 is provided at a position overlapping the first connecting portion 34a when viewed from the thickness direction T. The recessed portion 35 is recessed toward the internal space 10s side with respect to the first base cloth 31a around the recessed portion 35. The recessed portion 35 is formed as follows. When the pressure of the internal space 10s is within a predetermined range, the first base cloth 31a and the second base cloth 31b (see FIG. 7) try to move away from each other (try to expand). Then, tension is generated in the connecting thread 33, and the tension of the connecting thread 33 acts on the first connecting portion 34a. Therefore, the first base cloth 31a is recessed at the position of the first connecting portion 34a compared to the peripheral portion of the first connecting portion 34a. This recessed portion is the recessed portion 35. On the other hand, when the pressure in the internal space 10s is within a predetermined range, the first connecting portion 34a and the periphery of the first connecting portion 34a become flat or approximately flat. Therefore, even without a sensor to detect the pressure in the internal space 10s, the degree of recession of the recessed portion 35 can inform the user of the evacuation chute 1 of the magnitude of the pressure in the internal space 10s (whether it is within a predetermined range, etc.). In addition, when the sliding portion 11 (see FIG. 1) has the recessed portion 35, the frictional force between the sliding portion 11 and the evacuees can be reduced, making it easier for the evacuees to slide down.

As shown in FIG. 1, the bent portion 36 is a bent portion of the base material body 30. As shown in FIG. 9, the bent portion 36 is provided between the sliding portion 11 and the sliding portion side handrail portion 17a (boundary portion). Similarly, the bent portion 36 is provided between the sliding portion 11 and the upper bend portion 13 (see FIG. 2), between the sliding portion 11 and the lower bend portion 15 (see FIG. 10), between the upper bend portion 13 and the upper handrail portion 17b, and between the lower bend portion 15 and the lower handrail portion 17c. As shown in FIG. 9, the bent portion 36 includes a fold portion 36a and a crease portion 36b.

The folded portion 36a is a portion of the first base cloth 31a that is folded into the internal space 10s with respect to the surface of the base material body 30. The folded portion 36a preferably includes a folded fixing portion 36a1. The folded fixing portion 36a1 is a portion of the first base cloth 31a that constitutes the folded portion 36a, where the opposing first base cloths 31a are fixed to each other. The folded fixing portion 36a1 is a portion where the first base cloths 31a are fixed to each other, for example, with an adhesive. The folded fixing portion 36a1 may be provided on a part of the folded portion 36a, or may be provided on the entire folded portion 36a. The folded fixing portion 36a1 preferably includes an end portion of the folded portion 36a on the crease portion 36b side, and is preferably provided from the end portion on the crease portion 36b side toward the opposite side of the crease portion 36b. By providing the fold-in fixing portion 36a1, the shape of the bent portion 36 can be stabilized, the bending angle at the bent portion 36 can be stabilized, and the strength required for the bent portion 36 can be maintained for a long period of time. The fold portion 36b is a fold of the first base cloth 31a formed by folding the first base cloth 31a into the internal space 10s. The fold portion 36a and the fold portion 36b may be provided in the second base cloth 31b. The following describes the case where the fold portion 36a and the fold portion 36b are provided in the first base cloth 31a.

The folded outer portion 37 is formed outside the folded portion 36. More specifically, of both sides in the thickness direction T of the base material main body 30, the folded portion 36 is formed on one side, and the folded outer portion 37 is formed on the other side. When the folded portion 36 is provided on the first base cloth 31a, the second base cloth 31b on the outside of the folded portion 36 becomes the folded outer portion 37. The folded outer portion 37 is formed as follows. The tension of the connecting thread 33 connected to the folded outer portion 37 and the folded portion 36a is zero or is smaller than the tension of the connecting thread 33 in other parts. Therefore, the force against the force that the second base cloth 31b tries to expand (the force against the pressure of the internal space 10s) is absent or is smaller than the part other than the folded outer portion 37. Therefore, the second base fabric 31b constituting the folded outer portion 37 expands due to the pressure of the internal space 10s (see the folded outer portion 37 indicated by the two-dot chain line). More specifically, the second base fabric 31b constituting the folded outer portion 37 expands away from the first base fabric 31a compared to the second base fabric 31b not constituting the folded outer portion 37.

The side material 40 covers the entire side surface of the base material body 30 to seal the internal space 10s. The "side surface of the base material body 30" is the portion sandwiched between the end 31at (the end in the direction perpendicular to the thickness direction T) of the first base cloth 31a and the end 31bt (the same) of the second base cloth 31b. The connecting thread 33 may not be connected to the side material 40. For example, the side material 40 may be configured similarly to the first base cloth 31a and the first resin layer 32a. When the side material 40 includes a woven fabric or knitted fabric, the strength of the side material 40 can be improved compared to when it does not include these (for example, when it is configured only of resin). For example, the material (material) of the side material 40 may be the same as the material of the first resin layer 32a. When the material of the side material 40 is the same as the material of the first resin layer 32a, the cost of the evacuation chute 1 can be reduced.

The side material 40 is provided at the rear X2 end of the upper bent portion 13, the front X1 end of the lower bent portion 15, the upper Z1 end of the handrail portion 17, and the front-rear X end of the handrail portion 17, as shown in FIG. 1. As shown in FIG. 9, when the side material 40 is provided at the upper Z1 end of the handrail portion 17, the side material 40 constituting the handrail portion 17 protrudes (bulges) to the upper Z1 relative to the base material body 30 constituting the handrail portion 17. In this case, at the upper Z1 end of the handrail portion 17, the width of the handrail portion 17 in the thickness direction T narrows toward the upper Z1. This makes it easier for evacuees to grab the upper Z1 end of the handrail portion 17 with their hands or place their hands on it.

The fixing material 50 fixes the base body 30 with the bent portion 12 bent relative to the sliding portion 11. The fixing material 50 fixes the bent portion 36 of the base body 30 in a bent state. The fixing material 50 is, for example, attached to the base body 30, for example, welded. The fixing material 50 covers the fold portion 36b and is fixed (integrated) to the base body 30. The fixing material 50 is formed from a material (substance) having a strength sufficient to fix the base body 30 in a bent state. The fixing material 50 may be, for example, in the form of a tape or a sheet. The fixing material 50 is, for example, a woven fabric.

As shown in FIG. 3, the attachment portion 61 is a portion for attaching the chute body 10 to the vehicle C. The attachment portion 61 is, for example, a belt or the like, and is, for example, ring-shaped. The attachment portion 61 may be connected to the vehicle C via a rope (not shown) or the like. The attachment portion 61 may be connected directly to the vehicle C. The attachment portion 61 is provided on the chute body 10. The attachment portion 61 is preferably provided on a portion of the chute body 10 that is easy to attach to the vehicle C. The attachment portion 61 may be provided on, for example, the upper bend portion 13, or on, for example, the lower Z2 surface of the upper bend portion 13.

The supply and exhaust section 62 (supply and exhaust port) is a section that can communicate and close the internal space 10s (see FIG. 7) of the chute body 10 and the outside of the chute body 10. Gas outside the chute body 10 is supplied to the internal space 10s of the chute body 10 through the supply and exhaust section 62. The supply and exhaust section 62 may be provided at any position of the chute body 10. In the example shown in FIG. 1, the supply and exhaust section 62 is disposed on the surface of the lower handrail section 17c on the outer side Y2 in the width direction. In the example shown in FIG. 13, the supply and exhaust section 62 is disposed on the surface of the lower handrail section 217a on the outer side Y2 in the width direction. A gas supply device is connected to the supply and exhaust section 62 shown in FIG. 1. The gas supply device may be a pump operated by human power (manual, foot-operated, etc.), an electric pump (compressor), or a cylinder (inflator). The gas supply device may be a separate unit from the evacuation chute 1, or may be integrated (for example, built-in).

The sheet attachment/detachment section 63 is a section for removably attaching the sheet 64 to the chute body 10. The sheet attachment/detachment section 63 is, for example, a fastener, and may be a hook-and-loop fastener, a line fastener, or a snap fastener (snap button). The sheet attachment/detachment section 63 includes an upper sheet attachment/detachment section 63a (see FIG. 3) to which the upper Z1 portion of the sheet 64 is attached, and a lower sheet attachment/detachment section 63b to which the lower Z2 portion of the sheet 64 is attached (described below).

The sheet 64 is placed (laid or attached) on the upper surface of the chute body 10. The sheet 64 may be a protective sheet provided to protect the chute body 10 and improve its durability. The sheet 64 may be for adjusting (controlling) the frictional force between the evacuees and the evacuation chute 1. The sheet 64 may be for adjusting (controlling) the resistance (slide resistance performance) when the evacuees slide down. The sheet 64 covers the surface of the chute body 10 and covers the surface of the base body 30. The sheet 64 is detachably attached to the chute body 10 (base body 30). The sheet 64 includes, for example, a slide sheet 64a and an upper sheet 64b. Note that FIG. 1 illustrates a state in which the sheet 64 is not present, and the position of the sheet 64 is indicated by a two-dot chain line.

The sliding sheet 64a is placed on the upper surface of the sliding section 11. For example, the frictional force between the sliding sheet 64a and the evacuees may be adjusted according to the inclination angle of the sliding direction S with respect to the horizontal direction (the installation angle of the sliding section 11). More specifically, the height from the part where the upper bent section 13 shown in FIG. 3 is placed (the floor surface of the vehicle C) to the part where the lower bent section 15 is placed (the ground surface G) can be various heights depending on the site where the evacuation chute 1 is used. Therefore, the inclination angle of the sliding direction S with respect to the horizontal plane can be various values. Therefore, the frictional force between the sliding sheet 64a shown in FIG. 1 and the evacuees is adjusted to adjust the sliding resistance performance at the sliding section 11.

The material (raw material) of the sliding sheet 64a is set so that the coefficient of friction between the evacuee and the sliding sheet 64a is smaller than the coefficient of friction between the evacuee and the chute body 10. Specifically, for example, when the material of the first resin layer 32a (see FIG. 7) is polyvinyl chloride, the material of the sliding sheet 64a may be urethane or nylon. The material of the sliding sheet 64a may include, for example, a woven fabric, a plain weave (e.g., oxford fabric, etc.), or a woven fabric other than a plain weave (e.g., twill weave, satin weave, etc.). The material of the sliding sheet 64a may include a water-repellent material, or a waterproof material. The material of the sliding sheet 64a may include a material coated with rubber. The coated rubber may be, for example, acrylic, chloroprene, or chlorosulfonated polyethylene. When the material of the sliding sheet 64a is coated with chlorosulfonated polyethylene, it is stronger, less sticky, and more light-resistant than when it is coated with acrylic. Specifically, for example, the material of the sliding sheet 64a may include an Oxford fabric with 420 denier nylon threads as the warp and weft, coated with chlorosulfonated polyethylene. The material of the parts of the sheet 64 other than the sliding sheet 64a (such as the upper sheet 64b) may be the same as or different from the material of the sliding sheet 64a.

The upper sheet 64b is disposed on the upper surface of the upper bent portion 13. The upper sheet 64b may be provided integrally (continuously) with the sliding sheet 64a, or may be separate from the sliding sheet 64a. For example, when the sliding sheet 64a and the upper sheet 64b are provided integrally, the sheet 64 is attached to the chute body 10 as follows. The upper Z1 portion of the sheet 64, specifically, for example, the end of the upper sheet 64b opposite to the sliding sheet 64a, is detachably attached to the upper sheet attachment part 63a shown in FIG. 3. The upper sheet attachment part 63a is disposed, for example, on the lower Z2 surface of the upper bent portion 13. When the sheet 64 (see FIG. 1) is sandwiched between the floor surface of the vehicle C and the upper bent portion 13, the sheet 64 shown in FIG. 1 is prevented from coming off the chute body 10. The lower Z2 (front X1) portion of the seat 64, specifically, for example, the lower Z2 (front X1) end of the sliding seat 64a, is detachably attached to the seat lower detachable portion 63b. The seat lower detachable portion 63b is disposed, for example, in the lower Z2 portion of the sliding portion 11 (for example, near the lower Z2 end). The seat lower detachable portion 63b may be disposed in the lower bend portion 15. The seat 64 (lower seat) may be provided on the upper surface of the lower bend portion 15.

As shown in FIG. 3, the protective portion 65 is a member for protecting the lower Z2 portion of the chute body 10 from the ground G (e.g., stones, gravel, sand, etc.). The protective portion 65 is provided on the lower bent portion 15. The protective portion 65 may be a member (sheet-like member) that is attached (e.g., pasted) to the lower Z2 surface of the lower bent portion 15. For example, the material of the protective portion 65 may be stronger than the material of the base material 20. The protective portion 65 may be a member (cover) that covers the lower bent portion 15 (see FIG. 11). The protective portion 65 may be integrated with the sheet 64 shown in FIG. 1.

The height adjustment member 66 is a member for adjusting the inclination angle of the sliding section 11. The height adjustment member 66 is arranged on the Z2 lower side of the lower Z2 portion of the sliding section 11, for example, on the Z2 lower side of the lower bend section 15. The height adjustment member 66 is separate from the chute body 10. The height adjustment member 66 is, for example, approximately plate-shaped. The height adjustment member 66 may have the same structure as the base material 20, or may have a different structure from the base material 20. Multiple height adjustment members 66 may be provided, or none may be provided.

(When not in use)
When the evacuation chute 1 is not in use, the chute body 10 is in a state where there is almost no gas in the internal space 10s (see FIG. 7) (deflated state) and is in a folded state. If the structure of the height adjustment member 66 is the same as that of the base material 20, when the evacuation chute 1 is in the stored state, the height adjustment member 66 may be in a deflated state or in a folded state.

(Change to in-use state)
The evacuation chute 1 is changed from a non-use state to a use state as follows. When gas is supplied from the outside to the inside of the chute body 10 via the supply and exhaust part 62, the chute body 10 expands. Then, the internal space 10s (see FIG. 7) is pressurized until the pressure in the internal space 10s falls within a predetermined range. Then, the chute body 10 assumes a shape including the sliding part 11, the upper bent part 13, the lower bent part 15, and the handrail part 17. Next, the sheet 64 is attached to the chute body 10. Also, the mounting part 61 shown in FIG. 3 is directly or indirectly attached to the vehicle C. Also, if necessary, the inclination angle of the sliding part 11 is adjusted by the height adjustment member 66 shown in FIG. 1. As a result, the evacuation chute 1 is in a use state.

(Compared to a ladder)
When an evacuee evacuates from a vehicle C (see FIG. 3), an emergency ladder may be used. For example, when the vehicle C is a railroad vehicle, an evacuee may descend to the outside of the vehicle C using an emergency ladder installed at an opening such as a boarding door. In this case, the evacuee needs to assume a posture facing the vehicle C, that is, a posture in which the evacuee's back is facing the outside of the vehicle C (backward posture). This may cause anxiety to the evacuee, making the evacuee more cautious in evacuation actions and making it difficult to evacuate quickly. On the other hand, in this embodiment, the evacuee can slide down the evacuation chute 1 in a posture facing the outside of the vehicle C (forward posture). Therefore, the evacuee can be evacuated more quickly from the vehicle C than when an emergency ladder is used.

(effect)
The effects of the evacuation chute 1 shown in FIG.

(Effects of the First Invention)
The evacuation chute 1 is for allowing evacuees to slide down from inside the vehicle C (see FIG. 3) to the outside (outside the vehicle C).

[Configuration 1-1] The evacuation chute 1 comprises a base body 30 and a side material 40. The base body 30 forms an internal space 10s (see FIG. 7). The side material 40 seals the internal space 10s (see FIG. 7) by covering the entire side of the base body 30. As shown in FIG. 7, the base body 30 comprises a first base cloth 31a, a second base cloth 31b, a first resin layer 32a, a second resin layer 32b, and a connecting thread 33. The second base cloth 31b is a cloth arranged opposite the first base cloth 31a with a gap between the first base cloth 31a and the second base cloth 31b that forms the internal space 10s. The first resin layer 32a is provided on the first base cloth 31a. The second resin layer 32b is provided on the second base cloth 31b.

[Configuration 1-2] The connecting thread 33 tightly connects the first base fabric 31a and the second base fabric 31b.

[Configuration 1-3] As shown in FIG. 1, the evacuation chute 1 has a sliding section 11. The sliding section 11 is disposed at an angle to the horizontal direction and is a section for allowing evacuees to slide down. The sliding section 11 includes a base body 30.

In the above [Configuration 1-1], the base body 30 and the side material 40 seal the internal space 10s (see FIG. 7). Therefore, when a bending force is applied to the base body 30, the pressure in the internal space 10s tends to increase. Then, the portion of the base body 30 surrounding the portion to which the force is applied tends to expand. Here, as in the above [Configuration 1-2], in the base body 30 shown in FIG. 7, the first base cloth 31a and the second base cloth 31b are densely connected by the connecting thread 33. Therefore, when the base body 30 tends to expand, the tension of the connecting thread 33 acts on the base body 30, suppressing the expansion of the base body 30. As a result, the bending deformation of the base body 30 is suppressed. Therefore, it is easy to maintain (stabilize) the shape of the base body 30, and the rigidity of the base body 30 can be increased. This base body 30 is included in the sliding section 11 (see FIG. 1) for sliding evacuees down, as in the above [Configuration 1-3]. Therefore, when an evacuee slides down the sliding section 11 shown in FIG. 1 and a bending force is applied to the sliding section 11, the sliding section 11 is prevented from expanding, and bending deformation of the sliding section 11 is prevented. This makes it easier to maintain the shape of the sliding section 11, and the rigidity of the sliding section 11 can be increased. As a result, the rigidity of the evacuation chute 1 can be increased.

Since the expansion of the sliding section 11 is suppressed, the increase in sliding resistance caused by the expansion of the base body 30 can be suppressed. This allows evacuees to slide down the sliding section 11 smoothly.

Even if the connecting thread 33 shown in FIG. 7 is not provided, the rigidity of the base body 30 can be increased by increasing the pressure in the internal space 10s. On the other hand, since the evacuation chute 1 of this embodiment is provided with the connecting thread 33 of the above [Configuration 1-2], it is easier to maintain the shape of the sliding section 11 even if the pressure in the internal space 10s of the sliding section 11 is low, compared to when the connecting thread 33 is not provided. Therefore, compared to when the connecting thread 33 is not provided (conventional technology), the rigidity of the sliding section 11 (see FIG. 1) can be increased even if the pressure in the internal space 10s of the sliding section 11 is low. As a result, the rigidity of the evacuation chute 1 can be increased even if the pressure in the internal space 10s is low.

Even if the pressure in the internal space 10s is low, the rigidity of the evacuation chute 1 (see FIG. 1) can be increased, and as a result, the amount of gas injected into the internal space 10s can be reduced. This shortens the time from when gas injection begins until the evacuation chute 1 becomes usable. This allows evacuees to begin evacuation at an early stage. In addition, because the pressure in the internal space 10s can be lowered, the required strength (required pressure resistance) of each of the first base fabric 31a, the second base fabric 31b, the first resin layer 32a, and the second resin layer 32b can be reduced. This allows the costs involved (such as material costs) to be kept down.

Even if the connecting thread 33 is not provided, the rigidity of the base body 30 can be increased by increasing the dimension in the thickness direction T of the base body 30. On the other hand, since the evacuation chute 1 of this embodiment (see Figure 1) is provided with the connecting thread 33 of the above [Configuration 1-2], the shape of the base body 30 is easily maintained even if the dimension in the thickness direction T of the base body 30 is smaller (even if the base body 30 is thin) compared to when the connecting thread 33 is not provided. As a result, the evacuation chute 1 shown in Figure 1 can be made smaller.

(Effects of the second invention)
The evacuation chute 1 includes a bent portion 12. The bent portion 12 extends from an end of the sliding portion 11 so as to bend relative to the sliding portion 11.

[Configuration 2] The bending portion 12 includes a substrate body 30.

In the above [Configuration 2], the bent portion 12 includes the substrate body 30. Therefore, as in the above "Effects of the first invention," the rigidity of the bent portion 12 can be increased. As a result, effects according to the type of bent portion 12 can be obtained (see "Effects of the third invention" below).

(Effects of the Third Invention)
[Configuration 3-1] The bent portion 12 includes an upper bent portion 13, a lower bent portion 15, and a sliding portion side handrail portion 17a. The upper bent portion 13 extends from the upper side Z1 portion of the sliding portion 11 to the rear side X2, and includes a base material main body 30. The rear side X2 is the side facing from the outside to the inside of the vehicle C (see FIG. 3). The lower bent portion 15 extends from the lower side Z2 portion of the sliding portion 11 to the front side X1 or the lower side Z2, and includes a base material main body 30. The sliding portion side handrail portion 17a extends from the widthwise outer side Y2 portion of the sliding portion 11 to the upper side Z1, and includes a base material main body 30.

In the above [Configuration 3-1], since the upper bent portion 13 includes the base body 30, the rigidity of the upper bent portion 13 can be increased. Therefore, the upper bent portion 13 can support an evacuee who is sliding down the sliding section 11. Specifically, for example, when an evacuee stands on the upper bent portion 13, it is possible to prevent the evacuee from swaying or bouncing. In addition, since the rigidity of the upper bent portion 13 can be increased, the upper bent portion 13 can reliably support (e.g., suspend) the sliding section 11 from the upper side Z1.

In the above [Configuration 3-1], since the lower bend portion 15 includes the base body 30, the rigidity of the lower bend portion 15 can be increased. Therefore, the lower bend portion 15 can reliably support the sliding portion 11 from the lower side Z2. Furthermore, when the lower bend portion 15 extends from the sliding portion 11 to the front side X1, the following effect can be obtained (the case where it extends to the lower side Z2 will be described later). In this case, when an evacuee who has slid down the sliding portion 11 gets on the lower bend portion 15, the lower bend portion 15 is less likely to deform. Therefore, the lower bend portion 15 can reliably support the evacuee. Specifically, for example, when an evacuee gets on the lower bend portion 15, it is possible to prevent the evacuee from swaying or bouncing.

In the above [Configuration 3-1], the bent portion 12 is provided with the sliding section side handrail portion 17a, so the following effect can be obtained. In this case, since the sliding section side handrail portion 17a includes the base material body 30, the rigidity of the sliding section side handrail portion 17a can be increased. Therefore, when an evacuee sliding down the sliding section 11 comes into contact with the widthwise inner Y1 portion of the sliding section side handrail portion 17a, the sliding section side handrail portion 17a is less likely to deform. Therefore, it is possible to prevent the evacuee from falling off the sliding section 11 to the widthwise outer Y2. In addition, as in the above "Effect of the first invention", the pressure resistance required for the base material body 30 can be reduced, so a softer material can be selected as the material for the sliding section side handrail portion 17a. Therefore, it is easier for the evacuee to hold the sliding section side handrail portion 17a.

(Effects of the Fifth Invention)
[Configuration 5] The evacuation chute 1 includes a fold 36b and a fixing member 50 as shown in FIG. 9. The fold 36b is a portion formed by folding at least one of the first base cloth 31a and the second base cloth 31b into the internal space 10s. The fixing member 50 covers the fold 36b and is fixed to the base material body 30, thereby fixing the base material body 30 in a folded state. As shown in FIG. 1, the fixing member 50 fixes the base material body 30 with respect to the sliding section 11 in a state in which at least one of the sliding section side handrail section 17a (handrail section 17), the lower bend section 15, and the upper bend section 13 is bent.

The above [Configuration 5] provides the following effect. The base material body 30 constituting the portion bent relative to the sliding section 11 (hereinafter, "the sliding section side handrail section 17a, etc.") and the base material body 30 constituting the sliding section 11 can be constructed as a single continuous body. Therefore, the cost of the evacuation chute 1 can be reduced compared to when the base material body 30 constituting the sliding section 11 and the base material body 30 constituting the sliding section side handrail section 17a, etc. are separate.

When a force acts on the sliding section side handrail portion 17a etc., the bending angle θa (see FIG. 4) of the sliding section side handrail portion 17a etc. relative to the sliding section 11 tries to change. At this time, the base material body 30 tries to expand, and the pressure in the internal space 10s shown in FIG. 7 tries to increase. Then, the tension of the connecting thread 33 acts on the base material body 30. As a result, the tension of the connecting thread 33 becomes a resistance force against the bending force that tries to change the angle θa (see FIG. 4). Therefore, the bending angle θa of the sliding section side handrail portion 17a etc. relative to the sliding section 11 shown in FIG. 4 is easily maintained.

(Effects of the Sixth Invention)
7 constitutes the surface of the upper side Z1 of the sliding portion 11. A part (connecting thread 33a) of the multiple connecting threads 33 included in the sliding portion 11 is arranged at an angle with respect to the thickness direction T of the base body 30 so as to face the sliding direction S of the sliding portion 11 as it goes from the second base fabric 31b to the first base fabric 31a.

The above [Configuration 6] provides the following effect. In the sliding section 11, the evacuee slides down in the sliding direction S. Therefore, when the evacuee slides down on the first base cloth 31a, the first base cloth 31a tries to move in the sliding direction S relative to the second base cloth 31b. At this time, in the above [Configuration 6], tension is generated in the connecting thread 33a. Therefore, the tension in the connecting thread 33a becomes a resistance force against the movement of the first base cloth 31a in the sliding direction S relative to the second base cloth 31b. Therefore, the rigidity of the sliding section 11 can be further increased, and the rigidity of the evacuation chute 1 can be further increased.

(Effects of the Seventh Invention)
5, the connecting yarns 33 form connecting yarn rows 33L arranged to extend in the sliding direction S of the sliding portion 11 when viewed from the thickness direction T of the base body 30. The connecting yarn rows 33L are arranged at intervals from each other in a direction (width direction Y) perpendicular to each of the thickness direction T and the sliding direction S of the base body 30.

[Configuration 7] As shown in FIG. 7, each of the multiple connecting thread rows 33L is arranged in a zigzag pattern in the sliding direction S between the first base fabric 31a and the second base fabric 31b.

In the above [Configuration 7], two connecting threads 33 are connected to one first connecting portion 34a (connecting portion between the first base fabric 31a and the connecting thread 33), and two connecting threads 33 are connected to one second connecting portion 34b (connecting portion between the second base fabric 31b and the connecting thread 33). Therefore, the force acting on the connecting thread 33 can be dispersed more than when only one connecting thread 33 is connected to one first connecting portion 34a or when only one connecting thread 33 is connected to one second connecting portion 34b. Therefore, the stretching of the connecting thread 33 can be suppressed, and the expansion of the base material body 30 can be further suppressed, and the rigidity of the base material body 30 can be further increased.

(Effects of the Eighth Invention)
The evacuation chute 1 (see FIG. 1) has at least one of the following [Configuration 8-1] and [Configuration 8-2]. [Configuration 8-1] As shown in FIG. 5, the first connecting portions 34a between the first base fabric 31a and the connecting thread 33 are arranged in a staggered pattern when viewed from the thickness direction T of the base material body 30. [Configuration 8-2] The second connecting portions 34b between the second base fabric 31b (see FIG. 7) and the connecting thread 33 are arranged in a staggered pattern when viewed from the thickness direction T of the base material body 30.

The above [Configuration 8-1] provides the following effects. Compared to a case where the first connecting portions 34a are not arranged in a staggered pattern when viewed from the thickness direction T of the base material body 30, the tension of the connecting threads 33 can be applied to the first base cloth 31a in a balanced manner (as described above in detail). As a result, the first base cloth 31a is less likely to bulge. This makes it possible to further increase the rigidity of the base material body 30.

The arrangement of the first connecting parts 34a can increase the rigidity of the substrate body 30, so that the distance A4 between the first connecting parts 34a-1 and 34a-1 in the sliding direction S can be increased while maintaining the rigidity of the substrate body 30. When the distance A4 is increased, the number of first connecting parts 34a per given area can be reduced. As a result, the manufacturing cost of the substrate body 30 can be reduced, and the manufacturing speed of the substrate body 30 can be increased. As with the effect of the above [Configuration 8-1], the above [Configuration 8-2] can also increase the rigidity of the substrate body 30 and increase the distance between the second connecting parts 34b in the sliding direction S.

(Effect of the ninth aspect of the invention)
1, the evacuation chute 1 includes a sheet 64. The sheet 64 covers the surface of the base body 30 and is attached to the base body 30 in a detachable manner.

In the above [Configuration 9], the sheet 64 covers the surface of the base body 30. This may protect the surface of the base body 30, and may also allow the coefficient of friction between the base body 30 and the evacuees to be adjusted. Also, in the above [Configuration 9], the sheet 64 is detachable from the base body 30. This may allow the sheet 64 to be easily replaced when the sheet 64 is damaged, and may also allow the coefficient of friction between the base body 30 and the evacuees to be easily changed.

Second Embodiment
The differences between the evacuation chute 201 of the second embodiment and the first embodiment will be described with reference to Figures 11 to 14. Note that the description of the common features between the evacuation chute 201 and the first embodiment will be omitted. The parts of the evacuation chute 201 that are given the same reference numerals as those of the first embodiment are the common features with the first embodiment. The same applies to the description of the third embodiment described later, where the description of the common features will be omitted.

In the example shown in FIG. 1, the handrail section 17 includes a sliding section side handrail section 17a, an upper handrail section 17b, and a lower handrail section 17c. However, at least some of these may not be provided. Specifically, as shown in FIG. 11, in this embodiment, the handrail section 17 includes a sliding section side handrail section 217a, and does not include the upper handrail section 17b and the lower handrail section 17c shown in FIG. 1.

In the example shown in FIG. 4, the angle θa (defined above) of the sliding section side handrail portion 17a is approximately 90°. However, the angle θa can be changed in various ways (the same goes for angles θb and θc). Specifically, as shown in FIG. 14, in this embodiment, the angle θa of the sliding section side handrail portion 217a is less than 90°, for example, approximately 45°.

Third Embodiment
15 to 17, the differences between the evacuation chute 301 of the third embodiment and the second embodiment will be described.

In the example shown in FIG. 12, the mounting portion 61 was, for example, belt-shaped. On the other hand, the mounting portion 61 may have any configuration as long as it can be attached to the vehicle C (see FIG. 13). Specifically, as shown in FIG. 15, in this embodiment, the mounting portion 361 is provided integrally with the upper bent portion 13. The mounting portion 361 includes the base material main body 30, and more specifically, includes the base material main body 30 and the side material 40. The mounting portion 361 protrudes from the upper bent portion 13 to the outside Y2 in the width direction, and protrudes further to the outside Y2 in the width direction than the sliding portion 11. The mounting portion 361 is attached to a structure of the vehicle C (for example, a wall, a door, etc.). The mounting portion 361 may be hooked or clamped to the structure of the vehicle C, for example.

Fourth Embodiment
18 to 22, the differences between the evacuation chute 401 of the fourth embodiment and the first embodiment will be described. The downward bend portion 15 of the evacuation chute 401 shown in Fig. 18 includes a leg portion 419. The evacuation chute 401 includes an upper cloth 471, a lower cloth 472, a cushioning material attachable/detachable portion 473, and a cushioning material 474. The evacuation chute 401 does not need to include a lower handrail portion 17c (see Fig. 1).

The legs 419 are for easily lowering evacuees from the evacuation chute 401. The legs 419 are for easily allowing evacuees sitting on the lower Z2 portion of the sliding section 11 to stand up. As shown in FIG. 19, the legs 419 extend from the lower Z2 portion (front X1 portion) of the sliding section 11 to the lower Z2. The vertical dimension of the legs 419 is set to a dimension that allows evacuees sitting on the lower Z2 portion of the sliding section 11 to easily descend from the sliding section 11. For example, the height H419 from the lower Z2 end of the legs 419 to the lower Z2 end of the upper surface 11a of the sliding section 11 is the same as the height from the bottom surface of a general seat to the seat surface. The height H419 is specifically set to a dimension that allows evacuees from average junior high school students to adults to stand up smoothly. More specifically, the height H419 is 390 to 450 mm, for example. The leg 419 comprises a leg main body 419a and a leg support 419b.

The leg body 419a is bent downward Z2 relative to the sliding section 11. The bending direction of the leg body 419a relative to the sliding section 11 is opposite to the bending direction of the downward bending section 15 (see FIG. 3) relative to the sliding section 11. The leg body 419a extends downward Z2 from the lower Z2 portion of the sliding section 11. The leg body 419a is arranged to extend in both the width direction Y and the up-down direction Z (see FIG. 18). A bend 36 is provided between the leg body 419a and the sliding section 11 (at the boundary).

The leg support 419b is a portion for improving the stability of the leg 419 against the ground G. The leg support 419b is a portion that resists a force received from the sliding section 11 in a direction that tends to cause the leg 419 to fall to the rear side X2. The leg support 419b protrudes from the lower Z2 portion (at least the lower Z2 portion) of the leg main body 419a to the rear side X2 (back side). For example, the leg support 419b extends from the portion from the lower Z2 end to the upper Z1 end (or approximately the upper Z1 end) of the leg main body 419a to the rear side X2. As shown in FIG. 18, the leg support 419b extends from the widthwise outer Y2 portion (for example, both sides of the widthwise outer Y2) of the leg main body 419a to the rear side X2. The leg support portion 419b constitutes the width direction outer Y2 portion (side wall) of the leg 419. The leg support portion 419b is arranged to extend in the front-rear direction X and the up-down direction Z. As shown in FIG. 22, a bent portion 36 is provided between the leg support portion 419b and the leg main body portion 419a (at the boundary portion). The angle θd of bending of the leg support portion 419b with respect to the leg main body portion 419a may be 90° or about 90°. The angle θd is an angle formed by a vector in the width direction outer Y2 direction and a vector in the direction in which the leg support portion 419b protrudes from the leg main body portion 419a as viewed from the up-down direction Z. The dimension of the leg main body portion 419a in the front-rear direction X is set so as to ensure the stability of the leg 419. The dimension of the leg body 419a in the front-rear direction X is, for example, the same as or approximately the same as the amount of protrusion of the sliding section side handrail 17a relative to the sliding section 11 shown in FIG. 18.

The upper cloth 471 is a cloth that has slipperiness (i.e., slippery) that allows evacuees to slide down the sliding section 11 appropriately. The upper cloth 471 is provided on the upper Z1 portion (rear X2 portion) of the sliding section upper surface 11a of the sliding section 11. For example, the upper cloth 471 may be provided on at least the upper Z1 end of the sliding section upper surface 11a. For example, the position of the lower Z2 end of the upper cloth 471 may be the center or approximately the center in the sliding direction S of the sliding section upper surface 11a, or may be above the center Z1, or may be below the center Z2. The upper cloth 471 may be a sheet 64 (more specifically, a sliding sheet 64a) that is detachable from the chute body 10. The upper cloth 471 may be a cloth that is fixed (e.g., attached) to the sliding section 11. The material of the upper cloth 471 is, for example, nylon (similar to the description of the sliding sheet 64a).

The lower cloth 472 has a slipperiness that allows the sliding evacuees to slow down (i.e., it is not slippery). The slipperiness of the lower cloth 472 is lower than that of the upper cloth 471. More specifically, the coefficient of friction between a certain slider and the lower cloth 472 is greater than the coefficient of friction between this slider and the upper cloth 471. The lower cloth 472 is provided on the sliding section upper surface 11a in the Z2 portion (the front X1 portion, downstream of the sliding direction S) below the portion where the upper cloth 471 is provided. The lower cloth 472 may be the sheet 64 or the sliding sheet 64a. The lower cloth 472 may be a cloth fixed (for example, attached) to the sliding section 11. The lower cloth 472 may be the base material main body 30 (more specifically, the first base cloth 31a (see FIG. 7)). The lower cloth 472 and the upper cloth 471 may be separate or integrated (one continuous piece of cloth). The lower cloth 472 and the upper cloth 471 may be overlapped so that the upper cloth 471 covers the lower cloth 472. The upper cloth 471 and the lower cloth 472 may be arranged so as to be aligned in the sliding direction S (not shown). The material of the lower cloth 472 is a material that is less slippery than the upper cloth 471. The material of the lower cloth 472 may include, for example, vinyl chloride, or may be a tarpaulin containing vinyl chloride (such as the same as the first base cloth 31a and the first resin layer 32a shown in FIG. 7). Note that the upper cloth 471 may be provided without the lower cloth 472.

The cushioning attachment/detachment section 473 is a section for attaching the cushioning material 474 detachably to the chute body 10 (e.g., the leg 419). The cushioning attachment/detachment section 473 (and the cushioning attachment section 474b described later) is, for example, a fastener, and may be a hook-and-loop fastener, a line fastener, or a snap fastener (snap button). For example, the cushioning attachment/detachment section 473 is provided (fixed) to the leg support section 419b. Specifically, for example, as shown in FIG. 22, the cushioning attachment/detachment section 473 may be provided on the surface of the leg support section 419b on the outer side Y2 in the width direction, on the surface of the leg support section 419b on the inner side Y1 in the width direction, or on the leg body section 419a (not shown).

The cushioning material 474 (leg cushioning material) may be a member for preventing damage to the chute body 10 caused by the ground G (e.g., gravel) shown in FIG. 19. The cushioning material 474 may be a member for stabilizing the feet of an evacuee when the evacuee descends (stands up) from the sliding section 11. The cushioning material 474 includes a cushioning material main body portion 474a and a cushioning material attachment portion 474b.

The cushioning material main body 474a is disposed on the lower side Z2 of the leg 419 and on the upper side Z1 of the ground G. In this case, the cushioning material main body 474a can prevent the chute body 10 from being damaged. The cushioning material main body 474a is disposed on the front side X1 of the lower side Z2 end of the leg 419, and is disposed so as to extend from the lower side Z2 end of the leg 419 to the front side X1. In this case, the cushioning material main body 474a can stabilize the feet of the evacuees. For example, the cushioning material main body 474a is substantially plate-shaped (see FIG. 18). For example, the cushioning material main body 474a may include a bag and a cushioning material (such as low-resilience urethane) disposed inside the bag. The bag of the cushioning material main body 474a is made of tarpaulin, for example.

Specifically, the cushioning body 474a may be disposed as follows, for example. As shown in FIG. 22, the dimension of the cushioning body 474a in the width direction Y may be the same or approximately the same as the dimension of the leg 419 in the width direction Y (for example, 600 mm, etc.). The cushioning body 474a may be provided from one end (right end) to the other end (left end) of the width direction outer side Y2 of the leg 419. The cushioning body 474a may be provided at least from the end of the rear side X2 of the leg 419 to the end of the front side X1 of the leg 419. The dimension of the cushioning body 474a in the front-rear direction X (e.g., 300 mm) of the part protruding from the leg 419 to the front side X1 may be larger, smaller, or equal to the dimension of the part located directly below the leg 419 in the front-rear direction X (e.g., 200 mm). The dimension (thickness) in the vertical direction Z of the cushioning material main body 474a shown in FIG. 18 is appropriately set according to the required cushioning properties (e.g., 30 mm). The cushioning material main body 474a may also be used as the height adjustment material 66 (see FIG. 1). The cushioning material main body 474a and the height adjustment material 66 may be stacked in the vertical direction Z. The cushioning material main body 474a may be disposed between the height adjustment material 66 and the leg 419. The cushioning material main body 474a may be disposed between the ground G and the height adjustment material 66 to protect the height adjustment material 66 from damage.

The cushion material attachment portion 474b is attached to the chute body 10. The cushion material attachment portion 474b is detachably attached to the cushion material attachment/detachment portion 473, and is detachably attached to the chute body 10 (more specifically, the leg portion 419). The cushion material attachment portion 474b is attached to the cushion material main body portion 474a, and protrudes, for example, from the cushion material main body portion 474a to the upper side Z1.

(Effect of the third aspect of the invention (when the lower bent portion 15 extends downward Z2 from the sliding portion 11))
[Configuration 3-2] The lower bent portion 15 extends from the lower side Z2 portion of the sliding portion 11 to the lower side Z2 and includes a substrate body 30.

The lower bend 15 in the above [Configuration 3-2] includes the base body 30. This increases the rigidity of the lower bend 15 (see "Effects of the First Invention" above). In addition, in the above [Configuration 3-2], the lower bend 15 (leg 419) including the base body 30 extends from the lower Z2 portion of the sliding section 11 to the lower side Z2. This allows an evacuee sitting on the lower Z2 portion of the sliding section 11 to be reliably supported from the lower side Z2. As a result, the posture of an evacuee sitting on the lower Z2 portion of the sliding section 11 is stabilized, allowing the evacuee to easily stand up from the sliding section 11.

(Effects of the Fourth Invention)
The lower bend portion 15 includes a leg portion 419. The leg portion 419 includes a leg body portion 419a and a leg support portion 419b. The leg body portion 419a extends from the lower side Z2 portion of the sliding portion 11 to the lower side Z2.

[Configuration 4] The leg support portion 419b extends from the lower side Z2 end of the leg main body portion 419a to the rear side X2.

When an evacuee slides down the sliding section 11, a force that tends to cause the legs 419 to tip to the rear side X2 acts on the legs 419 from the sliding section 11. More specifically, in the above [Configuration 3-2], the lower bend 15 (legs 419) extends from the lower Z2 portion (i.e. the front X1 portion) of the sliding section 11 to the lower side Z2. Therefore, the sliding section 11 is positioned further rearward X2 than the legs 419. Therefore, the evacuee slides down the sliding section 11 at a position further rearward X2 than the legs 419. At this time, a force that tends to cause the legs 419 to tip to the rear side X2 acts on the legs 419 from the sliding section 11. Therefore, the legs 419 are provided with the leg support portions 419b of the above [Configuration 4]. Therefore, the leg support portion 419b can resist the force that the leg support portion 419b receives from the sliding portion 11 in a direction that tends to cause the leg portion 419 to fall toward the rear side X2. This prevents the leg portion 419 from falling toward the rear side X2. As a result, the evacuation chute 401 can be stabilized.

(Effect of the Tenth Invention)
[Configuration 10] The evacuation chute 401 includes an upper cloth 471 and a lower cloth 472. The upper cloth 471 is provided on the upper Z1 portion of the sliding section upper surface 11a of the sliding section 11. The lower cloth 472 is provided on the lower Z2 portion of the sliding section upper surface 11a below the portion where the upper cloth 471 is provided. The slipperiness of the lower cloth 472 is lower than that of the upper cloth 471.

The above [Configuration 10] provides the following effects. After sliding down the upper cloth 471, the evacuee slides down the lower cloth 472. At this time, the lower cloth 472 can decelerate the evacuee. Therefore, the evacuee can reach the lower Z2 portion of the sliding section 11 while the lower cloth 472 has decelerated the evacuee. Therefore, the evacuee can easily descend from the sliding section 11.

(Modification)
Each of the above embodiments may be modified in various ways. For example, components of different embodiments may be combined with each other. For example, the arrangement or shape of each component may be changed. For example, the number of components may be changed, or some of the components may not be provided. For example, the components may be fixed or connected directly or indirectly. For example, what has been described as multiple different members or parts may be treated as one member or part. For example, what has been described as one member or part may be provided as multiple different members or parts.

Specifically, for example, the attachment portion 361 shown in FIG. 15 may be provided on the evacuation chute 201 having the sliding section side handrail portion 217a shown in FIG. 14. For example, at least one of the upper bend portion 13 and the lower bend portion 15 shown in FIG. 1 may not be provided, and at least a part of the handrail portion 17 may not be provided. In the above embodiment, the sliding section 11, the upper bend portion 13, the lower bend portion 15, and the handrail portion 17 are integrally formed by the continuous base material 20. On the other hand, some of the sliding section 11, the upper bend portion 13, the lower bend portion 15, and the handrail portion 17 may be separate from the other parts. Both the lower bend portion 15 (deceleration portion) extending from the lower side Z2 portion of the sliding section 11 to the front side X1 and the lower bend portion 15 (leg portion 419) extending from the lower side Z2 portion of the sliding section 11 to the front side X1 shown in FIG. 18 may be provided.

1, 201, 301, 401 Evacuation chute 10 Chute body (expansion member)
10s Internal space 11 Slide section (plate-shaped section)
11a Upper surface of sliding section 12 Bend section 13 Upper bend section 15 Lower bend section 17 Handrail section 30 Base material main body 31a First base fabric 31b Second base fabric 32a First resin layer 32b Second resin layer 33 Connecting thread 33L Connecting thread row 34a First connecting section (connecting section)
34b Second connecting part (connecting part)
36b Folding portion 40 Side material 50 Fixing material 64 Seat 419 Leg 419a Leg body 419b Leg support 471 Upper cloth 472 Lower cloth C Vehicle S Sliding direction (specific direction)
X1 Front X2 Rear

Claims (4)

An expansion member used in an inflated state,
A substrate body having an internal space;
A side surface material that covers the entire side surface of the base body to seal the internal space;
A fixing material;
Equipped with
The substrate body is
A plate-shaped portion,
A bending portion extending from an end of the plate-shaped portion so as to bend relative to the plate-shaped portion;
A fold portion;
Equipped with
The plate-shaped portion and the bent portion are
A first base fabric which is a cloth;
A second base fabric is a fabric arranged opposite to the first base fabric with a gap between the first base fabric and the second base fabric that forms the internal space;
A first resin layer provided on the first base fabric;
A second resin layer provided on the second base fabric;
A connecting thread densely connecting the first base fabric and the second base fabric when the base body is inflated ;
Equipped with
The fold portion is formed by folding at least one of the first base fabric and the second base fabric into the internal space,
The fixing material covers the fold portion and is fixed to the base body, thereby causing the bent portion to bend relative to the plate-like portion and fixing the base body in a bent state;
The first base fabric constitutes an upper surface of the plate-shaped portion,
a part of the connecting yarns included in the plate-like portion is arranged at an incline with respect to the thickness direction of the base body so as to extend in a specific direction perpendicular to the thickness direction of the plate-like portion from the second base fabric toward the first base fabric;
A connection portion between at least one of the first base fabric and the second base fabric and the connecting yarn is arranged in a staggered manner when viewed from the thickness direction of the base body.
Expansion member. An expansion member used in an inflated state,
A substrate body having an internal space;
A side surface material that covers the entire side surface of the base body to seal the internal space;
A fixing material;
Equipped with
The substrate body is
A plate-shaped portion,
A bending portion extending from an end of the plate-shaped portion so as to bend relative to the plate-shaped portion;
A fold portion;
Equipped with
The plate-shaped portion and the bent portion are
A first base fabric which is a cloth;
A second base fabric is a fabric arranged opposite to the first base fabric with a gap between the first base fabric and the second base fabric that forms the internal space;
A first resin layer provided on the first base fabric;
A second resin layer provided on the second base fabric;
A connecting thread densely connecting the first base fabric and the second base fabric when the base body is inflated ;
Equipped with
The fold portion is formed by folding at least one of the first base fabric and the second base fabric into the internal space,
The fixing material covers the fold portion and is fixed to the base body, thereby causing the bent portion to bend relative to the plate-like portion and fixing the base body in a bent state;
the connecting yarns form a row of connecting yarns that are arranged so as to extend in a specific direction perpendicular to the thickness direction of the plate-like portion when viewed from the thickness direction of the base body,
the connecting yarn rows are arranged at intervals from one another in directions perpendicular to the thickness direction of the base body and the specific direction,
Each of the plurality of connecting yarn rows is disposed in a zigzag pattern in the specific direction between the first base fabric and the second base fabric,
A connection portion between at least one of the first base fabric and the second base fabric and the connecting yarn is arranged in a staggered manner when viewed from the thickness direction of the base body.
Expansion member. An expansion member used in an inflated state,
A substrate body having an internal space;
A side surface material that covers the entire side surface of the base body to seal the internal space;
A fixing material;
Equipped with
The substrate body is
A plate-shaped portion,
A bending portion extending from an end of the plate-shaped portion so as to bend relative to the plate-shaped portion;
A fold portion;
Equipped with
The plate-shaped portion and the bent portion are
A first base fabric which is a cloth;
A second base fabric is a fabric arranged opposite to the first base fabric with a gap between the first base fabric and the second base fabric that forms the internal space;
A first resin layer provided on the first base fabric;
A second resin layer provided on the second base fabric;
A connecting thread densely connecting the first base fabric and the second base fabric;
a first connecting portion which is a connecting portion between the first base fabric and the connecting yarn;
a second connecting portion which is a connecting portion between the second base fabric and the connecting yarn;
Equipped with
The fold portion is formed by folding at least one of the first base fabric and the second base fabric into the internal space,
The fixing material covers the fold portion and is fixed to the base body, thereby causing the bent portion to bend relative to the plate-like portion and fixing the base body in a bent state;
The first base fabric constitutes an upper surface of the plate-shaped portion,
a part of the connecting yarns included in the plate-like portion is arranged at an incline with respect to the thickness direction of the base body so as to extend in a specific direction perpendicular to the thickness direction of the plate-like portion from the second base fabric toward the first base fabric;
the first connecting portions and the second connecting portions are arranged in a staggered manner when viewed in a thickness direction of the base body,
A portion of the plurality of first connecting portions and a portion of the plurality of second connecting portions are arranged on the same straight line extending in the specific direction when viewed from the thickness direction of the base body, and are arranged at positions not overlapping with each other.
Expansion member. An expansion member used in an inflated state,
A substrate body having an internal space;
A side surface material that covers the entire side surface of the base body to seal the internal space;
A fixing material;
Equipped with
The substrate body is
A plate-shaped portion,
A bending portion extending from an end of the plate-shaped portion so as to bend relative to the plate-shaped portion;
A fold portion;
Equipped with
The plate-shaped portion and the bent portion are
A first base fabric which is a cloth;
A second base fabric is a fabric arranged opposite to the first base fabric with a gap between the first base fabric and the second base fabric that forms the internal space;
A first resin layer provided on the first base fabric;
A second resin layer provided on the second base fabric;
A connecting thread densely connecting the first base fabric and the second base fabric;
a first connecting portion which is a connecting portion between the first base fabric and the connecting yarn;
a second connecting portion which is a connecting portion between the second base fabric and the connecting yarn;
Equipped with
The fold portion is formed by folding at least one of the first base fabric and the second base fabric into the internal space,
The fixing material covers the fold portion and is fixed to the base body, thereby causing the bent portion to bend relative to the plate-like portion and fixing the base body in a bent state;
the connecting yarns form a row of connecting yarns that is arranged so as to extend in a specific direction perpendicular to the thickness direction of the plate-like portion when viewed from the thickness direction of the base body,
the connecting yarn rows are arranged at intervals from one another in directions perpendicular to the thickness direction of the base body and the specific direction,
Each of the plurality of connecting yarn rows is disposed in a zigzag pattern in the specific direction between the first base fabric and the second base fabric,
the first connecting portions and the second connecting portions are arranged in a staggered manner when viewed in a thickness direction of the base body,
A portion of the plurality of first connecting portions and a portion of the plurality of second connecting portions are arranged on the same straight line extending in the specific direction when viewed from the thickness direction of the base body, and are arranged at positions not overlapping with each other.
Expansion member.

Images