JP2020006046A - Structure for seat support - Google Patents

Abstract

To avoid or prevent excessive stress from being applied to a horizontal member due to a displacement of the horizontal member in a constructed support rail for supporting a seat by connecting a plurality of horizontal members.SOLUTION: A structure for seat support includes: a support rail for supporting a seat, wherein a plurality of horizontal members 31 extending in a predetermined direction and having a hollow space at an end part are connected with an interval; a fitting part 51 inserted into both the end part of one adjacent horizontal member 31 and the end part of the other horizontal member 31 to fit the end parts; and a joint member 5 having a spacer 52 which exists between both fitting parts 51, and is separated from an end face 313 of one or both of the horizontal members 31 while being inserted into a gap between the end face 313 and the end face 313 of both the horizontal members 31, wherein the thickness of the spacer is thinner than the width of the gap.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a structure for supporting a seat provided in, for example, a stadium or the like.

  As a specific example of a structure in which a large number of seats are installed in a stadium or the like, as disclosed in the following Patent Document, a leg serving as a support is fixed to a base floor serving as a base, and the leg extends in the width direction. A mode in which a support rail (or a beam) is suspended and seats are arranged along the support rail can be given.

  In a large-scale stadium or the like, the number of seats inevitably increases, and the support rails that support those seats also become long. The long support rail is configured by connecting a plurality of horizontal members extending in a predetermined direction.

  The horizontal member is usually produced by extruding a metal material such as an aluminum alloy and cutting the metal material into an appropriate length. The length of the metal horizontal member expands and contracts with a change in temperature. If the end surfaces of the adjacent horizontal members are brought into close contact with each other, an excessive stress may act on the horizontal members when the expansion or contraction or other displacement of the horizontal members occurs, which may cause damage to the horizontal members.

JP 2012-239604 A

  The present invention relates to a support rail for supporting a seat by connecting a plurality of transverse members, and avoids or suppresses an excessive stress from acting on the transverse members due to displacement of the transverse members. That is the intended purpose.

  In the present invention, a support rail for supporting a seat, in which a plurality of transverse members extending in a predetermined direction and having a hollow end portion are connected with a gap, and an end portion of one adjacent transverse member And a fitting portion inserted into and fitted to both ends of the other horizontal member, and a thickness between the two fitting portions while being inserted into a gap between the end surfaces of the two horizontal members. And a joint member having a spacer which is thinner than the width of the gap and is spaced apart from the end surface of one or both of the transverse members.

  In addition, an engaging portion that engages with the support rail is provided on a seat that is supported by the support rail or a support that supports the support rail, and one end of one horizontal member is provided. When the engaging portion of any of the seats or the support members is engaged so as to straddle both the end portion of another transverse member adjacent thereto and the other end portion of the same transverse member, It is preferable that the length of the transverse member is set so that the engaging portion of any seat or support member does not engage so as to straddle both ends of another adjacent transverse member. .

  Further, in the present invention, a support rail for supporting a seat to which a plurality of transverse members extending in a predetermined direction are connected with a gap therebetween, and a seat or a support rail supported by the support rail are supported. An engaging portion that is provided on the support and engages with the support rail, and is provided at both one end of one cross member and the end of another cross member adjacent thereto. When the engaging portion of any of the seats or the supporting members is engaged so as to straddle, the straddle straddles both the other end of the same lateral member and the end of another lateral member adjacent thereto. The structure for supporting the seat is configured such that the length of the transverse member is set such that the engaging portion of any seat or support does not engage.

  The gap between the end surfaces of the horizontal members is set, for example, to a size between 3 mm and 3.5 mm.

  Furthermore, the insertion portion which enters the gap between the end surfaces of the cross members and abuts or approaches at least a part of the end surfaces of the cross members, and from the insertion portion along the extending direction of the cross member. If the structure includes a cover member having an exterior portion that abuts or approaches at least a part of the outer periphery of the horizontal member that extends and intersects the end surface of the horizontal member, the adjacent horizontal member and the horizontal member Can be suitably covered with the cover member.

  It is preferable that the insertion portion of the cover member is softer than the spacer of the joint member.

  When two adjacent supports among the supports that support the support rail are fixed to separate concrete blocks, one of the two supports is engaged with the cross member, and the other is engaged. It is preferable that the horizontal member is cut off and separate.

  In addition, an intermediate bridge which is separated from and separate from both the cross members between one of the two support members and the other. Materials can also be interposed.

  According to the present invention, in a construction in which a plurality of transverse members are connected to form a support rail for supporting a seat, an excessive stress is prevented from acting on the transverse members due to displacement of the transverse members or Can be suppressed.

1 is a perspective view showing a seat support structure and a seat according to an embodiment of the present invention. FIG. 3 is a perspective view showing a support rail and a cover member of the seat support structure of the embodiment. FIG. 3 is an exploded perspective view showing a support rail and a cover member of the seat support structure of the embodiment. FIG. 3 is an exploded perspective view showing a support rail and a joint member of the seat support structure of the embodiment. FIG. 2 is a front view showing the seat supporting structure and the seat according to the embodiment. FIG. 3 is a side view showing the seat supporting structure and the seat according to the embodiment. The side view which shows the cover member of the embodiment. The bottom view showing the cover member of the embodiment. FIG. 4 is a side sectional view showing the support rail, the cover member, and the joint member of the embodiment. FIG. 3 is a front sectional view showing the support rail, the cover member, and the joint member of the embodiment. The top view which shows the support rail and cover member of the embodiment. FIG. 10 is a perspective view showing a support rail and a joint member of a seat support structure according to a modified example of the present invention. Sectional drawing which shows the support rail and joint member of the modification.

  An embodiment of the present invention will be described with reference to the drawings. 1, 5 and 6 show a seat support structure of the present embodiment and a seat 6 provided using the same. The structure for supporting a seat according to the present embodiment includes a leg 2 serving as a support fixed to a step floor 1 serving as a base (or a skeleton), and a support rail 3 supported by the leg 2 and extending in a predetermined direction, that is, a width direction. And a cover member 4 attached to a seam of the horizontal member 31 constituting the support rail 3, that is, a gap 32 between the adjacent horizontal members 31 and covering the same. Then, a plurality of seats 6 are arranged along the support rails 3, each of which is supported by the support rails 3.

  Previously, the corrugated floor 1 was constructed by casting concrete by cast-in-place, but recently, it is constructed by combining a plurality of precast concrete blocks 11 previously produced in a factory or the like on-site. Things are also increasing. As shown in FIG. 5, when the concrete floor 11 is formed by joining a plurality of concrete blocks 11, a joint material 12 between the concrete blocks 11 is provided with an elastically deformable elastic material such as a sealing material or an adhesive. Be laid.

  The leg 2 is fixed to the upright front surface 13 or the horizontal upward surface 14 of the corrugated floor 1 using a concrete plug, an anchor, or the like, and is engaged with the support rail 3 to hold it. There is provided a joining portion 23 and a connecting portion 22 extending from the base portion 21 and connected to the engaging portion 23 to rigidly connect the two. In the illustrated example, the base 21 of the leg 2 is fixed to the front surface 13 of the floor 1, and the leg 2 is raised from the upper surface 14 of the floor 1, taking into account the ease of cleaning work. That's it. There are a plurality of legs 2 that support the support rail 3 at a plurality of locations. In other words, the support rail 3 is laid across the plurality of legs 2.

  The seat 6 includes a seat 61 on which the buttocks of a seated person are placed, a backrest 62 on which the lumbar or back of the person rests, and a seat 61 and a backrest 62 on both left and right sides of the seat 61 and the backrest 62. And a support rod 63 for supporting these while connecting them. The seat 61 is rotatable relative to the backrest 62, and the seat 61 is flipped up as shown in FIGS. 1 and 5 to secure a passage, and as shown in FIG. It is possible to selectively take a state in which the user can take a seat by tilting the front of the vehicle forward and setting a horizontal posture. At the lower end of the support rod 63, an engagement portion 64 that engages with and holds the support rail 3 is provided.

  The support rail 3 is formed by connecting a plurality of horizontal members 31 extending in the width direction. Each horizontal member 31 which is a component of the support rail 3 is manufactured by extruding a metal material such as an aluminum alloy, for example, and then cutting the metal material to an appropriate length, and has an equal cross-sectional shape. As shown in FIGS. 1 to 4, the horizontal member 31 has ridges 311 and 312 on its lower edge and upper edge, which are projections protruding outward as compared with other portions. The protruding ridge 311 on the front side as viewed from the person arriving at the seat 6 protrudes forward from the front facing surfaces of the support rail 3 and the horizontal member 31. In addition, the ridge 312 on the rear side when viewed from the person arriving at the seat 6 protrudes more rearward than the rear surface of the support rail 3 and the horizontal member 31. The ridges 311 and 312 extend in the width direction together with the horizontal member 31 itself, and reach both end surfaces 313 of the horizontal member 31.

  The engaging portion 23 of the leg 2 is engaged with the lower half of the supporting rail 3 (the horizontal member 31 constituting the supporting rail 3) from below. More specifically, the lower surface which is the outer peripheral surface of the support rail 3, the front surface and the rear surface of the lower half portion, while holding the lower ridges 311, 312 below the support rail 3 so as to surround them from both front and rear sides. , And the ridges 311 and 312 are in contact with the upward surface. This prevents the support rail 3 from rattling or shaking with respect to the leg 2. Note that the engaging portion 23 is divided into a plurality of members, and the members may be fastened to each other using bolts, nuts, and the like, so that the engaging portion 23 may be configured.

  The engaging portion 64 of the support rod 63 of the seat 6 is engaged with the upper half of the supporting rail 3 (the horizontal member 31 constituting the supporting rail 3) from above. More specifically, the upper surface which is the outer peripheral surface of the support rail 3, the front surface and the rear surface of the upper half portion, while holding the ridges 311 and 312 above the support rail 3 so as to surround them from both front and rear sides. , As well as the downward surface of the ridge. This prevents the support rod 63 of the seat 6 from rattling or rattling with respect to the support rail 3. Note that the engaging portion 64 is divided into a plurality of members, and the members are sometimes fastened to each other using bolts, nuts, and the like, so that the engaging portion 64 may be configured.

  The joint member 5 is used to connect the plurality of horizontal members 31 constituting the support rail 3. As shown in FIGS. 4, 9 and 10, each of the horizontal members 31 is hollow at least at both left and right ends. Then, the joint member 5 is inserted into each of the hollow end of the adjacent one of the horizontal members 31 and the hollow end of the other horizontal member 31, and a pair of right and left fitting portions 51 to be fitted thereto. And a spacer 52 located between the fitting portions 51 and inserted into the gap 32 between the end surfaces 313 of the two horizontal members 31 and the gaps 32 between the end surfaces 313. The adjacent two horizontal members 31 can be connected to each other. it can. The joint member 5 is a hard integral molded product using, for example, a resin material such as polyamide.

  The spacer 52 is a flange-shaped thin piece that protrudes outward from the outer peripheral surface of the fitting part 51, that is, protrudes forward, upward, rearward, and downward, and that continues one round along the outer circumference of the fitting part 51. It can be used to connect the horizontal members 31 of the book with a gap 32 therebetween. However, the spacer 52 may be formed into an intermittent shape that is cut in places and is not continuous continuously. The insertion portion 42 is orthogonal or substantially orthogonal to the fitting portion 51 and is located at the center or substantially the center of the left and right fitting portions 51. The spacer 52 is harder than the insertion portion 42 of the cover member 4 described later. In other words, the spacer 52 has a larger elastic modulus than the insertion portion 42, and its thickness is less likely to expand and contract than the insertion portion 42 when a stress of the same magnitude acts.

  As shown in FIG. 10, in the present embodiment, the thickness D2 of the spacer 52 is determined by the width of the gap 32 between two adjacent horizontal members 31, that is, the end surface 313 of one horizontal member 31 and the other horizontal member. The distance from the end surface 313 of the material 31 is smaller than the distance. In short, when connecting two adjacent horizontal members 31, the width of the gap 32 between the horizontal members 31 is slightly larger than the thickness D <b> 2 of the spacer 52. Therefore, the spacer 52 is in a state slightly separated from one or both end surfaces 313 of the two connected horizontal members 31. It is preferable that the width of the gap 32 of the horizontal member 31 is set to a value within a range of 3 mm to 3.5 mm.

  As already described, the horizontal member 31 constituting the support rail 3 is an extruded product, and the edge at which the outer peripheral surface of the horizontal member 31 intersects with the end surface 313 (particularly orthogonal or substantially orthogonal) is sharp. . In particular, in the present embodiment, the ridges 311 and 312 for engaging the engaging portion 23 of the leg 2 and the engaging portion 64 of the support rod 63 of the seat 6 with the horizontal member 31 are outward, that is, front and rear. Since the edge where the outer peripheral surfaces of the ridges 311 and 312 and the end surface 313 of the horizontal member 31 intersect forward and backward, the hand, clothes, bag, etc. of the person sitting on the seat 6 Can easily touch the edge.

  Therefore, in the present embodiment, the sharp edges, particularly the edges of the ridges 311 and 312, are joined to the joint of the support rail 3 in which the end surfaces 313 of the two adjacent horizontal members 31 face each other with the gap 32 therebetween. A cover member 4 for covering is provided. As shown in FIGS. 1 to 3, 7, and 8, the cover member 4 includes an insertion portion 42 inserted into a gap 32 between the end surfaces 313 of the horizontal members 31 facing each other, and the insertion portion 42. And an exterior portion 43 that extends along the direction in which the horizontal member 31 extends. The cover member 4 is an integrally molded product using a resin material such as polypropylene, for example, and has flexibility such that it can be bent to some extent by the power of a human hand.

  In this embodiment, the cover member 4 is divided into an upper part 41 and a lower part 41. The lower part 41 is inserted from below into the gap 32 between the end surfaces 313 of the two horizontal members 31 and covers the lower half end surface 313 and the outer peripheral surface of the ends of the horizontal members 31. In addition, the upper component 41 is inserted into the gap 32 between the end surfaces 313 of the two lateral members 31 from above, and covers the end surface 313 and the outer peripheral surface of the upper half at the ends of the lateral members 31. . However, the upper part 41 and the lower part 41 are common. The shape of the upper part 41 and the shape of the lower part 41 are the same, and they are symmetric with respect to the horizontal plane. Therefore, the upper part 41 can be turned over and used as the lower part 41, or the lower part 41 can be turned over and used as the upper part 41.

  The shape of the component 41 constituting the cover member 4 will be additionally described. As shown in FIGS. 2, 3, 7 to 9, the exterior 43 has a contour shape of the horizontal member 31 in a side view or a side cross-sectional view, that is, a convex front portion from the front surface of the horizontal member 31. The shape surrounding the upper half or the lower half of the horizontal member 31 is adjusted in accordance with the outer periphery of the ridge 311, the upper surface of the horizontal member 31, the rear convex ridge 312 and the rearward surface of the horizontal member 31. Have. At the same time, the exterior part 43 has a flat plate shape that extends from the insertion part 42 to the left and right sides along the width direction.

  As shown in FIGS. 2, 9 and 10, when the cover member 4 (each component 41) is attached to the seam 32 at the end of the adjacent horizontal member 31, the front wall 431 of the exterior 43 is in contact with both ends. The top wall 433 abuts or approaches the front surface at the end of the horizontal member 31, the top wall 433 abuts or approaches the upper or lower surface at the end of the two horizontal members 31, and the rear wall 435 connects the two horizontal members 31. Abuts or approaches the rearward surface at the end of Further, the bulging wall 432 that connects the front wall 431 and the top wall 433 while curving so as to bulge forward in the exterior part 43 follows the front ridge 311 at the ends of both the lateral members 31. And abut or approach it. In addition, the bulging wall 434 that connects the top wall 433 and the rear wall 435 while curving so as to bulge rearward in the exterior part 43 extends along the rear ridge 312 at the ends of the two lateral members 31. And abut or approach it. As a result, the exterior part 43 of the cover member 4 shields and covers each end of the two adjacent horizontal members 31 and the gap 32 between the two from outside.

  The exterior portion 43 has a width W2 of the portions 434 and 435 on the rear side for the person arriving at the seat 6 and a width W1 of the portions 431 and 432 on the front side for the person occupying the seat 6 of the exterior portion 43. We take big. Specifically, the width W2 of the rear wall 435, the rear bulging wall 434, and the rear end of the top wall 433 connected to the rear wall 435, the front wall 431, the front bulging wall 432, and the top wall 433 connected to the front wall 433. It is slightly larger than the width W1 at the front end. The width of the top wall 433 gradually decreases from the rear end to the front end. The reason for setting the width dimensions W1 and W2 of the exterior part 43 in this way is first to clarify the front and rear of each component 41 of the cover member 4. Second, as shown in FIG. 11, the support rail 3 is not completely straight, but is gently curved in accordance with the shape of a stadium or the like in which the seat 6 is installed. When one of the horizontal members 31 is inclined forward by one or several degrees with respect to the other and then connected to each other, the gap 32 between the end surfaces 313 and 313 of the horizontal members 31 This is for appropriately shielding both front and rear by the part 43.

  As shown in FIGS. 3, 7 to 9, the insertion portion 42 projects inward from the inner periphery of the exterior portion 43, that is, backward from the front wall 431 and the front bulging wall 432, and downward from the top wall 433. It is a thin piece protruding forward (upper part 41) or upward (lower part 41) from the rear wall 435 and the rear bulging wall 434. The insertion portion 42 is orthogonal or substantially orthogonal to the exterior portion 43 and is located at the center or approximately the center of the widths W1 and W2 of the exterior portion 43. The insertion portion 42 is softer than the flange 52 of the joint member 5 described above. In other words, the insertion portion 42 has a smaller elastic modulus than the spacer 52, and expands and contracts more than the spacer 52 when a stress of the same magnitude acts.

  As shown in FIGS. 8 and 10, the thickness D1 of the insertion portion 42 is equal to the width of the gap 32 between two adjacent horizontal members 31, that is, the end surface 313 of one horizontal member 31 and the other horizontal member. 31 is equal to or approximately equal to the distance from the end surface 313 (slightly larger or slightly smaller than the width of the gap 32). As shown in FIGS. 2, 9 and 10, when the cover member 4 (each component 41) is attached to the joint 32 at the end of the adjacent horizontal member 31, the insertion portion 42 The gap 32 between the end faces 313 is inserted into the gap 32 between the end faces 313, and abuts or approaches the end faces 313 of the horizontal members 31 to cover almost all of the end faces 313. Normally, the insertion portion 42 fits tightly into the gap 32 between the end surfaces 313 of the two lateral members 31 and comes into close contact with the end surfaces 313 of the two lateral members 31.

  Accordingly, the outer edge 43 and the insertion portion 42 of the cover member 4 cover a sharp edge where the outer peripheral surface and the end surface 313 at the end of the horizontal member 31 intersect. In particular, the edge where the outer peripheral surfaces of the ridges 311 and 312 intersect with the end surface 313 is concealed, so that human hands, clothes, bags, and the like are prevented from touching the edge.

  As shown in FIGS. 9 and 10, when the ends of the two horizontal members 31 are connected to each other using a joint material, and the cover member 4 is attached to the gap 32 between the horizontal members 31, The spacer 52 of the joint member 5 and the insertion portion 42 of the cover member 4 face each other along the inside and outside directions within the gap 32 of the horizontal member 31.

  As shown in FIGS. 7 and 9, in a side view or a side cross-sectional view, the area of the portion 421 on the front side for the person who arrives at the seat 6 of the insertion part 42 is the person who arrives at the seat 6 of the insertion part 42. Is larger than the area of the portion 422 on the rear side. Specifically, by partially cutting out a portion 422 of the insertion portion 42 surrounded by the bulging wall 434 behind the exterior portion 43, the area of the portion 422 on the rear side of the insertion portion 42 can be reduced. Is smaller than the area of the portion 421 surrounded by the bulging wall 432 at the front of the vehicle.

  Thereby, the parts 434 and 435 on the rear side of the components 41 constituting the cover member 4 are more easily elastically deformed than the parts 431 and 432 on the front side. For example, the rear wall 435 and the rear bulging wall 434 are provided. To bend rearwardly upward (upper part 41) or rearward lower (lower part 41). In addition, friction between the rear portion 422 of the insertion portion 42 inserted into the gap 32 of the horizontal member 31 and the end surface 313 of the horizontal member 31 is smaller, and the front portion 421 and the end surface 313 of the horizontal member 31 are smaller. And the friction with it becomes greater. As a result, the front side of the cover member 4 attached to the joint 32 of the support rail 3, that is, the side that is easily accessible to the person seated on the seat 6, is more difficult to come off, while the rear side of the cover member 4, that is, the seat member is seated. The side that is hard to reach is more likely to come off.

  When attaching each component 41 of the cover member 4 to the joint 32 of the support rail 3, the front side of the insertion portion 42 is first inserted or press-fitted into the gap 32 of the horizontal member 31 from the front, and the exterior portion 43 is inserted. The front wall 431 and the front bulging wall 432 are in contact with or close to the front face of the end of the horizontal member 31 and the front ridge 312. Next, the upper side (upper part 41) or the lower side (upper part 41) of the insertion part 42 is inserted or press-fitted into the gap 32 of the horizontal member 31 from above or below, and the top wall 433 of the exterior part 43 is attached. It is brought into contact with or close to the upper or lower surface of the end of the horizontal member 31. Thereafter, the rear side of the insertion portion 42 is inserted or press-fitted into the gap 32 of the horizontal member 31 from behind, and the rear wall 435 and the rear bulging wall 434 of the exterior portion 43 are positioned behind the end of the horizontal member 31. It is brought into contact with or close to the facing surface and the rear protruding line 312.

  In order to separate each component 41 of the cover member 4 attached from the joint 32 of the support rail 3, first, the rear wall 435 and the rear bulging wall 434 of the exterior part 43 are connected to a horizontal member. The rear side of the insertion part 42 is pulled out from the gap 32 of the horizontal member 31 so as to be separated rearward from the end of the base 31. Next, the top wall 433 and the top wall 433 of the exterior part 43 are separated upward (upper part 41) or downward (lower part 41) from the end of the horizontal member 31, and the upper side or lower side of the insertion part 42 is separated. The horizontal member 31 is pulled out from the gap 32. Finally, the front wall 431 of the exterior part 43 and the bulging wall 432 on the front side are pulled forward from the end of the horizontal member 31 so that the front side of the insertion portion 42 is removed from the gap 32 of the horizontal member 31. Put out.

  The length of the metal horizontal member 31 expands and contracts with a change in temperature. Further, when the concrete block 11 constituting the floor 1 is displaced, the leg 2 fixed to the concrete block 11 and the horizontal member 31 supported by the leg 2 are also displaced. In constructing the support rail 3, the end surfaces 313 of the adjacent horizontal members 31 are connected to each other with a gap 32 therebetween without being in close contact with the end surfaces 313 because the horizontal members 31 collide with the adjacent horizontal members 31. This is because a space that can be displaced without any change is secured in advance, and the occurrence of excessive stress concentration on the horizontal member 31 due to expansion and contraction or displacement of the horizontal member 31 is avoided or suppressed. The thickness D2 of the spacer 52 of the joint member 5 is smaller than the width of the gap 32 of the horizontal member 31 and the thickness D1 of the insertion portion 42 of the cover member 4, and the insertion portion 42 of the cover member 4 is relatively thin. The softness also contributes to the purpose of preventing the transverse member 31 from being damaged due to excessive stress acting on the transverse member 31.

  As shown in FIG. 5, two adjacent legs 2 may be fixed to concrete blocks 11 that are separate from each other. When these two legs 2 are connected to the same one cross member 31, when one concrete block 11 is displaced relative to another concrete block 11, it is fixed to each concrete block 11. The legs 2 may also move in different directions from each other, causing damage to the cross members 31 supported by the legs 2.

  Therefore, when the two adjacent legs 2 are fixed to the concrete blocks 11 different from each other, the horizontal member 31 with which one leg 2 engages and the horizontal member 31 with which the other leg 2 engages Are arranged so that the legs 2 and the lateral members 31 are separated from each other. In the present embodiment, between a horizontal member 31 with which one leg 2 is engaged and a horizontal member 31 with which the other leg 2 is engaged, an intermediate horizontal member which is shorter than the horizontal members 31. 31 is interposed. The intermediate horizontal member 31 is separated from the horizontal member 31 with which one leg 2 is engaged, and is separated from the horizontal member 31 with which the other leg 2 is engaged, and forms separate bodies. Needless to say, the horizontal member 31 with which one leg 2 is engaged is separate from the horizontal member 31 with which the other leg 2 is engaged. The legs 2 fixed to the concrete block 11 do not engage with the intermediate cross member 31, that is, are not directly supported by the legs 2. The joint 12, which is the boundary between the two concrete blocks 11, is located at a position that overlaps the middle horizontal member 31.

  In addition, as shown in FIG. 5, the engaging portion 64 provided on the support rod 63 of the seat 6 is engaged so as to straddle both ends of two adjacent horizontal members 31. For example, it may be engaged so as to cover the joint 32 of the support rail 3. In this case, the engaging portion 64 is tightly fitted to the outer periphery of each of the lateral members 31 including the ridges 311 and 312 and tightly bound, so that there is a gap between the end surfaces 313 of the two lateral members 31. Even though the cross members 32 are provided, the horizontal members 31 are integrated by the engaging portions 64 (although they are separated and formed as separate members). That is, one of the two adjacent horizontal members 31 is prevented from being relatively displaced with respect to the other. The same applies to the case where the engaging portion 23 provided on the leg 2 is engaged so as to straddle both ends of two adjacent horizontal members 31.

  Then, the engaging portion 64 of the seat 6 or the engaging portion 23 of the leg 2 is engaged so as to straddle the left end of the intermediate horizontal member 31 and the right end of the horizontal member 31 adjacent to the left, and When engaged so as to straddle the right end of the same middle horizontal member 31 and the left end of the right adjacent horizontal member 31, the three horizontal members 31 including the intermediate horizontal member 31 are integrated. As a result, the situation is the same as when the two legs 2 fixed to the separate concrete blocks 11 are connected to one cross member 31. Then, excessive stress may concentrate on any of the horizontal members 31 due to elongation or displacement of the horizontal member 31 itself.

  In order to avoid this problem, in the present embodiment, one end of one horizontal member 31 (particularly, the intermediate horizontal member 31) and one end of another horizontal member 31 adjacent thereto are connected to each other. When the engaging portions 64 and 23 of any of the seats 6 or the legs 2 are engaged so as to straddle both sides, the other end of the horizontal member 31 (intermediate horizontal member 31) is adjacent to the other end. The length of the lateral member 31 is set so that the engaging portions 64 and 23 of any of the seats 6 or the legs 2 do not engage so as to straddle both ends of another lateral member 31 to be formed. I have. Specifically, the length of the intermediate horizontal member 31 is set to be the same as the distance between a pair of engaging portions 64 provided on the left and right sides of one seat 6, that is, the inner dimension of both engaging portions 64 or By making it shorter than that, the possibility that the engaging portions 64 on both sides of the seat 6 simultaneously cover and engage with the joints 32 on both the left and right sides of one intermediate horizontal member 31 is reduced.

  The number of the seats 6 can be arbitrarily increased or decreased, and the arrangement layout can be arbitrarily changed along the extending direction of the support rail 3. Incidentally, the lower edge of the engaging portion 64 of the seat 6 that engages with the support rail 3 corresponds to the part 41 (of the front wall 431 and the rear wall 435) below the cover member 4 attached to the joint 32 of the support rail 3. It is located above the upper edge. As shown in FIG. 5, when the engaging portion 64 of any of the seats 6 covers and engages with the joint 32 of the support rail 3, the part 41 above the cover member 4 is attached to the joint 32. Instead, only the lower part 41 is mounted.

  In addition, the upper edge of the engaging portion 23 of the leg 2 engaging with the support rail 3 is connected to the part 41 (the front wall 431 and the rear wall 435) of the part 41 above the cover member 4 attached to the joint 32 of the support rail 3. ) It is located above the lower edge. When the engaging portion 23 of any one of the legs 2 covers and engages with the joint 32 of the support rail 3, only the upper component 41 is attached to the joint 32 without mounting the lower component 41 of the cover member 4. I do.

  The lower edge of the engagement portion 64 of the seat 6 is located above the upper edge of the engagement portion 23 of the leg 2, and the engagement of the engagement portion 64 of the seat 6 and the support rail 3 It is also possible that the parts 23 are simultaneously covered and engaged. In this case, both parts 41 of the cover member 4 are not attached to the joint 32.

  In the present embodiment, a support rail 3 for supporting the seat 6 and a plurality of horizontal members 31 extending in a predetermined direction are connected with a gap 32 therebetween, and an end surface 313 of one adjacent horizontal member 31. The insertion portion 42 which is inserted into the gap 32 between the end portion 313 of the other horizontal member 31 and the end surface 313 of the horizontal member 31 to contact or approach at least a part of the end surface 313 of the horizontal member 31, And a cover member 4 having an exterior portion 43 that extends along the extending direction of the horizontal member 31 and abuts on or approaches at least a part of the outer periphery of the horizontal member 31 intersecting with the end surface 313 of the horizontal member 31 for seat support. The structure was constructed. According to the present embodiment, when constructing the support rail 3 for supporting the seat 6 by connecting the plurality of transverse members 31, it appears at the joint 32 between the adjacent transverse members 31. The edges can be suitably coated.

  The horizontal member 31 is provided with protrusions 311 and 312 protruding from other portions, and the protrusions 311 and 312 reach the end surface 313 of the horizontal member 31. When the cover member 4 contacts or approaches the end surface 313 of the projections 311 and 312 and contacts or approaches the outer periphery of the projections 311 and 312 at the end of the horizontal member 31, the projection 311 It covers a sharp edge where the outer periphery of 312 and the end face 313 intersect.

  A seat 6 supported by the support rail 3 is engaged with the protrusions 311 and 312, and a support (leg) 2 that supports the support rail 3 can be engaged. That is, the projections 311 and 312 can be used for coupling the support rail 3 and the seat 6 or coupling the support rail 3 and the support 2.

  The protrusions 311 and 312 are provided above and below the horizontal member 31, respectively. The seat 6 is engaged with the protrusions 311 and 312 on the upper side, and the support body is engaged with the protrusions 311 and 312 on the lower side. 2 and the cover member 4 is divided into upper and lower parts, and one of the parts 41 is inserted from below into the gap 32 between the end surface 313 of the horizontal member 31 and the end surface 313 to insert the horizontal member. The other end 41 covers the lower end surface 313 and the outer periphery of the lower member 31, and the other part 41 is inserted into the gap 32 between the end surface 313 and the end surface 313 of the horizontal member 31 from above, and the upper end surface of the horizontal member 31. 313 and the outer periphery. Thereby, interference between the engaging portions 64 and 23 provided on the seat 6 or the support 2 and the cover member 4 can be avoided, and the mounting position of the seat 6 or the support 2 with respect to the support rail 3 can be arbitrarily set or set. Be able to change flexibly. When the engaging portion 64 of the seat 6 is engaged so as to overlap the gap 32 between the adjacent horizontal members 31, that is, to straddle both ends of both the horizontal members 31, The upper part 41 of the cover member 4 may be omitted, and only the lower part 41 may be mounted in the gap 32. When the engaging portion 23 of the support 2 is engaged so as to overlap the gap 32 between the adjacent horizontal members 31, the lower component 41 of the cover member 4 is omitted and the upper component is removed. Only 41 needs to be mounted in the gap 32. In addition, since the cover member 4 is vertically divided, the work of attaching the cover member 4 to the support rail 3 or detaching the cover member 4 from the support rail 3 becomes easier.

  Since the cover member 4 covers the end face 313 and the outer periphery of the end portion of the horizontal member 31 on the front side for the person arriving at the seat 6, it is possible to cover the easy-to-reach places with the cover member 4, It is possible to effectively prevent a finger of a person from touching the sharp edge of the horizontal member 31.

  With respect to the cover member 4, the width dimension W2 of the portion 434, 435 on the rear side of the exterior part 43 for the person arriving at the seat 6 is changed to the front part 431, 432 of the exterior part 43 on the side of the person occupying the seat 6. Is set to be larger than the width W1 of the end of the horizontal member 31 when the support rail 3 is gently curved in accordance with the shape of the stadium or the like where the seat 6 is installed, as shown in FIG. It is effective to appropriately shield the gap 32 between the 313 and the end face 313 from both the front and rear by the exterior part 43.

  Further, since the area of the portion 421 on the front side of the person who arrives at the seat 6 of the insertion part 42 is larger than the area of the part 422 on the rear side of the person who arrives at the seat 6 of the insertion part 42, the support rail The front side of the cover member 4 attached to 3, that is, the side that is easily accessible by humans, is unlikely to come off.

  An end portion of the horizontal member 31 is hollow, and a fitting portion 51 that is inserted into both the end portion of one adjacent horizontal member 31 and the end portion of the other horizontal member 31 to be fitted thereto, Further, the joint member 5 having the spacer 52 which is inserted between the two fitting portions 51 and is inserted into the gap 32 between the end surfaces 313 of the two horizontal members 31 and abuts on or approaches at least a part of the end surfaces 313 is provided. Since the insertion member 42 and the spacer 52 are provided in the gap 32 between the end surface 313 and the end surface 313 of the horizontal member 31, a plurality of horizontal members can be easily provided via the joint member 5. The gaps 32 through which the cover member 4 can be inserted into the joint between the horizontal members 31 can be appropriately secured by the spacers 52.

  However, in the present embodiment, the support rail 3 for supporting the seat 6 adjacent to the plurality of cross members 31 extending in the predetermined direction and having hollow ends is connected with the gap 32 therebetween. A fitting portion 51 inserted into and fitted to both the end of one of the horizontal members 31 and the end of the other horizontal member 31, and the two horizontal members 31 between the two fitting portions 51. A joint member having a spacer 52 whose thickness is smaller than the width of the gap 32 and is separated from the end face 313 of one or both of the horizontal members 31 while being inserted into the gap 32 between the end face 313 and the end face 313 5 to form a seat supporting structure. According to the present embodiment, in a construction in which a plurality of transverse members 31 are connected to form a support rail 3 for supporting the seat 6, excessive stress is applied to the transverse members 31 due to displacement of the transverse members 31. Acting can be avoided or suppressed.

  In addition, in the present embodiment, a plurality of horizontal members 31 extending in a predetermined direction are connected with a gap 32 therebetween, and a support rail 3 for supporting the seat 6 and supported by the support rail 3. The support member 2 supporting the seat 6 or the support rail 3 is provided with engaging portions 64 and 23 for engaging with the support rail 3. One end of one horizontal member 31 and When one of the seats 6 or the engaging portions 64 and 23 of the support 2 is engaged so as to straddle both ends of another horizontal member 31 adjacent to the horizontal member 31, In order that the engaging portions 64 and 23 of any of the seats 6 or the support 2 do not engage so as to straddle both the end portion and the end portion of another transverse member 31 adjacent thereto, the transverse member 31 may be used. The length of the seat support structure is set. According to the present embodiment, in a construction in which a plurality of transverse members 31 are connected to form a support rail 3 for supporting the seat 6, excessive stress is applied to the transverse members 31 due to displacement of the transverse members 31. Acting can be avoided or suppressed.

  The gap 32 between the end surface 313 of the horizontal member 31 and the end surface 313 is set to, for example, a size between 3 mm to 3.5 mm.

  Then, the insertion portion 42 that is inserted into the gap 32 between the end surface 313 of the horizontal member 31 and the end surface 313 of the horizontal member 31 to contact or approach at least a part of the end surface 313 of the horizontal member 31, and the insertion portion 42 And a cover member 4 having an exterior part 43 extending along the direction of extension of the horizontal member 31 and abutting or approaching at least a part of the outer periphery of the horizontal member 31 intersecting with the end surface 313 of the horizontal member 31. By doing so, the edge appearing at the joint 32 between the adjacent transverse members 31 can be covered with the cover member 4 appropriately.

  The insertion portion 42 of the cover member 4 is softer than the spacer 52 of the joint member 5. As a result, even if the insertion portion 42 of the cover member 4 is tightly fitted into the gap 32 between the end surfaces 313 of the horizontal members 31 and is brought into close contact with the end surfaces 313 of both the horizontal members 31, It is difficult for excessive stress to act on.

  When two adjacent supports 2 of the supports 2 that support the support rail 3 are fixed to concrete blocks 11 that are separate from each other, a horizontal member 31 with which one of the two supports 2 is engaged and The two horizontal members 31 are separated from the horizontal members 31 with which the other members engage.

  Between the horizontal member 31 with which one of the two supports 2 engages and the horizontal member 31 with which the other engages, there is an intermediate member which is separated from these two horizontal members 31 and forms a separate body. The horizontal member 31 is interposed.

  Note that the present invention is not limited to the embodiment described in detail above. For example, the backrest 62 is not indispensable to the seat 6, and the seat 6 including only the seat 61 can be supported by the support rail 3. The mechanism for raising the seat 61 is not essential.

  Projections (projections) 311 and 312 projecting above the upper surface and projections (projections) 311 and 312 projecting below the lower surface are formed on the horizontal member 31 constituting the support rail 3. The engaging portions 64 of the seat 6 or the engaging portions 23 of the legs 2 may be engaged with the projections 311, 312. In this case, it looks as if FIG. 9 is rotated 90 degrees to the left or right. In this case, too, of course, the insertion portion 42 of the cover member 4 is inserted into the gap 32 between the end surfaces 313 of the horizontal members 31 and comes into contact with or comes close to at least a part of the end surfaces 313 so as to make this. Cover. Then, the exterior portion 43 extended from the insertion portion 42 in the extending direction of the horizontal member 31 abuts on or approaches at least a part of the outer periphery intersecting with the end surface 313 of the horizontal member 31 to cover it.

  In the above embodiment, the cover member 4 is vertically divided into two parts. However, the cover member 4 may be divided into two parts in the front and rear directions.

  The cover member 4 for covering the edge of the horizontal member 31 is not an essential component. As shown in FIGS. 12 and 13, by projecting the spacer 52 of the joint member 5 outward to a position where the outer periphery thereof is flush or substantially flush with at least a part of the outer periphery of the horizontal member 31. The edge at which the outer peripheral surface of the horizontal member 31 intersects the end surface 313 can be covered or shielded. In this case, the thickness width of the spacer 52 is determined by the width of the gap 32 between two adjacent horizontal members 31, that is, the distance between the end surface 313 of one horizontal member 31 and the end surface 313 of the other horizontal member 31. It is preferable that they are equal or substantially equal (slightly larger or slightly smaller than the width of the gap 32). The spacer 52 abuts or approaches at least a part of the end surface 313 of the horizontal member 31. In particular, the spacer 52 is in contact with or close to the end surfaces 313 of the protrusions 311, 312 at the end of the horizontal member 31, and is flush or substantially flush with the outer periphery of the protrusions 311, 312.

  Further, the spacer 52 of the joint member 5 is extended outward to a position where the outer periphery of the spacer 52 projects more than at least a part of the outer periphery of the horizontal member 31 so that the outer peripheral surface and the end surface of the horizontal member 31 can be extended. It is also conceivable to cover or shield the edge where 313 intersects. The spacer 52 may protrude outward from the outer periphery of the projections 311 and 312 while being in contact with or near the end surface 313 of the projections 311 and 312 at the end of the horizontal member 31.

  The exterior part 43 of the cover member 4 in the above embodiment is not essential, and the cover member 4 having no such exterior part 43, that is, the end surface 313 of one adjacent horizontal member 3 and the other horizontal member 3 It is also possible to configure the cover member 4 having only the insertion portion 42 which is inserted into the gap 32 with the end surface 313 of the horizontal member 3 and abuts on or approaches at least a part of the end surface 313 of the horizontal member 3. In this case, similarly to the spacer 52 shown in FIGS. 12 and 13, the insertion portion 42 of the cover member 4 abuts or contacts the end surface 313 of the portion including the projections 311 and 312 at the end of the horizontal member 3. Be close. It is preferable that the insertion portion 42 is flush with or substantially flush with the outer periphery of the portion including the protrusions 311 and 312 of the horizontal member 3 or protrudes outward.

  In addition, the specific configuration of each part can be variously modified without departing from the spirit of the present invention.

11 ... concrete block 2 ... support (leg)
23 ... engagement part 3 ... support rail 31 ... horizontal member 311,312 ... projection (projection)
313: end surface 32: gap 4: cover member 41: component 42: insertion portion 43: exterior portion 5: joint member 51: fitting portion 52: spacer 6: seat 64: engagement portion D1: thickness of the insertion portion D2: spacer Thickness W1… width of the front part of the exterior part

  W2: Width of the rear part of the exterior part

Claims (8)

A plurality of cross members extending in a predetermined direction and having a hollow end are connected with a gap therebetween, and a support rail for supporting a seat,
A fitting portion which is inserted into both the end of one adjacent horizontal member and the end of the other horizontal member to fit them, and the end face of both horizontal members between the two fitting portions. And a joint member having a spacer having a thickness smaller than the width of the gap while being inserted into the gap with the end face and having a spacer separated from the end face of one or both of the transverse members. A seat that is supported by the support rail or a support that supports the support rail is provided with an engagement portion that engages with the support rail,
In the case where the engaging portion of any seat or support is engaged so as to straddle both the end on one side of one cross member and the end of another cross member adjacent thereto. In order to prevent the engaging portion of any of the seats or the support members from being engaged so as to straddle both the other end of the transverse member and the end of another transverse member adjacent thereto, the transverse member The structure for supporting a seat according to claim 1, wherein the length is set. A plurality of horizontal members extending in a predetermined direction are connected with a gap, a support rail for supporting a seat,
A seat provided on the support rail or provided on a support supporting the support rail, comprising: an engaging portion that engages with the support rail;
In the case where the engaging portion of any seat or support is engaged so as to straddle both the end on one side of one cross member and the end of another cross member adjacent thereto. In order to prevent the engaging portion of any of the seats or the support members from being engaged so as to straddle both the other end of the transverse member and the end of another transverse member adjacent thereto, the transverse member The structure for supporting the seat, the length of which is set. The seat supporting structure according to claim 1, 2 or 3, wherein a gap between the end surfaces of the transverse members is set between 3 mm and 3.5 mm. An insertion portion that enters the gap between the end surfaces of the horizontal members and abuts or approaches at least a part of the end surfaces of the horizontal members, and extends from the insertion portion along the extending direction of the horizontal member. 5. The structure for supporting a seat according to claim 1, further comprising a cover member having an exterior portion abutting on or approaching at least a part of the outer periphery of the horizontal member intersecting with the end surface of the horizontal member. An insertion portion that enters the gap between the end surfaces of the horizontal members and abuts or approaches at least a part of the end surfaces of the horizontal members, and extends from the insertion portion along the extending direction of the horizontal member. A cover member having an exterior part that abuts or is at least part of the outer periphery of the horizontal member that intersects the end surface of the horizontal member,
The structure for supporting a seat according to claim 1, wherein the insertion portion is softer than a spacer of the joint member. When two adjacent supports among the supports that support the support rail are fixed to separate concrete blocks, one of the two supports is engaged with the cross member, and the other is engaged. The seat supporting structure according to claim 1, 2, 3, 4, 5, or 6, wherein the structure is separated from the horizontal member to form a separate body. An intermediate horizontal member separated from and separated from both the horizontal members is interposed between the horizontal member to which one of the two supports is engaged and the horizontal member to which the other support is engaged. The structure for supporting a seat according to claim 7.

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