Sheet holder

Abstract

To provide a sheet holder which is used when attaching a sheet to a support constituting a scaffold, can be manufactured at low cost, is easy to handle when in use, and is excellent in portability and safety.SOLUTION: A sheet holder is composed of a wall portion 15, an upper jaw 12, a lower jaw 16, an upper hanging piece 23, a lower hanging piece 17, a support shaft 32, and a regulating piece 36. The upper jaw 12 and the lower jaw 16 are protruding from the wall portion 15, and the upper hanging piece 23 is movable, so that the sheet holder can be attached and detached to a fastening portion 73 of a support 71. The regulating piece 36 can protrude from the support shaft 32 by its own weight, and the attachment of a sheet 81 is completed when an eyelet 82 of the sheet 81 reaches the back of the regulating piece 36. This sheet holder can be mass-produced using synthetic resin, is inexpensive and easy to handle, and is lightweight so that it can be carried to high places without difficulty. Moreover, by using a fastener 41 in combination, two sheets 81 can be attached to one support shaft 32.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sheet holder for use when attaching a sheet to the outside of scaffolding erected at a construction site. [Background technology]

[0002] At construction sites, scaffolding is sometimes constructed along walls to facilitate work at heights. The scaffolding is made up of metal pipes, such as single-tube pipes, assembled in a lattice pattern and scaffolding boards installed to straddle the metal pipes. However, the outside of the scaffolding is sometimes completely covered with a sheet to protect the wall, reduce noise, and prevent falling objects from scattering. Grommets are formed continuously on the outer edge of the sheet, and the sheet can be tied to the metal pipes by passing a string through them. However, since the task of tying the sheet with a string is time-consuming, a technology such as that described in the patent document below has been proposed to simplify the task.

[0003] Patent Document 1 discloses a sheet holding device for reducing the effort required to attach a sheet to a scaffold. This sheet holding device includes a fixing member, a clip, and a locking member. The fixing member is fitted into the fastening portion of the support pole that constitutes the scaffold, and the standing plate of the fixing member has a through hole for inserting the clip. The clip is U-shaped, and when the clip is inserted so as to straddle the eyelets of two adjacent sheets and then the tip of the clip is inserted into the through hole of the standing plate, the sheet is sandwiched between the fixing member and the clip. The locking member is adjacent to the standing plate and functions as a retainer for the clip to come off.

[0004] The following Patent Document 2 also discloses a sheet clamp with a similar function. When surrounding a construction site with sheets, if a string or the like is used to attach the sheet, it becomes difficult to restrain the movement of the sheet, and there is a problem that the sheet may bend. Therefore, this sheet clamp has a clamp body that surrounds the support pipes that constitute the scaffolding, a thrusting pestle that protrudes from the clamp body, and a locking piece that is attached near the tip of the thrusting pestle, and it is possible to eliminate the use of a string. The locking piece is freely raised and lowered relative to the thrusting pestle, and the locking piece is protruded in the same direction as the thrusting pestle, and then the thrusting pestle is inserted into the circular hole (grommet) of the sheet, and then the locking piece is lowered, so that the sheet cannot be separated from the thrusting pestle. In addition, one sheet clamp has two thrusting pestle so that two adjacent sheets can be held together.

[0005] In addition, Patent Document 3 discloses a connector for protective sheets that can connect protective sheets without using tools and is designed for repeated use. This connector for protective sheets is configured to have a belt-shaped body that is wrapped around a scaffolding pipe and a connector that is inserted into an insertion ring (grommet) of the protective sheet, and the belt-shaped body can be fixed to the scaffolding pipe. The connector is rod-shaped with a flange-shaped disk on the base side of the metal pipe, and a stopper is built in on the opposite side of the disk, and the stopper protrudes from the metal pipe by a spring. The belt-shaped body has an insertion hole for inserting the metal pipe of the connector, and when actually attaching the protective sheet, first insert the metal pipe into the insertion hole, then wrap the belt around the scaffolding pipe, and then insert the connector into the insertion ring and make the insertion ring reach the rear of the stopper, thereby completing the attachment of the protective sheet. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2021-165467 A [Patent Document 2] Japanese Patent Application Publication No. 11-311029 [Patent Document 3] Publicly-available Practical Application Publication No. Heisei 2-122836 Summary of the Invention [Problem to be solved by the invention]

[0007] When constructing scaffolding around a large-scale building and covering its exterior with a sheet, the number of places where the sheet is attached to the scaffolding is enormous, so it is desirable to use some kind of sheet holder to improve the efficiency of the work, as in the above-mentioned patent documents. In that case, since a large number of sheet holders are required, it is essential that the sheet holders can be manufactured inexpensively, and it is also desirable that they are easy to handle. In addition, when installing the sheet, since a large number of sheet holders are carried to a high place by hand, it is necessary to realize light weight and small size, and in addition, in order to prevent accidents due to falling, the number of disposable parts should be reduced as much as possible.

[0008] The present invention has been developed in light of the above circumstances, and has as its object to provide a sheet holder which can be manufactured at low cost, is easy to handle when in use, and is highly portable and safe. [Means for solving the problem]

[0009] The invention described in claim 1 for solving the above problem is a sheet holder that is incorporated into a fastening part of a support and used to hold a sheet, the sheet holder having a wall portion facing the front plate of the fastening part, an upper jaw that contacts the top surface of the fastening part, a lower jaw that faces the bottom surface of the fastening part, an upper hanging piece that protrudes downward from the upper jaw, a lower hanging piece that protrudes upward from the lower jaw, a support shaft that protrudes from the wall portion in the opposite direction to the support, and a regulating piece that can protrude downward from the side surface of the support shaft, and either one of the upper hanging piece or the lower hanging piece is connected to the upper jaw or The sheet is movable relative to the lower jaw, and when both the upper and lower pieces come into contact with the inner surface of the fastening portion, the entire sheet cannot be separated from the fastening portion. In addition, when either the upper or lower piece is pulled away from the fastening portion, the entire sheet can be separated from the fastening portion. The regulating piece is housed inside the support shaft and is movable relative to the support shaft, and when the regulating piece falls under its own weight, it protrudes from the support shaft. Furthermore, when the eyelet of the sheet inserted into the support shaft reaches deeper than the regulating piece, the sheet cannot be separated.

[0010] The sheet holder according to the present invention is intended to be used with a support having a fastening part, and is incorporated into the support via the fastening part. The fastening part is attached to the side peripheral surface of the support by welding or the like, and when viewed from above, the fastening part is U-shaped, with both ends integrated with the side peripheral surface of the support, and when viewed from the side, the fastening part is wedge-shaped, approaching the support as it goes downward, so that the inside of the fastening part can support a scaffolding board or the like. In this specification, the parts of the fastening part that protrude outward from the side peripheral surface of the support (both ends of the U-shape) are referred to as side panels, and the parts that connect the tips of the two rows of side panels are referred to as front panels. In addition, the sheet is assumed to have grommets formed on its outer edge.

[0011] The sheet holder is broadly composed of a wall, an upper jaw, a lower jaw, an upper hanging piece, a lower hanging piece, a support shaft, and a regulating piece, of which the wall is located outside the front plate of the fastening part and stands roughly upright so as to cover the front plate. The upper jaw protrudes from the upper end side of the wall toward the support and can rest on the top surface of the fastening part. The lower jaw protrudes from the lower end side of the wall toward the support and faces the bottom surface of the fastening part. Therefore, the distance between the upper jaw and the lower jaw is equal to the height of the fastening part. However, the upper jaw and the lower jaw are simply parts that can come into contact with the fastening part and do not function to restrict the movement of the sheet holder.

[0012] The upper hanging piece protrudes downward from the upper jaw and contacts the inner surface of the fastening portion. The lower hanging piece protrudes upward from the lower jaw and contacts the inner surface of the fastening portion. With both the upper hanging piece and the lower hanging piece contacting the inner surface of the fastening portion in this manner, the sheet holder embraces the fastening portion and cannot be removed from the fastening portion. Therefore, either the upper hanging piece or the lower hanging piece must be configured to be movable, and by pulling either one of them away from the fastening portion, the sheet holder can be removed from the fastening portion. Note that the specific configuration for allowing the upper hanging piece and the lower hanging piece to be movable can be freely determined, but it is assumed that neither the upper hanging piece nor the lower hanging piece will be able to be removed from the sheet holder.

[0013] The support shaft protrudes from the wall in the opposite direction to the support column, and the sheet is supported by inserting the support shaft into the grommet of the sheet. A restricting piece is incorporated into the support shaft to prevent the grommet from coming off. The restricting piece is housed inside the support shaft, but is movable relative to the support shaft, and usually protrudes downward from the side surface of the support shaft due to its own weight. Therefore, after the support shaft is inserted into the grommet, the grommet reaches a position deeper than the restricting piece, and the restricting piece protruding from the support shaft comes into contact with the grommet and functions as a grommet prevention device. However, the grommet can be removed from the support shaft by artificially pushing up the restricting piece and storing most of it in the support shaft. Note that the restricting piece is often shaped so that when it falls under its own weight, the amount of protrusion from the support shaft increases as it moves from the tip side to the base side of the support shaft, and the end face of the protruding restricting piece on the base side of the support shaft is often shaped like an upright cliff.

[0014] In this way, the sheet holder is composed of a wall portion, an upper jaw, a lower jaw, an upper hanging piece, a lower hanging piece, a support shaft, and a regulating piece, and both the upper hanging piece and the lower hanging piece are brought into contact with the inner surface of the fastening portion, and the support shaft is inserted into the sheet eyelet, and the eyelet is simply allowed to reach the back of the regulating piece, causing the regulating piece to fall and completing the installation of the sheet. Because this sheet holder has a simple shape, most of the components can be manufactured as a single unit by molding synthetic resin, making it possible to reduce the weight, and all parts such as the upper hanging piece, lower hanging piece, and regulating piece can be made non-detachable, making it easy to handle.

[0015] The invention described in claim 2 uses a binder consisting of a base plate and a pressing body in combination with the sheet holder according to the invention described in claim 1. A fulcrum pin protrudes from one end of a joint plate constituting the pressing body, and a movable pin protrudes from the other end, and both the fulcrum pin and the movable pin have flanges at their ends, and the fulcrum pin is attached to the base plate so as not to be detached, and the base plate is formed with a large hole into which the flange of the movable pin can be inserted, a small hole connected to the large hole, and a connecting hole for inserting a support shaft, and the small hole is of a size that the flange of the movable pin cannot pass through, and when the grommets of two sheets are adjacent to each other, the fulcrum pin is inserted into one grommet and the movable pin is inserted into the other grommet, and the movable pin is further accommodated in the small hole, so that the two sheets are sandwiched between the base plate and the pressing body, and in this state, the support shaft is inserted into the connecting hole of the base plate, and the base plate reaches a position deeper than the restricting piece, making it impossible for the sheets to be detached.

[0016] The binder is composed of a base plate and a pressing body, and after connecting two adjacent sheets, they can be attached to a single support shaft. The binder is not always integrated with the sheet holder of the invention described in claim 1, but can be detached from it. The grommets of the two sheets must face each other across the boundary between the sheets. The base plate and pressing body are then placed so that they overlap, and the two sheets are sandwiched together between them.

[0017] The base plate is a simple belt-shaped plate, but near its center is formed a connecting hole for inserting the support shaft, and when the support shaft is actually inserted into the connecting hole, a restricting piece must be provided to prevent the base plate from coming off the support shaft. The pressing body is composed mainly of a belt-shaped joint plate, with a fulcrum pin protruding from one end and a movable pin protruding from the other end, of which the fulcrum pin is inserted into the eyelet of one sheet, and the corresponding movable pin is inserted into the eyelet of the other sheet. Furthermore, both the fulcrum pin and the movable pin have flange-shaped flanges on their ends.

[0018] The fulcrum pin is housed inside the substrate, and the flange at the end of the fulcrum pin prevents it from being detached from the substrate, so that the substrate and the pressing body do not separate during use. In contrast, the movable pin requires the pressing body to be inserted into an eyelet, so that it can be detached from the substrate. For this reason, the substrate is formed with a large hole capable of accommodating the flange at the end of the movable pin, as well as a small hole connected to the large hole. The small hole is sized so that the flange cannot pass through, and when the movable pin passes through the large hole and reaches the small hole, the movable pin also becomes unable to be detached from the substrate, so that the two sheets can be sandwiched together. Effect of the Invention

[0019] As in the invention described in claim 1, the sheet holder is composed of a wall, an upper jaw, a lower jaw, an upper hanging piece, a lower hanging piece, a support shaft, and a regulating piece, and both the upper hanging piece and the lower hanging piece are brought into contact with the inner surface of the fastening part, and the support shaft is inserted into the sheet's eyelet, and the eyelet is simply allowed to reach the back of the regulating piece, causing the regulating piece to fall and completing the installation of the sheet. This sheet holder has a simple shape with the upper jaw, lower jaw, and support shaft protruding from the wall, so it is easy to make it small, and can be mass-produced using a mold made of synthetic resin, which is cheaper and lighter than when it is made of metal. Therefore, it is easy to carry a large number of sheet holders to high places by hand.

[0020] When in use, the installation of the sheet holder is completed simply by moving the upper piece and other parts so that they come into contact with the inner surface of the fastening part, and as mentioned above, the installation of the sheet is completed simply by moving the eyelet beyond the restricting piece, so it is easy to handle. In addition, the restricting piece falls under its own weight, so the number of parts is suppressed, and since it is easy to understand how to remove the sheet, the work can be performed smoothly. In addition, since everything, including the upper and lower pieces, can be integrated, there are no parts that can be separated, and accidents due to falling are suppressed.

[0021] As in the invention described in claim 2, by using a binder consisting of a base plate and a pressing body, two adjacent sheets are sandwiched between the base plate and the pressing body, and by inserting a support shaft into the connecting hole of the base plate, the binder becomes unable to come off the support shaft, and two sheets can be held together by a single support shaft. This improves the versatility of the sheet holder according to the present invention, and various effects can be expected in terms of cost, handling, etc. [Brief description of the drawings]

[0022] [Figure 1] 1A to 1C are perspective views showing examples of shapes of a sheet holder according to the present invention. [Diagram 2] 2 is a perspective view showing a process of incorporating the sheet holder of FIG. 1 into a binding part. FIG. [Diagram 3] 2 is a perspective view showing a process of attaching two sheets after the sheet holder of FIG. 1 is incorporated into a fastening portion. FIG. [Figure 4] FIG. 4 is a perspective view showing a state in which the sheet is actually attached after FIG. 3. [Diagram 5] FIG. 2 is a perspective view showing details of the fastener depicted in FIG. 1. [Figure 6] 11 is a perspective view showing a process of connecting two sheets using a fastener. FIG. [Figure 7] 11 is a perspective view showing a process in which two sheets are sandwiched by a fastener when the two sheets are connected by using the fastener. FIG. [Figure 8] 1 is a perspective view showing a state in which two sheets connected by a binder are opposed to a support shaft. FIG. [Figure 9] FIG. 13 is a perspective view showing a state in which the seat is attached to the support pole using two sets of seat holders. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] FIG. 1 shows an example of the shape of the sheet holder according to the present invention. This sheet holder is used to attach a sheet 81 to the outside of a scaffolding constructed at a construction site, and is intended to be incorporated into the fastening portion 73 of a support 71 that constitutes the scaffolding. The support 71 is made of metal with a circular cross section, and the fastening portion 73 is integrated into the side peripheral surface of the support 71. The fastening portion 73 is U-shaped when viewed from above, and both ends of the fastening portion 73 are referred to as side plates 74, and the portion connecting the tips of the side plates 74 is referred to as the front plate 75. The fastening portion 73 is wedge-shaped, approaching the support 71 as it moves downward, and can support scaffolding boards and the like without loosening on the inside.

[0024] The sheet holder is composed mainly of the main body 11, and the largest area of ​​the main body 11 is the wall 15 which is generally upright. The upper jaw 12 protrudes from the upper end side of the wall 15 toward the support 71, and the lower jaw 16 protrudes from the lower end side of the wall 15 toward the support 71. The wall 15 is not simply flat, and the side of the wall 15 facing the support 71 is inclined to correspond to the front plate 75, so that the wall 15 can contact the front plate 75. The opposite side is a vertical surface in consideration of the attachment of the sheet 81, and the wall 15 inevitably becomes thicker toward the bottom. In addition, the upper jaw 12 rests on the top surface of the front plate 75 and plays a role in transmitting the downward load acting on the sheet holder to the fastening portion 73, and the tip of the upper jaw 12 passes the front plate 75 and reaches the inside of the fastening portion 73.

[0025] The lower jaw 16 protrudes to face the bottom surface of the front plate 75, and furthermore, a lower hanging piece 17 protrudes from the tip of the lower jaw 16. The lower hanging piece 17 protrudes upward and fits inside the fastening part 73. Therefore, a bottom groove 18 into which the front plate 75 is inserted is formed between the wall part 15 and the lower hanging piece 17, but in order to prevent loosening when the sheet holder is incorporated into the fastening part 73, the width of the bottom groove 18 is kept to a necessary minimum, and the lower hanging piece 17 necessarily comes into contact with the inner surface of the fastening part 73.

[0026] The upper hook piece 23 in this figure is a flat part that is inserted into the guide groove 13 formed in the upper jaw 12, and an oblong hole 24 is formed in the center of the upper hook piece 23 to allow it to move within a certain range relative to the upper jaw 12. A horizontal hole 14 is formed in the center of the upper jaw 12, penetrating both side surfaces, and the horizontal hole 14 intersects with the guide groove 13 midway, into which a fixed shaft 25 is fitted. When the upper hook piece 23 is inserted into the guide groove 13, the horizontal hole 14 and the oblong hole 24 can be aligned without any steps, and the fixed shaft 25 penetrates the oblong hole 24, making it impossible for the upper hook piece 23 to be removed from the upper jaw 12. However, the upper hanging piece 23 can move within a certain range, and when the upper hanging piece 23 is moved upward, its lower part is accommodated in the guide groove 13, but when the upper hanging piece 23 is moved downward, it protrudes from the upper jaw 12, and the front panel 75 can be sandwiched between the wall portion 15 and the upper hanging piece 23.

[0027] When the wall 15 is in contact with the front plate 75, the upper hanging piece 23 is arranged so that it can come into contact with the inner surface of the fastening portion 73. Therefore, when the lower part of the front plate 75 is inserted into the bottom groove 18, the upper jaw 12 is placed on the front plate 75, and then the upper hanging piece 23 is moved downward, the upper part of the front plate 75 is sandwiched between the wall 15 and the upper hanging piece 23, and the sheet holder is in a state of embracing the fastening portion 73, and cannot be removed from the fastening portion 73. In order to allow the upper hanging piece 23 to move smoothly, even when the upper hanging piece 23 is moved downward, the entire upper area of ​​the upper hanging piece 23 is not accommodated in the guide groove 13, but protrudes from the upper jaw 12 to a certain extent. Naturally, the upper hanging piece 23 and the lower hanging piece 17 are not limited to the configuration shown in this figure.

[0028] Two support shafts 32 protrude from the wall portion 15 in the opposite direction to the support pillar 71, and the sheet 81 can be held by inserting the support shafts 32 into the eyelets 82 of the sheet 81. In order to prevent the inserted sheet 81 from falling off, a regulating piece 36 is incorporated inside each support shaft 32. The regulating piece 36 is a simple plate-like piece and is accommodated in a vertical groove 33 formed in the middle of the support shaft 32. The vertical groove 33 is formed to connect the uppermost and lowermost parts of the side peripheral surface of the support shaft 32 and extends along the axial direction of the support shaft 32. However, the tip side of the support shaft 32 does not reach the lowermost part, but is terminated just before it, thereby limiting the range in which the regulating piece 36 falls. A side peripheral hole 34 is formed on the side peripheral surface of the support shaft 32, and a central shaft 37 is fitted into it. The peripheral side hole 34 intersects with the vertical groove 33, and by inserting a central shaft 37 into the restricting piece 36, the restricting piece 36 becomes swingable about the central shaft 37.

[0029] When the central shaft 37 is fitted into the side peripheral hole 34 after the restricting piece 36 is accommodated in the vertical groove 33, the restricting piece 36 falls by its own weight and projects from the side peripheral surface of the support shaft 32, functioning as a retainer for the eyelet 82. Therefore, when the restricting piece 36 is in the dropped state, its surface closest to the wall portion 15 must stand upright like a cliff to reliably prevent the eyelet 82 from moving. However, the section from there toward the tip of the support shaft 32 is inclined, so that when the eyelet 82 is moved toward the back of the support shaft 32, the restricting piece 36 is naturally pushed up by contact with the eyelet 82.

[0030] In this figure, two support shafts 32 are arranged side by side, so that two sheets 81 adjacent in the horizontal direction can be held together. At the base of the two support shafts 32, a back plate 31 is provided to connect them. The back plate 31 serves to prevent the sheet 81 from contacting the wall 15, and the sheet 81 is disposed between the restricting piece 36 and the back plate 31. In addition, both the fixed shaft 25 and the central shaft 37 cannot be removed after being fitted, so that the upper hanging piece 23 and the restricting piece 36 do not necessarily separate during use. In addition, the main body 11, which is composed of the wall 15, the upper jaw 12, the lower jaw 16, the lower hanging piece 17, the support shafts 32, and the back plate 31, can be molded as a single unit.

[0031] The fastener 41 is a part used separately from the main body 11, and is composed of a base plate 51 and a pressing body 61. A pair of fasteners 41 can connect two adjacent sheets 81 vertically. The base plate 51 is strip-shaped, and has an elongated connecting hole 54 formed at its upper part, and a connecting hole 52 formed below it, but the connecting hole 54 and the connecting hole 52 are connected, and the boundary between the two is narrowed like a strait. A large hole 56 is formed at the bottom of the base plate 51, and a small hole 57 is formed above it, but the large hole 56 and the small hole 57 are connected, and the small hole 57 is elongated. In addition, a slope 58 is formed on one side of the base plate 51 so as to protrude from the surroundings. The slope 58 has a triangular cross section with the lower end at the top, and is arranged so as to overlap the small hole 57.

[0032] The pressing body 61 is composed of a U-shaped joint plate 62 at its center, with a fulcrum pin 64 protruding from one end and a movable pin 66 protruding from the other end, both of which have a circular cross section, and flange-like flanges 65, 67 at each end. The connecting hole 52 of the base plate 51 is large enough for the flange 65 on the fulcrum pin 64 side to pass through, but the connecting hole 54 can only accommodate the fulcrum pin 64, and the flange 65 cannot pass through it. Furthermore, the strait-like portion at the boundary between the connecting hole 52 and the connecting hole 54 allows the fulcrum pin 64 to pass through as the base plate 51 elastically deforms. Therefore, after the fulcrum pin 64 is accommodated in the connecting hole 52, when the fulcrum pin 64 is moved to the connecting hole 54, the pressing body 61 cannot be separated from the base plate 51. However, the pressing body 61 can move along the connecting hole 54, and the length of the fulcrum pin 64 is greater than the thickness of the base plate 51, so the pressing body 61 can move freely relative to the base plate 51.

[0033] After the substrate 51 and the pressing body 61 are integrated, when the fulcrum pin 64 is moved below the connection hole 54, the flange 67 on the movable pin 66 side is aligned with the large hole 56, and in this state the movable pin 66 is accommodated in the large hole 56, and when the pressing body 61 is then moved upward, the movable pin 66 is accommodated in the small hole 57, so that the movable pin 66 also cannot be detached from the substrate 51. When the fastener 41 is actually used, the grommets 82 of the vertically adjacent sheets 81 are aligned, and then the pressing body 61 is inserted into the upper grommet 82 with the movable pin 66 at the front, and then the pressing body 61 is also inserted into the lower grommet 82, and finally the movable pin 66 is accommodated in the small hole 57, so that the upper and lower sheets 81 are connected via the fastener 41. At that time, the flange 67 on the movable pin 66 side rises onto the inclined surface 58, and the substrate 51 and the pressing body 61 approach each other, so that the sheet 81 is sandwiched between them, and the reaction force prevents the movable pin 66 from falling into the large hole 56.

[0034] After two sheets 81 are connected via the fastener 41, the support shaft 32 is inserted into the connecting hole 52 of the base plate 51, and when the base plate 51 reaches the back of the regulating piece 36, the fastener 41 becomes unable to be detached from the support shaft 32, and the attachment of the upper and lower two sheets 81 is inevitably completed. In the sheet holder shown in this figure, four sheets 81 can be attached by using the fasteners 41 on each of the support shafts 32. The connecting hole 52 is sized to accommodate the support shaft 32 without loosening, and the connecting hole 54 is located above the connecting hole 52, so that the function of the regulating piece 36 is not impaired by the connecting hole 54.

[0035] 2 shows the process of fitting the sheet holder of FIG. 1 into the fastening part 73. Prior to fitting the sheet holder into the fastening part 73, as shown in the upper part of this figure, the upper hanging piece 23 is pulled upward and its lower part is accommodated in the guide groove 13. Then, the sheet holder is brought close to the fastening part 73, and first, as shown in the lower left part of the figure, the lower part of the front plate 75 of the fastening part 73 is fitted into the bottom groove 18, the upper jaw 12 is placed on the top surface of the front plate 75, and the wall part 15 is brought into contact with the front plate 75.

[0036] Thereafter, as shown in the lower right of the figure, the upper hanging piece 23 is moved downward and brought into contact with the inner surface of the fastening portion 73. This brings the sheet holder into a state in which it embraces the fastening portion 73, and it is integrated with the fastening portion 73 without loosening. However, if the upper hanging piece 23 is moved upward, it can be detached from the fastening portion 73. Note that it is desirable to incorporate the sheet holder into the fastening portion 73 without loosening, and the gap between both the upper hanging piece 23 and the lower hanging piece 17 and the inner surface of the fastening portion 73 is usually kept to a minimum.

[0037] Fig. 3 shows the process of attaching two sheets 81 after the sheet holder of Fig. 1 has been incorporated into the fastening portion 73. The two sheets 81 here are adjacent to each other in the horizontal direction, with the eyelets 82 of both sheets lined up at the same height, with the eyelet 82 of one sheet 81 inserted into one support shaft 32, and the eyelet 82 of the other sheet 81 inserted into the other support shaft 32. The relationship between the regulating piece 36 and the eyelet 82 is shown at the bottom of the figure, with the range of the regulating piece 36 that protrudes from the support shaft 32 being wedge-shaped, and the protrusion of the regulating piece 36 increasing from the tip side to the base side of the support shaft 32. Therefore, when the support shaft 32 is inserted into the eyelet 82, the regulating piece 36 is pushed up by the eyelet 82, but after the eyelet 82 reaches a position deeper than the regulating piece 36, the regulating piece 36 naturally falls, and the eyelet 82 becomes sandwiched between the regulating piece 36 and the back plate 31, making it impossible to remove it from the sheet holder.

[0038] Fig. 4 shows the state in which the sheet 81 has actually been attached after Fig. 3. In the upper part of the figure, the support shaft 32 is inserted into the eyelet 82 of only one of the sheets 81, and the restricting piece 36 comes into contact with the eyelet 82, making it impossible for the sheet 81 to be removed. And in the lower part of the figure, the sheet 81 is attached to both of the two support shafts 32. Note that in reality, a plurality of fastening parts 73 are arranged on one support post 71, and by incorporating a sheet holder into each fastening part 73, the sheet 81 can be attached without loosening.

[0039] Fig. 5 shows the details of the fastener 41 depicted in Fig. 1. Fastener 41 is a component composed of a base plate 51 and a pressing body 61, and can be handled separately. The upper part of this figure shows the base plate 51 and the pressing body 61 in a separated state, with a linking hole 52 and a connecting hole 54 formed in the upper part of the base plate 51, and the linking hole 52 and the connecting hole 54 connected via a narrowed portion like a strait. Also, a large hole 56 and a small hole 57 are formed in the lower part of the base plate 51, and the two are connected.

[0040] The pressing body 61 is composed mainly of a joint plate 62 cut into a U-shape, and a fulcrum pin 64 and a movable pin 66 protrude from the end of the joint plate 62, both of which are provided with flange-like flanges 65, 67 at their ends. In addition, a slope 58 is formed on one surface of the base plate 51. The slope 58 is disposed so as to overlap with the small hole 57, and the flange 67 adjacent to the movable pin 66 comes into contact with the slope 58, thereby drawing the pressing body 61 to the base plate 51.

[0041] The middle part of the figure shows the process of integrating the substrate 51 and the pressing body 61. In this process, the flange 65 adjacent to the fulcrum pin 64 is first accommodated in the connecting hole 52, and then the flange 65 is protruded from the connecting hole 52 to accommodate the fulcrum pin 64 in the connecting hole 52. Next, the pressing body 61 is strongly pushed up, the boundary between the connecting hole 52 and the connecting hole 54 is elastically deformed, and the fulcrum pin 64 is accommodated in the connecting hole 54. The connecting hole 54 is of a size that the flange 65 cannot pass through, and thereafter, the pressing body 61 cannot be separated from the substrate 51. However, since the connecting hole 54 has a clearance for the fulcrum pin 64, the pressing body 61 can freely move to a certain extent relative to the substrate 51. The substrate 51 and the pressing body 61 are integrated together during manufacturing, and the integration is maintained thereafter.

[0042] The lower part of the figure shows the process in which the movable pin 66 becomes unable to be detached from the substrate 51. After the substrate 51 and the pressing body 61 are integrated, the flange 67 on the movable pin 66 side is brought close to the large hole 56, and the flange 67 passes through the large hole 56, so that the movable pin 66 is accommodated in the large hole 56. When the pressing body 61 is then moved upward, the movable pin 66 is accommodated in the small hole 57, so that the movable pin 66 also becomes unable to be detached from the substrate 51, and the flange 67 rises on the inclined surface 58, so that the substrate 51 and the pressing body 61 approach each other. In this state, the joint plate 62 is U-shaped to prevent it from covering the connecting hole 52. Although the material of the fastener 41 can be freely selected, the use of synthetic resin is assumed in this figure for weight reduction and other reasons.

[0043] 6 shows the process of connecting two sheets 81 using a fastener 41. The fastener 41 has the function of connecting two adjacent sheets 81 vertically, and each sheet 81 has a grommet 82, and both grommets 82 are arranged to face each other across the boundary between the sheets 81. When actually connecting two sheets 81, first, as shown in the upper left of the figure, the movable pin 66 of the pressing body 61 is moved away from the substrate 51, and then the movable pin 66 is brought closer to the upper grommet 82. Next, as shown in the upper right of the figure, the pressing body 61 is inserted into the grommet 82 with the movable pin 66 at the front, and then the movable pin 66 is moved downward to approach the lower grommet 82.

[0044] Thereafter, when the movable pin 66 or the like is inserted into the lower eyelet 82 and the extension plate 62 is further inserted into this eyelet 82, the substrate 51 approaches the upper eyelet 82, and the upper and lower sheets 81 are connected via the fastener 41, as shown in the lower left of the figure. Finally, the fastener 41 is rotated about 90 degrees to align the extension plate 62 and the sheet 81 in parallel, and the movable pin 66 is accommodated in the small hole 57 to make it impossible to separate from the substrate 51. As a result, as shown in the lower right of the figure, the two sheets 81 are sandwiched between the substrate 51 and the pressing body 61 while maintaining a state of being adjacent to each other vertically. In this state, the fulcrum pin 64 is inserted into the upper eyelet 82, the movable pin 66 is inserted into the lower eyelet 82, and the connection hole 52 is located near the boundary between the two sheets 81.

[0045] 7 shows the process in which two sheets 81 are sandwiched by the fastener 41 when the two sheets 81 are connected using the fastener 41, with the substrate 51 disposed in front of the sheets 81. As depicted in the upper part of the figure, the substrate 51 is disposed so as to straddle the two sheets 81, and the fulcrum pin 64 is inserted into the upper eyelet 82, but the large hole 56 of the substrate 51 is merely adjacent to the lower eyelet 82. Next, as depicted in the lower left part of the figure, the movable pin 66 is inserted into the lower eyelet 82, and the flange 67 adjacent to the movable pin 66 is caused to protrude from the substrate 51, so that the movable pin 66 is accommodated in the large hole 56.

[0046] Thereafter, when the substrate 51 is moved downward, the flange 67 is gradually pushed up by the slope 58. As a result, the pressing body 61 approaches the substrate 51, and the two sheets 81 are sandwiched between the substrate 51 and the pressing body 61. Furthermore, due to the reaction force, the substrate 51 cannot move, so the movable pin 66 maintains the state of being housed in the small hole 57, and the two sheets 81 can be reliably connected.

[0047] 8 shows a state in which two sheets 81 connected by a binder 41 are opposed to a support shaft 32. Two sheets 81 arranged vertically can be connected by one set of binders 41, and in this figure, two sets of two sheets 81 connected by binders 41 are arranged side by side, one set is attached to one support shaft 32, and the other set is attached to the other support shaft 32. The lower part of the figure shows the state in which the sheets 81 are viewed from the support shaft 32, with the support shaft 32 facing the board 51, and the support shaft 32 being inserted into the connecting hole 52 of the board 51. The connecting hole 52 is located near the boundary between the two sheets 81 arranged vertically, and the tip side of the support shaft 32 enters this boundary.

[0048] Figure 9 shows the state in which sheet 81 is attached to support 71 using two sets of sheet holders. Here, fastening parts 73 are arranged in two places, one above and one below, and each has a sheet holder built in. The upper sheet holder uses two sets of binding devices 41, as shown in Figure 8 above, and attaches four sheets 81 together. On the other hand, the lower sheet holder has support shaft 32 inserted into eyelets 82 of sheet 81, as shown in Figure 4 above, and attaches two sheets 81 lined up next to each other. [Explanation of symbols]

[0049] 11 Main unit 12 Upper jaw 13 Guide groove 14 Side Cave 15 Wall 16 Lower Jaw 17 Underlay 18 Bottom groove 23 Top cover 24 Oval Hole 25 Fixed axis 31 Back plate 32 Support shaft 33 Vertical groove 34 Side hole 36 Regulatory piece 37 Center axis 41 Binding tool 51 Substrate 52 Connection hole 54 Connection hole 56 Longshot 57 Small hole 58 Slope 61 Pressing body 62 Joint plate 64 Fulcrum pin 65 Flange (adjacent to fulcrum pin) 66 Movable Pin 67 Flange (adjacent to movable pin) 71 Pillar 73 Fastening section 74 Side plate 75 Front plate 81 seats 82 Eyelet

Claims

1. A sheet holder that is incorporated into a fastening portion (73) of a support (71) and used to hold a sheet (81), The fastening member has a wall portion (15) facing the front plate (75) of the fastening portion (73), an upper jaw (12) contacting the top surface of the fastening portion (73), a lower jaw (16) facing the bottom surface of the fastening portion (73), an upper hanging piece (23) protruding downward from the upper jaw (12), a lower hanging piece (17) protruding upward from the lower jaw (16), a support shaft (32) protruding from the wall portion (15) in the opposite direction to the support post (71), and a regulating piece (36) capable of protruding downward from the side peripheral surface of the support shaft (32), Either the upper hanging piece (23) or the lower hanging piece (17) is movable relative to the upper jaw (12) or the lower jaw (16). When both the upper hanging piece (23) and the lower hanging piece (17) come into contact with the inner surface of the fastening portion (73), the entirety becomes unable to be detached from the fastening portion (73). In addition, when either the upper hanging piece (23) or the lower hanging piece (17) is pulled away from the fastening portion (73), the entirety becomes detachable from the fastening portion (73). The regulating piece (36) is housed inside the support shaft (32) and is movable relative to the support shaft (32), and the regulating piece (36) falls under its own weight, causing it to protrude from the support shaft (32), and further, the eyelet (82) of the sheet (81) inserted into the support shaft (32) reaches deeper than the regulating piece (36), making the sheet (81) unable to be removed, in this sheet holder.

2. A fastener (41) consisting of a base plate (51) and a pressing body (61) is used, a fulcrum pin (64) protrudes from one end of a joint plate (62) constituting the pressing body (61), a movable pin (66) protrudes from the other end, both the fulcrum pin (64) and the movable pin (66) are provided with flanges (65, 67) at their ends, and the fulcrum pin (64) is attached to the base plate (51) so as not to be detached, The substrate (51) is formed with a large hole (56) into which the flange (67) of the movable pin (66) can be inserted, a small hole (57) connected to the large hole (56), and a connecting hole (52) for inserting the support shaft (32), and the small hole (57) is sized so that the flange (67) of the movable pin (66) cannot pass through. When the eyelets (82) of the two sheets (81) are adjacent to each other, a fulcrum pin (64) is inserted into one eyelet (82) and a movable pin (66) is inserted into the other eyelet (82), and the movable pin (66) is further accommodated in a small hole (57), whereby the two sheets (81) are sandwiched between the substrate (51) and the pressing body (61); A sheet holder as described in claim 1, characterized in that in this state, the support shaft (32) is inserted into the connecting hole (52) of the base plate (51) and the base plate (51) reaches further back than the regulating piece (36), making the sheet (81) unable to be removed.

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