JP2007162415A - Eaves - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide eaves having excellent strength with the projecting length freely set, and easily constructible by one worker. <P>SOLUTION: The eaves 1 comprise an eaves plate 2, a holder 3 stuck to the external wall surface of a building to hold the base end part of the eaves plate 2 over the whole width; and a gutter-like edge plate 4 mounted to the tip edge of the eaves plate 2 over the whole width. The eaves plate 2 is composed of a plurality of intermediate plates 20 connected in the width direction in the mutually abutting state of the side end faces, and side plates 21, 22 mounted to the outer end face of the intermediate plates 20 in both side positions. Both side end faces of each intermediate plate 20 and the inside end faces of the respective side plates 21, 22 are respectively formed with engaging parts detachably engaged with the other plates. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fence provided so as to project forward from the outer wall surface of a building, and in particular, the present invention relates to a fence in which a plurality of plate members are connected to form a fence plate.

  Conventionally, as this kind of scissors, there has been proposed one in which a scissor plate is formed by connecting a plurality of plate materials in the front-rear direction so that the front end surface and the rear end surface of the plate materials to be coupled are abutted with each other (for example, patents) Reference 1). Engagement portions are formed on the front end surface and the rear end surface of each plate material, and the structure engages with the engagement portions of other plate materials. In this kind of scissors, the width of the scissors is determined by the length of the plate material, and the length of the projecting forward is determined by the width of each plate material and the number of connections.

Japanese Patent Publication No. 6-96899

  However, in the scissors having the above-described configuration, the overhang length of the overcoat is restricted by the width of the plate material, and thus it is impossible to freely set the overhang length. In addition, with a long overhang, a large number of plate members are connected in the front-rear direction, so that a large load is applied to each connecting portion, and sufficient strength cannot be obtained. Furthermore, in the case of a large ridge, it is necessary to support the both ends of the plate material with two workers during the construction, so that a large amount of labor is required for the construction of the ridge and the work becomes large.

  The present invention has been made paying attention to the above-mentioned problems, and by forming a gutter plate by connecting a plurality of plate materials in the width direction, the overhang length can be freely set and the strength is excellent. The purpose is to provide a fence that can be easily constructed.

  The scissors according to the present invention are provided so as to protrude forward from the outer wall surface of the building, and a scissor plate and a holder that is fixed to the outer wall surface of the building and holds the base end portion of the scissors plate over the entire width, And a flange-shaped edge plate attached to the leading edge of the flange plate. The saddle plate is composed of a plurality of intermediate plate members that are connected in the width direction so that the side end surfaces abut each other, and side plate members that are respectively attached to the outer end surfaces of the intermediate plate members at both side positions. Each intermediate plate is formed on both side end surfaces, and each side plate is formed on the inner end surface.

When constructing the fence, first fix the holder to the outer wall surface of the building, and then fix the base ends of all the intermediate and side plates that make up the anchor plate sequentially with the holder, then the tip of the anchor plate Attach the edge plate to the edge. In assembling the saddle plate, first, one side plate member is fixed to the holder, and then the engaging portions are engaged with each other while the side end surface of the intermediate plate member is abutted against the inner end surface of the side plate member. Fix the end to the holder. Similarly, the intermediate plate materials are connected one after another in the width direction, and finally the side plate materials are connected to complete the gutter plate.
In the scissors having the above-described configuration, the length of each plate can be freely changed, so that the overhang length of the scissors can be set freely. Moreover, since each base material hold | maintains each base end part with a holder, a big load is not applied to the connection part between board | plate materials, and sufficient intensity | strength is obtained. Furthermore, even if the ridge is wide, it is not necessary for two workers to support both ends of each plate during construction, and the construction work for the ridge can be performed by one worker.

  In a preferred embodiment of the present invention, the holder includes a holding substrate having a length corresponding to the entire width of the roof plate and fixed to an outer wall surface of a building, all the intermediate plate members constituting the roof plate, and And a fixture for individually fixing the base end portion of the side plate material to the holding substrate. According to this embodiment, the holding substrate is first fixed to the outer wall surface of the building, and the base end portions of the plate members are sequentially fixed to the holding substrate by the fixing tool, so that the plate members can be connected and fixed easily and efficiently.

  Further, in a preferred embodiment of the present invention, each of the intermediate plate materials is a metal hollow plate material formed by extrusion molding, and each intermediate plate material has a thickness and a length corresponding to the intermediate plate material. A mounting groove capable of inserting and supporting a reinforcing plate having a width and a length is formed in the length direction, and the reinforcing plate is inserted and supported in the mounting groove of each intermediate plate material. According to this embodiment, the hollow intermediate plate material is structurally reinforced by the reinforcing plate to increase the strength.

  Furthermore, in a preferred embodiment of the present invention, each of the intermediate plate members includes a support groove in a length direction capable of moving and supporting the arm mounting substrate, and the support groove of any of the intermediate plate materials The lower end of each arm suspended on the outer wall surface of the building is connected to the arm mounting substrate supported by the arm. According to this embodiment, since the arm supports the load of the saddle plate, even if the overhang is a long overhang, the load resistance is increased.

  Each of the side plate members is preferably one of at least two types of side plate members having different widths, and by preparing two or more types of side plate members having different widths in advance, Depending on the type and the number of intermediate plates to be used, the width of the gutter plate can be set finely.

  According to the present invention, the plurality of plate members are connected in the width direction to form the flange plate. Therefore, the overhang length of the flange can be freely set by changing the length of each plate member. Moreover, since a big load is not applied to a connection part, the wrinkles excellent in intensity | strength are obtained. In addition, since the worker can construct the fence alone, the work does not become large.

1 and 2 show the appearance of a bag 1 that is one embodiment of the present invention.
The ridge 1 is provided so as to protrude from the outer wall surface 10 of the building, and is a metal ridge plate 2 and a holding member that is fixed to the outer wall surface 10 of the building and holds the base end portion of the ridge plate 2 over the entire width. It comprises a tool 3 and a bowl-shaped edge plate 4 attached to the front edge of the plate 2 over the entire width.
In addition, although details will be described later, for a ridge having a large overhang length, it is possible to suspend at least two portions of the ridge plate 2 in a horizontal or nearly horizontal state using an arm as needed (FIG. 10).
The collar plate 2 and the edge plate 4 are made of metal such as aluminum, but are not necessarily made of metal as long as necessary strength can be ensured, and may be made of synthetic resin, for example.

  As shown in FIG. 3, the saddle plate 2 has a plurality of intermediate plate members 20 that are connected in the width direction so that the side end surfaces abut each other, and the side that is attached to the outer end surfaces of the intermediate plate members 20 at both sides. It consists of plate members 21 and 22. Each intermediate plate 20 and each side plate 21 and 22 are formed by extrusion of aluminum, and the inside thereof is hollow.

As shown in FIG. 4A, each of the intermediate plate members 20 includes a first engagement portion 6 on one side end surface and a second engagement portion 7 on the other side end surface. . In addition, as shown in FIG. 4 (2), one of the side plate members 21 and 22 has a first engaging portion 6 on the inner end surface, and the other side plate member 22 has As shown in FIG. 4 (3), the second engaging portion 7 is provided on the inner end face.
Each intermediate plate 20 and each side plate 21 and 22 are set to predetermined widths D and d, respectively. In this embodiment, in addition to the side plates 21 and 22 having the width d described above, as shown in FIGS. 5 (1) and (2), the side plates 21 and 22 having a width t (for example, t = 2d) larger than the width d. Is prepared in advance, and one of these two types of side plate materials is used.

The first engaging portion 6 of each intermediate plate member 20 can be engaged with and disengaged from the other intermediate plate member 20 or the second engaging portion 7 of the side plate member 22. The second engaging portion 7 of each intermediate plate 20 can be engaged with and disengaged from the first engaging portion 6 of the other intermediate plate 20 or the side plate 21.
As shown in FIGS. 4 (1) and (2), the first engaging portion 6 of each intermediate plate member 20 and side plate member 21 is provided with a shaft-like portion 60 protruding from the upper position of the side end face and at the lower position. The projecting tip 62 includes an outward projecting piece 62 having a hook-like portion 61 as a projecting tip. Further, as shown in FIGS. 4 (1) and (3), each intermediate plate member 20 and the second engaging portion 7 of the side plate portion 22 are provided with a bearing portion 70 formed at the upper position of the side end face and at the lower position. It is comprised with the latching piece 71 projected and formed inward. The shaft portion 60 of the first engaging portion 6 is fitted into the bearing portion 70 and is supported so as to freely rotate. The hook-like portion 61 of the protruding piece 62 of the first engaging piece 6 is hooked on the locking piece 71.

6 (1) to 6 (3) connect the intermediate plate 20 and the side plate 22 by engaging the first engagement portion 6 of the intermediate plate 20 and the second engagement portion 7 of the side plate 22. The procedure to do is shown.
First, after the shaft-like portion 60 of the first engaging portion 6 of the intermediate plate member 20 is fitted into the bearing portion 70 of the second engaging portion 7 of the side plate member 22 from the opening portion (FIG. 6 (1)), the shaft The intermediate plate member 20 is rotated around the fitting portion between the hook portion 60 and the bearing portion 70 (FIG. 6B), and the hook-like portion 61 of the projecting piece 62 is engaged with the tip of the locking piece 71 ( FIG. 6 (3)).
The engagement between the second engagement portion 7 of the intermediate plate member 20 and the first engagement portion 6 of the side plate member 21 is the same, and illustration and description thereof are omitted here.

Inside each intermediate plate member 20, two mounting grooves 23, 23 along the length direction are formed at substantially symmetrical positions. Each mounting groove 23 is formed such that a metal reinforcing plate 100 having a width and length corresponding to the thickness h and length L of the intermediate plate member 20 can be inserted and supported in a vertical direction. . The reinforcing plate 100 is inserted and supported in the mounting grooves 23, 23 of each intermediate plate member 20, thereby improving the strength in the length direction.
In addition, since the rib 27 for reinforcement is provided in each intermediate | middle board | plate material 20, the said reinforcement board 100 does not necessarily need to be integrated and should just be used as needed.
Further, a support groove 24 in the length direction capable of moving and supporting an arm mounting substrate 101 described later is formed inside each intermediate plate member 20.
3 to 5, reference numeral 25 denotes a screw fixing hole extending over the entire length, and is used for screwing the edge plate 4 to be described later to the leading edge of the flange plate 2.

  As shown in FIGS. 7 and 8, the holder 3 has a length corresponding to the entire width of the slab 2 and is fixed to the outer wall 10 of the building, and the slats 2 and the metal plate 8 for individually fixing the base ends of the intermediate plate 20 and the side plates 21 and 22 to the holding substrate 30, and the base end of the gutter plate 2 upward and downward. An upper cover 31 and a lower cover 32 are further included so as to cover the holding substrate 30 and the fixing portion 8 so as not to be seen. Note that both end surfaces of the holder 3 are closed by end plates 102, 102.

  The holding substrate 30 has a length substantially equal to the width of the roof plate 2, and the vertical plate portion 30 </ b> A fixed to the outer wall surface 10 of the building by the anchor bolt 103 and the base end portion of the roof plate 2 are positioned downward. The horizontal plate portion 30B to be supported is integrally formed. An engaging groove 34 that engages with one end of the upper cover 31 is formed at the upper end of the vertical plate portion 30A, and an engaging groove 35 that engages with one end of the lower cover 32 is formed at the lower end of the vertical plate 30A. Yes. Further, an engaging recess 36 that engages the other end of the lower cover 32 is formed at the front end of the horizontal plate portion 30B over the entire width. Bolt insertion holes 37 into which the anchor bolts 103 are inserted are provided at regular intervals at the lower position of the vertical plate portion 30A. In addition, bolt insertion holes 38 and 39 are formed in the upper position of the vertical plate portion 30B and the horizontal plate portion 30A in accordance with the mounting positions of the fixtures 8.

Each of the fixtures 8 has an L shape, and a bolt insertion hole 82 communicating with the bolt insertion hole 38 of the holding substrate 30 is formed in the vertical portion 80 thereof, and the bolt insertion of the holding substrate 30 is inserted in the horizontal portion 81 thereof. Bolt insertion holes 83 facing the holes 39 are respectively formed. An anchor bolt 104 for fixing a fixture is inserted into the bolt insertion hole 82, and a bolt 105 for fixing each plate member is inserted into the bolt insertion hole 83. The bolt 105 passes through a bolt insertion hole 26 formed in the base end portion of each intermediate plate member 20 and the side plate members 21 and 22 and a bolt insertion hole 39 formed in the horizontal plate portion 30B of the holding substrate 30. A nut 106 is screwed to the tip of 105.
In FIG. 7, 107 is a caulking material fitted between the upper end edge of the upper cover 31 and the outer wall surface 10 of the building, and 108 is a caulking fitted between the lower end edge of the upper cover 31 and the upper surface of the roof plate 2. It is a material. The caulking materials 107 and 108 prevent rainwater from entering. Reference numeral 33 denotes a screw fixing hole provided in each of the upper and lower covers 31 and 32 for screwing the end plate 102.

FIG. 9 shows a configuration of the above-described bowl-shaped edge plate 4. The edge plate 4 in the illustrated example includes a rear plate portion 40 that is brought into contact with the front end surfaces of the intermediate plate members 20 and the side plate members 21 and 22 constituting the flange plate 2 and is fastened by screws 46, and the rear plate portion 40. Between the front plate portion 41 and the rear plate portion 40, and the front plate portion 41 and the rear plate portion 40 between the front plate portion 41 and the rear plate portion 40. 44, and a bottom plate portion 43 for forming a second groove 45 between the rear plate portion 40 and the protruding portion 42, respectively.
End plates 47 and 47 are provided on both side end surfaces of the edge plate 4 and screwed. Each end plate 47 is formed with openings 48 and 49 communicating with the first and second groove 44 and 45.

10 and 11 show an embodiment in which two arms 5 and 5 are added to the bag 1 having the above-described configuration.
As shown in FIGS. 3 and 4, each intermediate plate member 20 constituting the saddle plate 2 is formed with a support groove 24 in the length direction capable of moving and supporting the arm mounting substrate 101. . In this embodiment, the arm mounting board 101 is inserted and supported in the support grooves 24 of the two intermediate plate members 20 at the left and right symmetrical positions, and is suspended from the arm mounting board 101 on the outer wall surface 10 of the building. The lower ends of the arms 5 and 5 are connected.

  Each arm 5 is configured to be adjustable in length, and mounting brackets 9 and 53 are attached to both ends of an arm main body 50 made of a metal pipe via screw shafts 51 and 52, respectively. Each of the screw shafts 51, 52 is attached to one end of the connecting plates 91, 54 of the mounting brackets 9, 53, and the other end is screwed into nut members 55, 56 attached to both ends of the arm body 50. The screw shafts 51 and 52 have opposite screw directions. When the arm body 50 is rotated in one direction, the screw shafts 51 and 52 protrude from both ends of the arm body 50 and the length of the arm 5 is long. Become. Further, when the arm body 50 is rotated in the opposite direction, the screw shafts 51 and 52 enter the inside of the arm body 50 and the length of the arm 5 is shortened.

  The mounting bracket 9 on the lower end side of the arm 5 bends the mounting plates 92 and 92 with respect to the connecting plate 91 by freely mounting the connecting plate 91 and the pair of mounting plates 92 and 92 on the pivot 90. It is possible. Two through holes 95 are formed in the board 94 integral with each mounting plate 92, and are tightened with nuts 97 through bolts 96, 96 to the respective through holes 95 and the through holes 101 a formed in the arm mounting board 101.

  The mounting bracket 53 on the upper end side of the arm 5 bends the mounting plates 57 and 57 with respect to the connecting plate 54 by freely mounting the connecting plate 54 and the pair of mounting plates 57 and 57 on the pivot 59. It is possible. The board 58 integrated with each mounting plate 57 is fixed to the outer wall surface 10 of the building by two anchor bolts 109 and 109.

In order to provide the wall 1 having the above structure on the outer wall surface 10 of the building, as shown in FIG. 12, first, the holding substrate 30 of the holder 3 is fixed to the outer wall surface of the building by the anchor bolt 103, and then the wall After the base end portions of all the intermediate plate members 20 and side plate members 21 and 22 constituting the plate 2 are sequentially fixed to the holding substrate 30 by the fixing tool 8, the edge plate 4 is attached to the distal end edge of the flange plate 2.
In assembling the saddle plate 2, first, the base end portion of the side plate material 22 is fixed to the holding substrate 30 of the holder 3 using the fixing tool 8 and the bolts 104 and 105, and then the side plate material 22 is fixed. The first and second engaging portions 6 and 7 are engaged with each other while the side end surface of the intermediate plate 20 is abutted against the inner end surface, and the base end portion is fixed to the holding substrate 30 of the holder 3 by the fixing tool 8. Similarly, the intermediate plate materials 20 are connected one after another, and finally the side plate materials 21 are connected to complete the roof plate 1.

  In the scissors 1 having the above-described configuration, the length L of each plate member 20 to 22 can be freely changed, so that the overhang length of the scissors 1 can be set freely. Moreover, since each base material 20-22 hold | maintains each base end part with the holder 3, a big load is not applied to the connection part between board | plate materials, and sufficient intensity | strength is obtained. Furthermore, even if the ridge is wide, it is not necessary for two workers to support both ends of each plate during construction, and the ridge 1 can be constructed by one worker.

It is a perspective view which shows the external appearance of the bag which is one Example of this invention. It is a side view of the bag of FIG. It is sectional drawing which follows the AA line of FIG. It is a front view which shows the structure of an intermediate board material and a side board material. It is a front view which shows the structure of the other side plate material from which width differs. It is a front view which shows the connection procedure of a side plate material and an intermediate plate material. It is sectional drawing which shows the holding | maintenance state of the board | plate material by a holder. It is sectional drawing which follows the BB line of FIG. 7 in the state which removed the upper and lower covers. It is sectional drawing which shows the attachment structure of an edge board. It is a perspective view of the Example with which the arm was attached. It is sectional drawing which shows the attachment state of an arm. It is a perspective view which shows the construction state of a coffin.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 庇 2 庇 plate 3 Holder 4 Edge plate 5 Arm 6, 7 Engagement part 8 Fixing device 20 Intermediate plate 21, 22 Side plate 23 Mounting groove 24 Support groove 30 Holding substrate 100 Reinforcement plate 101 Arm mounting substrate

It eaves according to the invention, which is provided so as to project forwardly from the outer wall surface of a building, and eaves plates, a holder for holding over the entire width of the base end portion of the eaves plate, the leading edge of the eave plate It consists of a bowl-shaped edge plate to be attached. The saddle plate is composed of a plurality of intermediate plate members that are connected in the width direction so that the side end surfaces abut each other, and side plate members that are respectively attached to the outer end surfaces of the intermediate plate members at both side positions. Each intermediate plate is formed on both side end surfaces, and each side plate is formed on the inner end surface. The holder includes a holding substrate that has a length corresponding to the entire width of the roof plate and is fixed to an outer wall surface of a building, and a plurality of base end portions of all the intermediate plate members and side plate members constituting the roof plate. It is fixed to the holding substrate by a fixing tool.

At the time of construction of the fence, first, the holding plate material of the holder is fixed to the outer wall surface of the building, and then, the base end portions of all the intermediate plate materials and side plate materials constituting the fence plate are sequentially fixed to the holding plate material by the fixing tool . After that, an edge plate is attached to the front edge of the plate. If constructed in this way, the connection and fixing of the plate materials can be performed easily and efficiently. In assembling the saddle plate, first, one side plate member is fixed to the holder, and then the engaging portions are engaged with each other while the side end surface of the intermediate plate member is abutted against the inner end surface of the side plate member. Fix the end to the holder. Similarly, the intermediate plate materials are connected one after another in the width direction, and finally the side plate materials are connected to complete the gutter plate.
In the scissors having the above-described configuration, the length of each plate can be freely changed, so that the overhang length of the scissors can be set freely. Moreover, since each base material hold | maintains each base end part with a holder, a big load is not applied to the connection part between board | plate materials, and sufficient intensity | strength is obtained. Furthermore, even if the ridge is wide, it is not necessary for two workers to support both ends of each plate during construction, and the construction work for the ridge can be performed by one worker.

The scissors according to the present invention are provided so as to project forward from the outer wall surface of the building, and include a metal scissors, a holder that holds the base end portion of the scissors over the entire width, It consists of a bowl-shaped edge plate attached to the tip edge. The saddle plate is composed of a plurality of intermediate plate members that are connected in the width direction so that the side end surfaces abut each other, and side plate members that are respectively attached to the outer end surfaces of the intermediate plate members at both side positions. Each intermediate plate material and each side plate material are metal hollow plate materials formed by extrusion molding. Each intermediate plate material is on both side end surfaces, each side plate material is on the inner end surface, and an engaging portion that can be engaged with and disengaged from other plate materials. There Rutotomoni is formed, and a rib for reinforcement and mounting groove along the length direction of the interior of the intermediate plate is provided. A metal reinforcing plate is inserted and supported in the mounting groove. The holder includes a holding substrate that has a length corresponding to the entire width of the roof plate and is fixed to an outer wall surface of a building, and a plurality of base end portions of all the intermediate plate members and side plate members constituting the roof plate. It is fixed to the holding substrate by a fixing tool.

At the time of construction of the fence, first, the holding plate material of the holder is fixed to the outer wall surface of the building, and then, the base end portions of all the intermediate plate materials and side plate materials constituting the fence plate are sequentially fixed to the holding plate material by the fixing tool. After that, an edge plate is attached to the front edge of the plate. If constructed in this way, the connection and fixing of the plate materials can be performed easily and efficiently. In assembling the saddle plate, first, one side plate member is fixed to the holder, and then the engaging portions are engaged with each other while the side end surface of the intermediate plate member is abutted against the inner end surface of the side plate member. Fix the end to the holder. Similarly, the intermediate plate materials are connected one after another in the width direction, and finally the side plate materials are connected to complete the gutter plate.
In the scissors having the above-described configuration, the length of each plate can be freely changed, so that the overhang length of the scissors can be set freely. Moreover, since each base material hold | maintains each base end part with a holder, a big load is not applied to the connection part between board | plate materials, and sufficient intensity | strength is obtained. Further, the hollow intermediate plate material is structurally reinforced by ribs and metal reinforcing plates to increase the strength. Furthermore, even if the ridge is wide, it is not necessary for two workers to support both ends of each plate during construction, and the construction work for the ridge can be performed by one worker. Furthermore, the holding substrate is first fixed to the outer wall surface of the building, and the base end portions of the plate members are sequentially fixed to the holding substrate by the fixture, so that the plate members can be connected and fixed easily and efficiently.

Further , in a preferred embodiment of the present invention, each of the intermediate plate members includes a support groove in a length direction capable of moving and supporting the arm mounting substrate, and the support groove of any of the intermediate plate materials The lower end of each arm suspended on the outer wall surface of the building is connected to the arm mounting substrate supported by the arm. According to this embodiment, since the arm supports the load of the saddle plate, even if the overhang is a long overhang, the load resistance is increased.

According to the present invention, the plurality of plate members are connected in the width direction to form the flange plate. Therefore, the overhang length of the flange can be freely set by changing the length of each plate member. In addition, since a large load is not applied to the connecting portion, and each intermediate plate is structurally reinforced by a reinforcing plate using ribs, it is possible to obtain a ridge having excellent strength. In addition, since the worker can construct the fence alone, the work does not become large.

Claims (5)

  A gutter provided so as to project forward from the outer wall surface of the building, a gutter plate, a holder fixed to the outer wall surface of the building and holding the base end portion of the gutter plate over its entire width, and a distal end of the gutter plate And a plurality of intermediate plate members connected in the width direction so that the side end surfaces abut each other, and the outer end surfaces of the intermediate plate members on both sides. Each of the intermediate plate members is formed on both side end surfaces, and each side plate member is formed on the inner end surface with engaging portions that can be engaged with and disengaged from other plate members.   The holder has a length corresponding to the entire width of the roof plate and is fixed to the outer wall surface of the building, and the intermediate ends of the intermediate plate and the side plate members constituting the roof plate are individually provided. The scissors according to claim 1, further comprising: a fixing tool that is fixed to the holding substrate.   Each of the intermediate plate materials is a metal hollow plate material formed by extrusion molding, and a reinforcing plate having a width and length corresponding to the thickness and length of the intermediate plate material is inserted into each intermediate plate material. 2. The scissors according to claim 1, wherein a mounting groove that can be supported and supported is formed in a length direction, and the reinforcing plate is inserted and supported in the mounting groove of each intermediate plate member.   Each of the intermediate plate members includes a support groove in the length direction capable of moving and supporting the arm mounting substrate, and the arm mounting substrate supported by the support groove of any of the intermediate plate members is attached to the outside of the building. The scissors according to claim 1 or 3, wherein the lower ends of the arms respectively suspended on the wall surfaces are connected.   The scissors according to claim 1, wherein each of the side plate materials is one of at least two types of side plate materials having different widths.

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