Installation method for buffer members and wall units

Abstract

To prevent damage to items caused by interference with columns while keeping manufacturing costs down. [Solution] The cushioning member 10 is made of a cylindrical base material 11 and is attached to the end of a column P, wherein the base material 11 has a length greater than the side dimension in the cross-section of the column P, and a cutting line 12 is provided on the circumferential surface of the base material 11 so that the base end is continuous with the circumferential surface and an elastic tongue piece 13 that is wider than the cross-section of the column P is provided, and when the elastic tongue piece 13 is pulled out to the outside, two straight portions 12a of the cutting line 12 face two sides of the column P that extend parallel to each other, and the elastic tongue piece 13 is in contact with the sides of the column P between the cutting lines 12.

Description

Technical Field

[0001] The present invention relates to a buffer member and a method for installing a wall unit.

Background Art

[0002] In the prefabrication method, a wall unit in which a fitting frame is attached in advance to a panel constituting a wall surface of a building is manufactured at a factory, and the wall units are arranged and assembled between columns at a construction site (see, for example, Patent Document 1). After being manufactured at the factory, the wall units are loaded onto a truck and transported to the construction site, and are arranged between the columns while being suspended by a crane.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in some cases, a frame is attached to the wall unit so as to protrude to the outdoor side. Also, in some cases, a resin-made frame is used. When such a wall unit is arranged between columns, there is a concern that the frame of the suspended wall unit may interfere with the end of the column and damage the frame. If a buffer member that can be attached to the upper part of the column in advance is prepared and attached to the end of the column, it is possible to prevent damage to the frame even if there is interference. However, there are various cross-sectional dimensions of the columns, and a dedicated buffer member corresponding to the cross-sectional dimension of each column is required, which is not preferable in terms of manufacturing cost. Note that the above problem occurs not only when arranging a wall panel between columns, but also when arranging other articles with respect to a standing column.

[0005] In view of the above circumstances, the present invention aims to provide a buffer member and a method for installing a wall unit that can prevent damage to articles caused by interference with columns while suppressing an increase in manufacturing costs. [Means for solving the problem]

[0006] To achieve the above objective, the cushioning member according to the present invention is a cushioning member composed of a cylindrical base material and attached to the end of a column, wherein the base material has a length greater than the dimensions of the cross-section of the column, and a cutting line is provided on the circumferential surface of the base material so that the base end is continuous with the circumferential surface and an elastic tongue piece wider than the cross-section of the column is provided, wherein the cutting line faces each other at two locations on the lateral portion of the column when the elastic tongue piece is pulled outwards, and the elastic tongue piece abuts against the lateral portion of the column between the cutting lines.

[0007] Furthermore, the cushioning member according to the present invention is composed of a cylindrical base material and is attached to the end of a column, wherein the base material has two side edges extending along the axis of the cylinder, and is formed into a cylinder by bringing the two side edges close together, while being elastically expandable through both side edges, and the two side edges are provided with cutting lines at two positions where a distance greater than the dimensions of the cross-section of the column is secured between them, and one surface of the base material is provided with a bending groove in a portion that is on the extension of the cutting lines provided at corresponding positions, and by bending the base material through the bending groove, the end edge portions located on the end side of the cutting lines are positioned at two locations on the column along the longitudinal direction of the column, and the central edge portion located between the cutting lines faces the two sides of the column via the end edge portions.

[0008] Furthermore, the method for installing a wall unit according to the present invention is a method for installing a wall unit in which a frame for a door or window is attached in advance and the wall unit is suspended and placed between two columns, characterized in that the above-mentioned buffer members are attached to the ends of the two columns before the wall unit is placed. [Effects of the Invention]

[0009] According to the present invention, by providing a cutting line on a cylindrical base material, it becomes possible to attach it to the end of a column. Therefore, even for columns of different dimensions, it is possible to accommodate them by providing a cutting line at the corresponding position without having to provide a dedicated product, thereby reducing manufacturing costs and preventing damage to items such as wall units caused by interference with the column. [Brief explanation of the drawing]

[0010] [Figure 1] This diagram shows a cushioning member according to Embodiment 1 of the present invention, where (a) is an end view, (b) is a side view, and (c) is a diagram showing the unfolded state. [Figure 2] Figure 1 schematically illustrates the procedure for installing wall units using the buffer members shown. (a) shows the building before the buffer members are attached to the upper ends of the columns, (b) shows the building with the buffer members attached to the upper ends of the columns, (c) shows the building with the wall units suspended between the columns, and (d) shows the building after the wall units have been placed between the columns and the buffer members have been removed from one of the columns. [Figure 3] Figure 1 shows the cushioning member, where (a) is a diagram of the elastic tongue extended, (b) is a diagram of the cushioning member attached to the upper end of the column, (c) is a side view of the cushioning member attached to the column seen from one side, (d) is a front view of the cushioning member attached to the column, (e) is a side view of the cushioning member attached to the column seen from the other side, and (f) is a view of the cushioning member attached to the column seen from the elastic tongue side. [Figure 4] This shows a cushioning member according to Embodiment 2 of the present invention, where (a) is a perspective view and (b) is a diagram showing the member in an unfolded state. [Figure 5]Figure 4 shows the cushioning member, where (a) is a perspective view of the cushioning member folded along the bending groove, (b) is a view of one end of the cushioning member attached to the side of the column, (c) is a view of the other end of the cushioning member attached to the side of the column, and (d) is a perspective view of the cushioning member attached to the column. [Modes for carrying out the invention]

[0011] Hereinafter, preferred embodiments of the installation method for the buffer member and wall unit according to the present invention will be described in detail with reference to the attached drawings.

[0012] (Embodiment 1) Figure 1 shows a buffer member according to Embodiment 1 of the present invention. The buffer member 10 illustrated here is applied when arranging a wall unit 20 suspended by a crane between columns P at a construction site, as shown in Figure 2. The wall unit 20 is manufactured in advance at a factory and is constructed by attaching a door / window 22 to a wall panel 21. The door / window 22 has a frame and a sash made of resin and is provided so that a part of it protrudes from the exterior surface 21a of the wall panel 21. Note that the wall unit 20 is not necessarily limited to a wall panel 21 with a door / window 22 attached, but may also be a wall unit with only a frame attached. Alternatively, a wall unit constructed by providing a lintel and window sill on a unit frame made of horizontal and vertical members, and attaching the frame between the lintel and window sill may also be applied. The column P to which the buffer member 10 is attached has a rectangular prism shape with a roughly square cross-section and a tenon t on its upper end face.

[0013] The cushioning member 10 is constructed by processing a base material 11 molded from a resin such as foamed plastic. The base material 11 is cylindrical in shape with a uniform cross-sectional shape along its entire length. More specifically, the base material 11 has a nearly constant plate thickness and becomes rectangular when unfolded, and is constructed as a cylinder by winding two side edges 11a so that they are close to each other. The two side edges 11a can elastically expand apart when an external force is applied. When the external force is removed, the two side edges 11a move closer together due to the elastic restoring force, returning to their original cylindrical shape. In an unloaded state, a gap smaller than the side dimension of the column P's cross-section is maintained between the two side edges 11a. In the illustrated example, a base material 11 with a cross-sectional shape having three protrusions 11b that are convex toward the outer circumference, and two recesses 11c between these three protrusions 11b that are convex toward the inner circumference is applied. Although not explicitly shown in the diagram, the base material 11 is obtained by cutting a long, rectangular piece to an appropriate size. The length of the base material 11 is set to be longer than the length of one side in the cross-section of the column P to which it will be attached.

[0014] As shown in the figure, the cushioning member 10 is constructed by providing a cutting line 12 on the circumferential surface of the base material 11. The cutting line 12 has three straight sections that run along the three sides of the column P and have a length greater than the sides of the column P, and penetrates from the outer surface to the inner surface of the base material 11. Two opposing straight sections 12a are approximately parallel to each other and extend in a direction perpendicular to the longitudinal direction of the base material 11. The remaining straight section 12b connecting these two straight sections 12a extends along the longitudinal direction at a position close to one side edge 11a of the base material 11. The work of providing the cutting line 12 can be easily carried out even at a construction site by maintaining the base material 11 in an unfolded state and using a cutting tool such as a cutter. As shown in Figure 3(a), the cushioning member 10 constructed by providing a cutting line 12 on the base material 11 has an elastic tongue 13 whose base end is continuous with the circumferential surface of the base material 11 and can be pulled out to the outer side. When the elastic tongue 13 is pulled out to the outer circumference, a mounting hole 14 is formed on the circumferential surface of the base material 11. The mounting hole 14 is sized to allow a portion of the end of the column P to be inserted.

[0015] As shown in Figure 3(b), the buffer member 10 is attached to the top of the column P by keeping the elastic tongue 13 extended and inserting the upper end of the column P into the mounting hole 14. At this time, as shown in Figures 3(c) to 3(f), the buffer member 10 has two opposing straight sections 12a facing the two sides s1 and s2 of the column P, and the tip of the elastic tongue 13 is pressed against the third side s3 of the column P. Therefore, even if wind blows after the buffer member 10 is attached to the upper end of the column P, there is no risk of the buffer member 10 falling off the column P. The tenon t provided at the upper end of the column P is positioned inside the cylinder via the mounting hole 14, and its upper part is covered by the buffer member 10. Therefore, as shown in Figures 2(a) and 2(b), at the construction site, if the buffer members 10 are attached to the upper ends of the columns P before the wall units 20 are placed, and then, as shown in Figure 2(c), the suspended wall units 20 are placed between the columns P, even if the columns P and the fittings 22 of the wall units 20 interfere with each other along the way, there is no risk of damage to either. As shown in Figure 2(d), after the wall units 20 have been placed, the buffer members 10 can be removed from the columns P, and structural members such as beams can be attached between them. Furthermore, if the columns P have the same cross-sectional dimensions, the removed buffer members 10 can be reused by being reattached. If the cross-sectional dimensions of the columns P are different, a base material 11 of a length corresponding to the dimensions can be prepared, and a cutting line 12 corresponding to the dimensions can be provided, and it can be attached to the upper ends of the columns P using the same procedure.

[0016] In the embodiment 1 described above, a base material 11 having two side edges 11a is shown as an example, but it is also possible to construct a cushioning member using a base material that is cylindrical and does not have side edges. Furthermore, the 11 does not necessarily need to have a protruding portion 11b and a recessed portion 11c.

[0017] (Embodiment 2) FIG. 4 shows a buffer member 40 according to Embodiment 2 of the present invention. The buffer member 40 illustrated here is applied when arranging the wall unit 20 suspended by a crane at a construction site between columns P, similar to Embodiment 1, and is configured by applying the same base material 11 as in Embodiment 1. However, the dimension along the longitudinal direction of the base material 11 to be applied is set larger than that of Embodiment 1. That is, in the buffer member 40 of Embodiment 2, a base material 11 having a length such that the dimension along the longitudinal direction is three times or more the dimension of one side in the cross section of the column P is applied.

[0018] The buffer member 40 is configured by providing two cutting lines 15 respectively at the central portion 40a in the longitudinal direction on the side edges 11a on both sides of the base material 11, and providing bending grooves 16 only on the inner peripheral side surface of the portion that is an extension of the cutting lines 15. The cutting lines 15 are linear with a length of about 1 / 4 of the width of the base material 11 at positions ensuring an interval larger than the dimension of one side in the cross section of the column P between them, and penetrate from the inner peripheral side surface to the outer peripheral side surface of the base material 11. The adjacent cutting lines 15 are substantially parallel to each other. The bending groove 16 is linear and is provided so as to connect between the cutting line 15 provided on one side edge 11a and the cutting line 15 provided on the other side edge 11a, and is formed to have a depth of about 1 / 2 of the plate thickness. The operations of providing the cutting lines 15 and the bending grooves 16 can be easily carried out at a construction site by maintaining the base material 11 in a developed state and using a cutting tool such as a cutter.

[0019] As shown in Figure 5(a), the buffer member 40 configured as described above is folded along the bending groove 16 so that the two end portions 40b on both sides face each other with respect to the central portion 40a. At this time, the outer surface with the bending groove 16 is positioned to face outwards, and the edge portions 40c located on the end side of the cutting line 15 are positioned inwards from the edge portions 40d of the central portion 40a. From this state, as shown in Figures 5(b) to 5(d), the central portion 40a of the buffer member 40 is positioned to face the upper end surface of the column P, one end portion 40b faces the side surface s1 of the column P, and the other end portion 40b faces the opposite side surface s2 of the column P. At this time, the edge portions 40c of both end portions 40b are spread open, and the column P is positioned between them. In this state, the two end portions 40b of the buffer member 40, which is positioned along the longitudinal side of the column P, sandwich the column P between their respective side edge portions 40c, and the edge portion 40d of the central portion 40a also sandwiches the column P via the edge portions 40c of the two end portions 40b. Therefore, even if wind blows after the buffer member 40 has been attached to the upper end of the column P, there is no risk of it falling off. The tenon t provided at the upper end of the column P is covered at its upper portion by the central portion 40a of the buffer member 40. Therefore, at the construction site, if the buffer members 40 are attached to the upper ends of the column P before the wall units 20 are placed, and the suspended wall units 20 are then placed between the column P, even if the column P and the joinery 22 of the wall unit 20 interfere with each other along the way, there is no risk of damage to either.

[0020] In the embodiments described above, the cushioning member is exemplified using a column with a square cross-section as the mounting target. However, columns with other cross-sectional shapes, such as rectangles, polygons with pentagons or more, circles, etc., may also be used. Furthermore, the column does not need to have a tenon.

[0021] As described above, the buffer member according to the present invention is constituted by a base material formed in a cylindrical shape and is a buffer member attached to the end of a column. The base material has a length larger than the dimensions of the cross-section of the column. A cutting line is provided on the peripheral surface of the base material, so that the base end portion is continuous with the peripheral surface and an elastic tongue piece having a width larger than the cross-section of the column is provided. In a state where the elastic tongue piece is pulled outwards, the cutting line faces two locations in the side portion of the column, and the elastic tongue piece abuts against the side portion of the column between the cutting lines. According to this invention, by providing a cutting line on a base material formed in a cylindrical shape, it becomes possible to attach it to the end of a column. Therefore, without providing dedicated products for columns with different dimensions, it becomes possible to cope by providing a cutting line at a corresponding position, suppressing the manufacturing cost and preventing damage to articles such as wall units caused by interference with the column.

[0022] Further, in the present invention, in the buffer member described above, the column has a rectangular cross-section, the cutting line has three straight portions, two straight portions facing each other of the cutting line face two side surfaces of the column respectively, and the tip of the elastic tongue piece abuts against the side surface of the column. According to this invention, it becomes possible to attach it to the end of a column having a rectangular cross-section. [[ID=;10]]

[0023] Further, in the present invention, in the buffer member described above, the base material has two side edges extending along the axis of the cylinder, and is formed in a cylindrical shape by bringing the two side edges close to each other. On the other hand, it is characterized in that it can be elastically expanded through both side edge portions. According to this invention, since the base material can be expanded when performing the processing of providing the cutting line, the operation can be easily performed.

[0024] Furthermore, the cushioning member according to the present invention is a cushioning member that is made of a cylindrical base material and is attached to the end of a column, wherein the base material has two side edges extending along the axis of the cylinder, and is formed into a cylinder by bringing the two side edges close together, and is elastically expandable through both side edges, and the two side edges are provided with cutting lines at two positions that ensure a distance greater than the dimensions of the cross-section of the column between them, and one surface of the base material is provided with a bending groove in a portion that is on the extension of the cutting lines provided at corresponding positions, and by bending the base material through the bending groove, the end edge portions located on the end side of the cutting lines are positioned at two locations on the column along the longitudinal direction of the column, and the central edge portion located between the cutting lines faces the two sides of the column via the end edge portions. According to this invention, by providing a cutting line on a cylindrical base material, it becomes possible to attach it to the end of a column. Therefore, even for columns of different dimensions, it is possible to accommodate them by providing a cutting line at the corresponding position without having to provide a dedicated product, thereby reducing manufacturing costs and preventing damage to items such as wall units caused by interference with the column.

[0025] Furthermore, the method for installing a wall unit according to the present invention is a method for installing a wall unit in which a frame for a door or window is attached in advance and the wall unit is suspended and placed between two columns, characterized in that the above-mentioned buffer members are attached to the ends of the two columns before the wall unit is placed. According to this invention, by applying the above-mentioned cushioning member, it is possible to prevent damage to the frame provided on the wall unit while keeping manufacturing costs down. [Explanation of Symbols]

[0026] 10,40 Cushioning member, 11 Base material, 11a Side edge, 12,15 Cutting line, 12a,12b Straight section, 13 Elastic tongue, 14 Mounting hole, 16 Folding groove, 20 Wall unit, 21 Wall panel, 21a Surface, 22 Joinery, 40a Central section, 40b End section, 40c Edge section, P Column

Claims

1. A cushioning member made of a cylindrical base material, which is attached to the end of a column, The base material has a length greater than the cross-sectional dimensions of the column. By providing a cutting line on the circumferential surface of the base material, an elastic tongue is provided whose base end is continuous with the circumferential surface and whose width is greater than the cross-section of the column. A cushioning member characterized in that, with the elastic tongue extended outward, the cutting lines face each other at two locations on the lateral portion of the column, and the elastic tongue abuts against the lateral portion of the column between the cutting lines.

2. The column has a rectangular cross-section, and the cutting line has three straight sections. The cushioning member according to claim 1, characterized in that two opposing straight portions of the cutting line each face two sides of the column, and the tip of the elastic tongue abuts against the side of the column.

3. The cushioning member according to claim 1, characterized in that the base material has two side edges extending along the axis of the cylinder, and is formed into a cylindrical shape by bringing the two side edges close together, while being elastically expandable through both side edges.

4. A cushioning member made of a cylindrical base material, which is attached to the end of a column, The base material has two side edges extending along the axis of the cylinder, and is formed into a cylindrical shape by bringing the two side edges close together, while being elastically expandable through both side edges. Cutting lines are provided on the two side edges at two positions, each maintaining a distance greater than the cross-sectional dimensions of the column, and a folding groove is provided on one surface of the base material in a portion that lies on the extension of the cutting lines provided at corresponding positions. A cushioning member characterized in that, by bending the base material through the bending groove, the end edge portions located on the end side of the cutting line are positioned at two locations on the column, each along the longitudinal direction of the column, and the central edge portion located between the cutting lines faces the two sides of the column via the end edge portions.

5. A method for installing a wall unit, which involves suspending a wall unit with a frame for a door or window already attached between two columns, A method for installing a wall unit, characterized in that, prior to arranging the wall unit, a buffer member as described in any one of claims 1 to 4 is attached to each of the ends of the two columns.

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