JP7704611B2 - Exterior wall protection fixture - Google Patents

Description

This invention relates to an exterior wall protection jig.

Buildings such as detached houses and apartment buildings have exterior walls attached to their sides. When renovating or maintaining a building, it is common to install new exterior wall materials on top of the existing exterior wall materials (see, for example, Patent Document 1). However, there are also cases where the existing exterior wall materials are removed and new exterior wall materials are installed in their place (replacing at least a portion of the exterior wall material).

JP 2020-133164 A

When removing part of an existing exterior wall material from a building, it is necessary to protect the adjacent exterior wall material (the remaining exterior wall material) from damage. However, until now, there has been no particularly effective means of protecting the adjacent exterior wall material.

Therefore, the main objective of the present invention is to contribute to improving the above-mentioned problems.

In response to the above problems, the present invention provides:
An exterior wall protection tool for protecting the side edge of an exterior wall material of a building,
The side edge portion of the exterior wall material extends linearly over the entire length direction thereof ,
A jig body having an L-shaped cross section is provided, the jig body having an edge surface protection portion for protecting the edge surface of the side edge portion and a surface protection portion for protecting the surface of the exterior wall material,
The jig body has an extension mechanism capable of adjusting a length in accordance with a length dimension of the side edge portion ,
The jig body is divided into a plurality of divided pieces, and adjacent divided pieces are detachably connected in a vertically overlapping state,
The telescopic mechanism is characterized by having a long hole provided in the surface protection portion of the divided piece that becomes the upper side when stacked, a fixing bolt erected on the surface protection portion of the divided piece that becomes the lower side when stacked, and a wing nut screwed from the tip side onto the fixing bolt that has been passed through the long hole .

According to the present invention, the above-mentioned configuration makes it possible to protect the entire length of the side edge of the exterior wall material adjacent to the exterior wall material to be removed. Also, by dividing the jig body into a plurality of divided pieces, the jig body can be easily handled, transported, and its length adjusted. The telescopic mechanism has a long hole provided in the surface protective part of the divided piece that becomes the upper side when stacked, a fixing bolt erected on the surface protective part of the divided piece that becomes the lower side when stacked, and a wing nut screwed from the tip side onto the fixing bolt passed through the long hole, so that the divided pieces can be freely connected and telescopically moved.

1A to 1D are perspective views sequentially showing a process of replacing an exterior wall material while protecting it using an exterior wall protection tool according to the present embodiment. 1(a) and 1(b) are perspective views sequentially showing a method of removing an exterior wall material using an exterior wall replacement jig, which is performed between FIGS. 1(c) and 1(d). FIG. 1 is a perspective view showing the extension and contraction of an exterior wall protection jig, in which (a) is in a contracted state and (b) is in an extended state. 1 is a perspective view showing the state of extension and contraction of an exterior wall protection jig formed by connecting two divided pieces, in which (a) is in a contracted state and (b) is in an extended state. 1A is a plan view of the intermediate split piece, FIG. 1A is a plan view of the lower split piece, FIG. 1A is a plan view of the upper split piece, FIG. 1 is a side view showing exterior wall materials of different heights (lengths), in which (a) is a low exterior wall material and (b) is a high exterior wall material.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 9 are intended to explain this embodiment.

<Configuration> The configuration of this embodiment is explained below.

Figures 1(a) to (d) are partial perspective views of the exterior wall 2 of a building 1. In the figure, the exterior wall 2 is composed of three exterior wall materials 3 to 5. The exterior wall materials 3 to 5 are, for example, tile-like. Adjacent exterior wall materials 3 to 5 are slightly separated from each other by joints 6.

Renovation and maintenance may involve, for example, removing the middle exterior wall material 4 from the exterior wall 2, leaving the exterior wall materials 3 and 5 on both sides as they are.

The building 1 can be anything, such as a detached house or an apartment building. In this embodiment, the building 1 is a unit building. A unit building is a building 1 that can be constructed in a short period of time by transporting building units that have been prefabricated in a factory to a construction site and assembling them at the construction site.

The building unit has a box-frame unit frame in its framework, in which the upper ends of four columns are connected in a rectangular shape by four ceiling beams 26, and the lower ends of the four columns are connected in a rectangular shape by four floor beams 27. In the case of a unit building, the exterior wall 2 is attached to the surface facing outward (outdoors) of the building unit installed on the outer perimeter of the building 1.

The exterior wall 2 is an outer wall that constitutes the outer peripheral surface of the building 1. The exterior wall materials 3 to 5 are members that constitute the exterior wall 2. In this embodiment, the exterior wall materials 3 to 5 are installed side by side on the building 1 in an orientation that extends long in the up-down direction 13 (vertical state).
However, the exterior wall materials 3 to 5 may be oriented so as to extend horizontally (horizontally) and installed above and below the building 1.

In the figure, exterior wall materials 3 and 4 are face materials, and exterior wall material 5 is a corner material. However, the configuration of exterior wall materials 3 to 5 is not limited to this. Exterior wall materials 3 to 5 are attached from the inside of the room to wall fixing members such as studs installed on the outer perimeter of building 1 with fasteners such as rivets.

The exterior wall material 4 is removed from the side of the building 1 by working from outside the building 1 using an exterior wall replacement tool 11 as shown in Figures 2(a) and (b). At this time, an exterior wall protection tool 12 according to this embodiment is used. The exterior wall protection tool 12 is an elongated member that protects the side edge portions 15 of the exterior wall materials 3, 5 on both sides that are close to the exterior wall material 4 (side edge portion 14) to be removed over almost the entire length direction (vertical direction 13) of the side edge portions 15. Note that in the figure, the exterior wall material 5 is a surface material rather than a corner material.

The side edge 14 of the exterior wall material 4 and the side edge 15 of the exterior wall materials 3 and 5 are the sides (left and right sides) located on the left and right of the exterior wall materials 3 to 5 and extending in the up-down direction 13. The side edges 14 and 15 are installed parallel to each other with a small gap between them to form the joint portion 6.

In addition to the basic configuration described above, this embodiment may also have the following configuration:

(1) As shown in FIG. 3 (to FIG. 8), the exterior wall protection jig 12 is
It extends linearly along the side edge 15 of the exterior wall materials 3 and 5,
The jig body 23 has an L-shaped cross section and includes an edge protection portion 21 for protecting the edge surface of the side edge portion 15 and a surface protection portion 22 for protecting the surfaces of the exterior wall materials 3 to 5.
The jig body 23 has an extension mechanism 25 whose length can be adjusted to match the length dimension 24 of the side edge portion 15 (or the height dimension of the exterior wall materials 3, 5, FIG. 1).

Here, the edge surfaces are the left and right side surfaces that form the thickness of the exterior wall materials 3, 5. Alternatively, the edge surfaces are the surfaces at the side edge portions 15 of the exterior wall materials 3, 5 that face the thickness direction and the up-down direction 13 of the exterior wall materials 3, 5. The edge surface protection portion 21 is a portion that protects the edge surfaces of the exterior wall materials 3, 5, and extends in the longitudinal direction of the jig body 23 with a uniform width that is approximately the same as or slightly narrower than the width of the edge surfaces (the thickness of the exterior wall materials 3, 5). The edge surface protection portion 21 is installed in a state that is approximately in contact with the edge surfaces of the exterior wall materials 3 to 5.

The surface is the surface (exterior surface) of the exterior wall materials 3, 5 exposed to the outside of the building 1. The surface protection part 22 is a part that protects the surface of the exterior wall materials 3, 5, and extends in the longitudinal direction of the jig body 23 with approximately the same uniform width as the edge surface protection part 21. The surface protection part 22 is installed in a state where it is approximately in contact with the surface of the exterior wall materials 3, 5.

The jig body 23 is the main part of the exterior wall protection jig 12 and is made of metal or resin. The jig body 23 may be fixed to the surfaces of the exterior wall materials 3 and 5 on both sides with tape 28 (Figure 1) or the like.

The length dimension 24 of the side edge 15 is the distance from one end of the side edge 15 to the other end. In this embodiment, the length dimension 24 is the distance from the top to the bottom of the exterior wall materials 3 and 5 (height dimension). In the building 1, exterior wall materials 3 to 5 of basically the same height are used in the same part of the exterior wall 2.

As shown in Figures 9(a) and (b), for example, the exterior wall materials 3 and 5 are available in various length dimensions 24 and are used appropriately. In the figure, 26 is the ceiling beam of the building 1, and 27 is the floor beam of the building 1. The circles in the figure indicate the installation positions of the fixing devices.

For example, the low exterior wall materials 3, 5 in (a) have a length dimension 24 from the bottom of the ceiling beam 26 to the top of the floor beam 27. The high exterior wall materials 3, 5 in (b) have a length dimension 24 from the top of the ceiling beam 26 to the bottom of the floor beam 27. It is preferable to use one type of exterior wall protection jig 12 that can handle exterior wall materials 3, 5 with such various length dimensions 24. For this reason, the length of the jig body 23 is variable (Figures 4 and 5). The length of the jig body 23 refers to the distance between both ends of the jig body 23 (the distance from the top to the bottom).

The extension mechanism 25 is a mechanism that changes and adjusts the length of the jig body 23 to any desired length. The extension mechanism 25 will be described later.

(2) The jig body 23 may have a gripping portion 31 (Figure 3) in the middle of the longitudinal direction of the surface protection portion 22.

Here, the longitudinal direction is the longitudinal direction of the jig body 23 and the surface protection part 22, and is oriented in the up-down direction 13 when the exterior wall protection jig 12 is installed on the side edge part 15 of the exterior wall materials 3, 5.

The intermediate portion is the portion between both ends of the jig body 23. It is preferable to place the intermediate portion close to the center of the jig body 23 in the longitudinal direction.

The gripping portion 31 is a handle or handle for gripping the jig body 23. The gripping portion 31 is fixed integrally to the surface of the surface protection portion 22 on the side opposite the exterior wall materials 3, 5 (the outside of the building 1). The gripping portion 31 has at least a parallel portion 31a that is installed approximately parallel to the surface protection portion 22 with a required distance (enough for a hand or fingers to fit in) and a connecting portion 31b that connects the parallel portion 31a to the surface protection portion 22, making it, for example, U-shaped or L-shaped.

(3) The jig body 23 may be divided into multiple segments 41 to 43 (Figure 3). Adjacent segments 41 to 43 may be connected in a detachable manner.

The split pieces 41 to 43 are formed by splitting the jig body 23 in the longitudinal direction into at least two, and preferably into three or more. In this embodiment, the jig body 23 is split into three, the middle split piece 41 (Fig. 6) and the split pieces 42 and 43 on both sides (or top and bottom) (Figs. 7 and 8).

The middle segment 41 is the shortest. The segment pieces 42, 43 on both sides (or top and bottom) are of approximately the same shape, size, and length, except that they are oppositely oriented. The segment pieces 42, 43 on both sides (or top and bottom) are positioned so that they abut against the middle segment 41 from below. The segment pieces 41 to 43 are connected with their edge protection parts 21 and surface protection parts 22 stacked one on top of the other.

A cushioning material 44 (Fig. 6) may be attached to the surfaces of the edge surface protection portion 21 and surface protection portion 22 of the intermediate divided piece 41 that come into contact with the exterior wall materials 3 and 5. The cushioning material 44 is formed to be thicker than the upper and lower divided pieces 42 and 43, and is attached to the position of the gripping portion 31 so as not to interfere with the ends of the upper and lower divided pieces 42 and 43.

Similarly, cushioning materials 44 (Figs. 7 and 8) may be attached to almost the entire surfaces of the edge protection parts 21 and surface protection parts 22 of the upper and lower divided pieces 42, 43 that come into contact with the exterior wall materials 3, 5. These cushioning materials 44 cushion and protect the side edge parts 15 of the exterior wall materials 3, 5 when the jig body 23 is installed, preventing damage.

A required length of overlapping portion 45 is provided between adjacent segments 41, 42 and 41, 43. The segments 41 to 43 are connected around the overlapping portion 45 in a manner that allows them to be attached and detached freely. Being detachable means that they can be joined together or separated relatively easily. Depending on the situation, the segments 41 to 43 can be used separately, or they can be connected appropriately as shown in Figures 4 and 5. Figure 4 shows the three segments 41 to 43 connected together, and Figure 5 shows the segments 41 and 43 connected together. Although not specifically shown, for example, the middle segment 41 can also be used alone.

(4) The telescopic mechanism 25 may have an elongated hole 51 provided in one of the segments 41 to 43, a fixing bolt 52 erected from the other of the segments 41 to 43, and a wing nut 53 screwed from the tip side onto the fixing bolt 52 that has been passed through the elongated hole 51.

The long holes 51 are provided in the segments 41-43 that will be on the top when stacked, for example the middle segment 41 (Figure 6). The long holes 51 are a pair of through holes that are provided in the surface protection portion 22 of the middle segment 41, each extending from near both ends to near the gripping portion 31. It is preferable that the length of the two long holes 51 combined is approximately the difference in height between the highest exterior wall material 3-5 and the lowest exterior wall material 3-5 or more.

The fixing bolt 52 is provided for the segment pieces 41 to 43 that are on the lower side when stacked, for example, the segment pieces 42, 43 on both sides (FIGS. 7 and 8). The fixing bolt 52 is provided substantially perpendicular to the end (lower end or upper end) of the surface protection portion 22 on the middle segment piece 41 side of the segment pieces 42, 43 on both sides.

The wing nut 53 has two finger hooks so that it can be turned with fingers. The wing nut 53 is screwed from the tip side of the fixing bolt 52 passed through the long hole 51 with the middle split piece 41 and the upper and lower split pieces 42 and 43 overlapping each other. As a result, the overlapping part 45 that connects the split pieces 41 to 43 becomes the extension mechanism 25.

The jig body 23 becomes longer by sliding the fixing bolt 52 along the long hole 51 toward the end of the middle split piece 41. Conversely, the jig body 23 becomes shorter by sliding the fixing bolt 52 along the long hole 51 toward the center end of the middle split piece 41. The overlapping portion 45 becomes shorter when the jig body 23 is extended, and becomes longer when the jig body 23 is contracted. The amount of expansion and contraction of the split pieces 42, 43 on both sides relative to the middle split piece 41 may be the same or different.

<Function> The function of this embodiment is explained below.

For example, when removing or replacing a part of the exterior wall 2 of a building 1 for renovation or maintenance, first, as shown in FIG. 1(a), the length of the jig body 23 of the exterior wall protection jig 12 is adjusted in advance to match the height of the exterior wall materials 3 to 5. After adjusting the length, the exterior wall protection jig 12 is placed in contact with the side edge 15 (opposing the side edge 14 of the exterior wall material 4 to be removed) of the exterior wall materials 3, 5 on both sides adjacent to the exterior wall material 4 to be removed. The jig body 23 then physically protects the entire side edge 15 of the adjacent exterior wall materials 3, 5 from external forces, the exterior wall replacement jig 11, etc. The jig body 23 is attached using the joints 6 between the exterior wall materials 3 to 5. In the figure, the exterior wall protection jigs 12 are installed simultaneously on the side edges 15 of the exterior wall materials 5 on both sides, but the exterior wall protection jigs 12 may be installed sequentially on the side edges 15 on the side on which the exterior wall replacement jig 11 is used.

The length of the jig body 23 can be adjusted by adjusting the number of segments 41-43 used and by adjusting the extension mechanism 25. The jig body 23 abuts and protects the edge surfaces of the side edge portions 15 of the adjacent exterior wall materials 3, 5 with the edge surface protection portion 21, and at the same time, abuts and protects the surfaces of the adjacent exterior wall materials 3, 5 with the surface protection portion 22.

Next, as shown in FIG. 1(b), the jig body 23 fixes the surface protection part 22 to the surfaces of the exterior wall materials 3 and 5 on both sides with tape 28. The required number of tapes 28 are placed at appropriate positions so as to span between the surface protection part 22 and the surfaces of the exterior wall materials 3 and 5.

After that, as shown in Fig. 1(c), an exterior wall replacement jig 11 is inserted from the outside of the building 1 into the joint 6 between the exterior wall material 4 to be removed and the adjacent exterior wall materials 3 and 5 (Fig. 2(a)). The exterior wall replacement jig 11 is then tilted back and forth up and down while being approximately perpendicular to the joint 6 (moved in a prying motion, Fig. 2(b)). This physically destroys the fasteners such as rivets that secure the exterior wall material 4 to the building 1, and the joints between the fasteners and the exterior wall material 4, with the exterior wall replacement jig 11.

At this time, the exterior wall replacement jig 11 is moved so as to avoid contact with the jig body 23 of the exterior wall protection jig 12 as much as possible. This is repeated at the position of the fasteners while moving in one direction along the same joint 6, for example from the bottom to the top, and all the fasteners are destroyed in order, thereby removing one side edge 15 of the exterior wall material 4 from the exterior wall 2 of the building 1. After that, the opposite side edge 15 is similarly removed from the exterior wall 2 of the building 1.

Then, as shown in FIG. 1(d), the removed exterior wall material 4 is removed and a new exterior wall material is attached to the building 1 in the area where it was removed. Note that the exterior wall material 4 is supported in advance to prevent it from collapsing or falling before all of the fasteners are completely removed. This completes the renovation and maintenance of the building 1.

<Effects> This embodiment provides the following effects:

(Effect 1) The exterior wall protection jig 12 includes a jig body 23 with an L-shaped cross section having an edge surface protection portion 21 and a surface protection portion 22, and the jig body 23 may have an extension mechanism 25 that can adjust the length to match the length dimension 24 of the side edge portion 15 of the exterior wall materials 3, 5. Then, for example, when removing an existing exterior wall material 4 from a building 1, the jig body 23 is attached to the opposing side edge portion 15 of the exterior wall materials 3, 5 adjacent to the exterior wall material 4 to be removed. This allows the jig body 23 to protect the side edge portion 15 of the adjacent exterior wall materials 3, 5, and prevents damage to the side edge portion 15 of the adjacent exterior wall materials 3, 5.

In this case, by making the jig body 23 have an L-shaped cross section, the jig body 23 can protect the edge surface of the side edge portion 15 of the adjacent exterior wall materials 3, 5 with the edge surface protection portion 21, and can protect the surface of the adjacent exterior wall materials 3, 5 with the surface protection portion 22. In addition, by using the extension mechanism 25 to adjust the length of the jig body 23 to be approximately the same as the length dimension 24 of the exterior wall materials 3, 5, the entire side edge portion 15 of the adjacent exterior wall materials 3, 5 can be protected.

(Effect 2) In the exterior wall protection jig 12, the jig body 23 may have a gripping portion 31 in the middle of the longitudinal direction of the surface protection portion 22. In this way, the jig body 23 has the gripping portion 31, making it easy to hold and handle. Furthermore, holding the jig body 23 with the gripping portion 31 makes it easier to attach the jig body 23 to the side edge portion 15 of the adjacent exterior wall materials 3, 5 with tape 28.

(Effect 3) In the exterior wall protection jig 12, the jig body 23 may be divided into multiple segments 41-43, and adjacent segments 41-43 (specifically, segments 41, 42 and segments 41, 43) may be detachably connected to each other. By dividing the jig body 23 into multiple segments 41-43 in this way, the jig body 23 is no longer a single long member, making it easier to handle the jig body 23 and allowing it to be easily loaded onto a vehicle and transported. Furthermore, by using three or more segments 41-43, it is possible to change the length of the jig body 23 depending on the number of segments 41-43 connected.

(Effect 4) In the exterior wall protection jig 12, the expansion mechanism 25 may have an elongated hole 51 provided in one of the divided pieces 41 to 43, a fixing bolt 52 erected from the other of the divided pieces 41 to 43, and a wing nut 53 screwed from the tip side onto the fixing bolt 52 passed through the elongated hole 51. Then, by passing the fixing bolt 52 through the elongated hole 51 and screwing the wing nut 53, one of the divided pieces 41 to 43 can be connected to the other. In this state, by loosening the wing nut 53 and sliding the fixing bolt 52 along the elongated hole 51 and tightening the wing nut 53, the jig body 23 (one of the divided pieces 41 to 43 and the other) can be freely expanded and contracted within the range in which the elongated hole 51 is formed.

REFERENCE SIGNS LIST 1 Building 3 Exterior wall material 4 Exterior wall material 5 Exterior wall material 12 Exterior wall protection jig 15 Side edge portion 21 Edge surface protection portion 22 Surface protection portion 23 Jig body 24 Length dimension 25 Expansion mechanism 31 Grip portion 41 Divided piece 42 Divided piece 43 Divided piece 51 Slotted hole 52 Fixing bolt 53 Wing nut

Claims (3)

An exterior wall protection tool for protecting the side edge of an exterior wall material of a building,
The side edge portion of the exterior wall material extends linearly over the entire length direction thereof ,
A jig body having an L-shaped cross section and an edge surface protection part for protecting the edge surface of the side edge part and a surface protection part for protecting the surface of the exterior wall material is provided.
The jig body has an extension mechanism capable of adjusting a length in accordance with a length dimension of the side edge portion ,
The jig body is divided into a plurality of divided pieces, and adjacent divided pieces are detachably connected in a vertically overlapping state,
The exterior wall protection jig is characterized in that the extension mechanism has a long hole provided in the surface protection portion of the divided piece that becomes the upper side when stacked, a fixing bolt erected on the surface protection portion of the divided piece that becomes the lower side when stacked, and a wing nut screwed onto the tip side of the fixing bolt that has been passed through the long hole . The exterior wall protection tool according to claim 1,
The jig body is an exterior wall protection jig characterized in that it has a U-shaped or L-shaped gripping portion at the middle of the longitudinal direction on the side of the surface protection part opposite the exterior wall material, the parallel portion being installed parallel to the surface protection part with a gap therebetween, and a connecting portion connecting the parallel portion to the surface protection part. The exterior wall protection tool according to claim 1 or 2,
The exterior wall protection tool is characterized in that the divided pieces have cushioning material attached to the surfaces that come into contact with the exterior wall material .