JP7295994B2 - Fixture and panel mounting structure - Google Patents

Description

The present invention relates to fixtures and panel mounting structures.

Patent Literature 1 describes a method of attaching an exterior member to a longitudinal furring strip using a pair of self-drilling screws, a hat-shaped mounting metal fitting in cross section, and a pair of nuts.

In this method, a pair of self-drilling screws are passed through the exterior material, and the vertical furring strips hold the mounting base metal fittings so that the pair of self-drilling screws are inserted into the pair of mounting pieces of the mounting base metal fittings, Fix a pair of self-drilling screws with a pair of nuts.

Japanese Patent No. 2647612

By the way, in the method described in Patent Document 1, the exterior material is supported from the front side by small portions such as respective heads of a pair of self-drilling screws.

Therefore, in this method, when a negative pressure is generated on the front side of the exterior material due to the influence of the wind, etc., and the exterior material is pulled toward the front side, the portion of the exterior material that the head of the self-drilling screw comes into contact with is locally damaged. This part may become dented if a load is applied to it.

In this case, a gap is formed between the exterior material pulled to the front side and the pair of mounting pieces of the mounting bracket, and the exterior material is sandwiched and supported by the pair of self-drilling screw heads and the pair of mounting pieces. The state will be canceled, and there is a risk that the strength of attachment of the exterior material to the vertical furring strip will be reduced.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to propose a mounting fixture and a panel mounting structure capable of suppressing deterioration in mounting strength of a panel to a rod-shaped base material of a building.

A fixture according to one aspect of the present invention is a fixture for attaching a panel having a grooved portion at one end of its front surface to a rod-shaped base material of a building.

In one aspect, the fixture includes a first mounting member that is mounted so as to penetrate the panel, a second mounting member that is mounted on the base material, and a fixing member that fixes the first mounting member and the second mounting member. And prepare.

The first mounting member includes a long plate portion configured to be accommodated in the grooved portion, and a bolt configured to protrude from a portion of the panel-side surface of the long plate portion and penetrate the panel. including. The bolt has a shaft portion located closer to the panel than the long plate portion, and does not have a head portion located on the side opposite to the panel side than the long plate portion. The second mounting member includes a hooking portion hooked on the base material, and an insertion portion extending from the hooking portion and through which the bolt is inserted. The fixing member includes a nut attached to the bolt inserted through the insertion portion.

A panel mounting structure according to one aspect of the present invention includes the mounting fixture, and a pair of panels mounted to the base material by the mounting fixture in a state where the ends thereof are connected to each other.

One panel of the pair of panels is the panel having the grooved portion on the front side portion of the end portion. The other panel of the pair of panels is a separate panel having a cover portion on the front side portion of the end portion thereof.

The long plate portion housed in the grooved portion is covered with the covering portion.

A fixture according to one aspect of the present invention can suppress a decrease in mounting strength of a panel to a rod-shaped base material of a building.

A panel mounting structure according to one aspect of the present invention can suppress a decrease in mounting strength of a panel to a rod-shaped base material of a building.

FIG. 1 is a side sectional view showing a panel mounting structure using a mounting fixture according to one embodiment of the present invention. 2A and 2B are diagrams showing the main part of the same panel mounting structure, FIG. 2A is an enlarged side cross-sectional view of the A part of FIG. 1, and FIG. 2B is a cross section taken along line BB of FIG. It is a diagram. FIG. 3 is an exploded perspective view showing a fixture of the panel mounting structure of the same. FIG. 4 is an exploded perspective view showing a modified example of the fixture same as the above.

The following embodiments relate to a fixture and a panel mounting structure, and more particularly to a fixture for mounting a panel on a rod-shaped base material of a building, and a panel mounting structure provided with this fixture.

(1) Overview FIGS. 1 to 3 show a fixture 2 of one embodiment. The fixture 2 is for attaching the panel 3 to the rod-shaped base material 1 of the building. Hereinafter, based on the mounting state shown in FIG. 1, the side where the panel 3 is located with respect to the base material 1 is defined as the front side, the opposite side is defined as the rear side, and the horizontal direction perpendicular to the front-back direction is the left-right direction. , each configuration will be described.

(2) Description of Each Configuration (2-1) Backing Material The backing material 1 is a rod-shaped member having a longitudinal direction in the vertical direction, such as a pillar or a vertical furrings, which constitutes the skeleton of a building. The panel 3 is attached via a fixture 2 to each of a plurality of base materials 1 arranged in a line with a gap in the lateral direction (horizontal direction). The plurality of substrates 1 is either a plurality of posts, or a plurality of longitudinal furrings, or a combination of at least one post and at least one longitudinal furring.

(2-2) Panel The panel 3 is a sandwich panel used as an exterior material, an interior material, or the like. In this embodiment, the panel 3 is a substantially rectangular plate-like panel whose longitudinal direction is the horizontal direction, whose lateral direction is the vertical direction, and whose thickness direction is the front-rear direction. The length of the panel 3 in the horizontal direction is, for example, 3 to 7 m.

The panel 3 has a cover portion 11 protruding downward on the front side portion (front end portion) of the lower end portion thereof. The panel 3 has a convex portion 12 projecting downward at the central portion in the front-rear direction of the lower end portion thereof. The lower end of the cover portion 11 is located below the lower end of the convex portion 12 . The panel 3 has a second cover portion 13 protruding downward on the back side portion (rear end portion) of the lower end portion thereof.

The panel 3 has a recessed stepped portion 14 opened upward and forward on the front side portion (front end portion) of the upper end portion thereof. The panel 3 has a concave portion 15 that is open upward at the central portion in the front-rear direction of the upper end portion thereof.

The recessed stepped portion 14 is positioned on the front side of the recessed portion 15 and extends below the recessed portion 15 . A recessed line portion 16 recessed toward the base material 1 (that is, backward) is provided in a portion of the recessed stepped portion 14 below the recessed portion 15 . That is, the panel 3 has the grooved portion 16 on the front side portion (front end portion) of the upper end portion thereof.

The panel 3 is a sandwich panel in which a core material 19 is sandwiched between two metal skins 17,18. Each of the metal skins 17 and 18 is formed into a desired shape by rolling or pressing a flat metal plate. The flat metal plate has a thickness of about 0.27 to 1.6 mm, and is a coated steel plate, a galvanized steel plate, an aluminum-zinc alloy plated steel plate, a Galvalume steel plate (registered trademark), an SGL (registered trademark) steel plate, or the like. but not limited to this.

The core material 19 is a resin foam, a fibrous inorganic material, or a combination thereof, and has heat insulation and fire resistance. The resin foam is, for example, polyisocyanurate foam, urethane foam, phenol foam, or the like. The fibrous inorganic material is, for example, one in which a plurality of block bodies made of rock wool, glass wool, or the like, fixed with a binder or the like are arranged and arranged in the form of one sheet. Among the core members 19 , the core member positioned at the panel outer peripheral portion is, for example, an inorganic material with high fire resistance such as gypsum or calcium silicate.

As shown in FIG. 2A, the recess 15 has a first side wall 150 formed by bending the upper end portion of the metal skin 17 into a predetermined shape, and a second side wall 151 formed by bending the upper end portion of the metal skin 18 into a predetermined shape. including. The interior of each of side walls 150 and 151 is hollow and not filled with core material 19 . The bottom surface (the surface facing forward) of the grooved portion 16 is located behind the front surface of the first side wall 150 .

The convex portion 12 is composed of a lower tip portion of the metal skin 17, a lower tip portion of the metal skin 18, and a core material 19 positioned therebetween. The cover part 11 is formed by bending a part of the metal outer skin 17 into a U shape, and the inside thereof is hollow and is not filled with the core material 19 . The grooved portion 16 is formed by bending a portion of the metal skin 17 and is continuous with the first side wall 150 .

As shown in FIGS. 2A and 2B , the panel 3 is provided with a through hole 20 penetrating from the grooved portion 16 toward the base material 1 . The number of through-holes 20 formed in the panel 3 corresponds to the number of substrates 1 to which the panel 3 is attached, which is twice the number of substrates 1 in this embodiment. Formation of the through-holes 20 is performed, for example, at a construction site. Note that the formation of the through holes 20 may be performed at the panel 3 manufacturing factory.

As shown in FIG. 1, a plurality of panels 3 are attached to the front surface of the base material 1 so as to be vertically aligned with their ends connected to each other. Of the plurality of panels 3, the two panels 3 that are vertically adjacent to each other have the projections 12 of the upper panel 3 fitted into the recesses 15 of the lower panel 3, and the cover portions 11 of the upper panel 3 are located on the lower side. , and the second cover part 13 of the upper panel 3 fits in the space behind the recess 15 of the lower panel 3, thereby being connected to each other.

(2-3) Mounting Tool As shown in FIGS. 2A and 2B, the mounting tool 2 includes a first mounting member 21 attached so as to penetrate the panel 3 and a second mounting member 22 attached to the base material 1. , a fixing member 23 for fixing the first mounting member 21 and the second mounting member 22 . The fixture 2 further comprises fasteners 24 for securing the second mounting member 22 to the substrate 1 .

As shown in FIGS. 2A, 2B, and 3 , the first mounting member 21 includes a long plate portion 210 configured to be accommodated in the grooved portion 16 and a portion of the long plate portion 210 protruding from the panel 3 . and a bolt 211 configured to pass therethrough. In this embodiment, a pair of bolts 211 protrude from the long plate portion 210 . The length of the long plate portion 210 in the left-right direction is longer than the length of the base material 1 in the left-right direction. The long plate portion 210 is formed of, for example, one steel plate. The pair of bolts 211 are positioned with a gap in the left-right direction. The spacing between a pair of bolts 211 is the same as the spacing between a pair of adjacent through holes 20 provided in panel 3 . The thickness (length in the front-rear direction) of the long plate portion 210 is the same as or slightly shorter than the length in the front-rear direction from the front surface of the first side wall 150 of the recess 15 to the bottom surface of the recess 16 . The pair of bolts 211 are provided integrally with the long plate portion 210 by, for example, welding.

The second mounting member 22 includes a hooking portion 220 hooked to the base material 1 and an insertion portion 221 extending from the hooking portion 220 and through which the bolt 211 is inserted. In this embodiment, the hooks 220 are provided in a U-shape in plan view so as to sandwich the base material 1 therebetween. A pair of insertion portions 221 protrude in opposite directions (to the right and to the left) from the U-shaped hook portion 220 .

The hooking portion 220 has a rear plate portion 222 along the rear surface of the base material 1 and a pair of side plate portions 223 projecting forward from both left and right ends of the rear plate portion 222 and along the left and right side surfaces of the base material 1 . Each of the rear plate portion 222 and the pair of side plate portions 223 has a rectangular plate shape. The insertion portion 221 protrudes rightward from the front end portion of the right side plate portion 223 , and the insertion portion 221 protrudes leftward from the front end portion of the left side plate portion 223 . The length from the right end of the right insertion portion 221 to the left end of the left insertion portion 221 is substantially the same as the length of the long plate portion 210 in the left-right direction.

Each of the pair of insertion portions 221 has a rectangular plate shape in the present embodiment, and an insertion hole 224 through which the bolt 211 is inserted penetrates in the thickness direction (front-rear direction). The insertion hole 224 is an elongated hole elongated in the left-right direction. The vertical length of the insertion hole 224 is slightly larger than the bolt 211 .

The length in the front-rear direction from the front surface of the rear plate portion 222 to the front surface of the pair of insertion portions 221 is the same as the length in the front-rear direction of the base material 1 . The second mounting member 22 is formed by bending a single steel plate.

A rear plate portion 222 of the hook portion 220 is provided with a through hole 225 through which the fixture 24 is inserted. In this embodiment, the rear plate portion 222 is provided with a pair of left and right through holes 225 .

The fixing member 23 includes a nut 230 attached to the bolt 211 inserted through the insertion portion 221 . In this embodiment, the fixing member 23 includes a pair of nuts 230 because the first mounting member 21 has a pair of bolts 211 . A pair of nuts 230 is attached to each of the pair of bolts 211 inserted through the pair of insertion portions 221 . The fixing member 23 further includes a pair of washers 231 and a pair of spring washers 232 .

The fastener 24 is a tapping screw or the like. In this embodiment, fixture 2 comprises a pair of fasteners 24 .

(3) Panel Mounting Method Next, an example of a method for mounting a plurality of panels 3 on the base material 1 will be described. Below, among the plurality of panels 3, the panel 3 positioned at the top is referred to as panel P1, the panel 3 positioned second from the top is referred to as panel P2, and the panel 3 positioned third from the top is referred to as panel P3. do.

First, the panel P1 is fixed to the base material 1. As shown in FIG. The panel P1 is fixed to the base material 1 by, for example, driving fasteners (not shown) such as screw screws into the base material 1 from the concave streaks 16 at the upper end of the panel P1. In addition, the panel P1 may be fixed to the base material 1 using the fixture 2 .

Next, the panel P2 is placed in a connection position where its upper end is connected to the lower end of the panel P1, and the panel P2 is fixed to the base material 1 using the fixture 2. As shown in FIG.

Specifically, before arranging the panel P2 at the connecting position, the first mounting member 21 is mounted so as to pass through the grooved portion 16 at the upper end portion of the panel P2. In the first mounting member 21, the long plate portion 210 is housed in the grooved portion 16 with respect to the panel P2, a pair of bolts 211 are inserted through the pair of through holes 20, respectively, and the tip portions of the pair of bolts 211 are attached. is attached so as to protrude rearward from the panel P2.

By moving the panel P2 to which the first mounting member 21 is attached from below the panel P1 to above, the panel P2 is arranged at the connection position. The movement of the panel P2 is performed using a lifting device such as a crane. A panel support (not shown) is attached to the panel P2 to support it from below so that the upper end of the panel P2 is exposed, and the panel support is suspended and supported by a suspension device.

The second attachment member 22 is attached to the base material 1 while the panel P2 is arranged at the connection position. The second mounting member 22 is arranged so that the hooking portions 220 sandwich the base material 1 and is hooked on the base material 1 . The parts projecting rearward from the panel P2 are inserted therethrough.

A pair of fasteners 24 are respectively inserted into the pair of through holes 225 of the hooking portion 220 , thereby fixing the second mounting member 22 to the base material 1 . When the second mounting member 22 is fixed to the base material 1, the front surfaces of the pair of insertion portions 221 of the second mounting member 22 and the front surface of the base material 1 are substantially flush with each other.

After fixing the second mounting member 22 to the base material 1 , the first mounting member 21 and the second mounting member 22 are fixed with the fixing member 23 . The pair of washers 231, the pair of spring washers 232, and the pair of nuts 230 of the fixing member 23 are attached in this order to the pair of bolts 211 inserted through the pair of insertion portions 221, respectively. By fastening the pair of nuts 230, the first mounting member 21 and the second mounting member 22 are fixed in a state in which the long plate portion 210 and the pair of insertion portions 221 sandwich the panel P2. In this embodiment, the panel P<b>2 is also sandwiched between the long plate portion 210 and the base material 1 .

As described above, the panel P2 is attached to the base material 1 via the fixture 2. As shown in FIG. After attaching the panel P2 to the backing material 1, the panel support is removed from the panel P2, and the hanging support by the hanging device is released.

After attaching the panel P2 to the base material 1, the panel P3 is attached to the base material 1 in the same procedure.

(4) Operation and Effect In the fixture 2 of this embodiment described above, when the panel 3 is pulled toward the front side due to negative pressure or the like, the panel 3 is not a small portion such as a screw head but a long plate portion. 210 will hit, and local load can be prevented from being applied to the contact portion of the panel 3 .

Therefore, in the fixture 2 of the present embodiment, it is difficult to create a gap between the panel 3 pulled to the front side and the pair of insertion portions 221 , and the panel 3 is sandwiched between the long plate portion 210 and the pair of insertion portions 221 . The supported state can be maintained, and a decrease in the attachment strength of the panel 3 to the base material 1 can be suppressed.

In addition, in the fixture 2 of the present embodiment, since the first mounting member 21 can be fixed to the second mounting member 22 fixed to the base material 1, the change in the relative position of the panel 3 with respect to the base material 1 Furthermore, the downward load of the panel 3 can be supported by the base material 1. - 特許庁Therefore, the fixture 2 of the present embodiment is useful as a fixture used in construction for sequentially mounting a plurality of panels 3 from above.

In addition, since the fixture 2 of the present embodiment has a structure in which the pair of bolts 211 are connected via the long plate portion 210, compared to the case where the pair of bolts 211 are provided separately, the panel is attached to the base material 1. 3, the mounting strength can be improved.

In addition, in the fixture 2 of the present embodiment, the pair of bolts 211 are integral with the long plate portion 210, so when the pair of nuts 230 are tightened onto the pair of bolts 211, the bolts 211 do not rotate and the nuts 230 are tightened. Easy to tighten.

In addition, in the fixture 2 of the present embodiment, the long plate portion 210 is provided so as to be accommodated in the recessed strip portion 16, so that when connecting the lower end portion of the upper panel 3 and the upper end portion of the lower panel 3, In addition, the long plate portion 210 does not become an obstacle, and it is possible to prevent the cover portion 11 from being pushed by the long plate portion 210 and rising to the front side.

Further, in the panel mounting structure of the present embodiment, the long plate portion 210 of the first mounting member 21 attached to the panel P2 can be covered from the front side by the cover portion 11 of the panel P1. Therefore, in the panel mounting structure of the present embodiment, it is possible to prevent the long plate portion 210 elongated in one direction from being exposed and conspicuous.

(5) Modifications Subsequently, modifications of the fixture 2 and the panel mounting structure of the present embodiment described above will be described.

The fixture 2 is not limited to the structure described above, and can be modified as appropriate. 4, the first mounting member 21 has only one bolt 211, and the second mounting member 22 has an L-shaped hook 220 in a plan view and a 1 It may have two insertion portions 221 .

The plurality of panels 3 (panels P1, P2, P3) may not have the same shape, size, and material. For example, the panel P1 does not have to have a connection structure (the recessed stepped portion 14, the recessed portion 15, and the recessed streak portion 16) at the upper end. Also, the plurality of panels 3 may have different vertical lengths.

In addition, the panel mounting structure described above is a structure in which a plurality of horizontally long panels 3 arranged vertically are mounted on a vertically long rod-shaped base material 1 such as a vertical furring strip using a mounting tool 2. is not limited to For example, the panel mounting structure may be a structure in which a plurality of vertically long panels 3 aligned left and right are mounted on a horizontally long rod-shaped base material 1 such as a horizontal furring strip using fixtures 2 . In this case, the vertically long panel 3 has structures for connection (cover portion 11, convex portion 12, second cover portion 13, concave step portion 14, concave portion 15, concave streak portion 16) at its left and right ends. , and the fixture 2 is used in a posture in which the longitudinal direction of the long plate portion 210 is parallel to the vertical direction.

(6) Conclusion Like the fixtures 2 of the embodiment and its modifications described above, the fixtures 2 of the first aspect have the following features.

That is, the fixture 2 of the first aspect is a fixture 2 for attaching the panel 3 having the grooved portion 16 at one end of the front side surface to the bar-shaped base material 1 of the building.

The fixture 2 of the first aspect includes a first mounting member 21 mounted so as to penetrate the panel 3, a second mounting member 22 mounted on the base material 1, and the first mounting member 21 and the second mounting member 22. and a fixing member 23 for fixing the .

The first mounting member 21 includes a long plate portion 210 configured to be accommodated in the grooved portion 16 and a bolt 211 configured to protrude from a portion of the long plate portion 210 and pass through the panel 3 . The second mounting member 22 includes a hooking portion 220 hooked to the base material 1 and an insertion portion 221 extending from the hooking portion 220 and through which the bolt 211 is inserted. The fixing member 23 includes a nut 230 attached to the bolt 211 inserted through the insertion portion 221 .

By providing the above features, in the fixture 2 of the first aspect, when the panel 3 is pulled to the front side by the negative pressure generated by the influence of wind or the like, the long plate portion 210 contacts the panel 3 and The load applied to the contact portion can be distributed, and the contact portion can be suppressed from being dented. As a result, with the fixture 2 of the first aspect, it is possible to suppress a decrease in the mounting strength of the panel 3 to the base material 1 .

In addition to the features of the fixture 2 of the first mode, the fixture 2 of the second mode also has the following features like the fixture 2 of the embodiment and its modification described above.

That is, the fixture 2 of the second aspect further includes a fixture 24 for fixing the hook 220 to the base material 1 .

By providing the above-described features, in the fixture 2 of the second aspect, it is possible to prevent the position of the second mounting member 22 from changing with respect to the backing material 1, and as a result, the panel 3 relative to the backing material 1 can be prevented from changing. can prevent changes in the relative positions of

Moreover, like the fixture 2 of the above-described embodiment, the fixture 2 of the third aspect has the following features in addition to the features of the fixture 2 of the first or second mode.

That is, in the fixture 2 of the third aspect, the hooks 220 are provided in a U-shape so as to sandwich the base material 1 therebetween.

By providing the above-described features, in the fixture 2 of the third aspect, the hook portion 220 can sandwich the backing material 1, and the change in the relative position of the second mounting member 22 with respect to the backing material 1 can be suppressed. can.

Moreover, like the fixture 2 of the embodiment described above, the fixture 2 of the fourth aspect has the following features in addition to the features of the fixture 2 of the first or second aspect.

That is, in the fixture 2 of the fourth aspect, the first mounting member 21 includes a pair of bolts 211 protruding from part of the long plate portion 210 . The second mounting member 22 includes a hooking portion 220 provided in a U-shape so as to sandwich the base material 1 and a pair of insertion portions 221 protruding from the hooking portion 220 in opposite directions. The fixing member 23 includes a pair of nuts 230 attached to each of the pair of bolts 211 inserted through the pair of insertion portions 221 .

By providing the above features, in the fixture 2 of the fourth aspect, the long plate portion 210 can be firmly connected to the second mounting member 22 via the pair of bolts 211, and the base material 1 The mounting strength of all panels 3 can be improved. Moreover, since the mounting fixture 2 of the fourth aspect has a structure in which the pair of bolts 211 are connected via the long plate portion 210, it is easy to improve the strength of the first mounting member 21 itself.

Moreover, like the panel mounting structure of the embodiment described above, the panel mounting structure of the first aspect has the following features.

That is, the panel mounting structure of the first aspect is attached to the base material 1 by the mounting fixture 2 of any one of the first to fourth modes and the mounting fixture 2 in a state where the ends are connected to each other. a pair of panels;

One panel (panel P2) of the pair of panels is the panel 3 having a grooved portion 16 on the front side portion of the end portion thereof, and the other panel (panel P1) of the pair of panels is the It is another panel having a covering portion 11 on the front side portion of the end portion. The long plate portion 210 housed in the grooved portion 16 is covered with the cover portion 11 .

By providing the above features, in the panel mounting structure of the first aspect, the long plate portion 210 located in the grooved portion 16 of one panel 3 can be covered with the covering portion 11 of another adjacent panel. , the long plate portion 210 elongated in one direction can be prevented from being exposed on the front side of the panel 3 and conspicuous.

Although the present invention has been described above based on the embodiments shown in the accompanying drawings, the present invention is not limited to the above embodiments, and appropriate design changes are possible within the intended scope of the present invention. .

1 Backing material 2 Mounting tool 3 Panel 21 First mounting member 22 Second mounting member 23 Fixing member 24 Fixing tool 210 Long plate part 211 Bolt 220 Hook part 221 Insertion part 230 Nut 11 Cover part 16 Grooved part

Claims (4)

A fixture for attaching a panel having a grooved portion at one end of the front side surface to a rod-shaped base material of a building,
A first mounting member attached to penetrate the panel, a second mounting member attached to the base material, and a fixing member fixing the first mounting member and the second mounting member,
The first mounting member includes a long plate portion configured to be accommodated in the grooved portion, and a bolt configured to protrude from a portion of the panel-side surface of the long plate portion and penetrate the panel. and
the bolt has a shaft portion positioned closer to the panel than the long plate portion, and does not have a head portion positioned on the side opposite to the panel side than the long plate portion;
the second mounting member includes a hook portion hooked on the base material, and an insertion portion extending from the hook portion and through which the bolt is inserted,
The fixture, wherein the fixing member includes a nut attached to the bolt inserted through the insertion portion. The bolt is composed only of the shaft,
2. The fixture according to claim 1, wherein the shaft portion protrudes from a portion of the panel-side surface of the long plate portion. a surface of the long plate portion facing away from the panel is flat,
3. The fitting according to claim 1, wherein the long plate portion does not have a hole extending through the long plate portion in the thickness direction. a fixture according to any one of claims 1 to 3;
a pair of panels attached to the substrate by the fixtures with their ends connected to each other;
One panel of the pair of panels is the panel having the grooved portion on the front side portion of the end,
The other panel of the pair of panels is another panel having a cover portion on the front side portion of the end,
A panel mounting structure, wherein the long plate portion housed in the grooved portion is covered with the cover portion.

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