JP2005127010A - Fastening unit and external wall execution structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening unit and an external wall execution structure providing an external wall execution structure excellent in easy execution and external design. <P>SOLUTION: A fastening units 1 for fastening a four side-shiplap connection type external wall plate to a metallic substrate 3 fixed to a construction body are arranged in the upper and lower and right and left sides of vertical and lateral four external wall plates and have fastening metallic tools 5, under laying plates 11, engaging plates 12, and fixing screws 13. The fastening metallic tool 5 has a base plate part 51, upper legs 52, lower legs 53, supporting parts 54, upper plate fixing part 55, and lower plate fixing part 56. A recessed part 57 is formed at the upper part of the supporting part 54, the first fixing opening 58 is given in the recessed part 57. the second fixing opening 118 is formed in the under laying plate 11, the first fixing opening 58 has long shapes in the right and left sides, the fastening metallic tool 5 is fixed to the metallic substrate 3 while sliding to right and left sides against the under laying plate 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fastening unit for fastening a plurality of four-way joint-type outer wall plates to a metal base fixed to a structural frame of a building, and an outer wall construction structure using the same.

Conventionally, there is an outer wall construction structure in which a plurality of outer wall plates are fastened to a metal base fixed to a structural frame of a building (see Patent Documents 1 and 2).
In the conventional outer wall construction structure, the outer wall plate is fastened to a metal base using a fastener.

  However, in the outer wall construction structure, the left and right outer wall plates are butt-joined. Therefore, it is necessary to place a sealing material in the joint gap between the left and right outer wall plates via a hat joiner, which increases the construction cost. Furthermore, the appearance design may be impaired depending on the finish of the sealing work. Moreover, there is a possibility that the appearance designability and water leakage prevention performance may be reduced due to deterioration of the sealing material.

Therefore, it is conceivable to construct the outer wall construction structure by the so-called four-way joint joining method as the joint joining method for the left and right joining methods of the outer wall plates. In this case, the fastening metal fittings are disposed at the upper, lower, left, and right joint portions that are the joint center portions of the four outer wall plates disposed adjacent to each other.
However, since the metal base for fixing the fastener is fixed to the column (structural frame) first, the fixing position of the fastener in the left-right direction relative to the metal base is determined, and the metal base is disposed on the upper side. There is a possibility that the weight supporting force of the left and right outer wall plates cannot be made uniform.

JP 2003-129638 A JP 2003-213895 A

  This invention is made | formed in view of this conventional problem, and intends to provide the fastening unit and outer wall construction structure which can obtain the outer wall construction structure which was easy to construct and was excellent in the external appearance design property.

The first invention is a fastening unit for fastening a plurality of four-way joint-type outer wall plates to a metal base fixed to a structural frame of a building,
The fastening unit is configured to be arranged at the upper, lower, left, and right joints of the four upper, lower, left, and right outer wall plates, and is connected to the upper side of the lower outer wall plate and the lower side of the upper outer wall plate. A fastening bracket to be joined, an underlay plate that is disposed so as to overlap the back side of the fastening bracket, and that is in contact with the metal base, and that is disposed on the back side of the base plate and engages with the metal base. There are provided an engagement plate for fixing the fastener and the base plate to the metal base, and a fixing screw for screwing the fastener and the base plate to the metal base by screwing to the engagement plate. And
The fastening bracket is formed of a base plate portion that contacts the back side surface of the outer wall plate, an upper leg portion and a lower leg portion that are formed at the upper end and the lower end of the base plate portion, respectively, and contact the lower base plate, and the base plate portion. A support portion erected in the horizontal direction forward, an upper plate engaging portion bent obliquely upward from the support portion, and a lower plate engaging portion bent obliquely downward from the support portion; The substrate portion above the support portion is formed with a recessed portion that is recessed from the substrate portion, and the recessed portion has a first fixing opening through which the fixing screw is inserted,
In addition, a second fixing opening for inserting the fixing screw is formed in the base plate,
The first fixing opening has a long shape on the left and right,
The fastening bracket is configured to be fixed to the metal base while sliding to the left and right with respect to the base plate (Claim 1).

Next, the effects of the present invention will be described.
As described above, the fastening unit is disposed at the upper, lower, left, and right joints of the four outer wall plates that are joined together in a four-way manner, and can fasten the outer wall plate to the metal base. Therefore, an outer wall construction structure with a four-way agreement can be easily obtained by using the fastening unit. And since the joint part between the outer wall boards is not conspicuous, the outer wall construction structure of this four-way decision is excellent in appearance design.
Moreover, since it is not necessary to perform a joint part process especially by setting it as a four-way agreement structure, construction becomes easy and construction cost can also be reduced significantly.

  The fastening unit is formed by forming the first fixing opening in a shape that is long to the left and right. Therefore, the fastening bracket can be slid to the left and right with respect to the base plate. That is, even if the base plate in the fastening unit can be fixed only at a predetermined position in the left-right direction with respect to the metal base, the fastening bracket has a certain degree in the left-right direction with respect to the metal base. Can be fixed at any position within the range.

  As described above, according to the present invention, it is possible to provide a fastening unit capable of obtaining an outer wall construction structure that is easy to construct and excellent in appearance design.

The second invention is an outer wall construction structure in which a plurality of four-way joint-type outer wall plates are fastened to a metal base fixed to a structural frame of a building,
A fastening unit for fastening the outer wall plate to the metal base is disposed at the upper, lower, left, and right joints of the upper, lower, left and right four outer wall plates,
The fastening unit includes the following fastening bracket, an underlay plate disposed so as to overlap the back side of the fastener, an engagement plate disposed on the back side of the underlay plate, and a screw on the engagement plate. And a fixed fixing screw,
The fastening bracket is formed of a base plate portion that contacts the back side surface of the outer wall plate, an upper leg portion and a lower leg portion that are formed at the upper end and the lower end of the base plate portion, respectively, and contact the lower base plate, and the base plate portion. A support portion erected in the horizontal direction forward, an upper plate engaging portion bent obliquely upward from the support portion, and a lower plate engaging portion bent obliquely downward from the support portion; The substrate portion above the support portion is formed with a recessed portion that is recessed from the substrate portion, and the recessed portion has a first fixing opening through which the fixing screw is inserted,
In addition, a second fixing opening for inserting the fixing screw is formed in the base plate,
The first fixing opening has a long shape on the left and right,
The fastening bracket is configured to be able to be fixed to the metal base while sliding left and right with respect to the base plate,
The fastening unit engages the fastening bracket with the upper side portion of the lower outer wall plate and the lower side portion of the upper outer wall plate, causes the base plate to contact the metal base, and the engagement plate. Is engaged with the metal base, and the fixing screw and the base plate are fixed to the metal base by screwing the fixing screw into the engagement plate to fix the outer wall plate to the metal base. It is in the outer wall construction structure characterized by being (Claim 6).

Next, the effects of the present invention will be described.
As described above, the outer wall construction structure is configured such that a plurality of four-way joint-type outer wall plates are fastened to a metal base, and the fastening unit is arranged at the upper, lower, left, and right joints of the four outer wall plates. Yes. Therefore, the joint portion between the outer wall plates is not conspicuous, and an outer wall construction structure excellent in appearance design can be obtained.
Moreover, since it is not necessary to perform a joint part process especially by setting it as a four-way agreement structure, construction becomes easy and construction cost can also be reduced significantly.

Moreover, the said fastening unit forms the said 1st fixing opening part in the left-right long shape, and can slide the said fastening metal fitting to the left and right with respect to the said baseplate. That is, even if the base plate in the fastening unit can be fixed only at a predetermined position in the left-right direction with respect to the metal base, the fastening bracket has a certain degree in the left-right direction with respect to the metal base. Can be fixed at any position within the range.
Moreover, since the said outer wall construction structure uses the metal base | substrate, it is excellent in intensity | strength and durability.

  As described above, according to the present invention, it is possible to provide an outer wall construction structure that is easy to construct and excellent in appearance design.

In the first invention (invention 1), the fastening unit can be used when an outer wall construction structure for renovation is constructed. In this case, the metal base is fixed directly to an existing wall (RC, ALC, brick, block wall, etc.), or is fixed to the structural frame via the existing wall.
The metal base includes, for example, a plurality of metal runners fixed to the structural housing in a substantially horizontal direction and a plurality of metal trunk edges fixed to the plurality of metal runners in a substantially vertical direction. can do.

  Further, the outer wall plate has an upper lower part provided on the upper side part, a lower upper part provided on the lower side part, a horizontal lower part and a horizontal upper part provided on the left and right sides, and an outer wall plate having a so-called four-way joint structure. It is. And the above-mentioned four-way joint is to overlap the lower fruit of the upper outer wall plate with the upper fruit of the lower outer wall plate, and the lateral fruit of the right outer wall plate with the lower fruit of the left outer wall plate. This refers to joining the outer wall plates together.

Moreover, it is preferable that the said fastening metal fitting has the vertical standing part erected ahead in the vertical direction below the said support part (Claim 2).
In this case, when the outer wall plate is fastened to the metal base using the fastening unit, for example, the side end face of the lower left outer wall plate can be brought into contact with the vertical standing portion. That is, when the outer wall plate is fastened in order from the left, the right end surface of the outer wall plate can be brought into contact with the vertical standing portion.
Thereby, the position of the left-right direction of the said outer wall board can be match | combined correctly, and workability | operativity is improved greatly. And since the shift | offset | difference of the left and right of the outer wall board after construction can be prevented, stabilization of the outer wall construction structure over a long period of time can be aimed at.

In addition, in the first invention (invention 1) or the second invention (invention 6), the fastening metal fitting and the underlaying plate have a state in which the engagement plate is rotated in front of the fastening unit. It is preferable that the first visual recognition opening and the second visual recognition opening for visual recognition are respectively provided.
In this case, the operation of fixing the fastening unit to the metal base with screws can be easily and reliably performed.

  The fastening bracket is formed in a vertical direction at the front end of the central horizontal plate portion, and a central horizontal plate portion erected forward from the substrate portion at a substantially central portion at substantially the same height as the support portion. And the front end of the upper plate engaging portion and the front end of the lower plate engaging portion are connected by a connecting plate formed in a vertical direction. The plate is disposed in front of the central front plate portion, and an elastic member for preventing water leakage is provided on the left and right ends of the central horizontal plate portion and the central front plate portion from the upper surface of the central horizontal plate portion. Preferably, the central front plate portion is continuously disposed over the front surface (claims 4 and 9).

In this case, it is possible to discharge rainwater that falls along the joint gap between the two outer wall plates on the upper side of the fastening unit to the front of the outer wall plate.
In other words, the fastening member has the elastic member disposed on the upper surfaces of the left and right end portions of the central horizontal plate portion. For this reason, the lower side portion of the outer wall plate disposed above the fastener is in close contact with the elastic member.
Thereby, the rainwater which falls to the center horizontal board part of the said fastening metal fitting and tries to move to the left-right direction is blocked by the said elastic member.

Furthermore, the said connection board is arrange | positioned ahead of the said center front board part. Then, the rear side surface of the lower part of the upper outer wall plate comes into contact with the continuous plate. Therefore, a front gap is formed between the lower rear solid side surface of the outer wall plate and the central front plate portion.
Thereby, the space formed between the central horizontal plate portion, the elastic members at the left and right end portions thereof, and the lower side portion of the outer wall plate, along with the front gap, has a water passage that leads to the front of the outer wall construction structure. Constitute.

  Therefore, the rainwater that falls to the central horizontal plate portion of the fastening bracket and is dammed by the elastic member is positively discharged to the front of the wall surface through the water passage. Therefore, rainwater does not enter the outer wall construction structure.

In this way, by using the fastening bracket, it is possible to reliably prevent the rainwater from entering the inside of the outer wall construction structure, and reliably prevent corrosion and deterioration of the outer wall plate and the base material. Can do. The details of this flood prevention function will be described in an embodiment described later.
As the elastic member, for example, a closed-cell foam made of EPDM or the like can be used.

Further, the underlay plate is formed by forming a back rib projecting to the back surface in an annular shape or an arc shape, and an outer peripheral surface of the back rib is in front of the metal body edge constituting the metal base in the length direction thereof. It is preferable to be configured to come into contact with the opening end of the continuously formed front opening (claim 5).
In this case, the fastening unit can be fixed at an accurate position with respect to the metal barrel edge. Moreover, since the said back rib is formed in the annular | circular shape or circular arc shape, the said fastening unit can be fixed in the state which can be rotated with respect to the said metal trunk edge.

Next, in the second invention (invention 6), the fastening bracket has a vertical standing portion that is erected forward in the vertical direction below the support portion, and the fastening unit. It is preferable that the lower left or lower right outer wall plate has its side end surface in contact with the vertical standing portion (claim 7).
In this case, the position of the outer wall plate in the left-right direction can be accurately adjusted, and workability is greatly improved. And since the shift | offset | difference of the left and right of the outer wall board after construction can be prevented, stabilization of the outer wall construction structure over a long period of time can be aimed at.

Further, the underlay plate is formed by forming a back rib projecting to the back surface in an annular shape or an arc shape, and an outer peripheral surface of the back rib is in front of the metal body edge constituting the metal base in the length direction thereof. It is preferable to contact the opening end of the continuously formed front opening (claim 10).
In this case, the fastening unit can be fixed at an accurate position with respect to the metal barrel edge. Moreover, since the said back rib is formed in the annular | circular shape or circular arc shape, the said fastening unit can be fixed in the state which can be rotated with respect to the said metal trunk edge. Therefore, the outer wall construction structure can be constructed more easily and reliably.

(Example 1)
A fastening unit according to an embodiment of the present invention and an outer wall construction structure using the same will be described with reference to FIGS.
FIG. 6 is a longitudinal sectional view of the outer wall construction structure 6 cut by a cut surface passing through the support portion 54 of the fastener 5, and FIG. 11 is an outer wall construction for explaining a position where the fastening unit 1 is disposed. FIG. 14 is a front sectional view of the structure 6, and FIG. 14 is a longitudinal sectional view of the outer wall construction structure 6 cut by a cut surface passing through the central horizontal plate portion 501 of the fastener 5. 15 is a top view showing a state in which the fastening unit 1 is locked to the upper side portion 41 of the lower outer wall plate 4, and FIG. 20 is a cross-sectional view taken along the line AA in FIG. It is explanatory drawing of the drainage function of the fastening unit 1 represented.

Moreover, the dashed-two dotted line in FIG. 20 represents the outline of the front part (design surface) of each outer wall board 4. As shown in FIG. The forward portion of the code a ₂ to d ₂ exterior panel 4 shown outlined by two-dot chain line marked with includes a rear portion of the outer wall plate 4 shown outlined by solid lines indicated by symbol a ₁ to d _1, respectively It is integrated. Moreover, the code | symbol 4a, 4b, 4c, 4d represents the outer wall board 4 arrange | positioned at the fastening unit 1 used as a reference | standard at the lower left, lower right, upper left, and upper right, respectively. That is, the outer wall plate 4a~4d are each exterior panel having a contour a ₂ to d ₂ outline a ₁ to d ₁ and the front portion of the rear portion.

As shown in FIG. 2, the fastening unit 1 is for fastening a plurality of four-way joint-type outer wall plates 4 to a metal base 3 fixed to a building structure 2 of a building.
As shown in FIG. 11, the fastening unit 1 is configured so as to be disposed in an upper / lower / left / right joint 64 which is a joint center of the four outer wall plates 4 arranged vertically. As shown in FIG. 3, the fastening unit 1 includes a fastening bracket 5, an underlay plate 11, an engagement plate 12, and a fixing screw 13.

  As shown in FIG. 6, the fastener 5 is engaged with the upper side portion 41 of the lower outer wall plate 4 and the lower side portion 42 of the upper outer wall plate 4. The underlay plate 11 is disposed so as to overlap the back side of the fastening bracket 5 and abuts on the metal base 3. The engagement plate 12 is disposed on the back side of the base plate 11 and engages with the metal base 3 to fix the fastener 5 and the base plate 11 to the metal base 3. The fixing screw 13 is screwed into the engagement plate 12 to fix the fastening metal 5 and the base plate 11 to the metal base 3.

As shown in FIGS. 3, 4, and 6, the fastener 5 includes a substrate portion 51, an upper leg portion 52 and a lower leg portion 53, a support portion 54, an upper plate locking portion 55, and a lower plate. And a locking portion 56.
As shown in FIG. 6, the substrate portion 51 contacts the back side surface 46 of the outer wall plate 4. The upper leg portion 52 and the lower leg portion 53 are formed at the upper end and the lower end of the substrate portion 51, respectively, and abut against the underlay plate 11. The support portion 54 is erected in a horizontal direction forward from the substrate portion 51. The upper plate locking portion 55 is bent obliquely upward from the support portion 54, and the lower plate locking portion 56 is bent diagonally downward from the support portion 54.

In addition, a recessed portion 57 that is recessed from the substrate portion 51 is formed in the substrate portion 51 above the support portion 54, and a first fixing through which the fixing screw 13 is inserted is formed in the recessed portion 57. An opening 58 is provided.
The underlay plate 11 is formed with a second fixing opening 118 through which the fixing screw 13 is inserted.

  As shown in FIG. 4, the first fixing opening 58 has a long shape on the left and right. As shown in FIGS. 1, 7, and 8, the fastener 5 is configured to be fixed to the metal base 3 while sliding left and right with respect to the base plate 11.

  Further, as shown in FIG. 2, the metal base 3 includes a plurality of metal runners 31 fixed to the structural housing 2 in a substantially horizontal direction, and a plurality of metal runners 31 fixed to the plurality of metal runners 31 in a substantially vertical direction. And a metal barrel edge 32. In addition, the metal trunk edge 32 can also be directly fixed to the structural housing 2 (column) without using the metal runner 31.

The metal body edge 32 is formed as a long body having a substantially C-shaped cross section by extruding stainless steel to a thickness of about 1.2 mm (FIGS. 2 and 13). The metal body edge 32 may be made of iron or aluminum, and the forming method may be bending as well as extrusion.
The metal runner 31 also has the same shape as the metal trunk edge 32.

  As shown in FIG. 13, the metal runner 31 and the metal body edge 32 are each provided with a pair of plate-like back plates 311 and 321 and a pair of standing upright from the end portions in the width direction of the back plates 311 and 321. There are standing plates 311 and 321 and a pair of front plates 313 and 323 bent in a direction facing each other from the front ends of the standing plates 312 and 322.

  Further, as shown in FIGS. 11 and 12, the outer wall plate 4 includes an upper lower solid 410 provided on the upper side 41, a lower upper 420 provided on the lower side 42, and a horizontal lower actual provided on the right side 43. This is an outer wall plate having a so-called four-way joint structure having 430 and a horizontal top 440 provided on the left side portion 44. Then, the lower upper shell 420 of the upper outer wall plate 4 is overlapped with the upper lower shell 410 of the lower outer wall plate 4, and the horizontal upper shell 440 of the right outer wall plate 4 is stacked on the lateral lower shell 430 of the left outer wall plate 4. And the outer wall construction structure 6 is comprised by four-way decision joining.

  As shown in FIGS. 11, 12, and 20, a caulking material 49 is placed on the front surface of the upper lower shell 410 and the horizontal lower shell 430 of the outer wall plate 4. Then, a lower upper solid 420 or a horizontal upper solid 440 of the other outer wall plate 4 overlaps from above the caulking material 49, and by pressing the caulking material 49, a joint gap portion 67 between the adjacent outer wall plates 4, The rainwater from 670 is prevented from entering.

In addition, the fastening bracket 5 has a vertical standing portion 59 (see FIG. 3) that is erected forward in the vertical direction below the support portion 54.
As shown in FIGS. 4 and 5, the fastening bracket 5 and the underlay plate 11 are used for visually recognizing that the engagement plate 12 (see FIG. 3) is rotating from the front of the fastening unit 1. The first visual recognition opening 511 and the second visual recognition opening 111 are provided.

  The first visual opening 511 is formed in the upper leg portion 52 of the fastener 5, and the second visual opening 111 is formed by the second fixing opening 118 in the base plate 11. It is formed above. As shown in FIGS. 1, 7, and 8, the first visual recognition opening 511 and the second visual recognition opening 111 are partially or entirely overlapped with each other, The underlay plate 11 is combined.

  As shown in FIGS. 12, 14, and 15, the fastener 5 is a central horizontal plate that is erected forward from the substrate portion 51 at a substantially central portion that is substantially at the same height as the support portion 54. And a central front plate portion 502 formed in the vertical direction at the front end of the central horizontal plate portion 501. As shown in FIGS. 3, 6, and 12, the tip of the upper plate locking portion 55 and the tip of the lower plate locking portion 56 are connected by a continuous plate 556 formed in the vertical direction. .

As shown in FIG. 15, the continuous plate 556 is arranged in front of the central front plate portion 502. As shown in FIGS. 1, 12, 14, and 15, the left and right ends of the central horizontal plate portion 501 and the central front plate portion 502 have water leakage preventing elastic members 503 on the central horizontal plate portion. It is continuously arranged from the upper surface of 501 to the front surface of the central front plate portion 502.
As the elastic member 503, for example, a closed-cell foam made of EPDM or the like can be used.
Further, as shown in FIG. 16, the base plate 11 is formed by forming a back rib 114 projecting to the back surface in an arc shape, and the outer peripheral surface of the back rib 114 has a metal trunk edge 32 constituting the metal base 3. Is in contact with the opening end 322 of the front opening 321 continuously formed in the length direction of the front surface of the front surface of the front surface of the front surface.

Further, as shown in FIGS. 3 and 5 to 8, the base plate 11 is formed with an upper guide protrusion 112 that protrudes forward above the second viewing opening 111. Further, the underlay plate 11 is provided with a front rib 113 that protrudes forward under the second fixing opening 118 over the entire width of the underlay plate 11.
The upper guide portion 112 guides the upper end portion of the fastener 5 so that the left and right slides of the fastener 5 can be smoothly performed.

  Further, the engagement plate 12 is provided with a fitting claw 121 to be fitted into the screw groove 131 of the fixing screw 13 as shown in FIGS. When the fitting claw 121 is fitted into the screw groove 131, the fixing screw 13 is prevented from loosening and the durability of the outer wall construction structure 6 is improved.

The outer wall construction structure 6 of this example is constructed by fastening the outer wall plate 4 to the metal substrate 3 by the fastening unit 1 as shown in FIG.
That is, the fastener 5 is engaged with the upper side 41 of the lower outer wall plate 4 and the lower side 42 of the upper outer wall plate 4, and the underlay plate 11 is brought into contact with the front surface of the metal base 3. I am letting. Then, the engaging plate 12 is engaged with the metal base 3, and the fixing screw 13 is screwed onto the engaging plate 12 to fix the fastening member 5 and the base plate 11 to the metal base 3. ing. Thereby, the outer wall plate 4 is fastened to the metal base 3.

Further, as shown in FIGS. 6, 15, and 19, the fastening unit 1 engages the metal barrel edge 32 by engaging the engagement plate 12 with a pair of front plates 323 in the metal barrel edge 32. It is fixed.
As shown in FIG. 2, the outer wall plate 4 can be fastened by, for example, a conventional fastening member 61 (see Japanese Patent Application Laid-Open No. 2003-213895) other than the upper / lower / left / right joint portion 64. Further, the lower side portion 42 of the lowermost outer wall plate 4 is supported by, for example, a conventional starter fitting 63.

  When the outer wall plate 4 is fastened to the metal base 3 using the fastening unit 1, the vertical standing portion 59 is provided in the joint gap portion 67 between the two outer wall plates 4 arranged on the lower side. While being inserted, the lower plate locking portion 56 is locked to the upper lower body 410 in the upper side portion 41 of the outer wall plate 4 (see FIGS. 6 and 12). At this time, the vertical erected portion 59 is inserted into the joint gap portion 67, and the vertical erected portion 59 is brought into contact with the right side end surface 431 of the left outer wall plate 4 as shown in FIG.

Next, the fastening unit 1 is fixed to the metal barrel edge 32. At this time, as shown in FIG. 17, the engagement plate 12 is inserted from between the pair of front plates 323 in the metal barrel edge 32. Next, as shown in FIGS. 18 and 19, by rotating the fixing screw 13 in the tightening direction, the engagement plate 12 is rotated and moved forward to be engaged with the back surface of the front plate 323.
When the engagement plate 12 is rotated, the fixing screw 13 is rotated from the first visual recognition opening 511 and the second visual recognition opening 521 formed in the fastener 5 and the base plate 11, respectively. Along with this, it is possible for the builder to visually recognize whether or not the engagement plate 12 is reliably rotated.

Further, the fastening metal fittings 61 other than the starter metal fitting 63 and the upper / lower / left / right joint portion 64 are also fixed to the metal trunk edge 32 by the same engagement plate.
When the upper outer wall plate 4 is arranged, as shown in FIG. 6, the lower side portion 42 of the outer wall plate 4 is supported by the support portion 54 of the fastening bracket 5 in the fastening unit 1 and the upper plate. The locking portion 55 is locked. Specifically, the lower side engaging part 421 provided behind the lower upper part 420 in the lower side part 42 is supported by the support part 54 and is also locked by the upper plate locking part 55.

  At this time, as shown in FIGS. 6, 12, and 15, the elastic member 503 provided on the fastener 5 is brought into close contact with the lower side engaging portion 421 and the lower side surface 422 of the lower upper body 420. Further, the back side surface 422 of the lower upper body 420 of the outer wall plate 4 is brought into contact with the continuous plate 556 of the fastening bracket 5.

Next, the function and effect of this example will be described.
As described above, the fastening unit 1 is disposed on the upper, lower, left and right joints 64 of the four outer wall plates 4 of the four-way joint joining method, and the outer wall plate 4 can be fastened to the metal base 3. Therefore, by using the fastening unit 1, the outer wall construction structure 6 having a four-way agreement can be easily obtained. And the outer wall construction structure 6 of this four-way decision is excellent in the external appearance design property because the joint portion between the outer wall plates 4 is not conspicuous.
Moreover, since it is not necessary to perform the sealing process of a joint part especially by setting it as a four-way agreement structure, construction becomes easy and construction cost can also be reduced significantly.

  The fastening unit 1 is formed by forming the first fixing opening 58 in a shape that is long to the left and right. Therefore, as shown in FIGS. 7 and 8, the fastener 5 can be slid left and right with respect to the base plate 11. That is, even if the base plate 11 in the fastening unit 1 can be fixed only at a predetermined position with respect to the metal base 3 in the left-right direction, the fastening metal 5 is attached to the metal base 3. Thus, it can be fixed at an appropriate position by adjusting the position in the left-right direction.

  Further, the fastening bracket 5 has the vertical standing portion 59. As shown in FIG. 15, the lower left outer wall plate 4 of the fastening unit 1 has its side end face 431 abutted against the vertical standing portion 59. Touching. Thereby, the position of the left-right direction of the said outer wall board 4 can be match | combined correctly, and workability | operativity is improved greatly. Moreover, since the left and right displacement of the outer wall plate 4 after construction can be prevented, the outer wall construction structure 6 can be stabilized over a long period of time.

  Moreover, since the said fastening metal fitting 5 and the said base plate 11 have the said 1st visual recognition opening part 511 and the 2nd visual recognition opening part 111, respectively, as shown in FIG. It can be visually recognized. Therefore, the operation of fixing the fastening unit 1 to the metal base 3 with screws can be easily and reliably performed.

  The fastening bracket 5 includes the central horizontal plate portion 501 and the central front plate portion 502, and the connecting plate 556 is disposed in front of the central front plate portion 501. Elastic members 503 for preventing water leakage are disposed at the left and right ends of the central horizontal plate portion 501 and the central front plate portion 502.

Therefore, as shown in FIG. 20, rainwater 7 that falls along the joint gap 67 between the two outer wall plates 4 on the upper side of the fastening unit 1 can be discharged to the front of the outer wall plate 4.
That is, the fastening member 5 has the elastic member 503 disposed on the upper surfaces of the left and right end portions of the central horizontal plate portion 501. Therefore, the lower side portion 42 (the back side surface 422 and the lower side engaging portion 421 of the lower upper body 420) arranged on the upper side of the fastener 5 is in close contact with the elastic member 503.
As a result, the rainwater 7 that falls to the central horizontal plate portion 501 of the clamp 5 and moves in the left-right direction is blocked by the elastic member 503.

Further, as shown in FIG. 15, the continuous plate 556 is disposed in front of the central front plate portion 502. Then, as shown in FIG. 6, the back side surface 422 of the lower upper body 420 of the upper outer wall plate 4 abuts on the continuous plate 556. Therefore, as shown in FIGS. 14 and 15, the front gap 14 is formed between the rear side surface 422 of the lower upper shell 42 of the outer wall plate 4 and the central front plate portion 502.
As a result, the space formed between the central horizontal plate portion 501, the elastic members 503 at the left and right ends thereof, and the lower side portion 42 of the outer wall plate 4, together with the front gap 14, A water passage 140 leading to the front is formed.

  Therefore, as shown in FIG. 20, the rainwater 7 that falls to the central horizontal plate portion 501 of the fastening bracket 5 and is dammed up by the elastic member 503 passes through the water passage 140 and is actively discharged to the front of the wall surface. The Therefore, the rainwater 7 does not enter the inside of the outer wall construction structure 6.

That is, as shown in FIG. 20, the rainwater 7 that has entered the joining gap portion 67 between the left and right outer wall plates 4 is prevented from moving in the lateral direction by the caulking material 49, and travels downward through the joining gap portion 67. Fall to. Then, the rainwater 7 passes through the front surface of the central front plate portion 502 of the fastener 5, further moves to the joining gap portion 67 that continues downward, and falls.
In addition, the rainwater 7 that has fallen downward along the joint gap 67 may also fall on the upper surface of the central horizontal plate portion 54 of the fastener 5. The rainwater 7 tends to move left and right on the central horizontal plate portion 54.

However, the rainwater 7 is blocked by the elastic members 503 being disposed at the left and right ends of the central horizontal plate portion 54.
Therefore, the rainwater 7 can only travel over the central front plate portion 502 through the water passage 140 formed between the left and right elastic members 503. Thereby, the rainwater 7 is discharged | emitted from the joining clearance part 670 of the upper and lower outer wall board 2 to the wall surface front.

In this way, by using the fastening bracket 5, the rainwater 7 can be reliably prevented from entering the outer wall construction structure 5, and corrosion and deterioration of the outer wall plate 2 and the structural frame 3 can be reliably ensured. Can be prevented.
Further, since the elastic member 503 is made of a closed-cell rubber foam, the elastic member 503 itself does not absorb rainwater and can more reliably prevent the rainwater 7 from entering.

  Further, as shown in FIGS. 5 and 16, the base plate 11 is formed with a back rib 114, and the outer peripheral surface of the back rib 114 is formed at the opening end 322 of the front opening 321 of the metal trunk edge 32. Abut. Thereby, the fastening unit 1 can be fixed at an accurate position with respect to the metal barrel edge 32. Further, since the back rib 114 is formed in an arc shape, the fixing unit 1 can be fixed in a state of being rotatable with respect to the metal barrel edge 32.

  As described above, according to this example, it is possible to provide a fastening unit and an outer wall construction structure capable of obtaining an outer wall construction structure that is easy to construct and excellent in appearance design.

(Example 2)
In this example, as shown in FIGS. 21 and 22, the fastening unit 1 of the present invention is used in an outer wall construction structure 60 for renovation.
In this case, the metal base 3 is fixed to the structural housing 2 via the existing wall 62. The existing wall 62 can be made of various materials such as a mortar wall, RC, ALC, block, brick wall, and the like.
Others are the same as in the first embodiment. Note that the metal runner 31 may not be used.

As in this example, when a new outer wall plate 4 is disposed on the existing wall 62 and reformed, the construction method using the metal base 3 is more effective in terms of workability. That is, by using the metal base 3 having excellent strength as the base material for the new outer wall plate 4, the number of fixing points can be reduced, and the workability can be greatly improved.
The other functions and effects are the same as those of the first embodiment.

The front view of the fastening unit in Example 1. FIG. The front view of the outer wall construction structure in Example 1. FIG. The side view of the fastening unit in Example 1. FIG. The front view of the fastener in Example 1. FIG. FIG. 2 is a front view of an underlay plate in Example 1. The longitudinal cross-sectional view of the outer wall construction structure cut | disconnected in the cut surface which passes along the support part of a fastener in Example 1. FIG. The front view of the fastening unit in the state which made the fastening metal piece slide to the right in Example 1. FIG. The front view of the fastening unit in the state which made the fastening metal piece slide to the left in Example 1. FIG. The rear view of the fastening unit in Example 1. FIG. The front view of the fastening unit which shows that an engagement board can be confirmed from the opening part for 1st visual recognition and the opening part for 2nd visual recognition in Example 1. FIG. The front view of the outer wall construction structure in Example 1. FIG. The perspective view of the outer wall construction structure in Example 1. FIG. The perspective view of the metal runner or metal trunk | rim in Example 1. FIG. The longitudinal cross-sectional view of the outer wall construction structure cut | disconnected in the cut surface which passes along the center horizontal board part of the fastener in Example 1. FIG. FIG. 3 is a top view illustrating a state in which the fastening unit is locked to the upper side portion of the lower outer wall plate in the first embodiment. Explanatory drawing which looked at the state which has arrange | positioned the fastening unit in Example 1 in the metal base from the back of the front board of a metal trunk edge. Explanatory drawing of the fixing method of the fastening metal fitting to the metal trunk edge in Example 1. FIG. Explanatory drawing of the fixing method of a fastening metal fitting following FIG. Explanatory drawing of the fixing method of a fastening metal fitting following FIG. Explanatory drawing of the structure which discharges rain water in the AA arrow equivalent cross section of FIG. The front view of the outer wall construction structure in Example 2. FIG. The longitudinal cross-sectional view of the outer wall construction structure in Example 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fastening unit 11 Underlay plate 111 2nd fixing opening 12 Engagement plate 13 Fixing screw 2 Structure housing 3 Metal base 4 Outer wall board 5 Fastening metal fitting 51 Substrate part 52 Upper leg part 53 Lower leg part 54 Bearing part 55 Upper board Locking portion 56 Lower plate locking portion 57 Recessed portion 58 First fixing opening 6 Exterior wall construction structure

Claims (10)

A fastening unit for fastening a plurality of four-way joint-type outer wall plates to a metal base fixed to a structural frame of a building,
The fastening unit is configured to be arranged at the upper, lower, left, and right joints of the four upper, lower, left, and right outer wall plates, and is connected to the upper side of the lower outer wall plate and the lower side of the upper outer wall plate. A fastening bracket to be joined, an underlay plate that is disposed so as to overlap the back side of the fastening bracket, and that is in contact with the metal base, and that is disposed on the back side of the base plate and engages with the metal base. There are provided an engagement plate for fixing the fastener and the base plate to the metal base, and a fixing screw for screwing the fastener and the base plate to the metal base by screwing to the engagement plate. And
The fastening bracket is formed of a base plate portion that contacts the back side surface of the outer wall plate, an upper leg portion and a lower leg portion that are formed at the upper end and the lower end of the base plate portion, respectively, and contact the lower base plate, and the base plate portion. A support portion erected in the horizontal direction forward, an upper plate engaging portion bent obliquely upward from the support portion, and a lower plate engaging portion bent obliquely downward from the support portion; The substrate portion above the support portion is formed with a recessed portion that is recessed from the substrate portion, and the recessed portion has a first fixing opening through which the fixing screw is inserted,
In addition, a second fixing opening for inserting the fixing screw is formed in the base plate,
The first fixing opening has a long shape on the left and right,
The fastening unit is configured to be fixed to the metal base while sliding to the left and right with respect to the base plate.   The fastening unit according to claim 1, wherein the fastening bracket includes a vertical standing portion that is erected forward in the vertical direction below the support portion.   3. The first visual recognition opening and the second visual recognition opening according to claim 1, wherein the fastening metal fitting and the underlaying plate are configured to visually recognize a state in which the engagement plate is rotating from the front of the fastening unit. A fastening unit characterized by having a part.   The center metal plate according to any one of claims 1 to 3, wherein the fastening bracket includes a central horizontal plate portion erected forward from the substrate portion at a substantially central portion at substantially the same height as the support portion; A central front plate portion formed in the vertical direction at the front end of the horizontal plate portion, and the tip of the upper plate locking portion and the tip of the lower plate locking portion are formed in a vertical direction. The connecting plate is disposed in front of the central front plate portion, and the right and left end portions of the central horizontal plate portion and the central front plate portion are elastic for preventing water leakage. The fastening unit is characterized in that the members are continuously arranged from the upper surface of the central horizontal plate portion to the front surface of the central front plate portion.   5. The underlay plate according to claim 1, wherein the underlay plate is formed with a back surface rib protruding in a back surface in an annular shape or an arc shape, and an outer peripheral surface of the back surface rib is a metal constituting the metal base. A fastening unit characterized by being configured to abut against an opening end of a front opening formed continuously in the length direction on the front surface of the trunk edge. It is an outer wall construction structure in which a plurality of four-way joint-type outer wall plates are fastened to a metal base fixed to the structural frame of the building,
A fastening unit for fastening the outer wall plate to the metal base is disposed at the upper, lower, left, and right joints of the upper, lower, left and right four outer wall plates,
The fastening unit includes the following fastening bracket, an underlay plate disposed so as to overlap the back side of the fastener, an engagement plate disposed on the back side of the underlay plate, and a screw on the engagement plate. And a fixed fixing screw,
The fastening bracket is formed of a base plate portion that contacts the back side surface of the outer wall plate, an upper leg portion and a lower leg portion that are formed at the upper end and the lower end of the base plate portion, respectively, and contact the lower base plate, and the base plate portion. A support portion erected in the horizontal direction forward, an upper plate engaging portion bent obliquely upward from the support portion, and a lower plate engaging portion bent obliquely downward from the support portion; The substrate portion above the support portion is formed with a recessed portion that is recessed from the substrate portion, and the recessed portion has a first fixing opening through which the fixing screw is inserted,
In addition, a second fixing opening for inserting the fixing screw is formed in the base plate,
The first fixing opening has a long shape on the left and right,
The fastening bracket is configured to be able to be fixed to the metal base while sliding left and right with respect to the base plate,
The fastening unit engages the fastening bracket with the upper side portion of the lower outer wall plate and the lower side portion of the upper outer wall plate, causes the base plate to contact the metal base, and the engagement plate. Is engaged with the metal base, and the fixing screw and the base plate are fixed to the metal base by screwing the fixing screw into the engagement plate to fix the outer wall plate to the metal base. Exterior wall construction structure characterized by   The fastening bracket according to claim 6, wherein the fastening bracket has a vertical standing portion that is erected forward in the vertical direction below the support portion, and the lower left or right outer wall plate of the fastening unit is: An outer wall construction structure characterized in that a side end face thereof is brought into contact with the vertical standing part.   8. The first visual recognition opening and the second visual recognition opening according to claim 6 or 7, wherein the fastening metal fitting and the underlaying plate are used for visually confirming that the engagement plate is rotating from the front of the fastening unit. The outer wall construction structure characterized by having each part.   In any one of Claims 6-8, the said fastening metal fitting is the center horizontal board part erected ahead from the said board | substrate part in the substantially center part of the substantially same height position as the said support part, and this center. A central front plate portion formed in the vertical direction at the front end of the horizontal plate portion, and the tip of the upper plate locking portion and the tip of the lower plate locking portion are formed in a vertical direction. The connecting plate is disposed in front of the central front plate portion, and the right and left end portions of the central horizontal plate portion and the central front plate portion are elastic for preventing water leakage. An outer wall construction structure, wherein the members are continuously arranged from the upper surface of the central horizontal plate portion to the front surface of the central front plate portion.   10. The underlay plate according to claim 6, wherein the underlay plate is formed with a back surface rib protruding in a back surface in an annular shape or an arc shape, and an outer peripheral surface of the back surface rib is a metal constituting the metal base. An outer wall construction structure, wherein the outer wall construction structure is in contact with an opening end of a front opening formed continuously in the length direction on the front surface of the trunk edge.

Images