JP3946703B2 - Fastening bracket - Google Patents

Description

  The present invention relates to a fastener used when, for example, a ceramic-type exterior material or an outer wall plate (hereinafter referred to as “siding” in the present invention) is fastened to a building frame.

  As a construction of the outer wall of a building, a siding having a rectangular shape and having a real part at an upper end edge and a lower end edge is fastened to the housing side using a fastening bracket. An example of the fastener is shown in Patent Document 1 (Japanese Patent Laid-Open No. 09-096080). As shown in FIG. 5, the mounting bracket A includes a base plate portion 1 that is a fixing portion to the housing side, and a siding upper and lower end support portion 2 formed by bending a portion of the base plate portion 1 forward. And a through hole 3 for a fastening nail is formed on the upper end side of the substrate portion 1.

  The upper and lower end support portions 2 of the siding include an upper siding locking portion 4 that locks the lower edge 11 of the upper siding 10a, and a lower siding locking portion 5 that locks the upper edge 12 of the lower siding 10b. Yes. A vertical ridge (reinforcing rib) 6 is formed on a portion of the substrate 1 that supports the back surface of the lower siding 10 b, and the ridge 6 extends to the region of the upper siding locking portion 4. .

  When this fastening bracket A is struck to the base material by the nail 7, the head 8 of the nail 7 protrudes to the surface of the substrate 1. However, the back surfaces of the upper and lower sidings 10a and 10b to be fastened are both supported by the vertical ridges 6 and are separated from the substrate 1 by the height of the ridges 6, so that the head 8 of the nail 7 is attached to the siding 10a. , 10b is not hindered, and the mounting levels of the upper and lower sidings 10a, 10b constructed via the fastener A are automatically set to be flush with each other.

  5 has a sufficient ventilation layer between the base material and the back surface of the siding because there is no sufficient gap between the back surface of the upper and lower sidings 10a and 10b to be fastened. May not occur and condensation may occur. For this purpose, as shown in Patent Document 2 (Japanese Patent Laid-Open No. 09-137579), leg portions in the front-rear direction are formed between the substrate and the upper and lower end support portions of the siding, and a ventilation layer is formed by the leg portions. Fasteners that can be secured are also used.

  The fastening metal fitting of the form shown in Patent Document 2 is complicated in processing and requires a material corresponding to the leg portion, which inevitably increases the cost. In addition, there is a case where it is desired to increase the effective volume in the room by preventing the construction outer wall surface from jumping forward as much as possible, but such a demand cannot be answered.

The fastener of the form shown in Patent Document 1 can be made with a relatively small amount of material, and the cost is reduced. Also, the effective volume in the room can be increased. The air permeability on the back side of the siding is sacrificed accordingly, but when the siding is fastened by fixing the mounting bracket to the trunk edge and the base surface has a trunk edge, a certain degree of ventilation is provided by the trunk edge. Will be secured, so there will be no trouble. For this reason, the fastener shown in FIG. 5, that is, the fastener that does not include a portion for securing a ventilation layer by itself, can be used under certain conditions.
Japanese Unexamined Patent Publication No. 09-096080 JP 09-137579 A

  The fastener shown in FIG. 5 can be constructed entirely with a small amount of material, but the substrate is formed of only a single steel plate, so the substrate strength tends to be insufficient. When wind pressure is applied, a large force is applied to the vicinity of the substrate, particularly in the vicinity of the region where the through hole for nailing is formed, and this portion may be deformed.

  The present invention has been made in view of the circumstances as described above, and by increasing the strength of the substrate portion by a simple bending process, the upper and lower siding fastening levels are automatically flushed. An object of the present invention is to provide a fastening metal fitting configured to smoothly perform a siding fastening operation.

The fastening bracket according to the present invention is a fastening bracket provided with a base plate portion that is a fixing portion to the housing side, and siding upper and lower end support portions formed by bending a part of the base plate portion forward. The upper end side of the substrate portion is a superposed region in which the substrate is folded back to the front side, and the region is made to function as a back surface supporting portion of the upper siding, and there is also used for a fastener. A through hole is formed, and the upper and lower end support parts of the siding have an upper siding locking part and a lower siding locking part, and the upper siding locking part bends the lower end part of the board part forward. The horizontal portion formed in the left-right direction and two rising portions formed by bending the left and right side edges of the horizontal portion obliquely upward from the tip are formed. And a falling part formed by bending the front end of the horizontal part obliquely downward at a portion between the rising parts, and a tongue piece notched down from the upper part of the horizontal part of the substrate part. Ribs for reinforcement extending vertically are formed on both sides of the upper portion of the horizontal portion of the notched substrate portion, and further constitutes a back support portion for the lower siding in the lower siding locking portion The tongue piece is positioned in front of the surface of the substrate portion so that at least a part of the surface side of the tongue is substantially flush with the surface of the overlapping region and the surface of the rib. And

  In the above-mentioned fasteners, the vicinity of the upper end region of the substrate part where the through holes for fasteners such as nails and screws are formed has a superposed structure in which steel plates are overlapped, and strong substrate strength have. Therefore, there is no possibility of deformation even when a large wind pressure is applied from the siding back side in the construction state. The operation of duplicating is simply a folding process in which the substrate is folded back to the front side and overlapped.

  Further, the back side support portion of the lower siding in the lower siding locking portion is positioned forward of the surface of the substrate portion so as to be substantially flush with the surface of the overlapping region of the substrate portion, The fastened upper siding surface and the lower siding surface are automatically flush with each other. Moreover, the process of positioning the back support part of the lower siding in front of the front surface of the substrate part is also a simple bending process.

  When fixing the fastening bracket of the present invention to a base material such as a torso, usually a fastener (nail or screw) having a head having a predetermined thickness is used. The part pops out and the siding fastening level cannot be made the same.

  In order to cope with this, in a preferred embodiment of the fastener according to the present invention, the through hole formed in the overlapping portion region is a first penetration formed in the steel plate on the surface side having a size that allows the head of the fastener to enter. The first through hole and the center line are the same, but the second through hole is formed in the steel plate on the back surface side whose diameter is smaller than that of the first through hole.

  By adopting this form, it becomes possible to fix the fastener to the base material in a state where the entire head of the fastener is embedded in the first through hole formed in the steel plate on the surface side, and the upper siding The back surface and the back surface of the lower siding can be securely fastened together. The first through hole may be a hole with a closed periphery or a hole with a part of the periphery open. Moreover, you may further form the hole for screwing in the position near the support part of a board | substrate part.

  In the above aspect, preferably, the second through hole is subjected to drawing processing toward the surface side at the periphery thereof. As a result, a part protruding forward is formed on the peripheral edge of the second through-hole, so that the part is pushed down against the pressing force from the head of the fastener when the fastener is fixed. Since it is deformed, the fixing of the fastener to the base material is further stabilized.

  According to the present invention, it is a lightweight and low-cost product, and it is possible to obtain a fastener that can increase the strength of a substrate portion by simple bending and can smoothly perform a siding fastening operation at a construction site. It is done.

  Hereinafter, an embodiment of a fastener according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a fastener according to the present invention, and FIG. 2 is a sectional view taken along the line II-II. FIG. 3 is a schematic cross-sectional view showing an outer wall construction structure using the fastener according to the present invention. FIG. 4 shows another embodiment of the fastener according to the present invention, FIG. 4a is a perspective view, and FIG. 4b is a cross-sectional view taken along the line bb of FIG. 4a.

  The fastener 20 is formed by punching and bending, pressing, and drawing from a single steel plate such as a stainless steel plate or an alloy-plated steel plate. The fastening bracket 20 includes a flat plate-like substrate portion 21 that is a fixed portion to the housing side, and upper and lower end support portions 30 of siding formed by bending the lower end side of the substrate portion 21 forward. In the figure, reference numeral 21a denotes a rib press-formed on the substrate portion 21 for the purpose of reinforcement.

  As shown in FIG. 2a, the upper end side of the substrate portion 21 is a superimposed region 23 in which a portion 22 of the substrate portion 21 is folded forward and overlapped, and the superimposed region 23 is the upper siding. Functions as a back support. In addition, an appropriate number (three in the figure) of through holes 24 are formed in the overlapping region 23.

  In the illustrated example, the through hole 24 includes a first through hole 24a formed in the steel plate 23a superimposed on the front surface side and a second steel plate 23b formed on the back surface side of the two superposed steel plates. It is comprised by the through-hole 24b. As shown in FIG. 3, the first through hole 24a has an inner diameter that allows the head 8 of the nail 7 as a fastener to enter, and the second through hole 24b has the same center line as the first through hole 24a. However, the hole has a smaller diameter. Note that the second through hole 24b may be a simple flat hole as shown in FIG. 2a, but as shown in FIG. You may make it have the part 24b1 which protruded (surface side).

  The siding upper and lower end support portion 30 includes an upper siding locking portion 31 and a lower siding locking portion 32. The upper siding locking portion 31 is formed by bending the lower end portion of the substrate portion 21 forward 90 ° and extending in the left-right direction, and bending the left and right side edges of the horizontal portion 25 obliquely upward from the tip. The two rising portions 26 and 26 are formed. The lower siding locking portion 32 is formed by bending the tip of the horizontal portion 25 obliquely downward at the portion between the horizontal portion 25 and the rising portions 26, 26, and the substrate portion 21. The upper portion of the horizontal portion 25 is cut out and formed with a tongue piece 28 hanging downward.

  The tongue piece 28 functions as a back surface supporting portion of the lower siding, and at least a part of the region 29 on the surface side thereof is substantially the same as the surface of the overlapping region 23 (the surface of the steel plate 23a superimposed on the surface side). Bending is performed so as to be flush with each other (that is, the portion is positioned in front of the surface of the substrate portion 21).

  FIG. 3 shows a state in which the siding 10 is fastened to the base material using the fastening hardware 20. In this example, the fastening bracket 20 is fixed by the nail 7 using the through hole 24 formed in the overlapping region 23 of the substrate portion 21 on the trunk edge 40 as a base material. As described above, the overlapping region 23 of the substrate portion 21 is composed of two steel plates and has a strong substrate strength. Therefore, in the construction state, there is no risk of deformation even when a large wind pressure is applied from the back side of the siding.

  Further, since the head 8 of the nail 7 is accommodated in the first through hole 24 a after the driving, the head 8 does not jump out to the surface of the overlapping region 23. As shown in FIG. 2b, when the peripheral edge of the second through-hole 24b is a portion 24b1 protruding somewhat forward (surface side), the portion 24b1 protruding at the time of fixing is a pressing force from the head 8 of the nail 7. Therefore, it is possible to further stabilize the fixing of the fastener 20 to the trunk edge 40.

  As shown in the drawing, the upper and lower sidings 10a and 10b are configured such that the lower solid 12 of the lower siding 10b is locked to the lower siding locking portion 32 of the fastener 20 and the upper siding 10a positioned above is fixed. The nut 11 is fastened in a state of being locked to the upper siding locking portion 31 of the fastening bracket 20. At that time, the back surface of the upper siding 10 a comes into contact with the steel plate 23 a on the front surface side of the overlapping region 23, and the back surface of the lower siding 10 b is on the front surface side of the tongue piece 28 constituting the lower siding locking portion 32. It comes into contact. As described above, the surface region 29 that is substantially flush with the surface of the overlapping region 23 (the surface of the steel plate 23a on the surface side) is formed on the surface of the tongue piece 28, and the surface region 29 of the siding 10b is formed in the surface region 29. Since the back surface is supported, the front surfaces of the upper and lower sidings 10a and 10b after fastening are automatically in a flush state.

  4A, the first through hole 24a is not a closed hole at the periphery, but a hole at which a part 24c of the periphery is opened. The structure is different from that of the fastener 20 described with reference to FIGS. 1 to 3 in that it further includes a portion 35 and the periphery of the second through hole 24b is a flat surface. The configuration of the other parts is the same and is given the same reference numerals. By forming the through hole 24 for nailing and the through hole 35 for screwing in this manner, the degree of freedom of fastening at the construction site is increased. The reason why the first through hole 24a has a part 24c opened is to make it easier to form a through hole 35 for screwing, and may be a closed hole. Furthermore, the fastening force is ensured by forming the through holes 35 for screwing at positions close to the upper and lower end support portions 30 of the siding.

  As described above, the fastening metal fitting according to the present invention can be basically manufactured by bending a steel plate and can give a large strength to the substrate portion while being a lightweight and low-cost product. Fixing to the edge can be performed very smoothly. Moreover, since the upper and lower sidings after fastening are in a flush state, a construction result with high designability can be obtained.

The perspective view which shows the fastening metal fitting by this invention. 2A is a cross-sectional view taken along line II-II in FIG. 1, and FIG. 2B is a cross-sectional view showing a modification. The schematic sectional drawing which shows the outer wall construction structure using the fastening metal fitting shown in FIG. FIG. 4A is a perspective view, and FIG. 4B is a cross-sectional view taken along the line bb in FIG. The schematic sectional drawing which shows the outer wall construction structure using the conventional fastener.

Explanation of symbols

  10a, 10b ... Up and down siding, 11 ... Upper solid, 12 ... Lower solid, 20 ... Fastener, 21 ... Substrate part, 23 ... Overlapping region, 23a ... Steel plate superimposed on the front side, 23b ... Steel plate on the back side, 24 ... Through hole, 24a ... First through hole, 24b ... Second through hole, 25 ... Horizontal part, 26 ... Rising part, 27 ... Falling part, 28 ... Tongue piece functioning as back support part of lower siding , 30 ... Upper and lower end support parts of siding, 31 ... Upper siding locking part, 32 ... Lower siding locking part, 40 ... trunk edge, 7 ... nail, 8 ... head

Claims (3)

In the fastening bracket provided with a base plate portion that is a fixing portion to the housing side, and siding upper and lower end support portions formed by bending a part of the base plate portion forward,
The upper end side of the substrate portion is a superposed region in which the substrate is folded back to the front side, and the region is made to function as a rear surface support portion of the upper siding, and there is also used for a fastener. A through hole is formed,
The upper and lower end support portions of the siding have an upper siding engagement portion and a lower siding engagement portion, and the upper siding engagement portion extends in the left-right direction formed by bending the lower end portion of the substrate portion forward. The horizontal part and two rising parts formed by bending the horizontal side edge side of the horizontal part diagonally upward from the tip, the lower siding locking part is between the horizontal part and the rising part In this part, it is formed by a falling part formed by bending the tip of the horizontal part obliquely downward, and a tongue piece that hangs downward by cutting out the upper part of the horizontal part of the substrate part,
Ribs for reinforcement extending vertically are formed on both sides of the upper portion of the horizontal portion of the notched substrate portion,
Further, the tongue piece constituting the lower siding back surface support portion of the lower siding locking portion has a base plate portion so that at least a part of the surface side thereof is substantially flush with the surface of the overlapping region and the rib. Fastening metal fitting characterized by being located in front of the surface of.   The through-hole formed in the overlapping portion region has the same center line as the first through-hole and the first through-hole formed in the steel plate on the surface side that is large enough to allow the head of the fastener to enter. The fastening bracket according to claim 1, comprising: a second through hole formed in a steel plate on the back surface side having a diameter smaller than that of the first through hole.   The fastening metal fitting according to claim 2, wherein the second through-hole is subjected to drawing processing toward the surface side at a peripheral edge thereof.

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