JP4076495B2 - Rafter and rafter joint structure - Google Patents

Description

  The present invention relates to a joining structure of a rafter and a rafter in a panel roof for a terrace, for example.

FIG. 1 is a perspective view showing an example of a panel roof for a terrace.
As shown in FIG. 1, the terrace panel roof includes a rafter 1 fixed to the building frame H and a front girder 3 fixed to the upper end of a column 2 erected at a position separated from the building frame. A plurality of rafters 4 ₁ to 4 ₅ are slanted at intervals, and rafters 4 ₁ and 4 ₂ ; 4 ₂ , 4 ₃ to 4 ₄ and 4 ₅ adjacent to the rafter 1 and the front girder 3 There is a panel in which panels 5 _{1 to} 5 ₄ are placed in between and panel retainers 6 are fixed to the rafters from above each rafter.

In this case, there are various structures for joining the rafter and the rafter, as disclosed in Patent Documents 1, 2, and 3, regarding the shape of the rafter, the configuration of the fixing means, and the fixing direction.
JP 2001-090285 A JP 2001-173101 A Japanese Patent Laid-Open No. 2001-220821

  FIG. 7 is a cross-sectional view showing a joining structure of rafters and rafters on the terrace panel roof described in Patent Document 1, and FIG. 8 is a cross-sectional view taken along line XX of FIG. As shown in FIG. 7, the minimum necessary components for rafters are a mounting portion 11 that comes into contact with the building housing H and is fixed by a coach screw or the like S, and a direction away from the building housing from the lower end portion of the mounting portion. A rafter mounting portion 12 that extends to the end of the rafter 4 and that is formed between the attachment portion 11 and the rafter mounting portion 12 and is mounted on the rafter mounting portion 12. The rafter positioning part 13 for positioning by hitting the end part, and the building frame side end part of the panel 5 that extends parallel to the direction away from the building frame from the upper part of the attachment part 11 and is placed on the panel placing surface of the rafters And projecting edge portions 15 and 16 for mounting gaskets that are in close contact with the upper and lower surfaces of the panel. The upper projecting edge 15 is also used to press the building housing side end of the panel presser 6. When the shape of the rafter is such a simple one, the manufacturing cost can be made the lowest.

Further, as shown in FIG. 8, a fixing portion 41 extending on both sides is provided at the lower end portion of the rafter 4, and this rafter is placed on the rafter placement portion 12 of the rafter, and the rafter placement is placed from below the rafter. In the case of adopting a joining structure that joins the screw 7 penetrating through the part into the rafter fixing part 41, it is sufficient to use only the screw as the fixing tool, so the material cost of the fixing means is low, and only the screw screwing operation is performed. Since it is fixed by, there is an advantage that the fixing work is simple.
In FIG. 8, the rafter 4 r at the right end of the panel roof is a wife rafter, and a fixing portion 41 e is provided on one side of the rafter, and the screw 7 e is penetrated from below the rafter placement portion 12 to be fixed. The rafter 1 and the wife rafter 4r are joined by screwing into the portion 41e.

  However, since a work space is required below the rafter 1 for screwing the screws 7 and 7e, an obstacle such as a curtain box B or a door pocket exists below the rafter 1 as shown in FIG. Has the problem that rafters cannot be joined to the rafters.

In order to solve this problem, a structure for performing the rafter joining operation to the rafter from below the rafter and a structure for performing the rafter joining operation from the side of the rafter are provided. Patent Document 4 discloses an invention in which one of them can be selected depending on whether there is an obstacle below the attachment position.
JP 2003-227176 A

  In the invention described in Patent Document 4, firstly, an oblique bracket mounting portion (25) connected to the rafter positioning portion between the mounting wall of the rafter (2) and the rafter placement portion (21) is provided, Secondly, a bracket (5) having a rafter hanging contact portion (53), a rafter insertion portion (51), and screw receiving portions (52) on both sides is formed, and thirdly, the bottom wall of the rafter (3) In addition, screw through holes are provided at the rafter-hanging side end portions of the side walls.

  If there are no obstacles, screws (4) from below the rafter mounting portion of the rafter are inserted into the screw through holes of the rafter (3) mounted on the rafter mounting portion (21) of the rafter (2). ) Are joined by screwing. On the other hand, when there is an obstacle in the lower part, first, attach the bracket (5) to the bracket mounting part (25) of the rafter (2) with the screw (6) screwed from the opposite side of the building frame with respect to the rafter. The bracket (5) is inserted into the hollow part at the end of the rafter (3) building side, and the screw (7) that penetrates the rafter from the screw through hole on the side of the rafter is inserted into the screw on the bracket (5). It joins by screwing in a receiving part (52).

As described above, in Patent Document 4, the rafter hanger is used to enable screwing work from a position other than the bottom of the rafter, that is, screwing work from the opposite side of the rafter hanging from the building housing and screwing work from the side of the rafter. It is necessary to newly install a diagonal bracket mounting part (25), and therefore, it is necessary to manufacture a new die for manufacturing the rafter, so that the increase in the manufacturing cost of the rafter is inevitable. .
In addition, the bracket (5) has a length from the rafter bracket mounting portion (25) to the end of the rafter hollow inserted into the end of the building frame, and the rafter insertion portion (51) There is a problem that the price of the bracket becomes high because it is necessary to provide a width that can be brought into contact with the inner wall surfaces on both sides.

  The present invention has been made in view of the above points, and the problem thereof is as simple as possible when the obstacle is not present below the rafter and is present in any case. The rafter hanger can be used continuously, and the rafter mounting bracket used when there are obstacles below the rafter hanger can be made as cheap as possible. The object is to provide a rafter-rafter connection structure that can be minimized.

  In order to solve the above-mentioned problems, the invention of claim 1 is a joining structure in which a rafter-building-side end is placed on a rafter-mounting portion of a rafter attached to a building cabinet, and the rafter and rafter are joined. (A) The rafter is provided with a first screw through hole in the rafter placement portion at a slightly narrower interval than the width of the rafter placed on the rafter placement portion, and the width of the rafter (B) The rafters are provided with screw holes at intervals equal to the rafter-hanging first screw through holes at the bottom of the rafter building side. A screw hole is provided on the side surface of the rafter building side, and (c1) when there is no obstacle below the rafter, a screw penetrating the first screw through hole of the rafter is provided. The end of the rafter building frame on the rafter rack (C2) When there is an obstacle below the rafter, the screw penetrating the second screw through hole of the rafter is mounted on the rafter. Screw the rafter mounting bracket on one end of the rafter mounting bracket and fix the rafter mounting bracket to the rafter hook. It is characterized in that the rafters and rafters are joined by screwing into the screw holes on the side of the rafters on the side of the building frame placed on the stand.

  The invention of claim 2 is a joining structure in which a rafter building side end is placed on a rafter placing portion of a rafter attached to a building frame, and the rafter and rafter are joined together. The rafter placement portion is provided with the first screw through holes with a slightly narrower spacing than the width of the rafter placed on the rafter placement portion, and with a slightly wider spacing than the width of the rafter. A second screw through hole is provided, and (b ′) the rafter is provided with a screw hole at the bottom of the rafter's building-side end at the same interval as the rafter hanging first screw through hole. (C1) When there is no obstacle below the rafter, a screw penetrating through the first screw through hole of the rafter is placed on the rafter placement portion of the rafter. A rafter screwed into a screw hole at the end of the rafter building (C2) When there is an obstacle below the rafter, a rafter in which a screw penetrating the second screw through hole of the rafter is placed on the rafter placement portion of the rafter Screw in one end of the mounting bracket to fix the rafter mounting bracket to the rafter, and install a screw that penetrates the other end of the rafter mounting bracket on the rafter mounting portion between the rafter mounting brackets. It is characterized in that a rafter and a rafter are joined by screwing into a nut inserted at the end of the dovetail groove on the side portion of the rafter placed.

  According to the first aspect of the present invention, when there are no obstacles below the rafter, the rafter and the rafter can be easily joined by screwing the screw from below the rafter. . In addition, when there is an obstacle in the rafter screw hole through the first screw through hole of the rafter mount of the rafter, the rafter mounting bracket is attached to the rafter mount of the rafter. Mounted in advance with screws penetrating through the two screw through-holes, and placed the rafter building housing side end on the rafter mounting rafters between the rafter mounting brackets, and the rafter building brackets from the rafter mounting brackets By screwing the screw into the screw hole on the side surface of the side end, the rafter and the rafter can be joined, and the joining work is possible even if an obstacle exists. In addition, since the first screw through hole and the second screw through hole are both provided close to the rafter placement portion, the processing operation is not particularly complicated. In addition, the rafter mounting bracket is fixed to the rafter placement part and the rafter side of the rafter, which are close to the rafter, so that the material consumption is minimal, so there is no cost increase. It is possible to deal with the case where there is an obstacle below the hanger.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained, and rafters having grooves on the side portions are widely used. The rafter and the rafter can be easily joined regardless of whether there is an obstacle below or if there is an obstacle.

Next, the best mode for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an installation state of a terrace roof when an obstacle is present below a rafter, FIG. 2 is a longitudinal sectional view of a first embodiment of the present invention corresponding to a circle A portion of FIG. FIG. 3 is a cross-sectional view taken along line YY in FIG. 2, and FIG. 4 is a process diagram for explaining a joining process when an obstacle is present below the rafter. FIG. 5 is a perspective view showing an example of another coupling structure of the rafter attachment bracket to the rafter in the second embodiment of the present invention, and FIG. 6 is a perspective view showing an example of the shape of the rafter attachment bracket used in each embodiment.

In the present invention, the second and third rafters 4 ₂ and 4 ₃ and the left rafter 4 _{1 from the} left in FIG. ₁ have the same joining structure as the joining structure described with reference to FIGS. Used to be joined to the rafter 1. On the other hand, the fourth rafter 4 ₄ and the right rafter 4 ₅ from the left in FIG. 1 are joined to the rafter 1 using a joining structure described below based on FIGS. 2 and 3. .

  As shown in FIGS. 8 and 4A, the rafter 1 is provided with screw through holes 12a and 12a in the rafter placement portion 12 with a slightly narrower interval than the width of the bottom surface of the rafter 4, Screw through holes 12b and 12b are provided at intervals slightly wider than the width of the bottom surface of the rafter 4. The space between the inner narrow screw through holes 12a, 12a is equal to the space between the screw holes provided in the bottom wall of the rafter 4 at the building frame side end. The diameters of the outer wide-spaced screw through holes 12b, 12b and the inner narrow-spaced screw through-holes 12a, 12a are preferably equal to allow the use of a common screw.

  One end portion of the rafter mounting bracket 8 can be fixed to the rafter 1 by screws using the outer screw through holes 12a and 12b in the rafter placement portion 12 of the rafter 1. The rafter mounting bracket 8 is made of steel having sufficient strength, and as shown in FIGS. 2 to 6 (a), a rafter hanging contact portion 81, a rafter contact portion 82, and an intermediate connection portion connecting them. 83. The rafter-hanging contact portion 81 and the rafter-contacting portion 82 are provided with screw holes 81a and 82a penetrating in the vertical direction and the horizontal direction, respectively. As shown in FIG. 4, the left and right rafter mounting brackets 8 are made symmetrically. A screw of the same size can be passed through or screwed into any of the screw through holes 12a and 12b and the screw holes 81a and 82a.

When the rafters 4 ₂ and 4 ₃ are joined to the rafter 1 shown in FIG. 1 at a position where there is no obstacle below, as shown in FIGS. The end of the rafter 4 on the building frame side is placed on the placing portion 12, and a screw hole (not shown) provided on the bottom wall (fixed portion) 41 of the rafter is placed inside the rafter placing portion of the rafter. It is possible to match with the screw through holes 12a and 12a, pass through the screw 7 from below, and screw in to join.
In contrast, when bonding the rafters 4 ₄ at a position where an obstacle exists downward rafter hook 1 of Figure 1, before attaching the rafters hanging 1 in building structures, the rafters hanging rafters placing the portion The rafter attachment bracket 8 is attached to the rafter 1 using the outer screw through holes 12b and 12b. That is, as shown in FIGS. 4A and 4B, the rafter-hanging contact portion 81 of the rafter mounting bracket 8 is brought into contact with the rafter placement portion 12 so that the screw hole 81a is aligned with the screw through hole 12b. The screw 7 is screwed into the screw hole 81 from below the mounting portion 12 through the screw through hole 12b and attached. In addition, a screw hole 42 is formed on the side surface of the rafter 4 on the side of the building frame side so as to match the screw hole 82a of the rafter abutting portion 82. Subsequently, the rafter 1 is attached to the building frame with a coach screw S as shown in FIG. 6C, and the rafter 4 end of the building frame is fitted between the mounting brackets 8 to place the rafter. The rafter abutment portion 82 of the rafter attachment bracket 8 is abutted against the side surface of the rafter and the screw 7 'is screwed into the screw hole 42 on the side surface of the rafter. Then, the rafter 1 and the rafter 4 are joined via the rafter mounting bracket 8.

The right wife rafters 4 ₅ of FIG. 1, as shown on the right side of FIG. 3, the bottom wall that is projected to the left wife rafters 4 ₅ (fixing part) 41e on the left side of FIG. 4 rafters mounting bracket 8 attach the rafters mounting bracket 8 of the same shape in the same manner, and rafters seat 1 and his wife rafters 4 ₅ by its rafters mounting bracket 8 is joined to.

As described above, the same screw 7 that is screwed into the inner screw through-holes 12a and 12a by using the outer screw through-holes 12b and 12b of the rafter placement portion is attached to the rafter abutting portion 82 of the rafter mounting bracket. Since the rafter and the rafter can be joined by screwing into the screw hole 82a and the screw hole 42 on the side surface of the rafter 4 from the side thereof, even if an obstacle (B) is present below the rafter, it depends on this. Instead, it can be joined to the rafters 4 ₄ and 4 ₅ .

  The rafter mounting bracket 8 shown in FIG. 2, FIG. 4 and FIG. 6 (a) has a shape that fits when the rafter has fixing portions 41e projecting on both outer sides of the bottom wall. It can be arbitrarily changed according to the cross-sectional shape of the part. If the screw through hole 83a is formed and placed in the portion of the intermediate connection portion 83 that is placed on the fixing portion 41e as in the rafter mounting bracket 8A shown in FIG. 6B, the fixing portion is indicated by 41e in FIG. In the case where it is formed in a dovetail groove shape, the bolt 7 'is penetrated from the screw through hole 83a and screwed into a nut (not shown) inserted in the dovetail groove of the fixing portion, so that the rafter and rafter hook are It can also be joined.

Furthermore, when the rafter used has a dovetail-shaped fixing portion 41e ′ as shown in FIG. 5 from the beginning, the rafter mounting bracket is (b) as shown by 8B in FIG. ) In which the rafter abutting portion 82 of the rafter mounting bracket 8A is removed.
Each of the rafter mounting brackets has a simple and compact shape having a part fixed to the rafter-hanging rafter placement part with a screw and a part fixed to the side wall or the fixing part of the rafter with a screw or a bolt and nut. Inexpensive. It is fixed to the rafters by screws that are screwed in from below the rafter placement part, and to rafters by screws that are screwed into the rafters that are placed on the rafter placement part of the rafters. Therefore, even if there is an obstacle below, the joining operation is not hindered.

  According to an embodiment of the present invention, a pair of screw penetrations having an interval smaller than the width of the rafter corresponding to the case where there is no obstacle below the predetermined rafter joint position of the rafter mounting portion of the rafter When a hole is provided and there is an obstacle below the roof installation site, at the rafter joint position corresponding to the obstacle, the outside of the pair of screw through holes on the inside having a space narrower than the width of the rafter A first embodiment in which an outer pair of screw through holes having an interval wider than the width of the rafter is additionally provided, and when there is an obstacle underneath, all rafter joining is performed regardless of the position of the obstacle. There may be a second mode in which a pair of inner screw through holes having a distance narrower than the width of the rafters and a pair of outer screw through holes having an interval wider than the width of the rafters are provided. In these cases, there is an advantage that processing for rafters is unnecessary at the roof installation site. And the inner and outer screw through-holes can be formed easily by drilling work in the same direction by simply moving the rafters by a predetermined distance in the longitudinal direction using the same drill, making processing easy and inexpensive It can be carried out. However, in addition to the conventional rafters, the embodiment of the present invention has a pair of outside screwed holes on the inside at each rafter joining position corresponding to an obstacle present on the roof installation site. A third aspect of forming a screw through hole can also be implemented.

  The present invention generally has a structure in which a support member that extends in a direction away from a building frame and supports a plate (panel) is joined to a horizontal member fixed to the building frame, for example, a patio roof besides a panel roof for a terrace It can also be applied to eaves. Moreover, the deck material supporting joist of the balcony deck has a similar structure with a groove on the side of the hollow portion, so that the invention of claim 2 can also be applied to the joining of joists and joists.

The perspective view which shows an example of the panel roof for terraces. The longitudinal cross-sectional view corresponding to 1st Example of this invention in the circle A part of FIG. Sectional drawing along the ZZ line of FIG. Process drawing explaining a joining process in case an obstruction exists under a rafter. The perspective view which shows the example of the other coupling structure with respect to the rafter of the rafter attachment metal fittings in 2nd Example of this invention. The perspective view which shows the example of a change of the shape of a rafter attachment metal fitting. Sectional drawing which shows an example of a prior art. Sectional drawing along the XX line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rafter hook 41, 42 Rafter 12 Rafter placement part 12a, 12a First screw through hole 12b, 12b Second screw through hole 7 Screw 8 Rafter mounting bracket

Claims (2)

In the junction structure where the rafter building frame side end is placed on the rafter mounting part of the rafter attached to the building frame, and the rafter and rafter are joined,
The rafter is provided with a first screw through hole in the rafter placing portion at a slightly narrower interval than the width of the rafter placed on the rafter placing portion, and slightly less than the width of the rafter. Provided with a second screw through hole at a wide interval,
The rafter is provided with a screw hole at the bottom of the rafter's building-body-side end with equal spacing to the rafter-hanging first screw through-hole, and the rafter has a screw hole on the side of the rafter's building-side end. Provided,
When there is no obstacle under the rafter, the screw hole at the end of the rafter building that is installed in the rafter placement section of the rafter is inserted into the first screw through hole of the rafter. Screwed into and joined rafters and rafters,
If there is an obstacle under the rafter, the screw that penetrates the second rafter through hole of the rafter is screwed into one end of the rafter mounting bracket placed on the rafter placement portion of the rafter, and the rafter The mounting bracket is fixed to the rafter, and a screw penetrating the other end of the rafter mounting bracket is mounted on the rafter mounting portion of the rafter between the rafter mounting brackets. A rafter and rafter joining structure, wherein the rafter and rafter are joined by screwing into a screw hole on the side surface of the end. In the junction structure where the rafter building frame side end is placed on the rafter mounting part of the rafter attached to the building frame, and the rafter and rafter are joined,
The rafter is provided with a first screw through hole in the rafter placing portion at a slightly narrower interval than the width of the rafter placed on the rafter placing portion, and slightly less than the width of the rafter. Provided with a second screw through hole at a wide interval,
The rafters are provided with screw holes at the same distance as the rafter-hanging first screw through-holes at the bottom of the rafter's building housing side end, and the rafters are provided with a dovetail groove that opens on the top surface. ,
When there is no obstacle under the rafter, the screw hole at the end of the rafter building that is installed in the rafter placement section of the rafter is inserted into the first screw through hole of the rafter. Screwed into and joined rafters and rafters,
If there is an obstacle under the rafter, the screw that penetrates the second rafter through hole of the rafter is screwed into one end of the rafter mounting bracket placed on the rafter placement portion of the rafter, and the rafter A mounting groove is fixed to the rafter, and a screw threaded through the other end of the rafter mounting bracket is placed on a rafter mounting portion of the rafter between the rafter mounting brackets. A rafter and rafter joining structure characterized in that the rafter and rafter are joined by screwing into a nut inserted at the end of the building's housing.

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