JP6431636B2 - Front frame and rafter mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for a front frame and a rafter constituting a roof portion such as an open terrace.

  Since it has the great advantage of being able to increase the functionality and convenience of buildings such as houses and stores, it has the great advantage of being a garden room type building external structure such as a solarium, terrace, balcony, etc. There are an increasing number of cases where side-through type building exterior structures such as ports, bicycle storage areas, open terraces, storerooms, and passages are constructed (installed and expanded) outside the main body of a building such as a house.

  And this kind of building exterior structure A has a predetermined space | interval with the direction along the outer wall T1 with a predetermined space | interval with the outer wall T1 of the building main bodies T, such as a house, for example, as shown in FIG. A plurality of support pillars 1 are erected with a gap between them and connected to the upper end of the support pillar 1 so that a girder 2 is installed, and the roof part 3 is supported by the support pillars 1 and the girder 2.

  The roof portion 3 has a rafter 5 installed horizontally on the outer wall T1 of the building body T, a rear end connected to the rafter 5 and supported by the girder 2 and extending in the front-rear direction S1. A plurality of rafters 5 arranged in parallel in the lateral direction S2 along T1 and a roof panel 6 that is supported by the rafters 5 and forms a roof surface (for example, patent document) 1, see Patent Document 2).

  Further, the roof 3 is connected to the ends of the plurality of rafters 5 and extends in the lateral direction S2. For example, the end of the roof 3 is formed to ensure design, or as a rain gutter A functioning front frame 7 is provided.

  And when constructing such a building exterior structure A, for example, after installing the rafter 4 on the outer wall T1 of the building main body T, erecting the column 1 and erection the girder 2, then rafters on both sides (Tsumari rafters 5a, 5b) 5 are installed, supported by these rafters 5a, 5b, and a front frame 7 is attached. Will be installed.

  On the other hand, when the front frame 7 is installed, the long front frame 7 is routed and connected to the wife rafters 5a and 5b, and it is difficult for one operator to stabilize the front frame 7. 7 requires a lot of work and labor. For this reason, it is necessary to install the front frame 7 by two workers.

  On the other hand, in Patent Document 1, as shown in FIG. The method of installing is disclosed.

  In Patent Document 1, as shown in FIG. 11A, screws 10 are fixed to the tips of a plurality of rafters 5 in advance, and fixing fixtures 10 are attached. The front frame 7 is temporarily installed by being hooked and supported by the portion 8. Then, as shown in FIGS. 11B and 11C, the front frame 7 is pushed into the rafter 5 side to be locked from the temporary installation locking portion 8 of the fixing bracket 10 to the main installation locking portion 9. The front frame 7 is fixed to the rafter 5 and the fixing bracket 10 with screws 11 and 12 respectively.

  In this way, the front frame 7 can be easily installed by one worker by installing the front frame 7 in two steps (three steps when screwing work is combined) of temporary installation and main installation. It becomes possible to do. Thereby, in patent document 1, the installation work of the front frame 7 and the construction of the building external structure A can be performed efficiently.

JP 2008-208671 A JP-A-11-293866

However, in Patent Document 1, a fixing bracket 10 having a temporary installation locking portion 8 and a main installation locking portion 9 arranged in front and rear is separately prepared, and the fixing bracket 10 is attached to the tip of each rafter 5 with a screw 13. Work to stop and install is necessary. Further, a screw hole for fixing the fixing bracket 10 may be drilled in each rafter 5 by on-site construction.
For this reason, Patent Document 1 has room for improvement in that the number of parts of the fixing bracket 10 and the screws 11, 12, and 13 is increased, and the number of construction processes by on-site processing and on-site parts attachment is increased accordingly. It was left.

  In view of the above circumstances, an object of the present invention is to provide a mounting structure for a front frame and a rafter that can easily install a front frame at the tip of the rafter while suppressing the number of components.

  In order to achieve the above object, the present invention provides the following means.

The front frame and rafter attachment structure of the present invention is a structure for installing a front frame at the tips of a plurality of rafters arranged side by side at a predetermined interval, wherein the front frame functions as a horizontal gutter. A frame body part, a projecting part projecting rearward from the front frame body part, and projecting from the front frame body part to the lower surface side of the rafter in a state where the front frame is installed on the rafter, and the rafter from below A fixing portion that is fixed to the rafter, and at least a temporary setting engagement portion for temporarily setting the front frame by engaging the front end of the rafter, wherein the temporary setting engagement portion is the rafter. A first locking receiving portion provided on the front frame, and the front frame is temporarily installed at a tip of the rafter and hooked on the first locking receiving portion to be locked, A first locking portion that is held in a temporarily installed state, and the first locking portion is folded downward from the protruding portion. The first locking receiving portion is formed at the tip of the rafter so as to protrude forward and bend upward, and with the front frame temporarily installed on the rafter, The main body portion is configured to be able to contact the leading end side of the rafter, and includes a main installation engaging portion that can fix the front frame to the rafter and engage the front frame with the leading end of the rafter, The main frame engaging portion is provided on the rafter and a second locking receiving portion provided on the rafter, and the front frame rolls in a state where the front frame is permanently installed on a front end of the rafter. And a second locking portion that is locked to the second locking receiving portion so as to regulate the second locking portion, and the second locking portion is formed by bending upward from the tip of the protruding portion. The second locking receiving portion is formed on the upper surface side of the tip of the rafter so as to protrude forward .

  In the front frame and rafter attachment structure of the present invention, the front frame can be temporarily installed by engaging the front end of the rafter with the temporary installation engaging portion. Then, the temporarily installed front frame is fixed to the rafter by screwing or the like, and the front frame can be moved from the temporary installation position to the main installation position and the main installation engaging portion can be engaged. It becomes possible to hold the front frame firmly and stably in the engaging portion for installation together with a screw for fixing to the rafter.

  Therefore, according to the mounting structure of the front frame and rafters of the present invention, it is possible to eliminate the need for fixing brackets and reduce screws, compared to the mounting structure using conventional fixing brackets, and by the number of parts and parts mounting. Construction man-hours can be reduced. Thereby, it becomes possible to improve the workability and economical efficiency of an external building such as an open terrace provided with a front frame and rafter attachment structure.

It is a perspective view which shows the building external structure provided with the attachment structure of the front frame and rafter which concern on one Embodiment of this invention. It is a perspective view which shows the condition which installs a front frame in the rafter of the building external structure provided with the attachment structure of the front frame and rafter concerning one Embodiment of this invention. It is a figure which shows the attachment structure of the front frame which concerns on one Embodiment of this invention, and a rafter, and is a figure which shows the state which lifted the front frame and distribute | arranged to the horizontal direction. It is a figure which shows the attachment structure of the front frame and rafter which concern on one Embodiment of this invention, and is a figure which shows the state which temporarily installed the front frame in the rafter. It is a figure which shows the attachment structure of the front frame and rafter which concern on one Embodiment of this invention, and is a figure which shows the state which carried out the main installation of the front frame to the rafter. It is a figure which shows the modification of a building external structure provided with the attachment structure of the front frame and rafter which concern on one Embodiment of this invention. It is a figure which shows the example of a change of the attachment structure of the front frame which concerns on one Embodiment of this invention, and a rafter, and is a figure which shows the state which raised the front frame and distribute | arranged to the horizontal direction. It is a figure which shows the example of a change of the attachment structure of the front frame and rafter which concerns on one Embodiment of this invention, and is a figure which shows the state which temporarily installed the front frame in the rafter. It is a figure which shows the example of a change of the attachment structure of the front frame and rafter which concerns on one Embodiment of this invention, and is a figure which shows the state which carried out the main installation of the front frame to the rafter. It is a figure which shows the example of a change of the attachment structure of the front frame and rafter which concern on one Embodiment of this invention. It is a figure which shows the conventional attachment method of a front frame and a rafter, and the attachment method of a front frame and a rafter.

  Hereinafter, a front frame and rafter attachment structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. Here, the present embodiment relates to a structure for attaching a front frame to the tip of a rafter constituting a roof portion of an external building such as an open terrace.

  First, the building exterior structure B of this embodiment is, for example, an open terrace or a carport, and as shown in FIG. 1, a predetermined interval is provided between the exterior wall T1 of a building body T such as a house or a store. And a plurality of columns 1 standing upright in the lateral direction S2 along the outer wall T1, and a girder (free girder) 2 connected to the upper ends of the plurality of columns 1; These columns 1 and a roof portion 3 supported by the girders 2 are provided.

  The roof part 3 has a rafter 4 installed horizontally on the outer wall T1 of the building body T, a rear end connected to the rafter 4 and supported by the girder 2 so as to protrude forward from the outer wall T1. A plurality of rafters 5 arranged in parallel in the transverse direction S2 along T1 and a roof panel (roof member) 6 that is supported by the rafters 5 and forms a roof surface is provided.

  Moreover, the building exterior structure B of this embodiment is formed by each rafter 5 having its tip end curved downward. Thereby, the roof part 3 is inclined in a circular arc shape gradually inclined downward toward the front end from the flat inclined part 3a toward the front end, and the flat inclined part 3a gradually inclined downward toward the front end side from the rear end. And a curved portion 3b.

  Further, as shown in FIGS. 1 and 2, the roof portion 3 is connected to the tips of the plurality of rafters 5 and extends in the lateral direction S <b> 2, for example, forming the tip portion of the roof portion 3 to ensure the design. Or a front frame 15 that functions as a rain gutter or the like.

  And this front frame 15 is connected and installed at the front-end | tip of several rafters 5 with the front frame and rafter attachment structure C of this embodiment.

  In addition, the front frame and rafter attachment structure C of the present embodiment are engaged with each other when the front frame 15 is temporarily installed at the tip of the rafter 5, as shown in FIGS. When installing temporarily at the tip of the rafter 5 while disposing the temporarily installing engaging portion 18 including the first locking portion 16 and the first locking receiving portion 17 supported by the rafter 5 and the front frame 15 at a predetermined position. In addition, a second locking portion 19 that engages with each other to support the front frame 15 on the rafter 5 and a main installation engaging portion 21 that includes a second locking receiving portion 20 are provided.

  Specifically, the front frame 15 of the present embodiment is formed in a downwardly convex cross-sectional arc shape and extends in the lateral direction S2, and the front frame main body portion 15a functioning as a recumbent frame and the front frame installed Projecting from the front frame main body portion 15a to the lower surface side of the rafter 5, and fixed from the lower frame 5 with a screw 11 and fixed to the rafter 5, and projecting from the front frame main body portion 15a to hold the tip of the roof panel 6. And a holding portion 15d.

  Further, the front frame 15 is temporarily installed so as to protrude rearward and bend downward between the front-rear direction S1 between the front end of the fixing portion 15b in the protruding direction and the rear side of the front frame main body 15a. There are provided a first locking portion 16 of the engagement portion 18 and a second locking portion 19 of the main installation engagement portion 21 that protrudes rearward and is bent upward. In the present embodiment, the first locking portion 16 and the second locking portion 19 are integrally formed by extending downward and upward at the tip of one protruding piece 15c protruding rearward from the front frame main body portion 15a. ing.

  On the other hand, the rafter 5 has a first locking receiving portion 17 of a temporary installation engaging portion 18 that is formed on the lower surface side of the distal end side so as to protrude forward and extend upward along the extending direction of the rafter 5. The second locking receiving portion 20 of the main installation engaging portion 21 that protrudes forward and bends downward is provided on the upper surface side of the distal end side. Accordingly, the upper engagement groove (upper engagement recess) 23 is provided between the distal end and the first engagement receiving portion 17 and the lower engagement is provided between the distal end and the second engagement reception portion 20 on the distal end side of the rafter 5. Joint grooves (lower engagement recesses) 22 are respectively formed.

  And when attaching the elongate front frame 15 to the several rafters 5 by the front frame and rafter attachment structure C of this embodiment which consists of the said structure, as shown to FIG. 3, FIG. The first locking portion 16 of the front frame 15 is inserted into the lower engagement groove 22 of each rafter 5 from above, and the first locking portion 16 of the front frame 15 and the first locking receiver of each rafter 5 are received. The parts 17 are sequentially engaged.

  When the first locking portion 16 and the first locking receiving portion 17 are engaged in this way, the first locking portion 16 on the front frame 15 side is locked by the first locking receiving portion 17 on the rafter 5 side. The At this time, when the operator releases the front frame 15, the front frame 15 (the front frame main body portion 15 a and / or the fixing portion 15 b) comes into contact with the tip side of each rafter 5.

  Thus, the front frame 15 can be simply engaged with the first locking portion 17 of the temporary installation engaging portion 18 of each rafter 5 by engaging the first locking portion 16 of the temporary installation engaging portion 18 of the front frame 15 with the front frame. 15 is supported in a state where it is caught on the tip side of each rafter 5, and the front frame 15 is easily temporarily installed.

Next, as shown in FIG. 5, the fixing portion 15 b of the front frame 15 is fixed to the lower surface on the distal end side of the rafter 5 with screws 11 from below. For example, the front frame 15 is lifted upward, and the predetermined position of the front frame 15 is set with respect to the rafter 5 so that the fixing portion 15b of the front frame 15 and the screw hole penetratingly formed on the lower surface of the front end side of the rafter 5 communicate with each other. At the same time, a screw 11 is driven into the communicating screw hole from below to fix the fixing portion 15b of the front frame 15 to the tip side of the rafter 5.
It should be noted that the screw hole is not necessarily provided at the fixing portion 15b of the front frame 15 and the leading end side of the rafter 5. The front frame 15 is lifted upward, and the front frame 15 is placed at a predetermined main installation position with respect to the rafter 5. The fixing portion 15b of the front frame 15 may be fixed to the front end side of the rafter 5 by driving the screw 11 from below.

  In the front frame and rafter attachment structure C of the present embodiment, the front frame 15 is lifted, the fixing portion 15b is fixed to the rafter 5, and the first engaging portion of the temporarily installing engagement portion 18 of the front frame 15 is secured. 16 is disengaged from the first engagement receiving portion 17 (lower engagement groove 22) of the temporary installation engagement portion 18 of the rafter 5, and the second engagement portion 19 of the main installation engagement portion 21 of the front frame 15 is It fits into the upper engaging groove 23 and automatically engages with the second locking receiving portion 20 of the main installation engaging portion 21 of the rafter 5.

  In this way, the second locking portion 19 of the main installation engaging portion 21 is fixed to the rafter 5 by simply screwing the fixing portion 15b of the front frame 15 and fixing it to the rafter 5. The second locking portion 19 is locked to the second locking receiving portion 20 by engaging with the receiving portion 20. Thereby, it is prevented that the front frame 15 rolls forward with respect to the rafter 5, and the front frame 15 is connected and installed in the rafter 5 in a strongly stable state.

  Accordingly, in the front frame and rafter attachment structure C of the present embodiment, the front frame 15 can be temporarily installed by engaging the front frame 15 with the tip of the rafter 5 by the temporary installation engaging portion 18. Then, the temporarily installed front frame 15 is screwed and fixed to the rafter 5, the front frame 15 can be moved from the temporary installation position to the main installation position, and the main installation engaging portion 21 can be engaged. The installed front frame 15 can be firmly and stably held by the screw 11 for fixing to the rafter 5 and the main installation engagement portion 21.

  Further, in the front frame and rafter attachment structure C of the present embodiment, the front frame 15 is attached to the rafter 5 simply by hooking the first locking portion 16 on the first locking receiving portion 17 of the temporarily installing engaging portion 18. The front frame 15 can be temporarily installed on the rafter 5 even when the long front frame 15 is installed by one worker.

  Then, the temporarily installed front frame 15 can be screwed and fixed to each rafter 5 and the second locking portion 19 can be engaged with the second locking receiving portion 20 of the main installation engaging portion 21. . Thus, the front frame 15 can be firmly connected to the rafter 5 while being positioned at a predetermined installation position, so that even one operator can easily and reliably attach the front frame 15 to the rafter 5. This can be installed.

  Therefore, according to the front frame and rafter attachment structure C of the present embodiment, the temporary installation engaging portion 18 and the main installation engaging portion 21 are formed in the front frame 15 and the rafter 5 in advance and fixed as in the conventional case. The front frame 15 can be temporarily installed at the tip of the rafter 5 and can be permanently installed without using the metal fitting 10. This eliminates the need for the fixture 10, and reduces the number of screws 11, 12, and 13 and reduces the number of parts and the number of man-hours required for attaching parts. It becomes possible to improve the workability and economical efficiency of the external structure B.

  As mentioned above, although one Embodiment of the attachment structure of the front frame and rafter concerning this invention was described, this invention is not limited to said one Embodiment, It can change suitably in the range which does not deviate from the meaning. .

  For example, in the present embodiment, the roof portion 3 including the front frame and the rafter attachment structure C is formed by curving the tip portion side, but a flat roof portion 3 as shown in FIG. Of course, the front frame and rafter attachment structure C of the present invention may be applied.

  Further, in the present embodiment, the roof portion 3 is configured to include the rafters 5 installed on the outer wall T1 of the building body T. However, the roof including the front frame and the rafter attachment structure C according to the present invention. The part 3 does not necessarily have to be configured with the rafters 5.

  In the present embodiment, the building exterior structure B including the front frame and the rafter attachment structure C is described as an open terrace. However, the present invention naturally includes a garden room such as a sunroom, a terrace, and a balcony. It can also be applied to other types of building exterior structures such as car-ports, bicycle storage, storage, and passageways.

  Further, in the present embodiment, the rafter 5 is provided with the first locking receiving portion 17 and the second locking receiving portion 20, and the upper side into which the first locking portion 16 and the second locking portion 19 of the front frame 15 are fitted. Although the engagement groove 23 and the lower engagement groove 22 are formed, the engagement receiving portion is provided in the front frame 15 to form the upper and lower engagement grooves, and the engagement provided in the rafter 5 The front frame 15 may be connected to the rafter 5 by fitting the portion into these engagement grooves.

  In this case, the front frame 15 is engaged with the first engagement receiving portion of the front frame 15 by fitting the first engagement portion of the rafter 5 into the upper engagement groove of the front frame 15 and engaging the first engagement receiving portion of the front frame 15. It can be temporarily installed by hooking it to the tip. Further, when the fixing portion 15 b is screwed to the rafter 5 while lifting the front frame 15, the second locking portion of the rafter 5 fits into the lower engaging groove of the front frame 15, and the second locking receiving portion of the front frame 15 The second latching portion of the rafter 5 can be engaged with. Thereby, the effect similar to this embodiment can be acquired.

Further, in the present embodiment, the fixing portion 15b is fixed while lifting the front frame 15, and the first locking portion 16 of the temporarily installing engagement portion 18 is disengaged from the lower engagement groove 22 to engage the main installation engagement. The description has been made assuming that the second locking portion 19 is engaged with the second locking receiving portion 20 of the portion 21.
On the other hand, the fixing portion 15b of the front frame 15 is fixed to the rafter 5, and the temporary locking member is engaged with the second locking portion 19 engaged with the second locking receiving portion 20 of the main mounting engaging portion 21. The first locking portion 16 of the joint portion 18 does not come off from the lower engagement groove 22 and remains in a state where the first locking portion 16 is engaged with the first locking receiving portion 17 of the temporarily installing engaging portion 18. You may comprise as follows (refer FIG. 9).

  In this case, with the front frame 15 disposed at a predetermined main installation position and attached to the rafter 5, the front frame 15 is moved forward not only in the main installation engagement portion 21 but also in the temporary installation engagement portion 18. Can be prevented from rolling. For this reason, it becomes possible to connect and install the front frame 15 to the rafter 5 in a more stable and stable state.

Further, for example, as shown in FIG. 7, after the front frame 15 is temporarily installed by engaging the first locking portion 16 of the temporarily installing engaging portion 18 with the first locking receiving portion 17, FIG. 8 shows. The second locking receiving portion 20 of the main installation engaging portion 21 that is a member formed in this manner is attached to the rafter 5 with a screw 24 or the like, and the second locking receiving portion 20 You may comprise so that the part 19 may be latched.
In this case, it is necessary to attach the second locking receiving portion 20 of the main installation engaging portion 21 to the rafter with the screw 24 as in the conventional fixing bracket 10, but the second locking portion 19 is locked. Since the front frame 15 is supported by the rafter 5, the fixing portion 15 b of the front frame 15 is fixed to the rafter 5 with screws 11 and the front frame 7 is fixed to the fixing bracket 10 with screws 12. In comparison, the number of screws 11 and 24 can be reduced as in the present embodiment.

  Further, the front frame and rafter attachment structure C according to the present invention can be applied in the same manner as in the present embodiment even when the front frame 15 is configured integrally with a girder as shown in FIG. Even in this case, it is possible to obtain the same effect as the present embodiment.

Here, the mounting structure C of the front frame and the rafter according to the present invention is as follows. “As shown in FIG. 4, the temporarily installing engagement portion 18 that engages with the front frame 15 being temporarily installed at the tip of the rafter 5. The front frame position in front of the fulcrum P1 such as the fulcrum P1, the action position of the front frame 15 due to its own weight (center of gravity, etc.) and the external force action position when rain enters the front frame main body 15a is the force point P2. A contact point where the front frame 15 and the rafter 5 abut at a position different from the joint portion 18 is an action point P3, and the rafter 5 is attached to the rafter 5 in a state where the front frame 15 is installed at the tip of the rafter 5 as shown in FIG. The position where the fixing portion 15b of the front frame 15 is fixed is the fulcrum P1, the front frame position ahead of the fulcrum P1 such as the position where the front frame 15 acts by its own weight and the position where the external force acts when rain enters the front frame main body 15a. Is configured so that the force point P2 and the main installation engaging portion 21 are at the action point P3 ". Kill.
In other words, the mounting structure C of the front frame and the rafter according to the present invention includes “the engaging portions 18 and 21 for engaging the front frame 15 with the tip of the rafter 5, and the engaging portions 18 and 21 are arranged at the front. “The frame 15 is temporarily installed at the tip of the rafter 5 and becomes a fulcrum P1, and the front frame 15 is screwed (fixed) to the tip of the rafter 5 and is actually installed and at the point of action P3.” It can also be expressed.

1 strut 2 digit (free digit)
DESCRIPTION OF SYMBOLS 3 Roof part 3a Flat inclined part 3b Curved part 4 Rafter hook 5 Rafter 5a Tsum rafter 5b Tsum rafter 6 Roof panel 7 Conventional front frame 8 Temporary installation locking part 9 Main installation locking part 10 Fixing metal 11 Screw 12 Screw 13 Screw 15 Front frame 15a Front frame main body portion 15b Fixing portion 15c Projection piece 15d Holding portion 16 First locking portion 17 First locking receiving portion 18 Temporary setting engaging portion (engaging portion)
19 2nd latching | locking part 20 2nd latching receiving part 21 Engagement part (engagement part) for this installation
22 Lower engagement groove (lower engagement recess)
23 Upper engagement groove (upper engagement recess)
24 Screw A External building structure B with conventional front frame and rafter mounting structure B External building structure C Front frame and rafter mounting structure P1 Support point P2 Force point P3 Action point S1 Longitudinal direction S2 Horizontal direction T Building body T1 Outer wall

Claims (1)

A structure for installing a front frame at the tips of a plurality of rafters arranged side by side at a predetermined interval,
The front frame includes a front frame main body portion functioning as a reed, a projecting portion projecting rearward from the front frame main body portion, and the rafter from the front frame main body portion in a state where the front frame is installed on the rafter. And a fixing portion that is fixed to the rafter from below,
An engagement portion for temporary installation for temporarily installing the front frame by engaging the tip of the rafter;
The engaging portion for temporary installation is provided on the front frame and a first locking receiving portion provided on the rafter, and the front locking frame is temporarily installed on a tip of the rafter and the first locking receiving portion. A first locking portion that is hooked and locked, and holds the front frame in a temporarily installed state,
The first locking portion is formed by bending downward from the protruding portion,
The first locking receiving portion is formed at the tip of the rafter, protruding forward and bent upward,
In a state where the front frame is temporarily installed on the rafter, the front frame main body is configured to be able to contact the leading end side of the rafter ,
The front frame is fixed to the rafter, and the front frame is provided with a main installation engaging portion capable of engaging the front end of the rafter
The main frame engaging portion is provided on the rafter and a second locking receiving portion provided on the rafter, and the front frame rolls in a state where the front frame is permanently installed on a front end of the rafter. A second locking portion locked to the second locking receiving portion so as to regulate
The second locking portion is formed by bending upward from the tip of the protruding portion,
The mounting structure of the front frame and the rafters, wherein the second locking receiving part is formed on the upper surface side of the tip of the rafters so as to protrude forward .

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