JPH03129047A - System atized rafter member in roof structure - Google Patents

Abstract

PURPOSE:To improve workability by forming each surface plate receiving supporting part by forming the body of a rafter member into an upward U-shape and bending the right and left upper edge part at each step difference surface corresponding in the laying pitch intervals. CONSTITUTION:A rafter member 11 has a bottom wall part 12 and the right and left side wall parts 13 and 14 erected on both sides and is formed into an upward groove section having a nearly U-shape. Then, the right and left step difference surfaces 15 and 16 having the eaves side step difference (h) corresponding to the engagement stage difference between the roof plates are formed on the upper parts of the step difference parts 13 and 14. Then, the right and left surface plate receiving supporting parts 17 and 18 are oppositely bent inside so that the right and left step difference surfaces 15 and 16 are left in stepped form or saw tooth form, and a trough space 19 is formed inside the groove. Accordingly, a roof can be laid with the superior workability.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a systemized rafter member that is mainly applied to a roof structure of a building structure, particularly a horizontal roof structure, and more particularly, it relates to a systemized rafter member that is mainly applied to a horizontal roof structure. This invention relates to an improvement of a systemized rafter member in a roof structure that can support horizontal roofing boards of any type without intervening upboards or the like.

(Prior art) In general, roof structures that are applied to normal-sized building structures and use metal materials as the main constituent materials have traditionally been roughly divided into vertical roof structures and horizontal roof structures. There is a roof structure.

In normal cases, each of these types has a structure that is placed on the main roof material that is placed parallel to the ridge direction (hereinafter also referred to as the lateral direction) of the roof frame that makes up the roof structure to give a predetermined roof slope. perpendicular to the ridge direction (hereinafter also referred to as the vertical direction)
In the former vertical roof structure, a plurality of rafter members with a single roofing support plane are fixedly arranged in parallel at predetermined intervals, and with appropriate roofing boards etc. A vertical roofing plate having side edge engaging parts on both sides in the vertical direction and a face plate part in the center is used, and a plurality of vertical roofing plates are arranged in parallel in the horizontal direction between each adjacent rafter member. Directly under the condition.

Alternatively, the roof can be constructed by sequentially raising the roof in the vertical direction by interposing an appropriate engagement member or the like to engage and fasten the roof. Using a horizontal roof plate that has an eave side engaging part and a line side engaging part that can be engaged with each other, and a face plate part in the center, so as to span between each rafter member with a single roofing support plane. In the supported state, a plurality of horizontal roofing boards are engaged with each other in a stepwise manner in the vertical direction in a step-like or sawtooth-like manner, and a suspender member is used as appropriate on the inside. It is constructed by sequentially raising the roof in the horizontal direction by fastening and fixing it.

[Problems to be Solved by the Invention] However, each of the conventional vertical and horizontal roof structures constructed as described above has its own advantages and disadvantages when applied to numerical architectural structures. Each condition, such as the intended use of the target building structure and the surrounding environment,
It can also be arbitrarily selected and used based on requirements such as external appearance.

In this case, when comparing horizontally-roofed roofing plates used in a horizontally-roofed roof structure with vertically-roofed roofing plates in a vertically-roofed structure, structurally speaking, the amount of coverage per individual roofing plate on the roof surface is The area range is relatively narrow, and therefore its effective width dimension (i.e., corresponding to the roof width dimension on the roof surface and corresponds to the longitudinal length) is reduced, which makes it possible to The structural strength and effective wooden shelves provide good functionality and a good external design.

However, on the other hand, in the case of the horizontal roof structure with the above configuration, as described above, the effective width of the horizontal roof panels used is narrowed to accommodate the covered surface, so even if the configuration is different from that of the vertical roof structure, Even if the number of parts is the same, there is a disadvantage that the number of man-hours for roofing work per unit area is increased, and due to the structure, the eave side engaging part and the line side engaging part are Since they are engaged to form a dovetail configuration, a space is inevitably formed on the back side of the face plate part in the effective width range, and the corresponding face plate part is likely to be deflected by positive pressure applied from the outside. In order to prevent this, back up the back side of each level of roofing. Backup materials (wood wool cement board, urethane foam board, etc.) must be separately inserted into the roofing board as a base material, and S must be placed on each rafter member with a single roofing support plane. The roofing pitch interval is not necessarily regulated accurately, as the roofing pitch is not necessarily regulated accurately, as multiple horizontal roofing panels are supported and held in place by the hanger members. It requires a considerable degree of skill to set the
The number of man-hours required during installation, including the need for separate parts, increased, leading to an increase in costs.

This invention is an attempt to improve such conventional problems, and its purpose is to improve the horizontal roof structure when applying the horizontal roof structure to a building structure. By unitizing the rafters, which serve as the foundation material for roof shingles, it is not necessary to use back-up boards or the like, and it is possible to accurately and precisely control the roofing pitch between multiple horizontal roof shingles during construction. It is easy to set up, improves workability, reduces costs, and has excellent structural strength and external design. The object of the present invention is to provide a systemized rafter member for this type of roof structure.

[Means to solve the problem]

In order to achieve the above object, the systemized rafter member in the roof structure according to the present invention has a main body of the rafter member itself having an upwardly U-shaped cross section, and the left and right upper ends thereof are raised at pitch intervals. The corresponding left and right stepped surfaces are bent in a step-like or serrated shape, and the left and right face plate receiving portions are formed at these bent portions.

That is, the present invention provides a rafter member mainly applied to a horizontal roof structure, which has a bottom wall portion and left and right side wall portions, and is shaped like a channel with an upwardly U-shaped cross section. At each eave side corresponding to the roofing pitch interval at the upper end of the side wall section, each eave side step corresponding to the engagement step between the horizontally scored roof plates is applied to each step surface on the left and right in a stepped or sawtooth shape. This systemized rafter member for a roof structure is characterized in that each of the left and right face plate receiving portions are bent to face the inside or outside as required.

[For production]

That is, in the present invention, in a rafter member mainly applied to a horizontally ruled roof structure, the main body of the rafter member itself has an upwardly U-shaped cross section, and the left and right upper ends of the rafter member have a roofing pitch. The left and right stepped surfaces corresponding to the interval are bent in a step-like or sawtooth shape, and the left and right face plate receiving parts are formed at these bent parts.In this way, the systemized rafter member is constructed. By simply roofing the lower and upper horizontally ruled roof panels based on the stepped surface, each of these horizontally defined roof panels is supported by each side panel supporting section, and is reinforced and supported from the back side. Therefore, it is possible to effectively eliminate deflection caused by external pressure without necessarily using a back-up board, etc., and at the same time, when each horizontally ruled roof board is raised in this way, each horizontally ruled The roof shingles are accurately maintained at a predetermined roofing pitch every week, and can maintain the desired form without any skill required. At the left and right face plate receiving parts close to the left and right step surfaces, the hanger member that holds and locks the horizontally ruled roof plate can be fixed, and after roofing, the inside of the groove in the rafter body can be used as a rain gutter. It can be used effectively.

〔Example〕

Hereinafter, embodiments of the systemized rafter member in a roof structure according to the present invention will be described in detail with reference to FIGS. 1 to 4.

Fig. 1 is a perspective view and an overall conceptual diagram showing the general configuration of a systemized rafter member to which an embodiment of the present invention is applied, and Figs. 2 and 3 are outlines of a horizontally ruled roof structure using the same systemized rafter member as above. A vertical side view and a cross-sectional front view showing the configuration,
FIGS. 4 and 5 are perspective views showing the general structure of a horizontally ruled roof plate and a hanger member used in combination with the systemized rafter member as above, and FIG. 6 is a perspective view showing another embodiment of the same as above. FIG. 7 is a perspective view showing the general structure of the applied systemized rafter member, and FIGS. 7(a) to 7(d) are partial sectional views showing how the systemized rafter member is attached to the main building material.

That is, in these configurations of FIGS. 1 to 5,
The systemized rafter member (11) to which this embodiment is applied is formed into a predetermined shape by press forming or roll forming a relatively thick metal steel plate, forming using a combination of these, or press forming after extrusion forming as appropriate. In addition, the horizontally ruled roof structure that is raised using the rafter members (11) is formed in a predetermined direction parallel to the ridge direction of the roof frame that makes up the roof structure surface, that is, parallel to the lateral direction. On each main building material (A) arranged to give a roof slope of In addition to being fixed and arranged, horizontally ruled roof plates (31) made of similarly formed metal steel plates with ST4 are directly supported on each of these rafter members (11), and the lower level is From the eave side to the upper line side, the roof is raised at a predetermined roofing pitch interval W using each hanging member (51) made of a thick metal steel plate.

As shown in FIG. 1, the rafter member (11) has a bottom wall (12) and left and right side walls (13) and (14) raised on both sides. The cross section is shaped like an upward U-shaped groove, and each of these side walls (
13), on the upper part of (14), on each eave side corresponding part corresponding to the pitch interval W of each horizontally ruled roof board (31), between each horizontally ruled roof board (31). Due to the eaves side step corresponding to the engagement step, each of the left and right step surfaces (15)
, (+6) in a stepped or sawtooth shape, respectively, and attach the left and right face plate support parts (17), (Ig
) are bent inward to face each other, and inside the groove, a gutter space (19) is formed through which rainwater and the like flow down.

Further, as shown in FIG. 4, the horizontal roofing board member (31) has a predetermined length in the longitudinal and lateral directions parallel to the ridge direction in the roofed state. , and a central face plate portion (
32), and a line side engaging portion (33) on one side edge.
An eaves side engaging portion (34) is formed on the other side edge portion by molding respectively.

Here, the line side engaging portions (33) and the eave side engaging portions (34) on both sides in the transverse longitudinal direction of the horizontal roof board member (31) are connected.
Regarding roofing, each horizontal roof board member (3
1) may be configured so that when they are placed adjacent to each other, they can be engaged with each other by a predetermined engagement step. In this case, in particular,
Although the engagement configuration is not limited, as an example of a specific engagement configuration, the former line-side engagement portion (33) has an end portion folded back upwardly and inwardly for engagement. Part (3
5) and an upper retaining part (36) that bulges upward and inward from this end folded engaging part (35), and the latter eave side engaging part (34) is formed by a lower eave side engaging part (34). a leading edge drooping part (37) that is bent to accommodate the upper retaining part (36); It is formed by an end engaging edge (38) having an upwardly bulging portion (38a) on a portion thereof which can be inserted into and engaged with the portion (35). In addition, in FIGS. 2 and 4, the symbol (39) indicates the roof plate member (3
1) is the edge bent portion formed on the side surface.

Furthermore, as shown in FIG.
5), (16) near the base of the left and right side plate receiving parts (17), (18), and is attached with set screws (B) etc. to the base plate part (52) and the horizontal roof. It consists of a catch part (53) that catches and holds the upper catch part (36) of the line side engaging part (33) of the plate member (31).

In addition, the attachment of each rafter member (11) to each main building material (A) arranged with the predetermined roof slope is shown in FIGS. 7(a) to 7(d) as several examples of fixing methods. As shown, the left and right side walls (13) of the rafter member (11)
, (+4), holes (22) and (23) are formed respectively, and the means for mounting with the respective fixing metal fittings (71) and (7]) fixed on the main building material (A) (the same figure). (
a)) or each side wall part (13), (1
4) Attach to the bottom of the flange part (24), (25)
There is a means ((b) in the same figure) for attaching with each fixing metal fitting (72), (72) fixed on the main building material (A) by folding it back on each side.
) A protrusion (26) is provided in the center of the bottom wall (12) to protrude upwards, and installation is done through the protrusion (26) using screws or bolts (73). (C)), or a protrusion (27) whose lower surface is in the shape of an inverted dovetail is provided in the center of the bottom wall (12) so as to protrude upward. There is a means (d) in the same figure for mounting with a correspondingly shaped head using the inside of the inverted dovetail groove shaped recess (27) (see figure (d)). According to this method, as will be described later, it is possible to install the rafter member (11) without interfering with the flow of rainwater flowing down inside the groove and preventing water from leaking to the main building material (A) side.

Therefore, in the structure of each member according to the above embodiment, as shown in FIGS. 2 and 3, each individual rafter member (11) is located on each purlin member (A).

(11) are respectively arranged and fixed at a predetermined pitch interval p, and in this state, first, each rafter member (
11), each left and right face plate support part (+) on the lower side of (II)
7), (+8) to support the horizontal roof board member (31) on the lower tier side, and each step surface (15),
(16) Each side plate receiving part (+7) close to the base
, (18) Straddle the suspender member (51)
To install, fix the board part (52) with screws (B) and (B).
etc., and the upper retaining part (36) of the line side engaging part (33) of the lower side horizontal roof plate member (31) placed in the receiving position is secured to the engaging part (53). ) to hold and lock it.

Then, to the horizontal roofing board member (3I) on the lower tier side, the horizontal roofing board members (31) on the same level are connected to each other using a connecting sacrificial board (not shown) in the conventional manner. The connection is then made in sequence and in exactly the same way with a lock, but this connection for interconnection in the longitudinal and transverse direction is connected to the rafter members (
11) By doing this at the center in the longitudinal direction, even if there is water leakage from this connection, it will be leaked to the outside through the groove in the rafter member (11), that is, the gutter space (19). It can be leaked.

Next, the end engagement edge (38) of the eave side engagement part (34) of the upper horizontal ruled roof board member (31) is attached to the top of each of the rafter members (11) and (II). The line side engaging portion (
33) and engage it by inserting it into the end folding engagement part (35), and again, this upper horizontal ruled roof board member (31) is attached to each rafter member (II>, (11)). The suspender member (51) is supported through the left and right face plate support portions (17) and (18) on the upper stage side, and in exactly the same manner as above.
It is held and locked by this method.

In other words, in this way, the desired horizontally ruled roof structure can be raised, and in this roofing state, both the upper and lower horizontally ruled roof board members (31) The face plate part (32) is connected to each rafter member (11), (11
) are supported by the left and right face plate support portions (17) and (18), and are reinforced and supported from the back side, effectively eliminating deflection of the central face plate (32) due to external pressure. In addition, in this case, each horizontally ruled roof board (31
) can be accurately roofed at a predetermined pitch every week without requiring any skill.

In the above embodiment, both the left and right face plate receiving parts (17) and (18) of the rafter member (11) are bent inwardly, but as shown in FIG. Both of these may be bent outward, and similar actions and effects can be obtained.

What is shown in FIGS. 8 and 9 is a sectional view of a main part of a systemized rafter member according to the present invention fixed to a roof board or the like of another shape. Among these, the one shown in FIG. 8 is one in which the line side engaging portion (33) of the roof plate member (31) is folded back into a predetermined shape and overlapped, and the end portions are connected to the face plate receiving portions (+7) and (+8 ) with a contact surface (33a) that can be fixed with a fixing device such as a screw (B).

Furthermore, in the case shown in FIG. 9, the line-side engaging portion (33) of the roof plate member (31) is folded back into a predetermined shape and overlapped.
Further, its end portion extends toward the line side to form a contact surface (33a), and an upright portion (33b) is formed at its tip. Moreover, a hanger (5I) corresponding to the curved surface shape of the abutment surface (33a) and the upright portion (33b) is formed, and the face plate support is supported by the hanger (51) and fixing devices such as screws (B). (+7), (+8) fixed on top. This hanger (5
As shown in the figure, the shape of 1) is approximately hat-shaped, and the top part is formed to support the center plate part (32) of the roof plate member (31) from below.

Note that the same reference numerals are given to the same parts as those shown in the embodiment of FIG. 2, and the explanation thereof will be omitted.

〔Effect of the invention〕

As described in detail above, according to the present invention, in a rafter member mainly applied to a horizontally ruled roof structure, the main body of the rafter member itself has an upwardly U-shaped cross section, and The upper end is roofed and bent into a step-like or serrated shape at each step surface on the left and right corresponding to the pitch interval, and the left and right side plate receiving parts are formed at these bent parts.In this way, systemized rafters are created. Since the structure is made up of members, all you need to do is to raise the horizontally ruled roof panels on the lower and upper sides based on each stepped surface, and these horizontally ruled roof panels can be received in their respective face plate support sections. This can be sufficiently reinforced and supported from the back side, and in this way, the back side of each horizontally ruled roof board can be protected from bending due to external pressure, etc., without necessarily interposing a back-up board or the like. In addition, when each horizontally scored roof board is raised in this way, each horizontally scored roof board can be accurately maintained at the predetermined roofing pitch every week. The roofing can be done in the desired form without any skill required.On the other hand, when doing this, the horizontal creases are placed at the right and left side plate support points close to the left and right stepped surfaces. It is convenient to be able to fix the hanger member that holds and locks the roof board, and when the longitudinal and lateral connections of each horizontally ruled roof board in the same row are made at the longitudinal center of the rafter member. After roofing, the inside of the groove in the rafter body can be effectively used as a rain gutter, and it has excellent features such as being extremely simple in structure and can be provided easily and inexpensively. .

[Brief explanation of the drawing]

FIG. 1 is a perspective view and an overall conceptual diagram showing the general configuration of a systemized rafter member to which an embodiment of the present invention is applied, and FIGS. 2 and 3 are a schematic configuration of a horizontal roof structure using the same systemized rafter member. A vertical side view and a cross-sectional front view showing
Figures 4 and 5 are perspective views showing the general configuration of horizontal roof plates and hanger members used in combination with the systemized rafter members as described above, and Figure 6 shows other embodiments of the same as above. 7(a) to 7(d) are partial sectional views showing the state in which the systemized rafter member is attached to the purlin material; FIG. and FIG. 9 are partially cutaway sectional views showing the state in which different roof plate face plates and the like are used. (11)...Systemized rafter members, (12)...
・Bottom wall part, (13), (14)... Left and right side wall parts, (1
5), (16)...each step surface on the left and right, (17)
, (18)... Left and right side plate receiving parts, (19)...
... Gutter space, h ... Eave side step, p ... Arrangement pitch interval, A) ... Purlin material, 20, (21) ... Hanging section. 3I...Horizontal roof board member, 32...Central face plate part, (33)...Line side engagement part, 34...Eave side engagement part, 35...Edge Part folding engagement part, 36... Upper retaining part, 37... Front edge drooping part, (38)... End engagement edge, stomach... Effective width. (51)... Hanging member, (52)... Attaching to the base plate, (53)... Retaining and engaging part, (B)... Set screw.

Claims (2)

[Claims] (1) A rafter member mainly applied to a horizontal roof structure, which has a bottom wall portion and left and right side wall portions, and is shaped like a channel with an upwardly facing U-shape in cross section, and each side wall portion has a substantially U-shaped cross section. At the corresponding part of each eave side corresponding to the roofing pitch interval at the upper end of the roof, each step surface on the left and right is shaped like a step or a sawtooth, respectively, by a step on the eave side that corresponds to the engagement step between the horizontal roof sheets. A systemized rafter member for a roof structure, characterized in that each of the left and right side plate receiving portions are bent to face the inside or outside as required. (2) A claim characterized in that it is possible to attach a hanger member for holding and locking the horizontal roofing boards by extending between the left and right face plate receiving portions close to the left and right stepped surfaces. Systemized rafter member in the roof structure according to 1.